GOSIA - User contributions [en]

Gosia

2013-05-17T13:14:12Z

Gosia: /* Downloads */ Added link to the development branch (complete repo) of rachel.

Please contribute to this wiki! If you would like an account, please [[Special:UserLogin | request an account]] and then [mailto:abraunhayes@gmail.com send an email to an administrator]. (The number of requests by spam-bots necessitates an email for a quick response.)

Follow @GosiaCoulex on [http://twitter.com/#!/GosiaCoulex Twitter] for new version announcements and bug-fixes.

Gosia is the primary analysis code for planning experiments and analyzing data for nuclear structure physics using [[low-energy Coulomb excitation]] experiments. It is suited for both planning experiments and analysis of Coulomb excitation data. The original version was written at the University of Rochester in 1979--1980 by [[Tomasz Czosnyka]], [http://www.pas.rochester.edu/~cline/ D. Cline] and [http://www.turpion.org/links/ca4ad02e0d0fafd70a31c549cf4b3c4c_0.phtml C.Y. Wu]. T. Czosnyka maintained the code until his untimely death in 2006. [[What_is_Gosia | Learn more...]].

[[Rachel_GUI | Rachel ]] is the graphical user interface for Gosia. New Gosia users should start by installing the GUI.

==What Gosia can do for the experimenter==

===Experiment planning and simulation===

The GOSIA suite of codes are ideally suited to the design and planning of
heavy-ion induced Coulomb excitation experiments as well as the subsequent
analysis. Coulomb excitation experiments can seem deceptively simple,
especially for few-state problems, leading some experimenters to fall into
analysis traps or collecting data that have less than optimal sensitivity to
the goals of the experiment. The [[experiment_planning | Experiment planning]] page identifies potential pitfalls
in the design and analysis of Coulomb excitation experiments.

===Analysis of Coulomb excitation data===

The motivation for development of Gosia was to
implement the capability to extract measured
<math>E\lambda</math>
matrix elements model-independently from Coulomb excitation data. The first
major task required to achieve this goal was to design experiments covering a
wide dynamic range of Coulomb excitation strength that provide sufficient
experimental data to overdetermine the many unknown matrix elements.
Experimental techniques were developed to achieve this requirement in the
1980's and primarily involved Coulomb excitation measurements over a wide
range of both scattering angle and unexcited nucleus
<math>Z</math> value. The second major task was the development of Gosia to
model-independently extract the matrix elements via a least-squares search of
the data. During the 1980's and early 1990's the ready availability of beam
time at heavy-ion accelerator facilities, the availability of high-efficiency
<math>p-\gamma</math> detector facilities, and access to fast computer systems needed for the Gosia
least-squares searches, enabled the first model-independent extraction of
<math>E\lambda</math>
matrix elements from multiple Coulomb excitation data.

[[Model_independent_analysis | Model-independent analysis]]

[[Model_dependent_analysis | Model-dependent analysis]]

==Selected special topics==

Other topics can be found using the search box at the left.

[[common_mistakes | Common mistakes in Gosia calculations]]

[[Integrated_yields | Interpreting the "integrated yields" output]]

[[normalization_of_yield_data | Normalization of gamma-ray yield data]]

==Downloads==

Note that Gosia version numbers are coded as YYYYMMDD.N, where N is a minor update or bug-fix on the original YYYYMMDD version. For example, version 20110524.2 was released on 2011-11-07. ''Some recent releases have an incorrect message "LATEST REVISION- JUNE 2006" in the output file header.''

(Right-click to download source codes.)

* The current version (20120510) of the [http://www.pas.rochester.edu/~cline/Gosia/Gosia_Manual_20120510.pdf Gosia manual]
* The latest release (20110524.2) of [http://www.pas.rochester.edu/%7Ehayes/gosia_versions/gosia_20110524.2.f Gosia]
* The latest release (2_20081208.14) of [http://www.pas.rochester.edu/%7Ehayes/gosia_versions/gosia2_20081208.14.f Gosia2], for analysing simultaneous Coulomb excitation of target and projectile, using a common normalization.
* The current release version of Rachel, the Gosia interface, can be downloaded as a zip file [https://github.com/adamhayes/Rachel/archive/stable_versions.zip zip file.] You can also fork the [https://github.com/adamhayes/Rachel master development branch] and contribute. (Remember that the latter is a ''development branch.'')
* [http://www.pas.rochester.edu/%7Ecline/Research/GOSIAcodes/pawel-06-mod.f Pawel], the Gosia version to treat excitation of a nucleus in an isomer state
* [http://www.pas.rochester.edu/%7Ecline/Research/GOSIAcodes/gosia_arm.for ANNL (Anneal)], a special version of Gosia developed by Rich Ibbotson that uses simulated annealing techniques to locate minima
* [http://www.pas.rochester.edu/%7Ecline/Research/GOSIAcodes/sigma.f Sigma], the 2006 Fortran source code for deducing the quadrupole invariants from the E2 matrix elements determined by Gosia
* [http://www.pas.rochester.edu/%7Ecline/Research/GOSIAcodes/gremlin.f GREMLIN], the gamma-ray detector efficiency code developed for use with GOSIA in 1987 by Alexander Kavka

* The set of [http://www.pas.rochester.edu/~hayes/gosia_downloads/fit_demo_2011.tar demonstration files] to accompany the Gosia tutorial in chapter 14 of the Gosia Manual

==Installing Gosia==

Installation of Gosia requires only the following steps:

# Compiling gosia with a Fortran compiler
# Setting the default path or alias to find Gosia, if desired. (See also the path requirements for [[Gui|Rachel]] and the [[rachel setup file]].)

Most standard Fortran 77 compilers will produce a working Gosia executable. GNU
<tt>g77</tt> is recommended, but is becoming deprecated on newer machines. The newer,
more commonly used <tt>gfortran</tt> will also work. Intel Fortran should work, but is not recommended, because future error trapping patches may not work well with the Intel compiler. For more information about
compiling and standard builds, refer to the page [[compiling gosia | Compiling Gosia]].

== User support ==

===The graphical interface for Gosia===

A [[Gui | GUI (Graphical User Interface) called Rachel]] has been developed. The current version can be found in the download section above. Novice Gosia users can use this interface to develop properly formatted template Gosia input files. These can be modified by comparing the input lines to the Gosia manual instructions, or Gosia can be run entirely from within the GUI for many typical [[simulation (experiment planning)]] and analysis problems.

===Example Gosia input files===

Chapter 14 of the current [[Gosia Manual]] contains an annotated example input, a flowchart of the procedures that must be run during analysis of data and a tutorial based on a set of example files which can be obtained on the [[Gosia_tutorials]] page.

===The Gosia Forum===

The new gosia forum can be found [http://www-user.pas.rochester.edu/~gosia/phpBB3/index.php here.] As described on the [[Gosia_users'_forum]] page, the Forum is the appropriate place to post requests for help with specific Gosia calculations and for experienced users to give answers and advice.

==Maintenance of the Gosia codes==

The Gosia codes are maintained by the [[Gosia_Steering_Committee]].

==Purpose of the Gosia Wiki==

While the Wiki will eventually mirror much of the content of the [http://www.pas.rochester.edu/%7Ecline/Gosia/2011manual20110428.pdf Gosia Manual], the purpose is not to reproduce the manual in its entirety. The Gosia Manual should still be considered the primary reference for running Gosia. The advantage of the Wiki format is that an unlimited number of pages can be added here by interested users on special topics that are not appropriate for a users' manual. These may include

* Examples of Gosia input and output for common calculations, such as
** input file templates
** common detector definitions
** proper data set normalizations
** fitting strategies for systems with many matrix elements
* Solutions for difficult calculations, such as extreme inverse kinematics cases
* More detailed theory notes

* Examples of the use of [[Pawel]], [[ANNL]] and other codes in the Gosia suite

Wiki users are encouraged to contribute anything that should be of general interest to the Gosia user community and to move solved problems from the Forum if they may be of general interest.

==Help for the Wiki user==

Consult the page [[Wiki_formatting]] for basic formatting instructions to contribute to this Wiki.

==Links==

Some of the following pages will be absorbed into the pages on the new Wiki server.

* The [http://www.slcj.uw.edu.pl/en/0.html Warsaw Heavy Ion Laboratory] page and the
* [http://www.slcj.uw.edu.pl/gosia_workshop 2008 Gosia Workshop] at Warsaw
* The [http://www.ikp.uni-koeln.de/~warr/gosia/ Cologne Gosia page]
* and the [http://www.pas.rochester.edu/~cline/Gosia/index.html Rochester Gosia page]

==Notes==

<references/>

Rachel GUI

2013-05-17T13:07:21Z

Gosia: Changed installation to include forking the git repo.

==General description==

[[File:Guisnapshot.png|thumb|right|A snapshot of the alpha version GUI.]]

For a demo of Rachel's capabilities, watch [http://youtu.be/moVVC-GODzQ The Rachel Video on Youtube], or [http://www.pas.rochester.edu/~hayes/beta_rachel/main_ad.html Download the mp4 (9MB)].

The Rachel interface facilitates [http://www.pas.rochester.edu/~hayes/beta_rachel/calculation_in_2_minutes.html fast setup of Gosia calculations] and data analysis using push-button controls with guided input and 'plain language' warnings during setup. Rachel is written in Python 2.6 and is expected to be Python 2.7 compliant. It runs under Linux and Unix (OS X) machines. A Windows version is not planned.

A 64-bit processor is essential, because Gosia runs fastest and most accurately on 64-bit machines. Versions 1.* have many structural changes in the code, allowing more automation, more general particle detector options and fewer user prompts for standard operations.

[[File:Typicalgosiainput.png|thumb|right|Excerpt of a typical Gosia input for a collective system.]]While gosia.20081208 incorporates the [[OP,BRIC]] command to read internal conversion data from BrIcc data files, removing the burden of entering ICC interpolation data by the user, the GUI allows the greatest possible automation by prompts for pre-defined or user-defined germanium detector crystals or arrays, calculation of Zeigler stopping power data, optimum meshpoint selection for yield calculations, transformation of rectilinear detector definition to laboratory-frame spherical-polar interpolation coordinates, etc. For standard problems, the burden on the user is reduced to entering nuclear level and matrix data for simulations (including optional data-set simulation) and real experimental data for fitting of matrix elements. For collective systems, where the matrix definition often includes several hundred lines of matrix elements, rotor parameters can be given to reduce the setup time for the initial guesses of matrix element values. This also eliminates the need for the user to re-index the reduced matrix elements by hand as changes are made to the matrix or level scheme.

==How to get the Rachel package==

Get the latest release version from the [[Gosia#Downloads | Downloads section on the Main Page]].

==Version notes==

The [[Gui_release_notes | version notes page]] gives a history of Rachel updates. Known issues are given for each version, as well as the current version.

==Installation notes==

===General===

A script was added by Mitch Allmond that compiles and sets up Rachel, Gosia and Elast in one step. First, un-tar the distribution, or pull the git repo from the [[Gosia#Downloads | Downloads section on the Main Page]]. Please fork it and make pull requests if you have anything to contribute.

<pre>
% tar -xvf rachel_distribution_1.3.0.tar
</pre>

or similar for the correct version number. Move into the new Rachel directory and run compile-all.sh:

<pre>
% cd rachel_distribution_1.3.0
% ./compile-all.sh
</pre>

You will be prompted if any previous setup information needs to be overwritten.

Rachel has been installed successfully on a number of Linux and OS X systems. Most problems are related to the level scheme graphics. Refer to [http://matplotlib.sourceforge.net/faq/installing_faq.html#backends matplotlib backends] for remedies. You can view or submit detailed installation notes for any particular operating system. (Please link them to a separate Wiki page.)

If the default python environment set in the rachel.py executable is not appropriate, the following error will appear:

<pre>
% [path].rachel.py
/usr/bin/env: python2.6: No such file or directory
%
</pre>

The correct Python environment can be invoked by typing instead:

<pre>
% [python] [path].rachel.py
</pre>

where [python] is the Python executable with the correct path and [path] is the path to the rachel.py executable where the user installed it.

===Installation notes for other Linux/Unix systems===

* [[rachel_installation_ubuntu | Ubuntu]]
* [[rachel_installation_open_suse | OpenSuse]]
* [[rachel_installation_fedora | Fedora]]
* [[rachel_installation_mac_os_x | Mac OS X]]

The final tests that all necessary libraries and codes are installed are usually the following:

* Load a level scheme and see that the level scheme window is drawn properly. Rarely, after loading a level scheme with no errors (e.g. using one of the example files included in the Rachel distribution), the user must click "Examine fig. window" once to create the level scheme window. On most systems, with the correct libraries installed, the level scheme display pops up when a valid level scheme is loaded with no errors. If the GUI starts and can load and draw the level diagram without errors, then it is unlikely that there are any missing libraries. Also note that on some systems the matplotlib back-end must be changed. This is done by editing the <tt>~/.matplotlib/matplotlibrc</tt> file so that the back-end line reads

<pre>
backend : [backend]
</pre>

where <tt>[backend]</tt> may be one of several back-ends described here: [http://matplotlib.sourceforge.net/faq/installing_faq.html#backends matplotlib backends]. Usually <tt>TkAgg</tt> works except on Mac OS X. Refer to [[rachel_installation_mac_os_x | Mac OS X]].

* After running a calculation ("integration"), test the yield-plotting feature using the "Plot yields" button. If there is an error finding gnuplot, install gnuplot on the system so that it is in the user's path, i.e., that it can be invoked by typing "gnuplot" at the terminal prompt.

==GUI version backward compatibility==

In the beta versions, the GUI preserves backward-compatibility of the saved session files, so that users can upgrade the GUI without having to rebuild the session.

When changing to version 1.0 or later, users will have to rebuild their sessions, because of major changes in the internal structure that cannot be automatically upgraded. This can be aided by the export/import tools for the level and matrix data. Subsequent versions will have the automatic upgrading reinstated.

==Graphics Issues==

If you do not see a level scheme diagram after loading a level scheme or a saved session, click "Examine fig. window" once. The level scheme should then appear.

If it does not, or if the level scheme window buttons (zoom, pan, etc.) do not work, you may need to change the graphics back-end. The matplotlib graphics library used for the level scheme and particle detector layout comes with several choices of back-ends.

*On OS X machines, "macosx" may work best.
*On Ubuntu, GTKAgg works best, but the user must click "Examine fig. window" 'once' after loading a level scheme or saved session.

The back-end is in the matplotlibrc file in the .matplotlib directory, or will be, after you start Rachel for the first time.

<pre>
hayes@Sobchak:~$ cd .matplotlib/
hayes@Sobchak:~/.matplotlib$ ll
total 116K
drwxr-xr-x 3 hayes hayes 4.0K Nov 5 12:30 ./
drwxr-xr-x 125 hayes hayes 12K Nov 5 12:53 ../
-rw-r--r-- 1 hayes hayes 92K Oct 27 13:13 fontList.cache
-rw-r--r-- 1 hayes hayes 17 Aug 19 02:09 matplotlibrc
drwxrwxr-x 2 hayes hayes 4.0K Oct 27 13:13 tex.cache/
hayes@Sobchak:~/.matplotlib$ cat matplotlibrc
backend : GTKAgg
hayes@Sobchak:~/.matplotlib$
</pre>

Change the backend line as desired. The choices are found

==Capabilities of version 1==

Note that there are major simplifications in the Ge detector array setup and data loading.

* Human-readable data files that are robust for changes in the experimental setup and level scheme
* Azimuthally symmetric particle detection
* Partitioning particle-detector data by azimuthal angle
* Graphical definition of rectilinear or irregular-shaped particle detectors [[File:rectilineardetectorexample.png|thumb|right|A user-defined rectilinear detector automatically transformed into the laboratory spherical polar coordinates for Gosia. Black edge is the "exact" shape; red lines are the azimuthal range samples passed to Gosia.]]
* 4pi experiments (e.g. experiments with no particle detection)
* Normal or inverse kinematics experiments
* A user-expandable library of standard Ge crystals e.g. Gammasphere
* A user-expandable library of detector arrays (Tigress, Miniball, Gammasphere...)
* Data from summed 4pi arrays
* Efficiency-corrected gamma-ray data only
* Experiment planning aids
** Generation of simulated data based on a proposed beam run
** Optional quasi-Gaussian random scatter in simulated data
** Estimated precision of the proposed measurement
* Accuracy testing to determine if Gosia will be appropriate for a planned experiment
* Fitting and correlated error estimations
* Reading level schemes and gamma-ray data from Radware AGS files and [[Rachel_yield_data_files | Rachel text format]] including
** Branching ratio data
** Previously measured EM matrix elements, including the measured phases
** Lifetime data for ''excited states'' (not the ground state lifetime)
** Mixing ratios
* Several supported data file formats
** [Radware] AGS format
** [[Rachel format nuclear data files]]
** Gosia format (experimental yield and fitted matrix element data)
* Instantly generating plots of experimental vs. predicted yields via gnuplot [[File:plottingexample.png|thumb|right|A zoomed view of a plot of yield vs. spin in a rotational band generated from the Gosia output and experimental data.]]
* Automated generation of stopping power and internal conversion input for Gosia
* Push-button controls, optional pop-up guidance and guided prompts
* A searchable help function
* Undo/Redo of most functions and crash recovery

Using Rachel, the user will be able to build a level scheme from either a hand-written text file and/or a Radware AGS file, define the experimental setup and import relative-efficiency-corrected gamma-ray data from Rachel-format text and/or AGS files. The matrix and fit parameters can be defined by push-buttons and prompts or imported from a Rachel-format matrix file. Gosia will then be run by push-button GUI controls. Most prompts will be preceded by help information, suggestions, or warnings.

For experiments that fit the capabilities above, the user can view the Gosia inputs to learn the format, but will not be required to type any input code. Experienced Gosia users can export a GUI-generated input skeleton file and abandon the GUI to use the more advanced capabilities of Gosia.

==Upgrade strategy==

Upgrades are being made to incorporate all of the capabilities of Gosia, with a focus on the most commonly used features. Prioritization of the upgrades eventually will be directed primarily by [[software upgrade voting|votes]] cast by the user community. Users are encouraged to submit requested upgrades to handle present features of Gosia that are not already included, ''as well as new functions that Gosia does not handle, but which could be incorporated via the GUI.''

This voting plan has not been implemented yet. Users are encouraged to suggest desired upgrades through the Forum or the [[rachel_desired_upgrades | desired upgrades]] page to steer the software development.

===Planned upgrades===

There are a number of planned upgrades, many of which have already been added to versions 1.0 and later. The upgrade plan and priorities will be changed based on user feedback and bug reports.

# More accurate stopping power calculations for low-Z beams.
# Improved graphics including
## a transition from matplotlib graphics to pyGtk in the level scheme window
## clickable objects in the level scheme diagram
# Addition of Ge clusters with libraries of array geometries (Gammasphere, Agata, Miniball etc.)
# Plot functions to visualize fit conflicts in the data
# Improved object structure for Ge detectors. This will reduce the burden on the user by automatically updating the data set passed to Gosia as the level scheme and matrix change.
# Optional setting of symbolic matrix definitions, whereas now the matrix is stored numerically. This will allow greater user control by allowing tuning of model parameters, e.g. <gam|E2|gsb> = M1 + a*M2, where 'a' can be adjusted by the user.
# Optional simple distributed processing of some functions. This will allow the user to set a maximum number of independent processes to speed up separable calculations (integrated yields, corrected yields and experiment simulations) by issuing a separate call to Gosia for each process<ref>True distributed computing is not handled by the current version of Gosia</ref>.

==Videos, manual and run-time help==

===Quick advertising and demos===

[http://www.pas.rochester.edu/~hayes/beta_rachel/main_ad.html The Rachel advertising video]

[http://www.pas.rochester.edu/~hayes/beta_rachel/calculation_in_2_minutes.html Fast setup of Gosia calculations]

===Help with Rachel on this Wiki===

Use the search function to the left, or start here.

[[rachel_selected_topics | Selected help topics for Rachel]]

===Tutorial videos===

[[rachel_1.0_tutorial_videos | New Tutorial videos]] are being produced for version 1.0. These will be much shorter and more focused than the old videos.

You can still watch [[rachel_beta_tutorial_videos | beta-version tutorial videos]], but there have been many changes. General procedures are similar. These old videos contain more topics per video, so some are quite long.

===The manual===

The Rachel manual has been incorporated into the [[Gosia_Manual | Gosia manual]].

===Other help resources===

Run-time help is available using the Help button. Users are encouraged to submit suggestions for additional help data.

===Experiment planning and accuracy testing tools===

The simulation tools have been improved since the recording of these video tutorials. The user will find extra prompts for the details of the planned beam run, and estimated absolute measured counts will be calculated and displayed. The display format looks like the following:

<pre>
Experiment 1
Target excitation by Z,A = 54,136 at 517 MeV. Mean scattering angle = 45.0 deg.
Detector 1
Single crystal at theta, phi = 45.0, 45.0 deg. Solid angle = 0.06 sr.
This simulation does not include random gaussian scatter. Counts represent the cross sections calculated by Gosia.
Transition | Gammas incident | Fraction of | Observed Counts
| on Ge detectors | Gamma Incident |
Initial Final | | Energy **Detector Gammas |
Band Spin Band Spin | Counts *Error | (keV) Efficiency Detected | Rate(Hz) Counts ***Error
-------------------------------------------------------------------------------------------------------------------------
gsb 1.5 gsb 0.5 4.662e+06 2.332e+05 100.0 0.00049 0.09962 1.075e+00 4.644e+05 6.815e+02
gsb 2.5 gsb 0.5 1.570e+07 7.848e+05 200.0 0.00179 0.36853 1.339e+01 5.784e+06 2.405e+03
a 2.5 gsb 0.5 1.079e+04 5.647e+02 250.0 0.00189 0.38907 9.719e-03 4.199e+03 6.480e+01
a 2.5 gsb 1.5 9.816e+02 7.705e+01 150.0 0.00135 0.27823 6.322e-04 2.731e+02 1.653e+01
a 2.5 b 3.5 4.689e+05 2.376e+04 75.0 0.00015 0.0312 3.387e-02 1.463e+04 1.210e+02
</pre>

The "Observed Counts" are calculated using the efficiency curve from the detector library or a detector created by the user. The "Detector Efficiency" <math>\epsilon</math> is the usual definition. Possion counting errors are based on the observed counts, while additional error on the ''total'' efficiency-corrected counts may be added by the user.

Refer to the page [[Rachel_simulated_yield_output | Rachel simulated yield output]] for more information about simulations with the GUI.

===Troubleshooting===

For troubleshooting help, refer to the [[rachel_troubleshooting | troubleshooting]] page, or use the search box at the left.

==Bug reports==

Check the [[gui_release_notes | release notes]] page for a history of bugs and bug-fix versions.

Users are encouraged to submit bug reports via the [http://www-user.pas.rochester.edu/~gosia/phpBB3/ Gosia forum]. The operation that revealed the bug should be reported, and the session file saved before this operation should be included if possible.

==Links==

[http://www.pas.rochester.edu/~hayes/beta_rachel/main_ad.html The Rachel advertising video]

==Notes==

<references/>

Gosia

2013-04-18T15:27:31Z

Gosia: Added instructions for getting an account

Please contribute to this wiki! If you would like an account, please [[Special:UserLogin | request an account]] and then [mailto:abraunhayes@gmail.com send an email to an administrator]. (The number of requests by spam-bots necessitates an email for a quick response.)

Follow @GosiaCoulex on [http://twitter.com/#!/GosiaCoulex Twitter] for new version announcements and bug-fixes.

Gosia is the primary analysis code for planning experiments and analyzing data for nuclear structure physics using [[low-energy Coulomb excitation]] experiments. It is suited for both planning experiments and analysis of Coulomb excitation data. The original version was written at the University of Rochester in 1979--1980 by [[Tomasz Czosnyka]], [http://www.pas.rochester.edu/~cline/ D. Cline] and [http://www.turpion.org/links/ca4ad02e0d0fafd70a31c549cf4b3c4c_0.phtml C.Y. Wu]. T. Czosnyka maintained the code until his untimely death in 2006. [[What_is_Gosia | Learn more...]].

[[Rachel_GUI | Rachel ]] is the graphical user interface for Gosia. New Gosia users should start by installing the GUI.

==What Gosia can do for the experimenter==

===Experiment planning and simulation===

The GOSIA suite of codes are ideally suited to the design and planning of
heavy-ion induced Coulomb excitation experiments as well as the subsequent
analysis. Coulomb excitation experiments can seem deceptively simple,
especially for few-state problems, leading some experimenters to fall into
analysis traps or collecting data that have less than optimal sensitivity to
the goals of the experiment. The [[experiment_planning | Experiment planning]] page identifies potential pitfalls
in the design and analysis of Coulomb excitation experiments.

===Analysis of Coulomb excitation data===

The motivation for development of Gosia was to
implement the capability to extract measured
<math>E\lambda</math>
matrix elements model-independently from Coulomb excitation data. The first
major task required to achieve this goal was to design experiments covering a
wide dynamic range of Coulomb excitation strength that provide sufficient
experimental data to overdetermine the many unknown matrix elements.
Experimental techniques were developed to achieve this requirement in the
1980's and primarily involved Coulomb excitation measurements over a wide
range of both scattering angle and unexcited nucleus
<math>Z</math> value. The second major task was the development of Gosia to
model-independently extract the matrix elements via a least-squares search of
the data. During the 1980's and early 1990's the ready availability of beam
time at heavy-ion accelerator facilities, the availability of high-efficiency
<math>p-\gamma</math> detector facilities, and access to fast computer systems needed for the Gosia
least-squares searches, enabled the first model-independent extraction of
<math>E\lambda</math>
matrix elements from multiple Coulomb excitation data.

[[Model_independent_analysis | Model-independent analysis]]

[[Model_dependent_analysis | Model-dependent analysis]]

==Selected special topics==

Other topics can be found using the search box at the left.

[[common_mistakes | Common mistakes in Gosia calculations]]

[[Integrated_yields | Interpreting the "integrated yields" output]]

[[normalization_of_yield_data | Normalization of gamma-ray yield data]]

==Downloads==

Note that Gosia version numbers are coded as YYYYMMDD.N, where N is a minor update or bug-fix on the original YYYYMMDD version. For example, version 20110524.2 was released on 2011-11-07. ''Some recent releases have an incorrect message "LATEST REVISION- JUNE 2006" in the output file header.''

(Right-click to download source codes.)

* The current version (20120510) of the [http://www.pas.rochester.edu/~cline/Gosia/Gosia_Manual_20120510.pdf Gosia manual]
* The latest release (20110524.2) of [http://www.pas.rochester.edu/%7Ehayes/gosia_versions/gosia_20110524.2.f Gosia]
* The latest release (2_20081208.14) of [http://www.pas.rochester.edu/%7Ehayes/gosia_versions/gosia2_20081208.14.f Gosia2], for analysing simultaneous Coulomb excitation of target and projectile, using a common normalization.
* [https://github.com/adamhayes/Rachel/archive/stable_versions.zip The current release version of Rachel], the graphical interface for Gosia. See also the [[Gui_release_notes | Version notes]] page for new features.
* [http://www.pas.rochester.edu/%7Ecline/Research/GOSIAcodes/pawel-06-mod.f Pawel], the Gosia version to treat excitation of a nucleus in an isomer state
* [http://www.pas.rochester.edu/%7Ecline/Research/GOSIAcodes/gosia_arm.for ANNL (Anneal)], a special version of Gosia developed by Rich Ibbotson that uses simulated annealing techniques to locate minima
* [http://www.pas.rochester.edu/%7Ecline/Research/GOSIAcodes/sigma.f Sigma], the 2006 Fortran source code for deducing the quadrupole invariants from the E2 matrix elements determined by Gosia
* [http://www.pas.rochester.edu/%7Ecline/Research/GOSIAcodes/gremlin.f GREMLIN], the gamma-ray detector efficiency code developed for use with GOSIA in 1987 by Alexander Kavka

* The set of [http://www.pas.rochester.edu/~hayes/gosia_downloads/fit_demo_2011.tar demonstration files] to accompany the Gosia tutorial in chapter 14 of the Gosia Manual

==Installing Gosia==

Installation of Gosia requires only the following steps:

# Compiling gosia with a Fortran compiler
# Setting the default path or alias to find Gosia, if desired. (See also the path requirements for [[Gui|Rachel]] and the [[rachel setup file]].)

Most standard Fortran 77 compilers will produce a working Gosia executable. GNU
<tt>g77</tt> is recommended, but is becoming deprecated on newer machines. The newer,
more commonly used <tt>gfortran</tt> will also work. Intel Fortran should work, but is not recommended, because future error trapping patches may not work well with the Intel compiler. For more information about
compiling and standard builds, refer to the page [[compiling gosia | Compiling Gosia]].

== User support ==

===The graphical interface for Gosia===

A [[Gui | GUI (Graphical User Interface) called Rachel]] has been developed. The current version can be found in the download section above. Novice Gosia users can use this interface to develop properly formatted template Gosia input files. These can be modified by comparing the input lines to the Gosia manual instructions, or Gosia can be run entirely from within the GUI for many typical [[simulation (experiment planning)]] and analysis problems.

===Example Gosia input files===

Chapter 14 of the current [[Gosia Manual]] contains an annotated example input, a flowchart of the procedures that must be run during analysis of data and a tutorial based on a set of example files which can be obtained on the [[Gosia_tutorials]] page.

===The Gosia Forum===

The new gosia forum can be found [http://www-user.pas.rochester.edu/~gosia/phpBB3/index.php here.] As described on the [[Gosia_users'_forum]] page, the Forum is the appropriate place to post requests for help with specific Gosia calculations and for experienced users to give answers and advice.

==Maintenance of the Gosia codes==

The Gosia codes are maintained by the [[Gosia_Steering_Committee]].

==Purpose of the Gosia Wiki==

While the Wiki will eventually mirror much of the content of the [http://www.pas.rochester.edu/%7Ecline/Gosia/2011manual20110428.pdf Gosia Manual], the purpose is not to reproduce the manual in its entirety. The Gosia Manual should still be considered the primary reference for running Gosia. The advantage of the Wiki format is that an unlimited number of pages can be added here by interested users on special topics that are not appropriate for a users' manual. These may include

* Examples of Gosia input and output for common calculations, such as
** input file templates
** common detector definitions
** proper data set normalizations
** fitting strategies for systems with many matrix elements
* Solutions for difficult calculations, such as extreme inverse kinematics cases
* More detailed theory notes

* Examples of the use of [[Pawel]], [[ANNL]] and other codes in the Gosia suite

Wiki users are encouraged to contribute anything that should be of general interest to the Gosia user community and to move solved problems from the Forum if they may be of general interest.

==Help for the Wiki user==

Consult the page [[Wiki_formatting]] for basic formatting instructions to contribute to this Wiki.

==Links==

Some of the following pages will be absorbed into the pages on the new Wiki server.

* The [http://www.slcj.uw.edu.pl/en/0.html Warsaw Heavy Ion Laboratory] page and the
* [http://www.slcj.uw.edu.pl/gosia_workshop 2008 Gosia Workshop] at Warsaw
* The [http://www.ikp.uni-koeln.de/~warr/gosia/ Cologne Gosia page]
* and the [http://www.pas.rochester.edu/~cline/Gosia/index.html Rochester Gosia page]

==Notes==

<references/>

Gosia

2013-04-10T20:16:30Z

Gosia: /* Downloads */

Follow @GosiaCoulex on [http://twitter.com/#!/GosiaCoulex Twitter] for new version announcements and bug-fixes.

Gosia is the primary analysis code for planning experiments and analyzing data for nuclear structure physics using [[low-energy Coulomb excitation]] experiments. It is suited for both planning experiments and analysis of Coulomb excitation data. The original version was written at the University of Rochester in 1979--1980 by [[Tomasz Czosnyka]], [http://www.pas.rochester.edu/~cline/ D. Cline] and [http://www.turpion.org/links/ca4ad02e0d0fafd70a31c549cf4b3c4c_0.phtml C.Y. Wu]. T. Czosnyka maintained the code until his untimely death in 2006. [[What_is_Gosia | Learn more...]].

[[Rachel_GUI | Rachel ]] is the graphical user interface for Gosia. New Gosia users should start by installing the GUI.

==What Gosia can do for the experimenter==

===Experiment planning and simulation===

The GOSIA suite of codes are ideally suited to the design and planning of
heavy-ion induced Coulomb excitation experiments as well as the subsequent
analysis. Coulomb excitation experiments can seem deceptively simple,
especially for few-state problems, leading some experimenters to fall into
analysis traps or collecting data that have less than optimal sensitivity to
the goals of the experiment. The [[experiment_planning | Experiment planning]] page identifies potential pitfalls
in the design and analysis of Coulomb excitation experiments.

===Analysis of Coulomb excitation data===

The motivation for development of Gosia was to
implement the capability to extract measured
<math>E\lambda</math>
matrix elements model-independently from Coulomb excitation data. The first
major task required to achieve this goal was to design experiments covering a
wide dynamic range of Coulomb excitation strength that provide sufficient
experimental data to overdetermine the many unknown matrix elements.
Experimental techniques were developed to achieve this requirement in the
1980's and primarily involved Coulomb excitation measurements over a wide
range of both scattering angle and unexcited nucleus
<math>Z</math> value. The second major task was the development of Gosia to
model-independently extract the matrix elements via a least-squares search of
the data. During the 1980's and early 1990's the ready availability of beam
time at heavy-ion accelerator facilities, the availability of high-efficiency
<math>p-\gamma</math> detector facilities, and access to fast computer systems needed for the Gosia
least-squares searches, enabled the first model-independent extraction of
<math>E\lambda</math>
matrix elements from multiple Coulomb excitation data.

[[Model_independent_analysis | Model-independent analysis]]

[[Model_dependent_analysis | Model-dependent analysis]]

==Selected special topics==

Other topics can be found using the search box at the left.

[[common_mistakes | Common mistakes in Gosia calculations]]

[[Integrated_yields | Interpreting the "integrated yields" output]]

[[normalization_of_yield_data | Normalization of gamma-ray yield data]]

==Downloads==

Note that Gosia version numbers are coded as YYYYMMDD.N, where N is a minor update or bug-fix on the original YYYYMMDD version. For example, version 20110524.2 was released on 2011-11-07. ''Some recent releases have an incorrect message "LATEST REVISION- JUNE 2006" in the output file header.''

(Right-click to download source codes.)

* The current version (20120510) of the [http://www.pas.rochester.edu/~cline/Gosia/Gosia_Manual_20120510.pdf Gosia manual]
* The latest release (20110524.2) of [http://www.pas.rochester.edu/%7Ehayes/gosia_versions/gosia_20110524.2.f Gosia]
* The latest release (2_20081208.14) of [http://www.pas.rochester.edu/%7Ehayes/gosia_versions/gosia2_20081208.14.f Gosia2], for analysing simultaneous Coulomb excitation of target and projectile, using a common normalization.
* [https://github.com/adamhayes/Rachel/archive/stable_versions.zip The current release version of Rachel], the graphical interface for Gosia. See also the [[Gui_release_notes | Version notes]] page for new features.
* [http://www.pas.rochester.edu/%7Ecline/Research/GOSIAcodes/pawel-06-mod.f Pawel], the Gosia version to treat excitation of a nucleus in an isomer state
* [http://www.pas.rochester.edu/%7Ecline/Research/GOSIAcodes/gosia_arm.for ANNL (Anneal)], a special version of Gosia developed by Rich Ibbotson that uses simulated annealing techniques to locate minima
* [http://www.pas.rochester.edu/%7Ecline/Research/GOSIAcodes/sigma.f Sigma], the 2006 Fortran source code for deducing the quadrupole invariants from the E2 matrix elements determined by Gosia
* [http://www.pas.rochester.edu/%7Ecline/Research/GOSIAcodes/gremlin.f GREMLIN], the gamma-ray detector efficiency code developed for use with GOSIA in 1987 by Alexander Kavka

* The set of [http://www.pas.rochester.edu/~hayes/gosia_downloads/fit_demo_2011.tar demonstration files] to accompany the Gosia tutorial in chapter 14 of the Gosia Manual

==Installing Gosia==

Installation of Gosia requires only the following steps:

# Compiling gosia with a Fortran compiler
# Setting the default path or alias to find Gosia, if desired. (See also the path requirements for [[Gui|Rachel]] and the [[rachel setup file]].)

Most standard Fortran 77 compilers will produce a working Gosia executable. GNU
<tt>g77</tt> is recommended, but is becoming deprecated on newer machines. The newer,
more commonly used <tt>gfortran</tt> will also work. Intel Fortran should work, but is not recommended, because future error trapping patches may not work well with the Intel compiler. For more information about
compiling and standard builds, refer to the page [[compiling gosia | Compiling Gosia]].

== User support ==

===The graphical interface for Gosia===

A [[Gui | GUI (Graphical User Interface) called Rachel]] has been developed. The current version can be found in the download section above. Novice Gosia users can use this interface to develop properly formatted template Gosia input files. These can be modified by comparing the input lines to the Gosia manual instructions, or Gosia can be run entirely from within the GUI for many typical [[simulation (experiment planning)]] and analysis problems.

===Example Gosia input files===

Chapter 14 of the current [[Gosia Manual]] contains an annotated example input, a flowchart of the procedures that must be run during analysis of data and a tutorial based on a set of example files which can be obtained on the [[Gosia_tutorials]] page.

===The Gosia Forum===

The new gosia forum can be found [http://www-user.pas.rochester.edu/~gosia/phpBB3/index.php here.] As described on the [[Gosia_users'_forum]] page, the Forum is the appropriate place to post requests for help with specific Gosia calculations and for experienced users to give answers and advice.

==Maintenance of the Gosia codes==

The Gosia codes are maintained by the [[Gosia_Steering_Committee]].

==Purpose of the Gosia Wiki==

While the Wiki will eventually mirror much of the content of the [http://www.pas.rochester.edu/%7Ecline/Gosia/2011manual20110428.pdf Gosia Manual], the purpose is not to reproduce the manual in its entirety. The Gosia Manual should still be considered the primary reference for running Gosia. The advantage of the Wiki format is that an unlimited number of pages can be added here by interested users on special topics that are not appropriate for a users' manual. These may include

* Examples of Gosia input and output for common calculations, such as
** input file templates
** common detector definitions
** proper data set normalizations
** fitting strategies for systems with many matrix elements
* Solutions for difficult calculations, such as extreme inverse kinematics cases
* More detailed theory notes

* Examples of the use of [[Pawel]], [[ANNL]] and other codes in the Gosia suite

Wiki users are encouraged to contribute anything that should be of general interest to the Gosia user community and to move solved problems from the Forum if they may be of general interest.

==Help for the Wiki user==

Consult the page [[Wiki_formatting]] for basic formatting instructions to contribute to this Wiki.

==Links==

Some of the following pages will be absorbed into the pages on the new Wiki server.

* The [http://www.slcj.uw.edu.pl/en/0.html Warsaw Heavy Ion Laboratory] page and the
* [http://www.slcj.uw.edu.pl/gosia_workshop 2008 Gosia Workshop] at Warsaw
* The [http://www.ikp.uni-koeln.de/~warr/gosia/ Cologne Gosia page]
* and the [http://www.pas.rochester.edu/~cline/Gosia/index.html Rochester Gosia page]

==Notes==

<references/>

Gui release notes

2013-04-10T20:13:02Z

Gosia:

These versions are listed from newest to oldest.

=Versions 1.x=

==Version 1.3.3==

This is the most recent version, which can be found on the [https://github.com/adamhayes/Rachel/archive/stable_versions.zip stable-versions branch on github]

==Version 1.3.1==

===Description===

New features: Thick-target calculations are now fully-automated. The user is prompted if the thick target requires extra consideration, whereas, in older versions, the user would get error messages and have to fix it herself.

===Changes===

* Auto-complete has been added for filenames, so it is easier to load detector arrays, for example.
* Notices are displayed automatically when a new version of Rachel is available.
* The simulation table output contains all of the relevant data about each experiment.

====Bug-fixes====

Fixed a bug that prevented proper storage of calculated errors in the matrix elements. The output of the error calculation was correct, but those error bars could not be retrieved later.

This version properly flushes the input buffer (stdin) before prompts, so that accidental keystrokes are ignored.

===Known bugs and issues===

The plots of collision functions are still not available for all multipoles.

In all versions, it is possible to save an empty session over an existing session. Frequent backups of the working directory should be made.

This version is not backward-compatible with the beta versions; users must re-define the experimental
definitions. Level and matrix data CAN be exported from beta versions and imported to this version. All
later versions are expected to preserve backward compatibility with this version.
Plots of collision functions cannot be generated for all states.

===Recommendations===

==Version 1.3.0==

===Description===

New features: Thick-target calculations are now fully-automated. The user is prompted if the thick target requires extra consideration, whereas, in older versions, the user would get error messages and have to fix it herself.

===Changes===

* Thick target calculations are now fully-automated
* Lifetime calculations are now fully-automated (one-click)
* Vacuum deorientation calculations are now fully-automated and can be run at any time when the experimental setup is complete.
* Two logs have been added: a procedure log with timestamps and a user log that can be edited inside the GUI.
* Tab-completion of filenames and paths
* Improved reading of AGS level schemes that are missing spin/parity assignments
* The assumed Q-value is lowered automatically when the projectile energy is too low

====Bug-fixes====

Fixed a bug that used the wrong kinematic solution for inverse kinematics in some fits. This caused inaccuracy in finding the minimum in some cases.

Errors are more graceful if the user tries to perform an operation before setup is complete.

The splash screen now renders properly.

===Known bugs and issues===

In all versions, it is possible to save an empty session over an existing session. Frequent backups of the working directory should be made.

This version is not backward-compatible with the beta versions; users must re-define the experimental
definitions. Level and matrix data CAN be exported from beta versions and imported to this version. All
later versions are expected to preserve backward compatibility with version 1.2.0
Plots of collision functions cannot be generated for all states.

===Recommendations===

To migrate from a beta version to this version, export the level scheme and matrix, then import them into a
new session in this version.

==Version 1.2.0==

===Description===

===Changes===

The normalization of calculated yields to experimental yields in the GUI now matches the normalization used by Gosia. The previous Rachel versions weighted yields by their fractional errors when calculating the normalizations. This can make plotting and understanding the chi-squared values confusing. For example, when low-intensity gamma-ray yields are poorly reproduced, the high-intensity yields can appear to be poorly reproduced.

The new method in version 1.2.0 weights the individual yields' contributions to the normalization factor by their intensity only.

This version is backward-compatible with all versions 1.0 and later.

See version 1.0.

====Bug-fixes====

===Known bugs and issues===

In all versions, it is possible to save an empty session over an existing session. Frequent backups of the working directory should be made.

This version is not backward-compatible with the beta versions; users must re-define the experimental
definitions. Level and matrix data CAN be exported from beta versions and imported to this version. All
later versions are expected to preserve backward compatibility with this version.
Plots of collision functions cannot be generated for all states.

===Recommendations===

To migrate from a beta version to version 1.2.0, export the level scheme and matrix, then import them into a
new session in this version.

==Version 1.1.5==

===Description===

This version is backward-compatible with all versions 1.0 and later.

See version 1.0.

===Changes===

None

====Bug-fixes====

A bug that affected only the fitting and corrected yield calculations has been fixed. Occasionally, but not always, this bug resulted in incorrect yield data being passed to Gosia using the "Write Gosia yld file" button, which would affect fitting. It did not affect integrated yield calculations, simulations or plotting, and the integrated yield function still gave the correct chi-squared value.

See the recommendations section below.

===Known bugs and issues===

In all versions to date, the sensitivity map (OP,MAP) is calculated in the same Gosia call that does a fit (OP,MINI). This works in most cases, but it may cause errors occasionally in inverse-kinematics calculations. (This is not confirmed, but the error will be reported if it occurs.) The sensitivity map will be calculated in a separate call in the next bug-fix version.

Level schemes that do not have spins in order of increasing energy within a band, e.g. 1-, 0-, 3-, 2-..., will cause errors in generating the Gosia input, and the full yield data set may not be passed to Gosia for fitting matrix elements. The expected date for the bug fix is not known. In the meantime, separate each state to a separate band. (It may be sufficient to separate the ground state and put it in band #1, then put all remaining states in another band.) Be sure to check the K values that the GUI has assumed and normalization constants for the Alaga rule compared to the in-band rotor model.

In all versions, it is possible to save an empty session over an existing session. Frequent backups of the working directory should be made.

This version is not backward-compatible with the beta versions; users must re-define the experimental
definitions. Level and matrix data CAN be exported from beta versions and imported to this version. All
later versions are expected to preserve backward compatibility with this version.
Plots of collision functions cannot be generated for all states.

===Recommendations===

Refer to the bug-fix above. To correct possible errors in prior fits, do the following 'if a fit has been performed'.
No corrections are needed if a fit has not been performed with an earlier version.

# Rewrite the Gosia yield file using the button "Write Gosia yld file."
# Re-run the "Make corrected yields" calculation.
# Re-run the "Fit" calculation.
# Re-run any error calculations that have been done.
# Before comparing experimental yields to calculated yields (plotting, etc.), re-run "Integrated yields" to update the calculated yields for the new matrix elements.
# Save the session.

The new fitted matrix elements can be compared to previous calculations to see if the bug had affected fits.

To migrate from a beta version to this version, export the level scheme and matrix, then import them into a
new session in this version.

==Version 1.1.4==

===Description===

This version is backward-compatible with all versions 1.0 and later.

See version 1.0.

===Changes===

The user must now answer "y" or "n" when asked whether to save the session upon exiting. This helps to prevent accidentally overwriting the session file.

====Bug-fixes====

All yield data are properly displayed when plotting yields for merged bands.

Some previous versions did not parse comments properly in detector array files has been fixed. This bug had made it impossible to import a few of the array files that come with the Rachel package.

===Known bugs and issues===

In all versions, it is possible to save an empty session over an existing session. Frequent backups of the working directory should be made.

This version is not backward-compatible with the beta versions; users must re-define the experimental
definitions. Level and matrix data CAN be exported from beta versions and imported to this version. All
later versions are expected to preserve backward compatibility with version 1.1.4.
Plots of collision functions cannot be generated for all states.

===Recommendations===

To migrate from a beta version to version 1.1.4, export the level scheme and matrix, then import them into a
new session in this version.

==Version 1.1.3==

===Known bugs and issues===

''The following bug affects the plotting function, but does not affect the accuracy of calculations.''

In some cases, plots of gamma-ray yields will not show all of the data for merged bands. For example, if odd-spin states in band "b" are merged into the even spin states of band "a," a plot of the yield data for the merged band "a" may not show the yields from the states of the original band "b."

In all versions, it is possible to save an empty session over an existing session. Frequent backups of the working directory should be made.

This version is not backward-compatible with the beta versions; users must re-define the experimental
definitions. Level and matrix data CAN be exported from beta versions and imported to this version. All
later versions are expected to preserve backward compatibility with version 1.1.3.
Plots of collision functions cannot be generated for all states.

===Description===

See version 1.0.

====Bug-fixes====

It is now possible to add in-band matrix elements of any multipolarity that conserves parity, i.e., E2, E4, E6 and M1. There was no accuracy error associated with this bug.

===Recommendations===

To migrate from a beta version to version 1.1.3, export the level scheme and matrix, then import them into a
new session in this version.

==Version 1.1.2==

===Known bugs and issues===

In all versions, it is possible to save an empty session over an existing session. Frequent backups of the working directory should be made.

This version is not backward-compatible with the beta versions; users must re-define the experimental
definitions. Level and matrix data CAN be exported from beta versions and imported to this version. All
later versions are expected to preserve backward compatibility with version 1.1.2.
Plots of collision functions cannot be generated for all states.

===Description===

See version 1.0.

====Bug-fixes====

A bug that sometimes caused the deorientation coefficient calculation to fail has been fixed. Calculations were accurate in previous versions, but sometimes could not be read from the Gosia output.

===Recommendations===

To migrate from a beta version to version 1.1.2, export the level scheme and matrix, then import them into a
new session in this version.

==Version 1.1.1==

===Known bugs and issues===

In all versions, it is possible to save an empty session over an existing session. Frequent backups of the working directory should be made.

This version is not backward-compatible with the beta versions; users must re-define the experimental
definitions. Level and matrix data CAN be exported from beta versions and imported to this version. All
later versions are expected to preserve backward compatibility with version 1.1.
Plots of collision functions cannot be generated for all states.

===Description===

See version 1.0.

====Bug-fixes====

A bug that sometimes prevented correlated errors from being read from the Gosia output has been fixed.

===Recommendations===

To migrate from a beta version to version 1.1.1, export the level scheme and matrix, then import them into a
new session in this version.

==Version 1.1==

===Known bugs and issues===

In all versions, it is possible to save an empty session over an existing session. Frequent backups of the working directory should be made.

This version is not backward-compatible with the beta versions; users must re-define the experimental
definitions. Level and matrix data CAN be exported from beta versions and imported to this version. All
later versions are expected to preserve backward compatibility with version 1.1.
Plots of collision functions cannot be generated for all states.

The "fully-automatic" loading of yield data reports Ge detector numbers that are 1 larger than the correct number. This is misleading but does not cause any accuracy errors.

===Description===

See version 1.0

====Bug-fixes====

A bug in adding interband matrix elements is fixed. Version 1.0 did not include all allowed couplings.

===Recommendations===

To migrate from a beta version to version 1.1, export the level scheme and matrix, then import them into a
new session in this version.

==Version 1.0==

===Known bugs and issues===

In all versions, it is possible to save an empty session over an existing session. Frequent backups of the working directory should be made.

This version is not backward-compatible with the beta versions; users must re-define the experimental
definitions. Level and matrix data CAN be exported from beta versions and imported to this version. All
later versions are expected to preserve backward compatibility with version 1.0.
Plots of collision functions cannot be generated for all states.

The "fully-automatic" loading of yield data reports Ge detector numbers that are 1 larger than the correct number. This is misleading but does not cause any accuracy errors.

===Description===

Faster setup of calculations.

Defining complicated detector arrays can be done in one operation.

A library of detector types and arrays is included.

Loading of all experimental yield data can be done in one operation.

Simulations now use the standard definition of Ge efficiency.

Simulated yield tables are clearer.

Stopping power and exit energy are calculated by Elast automatically.

The Rochester SRIM server can be called for more accurate stopping power data.

Thick-target experiments are handled accurately, including backscatter detection from the surface.

The correction to the gamma angular distribution now includes the motion of the emitting nucleus.

Deorientation coefficients and lifetimes can be calulated in a few seconds.

====Bug-fixes====

Merging, deleting and reordering of bands are allowed at any time.

Any number of bands can be merged. (See restrictions regarding duplicate spin states and different-parity
states in one band.)

Malfunctions during plotting of yield data are fixed. The overall normalization for all data sets is now
used in plots comparing measured and predicted yields.

The reported chi-squared values are properly-weighted on plots and in reports. (Chi-squared and
normalization was done correctly in fits in all versions.)

It is no longer necessary to reload yield data after changing the level scheme, unless new states are
added.

===Recommendations===

To migrate from a beta version to version 1.0, export the level scheme and matrix, then import them into a
new session in this version.

=Beta Versions=

==Version 2.0.8.beta==

===Known bugs and issues===

The GUI allows only simple changes to the level scheme after the matrix and experiment have been defined (adding and deleting of bands). The release candidate (expected September 2011) has the ability to merge and reorder bands at any time.

If the level scheme is changed after calculated or experimental yield data are in memory, the user must reload the experimental data and generate new calculated yields. This has been fixed in the release candidate version (expected September 2011).

===Description===

This version uses a more accurate estimate of a typical Ge detector's ''intrinsic'' efficiency (based on Gammasphere's efficiency) to give approximate "raw" count rates. The total counts (for 100% efficienct detectors) were found to agree with perturbation calculations for weakly-coupled two-state systems, where the perturbation method is accurate.

Refer to the recommendations section if you are working with simulated yield data.

This version preserves the same backward compatibility with older session files as did version 2.0.6.beta.

This is expected to be the last beta release before a significantly upgraded release version expected in July.

===Recommendations===

If you are working with simulated data, refer to the page [[Rachel_simulated_yield_output | Rachel simulated yield output]] for a description of the new output format and the meaning of terms.

==Version 2.0.7.beta==

===Known bugs and issues===

None

===Description===

This is a bug-fix version relative to 2.0.6.beta.

# The simulated yield data are now updated properly.
# The simulated data now include the proper Ge detector solid angle factor. Simulated yield data are corrected by dividing the simulated raw counts by a factor of <math>\epsilon \Delta\Omega_\gamma</math>, where <math>\epsilon</math> is the approximate intrinsic efficiency (<math>0<\epsilon <1</math>) and <math>\Delta\Omega_\gamma</math> is the solid angle subtended by the Ge detector. In previous Rachel versions, the absence of the solid angle factor would cause a systematic disagreement between Ge detectors only if they subtended different solid angles.

Refer to the recommendations section if you are working with simulated yield data.

This version preserves the same backward compatibility with older session files as did version 2.0.6.beta.

This is expected to be the last beta release before a significantly upgraded release version expected in July.

===Recommendations===

If you are not working with simulated data, no corrections are needed.

ONLY if simulated data are in use, re-run the simulated data calculation. Answer "yes" to the prompt to re-integrate the yield data.

==Version 2.0.6.beta==

===Known bugs and issues===

When calculating simulated yields, the new simulated yield data in session (and saved session file) will not be updated unless the user answers "y" to the prompt "Re-integrate the predicted yields? [Y/n]:" This may or may not affect subsequent fits to the simulated data, depending on the changes to the matrix, experimental parameters, detector arrangements, etc. The new simulated data are written correctly to the terminal and to the gosia yield file, so fits would not be affected, but a large disagreement between simulated data and calculated yields could appear on plots. ''Remedy: always choose to re-integrated the yields when calculating simulated yield data.''

===Description===

This is a bug-fix version relative to 2.0.5.beta.

Refer to the notes for "Version 2.0.5.beta" below for the details of the bug fix and the recommended solution to update your session files.

This version preserves the same backward compatibility with older session files as did version 2.0.5.beta.

This is expected to be the last beta release before a significantly upgraded release version expected in July.

===Recommendations===

After replacing an older version of Rachel with this version, re-integrate the calculated yields in memory by selecting "Integrated yields" and "Run gosia input" and clicking "Go." This will update the calculated yields and overwrite any erroneous calculated yields that may be in memory from the bug.

==Version 2.0.5.beta==

===Known bugs and issues===

The bug in version 2.0.4.beta is still not completely fixed. See below. A new version will be released probably in mid-June 2011. Refer to this post in the Gosia forum to see how to correct for the bug:

[http://www-user.pas.rochester.edu/~gosia/phpBB3/viewtopic.php?f=9&t=9 Forum post on correcting for the bug]

===Description===

This is a bug-fix version relative to 2.0.4.beta, and some user prompts and output information is clarified.

The GUI now correctly informs you of the choices of kinematic solutions for inverse kinematics cases. The safe energy is reported before asking for the initial beam energy.

Refer to the notes for "Version 2.0.4.beta" below for the details of the bug fix and the recommended solution to update your session files.

This version preserves the same backward compatibility with older session files as did version 2.0.4.beta.

This is expected to be the last beta release before a significantly upgraded release version expected in July.

==Version 2.0.4.beta==

===Known bugs and issues===

This version has one known bug: if the user selects "View gosia input" or "Save gosia input" for some types of calculations, such as "Integrated yields," inaccurate point yields would be stored in memory after the operation. This could be more or less apparent, depending on how accurate the point-scattering approximation is for the experiments defined. The absolute cross sections then reported on plots could then be extremely inaccurate.

After running "Integrated yields" with "Run gosia input" selected, the calculated yields and absolute cross sections on plots would (again) be accurate.

This bug does not affect real yield data or simulated yield data. This bug would not affect fitting of matrix elements, since the ''corrected'' yields used by Gosia are stored in an external file only.

====Remedies====

# Upgrade to version 2.0.5.beta.
# Re-run the "Integrated yields" calculation to store accurately-calculated yields in memory. (Save the session.) This will update all calculated data in memory and on plots.

Gosia

2013-04-10T20:07:45Z

Gosia: /* Downloads */ changed rachel download to "stable versions" branch on github

Follow @GosiaCoulex on [http://twitter.com/#!/GosiaCoulex Twitter] for new version announcements and bug-fixes.

Gosia is the primary analysis code for planning experiments and analyzing data for nuclear structure physics using [[low-energy Coulomb excitation]] experiments. It is suited for both planning experiments and analysis of Coulomb excitation data. The original version was written at the University of Rochester in 1979--1980 by [[Tomasz Czosnyka]], [http://www.pas.rochester.edu/~cline/ D. Cline] and [http://www.turpion.org/links/ca4ad02e0d0fafd70a31c549cf4b3c4c_0.phtml C.Y. Wu]. T. Czosnyka maintained the code until his untimely death in 2006. [[What_is_Gosia | Learn more...]].

[[Rachel_GUI | Rachel ]] is the graphical user interface for Gosia. New Gosia users should start by installing the GUI.

==What Gosia can do for the experimenter==

===Experiment planning and simulation===

The GOSIA suite of codes are ideally suited to the design and planning of
heavy-ion induced Coulomb excitation experiments as well as the subsequent
analysis. Coulomb excitation experiments can seem deceptively simple,
especially for few-state problems, leading some experimenters to fall into
analysis traps or collecting data that have less than optimal sensitivity to
the goals of the experiment. The [[experiment_planning | Experiment planning]] page identifies potential pitfalls
in the design and analysis of Coulomb excitation experiments.

===Analysis of Coulomb excitation data===

The motivation for development of Gosia was to
implement the capability to extract measured
<math>E\lambda</math>
matrix elements model-independently from Coulomb excitation data. The first
major task required to achieve this goal was to design experiments covering a
wide dynamic range of Coulomb excitation strength that provide sufficient
experimental data to overdetermine the many unknown matrix elements.
Experimental techniques were developed to achieve this requirement in the
1980's and primarily involved Coulomb excitation measurements over a wide
range of both scattering angle and unexcited nucleus
<math>Z</math> value. The second major task was the development of Gosia to
model-independently extract the matrix elements via a least-squares search of
the data. During the 1980's and early 1990's the ready availability of beam
time at heavy-ion accelerator facilities, the availability of high-efficiency
<math>p-\gamma</math> detector facilities, and access to fast computer systems needed for the Gosia
least-squares searches, enabled the first model-independent extraction of
<math>E\lambda</math>
matrix elements from multiple Coulomb excitation data.

[[Model_independent_analysis | Model-independent analysis]]

[[Model_dependent_analysis | Model-dependent analysis]]

==Selected special topics==

Other topics can be found using the search box at the left.

[[common_mistakes | Common mistakes in Gosia calculations]]

[[Integrated_yields | Interpreting the "integrated yields" output]]

[[normalization_of_yield_data | Normalization of gamma-ray yield data]]

==Downloads==

Note that Gosia version numbers are coded as YYYYMMDD.N, where N is a minor update or bug-fix on the original YYYYMMDD version. For example, version 20110524.2 was released on 2011-11-07. ''Some recent releases have an incorrect message "LATEST REVISION- JUNE 2006" in the output file header.''

(Right-click to download source codes.)

* The current version (20120510) of the [http://www.pas.rochester.edu/~cline/Gosia/Gosia_Manual_20120510.pdf Gosia manual]
* The latest release (20110524.2) of [http://www.pas.rochester.edu/%7Ehayes/gosia_versions/gosia_20110524.2.f Gosia]
* The latest release (2_20081208.14) of [http://www.pas.rochester.edu/%7Ehayes/gosia_versions/gosia2_20081208.14.f Gosia2], for analysing simultaneous Coulomb excitation of target and projectile, using a common normalization.
* [https://github.com/adamhayes/Rachel/archive/stable_versions.zip Rachel release version 1.3.3], the graphical interface for Gosia. See also the [[Gui_release_notes | Version notes]] page for new features.
* [http://www.pas.rochester.edu/%7Ecline/Research/GOSIAcodes/pawel-06-mod.f Pawel], the Gosia version to treat excitation of a nucleus in an isomer state
* [http://www.pas.rochester.edu/%7Ecline/Research/GOSIAcodes/gosia_arm.for ANNL (Anneal)], a special version of Gosia developed by Rich Ibbotson that uses simulated annealing techniques to locate minima
* [http://www.pas.rochester.edu/%7Ecline/Research/GOSIAcodes/sigma.f Sigma], the 2006 Fortran source code for deducing the quadrupole invariants from the E2 matrix elements determined by Gosia
* [http://www.pas.rochester.edu/%7Ecline/Research/GOSIAcodes/gremlin.f GREMLIN], the gamma-ray detector efficiency code developed for use with GOSIA in 1987 by Alexander Kavka

* The set of [http://www.pas.rochester.edu/~hayes/gosia_downloads/fit_demo_2011.tar demonstration files] to accompany the Gosia tutorial in chapter 14 of the Gosia Manual

==Installing Gosia==

Installation of Gosia requires only the following steps:

# Compiling gosia with a Fortran compiler
# Setting the default path or alias to find Gosia, if desired. (See also the path requirements for [[Gui|Rachel]] and the [[rachel setup file]].)

Most standard Fortran 77 compilers will produce a working Gosia executable. GNU
<tt>g77</tt> is recommended, but is becoming deprecated on newer machines. The newer,
more commonly used <tt>gfortran</tt> will also work. Intel Fortran should work, but is not recommended, because future error trapping patches may not work well with the Intel compiler. For more information about
compiling and standard builds, refer to the page [[compiling gosia | Compiling Gosia]].

== User support ==

===The graphical interface for Gosia===

A [[Gui | GUI (Graphical User Interface) called Rachel]] has been developed. The current version can be found in the download section above. Novice Gosia users can use this interface to develop properly formatted template Gosia input files. These can be modified by comparing the input lines to the Gosia manual instructions, or Gosia can be run entirely from within the GUI for many typical [[simulation (experiment planning)]] and analysis problems.

===Example Gosia input files===

Chapter 14 of the current [[Gosia Manual]] contains an annotated example input, a flowchart of the procedures that must be run during analysis of data and a tutorial based on a set of example files which can be obtained on the [[Gosia_tutorials]] page.

===The Gosia Forum===

The new gosia forum can be found [http://www-user.pas.rochester.edu/~gosia/phpBB3/index.php here.] As described on the [[Gosia_users'_forum]] page, the Forum is the appropriate place to post requests for help with specific Gosia calculations and for experienced users to give answers and advice.

==Maintenance of the Gosia codes==

The Gosia codes are maintained by the [[Gosia_Steering_Committee]].

==Purpose of the Gosia Wiki==

While the Wiki will eventually mirror much of the content of the [http://www.pas.rochester.edu/%7Ecline/Gosia/2011manual20110428.pdf Gosia Manual], the purpose is not to reproduce the manual in its entirety. The Gosia Manual should still be considered the primary reference for running Gosia. The advantage of the Wiki format is that an unlimited number of pages can be added here by interested users on special topics that are not appropriate for a users' manual. These may include

* Examples of Gosia input and output for common calculations, such as
** input file templates
** common detector definitions
** proper data set normalizations
** fitting strategies for systems with many matrix elements
* Solutions for difficult calculations, such as extreme inverse kinematics cases
* More detailed theory notes

* Examples of the use of [[Pawel]], [[ANNL]] and other codes in the Gosia suite

Wiki users are encouraged to contribute anything that should be of general interest to the Gosia user community and to move solved problems from the Forum if they may be of general interest.

==Help for the Wiki user==

Consult the page [[Wiki_formatting]] for basic formatting instructions to contribute to this Wiki.

==Links==

Some of the following pages will be absorbed into the pages on the new Wiki server.

* The [http://www.slcj.uw.edu.pl/en/0.html Warsaw Heavy Ion Laboratory] page and the
* [http://www.slcj.uw.edu.pl/gosia_workshop 2008 Gosia Workshop] at Warsaw
* The [http://www.ikp.uni-koeln.de/~warr/gosia/ Cologne Gosia page]
* and the [http://www.pas.rochester.edu/~cline/Gosia/index.html Rochester Gosia page]

==Notes==

<references/>

Gosia

2013-04-10T19:58:42Z

Gosia: /* Downloads */ Changed rachel download link to the github repo, master branch. No need to mirror a tar file now.

Follow @GosiaCoulex on [http://twitter.com/#!/GosiaCoulex Twitter] for new version announcements and bug-fixes.

Gosia is the primary analysis code for planning experiments and analyzing data for nuclear structure physics using [[low-energy Coulomb excitation]] experiments. It is suited for both planning experiments and analysis of Coulomb excitation data. The original version was written at the University of Rochester in 1979--1980 by [[Tomasz Czosnyka]], [http://www.pas.rochester.edu/~cline/ D. Cline] and [http://www.turpion.org/links/ca4ad02e0d0fafd70a31c549cf4b3c4c_0.phtml C.Y. Wu]. T. Czosnyka maintained the code until his untimely death in 2006. [[What_is_Gosia | Learn more...]].

[[Rachel_GUI | Rachel ]] is the graphical user interface for Gosia. New Gosia users should start by installing the GUI.

==What Gosia can do for the experimenter==

===Experiment planning and simulation===

The GOSIA suite of codes are ideally suited to the design and planning of
heavy-ion induced Coulomb excitation experiments as well as the subsequent
analysis. Coulomb excitation experiments can seem deceptively simple,
especially for few-state problems, leading some experimenters to fall into
analysis traps or collecting data that have less than optimal sensitivity to
the goals of the experiment. The [[experiment_planning | Experiment planning]] page identifies potential pitfalls
in the design and analysis of Coulomb excitation experiments.

===Analysis of Coulomb excitation data===

The motivation for development of Gosia was to
implement the capability to extract measured
<math>E\lambda</math>
matrix elements model-independently from Coulomb excitation data. The first
major task required to achieve this goal was to design experiments covering a
wide dynamic range of Coulomb excitation strength that provide sufficient
experimental data to overdetermine the many unknown matrix elements.
Experimental techniques were developed to achieve this requirement in the
1980's and primarily involved Coulomb excitation measurements over a wide
range of both scattering angle and unexcited nucleus
<math>Z</math> value. The second major task was the development of Gosia to
model-independently extract the matrix elements via a least-squares search of
the data. During the 1980's and early 1990's the ready availability of beam
time at heavy-ion accelerator facilities, the availability of high-efficiency
<math>p-\gamma</math> detector facilities, and access to fast computer systems needed for the Gosia
least-squares searches, enabled the first model-independent extraction of
<math>E\lambda</math>
matrix elements from multiple Coulomb excitation data.

[[Model_independent_analysis | Model-independent analysis]]

[[Model_dependent_analysis | Model-dependent analysis]]

==Selected special topics==

Other topics can be found using the search box at the left.

[[common_mistakes | Common mistakes in Gosia calculations]]

[[Integrated_yields | Interpreting the "integrated yields" output]]

[[normalization_of_yield_data | Normalization of gamma-ray yield data]]

==Downloads==

Note that Gosia version numbers are coded as YYYYMMDD.N, where N is a minor update or bug-fix on the original YYYYMMDD version. For example, version 20110524.2 was released on 2011-11-07. ''Some recent releases have an incorrect message "LATEST REVISION- JUNE 2006" in the output file header.''

(Right-click to download source codes.)

* The current version (20120510) of the [http://www.pas.rochester.edu/~cline/Gosia/Gosia_Manual_20120510.pdf Gosia manual]
* The latest release (20110524.2) of [http://www.pas.rochester.edu/%7Ehayes/gosia_versions/gosia_20110524.2.f Gosia]
* The latest release (2_20081208.14) of [http://www.pas.rochester.edu/%7Ehayes/gosia_versions/gosia2_20081208.14.f Gosia2], for analysing simultaneous Coulomb excitation of target and projectile, using a common normalization.
* [https://github.com/adamhayes/Rachel/archive/master.zip Rachel release version 1.3.3], the graphical interface for Gosia. See also the [[Gui_release_notes | Version notes]] page for new features.
* [http://www.pas.rochester.edu/%7Ecline/Research/GOSIAcodes/pawel-06-mod.f Pawel], the Gosia version to treat excitation of a nucleus in an isomer state
* [http://www.pas.rochester.edu/%7Ecline/Research/GOSIAcodes/gosia_arm.for ANNL (Anneal)], a special version of Gosia developed by Rich Ibbotson that uses simulated annealing techniques to locate minima
* [http://www.pas.rochester.edu/%7Ecline/Research/GOSIAcodes/sigma.f Sigma], the 2006 Fortran source code for deducing the quadrupole invariants from the E2 matrix elements determined by Gosia
* [http://www.pas.rochester.edu/%7Ecline/Research/GOSIAcodes/gremlin.f GREMLIN], the gamma-ray detector efficiency code developed for use with GOSIA in 1987 by Alexander Kavka

* The set of [http://www.pas.rochester.edu/~hayes/gosia_downloads/fit_demo_2011.tar demonstration files] to accompany the Gosia tutorial in chapter 14 of the Gosia Manual

==Installing Gosia==

Installation of Gosia requires only the following steps:

# Compiling gosia with a Fortran compiler
# Setting the default path or alias to find Gosia, if desired. (See also the path requirements for [[Gui|Rachel]] and the [[rachel setup file]].)

Most standard Fortran 77 compilers will produce a working Gosia executable. GNU
<tt>g77</tt> is recommended, but is becoming deprecated on newer machines. The newer,
more commonly used <tt>gfortran</tt> will also work. Intel Fortran should work, but is not recommended, because future error trapping patches may not work well with the Intel compiler. For more information about
compiling and standard builds, refer to the page [[compiling gosia | Compiling Gosia]].

== User support ==

===The graphical interface for Gosia===

A [[Gui | GUI (Graphical User Interface) called Rachel]] has been developed. The current version can be found in the download section above. Novice Gosia users can use this interface to develop properly formatted template Gosia input files. These can be modified by comparing the input lines to the Gosia manual instructions, or Gosia can be run entirely from within the GUI for many typical [[simulation (experiment planning)]] and analysis problems.

===Example Gosia input files===

Chapter 14 of the current [[Gosia Manual]] contains an annotated example input, a flowchart of the procedures that must be run during analysis of data and a tutorial based on a set of example files which can be obtained on the [[Gosia_tutorials]] page.

===The Gosia Forum===

The new gosia forum can be found [http://www-user.pas.rochester.edu/~gosia/phpBB3/index.php here.] As described on the [[Gosia_users'_forum]] page, the Forum is the appropriate place to post requests for help with specific Gosia calculations and for experienced users to give answers and advice.

==Maintenance of the Gosia codes==

The Gosia codes are maintained by the [[Gosia_Steering_Committee]].

==Purpose of the Gosia Wiki==

While the Wiki will eventually mirror much of the content of the [http://www.pas.rochester.edu/%7Ecline/Gosia/2011manual20110428.pdf Gosia Manual], the purpose is not to reproduce the manual in its entirety. The Gosia Manual should still be considered the primary reference for running Gosia. The advantage of the Wiki format is that an unlimited number of pages can be added here by interested users on special topics that are not appropriate for a users' manual. These may include

* Examples of Gosia input and output for common calculations, such as
** input file templates
** common detector definitions
** proper data set normalizations
** fitting strategies for systems with many matrix elements
* Solutions for difficult calculations, such as extreme inverse kinematics cases
* More detailed theory notes

* Examples of the use of [[Pawel]], [[ANNL]] and other codes in the Gosia suite

Wiki users are encouraged to contribute anything that should be of general interest to the Gosia user community and to move solved problems from the Forum if they may be of general interest.

==Help for the Wiki user==

Consult the page [[Wiki_formatting]] for basic formatting instructions to contribute to this Wiki.

==Links==

Some of the following pages will be absorbed into the pages on the new Wiki server.

* The [http://www.slcj.uw.edu.pl/en/0.html Warsaw Heavy Ion Laboratory] page and the
* [http://www.slcj.uw.edu.pl/gosia_workshop 2008 Gosia Workshop] at Warsaw
* The [http://www.ikp.uni-koeln.de/~warr/gosia/ Cologne Gosia page]
* and the [http://www.pas.rochester.edu/~cline/Gosia/index.html Rochester Gosia page]

==Notes==

<references/>

Gosia

2013-04-06T13:31:27Z

Gosia: /* Downloads */ Changed to rachel 1.3.2

Follow @GosiaCoulex on [http://twitter.com/#!/GosiaCoulex Twitter] for new version announcements and bug-fixes.

Gosia is the primary analysis code for planning experiments and analyzing data for nuclear structure physics using [[low-energy Coulomb excitation]] experiments. It is suited for both planning experiments and analysis of Coulomb excitation data. The original version was written at the University of Rochester in 1979--1980 by [[Tomasz Czosnyka]], [http://www.pas.rochester.edu/~cline/ D. Cline] and [http://www.turpion.org/links/ca4ad02e0d0fafd70a31c549cf4b3c4c_0.phtml C.Y. Wu]. T. Czosnyka maintained the code until his untimely death in 2006. [[What_is_Gosia | Learn more...]].

[[Rachel_GUI | Rachel ]] is the graphical user interface for Gosia. New Gosia users should start by installing the GUI.

==What Gosia can do for the experimenter==

===Experiment planning and simulation===

The GOSIA suite of codes are ideally suited to the design and planning of
heavy-ion induced Coulomb excitation experiments as well as the subsequent
analysis. Coulomb excitation experiments can seem deceptively simple,
especially for few-state problems, leading some experimenters to fall into
analysis traps or collecting data that have less than optimal sensitivity to
the goals of the experiment. The [[experiment_planning | Experiment planning]] page identifies potential pitfalls
in the design and analysis of Coulomb excitation experiments.

===Analysis of Coulomb excitation data===

The motivation for development of Gosia was to
implement the capability to extract measured
<math>E\lambda</math>
matrix elements model-independently from Coulomb excitation data. The first
major task required to achieve this goal was to design experiments covering a
wide dynamic range of Coulomb excitation strength that provide sufficient
experimental data to overdetermine the many unknown matrix elements.
Experimental techniques were developed to achieve this requirement in the
1980's and primarily involved Coulomb excitation measurements over a wide
range of both scattering angle and unexcited nucleus
<math>Z</math> value. The second major task was the development of Gosia to
model-independently extract the matrix elements via a least-squares search of
the data. During the 1980's and early 1990's the ready availability of beam
time at heavy-ion accelerator facilities, the availability of high-efficiency
<math>p-\gamma</math> detector facilities, and access to fast computer systems needed for the Gosia
least-squares searches, enabled the first model-independent extraction of
<math>E\lambda</math>
matrix elements from multiple Coulomb excitation data.

[[Model_independent_analysis | Model-independent analysis]]

[[Model_dependent_analysis | Model-dependent analysis]]

==Selected special topics==

Other topics can be found using the search box at the left.

[[common_mistakes | Common mistakes in Gosia calculations]]

[[Integrated_yields | Interpreting the "integrated yields" output]]

[[normalization_of_yield_data | Normalization of gamma-ray yield data]]

==Downloads==

Note that Gosia version numbers are coded as YYYYMMDD.N, where N is a minor update or bug-fix on the original YYYYMMDD version. For example, version 20110524.2 was released on 2011-11-07. ''Some recent releases have an incorrect message "LATEST REVISION- JUNE 2006" in the output file header.''

(Right-click to download source codes.)

* The current version (20120510) of the [http://www.pas.rochester.edu/~cline/Gosia/Gosia_Manual_20120510.pdf Gosia manual]
* The latest release (20110524.2) of [http://www.pas.rochester.edu/%7Ehayes/gosia_versions/gosia_20110524.2.f Gosia]
* The latest release (2_20081208.14) of [http://www.pas.rochester.edu/%7Ehayes/gosia_versions/gosia2_20081208.14.f Gosia2], for analysing simultaneous Coulomb excitation of target and projectile, using a common normalization.
* [http://www.pas.rochester.edu/~hayes/rachel_1/rachel_1.3.2.tar Rachel release version 1.3.2], the graphical interface for Gosia. See also the [[Gui_release_notes | Version notes]] page for new features.
* [http://www.pas.rochester.edu/%7Ecline/Research/GOSIAcodes/pawel-06-mod.f Pawel], the Gosia version to treat excitation of a nucleus in an isomer state
* [http://www.pas.rochester.edu/%7Ecline/Research/GOSIAcodes/gosia_arm.for ANNL (Anneal)], a special version of Gosia developed by Rich Ibbotson that uses simulated annealing techniques to locate minima
* [http://www.pas.rochester.edu/%7Ecline/Research/GOSIAcodes/sigma.f Sigma], the 2006 Fortran source code for deducing the quadrupole invariants from the E2 matrix elements determined by Gosia
* [http://www.pas.rochester.edu/%7Ecline/Research/GOSIAcodes/gremlin.f GREMLIN], the gamma-ray detector efficiency code developed for use with GOSIA in 1987 by Alexander Kavka

* The set of [http://www.pas.rochester.edu/~hayes/gosia_downloads/fit_demo_2011.tar demonstration files] to accompany the Gosia tutorial in chapter 14 of the Gosia Manual

==Installing Gosia==

Installation of Gosia requires only the following steps:

# Compiling gosia with a Fortran compiler
# Setting the default path or alias to find Gosia, if desired. (See also the path requirements for [[Gui|Rachel]] and the [[rachel setup file]].)

Most standard Fortran 77 compilers will produce a working Gosia executable. GNU
<tt>g77</tt> is recommended, but is becoming deprecated on newer machines. The newer,
more commonly used <tt>gfortran</tt> will also work. Intel Fortran should work, but is not recommended, because future error trapping patches may not work well with the Intel compiler. For more information about
compiling and standard builds, refer to the page [[compiling gosia | Compiling Gosia]].

== User support ==

===The graphical interface for Gosia===

A [[Gui | GUI (Graphical User Interface) called Rachel]] has been developed. The current version can be found in the download section above. Novice Gosia users can use this interface to develop properly formatted template Gosia input files. These can be modified by comparing the input lines to the Gosia manual instructions, or Gosia can be run entirely from within the GUI for many typical [[simulation (experiment planning)]] and analysis problems.

===Example Gosia input files===

Chapter 14 of the current [[Gosia Manual]] contains an annotated example input, a flowchart of the procedures that must be run during analysis of data and a tutorial based on a set of example files which can be obtained on the [[Gosia_tutorials]] page.

===The Gosia Forum===

The new gosia forum can be found [http://www-user.pas.rochester.edu/~gosia/phpBB3/index.php here.] As described on the [[Gosia_users'_forum]] page, the Forum is the appropriate place to post requests for help with specific Gosia calculations and for experienced users to give answers and advice.

==Maintenance of the Gosia codes==

The Gosia codes are maintained by the [[Gosia_Steering_Committee]].

==Purpose of the Gosia Wiki==

While the Wiki will eventually mirror much of the content of the [http://www.pas.rochester.edu/%7Ecline/Gosia/2011manual20110428.pdf Gosia Manual], the purpose is not to reproduce the manual in its entirety. The Gosia Manual should still be considered the primary reference for running Gosia. The advantage of the Wiki format is that an unlimited number of pages can be added here by interested users on special topics that are not appropriate for a users' manual. These may include

* Examples of Gosia input and output for common calculations, such as
** input file templates
** common detector definitions
** proper data set normalizations
** fitting strategies for systems with many matrix elements
* Solutions for difficult calculations, such as extreme inverse kinematics cases
* More detailed theory notes

* Examples of the use of [[Pawel]], [[ANNL]] and other codes in the Gosia suite

Wiki users are encouraged to contribute anything that should be of general interest to the Gosia user community and to move solved problems from the Forum if they may be of general interest.

==Help for the Wiki user==

Consult the page [[Wiki_formatting]] for basic formatting instructions to contribute to this Wiki.

==Links==

Some of the following pages will be absorbed into the pages on the new Wiki server.

* The [http://www.slcj.uw.edu.pl/en/0.html Warsaw Heavy Ion Laboratory] page and the
* [http://www.slcj.uw.edu.pl/gosia_workshop 2008 Gosia Workshop] at Warsaw
* The [http://www.ikp.uni-koeln.de/~warr/gosia/ Cologne Gosia page]
* and the [http://www.pas.rochester.edu/~cline/Gosia/index.html Rochester Gosia page]

==Notes==

<references/>

Gosia

2012-12-12T21:14:14Z

Gosia: /* Downloads */ Updated to Rachel 1.3.1

Follow @GosiaCoulex on [http://twitter.com/#!/GosiaCoulex Twitter] for new version announcements and bug-fixes.

Gosia is the primary analysis code for planning experiments and analyzing data for nuclear structure physics using [[low-energy Coulomb excitation]] experiments. It is suited for both planning experiments and analysis of Coulomb excitation data. The original version was written at the University of Rochester in 1979--1980 by [[Tomasz Czosnyka]], [http://www.pas.rochester.edu/~cline/ D. Cline] and [http://www.turpion.org/links/ca4ad02e0d0fafd70a31c549cf4b3c4c_0.phtml C.Y. Wu]. T. Czosnyka maintained the code until his untimely death in 2006. [[What_is_Gosia | Learn more...]].

==What Gosia can do for the experimenter==

===Experiment planning and simulation===

The GOSIA suite of codes are ideally suited to the design and planning of
heavy-ion induced Coulomb excitation experiments as well as the subsequent
analysis. Coulomb excitation experiments can seem deceptively simple,
especially for few-state problems, leading some experimenters to fall into
analysis traps or collecting data that have less than optimal sensitivity to
the goals of the experiment. The [[experiment_planning | Experiment planning]] page identifies potential pitfalls
in the design and analysis of Coulomb excitation experiments.

===Analysis of Coulomb excitation data===

The motivation for development of Gosia was to
implement the capability to extract measured
<math>E\lambda</math>
matrix elements model-independently from Coulomb excitation data. The first
major task required to achieve this goal was to design experiments covering a
wide dynamic range of Coulomb excitation strength that provide sufficient
experimental data to overdetermine the many unknown matrix elements.
Experimental techniques were developed to achieve this requirement in the
1980's and primarily involved Coulomb excitation measurements over a wide
range of both scattering angle and unexcited nucleus
<math>Z</math> value. The second major task was the development of Gosia to
model-independently extract the matrix elements via a least-squares search of
the data. During the 1980's and early 1990's the ready availability of beam
time at heavy-ion accelerator facilities, the availability of high-efficiency
<math>p-\gamma</math> detector facilities, and access to fast computer systems needed for the Gosia
least-squares searches, enabled the first model-independent extraction of
<math>E\lambda</math>
matrix elements from multiple Coulomb excitation data.

[[Model_independent_analysis | Model-independent analysis]]

[[Model_dependent_analysis | Model-dependent analysis]]

==Selected special topics==

Other topics can be found using the search box at the left.

[[common_mistakes | Common mistakes in Gosia calculations]]

[[Integrated_yields | Interpreting the "integrated yields" output]]

[[normalization_of_yield_data | Normalization of gamma-ray yield data]]

==Downloads==

Note that Gosia version numbers are coded as YYYYMMDD.N, where N is a minor update or bug-fix on the original YYYYMMDD version. For example, version 20110524.2 was released on 2011-11-07. ''Some recent releases have an incorrect message "LATEST REVISION- JUNE 2006" in the output file header.''

(Right-click to download source codes.)

* The current version (20120510) of the [http://www.pas.rochester.edu/~cline/Gosia/Gosia_Manual_20120510.pdf Gosia manual]
* The latest release (20110524.2) of [http://www.pas.rochester.edu/%7Ehayes/gosia_versions/gosia_20110524.2.f Gosia]
* The latest release (2_20081208.14) of [http://www.pas.rochester.edu/%7Ehayes/gosia_versions/gosia2_20081208.14.f Gosia2], for analysing simultaneous Coulomb excitation of target and projectile, using a common normalization.
* [http://www.pas.rochester.edu/~hayes/rachel_1/rachel_distribution_1.3.1.tar Rachel release version 1.3.1], the graphical interface for Gosia. See also the [[Gui_release_notes | Version notes]] page for new features.
* [http://www.pas.rochester.edu/%7Ecline/Research/GOSIAcodes/pawel-06-mod.f Pawel], the Gosia version to treat excitation of a nucleus in an isomer state
* [http://www.pas.rochester.edu/%7Ecline/Research/GOSIAcodes/gosia_arm.for ANNL (Anneal)], a special version of Gosia developed by Rich Ibbotson that uses simulated annealing techniques to locate minima
* [http://www.pas.rochester.edu/%7Ecline/Research/GOSIAcodes/sigma.f Sigma], the 2006 Fortran source code for deducing the quadrupole invariants from the E2 matrix elements determined by Gosia
* [http://www.pas.rochester.edu/%7Ecline/Research/GOSIAcodes/gremlin.f GREMLIN], the gamma-ray detector efficiency code developed for use with GOSIA in 1987 by Alexander Kavka

* The set of [http://www.pas.rochester.edu/~hayes/gosia_downloads/fit_demo_2011.tar demonstration files] to accompany the Gosia tutorial in chapter 14 of the Gosia Manual

==Installing Gosia==

Installation of Gosia requires only the following steps:

# Compiling gosia with a Fortran compiler
# Setting the default path or alias to find Gosia, if desired. (See also the path requirements for [[Gui|Rachel]] and the [[rachel setup file]].)

Most standard Fortran 77 compilers will produce a working Gosia executable. GNU
<tt>g77</tt> is recommended, but is becoming deprecated on newer machines. The newer,
more commonly used <tt>gfortran</tt> will also work. Intel Fortran should work, but is not recommended, because future error trapping patches may not work well with the Intel compiler. For more information about
compiling and standard builds, refer to the page [[compiling gosia | Compiling Gosia]].

== User support ==

===The graphical interface for Gosia===

A [[Gui | GUI (Graphical User Interface) called Rachel]] has been developed. The current version can be found in the download section above. Novice Gosia users can use this interface to develop properly formatted template Gosia input files. These can be modified by comparing the input lines to the Gosia manual instructions, or Gosia can be run entirely from within the GUI for many typical [[simulation (experiment planning)]] and analysis problems.

===Example Gosia input files===

Chapter 14 of the current [[Gosia Manual]] contains an annotated example input, a flowchart of the procedures that must be run during analysis of data and a tutorial based on a set of example files which can be obtained on the [[Gosia_tutorials]] page.

===The Gosia Forum===

The new gosia forum can be found [http://www-user.pas.rochester.edu/~gosia/phpBB3/index.php here.] As described on the [[Gosia_users'_forum]] page, the Forum is the appropriate place to post requests for help with specific Gosia calculations and for experienced users to give answers and advice.

==Maintenance of the Gosia codes==

The Gosia codes are maintained by the [[Gosia_Steering_Committee]].

==Purpose of the Gosia Wiki==

While the Wiki will eventually mirror much of the content of the [http://www.pas.rochester.edu/%7Ecline/Gosia/2011manual20110428.pdf Gosia Manual], the purpose is not to reproduce the manual in its entirety. The Gosia Manual should still be considered the primary reference for running Gosia. The advantage of the Wiki format is that an unlimited number of pages can be added here by interested users on special topics that are not appropriate for a users' manual. These may include

* Examples of Gosia input and output for common calculations, such as
** input file templates
** common detector definitions
** proper data set normalizations
** fitting strategies for systems with many matrix elements
* Solutions for difficult calculations, such as extreme inverse kinematics cases
* More detailed theory notes

* Examples of the use of [[Pawel]], [[ANNL]] and other codes in the Gosia suite

Wiki users are encouraged to contribute anything that should be of general interest to the Gosia user community and to move solved problems from the Forum if they may be of general interest.

==Help for the Wiki user==

Consult the page [[Wiki_formatting]] for basic formatting instructions to contribute to this Wiki.

==Links==

Some of the following pages will be absorbed into the pages on the new Wiki server.

* The [http://www.slcj.uw.edu.pl/en/0.html Warsaw Heavy Ion Laboratory] page and the
* [http://www.slcj.uw.edu.pl/gosia_workshop 2008 Gosia Workshop] at Warsaw
* The [http://www.ikp.uni-koeln.de/~warr/gosia/ Cologne Gosia page]
* and the [http://www.pas.rochester.edu/~cline/Gosia/index.html Rochester Gosia page]

==Notes==

<references/>

Gui release notes

2012-12-12T19:28:21Z

Gosia: /* Changes */

These versions are listed from newest to oldest.

=Versions 1.x=

==Version 1.3.1==

===Description===

New features: Thick-target calculations are now fully-automated. The user is prompted if the thick target requires extra consideration, whereas, in older versions, the user would get error messages and have to fix it herself.

===Changes===

* Auto-complete has been added for filenames, so it is easier to load detector arrays, for example.
* Notices are displayed automatically when a new version of Rachel is available.
* The simulation table output contains all of the relevant data about each experiment.

====Bug-fixes====

Fixed a bug that prevented proper storage of calculated errors in the matrix elements. The output of the error calculation was correct, but those error bars could not be retrieved later.

This version properly flushes the input buffer (stdin) before prompts, so that accidental keystrokes are ignored.

===Known bugs and issues===

The plots of collision functions are still not available for all multipoles.

In all versions, it is possible to save an empty session over an existing session. Frequent backups of the working directory should be made.

This version is not backward-compatible with the beta versions; users must re-define the experimental
definitions. Level and matrix data CAN be exported from beta versions and imported to this version. All
later versions are expected to preserve backward compatibility with this version.
Plots of collision functions cannot be generated for all states.

===Recommendations===

==Version 1.3.0==

===Description===

New features: Thick-target calculations are now fully-automated. The user is prompted if the thick target requires extra consideration, whereas, in older versions, the user would get error messages and have to fix it herself.

===Changes===

* Thick target calculations are now fully-automated
* Lifetime calculations are now fully-automated (one-click)
* Vacuum deorientation calculations are now fully-automated and can be run at any time when the experimental setup is complete.
* Two logs have been added: a procedure log with timestamps and a user log that can be edited inside the GUI.
* Tab-completion of filenames and paths
* Improved reading of AGS level schemes that are missing spin/parity assignments
* The assumed Q-value is lowered automatically when the projectile energy is too low

====Bug-fixes====

Fixed a bug that used the wrong kinematic solution for inverse kinematics in some fits. This caused inaccuracy in finding the minimum in some cases.

Errors are more graceful if the user tries to perform an operation before setup is complete.

The splash screen now renders properly.

===Known bugs and issues===

In all versions, it is possible to save an empty session over an existing session. Frequent backups of the working directory should be made.

This version is not backward-compatible with the beta versions; users must re-define the experimental
definitions. Level and matrix data CAN be exported from beta versions and imported to this version. All
later versions are expected to preserve backward compatibility with version 1.2.0
Plots of collision functions cannot be generated for all states.

===Recommendations===

To migrate from a beta version to this version, export the level scheme and matrix, then import them into a
new session in this version.

==Version 1.2.0==

===Description===

===Changes===

The normalization of calculated yields to experimental yields in the GUI now matches the normalization used by Gosia. The previous Rachel versions weighted yields by their fractional errors when calculating the normalizations. This can make plotting and understanding the chi-squared values confusing. For example, when low-intensity gamma-ray yields are poorly reproduced, the high-intensity yields can appear to be poorly reproduced.

The new method in version 1.2.0 weights the individual yields' contributions to the normalization factor by their intensity only.

This version is backward-compatible with all versions 1.0 and later.

See version 1.0.

====Bug-fixes====

===Known bugs and issues===

In all versions, it is possible to save an empty session over an existing session. Frequent backups of the working directory should be made.

This version is not backward-compatible with the beta versions; users must re-define the experimental
definitions. Level and matrix data CAN be exported from beta versions and imported to this version. All
later versions are expected to preserve backward compatibility with this version.
Plots of collision functions cannot be generated for all states.

===Recommendations===

To migrate from a beta version to version 1.2.0, export the level scheme and matrix, then import them into a
new session in this version.

==Version 1.1.5==

===Description===

This version is backward-compatible with all versions 1.0 and later.

See version 1.0.

===Changes===

None

====Bug-fixes====

A bug that affected only the fitting and corrected yield calculations has been fixed. Occasionally, but not always, this bug resulted in incorrect yield data being passed to Gosia using the "Write Gosia yld file" button, which would affect fitting. It did not affect integrated yield calculations, simulations or plotting, and the integrated yield function still gave the correct chi-squared value.

See the recommendations section below.

===Known bugs and issues===

In all versions to date, the sensitivity map (OP,MAP) is calculated in the same Gosia call that does a fit (OP,MINI). This works in most cases, but it may cause errors occasionally in inverse-kinematics calculations. (This is not confirmed, but the error will be reported if it occurs.) The sensitivity map will be calculated in a separate call in the next bug-fix version.

Level schemes that do not have spins in order of increasing energy within a band, e.g. 1-, 0-, 3-, 2-..., will cause errors in generating the Gosia input, and the full yield data set may not be passed to Gosia for fitting matrix elements. The expected date for the bug fix is not known. In the meantime, separate each state to a separate band. (It may be sufficient to separate the ground state and put it in band #1, then put all remaining states in another band.) Be sure to check the K values that the GUI has assumed and normalization constants for the Alaga rule compared to the in-band rotor model.

In all versions, it is possible to save an empty session over an existing session. Frequent backups of the working directory should be made.

This version is not backward-compatible with the beta versions; users must re-define the experimental
definitions. Level and matrix data CAN be exported from beta versions and imported to this version. All
later versions are expected to preserve backward compatibility with this version.
Plots of collision functions cannot be generated for all states.

===Recommendations===

Refer to the bug-fix above. To correct possible errors in prior fits, do the following 'if a fit has been performed'.
No corrections are needed if a fit has not been performed with an earlier version.

# Rewrite the Gosia yield file using the button "Write Gosia yld file."
# Re-run the "Make corrected yields" calculation.
# Re-run the "Fit" calculation.
# Re-run any error calculations that have been done.
# Before comparing experimental yields to calculated yields (plotting, etc.), re-run "Integrated yields" to update the calculated yields for the new matrix elements.
# Save the session.

The new fitted matrix elements can be compared to previous calculations to see if the bug had affected fits.

To migrate from a beta version to this version, export the level scheme and matrix, then import them into a
new session in this version.

==Version 1.1.4==

===Description===

This version is backward-compatible with all versions 1.0 and later.

See version 1.0.

===Changes===

The user must now answer "y" or "n" when asked whether to save the session upon exiting. This helps to prevent accidentally overwriting the session file.

====Bug-fixes====

All yield data are properly displayed when plotting yields for merged bands.

Some previous versions did not parse comments properly in detector array files has been fixed. This bug had made it impossible to import a few of the array files that come with the Rachel package.

===Known bugs and issues===

In all versions, it is possible to save an empty session over an existing session. Frequent backups of the working directory should be made.

This version is not backward-compatible with the beta versions; users must re-define the experimental
definitions. Level and matrix data CAN be exported from beta versions and imported to this version. All
later versions are expected to preserve backward compatibility with version 1.1.4.
Plots of collision functions cannot be generated for all states.

===Recommendations===

To migrate from a beta version to version 1.1.4, export the level scheme and matrix, then import them into a
new session in this version.

==Version 1.1.3==

===Known bugs and issues===

''The following bug affects the plotting function, but does not affect the accuracy of calculations.''

In some cases, plots of gamma-ray yields will not show all of the data for merged bands. For example, if odd-spin states in band "b" are merged into the even spin states of band "a," a plot of the yield data for the merged band "a" may not show the yields from the states of the original band "b."

In all versions, it is possible to save an empty session over an existing session. Frequent backups of the working directory should be made.

This version is not backward-compatible with the beta versions; users must re-define the experimental
definitions. Level and matrix data CAN be exported from beta versions and imported to this version. All
later versions are expected to preserve backward compatibility with version 1.1.3.
Plots of collision functions cannot be generated for all states.

===Description===

See version 1.0.

====Bug-fixes====

It is now possible to add in-band matrix elements of any multipolarity that conserves parity, i.e., E2, E4, E6 and M1. There was no accuracy error associated with this bug.

===Recommendations===

To migrate from a beta version to version 1.1.3, export the level scheme and matrix, then import them into a
new session in this version.

==Version 1.1.2==

===Known bugs and issues===

In all versions, it is possible to save an empty session over an existing session. Frequent backups of the working directory should be made.

This version is not backward-compatible with the beta versions; users must re-define the experimental
definitions. Level and matrix data CAN be exported from beta versions and imported to this version. All
later versions are expected to preserve backward compatibility with version 1.1.2.
Plots of collision functions cannot be generated for all states.

===Description===

See version 1.0.

====Bug-fixes====

A bug that sometimes caused the deorientation coefficient calculation to fail has been fixed. Calculations were accurate in previous versions, but sometimes could not be read from the Gosia output.

===Recommendations===

To migrate from a beta version to version 1.1.2, export the level scheme and matrix, then import them into a
new session in this version.

==Version 1.1.1==

===Known bugs and issues===

In all versions, it is possible to save an empty session over an existing session. Frequent backups of the working directory should be made.

This version is not backward-compatible with the beta versions; users must re-define the experimental
definitions. Level and matrix data CAN be exported from beta versions and imported to this version. All
later versions are expected to preserve backward compatibility with version 1.1.
Plots of collision functions cannot be generated for all states.

===Description===

See version 1.0.

====Bug-fixes====

A bug that sometimes prevented correlated errors from being read from the Gosia output has been fixed.

===Recommendations===

To migrate from a beta version to version 1.1.1, export the level scheme and matrix, then import them into a
new session in this version.

==Version 1.1==

===Known bugs and issues===

In all versions, it is possible to save an empty session over an existing session. Frequent backups of the working directory should be made.

This version is not backward-compatible with the beta versions; users must re-define the experimental
definitions. Level and matrix data CAN be exported from beta versions and imported to this version. All
later versions are expected to preserve backward compatibility with version 1.1.
Plots of collision functions cannot be generated for all states.

The "fully-automatic" loading of yield data reports Ge detector numbers that are 1 larger than the correct number. This is misleading but does not cause any accuracy errors.

===Description===

See version 1.0

====Bug-fixes====

A bug in adding interband matrix elements is fixed. Version 1.0 did not include all allowed couplings.

===Recommendations===

To migrate from a beta version to version 1.1, export the level scheme and matrix, then import them into a
new session in this version.

==Version 1.0==

===Known bugs and issues===

In all versions, it is possible to save an empty session over an existing session. Frequent backups of the working directory should be made.

This version is not backward-compatible with the beta versions; users must re-define the experimental
definitions. Level and matrix data CAN be exported from beta versions and imported to this version. All
later versions are expected to preserve backward compatibility with version 1.0.
Plots of collision functions cannot be generated for all states.

The "fully-automatic" loading of yield data reports Ge detector numbers that are 1 larger than the correct number. This is misleading but does not cause any accuracy errors.

===Description===

Faster setup of calculations.

Defining complicated detector arrays can be done in one operation.

A library of detector types and arrays is included.

Loading of all experimental yield data can be done in one operation.

Simulations now use the standard definition of Ge efficiency.

Simulated yield tables are clearer.

Stopping power and exit energy are calculated by Elast automatically.

The Rochester SRIM server can be called for more accurate stopping power data.

Thick-target experiments are handled accurately, including backscatter detection from the surface.

The correction to the gamma angular distribution now includes the motion of the emitting nucleus.

Deorientation coefficients and lifetimes can be calulated in a few seconds.

====Bug-fixes====

Merging, deleting and reordering of bands are allowed at any time.

Any number of bands can be merged. (See restrictions regarding duplicate spin states and different-parity
states in one band.)

Malfunctions during plotting of yield data are fixed. The overall normalization for all data sets is now
used in plots comparing measured and predicted yields.

The reported chi-squared values are properly-weighted on plots and in reports. (Chi-squared and
normalization was done correctly in fits in all versions.)

It is no longer necessary to reload yield data after changing the level scheme, unless new states are
added.

===Recommendations===

To migrate from a beta version to version 1.0, export the level scheme and matrix, then import them into a
new session in this version.

=Beta Versions=

==Version 2.0.8.beta==

===Known bugs and issues===

The GUI allows only simple changes to the level scheme after the matrix and experiment have been defined (adding and deleting of bands). The release candidate (expected September 2011) has the ability to merge and reorder bands at any time.

If the level scheme is changed after calculated or experimental yield data are in memory, the user must reload the experimental data and generate new calculated yields. This has been fixed in the release candidate version (expected September 2011).

===Description===

This version uses a more accurate estimate of a typical Ge detector's ''intrinsic'' efficiency (based on Gammasphere's efficiency) to give approximate "raw" count rates. The total counts (for 100% efficienct detectors) were found to agree with perturbation calculations for weakly-coupled two-state systems, where the perturbation method is accurate.

Refer to the recommendations section if you are working with simulated yield data.

This version preserves the same backward compatibility with older session files as did version 2.0.6.beta.

This is expected to be the last beta release before a significantly upgraded release version expected in July.

===Recommendations===

If you are working with simulated data, refer to the page [[Rachel_simulated_yield_output | Rachel simulated yield output]] for a description of the new output format and the meaning of terms.

==Version 2.0.7.beta==

===Known bugs and issues===

None

===Description===

This is a bug-fix version relative to 2.0.6.beta.

# The simulated yield data are now updated properly.
# The simulated data now include the proper Ge detector solid angle factor. Simulated yield data are corrected by dividing the simulated raw counts by a factor of <math>\epsilon \Delta\Omega_\gamma</math>, where <math>\epsilon</math> is the approximate intrinsic efficiency (<math>0<\epsilon <1</math>) and <math>\Delta\Omega_\gamma</math> is the solid angle subtended by the Ge detector. In previous Rachel versions, the absence of the solid angle factor would cause a systematic disagreement between Ge detectors only if they subtended different solid angles.

Refer to the recommendations section if you are working with simulated yield data.

This version preserves the same backward compatibility with older session files as did version 2.0.6.beta.

This is expected to be the last beta release before a significantly upgraded release version expected in July.

===Recommendations===

If you are not working with simulated data, no corrections are needed.

ONLY if simulated data are in use, re-run the simulated data calculation. Answer "yes" to the prompt to re-integrate the yield data.

==Version 2.0.6.beta==

===Known bugs and issues===

When calculating simulated yields, the new simulated yield data in session (and saved session file) will not be updated unless the user answers "y" to the prompt "Re-integrate the predicted yields? [Y/n]:" This may or may not affect subsequent fits to the simulated data, depending on the changes to the matrix, experimental parameters, detector arrangements, etc. The new simulated data are written correctly to the terminal and to the gosia yield file, so fits would not be affected, but a large disagreement between simulated data and calculated yields could appear on plots. ''Remedy: always choose to re-integrated the yields when calculating simulated yield data.''

===Description===

This is a bug-fix version relative to 2.0.5.beta.

Refer to the notes for "Version 2.0.5.beta" below for the details of the bug fix and the recommended solution to update your session files.

This version preserves the same backward compatibility with older session files as did version 2.0.5.beta.

This is expected to be the last beta release before a significantly upgraded release version expected in July.

===Recommendations===

After replacing an older version of Rachel with this version, re-integrate the calculated yields in memory by selecting "Integrated yields" and "Run gosia input" and clicking "Go." This will update the calculated yields and overwrite any erroneous calculated yields that may be in memory from the bug.

==Version 2.0.5.beta==

===Known bugs and issues===

The bug in version 2.0.4.beta is still not completely fixed. See below. A new version will be released probably in mid-June 2011. Refer to this post in the Gosia forum to see how to correct for the bug:

[http://www-user.pas.rochester.edu/~gosia/phpBB3/viewtopic.php?f=9&t=9 Forum post on correcting for the bug]

===Description===

This is a bug-fix version relative to 2.0.4.beta, and some user prompts and output information is clarified.

The GUI now correctly informs you of the choices of kinematic solutions for inverse kinematics cases. The safe energy is reported before asking for the initial beam energy.

Refer to the notes for "Version 2.0.4.beta" below for the details of the bug fix and the recommended solution to update your session files.

This version preserves the same backward compatibility with older session files as did version 2.0.4.beta.

This is expected to be the last beta release before a significantly upgraded release version expected in July.

==Version 2.0.4.beta==

===Known bugs and issues===

This version has one known bug: if the user selects "View gosia input" or "Save gosia input" for some types of calculations, such as "Integrated yields," inaccurate point yields would be stored in memory after the operation. This could be more or less apparent, depending on how accurate the point-scattering approximation is for the experiments defined. The absolute cross sections then reported on plots could then be extremely inaccurate.

After running "Integrated yields" with "Run gosia input" selected, the calculated yields and absolute cross sections on plots would (again) be accurate.

This bug does not affect real yield data or simulated yield data. This bug would not affect fitting of matrix elements, since the ''corrected'' yields used by Gosia are stored in an external file only.

====Remedies====

# Upgrade to version 2.0.5.beta.
# Re-run the "Integrated yields" calculation to store accurately-calculated yields in memory. (Save the session.) This will update all calculated data in memory and on plots.

Gui release notes

2012-12-12T19:20:06Z

Gosia:

These versions are listed from newest to oldest.

=Versions 1.x=

==Version 1.3.1==

===Description===

New features: Thick-target calculations are now fully-automated. The user is prompted if the thick target requires extra consideration, whereas, in older versions, the user would get error messages and have to fix it herself.

===Changes===

* Auto-complete is added for filenames, so it is easier to load detector arrays, for example.
* Notices are displayed automatically when a new version of Rachel is available.
* The simulation table output contains all of the relevant data about each experiment.

====Bug-fixes====

Fixed a bug that prevented proper storage of calculated errors in the matrix elements. The output of the error calculation was correct, but those error bars could not be retrieved later.

This version properly flushes the input buffer (stdin) before prompts, so that accidental keystrokes are ignored.

===Known bugs and issues===

The plots of collision functions are still not available for all multipoles.

In all versions, it is possible to save an empty session over an existing session. Frequent backups of the working directory should be made.

This version is not backward-compatible with the beta versions; users must re-define the experimental
definitions. Level and matrix data CAN be exported from beta versions and imported to this version. All
later versions are expected to preserve backward compatibility with this version.
Plots of collision functions cannot be generated for all states.

===Recommendations===

==Version 1.3.0==

===Description===

New features: Thick-target calculations are now fully-automated. The user is prompted if the thick target requires extra consideration, whereas, in older versions, the user would get error messages and have to fix it herself.

===Changes===

* Thick target calculations are now fully-automated
* Lifetime calculations are now fully-automated (one-click)
* Vacuum deorientation calculations are now fully-automated and can be run at any time when the experimental setup is complete.
* Two logs have been added: a procedure log with timestamps and a user log that can be edited inside the GUI.
* Tab-completion of filenames and paths
* Improved reading of AGS level schemes that are missing spin/parity assignments
* The assumed Q-value is lowered automatically when the projectile energy is too low

====Bug-fixes====

Fixed a bug that used the wrong kinematic solution for inverse kinematics in some fits. This caused inaccuracy in finding the minimum in some cases.

Errors are more graceful if the user tries to perform an operation before setup is complete.

The splash screen now renders properly.

===Known bugs and issues===

In all versions, it is possible to save an empty session over an existing session. Frequent backups of the working directory should be made.

This version is not backward-compatible with the beta versions; users must re-define the experimental
definitions. Level and matrix data CAN be exported from beta versions and imported to this version. All
later versions are expected to preserve backward compatibility with version 1.2.0
Plots of collision functions cannot be generated for all states.

===Recommendations===

To migrate from a beta version to this version, export the level scheme and matrix, then import them into a
new session in this version.

==Version 1.2.0==

===Description===

===Changes===

The normalization of calculated yields to experimental yields in the GUI now matches the normalization used by Gosia. The previous Rachel versions weighted yields by their fractional errors when calculating the normalizations. This can make plotting and understanding the chi-squared values confusing. For example, when low-intensity gamma-ray yields are poorly reproduced, the high-intensity yields can appear to be poorly reproduced.

The new method in version 1.2.0 weights the individual yields' contributions to the normalization factor by their intensity only.

This version is backward-compatible with all versions 1.0 and later.

See version 1.0.

====Bug-fixes====

===Known bugs and issues===

In all versions, it is possible to save an empty session over an existing session. Frequent backups of the working directory should be made.

This version is not backward-compatible with the beta versions; users must re-define the experimental
definitions. Level and matrix data CAN be exported from beta versions and imported to this version. All
later versions are expected to preserve backward compatibility with this version.
Plots of collision functions cannot be generated for all states.

===Recommendations===

To migrate from a beta version to version 1.2.0, export the level scheme and matrix, then import them into a
new session in this version.

==Version 1.1.5==

===Description===

This version is backward-compatible with all versions 1.0 and later.

See version 1.0.

===Changes===

None

====Bug-fixes====

A bug that affected only the fitting and corrected yield calculations has been fixed. Occasionally, but not always, this bug resulted in incorrect yield data being passed to Gosia using the "Write Gosia yld file" button, which would affect fitting. It did not affect integrated yield calculations, simulations or plotting, and the integrated yield function still gave the correct chi-squared value.

See the recommendations section below.

===Known bugs and issues===

In all versions to date, the sensitivity map (OP,MAP) is calculated in the same Gosia call that does a fit (OP,MINI). This works in most cases, but it may cause errors occasionally in inverse-kinematics calculations. (This is not confirmed, but the error will be reported if it occurs.) The sensitivity map will be calculated in a separate call in the next bug-fix version.

Level schemes that do not have spins in order of increasing energy within a band, e.g. 1-, 0-, 3-, 2-..., will cause errors in generating the Gosia input, and the full yield data set may not be passed to Gosia for fitting matrix elements. The expected date for the bug fix is not known. In the meantime, separate each state to a separate band. (It may be sufficient to separate the ground state and put it in band #1, then put all remaining states in another band.) Be sure to check the K values that the GUI has assumed and normalization constants for the Alaga rule compared to the in-band rotor model.

In all versions, it is possible to save an empty session over an existing session. Frequent backups of the working directory should be made.

This version is not backward-compatible with the beta versions; users must re-define the experimental
definitions. Level and matrix data CAN be exported from beta versions and imported to this version. All
later versions are expected to preserve backward compatibility with this version.
Plots of collision functions cannot be generated for all states.

===Recommendations===

Refer to the bug-fix above. To correct possible errors in prior fits, do the following 'if a fit has been performed'.
No corrections are needed if a fit has not been performed with an earlier version.

# Rewrite the Gosia yield file using the button "Write Gosia yld file."
# Re-run the "Make corrected yields" calculation.
# Re-run the "Fit" calculation.
# Re-run any error calculations that have been done.
# Before comparing experimental yields to calculated yields (plotting, etc.), re-run "Integrated yields" to update the calculated yields for the new matrix elements.
# Save the session.

The new fitted matrix elements can be compared to previous calculations to see if the bug had affected fits.

To migrate from a beta version to this version, export the level scheme and matrix, then import them into a
new session in this version.

==Version 1.1.4==

===Description===

This version is backward-compatible with all versions 1.0 and later.

See version 1.0.

===Changes===

The user must now answer "y" or "n" when asked whether to save the session upon exiting. This helps to prevent accidentally overwriting the session file.

====Bug-fixes====

All yield data are properly displayed when plotting yields for merged bands.

Some previous versions did not parse comments properly in detector array files has been fixed. This bug had made it impossible to import a few of the array files that come with the Rachel package.

===Known bugs and issues===

In all versions, it is possible to save an empty session over an existing session. Frequent backups of the working directory should be made.

This version is not backward-compatible with the beta versions; users must re-define the experimental
definitions. Level and matrix data CAN be exported from beta versions and imported to this version. All
later versions are expected to preserve backward compatibility with version 1.1.4.
Plots of collision functions cannot be generated for all states.

===Recommendations===

To migrate from a beta version to version 1.1.4, export the level scheme and matrix, then import them into a
new session in this version.

==Version 1.1.3==

===Known bugs and issues===

''The following bug affects the plotting function, but does not affect the accuracy of calculations.''

In some cases, plots of gamma-ray yields will not show all of the data for merged bands. For example, if odd-spin states in band "b" are merged into the even spin states of band "a," a plot of the yield data for the merged band "a" may not show the yields from the states of the original band "b."

In all versions, it is possible to save an empty session over an existing session. Frequent backups of the working directory should be made.

This version is not backward-compatible with the beta versions; users must re-define the experimental
definitions. Level and matrix data CAN be exported from beta versions and imported to this version. All
later versions are expected to preserve backward compatibility with version 1.1.3.
Plots of collision functions cannot be generated for all states.

===Description===

See version 1.0.

====Bug-fixes====

It is now possible to add in-band matrix elements of any multipolarity that conserves parity, i.e., E2, E4, E6 and M1. There was no accuracy error associated with this bug.

===Recommendations===

To migrate from a beta version to version 1.1.3, export the level scheme and matrix, then import them into a
new session in this version.

==Version 1.1.2==

===Known bugs and issues===

In all versions, it is possible to save an empty session over an existing session. Frequent backups of the working directory should be made.

This version is not backward-compatible with the beta versions; users must re-define the experimental
definitions. Level and matrix data CAN be exported from beta versions and imported to this version. All
later versions are expected to preserve backward compatibility with version 1.1.2.
Plots of collision functions cannot be generated for all states.

===Description===

See version 1.0.

====Bug-fixes====

A bug that sometimes caused the deorientation coefficient calculation to fail has been fixed. Calculations were accurate in previous versions, but sometimes could not be read from the Gosia output.

===Recommendations===

To migrate from a beta version to version 1.1.2, export the level scheme and matrix, then import them into a
new session in this version.

==Version 1.1.1==

===Known bugs and issues===

In all versions, it is possible to save an empty session over an existing session. Frequent backups of the working directory should be made.

This version is not backward-compatible with the beta versions; users must re-define the experimental
definitions. Level and matrix data CAN be exported from beta versions and imported to this version. All
later versions are expected to preserve backward compatibility with version 1.1.
Plots of collision functions cannot be generated for all states.

===Description===

See version 1.0.

====Bug-fixes====

A bug that sometimes prevented correlated errors from being read from the Gosia output has been fixed.

===Recommendations===

To migrate from a beta version to version 1.1.1, export the level scheme and matrix, then import them into a
new session in this version.

==Version 1.1==

===Known bugs and issues===

In all versions, it is possible to save an empty session over an existing session. Frequent backups of the working directory should be made.

This version is not backward-compatible with the beta versions; users must re-define the experimental
definitions. Level and matrix data CAN be exported from beta versions and imported to this version. All
later versions are expected to preserve backward compatibility with version 1.1.
Plots of collision functions cannot be generated for all states.

The "fully-automatic" loading of yield data reports Ge detector numbers that are 1 larger than the correct number. This is misleading but does not cause any accuracy errors.

===Description===

See version 1.0

====Bug-fixes====

A bug in adding interband matrix elements is fixed. Version 1.0 did not include all allowed couplings.

===Recommendations===

To migrate from a beta version to version 1.1, export the level scheme and matrix, then import them into a
new session in this version.

==Version 1.0==

===Known bugs and issues===

In all versions, it is possible to save an empty session over an existing session. Frequent backups of the working directory should be made.

This version is not backward-compatible with the beta versions; users must re-define the experimental
definitions. Level and matrix data CAN be exported from beta versions and imported to this version. All
later versions are expected to preserve backward compatibility with version 1.0.
Plots of collision functions cannot be generated for all states.

The "fully-automatic" loading of yield data reports Ge detector numbers that are 1 larger than the correct number. This is misleading but does not cause any accuracy errors.

===Description===

Faster setup of calculations.

Defining complicated detector arrays can be done in one operation.

A library of detector types and arrays is included.

Loading of all experimental yield data can be done in one operation.

Simulations now use the standard definition of Ge efficiency.

Simulated yield tables are clearer.

Stopping power and exit energy are calculated by Elast automatically.

The Rochester SRIM server can be called for more accurate stopping power data.

Thick-target experiments are handled accurately, including backscatter detection from the surface.

The correction to the gamma angular distribution now includes the motion of the emitting nucleus.

Deorientation coefficients and lifetimes can be calulated in a few seconds.

====Bug-fixes====

Merging, deleting and reordering of bands are allowed at any time.

Any number of bands can be merged. (See restrictions regarding duplicate spin states and different-parity
states in one band.)

Malfunctions during plotting of yield data are fixed. The overall normalization for all data sets is now
used in plots comparing measured and predicted yields.

The reported chi-squared values are properly-weighted on plots and in reports. (Chi-squared and
normalization was done correctly in fits in all versions.)

It is no longer necessary to reload yield data after changing the level scheme, unless new states are
added.

===Recommendations===

To migrate from a beta version to version 1.0, export the level scheme and matrix, then import them into a
new session in this version.

=Beta Versions=

==Version 2.0.8.beta==

===Known bugs and issues===

The GUI allows only simple changes to the level scheme after the matrix and experiment have been defined (adding and deleting of bands). The release candidate (expected September 2011) has the ability to merge and reorder bands at any time.

If the level scheme is changed after calculated or experimental yield data are in memory, the user must reload the experimental data and generate new calculated yields. This has been fixed in the release candidate version (expected September 2011).

===Description===

This version uses a more accurate estimate of a typical Ge detector's ''intrinsic'' efficiency (based on Gammasphere's efficiency) to give approximate "raw" count rates. The total counts (for 100% efficienct detectors) were found to agree with perturbation calculations for weakly-coupled two-state systems, where the perturbation method is accurate.

Refer to the recommendations section if you are working with simulated yield data.

This version preserves the same backward compatibility with older session files as did version 2.0.6.beta.

This is expected to be the last beta release before a significantly upgraded release version expected in July.

===Recommendations===

If you are working with simulated data, refer to the page [[Rachel_simulated_yield_output | Rachel simulated yield output]] for a description of the new output format and the meaning of terms.

==Version 2.0.7.beta==

===Known bugs and issues===

None

===Description===

This is a bug-fix version relative to 2.0.6.beta.

# The simulated yield data are now updated properly.
# The simulated data now include the proper Ge detector solid angle factor. Simulated yield data are corrected by dividing the simulated raw counts by a factor of <math>\epsilon \Delta\Omega_\gamma</math>, where <math>\epsilon</math> is the approximate intrinsic efficiency (<math>0<\epsilon <1</math>) and <math>\Delta\Omega_\gamma</math> is the solid angle subtended by the Ge detector. In previous Rachel versions, the absence of the solid angle factor would cause a systematic disagreement between Ge detectors only if they subtended different solid angles.

Refer to the recommendations section if you are working with simulated yield data.

This version preserves the same backward compatibility with older session files as did version 2.0.6.beta.

This is expected to be the last beta release before a significantly upgraded release version expected in July.

===Recommendations===

If you are not working with simulated data, no corrections are needed.

ONLY if simulated data are in use, re-run the simulated data calculation. Answer "yes" to the prompt to re-integrate the yield data.

==Version 2.0.6.beta==

===Known bugs and issues===

When calculating simulated yields, the new simulated yield data in session (and saved session file) will not be updated unless the user answers "y" to the prompt "Re-integrate the predicted yields? [Y/n]:" This may or may not affect subsequent fits to the simulated data, depending on the changes to the matrix, experimental parameters, detector arrangements, etc. The new simulated data are written correctly to the terminal and to the gosia yield file, so fits would not be affected, but a large disagreement between simulated data and calculated yields could appear on plots. ''Remedy: always choose to re-integrated the yields when calculating simulated yield data.''

===Description===

This is a bug-fix version relative to 2.0.5.beta.

Refer to the notes for "Version 2.0.5.beta" below for the details of the bug fix and the recommended solution to update your session files.

This version preserves the same backward compatibility with older session files as did version 2.0.5.beta.

This is expected to be the last beta release before a significantly upgraded release version expected in July.

===Recommendations===

After replacing an older version of Rachel with this version, re-integrate the calculated yields in memory by selecting "Integrated yields" and "Run gosia input" and clicking "Go." This will update the calculated yields and overwrite any erroneous calculated yields that may be in memory from the bug.

==Version 2.0.5.beta==

===Known bugs and issues===

The bug in version 2.0.4.beta is still not completely fixed. See below. A new version will be released probably in mid-June 2011. Refer to this post in the Gosia forum to see how to correct for the bug:

[http://www-user.pas.rochester.edu/~gosia/phpBB3/viewtopic.php?f=9&t=9 Forum post on correcting for the bug]

===Description===

This is a bug-fix version relative to 2.0.4.beta, and some user prompts and output information is clarified.

The GUI now correctly informs you of the choices of kinematic solutions for inverse kinematics cases. The safe energy is reported before asking for the initial beam energy.

Refer to the notes for "Version 2.0.4.beta" below for the details of the bug fix and the recommended solution to update your session files.

This version preserves the same backward compatibility with older session files as did version 2.0.4.beta.

This is expected to be the last beta release before a significantly upgraded release version expected in July.

==Version 2.0.4.beta==

===Known bugs and issues===

This version has one known bug: if the user selects "View gosia input" or "Save gosia input" for some types of calculations, such as "Integrated yields," inaccurate point yields would be stored in memory after the operation. This could be more or less apparent, depending on how accurate the point-scattering approximation is for the experiments defined. The absolute cross sections then reported on plots could then be extremely inaccurate.

After running "Integrated yields" with "Run gosia input" selected, the calculated yields and absolute cross sections on plots would (again) be accurate.

This bug does not affect real yield data or simulated yield data. This bug would not affect fitting of matrix elements, since the ''corrected'' yields used by Gosia are stored in an external file only.

====Remedies====

# Upgrade to version 2.0.5.beta.
# Re-run the "Integrated yields" calculation to store accurately-calculated yields in memory. (Save the session.) This will update all calculated data in memory and on plots.

Gui release notes

2012-12-12T18:21:30Z

Gosia: added 1.3.1

These versions are listed from newest to oldest.

=Versions 1.x=

==Version 1.3.1==

===Description===

New features: Thick-target calculations are now fully-automated. The user is prompted if the thick target requires extra consideration, whereas, in older versions, the user would get error messages and have to fix it herself.

===Changes===

* Auto-complete is added for filenames, so it is easier to load detector arrays, for example.
* Notices are displayed automatically when a new version of Rachel is available.
* The simulation table output contains all of the relevant data about each experiment.

====Bug-fixes====

Fixed a bug that prevented proper storage of calculated errors in the matrix elements. The output of the error calculation was correct, but those error bars could not be retrieved later.

===Known bugs and issues===

The plots of collision functions are still not available for all multipoles.

In all versions, it is possible to save an empty session over an existing session. Frequent backups of the working directory should be made.

This version is not backward-compatible with the beta versions; users must re-define the experimental
definitions. Level and matrix data CAN be exported from beta versions and imported to this version. All
later versions are expected to preserve backward compatibility with this version.
Plots of collision functions cannot be generated for all states.

===Recommendations===

==Version 1.3.0==

===Description===

New features: Thick-target calculations are now fully-automated. The user is prompted if the thick target requires extra consideration, whereas, in older versions, the user would get error messages and have to fix it herself.

===Changes===

* Thick target calculations are now fully-automated
* Lifetime calculations are now fully-automated (one-click)
* Vacuum deorientation calculations are now fully-automated and can be run at any time when the experimental setup is complete.
* Two logs have been added: a procedure log with timestamps and a user log that can be edited inside the GUI.
* Tab-completion of filenames and paths
* Improved reading of AGS level schemes that are missing spin/parity assignments
* The assumed Q-value is lowered automatically when the projectile energy is too low

====Bug-fixes====

Fixed a bug that used the wrong kinematic solution for inverse kinematics in some fits. This caused inaccuracy in finding the minimum in some cases.

Errors are more graceful if the user tries to perform an operation before setup is complete.

The splash screen now renders properly.

===Known bugs and issues===

In all versions, it is possible to save an empty session over an existing session. Frequent backups of the working directory should be made.

This version is not backward-compatible with the beta versions; users must re-define the experimental
definitions. Level and matrix data CAN be exported from beta versions and imported to this version. All
later versions are expected to preserve backward compatibility with version 1.2.0
Plots of collision functions cannot be generated for all states.

===Recommendations===

To migrate from a beta version to this version, export the level scheme and matrix, then import them into a
new session in this version.

==Version 1.2.0==

===Description===

===Changes===

The normalization of calculated yields to experimental yields in the GUI now matches the normalization used by Gosia. The previous Rachel versions weighted yields by their fractional errors when calculating the normalizations. This can make plotting and understanding the chi-squared values confusing. For example, when low-intensity gamma-ray yields are poorly reproduced, the high-intensity yields can appear to be poorly reproduced.

The new method in version 1.2.0 weights the individual yields' contributions to the normalization factor by their intensity only.

This version is backward-compatible with all versions 1.0 and later.

See version 1.0.

====Bug-fixes====

===Known bugs and issues===

In all versions, it is possible to save an empty session over an existing session. Frequent backups of the working directory should be made.

This version is not backward-compatible with the beta versions; users must re-define the experimental
definitions. Level and matrix data CAN be exported from beta versions and imported to this version. All
later versions are expected to preserve backward compatibility with this version.
Plots of collision functions cannot be generated for all states.

===Recommendations===

To migrate from a beta version to version 1.2.0, export the level scheme and matrix, then import them into a
new session in this version.

==Version 1.1.5==

===Description===

This version is backward-compatible with all versions 1.0 and later.

See version 1.0.

===Changes===

None

====Bug-fixes====

A bug that affected only the fitting and corrected yield calculations has been fixed. Occasionally, but not always, this bug resulted in incorrect yield data being passed to Gosia using the "Write Gosia yld file" button, which would affect fitting. It did not affect integrated yield calculations, simulations or plotting, and the integrated yield function still gave the correct chi-squared value.

See the recommendations section below.

===Known bugs and issues===

In all versions to date, the sensitivity map (OP,MAP) is calculated in the same Gosia call that does a fit (OP,MINI). This works in most cases, but it may cause errors occasionally in inverse-kinematics calculations. (This is not confirmed, but the error will be reported if it occurs.) The sensitivity map will be calculated in a separate call in the next bug-fix version.

Level schemes that do not have spins in order of increasing energy within a band, e.g. 1-, 0-, 3-, 2-..., will cause errors in generating the Gosia input, and the full yield data set may not be passed to Gosia for fitting matrix elements. The expected date for the bug fix is not known. In the meantime, separate each state to a separate band. (It may be sufficient to separate the ground state and put it in band #1, then put all remaining states in another band.) Be sure to check the K values that the GUI has assumed and normalization constants for the Alaga rule compared to the in-band rotor model.

In all versions, it is possible to save an empty session over an existing session. Frequent backups of the working directory should be made.

This version is not backward-compatible with the beta versions; users must re-define the experimental
definitions. Level and matrix data CAN be exported from beta versions and imported to this version. All
later versions are expected to preserve backward compatibility with this version.
Plots of collision functions cannot be generated for all states.

===Recommendations===

Refer to the bug-fix above. To correct possible errors in prior fits, do the following 'if a fit has been performed'.
No corrections are needed if a fit has not been performed with an earlier version.

# Rewrite the Gosia yield file using the button "Write Gosia yld file."
# Re-run the "Make corrected yields" calculation.
# Re-run the "Fit" calculation.
# Re-run any error calculations that have been done.
# Before comparing experimental yields to calculated yields (plotting, etc.), re-run "Integrated yields" to update the calculated yields for the new matrix elements.
# Save the session.

The new fitted matrix elements can be compared to previous calculations to see if the bug had affected fits.

To migrate from a beta version to this version, export the level scheme and matrix, then import them into a
new session in this version.

==Version 1.1.4==

===Description===

This version is backward-compatible with all versions 1.0 and later.

See version 1.0.

===Changes===

The user must now answer "y" or "n" when asked whether to save the session upon exiting. This helps to prevent accidentally overwriting the session file.

====Bug-fixes====

All yield data are properly displayed when plotting yields for merged bands.

Some previous versions did not parse comments properly in detector array files has been fixed. This bug had made it impossible to import a few of the array files that come with the Rachel package.

===Known bugs and issues===

In all versions, it is possible to save an empty session over an existing session. Frequent backups of the working directory should be made.

This version is not backward-compatible with the beta versions; users must re-define the experimental
definitions. Level and matrix data CAN be exported from beta versions and imported to this version. All
later versions are expected to preserve backward compatibility with version 1.1.4.
Plots of collision functions cannot be generated for all states.

===Recommendations===

To migrate from a beta version to version 1.1.4, export the level scheme and matrix, then import them into a
new session in this version.

==Version 1.1.3==

===Known bugs and issues===

''The following bug affects the plotting function, but does not affect the accuracy of calculations.''

In some cases, plots of gamma-ray yields will not show all of the data for merged bands. For example, if odd-spin states in band "b" are merged into the even spin states of band "a," a plot of the yield data for the merged band "a" may not show the yields from the states of the original band "b."

In all versions, it is possible to save an empty session over an existing session. Frequent backups of the working directory should be made.

This version is not backward-compatible with the beta versions; users must re-define the experimental
definitions. Level and matrix data CAN be exported from beta versions and imported to this version. All
later versions are expected to preserve backward compatibility with version 1.1.3.
Plots of collision functions cannot be generated for all states.

===Description===

See version 1.0.

====Bug-fixes====

It is now possible to add in-band matrix elements of any multipolarity that conserves parity, i.e., E2, E4, E6 and M1. There was no accuracy error associated with this bug.

===Recommendations===

To migrate from a beta version to version 1.1.3, export the level scheme and matrix, then import them into a
new session in this version.

==Version 1.1.2==

===Known bugs and issues===

In all versions, it is possible to save an empty session over an existing session. Frequent backups of the working directory should be made.

This version is not backward-compatible with the beta versions; users must re-define the experimental
definitions. Level and matrix data CAN be exported from beta versions and imported to this version. All
later versions are expected to preserve backward compatibility with version 1.1.2.
Plots of collision functions cannot be generated for all states.

===Description===

See version 1.0.

====Bug-fixes====

A bug that sometimes caused the deorientation coefficient calculation to fail has been fixed. Calculations were accurate in previous versions, but sometimes could not be read from the Gosia output.

===Recommendations===

To migrate from a beta version to version 1.1.2, export the level scheme and matrix, then import them into a
new session in this version.

==Version 1.1.1==

===Known bugs and issues===

In all versions, it is possible to save an empty session over an existing session. Frequent backups of the working directory should be made.

This version is not backward-compatible with the beta versions; users must re-define the experimental
definitions. Level and matrix data CAN be exported from beta versions and imported to this version. All
later versions are expected to preserve backward compatibility with version 1.1.
Plots of collision functions cannot be generated for all states.

===Description===

See version 1.0.

====Bug-fixes====

A bug that sometimes prevented correlated errors from being read from the Gosia output has been fixed.

===Recommendations===

To migrate from a beta version to version 1.1.1, export the level scheme and matrix, then import them into a
new session in this version.

==Version 1.1==

===Known bugs and issues===

In all versions, it is possible to save an empty session over an existing session. Frequent backups of the working directory should be made.

This version is not backward-compatible with the beta versions; users must re-define the experimental
definitions. Level and matrix data CAN be exported from beta versions and imported to this version. All
later versions are expected to preserve backward compatibility with version 1.1.
Plots of collision functions cannot be generated for all states.

The "fully-automatic" loading of yield data reports Ge detector numbers that are 1 larger than the correct number. This is misleading but does not cause any accuracy errors.

===Description===

See version 1.0

====Bug-fixes====

A bug in adding interband matrix elements is fixed. Version 1.0 did not include all allowed couplings.

===Recommendations===

To migrate from a beta version to version 1.1, export the level scheme and matrix, then import them into a
new session in this version.

==Version 1.0==

===Known bugs and issues===

In all versions, it is possible to save an empty session over an existing session. Frequent backups of the working directory should be made.

This version is not backward-compatible with the beta versions; users must re-define the experimental
definitions. Level and matrix data CAN be exported from beta versions and imported to this version. All
later versions are expected to preserve backward compatibility with version 1.0.
Plots of collision functions cannot be generated for all states.

The "fully-automatic" loading of yield data reports Ge detector numbers that are 1 larger than the correct number. This is misleading but does not cause any accuracy errors.

===Description===

Faster setup of calculations.

Defining complicated detector arrays can be done in one operation.

A library of detector types and arrays is included.

Loading of all experimental yield data can be done in one operation.

Simulations now use the standard definition of Ge efficiency.

Simulated yield tables are clearer.

Stopping power and exit energy are calculated by Elast automatically.

The Rochester SRIM server can be called for more accurate stopping power data.

Thick-target experiments are handled accurately, including backscatter detection from the surface.

The correction to the gamma angular distribution now includes the motion of the emitting nucleus.

Deorientation coefficients and lifetimes can be calulated in a few seconds.

====Bug-fixes====

Merging, deleting and reordering of bands are allowed at any time.

Any number of bands can be merged. (See restrictions regarding duplicate spin states and different-parity
states in one band.)

Malfunctions during plotting of yield data are fixed. The overall normalization for all data sets is now
used in plots comparing measured and predicted yields.

The reported chi-squared values are properly-weighted on plots and in reports. (Chi-squared and
normalization was done correctly in fits in all versions.)

It is no longer necessary to reload yield data after changing the level scheme, unless new states are
added.

===Recommendations===

To migrate from a beta version to version 1.0, export the level scheme and matrix, then import them into a
new session in this version.

=Beta Versions=

==Version 2.0.8.beta==

===Known bugs and issues===

The GUI allows only simple changes to the level scheme after the matrix and experiment have been defined (adding and deleting of bands). The release candidate (expected September 2011) has the ability to merge and reorder bands at any time.

If the level scheme is changed after calculated or experimental yield data are in memory, the user must reload the experimental data and generate new calculated yields. This has been fixed in the release candidate version (expected September 2011).

===Description===

This version uses a more accurate estimate of a typical Ge detector's ''intrinsic'' efficiency (based on Gammasphere's efficiency) to give approximate "raw" count rates. The total counts (for 100% efficienct detectors) were found to agree with perturbation calculations for weakly-coupled two-state systems, where the perturbation method is accurate.

Refer to the recommendations section if you are working with simulated yield data.

This version preserves the same backward compatibility with older session files as did version 2.0.6.beta.

This is expected to be the last beta release before a significantly upgraded release version expected in July.

===Recommendations===

If you are working with simulated data, refer to the page [[Rachel_simulated_yield_output | Rachel simulated yield output]] for a description of the new output format and the meaning of terms.

==Version 2.0.7.beta==

===Known bugs and issues===

None

===Description===

This is a bug-fix version relative to 2.0.6.beta.

# The simulated yield data are now updated properly.
# The simulated data now include the proper Ge detector solid angle factor. Simulated yield data are corrected by dividing the simulated raw counts by a factor of <math>\epsilon \Delta\Omega_\gamma</math>, where <math>\epsilon</math> is the approximate intrinsic efficiency (<math>0<\epsilon <1</math>) and <math>\Delta\Omega_\gamma</math> is the solid angle subtended by the Ge detector. In previous Rachel versions, the absence of the solid angle factor would cause a systematic disagreement between Ge detectors only if they subtended different solid angles.

Refer to the recommendations section if you are working with simulated yield data.

This version preserves the same backward compatibility with older session files as did version 2.0.6.beta.

This is expected to be the last beta release before a significantly upgraded release version expected in July.

===Recommendations===

If you are not working with simulated data, no corrections are needed.

ONLY if simulated data are in use, re-run the simulated data calculation. Answer "yes" to the prompt to re-integrate the yield data.

==Version 2.0.6.beta==

===Known bugs and issues===

When calculating simulated yields, the new simulated yield data in session (and saved session file) will not be updated unless the user answers "y" to the prompt "Re-integrate the predicted yields? [Y/n]:" This may or may not affect subsequent fits to the simulated data, depending on the changes to the matrix, experimental parameters, detector arrangements, etc. The new simulated data are written correctly to the terminal and to the gosia yield file, so fits would not be affected, but a large disagreement between simulated data and calculated yields could appear on plots. ''Remedy: always choose to re-integrated the yields when calculating simulated yield data.''

===Description===

This is a bug-fix version relative to 2.0.5.beta.

Refer to the notes for "Version 2.0.5.beta" below for the details of the bug fix and the recommended solution to update your session files.

This version preserves the same backward compatibility with older session files as did version 2.0.5.beta.

This is expected to be the last beta release before a significantly upgraded release version expected in July.

===Recommendations===

After replacing an older version of Rachel with this version, re-integrate the calculated yields in memory by selecting "Integrated yields" and "Run gosia input" and clicking "Go." This will update the calculated yields and overwrite any erroneous calculated yields that may be in memory from the bug.

==Version 2.0.5.beta==

===Known bugs and issues===

The bug in version 2.0.4.beta is still not completely fixed. See below. A new version will be released probably in mid-June 2011. Refer to this post in the Gosia forum to see how to correct for the bug:

[http://www-user.pas.rochester.edu/~gosia/phpBB3/viewtopic.php?f=9&t=9 Forum post on correcting for the bug]

===Description===

This is a bug-fix version relative to 2.0.4.beta, and some user prompts and output information is clarified.

The GUI now correctly informs you of the choices of kinematic solutions for inverse kinematics cases. The safe energy is reported before asking for the initial beam energy.

Refer to the notes for "Version 2.0.4.beta" below for the details of the bug fix and the recommended solution to update your session files.

This version preserves the same backward compatibility with older session files as did version 2.0.4.beta.

This is expected to be the last beta release before a significantly upgraded release version expected in July.

==Version 2.0.4.beta==

===Known bugs and issues===

This version has one known bug: if the user selects "View gosia input" or "Save gosia input" for some types of calculations, such as "Integrated yields," inaccurate point yields would be stored in memory after the operation. This could be more or less apparent, depending on how accurate the point-scattering approximation is for the experiments defined. The absolute cross sections then reported on plots could then be extremely inaccurate.

After running "Integrated yields" with "Run gosia input" selected, the calculated yields and absolute cross sections on plots would (again) be accurate.

This bug does not affect real yield data or simulated yield data. This bug would not affect fitting of matrix elements, since the ''corrected'' yields used by Gosia are stored in an external file only.

====Remedies====

# Upgrade to version 2.0.5.beta.
# Re-run the "Integrated yields" calculation to store accurately-calculated yields in memory. (Save the session.) This will update all calculated data in memory and on plots.

Rachel GUI

2012-11-12T19:03:00Z

Gosia:

==General description==

[[File:Guisnapshot.png|thumb|right|A snapshot of the alpha version GUI.]]

For a very short video demo of capabilities, refer to the "advertising video": [http://www.pas.rochester.edu/~hayes/beta_rachel/main_ad.html The Rachel advertising video]

The Rachel interface facilitates [http://www.pas.rochester.edu/~hayes/beta_rachel/calculation_in_2_minutes.html fast setup of Gosia calculations] and data analysis using push-button controls with guided input and 'plain language' warnings during setup. Rachel is written in Python 2.6 and is expected to be Python 2.7 compliant. It runs under Linux and Unix (OS X) machines. A Windows version is not planned.

A 64-bit processor is essential, because Gosia runs fastest and most accurately on 64-bit machines. Versions 1.* have many structural changes in the code, allowing more automation, more general particle detector options and fewer user prompts for standard operations.

[[File:Typicalgosiainput.png|thumb|right|Excerpt of a typical Gosia input for a collective system.]]While gosia.20081208 incorporates the [[OP,BRIC]] command to read internal conversion data from BrIcc data files, removing the burden of entering ICC interpolation data by the user, the GUI allows the greatest possible automation by prompts for pre-defined or user-defined germanium detector crystals or arrays, calculation of Zeigler stopping power data, optimum meshpoint selection for yield calculations, transformation of rectilinear detector definition to laboratory-frame spherical-polar interpolation coordinates, etc. For standard problems, the burden on the user is reduced to entering nuclear level and matrix data for simulations (including optional data-set simulation) and real experimental data for fitting of matrix elements. For collective systems, where the matrix definition often includes several hundred lines of matrix elements, rotor parameters can be given to reduce the setup time for the initial guesses of matrix element values. This also eliminates the need for the user to re-index the reduced matrix elements by hand as changes are made to the matrix or level scheme.

==How to get the Rachel package==

Get the latest release version from the [http://www-user.pas.rochester.edu/~gosia/mediawiki/ Main Page].

==Version notes==

The [[Gui_release_notes | version notes page]] gives a history of Rachel updates. Known issues are given for each version, as well as the current version.

==Installation notes==

===General===

A script was added by Mitch Allmond that compiles and sets up Rachel, Gosia and Elast in one step. First, un-tar the distribution:

<pre>
% tar -xvf rachel_distribution_1.3.0.tar
</pre>

or similar for the correct version number. Move into the new Rachel directory and run compile-all.sh:

<pre>
% cd rachel_distribution_1.3.0
% ./compile-all.sh
</pre>

You will be prompted if any previous setup information needs to be overwritten.

Rachel has been installed successfully on a number of Linux and OS X systems. Most problems are related to the level scheme graphics. Refer to [http://matplotlib.sourceforge.net/faq/installing_faq.html#backends matplotlib backends] for remedies. You can view or submit detailed installation notes for any particular operating system. (Please link them to a separate Wiki page.)

If the default python environment set in the rachel.py executable is not appropriate, the following error will appear:

<pre>
% [path].rachel.py
/usr/bin/env: python2.6: No such file or directory
%
</pre>

The correct Python environment can be invoked by typing instead:

<pre>
% [python] [path].rachel.py
</pre>

where [python] is the Python executable with the correct path and [path] is the path to the rachel.py executable where the user installed it.

===Installation notes for other Linux/Unix systems===

* [[rachel_installation_ubuntu | Ubuntu]]
* [[rachel_installation_open_suse | OpenSuse]]
* [[rachel_installation_fedora | Fedora]]
* [[rachel_installation_mac_os_x | Mac OS X]]

The final tests that all necessary libraries and codes are installed are usually the following:

* Load a level scheme and see that the level scheme window is drawn properly. Rarely, after loading a level scheme with no errors (e.g. using one of the example files included in the Rachel distribution), the user must click "Examine fig. window" once to create the level scheme window. On most systems, with the correct libraries installed, the level scheme display pops up when a valid level scheme is loaded with no errors. If the GUI starts and can load and draw the level diagram without errors, then it is unlikely that there are any missing libraries. Also note that on some systems the matplotlib back-end must be changed. This is done by editing the <tt>~/.matplotlib/matplotlibrc</tt> file so that the back-end line reads

<pre>
backend : [backend]
</pre>

where <tt>[backend]</tt> may be one of several back-ends described here: [http://matplotlib.sourceforge.net/faq/installing_faq.html#backends matplotlib backends]. Usually <tt>TkAgg</tt> works except on Mac OS X. Refer to [[rachel_installation_mac_os_x | Mac OS X]].

* After running a calculation ("integration"), test the yield-plotting feature using the "Plot yields" button. If there is an error finding gnuplot, install gnuplot on the system so that it is in the user's path, i.e., that it can be invoked by typing "gnuplot" at the terminal prompt.

==GUI version backward compatibility==

In the beta versions, the GUI preserves backward-compatibility of the saved session files, so that users can upgrade the GUI without having to rebuild the session.

When changing to version 1.0 or later, users will have to rebuild their sessions, because of major changes in the internal structure that cannot be automatically upgraded. This can be aided by the export/import tools for the level and matrix data. Subsequent versions will have the automatic upgrading reinstated.

==Graphics Issues==

If you do not see a level scheme diagram after loading a level scheme or a saved session, click "Examine fig. window" once. The level scheme should then appear.

If it does not, or if the level scheme window buttons (zoom, pan, etc.) do not work, you may need to change the graphics back-end. The matplotlib graphics library used for the level scheme and particle detector layout comes with several choices of back-ends.

*On OS X machines, "macosx" may work best.
*On Ubuntu, GTKAgg works best, but the user must click "Examine fig. window" 'once' after loading a level scheme or saved session.

The back-end is in the matplotlibrc file in the .matplotlib directory, or will be, after you start Rachel for the first time.

<pre>
hayes@Sobchak:~$ cd .matplotlib/
hayes@Sobchak:~/.matplotlib$ ll
total 116K
drwxr-xr-x 3 hayes hayes 4.0K Nov 5 12:30 ./
drwxr-xr-x 125 hayes hayes 12K Nov 5 12:53 ../
-rw-r--r-- 1 hayes hayes 92K Oct 27 13:13 fontList.cache
-rw-r--r-- 1 hayes hayes 17 Aug 19 02:09 matplotlibrc
drwxrwxr-x 2 hayes hayes 4.0K Oct 27 13:13 tex.cache/
hayes@Sobchak:~/.matplotlib$ cat matplotlibrc
backend : GTKAgg
hayes@Sobchak:~/.matplotlib$
</pre>

Change the backend line as desired. The choices are found

==Capabilities of version 1==

Note that there are major simplifications in the Ge detector array setup and data loading.

* Human-readable data files that are robust for changes in the experimental setup and level scheme
* Azimuthally symmetric particle detection
* Partitioning particle-detector data by azimuthal angle
* Graphical definition of rectilinear or irregular-shaped particle detectors [[File:rectilineardetectorexample.png|thumb|right|A user-defined rectilinear detector automatically transformed into the laboratory spherical polar coordinates for Gosia. Black edge is the "exact" shape; red lines are the azimuthal range samples passed to Gosia.]]
* 4pi experiments (e.g. experiments with no particle detection)
* Normal or inverse kinematics experiments
* A user-expandable library of standard Ge crystals e.g. Gammasphere
* A user-expandable library of detector arrays (Tigress, Miniball, Gammasphere...)
* Data from summed 4pi arrays
* Efficiency-corrected gamma-ray data only
* Experiment planning aids
** Generation of simulated data based on a proposed beam run
** Optional quasi-Gaussian random scatter in simulated data
** Estimated precision of the proposed measurement
* Accuracy testing to determine if Gosia will be appropriate for a planned experiment
* Fitting and correlated error estimations
* Reading level schemes and gamma-ray data from Radware AGS files and [[Rachel_yield_data_files | Rachel text format]] including
** Branching ratio data
** Previously measured EM matrix elements, including the measured phases
** Lifetime data for ''excited states'' (not the ground state lifetime)
** Mixing ratios
* Several supported data file formats
** [Radware] AGS format
** [[Rachel format nuclear data files]]
** Gosia format (experimental yield and fitted matrix element data)
* Instantly generating plots of experimental vs. predicted yields via gnuplot [[File:plottingexample.png|thumb|right|A zoomed view of a plot of yield vs. spin in a rotational band generated from the Gosia output and experimental data.]]
* Automated generation of stopping power and internal conversion input for Gosia
* Push-button controls, optional pop-up guidance and guided prompts
* A searchable help function
* Undo/Redo of most functions and crash recovery

Using Rachel, the user will be able to build a level scheme from either a hand-written text file and/or a Radware AGS file, define the experimental setup and import relative-efficiency-corrected gamma-ray data from Rachel-format text and/or AGS files. The matrix and fit parameters can be defined by push-buttons and prompts or imported from a Rachel-format matrix file. Gosia will then be run by push-button GUI controls. Most prompts will be preceded by help information, suggestions, or warnings.

For experiments that fit the capabilities above, the user can view the Gosia inputs to learn the format, but will not be required to type any input code. Experienced Gosia users can export a GUI-generated input skeleton file and abandon the GUI to use the more advanced capabilities of Gosia.

==Upgrade strategy==

Upgrades are being made to incorporate all of the capabilities of Gosia, with a focus on the most commonly used features. Prioritization of the upgrades eventually will be directed primarily by [[software upgrade voting|votes]] cast by the user community. Users are encouraged to submit requested upgrades to handle present features of Gosia that are not already included, ''as well as new functions that Gosia does not handle, but which could be incorporated via the GUI.''

This voting plan has not been implemented yet. Users are encouraged to suggest desired upgrades through the Forum or the [[rachel_desired_upgrades | desired upgrades]] page to steer the software development.

===Planned upgrades===

There are a number of planned upgrades, many of which have already been added to versions 1.0 and later. The upgrade plan and priorities will be changed based on user feedback and bug reports.

# More accurate stopping power calculations for low-Z beams.
# Improved graphics including
## a transition from matplotlib graphics to pyGtk in the level scheme window
## clickable objects in the level scheme diagram
# Addition of Ge clusters with libraries of array geometries (Gammasphere, Agata, Miniball etc.)
# Plot functions to visualize fit conflicts in the data
# Improved object structure for Ge detectors. This will reduce the burden on the user by automatically updating the data set passed to Gosia as the level scheme and matrix change.
# Optional setting of symbolic matrix definitions, whereas now the matrix is stored numerically. This will allow greater user control by allowing tuning of model parameters, e.g. <gam|E2|gsb> = M1 + a*M2, where 'a' can be adjusted by the user.
# Optional simple distributed processing of some functions. This will allow the user to set a maximum number of independent processes to speed up separable calculations (integrated yields, corrected yields and experiment simulations) by issuing a separate call to Gosia for each process<ref>True distributed computing is not handled by the current version of Gosia</ref>.

==Videos, manual and run-time help==

===Quick advertising and demos===

[http://www.pas.rochester.edu/~hayes/beta_rachel/main_ad.html The Rachel advertising video]

[http://www.pas.rochester.edu/~hayes/beta_rachel/calculation_in_2_minutes.html Fast setup of Gosia calculations]

===Help with Rachel on this Wiki===

Use the search function to the left, or start here.

[[rachel_selected_topics | Selected help topics for Rachel]]

===Tutorial videos===

[[rachel_1.0_tutorial_videos | New Tutorial videos]] are being produced for version 1.0. These will be much shorter and more focused than the old videos.

You can still watch [[rachel_beta_tutorial_videos | beta-version tutorial videos]], but there have been many changes. General procedures are similar. These old videos contain more topics per video, so some are quite long.

===The manual===

The Rachel manual has been incorporated into the [[Gosia_Manual | Gosia manual]].

===Other help resources===

Run-time help is available using the Help button. Users are encouraged to submit suggestions for additional help data.

===Experiment planning and accuracy testing tools===

The simulation tools have been improved since the recording of these video tutorials. The user will find extra prompts for the details of the planned beam run, and estimated absolute measured counts will be calculated and displayed. The display format looks like the following:

<pre>
Experiment 1
Target excitation by Z,A = 54,136 at 517 MeV. Mean scattering angle = 45.0 deg.
Detector 1
Single crystal at theta, phi = 45.0, 45.0 deg. Solid angle = 0.06 sr.
This simulation does not include random gaussian scatter. Counts represent the cross sections calculated by Gosia.
Transition | Gammas incident | Fraction of | Observed Counts
| on Ge detectors | Gamma Incident |
Initial Final | | Energy **Detector Gammas |
Band Spin Band Spin | Counts *Error | (keV) Efficiency Detected | Rate(Hz) Counts ***Error
-------------------------------------------------------------------------------------------------------------------------
gsb 1.5 gsb 0.5 4.662e+06 2.332e+05 100.0 0.00049 0.09962 1.075e+00 4.644e+05 6.815e+02
gsb 2.5 gsb 0.5 1.570e+07 7.848e+05 200.0 0.00179 0.36853 1.339e+01 5.784e+06 2.405e+03
a 2.5 gsb 0.5 1.079e+04 5.647e+02 250.0 0.00189 0.38907 9.719e-03 4.199e+03 6.480e+01
a 2.5 gsb 1.5 9.816e+02 7.705e+01 150.0 0.00135 0.27823 6.322e-04 2.731e+02 1.653e+01
a 2.5 b 3.5 4.689e+05 2.376e+04 75.0 0.00015 0.0312 3.387e-02 1.463e+04 1.210e+02
</pre>

The "Observed Counts" are calculated using the efficiency curve from the detector library or a detector created by the user. The "Detector Efficiency" <math>\epsilon</math> is the usual definition. Possion counting errors are based on the observed counts, while additional error on the ''total'' efficiency-corrected counts may be added by the user.

Refer to the page [[Rachel_simulated_yield_output | Rachel simulated yield output]] for more information about simulations with the GUI.

===Troubleshooting===

For troubleshooting help, refer to the [[rachel_troubleshooting | troubleshooting]] page, or use the search box at the left.

==Bug reports==

Check the [[gui_release_notes | release notes]] page for a history of bugs and bug-fix versions.

Users are encouraged to submit bug reports via the [http://www-user.pas.rochester.edu/~gosia/phpBB3/ Gosia forum]. The operation that revealed the bug should be reported, and the session file saved before this operation should be included if possible.

==Links==

[http://www.pas.rochester.edu/~hayes/beta_rachel/main_ad.html The Rachel advertising video]

==Notes==

<references/>

Gui release notes

2012-11-05T20:53:35Z

Gosia: /* Changes */

These versions are listed from newest to oldest.

=Versions 1.x=

==Version 1.3.0==

===Description===

New features: Thick-target calculations are now fully-automated. The user is prompted if the thick target requires extra consideration, whereas, in older versions, the user would get error messages and have to fix it herself.

===Changes===

* Thick target calculations are now fully-automated
* Lifetime calculations are now fully-automated (one-click)
* Vacuum deorientation calculations are now fully-automated and can be run at any time when the experimental setup is complete.
* Two logs have been added: a procedure log with timestamps and a user log that can be edited inside the GUI.
* Tab-completion of filenames and paths
* Improved reading of AGS level schemes that are missing spin/parity assignments
* The assumed Q-value is lowered automatically when the projectile energy is too low

====Bug-fixes====

Fixed a bug that used the wrong kinematic solution for inverse kinematics in some fits. This caused inaccuracy in finding the minimum in some cases.

Errors are more graceful if the user tries to perform an operation before setup is complete.

The splash screen now renders properly.

===Known bugs and issues===

In all versions, it is possible to save an empty session over an existing session. Frequent backups of the working directory should be made.

This version is not backward-compatible with the beta versions; users must re-define the experimental
definitions. Level and matrix data CAN be exported from beta versions and imported to this version. All
later versions are expected to preserve backward compatibility with version 1.2.0
Plots of collision functions cannot be generated for all states.

===Recommendations===

To migrate from a beta version to version 1.1.4, export the level scheme and matrix, then import them into a
new session in this version.

==Version 1.2.0==

===Description===

===Changes===

The normalization of calculated yields to experimental yields in the GUI now matches the normalization used by Gosia. The previous Rachel versions weighted yields by their fractional errors when calculating the normalizations. This can make plotting and understanding the chi-squared values confusing. For example, when low-intensity gamma-ray yields are poorly reproduced, the high-intensity yields can appear to be poorly reproduced.

The new method in version 1.2.0 weights the individual yields' contributions to the normalization factor by their intensity only.

This version is backward-compatible with all versions 1.0 and later.

See version 1.0.

====Bug-fixes====

===Known bugs and issues===

In all versions, it is possible to save an empty session over an existing session. Frequent backups of the working directory should be made.

This version is not backward-compatible with the beta versions; users must re-define the experimental
definitions. Level and matrix data CAN be exported from beta versions and imported to this version. All
later versions are expected to preserve backward compatibility with this version.
Plots of collision functions cannot be generated for all states.

===Recommendations===

To migrate from a beta version to version 1.2.0, export the level scheme and matrix, then import them into a
new session in this version.

==Version 1.1.5==

===Description===

This version is backward-compatible with all versions 1.0 and later.

See version 1.0.

===Changes===

None

====Bug-fixes====

A bug that affected only the fitting and corrected yield calculations has been fixed. Occasionally, but not always, this bug resulted in incorrect yield data being passed to Gosia using the "Write Gosia yld file" button, which would affect fitting. It did not affect integrated yield calculations, simulations or plotting, and the integrated yield function still gave the correct chi-squared value.

See the recommendations section below.

===Known bugs and issues===

In all versions to date, the sensitivity map (OP,MAP) is calculated in the same Gosia call that does a fit (OP,MINI). This works in most cases, but it may cause errors occasionally in inverse-kinematics calculations. (This is not confirmed, but the error will be reported if it occurs.) The sensitivity map will be calculated in a separate call in the next bug-fix version.

Level schemes that do not have spins in order of increasing energy within a band, e.g. 1-, 0-, 3-, 2-..., will cause errors in generating the Gosia input, and the full yield data set may not be passed to Gosia for fitting matrix elements. The expected date for the bug fix is not known. In the meantime, separate each state to a separate band. (It may be sufficient to separate the ground state and put it in band #1, then put all remaining states in another band.) Be sure to check the K values that the GUI has assumed and normalization constants for the Alaga rule compared to the in-band rotor model.

In all versions, it is possible to save an empty session over an existing session. Frequent backups of the working directory should be made.

This version is not backward-compatible with the beta versions; users must re-define the experimental
definitions. Level and matrix data CAN be exported from beta versions and imported to this version. All
later versions are expected to preserve backward compatibility with this version.
Plots of collision functions cannot be generated for all states.

===Recommendations===

Refer to the bug-fix above. To correct possible errors in prior fits, do the following 'if a fit has been performed'.
No corrections are needed if a fit has not been performed with an earlier version.

# Rewrite the Gosia yield file using the button "Write Gosia yld file."
# Re-run the "Make corrected yields" calculation.
# Re-run the "Fit" calculation.
# Re-run any error calculations that have been done.
# Before comparing experimental yields to calculated yields (plotting, etc.), re-run "Integrated yields" to update the calculated yields for the new matrix elements.
# Save the session.

The new fitted matrix elements can be compared to previous calculations to see if the bug had affected fits.

To migrate from a beta version to this version, export the level scheme and matrix, then import them into a
new session in this version.

==Version 1.1.4==

===Description===

This version is backward-compatible with all versions 1.0 and later.

See version 1.0.

===Changes===

The user must now answer "y" or "n" when asked whether to save the session upon exiting. This helps to prevent accidentally overwriting the session file.

====Bug-fixes====

All yield data are properly displayed when plotting yields for merged bands.

Some previous versions did not parse comments properly in detector array files has been fixed. This bug had made it impossible to import a few of the array files that come with the Rachel package.

===Known bugs and issues===

In all versions, it is possible to save an empty session over an existing session. Frequent backups of the working directory should be made.

This version is not backward-compatible with the beta versions; users must re-define the experimental
definitions. Level and matrix data CAN be exported from beta versions and imported to this version. All
later versions are expected to preserve backward compatibility with version 1.1.4.
Plots of collision functions cannot be generated for all states.

===Recommendations===

To migrate from a beta version to version 1.1.4, export the level scheme and matrix, then import them into a
new session in this version.

==Version 1.1.3==

===Known bugs and issues===

''The following bug affects the plotting function, but does not affect the accuracy of calculations.''

In some cases, plots of gamma-ray yields will not show all of the data for merged bands. For example, if odd-spin states in band "b" are merged into the even spin states of band "a," a plot of the yield data for the merged band "a" may not show the yields from the states of the original band "b."

In all versions, it is possible to save an empty session over an existing session. Frequent backups of the working directory should be made.

This version is not backward-compatible with the beta versions; users must re-define the experimental
definitions. Level and matrix data CAN be exported from beta versions and imported to this version. All
later versions are expected to preserve backward compatibility with version 1.1.3.
Plots of collision functions cannot be generated for all states.

===Description===

See version 1.0.

====Bug-fixes====

It is now possible to add in-band matrix elements of any multipolarity that conserves parity, i.e., E2, E4, E6 and M1. There was no accuracy error associated with this bug.

===Recommendations===

To migrate from a beta version to version 1.1.3, export the level scheme and matrix, then import them into a
new session in this version.

==Version 1.1.2==

===Known bugs and issues===

In all versions, it is possible to save an empty session over an existing session. Frequent backups of the working directory should be made.

This version is not backward-compatible with the beta versions; users must re-define the experimental
definitions. Level and matrix data CAN be exported from beta versions and imported to this version. All
later versions are expected to preserve backward compatibility with version 1.1.2.
Plots of collision functions cannot be generated for all states.

===Description===

See version 1.0.

====Bug-fixes====

A bug that sometimes caused the deorientation coefficient calculation to fail has been fixed. Calculations were accurate in previous versions, but sometimes could not be read from the Gosia output.

===Recommendations===

To migrate from a beta version to version 1.1.2, export the level scheme and matrix, then import them into a
new session in this version.

==Version 1.1.1==

===Known bugs and issues===

In all versions, it is possible to save an empty session over an existing session. Frequent backups of the working directory should be made.

This version is not backward-compatible with the beta versions; users must re-define the experimental
definitions. Level and matrix data CAN be exported from beta versions and imported to this version. All
later versions are expected to preserve backward compatibility with version 1.1.
Plots of collision functions cannot be generated for all states.

===Description===

See version 1.0.

====Bug-fixes====

A bug that sometimes prevented correlated errors from being read from the Gosia output has been fixed.

===Recommendations===

To migrate from a beta version to version 1.1.1, export the level scheme and matrix, then import them into a
new session in this version.

==Version 1.1==

===Known bugs and issues===

In all versions, it is possible to save an empty session over an existing session. Frequent backups of the working directory should be made.

This version is not backward-compatible with the beta versions; users must re-define the experimental
definitions. Level and matrix data CAN be exported from beta versions and imported to this version. All
later versions are expected to preserve backward compatibility with version 1.1.
Plots of collision functions cannot be generated for all states.

The "fully-automatic" loading of yield data reports Ge detector numbers that are 1 larger than the correct number. This is misleading but does not cause any accuracy errors.

===Description===

See version 1.0

====Bug-fixes====

A bug in adding interband matrix elements is fixed. Version 1.0 did not include all allowed couplings.

===Recommendations===

To migrate from a beta version to version 1.1, export the level scheme and matrix, then import them into a
new session in this version.

==Version 1.0==

===Known bugs and issues===

In all versions, it is possible to save an empty session over an existing session. Frequent backups of the working directory should be made.

This version is not backward-compatible with the beta versions; users must re-define the experimental
definitions. Level and matrix data CAN be exported from beta versions and imported to this version. All
later versions are expected to preserve backward compatibility with version 1.0.
Plots of collision functions cannot be generated for all states.

The "fully-automatic" loading of yield data reports Ge detector numbers that are 1 larger than the correct number. This is misleading but does not cause any accuracy errors.

===Description===

Faster setup of calculations.

Defining complicated detector arrays can be done in one operation.

A library of detector types and arrays is included.

Loading of all experimental yield data can be done in one operation.

Simulations now use the standard definition of Ge efficiency.

Simulated yield tables are clearer.

Stopping power and exit energy are calculated by Elast automatically.

The Rochester SRIM server can be called for more accurate stopping power data.

Thick-target experiments are handled accurately, including backscatter detection from the surface.

The correction to the gamma angular distribution now includes the motion of the emitting nucleus.

Deorientation coefficients and lifetimes can be calulated in a few seconds.

====Bug-fixes====

Merging, deleting and reordering of bands are allowed at any time.

Any number of bands can be merged. (See restrictions regarding duplicate spin states and different-parity
states in one band.)

Malfunctions during plotting of yield data are fixed. The overall normalization for all data sets is now
used in plots comparing measured and predicted yields.

The reported chi-squared values are properly-weighted on plots and in reports. (Chi-squared and
normalization was done correctly in fits in all versions.)

It is no longer necessary to reload yield data after changing the level scheme, unless new states are
added.

===Recommendations===

To migrate from a beta version to version 1.0, export the level scheme and matrix, then import them into a
new session in this version.

=Beta Versions=

==Version 2.0.8.beta==

===Known bugs and issues===

The GUI allows only simple changes to the level scheme after the matrix and experiment have been defined (adding and deleting of bands). The release candidate (expected September 2011) has the ability to merge and reorder bands at any time.

If the level scheme is changed after calculated or experimental yield data are in memory, the user must reload the experimental data and generate new calculated yields. This has been fixed in the release candidate version (expected September 2011).

===Description===

This version uses a more accurate estimate of a typical Ge detector's ''intrinsic'' efficiency (based on Gammasphere's efficiency) to give approximate "raw" count rates. The total counts (for 100% efficienct detectors) were found to agree with perturbation calculations for weakly-coupled two-state systems, where the perturbation method is accurate.

Refer to the recommendations section if you are working with simulated yield data.

This version preserves the same backward compatibility with older session files as did version 2.0.6.beta.

This is expected to be the last beta release before a significantly upgraded release version expected in July.

===Recommendations===

If you are working with simulated data, refer to the page [[Rachel_simulated_yield_output | Rachel simulated yield output]] for a description of the new output format and the meaning of terms.

==Version 2.0.7.beta==

===Known bugs and issues===

None

===Description===

This is a bug-fix version relative to 2.0.6.beta.

# The simulated yield data are now updated properly.
# The simulated data now include the proper Ge detector solid angle factor. Simulated yield data are corrected by dividing the simulated raw counts by a factor of <math>\epsilon \Delta\Omega_\gamma</math>, where <math>\epsilon</math> is the approximate intrinsic efficiency (<math>0<\epsilon <1</math>) and <math>\Delta\Omega_\gamma</math> is the solid angle subtended by the Ge detector. In previous Rachel versions, the absence of the solid angle factor would cause a systematic disagreement between Ge detectors only if they subtended different solid angles.

Refer to the recommendations section if you are working with simulated yield data.

This version preserves the same backward compatibility with older session files as did version 2.0.6.beta.

This is expected to be the last beta release before a significantly upgraded release version expected in July.

===Recommendations===

If you are not working with simulated data, no corrections are needed.

ONLY if simulated data are in use, re-run the simulated data calculation. Answer "yes" to the prompt to re-integrate the yield data.

==Version 2.0.6.beta==

===Known bugs and issues===

When calculating simulated yields, the new simulated yield data in session (and saved session file) will not be updated unless the user answers "y" to the prompt "Re-integrate the predicted yields? [Y/n]:" This may or may not affect subsequent fits to the simulated data, depending on the changes to the matrix, experimental parameters, detector arrangements, etc. The new simulated data are written correctly to the terminal and to the gosia yield file, so fits would not be affected, but a large disagreement between simulated data and calculated yields could appear on plots. ''Remedy: always choose to re-integrated the yields when calculating simulated yield data.''

===Description===

This is a bug-fix version relative to 2.0.5.beta.

Refer to the notes for "Version 2.0.5.beta" below for the details of the bug fix and the recommended solution to update your session files.

This version preserves the same backward compatibility with older session files as did version 2.0.5.beta.

This is expected to be the last beta release before a significantly upgraded release version expected in July.

===Recommendations===

After replacing an older version of Rachel with this version, re-integrate the calculated yields in memory by selecting "Integrated yields" and "Run gosia input" and clicking "Go." This will update the calculated yields and overwrite any erroneous calculated yields that may be in memory from the bug.

==Version 2.0.5.beta==

===Known bugs and issues===

The bug in version 2.0.4.beta is still not completely fixed. See below. A new version will be released probably in mid-June 2011. Refer to this post in the Gosia forum to see how to correct for the bug:

[http://www-user.pas.rochester.edu/~gosia/phpBB3/viewtopic.php?f=9&t=9 Forum post on correcting for the bug]

===Description===

This is a bug-fix version relative to 2.0.4.beta, and some user prompts and output information is clarified.

The GUI now correctly informs you of the choices of kinematic solutions for inverse kinematics cases. The safe energy is reported before asking for the initial beam energy.

Refer to the notes for "Version 2.0.4.beta" below for the details of the bug fix and the recommended solution to update your session files.

This version preserves the same backward compatibility with older session files as did version 2.0.4.beta.

This is expected to be the last beta release before a significantly upgraded release version expected in July.

==Version 2.0.4.beta==

===Known bugs and issues===

This version has one known bug: if the user selects "View gosia input" or "Save gosia input" for some types of calculations, such as "Integrated yields," inaccurate point yields would be stored in memory after the operation. This could be more or less apparent, depending on how accurate the point-scattering approximation is for the experiments defined. The absolute cross sections then reported on plots could then be extremely inaccurate.

After running "Integrated yields" with "Run gosia input" selected, the calculated yields and absolute cross sections on plots would (again) be accurate.

This bug does not affect real yield data or simulated yield data. This bug would not affect fitting of matrix elements, since the ''corrected'' yields used by Gosia are stored in an external file only.

====Remedies====

# Upgrade to version 2.0.5.beta.
# Re-run the "Integrated yields" calculation to store accurately-calculated yields in memory. (Save the session.) This will update all calculated data in memory and on plots.

Gosia

2012-11-05T18:42:59Z

Gosia: /* Downloads */

Follow @GosiaCoulex on [http://twitter.com/#!/GosiaCoulex Twitter] for new version announcements and bug-fixes.

Gosia is the primary analysis code for planning experiments and analyzing data for nuclear structure physics using [[low-energy Coulomb excitation]] experiments. It is suited for both planning experiments and analysis of Coulomb excitation data. The original version was written at the University of Rochester in 1979--1980 by [[Tomasz Czosnyka]], [http://www.pas.rochester.edu/~cline/ D. Cline] and [http://www.turpion.org/links/ca4ad02e0d0fafd70a31c549cf4b3c4c_0.phtml C.Y. Wu]. T. Czosnyka maintained the code until his untimely death in 2006. [[What_is_Gosia | Learn more...]].

==What Gosia can do for the experimenter==

===Experiment planning and simulation===

The GOSIA suite of codes are ideally suited to the design and planning of
heavy-ion induced Coulomb excitation experiments as well as the subsequent
analysis. Coulomb excitation experiments can seem deceptively simple,
especially for few-state problems, leading some experimenters to fall into
analysis traps or collecting data that have less than optimal sensitivity to
the goals of the experiment. The [[experiment_planning | Experiment planning]] page identifies potential pitfalls
in the design and analysis of Coulomb excitation experiments.

===Analysis of Coulomb excitation data===

The motivation for development of Gosia was to
implement the capability to extract measured
<math>E\lambda</math>
matrix elements model-independently from Coulomb excitation data. The first
major task required to achieve this goal was to design experiments covering a
wide dynamic range of Coulomb excitation strength that provide sufficient
experimental data to overdetermine the many unknown matrix elements.
Experimental techniques were developed to achieve this requirement in the
1980's and primarily involved Coulomb excitation measurements over a wide
range of both scattering angle and unexcited nucleus
<math>Z</math> value. The second major task was the development of Gosia to
model-independently extract the matrix elements via a least-squares search of
the data. During the 1980's and early 1990's the ready availability of beam
time at heavy-ion accelerator facilities, the availability of high-efficiency
<math>p-\gamma</math> detector facilities, and access to fast computer systems needed for the Gosia
least-squares searches, enabled the first model-independent extraction of
<math>E\lambda</math>
matrix elements from multiple Coulomb excitation data.

[[Model_independent_analysis | Model-independent analysis]]

[[Model_dependent_analysis | Model-dependent analysis]]

==Selected special topics==

Other topics can be found using the search box at the left.

[[common_mistakes | Common mistakes in Gosia calculations]]

[[Integrated_yields | Interpreting the "integrated yields" output]]

[[normalization_of_yield_data | Normalization of gamma-ray yield data]]

==Downloads==

Note that Gosia version numbers are coded as YYYYMMDD.N, where N is a minor update or bug-fix on the original YYYYMMDD version. For example, version 20110524.2 was released on 2011-11-07. ''Some recent releases have an incorrect message "LATEST REVISION- JUNE 2006" in the output file header.''

(Right-click to download source codes.)

* The current version (20120510) of the [http://www.pas.rochester.edu/~cline/Gosia/Gosia_Manual_20120510.pdf Gosia manual]
* The latest release (20110524.2) of [http://www.pas.rochester.edu/%7Ehayes/gosia_versions/gosia_20110524.2.f Gosia]
* The latest release (2_20081208.14) of [http://www.pas.rochester.edu/%7Ehayes/gosia_versions/gosia2_20081208.14.f Gosia2], for analysing simultaneous Coulomb excitation of target and projectile, using a common normalization.
* [http://www.pas.rochester.edu/~hayes/rachel_1/rachel_distribution_1.3.0.tar Rachel release version 1.3.0], the graphical interface for Gosia. See also the [[Gui_release_notes | Version notes]] page for new features.
* [http://www.pas.rochester.edu/%7Ecline/Research/GOSIAcodes/pawel-06-mod.f Pawel], the Gosia version to treat excitation of a nucleus in an isomer state
* [http://www.pas.rochester.edu/%7Ecline/Research/GOSIAcodes/gosia_arm.for ANNL (Anneal)], a special version of Gosia developed by Rich Ibbotson that uses simulated annealing techniques to locate minima
* [http://www.pas.rochester.edu/%7Ecline/Research/GOSIAcodes/sigma.f Sigma], the 2006 Fortran source code for deducing the quadrupole invariants from the E2 matrix elements determined by Gosia
* [http://www.pas.rochester.edu/%7Ecline/Research/GOSIAcodes/gremlin.f GREMLIN], the gamma-ray detector efficiency code developed for use with GOSIA in 1987 by Alexander Kavka

* The set of [http://www.pas.rochester.edu/~hayes/gosia_downloads/fit_demo_2011.tar demonstration files] to accompany the Gosia tutorial in chapter 14 of the Gosia Manual

==Installing Gosia==

Installation of Gosia requires only the following steps:

# Compiling gosia with a Fortran compiler
# Setting the default path or alias to find Gosia, if desired. (See also the path requirements for [[Gui|Rachel]] and the [[rachel setup file]].)

Most standard Fortran 77 compilers will produce a working Gosia executable. GNU
<tt>g77</tt> is recommended, but is becoming deprecated on newer machines. The newer,
more commonly used <tt>gfortran</tt> will also work. Intel Fortran should work, but is not recommended, because future error trapping patches may not work well with the Intel compiler. For more information about
compiling and standard builds, refer to the page [[compiling gosia | Compiling Gosia]].

== User support ==

===The graphical interface for Gosia===

A [[Gui | GUI (Graphical User Interface) called Rachel]] has been developed. The current version can be found in the download section above. Novice Gosia users can use this interface to develop properly formatted template Gosia input files. These can be modified by comparing the input lines to the Gosia manual instructions, or Gosia can be run entirely from within the GUI for many typical [[simulation (experiment planning)]] and analysis problems.

===Example Gosia input files===

Chapter 14 of the current [[Gosia Manual]] contains an annotated example input, a flowchart of the procedures that must be run during analysis of data and a tutorial based on a set of example files which can be obtained on the [[Gosia_tutorials]] page.

===The Gosia Forum===

The new gosia forum can be found [http://www-user.pas.rochester.edu/~gosia/phpBB3/index.php here.] As described on the [[Gosia_users'_forum]] page, the Forum is the appropriate place to post requests for help with specific Gosia calculations and for experienced users to give answers and advice.

==Maintenance of the Gosia codes==

The Gosia codes are maintained by the [[Gosia_Steering_Committee]].

==Purpose of the Gosia Wiki==

While the Wiki will eventually mirror much of the content of the [http://www.pas.rochester.edu/%7Ecline/Gosia/2011manual20110428.pdf Gosia Manual], the purpose is not to reproduce the manual in its entirety. The Gosia Manual should still be considered the primary reference for running Gosia. The advantage of the Wiki format is that an unlimited number of pages can be added here by interested users on special topics that are not appropriate for a users' manual. These may include

* Examples of Gosia input and output for common calculations, such as
** input file templates
** common detector definitions
** proper data set normalizations
** fitting strategies for systems with many matrix elements
* Solutions for difficult calculations, such as extreme inverse kinematics cases
* More detailed theory notes

* Examples of the use of [[Pawel]], [[ANNL]] and other codes in the Gosia suite

Wiki users are encouraged to contribute anything that should be of general interest to the Gosia user community and to move solved problems from the Forum if they may be of general interest.

==Help for the Wiki user==

Consult the page [[Wiki_formatting]] for basic formatting instructions to contribute to this Wiki.

==Links==

Some of the following pages will be absorbed into the pages on the new Wiki server.

* The [http://www.slcj.uw.edu.pl/en/0.html Warsaw Heavy Ion Laboratory] page and the
* [http://www.slcj.uw.edu.pl/gosia_workshop 2008 Gosia Workshop] at Warsaw
* The [http://www.ikp.uni-koeln.de/~warr/gosia/ Cologne Gosia page]
* and the [http://www.pas.rochester.edu/~cline/Gosia/index.html Rochester Gosia page]

==Notes==

<references/>

Rachel GUI

2012-11-05T18:35:50Z

Gosia: /* General */ finished adding notes about back-ends

==General description==

[[File:Guisnapshot.png|thumb|right|A snapshot of the alpha version GUI.]]

For a very short video demo of capabilities, refer to the "advertising video": [http://www.pas.rochester.edu/~hayes/beta_rachel/main_ad.html The Rachel advertising video]

The Rachel interface facilitates [http://www.pas.rochester.edu/~hayes/beta_rachel/calculation_in_2_minutes.html fast setup of Gosia calculations] and data analysis using push-button controls with guided input and 'plain language' warnings during setup. Rachel is written in Python 2.6 and is expected to be Python 2.7 compliant. It runs under Linux and Unix (OS X) machines. A Windows version is not planned.

A 64-bit processor is essential, because Gosia runs fastest and most accurately on 64-bit machines. Versions 1.* have many structural changes in the code, allowing more automation, more general particle detector options and fewer user prompts for standard operations.

[[File:Typicalgosiainput.png|thumb|right|Excerpt of a typical Gosia input for a collective system.]]While gosia.20081208 incorporates the [[OP,BRIC]] command to read internal conversion data from BrIcc data files, removing the burden of entering ICC interpolation data by the user, the GUI allows the greatest possible automation by prompts for pre-defined or user-defined germanium detector crystals or arrays, calculation of Zeigler stopping power data, optimum meshpoint selection for yield calculations, transformation of rectilinear detector definition to laboratory-frame spherical-polar interpolation coordinates, etc. For standard problems, the burden on the user is reduced to entering nuclear level and matrix data for simulations (including optional data-set simulation) and real experimental data for fitting of matrix elements. For collective systems, where the matrix definition often includes several hundred lines of matrix elements, rotor parameters can be given to reduce the setup time for the initial guesses of matrix element values. This also eliminates the need for the user to re-index the reduced matrix elements by hand as changes are made to the matrix or level scheme.

==How to get the Rachel package==

Release version 1.1.5 is now available. This version does not read beta-version files, but level schemes and matrices can be ported following the instructions in the 2012 version of the Gosia manual. Refer to the [[gui_release_notes | release notes]] for the change in this version and known issues.

[http://www.pas.rochester.edu/~hayes/rachel_1/rachel_1.1.5.tar Rachel 1.1.5 download]

==Version notes==

The [[Gui_release_notes | version notes page]] gives a history of Rachel updates. Known issues are given for each version, as well as the current version.

==Installation notes==

===General===

A script was added by Mitch Allmond that compiles and sets up Rachel, Gosia and Elast in one step. First, un-tar the distribution:

<pre>
% tar -xvf rachel_distribution_1.3.0.tar
</pre>

or similar for the correct version number. Move into the new Rachel directory and run compile-all.sh:

<pre>
% cd rachel_distribution_1.3.0
% ./compile-all.sh
</pre>

You will be prompted if any previous setup information needs to be overwritten.

Rachel has been installed successfully on a number of Linux and OS X systems. Most problems are related to the level scheme graphics. Refer to [http://matplotlib.sourceforge.net/faq/installing_faq.html#backends matplotlib backends] for remedies. You can view or submit detailed installation notes for any particular operating system. (Please link them to a separate Wiki page.)

If the default python environment set in the rachel.py executable is not appropriate, the following error will appear:

<pre>
% [path].rachel.py
/usr/bin/env: python2.6: No such file or directory
%
</pre>

The correct Python environment can be invoked by typing instead:

<pre>
% [python] [path].rachel.py
</pre>

where [python] is the Python executable with the correct path and [path] is the path to the rachel.py executable where the user installed it.

===Installation notes for other Linux/Unix systems===

* [[rachel_installation_ubuntu | Ubuntu]]
* [[rachel_installation_open_suse | OpenSuse]]
* [[rachel_installation_fedora | Fedora]]
* [[rachel_installation_mac_os_x | Mac OS X]]

The final tests that all necessary libraries and codes are installed are usually the following:

* Load a level scheme and see that the level scheme window is drawn properly. Rarely, after loading a level scheme with no errors (e.g. using one of the example files included in the Rachel distribution), the user must click "Examine fig. window" once to create the level scheme window. On most systems, with the correct libraries installed, the level scheme display pops up when a valid level scheme is loaded with no errors. If the GUI starts and can load and draw the level diagram without errors, then it is unlikely that there are any missing libraries. Also note that on some systems the matplotlib back-end must be changed. This is done by editing the <tt>~/.matplotlib/matplotlibrc</tt> file so that the back-end line reads

<pre>
backend : [backend]
</pre>

where <tt>[backend]</tt> may be one of several back-ends described here: [http://matplotlib.sourceforge.net/faq/installing_faq.html#backends matplotlib backends]. Usually <tt>TkAgg</tt> works except on Mac OS X. Refer to [[rachel_installation_mac_os_x | Mac OS X]].

* After running a calculation ("integration"), test the yield-plotting feature using the "Plot yields" button. If there is an error finding gnuplot, install gnuplot on the system so that it is in the user's path, i.e., that it can be invoked by typing "gnuplot" at the terminal prompt.

==GUI version backward compatibility==

In the beta versions, the GUI preserves backward-compatibility of the saved session files, so that users can upgrade the GUI without having to rebuild the session.

When changing to version 1.0 or later, users will have to rebuild their sessions, because of major changes in the internal structure that cannot be automatically upgraded. This can be aided by the export/import tools for the level and matrix data. Subsequent versions will have the automatic upgrading reinstated.

==Graphics Issues==

If you do not see a level scheme diagram after loading a level scheme or a saved session, click "Examine fig. window" once. The level scheme should then appear.

If it does not, or if the level scheme window buttons (zoom, pan, etc.) do not work, you may need to change the graphics back-end. The matplotlib graphics library used for the level scheme and particle detector layout comes with several choices of back-ends.

*On OS X machines, "macosx" may work best.
*On Ubuntu, GTKAgg works best, but the user must click "Examine fig. window" 'once' after loading a level scheme or saved session.

The back-end is in the matplotlibrc file in the .matplotlib directory, or will be, after you start Rachel for the first time.

<pre>
hayes@Sobchak:~$ cd .matplotlib/
hayes@Sobchak:~/.matplotlib$ ll
total 116K
drwxr-xr-x 3 hayes hayes 4.0K Nov 5 12:30 ./
drwxr-xr-x 125 hayes hayes 12K Nov 5 12:53 ../
-rw-r--r-- 1 hayes hayes 92K Oct 27 13:13 fontList.cache
-rw-r--r-- 1 hayes hayes 17 Aug 19 02:09 matplotlibrc
drwxrwxr-x 2 hayes hayes 4.0K Oct 27 13:13 tex.cache/
hayes@Sobchak:~/.matplotlib$ cat matplotlibrc
backend : GTKAgg
hayes@Sobchak:~/.matplotlib$
</pre>

Change the backend line as desired. The choices are found

==Capabilities of version 1==

Note that there are major simplifications in the Ge detector array setup and data loading.

* Human-readable data files that are robust for changes in the experimental setup and level scheme
* Azimuthally symmetric particle detection
* Partitioning particle-detector data by azimuthal angle
* Graphical definition of rectilinear or irregular-shaped particle detectors [[File:rectilineardetectorexample.png|thumb|right|A user-defined rectilinear detector automatically transformed into the laboratory spherical polar coordinates for Gosia. Black edge is the "exact" shape; red lines are the azimuthal range samples passed to Gosia.]]
* 4pi experiments (e.g. experiments with no particle detection)
* Normal or inverse kinematics experiments
* A user-expandable library of standard Ge crystals e.g. Gammasphere
* A user-expandable library of detector arrays (Tigress, Miniball, Gammasphere...)
* Data from summed 4pi arrays
* Efficiency-corrected gamma-ray data only
* Experiment planning aids
** Generation of simulated data based on a proposed beam run
** Optional quasi-Gaussian random scatter in simulated data
** Estimated precision of the proposed measurement
* Accuracy testing to determine if Gosia will be appropriate for a planned experiment
* Fitting and correlated error estimations
* Reading level schemes and gamma-ray data from Radware AGS files and [[Rachel_yield_data_files | Rachel text format]] including
** Branching ratio data
** Previously measured EM matrix elements, including the measured phases
** Lifetime data for ''excited states'' (not the ground state lifetime)
** Mixing ratios
* Several supported data file formats
** [Radware] AGS format
** [[Rachel format nuclear data files]]
** Gosia format (experimental yield and fitted matrix element data)
* Instantly generating plots of experimental vs. predicted yields via gnuplot [[File:plottingexample.png|thumb|right|A zoomed view of a plot of yield vs. spin in a rotational band generated from the Gosia output and experimental data.]]
* Automated generation of stopping power and internal conversion input for Gosia
* Push-button controls, optional pop-up guidance and guided prompts
* A searchable help function
* Undo/Redo of most functions and crash recovery

Using Rachel, the user will be able to build a level scheme from either a hand-written text file and/or a Radware AGS file, define the experimental setup and import relative-efficiency-corrected gamma-ray data from Rachel-format text and/or AGS files. The matrix and fit parameters can be defined by push-buttons and prompts or imported from a Rachel-format matrix file. Gosia will then be run by push-button GUI controls. Most prompts will be preceded by help information, suggestions, or warnings.

For experiments that fit the capabilities above, the user can view the Gosia inputs to learn the format, but will not be required to type any input code. Experienced Gosia users can export a GUI-generated input skeleton file and abandon the GUI to use the more advanced capabilities of Gosia.

==Upgrade strategy==

Upgrades are being made to incorporate all of the capabilities of Gosia, with a focus on the most commonly used features. Prioritization of the upgrades eventually will be directed primarily by [[software upgrade voting|votes]] cast by the user community. Users are encouraged to submit requested upgrades to handle present features of Gosia that are not already included, ''as well as new functions that Gosia does not handle, but which could be incorporated via the GUI.''

This voting plan has not been implemented yet. Users are encouraged to suggest desired upgrades through the Forum or the [[rachel_desired_upgrades | desired upgrades]] page to steer the software development.

===Planned upgrades===

There are a number of planned upgrades, many of which have already been added to versions 1.0 and later. The upgrade plan and priorities will be changed based on user feedback and bug reports.

# More accurate stopping power calculations for low-Z beams.
# Improved graphics including
## a transition from matplotlib graphics to pyGtk in the level scheme window
## clickable objects in the level scheme diagram
# Addition of Ge clusters with libraries of array geometries (Gammasphere, Agata, Miniball etc.)
# Plot functions to visualize fit conflicts in the data
# Improved object structure for Ge detectors. This will reduce the burden on the user by automatically updating the data set passed to Gosia as the level scheme and matrix change.
# Optional setting of symbolic matrix definitions, whereas now the matrix is stored numerically. This will allow greater user control by allowing tuning of model parameters, e.g. <gam|E2|gsb> = M1 + a*M2, where 'a' can be adjusted by the user.
# Optional simple distributed processing of some functions. This will allow the user to set a maximum number of independent processes to speed up separable calculations (integrated yields, corrected yields and experiment simulations) by issuing a separate call to Gosia for each process<ref>True distributed computing is not handled by the current version of Gosia</ref>.

==Videos, manual and run-time help==

===Quick advertising and demos===

[http://www.pas.rochester.edu/~hayes/beta_rachel/main_ad.html The Rachel advertising video]

[http://www.pas.rochester.edu/~hayes/beta_rachel/calculation_in_2_minutes.html Fast setup of Gosia calculations]

===Help with Rachel on this Wiki===

Use the search function to the left, or start here.

[[rachel_selected_topics | Selected help topics for Rachel]]

===Tutorial videos===

[[rachel_1.0_tutorial_videos | New Tutorial videos]] are being produced for version 1.0. These will be much shorter and more focused than the old videos.

You can still watch [[rachel_beta_tutorial_videos | beta-version tutorial videos]], but there have been many changes. General procedures are similar. These old videos contain more topics per video, so some are quite long.

===The manual===

The Rachel manual has been incorporated into the [[Gosia_Manual | Gosia manual]].

===Other help resources===

Run-time help is available using the Help button. Users are encouraged to submit suggestions for additional help data.

===Experiment planning and accuracy testing tools===

The simulation tools have been improved since the recording of these video tutorials. The user will find extra prompts for the details of the planned beam run, and estimated absolute measured counts will be calculated and displayed. The display format looks like the following:

<pre>
Experiment 1
Target excitation by Z,A = 54,136 at 517 MeV. Mean scattering angle = 45.0 deg.
Detector 1
Single crystal at theta, phi = 45.0, 45.0 deg. Solid angle = 0.06 sr.
This simulation does not include random gaussian scatter. Counts represent the cross sections calculated by Gosia.
Transition | Gammas incident | Fraction of | Observed Counts
| on Ge detectors | Gamma Incident |
Initial Final | | Energy **Detector Gammas |
Band Spin Band Spin | Counts *Error | (keV) Efficiency Detected | Rate(Hz) Counts ***Error
-------------------------------------------------------------------------------------------------------------------------
gsb 1.5 gsb 0.5 4.662e+06 2.332e+05 100.0 0.00049 0.09962 1.075e+00 4.644e+05 6.815e+02
gsb 2.5 gsb 0.5 1.570e+07 7.848e+05 200.0 0.00179 0.36853 1.339e+01 5.784e+06 2.405e+03
a 2.5 gsb 0.5 1.079e+04 5.647e+02 250.0 0.00189 0.38907 9.719e-03 4.199e+03 6.480e+01
a 2.5 gsb 1.5 9.816e+02 7.705e+01 150.0 0.00135 0.27823 6.322e-04 2.731e+02 1.653e+01
a 2.5 b 3.5 4.689e+05 2.376e+04 75.0 0.00015 0.0312 3.387e-02 1.463e+04 1.210e+02
</pre>

The "Observed Counts" are calculated using the efficiency curve from the detector library or a detector created by the user. The "Detector Efficiency" <math>\epsilon</math> is the usual definition. Possion counting errors are based on the observed counts, while additional error on the ''total'' efficiency-corrected counts may be added by the user.

Refer to the page [[Rachel_simulated_yield_output | Rachel simulated yield output]] for more information about simulations with the GUI.

===Troubleshooting===

For troubleshooting help, refer to the [[rachel_troubleshooting | troubleshooting]] page, or use the search box at the left.

==Bug reports==

Check the [[gui_release_notes | release notes]] page for a history of bugs and bug-fix versions.

Users are encouraged to submit bug reports via the [http://www-user.pas.rochester.edu/~gosia/phpBB3/ Gosia forum]. The operation that revealed the bug should be reported, and the session file saved before this operation should be included if possible.

==Links==

[http://www.pas.rochester.edu/~hayes/beta_rachel/main_ad.html The Rachel advertising video]

==Notes==

<references/>

Rachel GUI

2012-11-05T18:34:05Z

Gosia: /* General */

==General description==

[[File:Guisnapshot.png|thumb|right|A snapshot of the alpha version GUI.]]

For a very short video demo of capabilities, refer to the "advertising video": [http://www.pas.rochester.edu/~hayes/beta_rachel/main_ad.html The Rachel advertising video]

The Rachel interface facilitates [http://www.pas.rochester.edu/~hayes/beta_rachel/calculation_in_2_minutes.html fast setup of Gosia calculations] and data analysis using push-button controls with guided input and 'plain language' warnings during setup. Rachel is written in Python 2.6 and is expected to be Python 2.7 compliant. It runs under Linux and Unix (OS X) machines. A Windows version is not planned.

A 64-bit processor is essential, because Gosia runs fastest and most accurately on 64-bit machines. Versions 1.* have many structural changes in the code, allowing more automation, more general particle detector options and fewer user prompts for standard operations.

[[File:Typicalgosiainput.png|thumb|right|Excerpt of a typical Gosia input for a collective system.]]While gosia.20081208 incorporates the [[OP,BRIC]] command to read internal conversion data from BrIcc data files, removing the burden of entering ICC interpolation data by the user, the GUI allows the greatest possible automation by prompts for pre-defined or user-defined germanium detector crystals or arrays, calculation of Zeigler stopping power data, optimum meshpoint selection for yield calculations, transformation of rectilinear detector definition to laboratory-frame spherical-polar interpolation coordinates, etc. For standard problems, the burden on the user is reduced to entering nuclear level and matrix data for simulations (including optional data-set simulation) and real experimental data for fitting of matrix elements. For collective systems, where the matrix definition often includes several hundred lines of matrix elements, rotor parameters can be given to reduce the setup time for the initial guesses of matrix element values. This also eliminates the need for the user to re-index the reduced matrix elements by hand as changes are made to the matrix or level scheme.

==How to get the Rachel package==

Release version 1.1.5 is now available. This version does not read beta-version files, but level schemes and matrices can be ported following the instructions in the 2012 version of the Gosia manual. Refer to the [[gui_release_notes | release notes]] for the change in this version and known issues.

[http://www.pas.rochester.edu/~hayes/rachel_1/rachel_1.1.5.tar Rachel 1.1.5 download]

==Version notes==

The [[Gui_release_notes | version notes page]] gives a history of Rachel updates. Known issues are given for each version, as well as the current version.

==Installation notes==

===General===

A script was added by Mitch Allmond that compiles and sets up Rachel, Gosia and Elast in one step. First, un-tar the distribution:

<pre>
% tar -xvf rachel_distribution_1.3.0.tar
</pre>

or similar for the correct version number. Move into the new Rachel directory and run compile-all.sh:

<pre>
% cd rachel_distribution_1.3.0
% ./compile-all.sh
</pre>

You will be prompted if any previous setup information needs to be overwritten.

Rachel has been installed successfully on a number of Linux and OS X systems. Most problems are related to the level scheme graphics. Refer to [http://matplotlib.sourceforge.net/faq/installing_faq.html#backends] for remedies. You can view or submit detailed installation notes for any particular operating system. (Please link them to a separate Wiki page.)

If the default python environment set in the rachel.py executable is not appropriate, the following error will appear:

<pre>
% [path].rachel.py
/usr/bin/env: python2.6: No such file or directory
%
</pre>

The correct Python environment can be invoked by typing instead:

<pre>
% [python] [path].rachel.py
</pre>

where [python] is the Python executable with the correct path and [path] is the path to the rachel.py executable where the user installed it.

===Installation notes for other Linux/Unix systems===

* [[rachel_installation_ubuntu | Ubuntu]]
* [[rachel_installation_open_suse | OpenSuse]]
* [[rachel_installation_fedora | Fedora]]
* [[rachel_installation_mac_os_x | Mac OS X]]

The final tests that all necessary libraries and codes are installed are usually the following:

* Load a level scheme and see that the level scheme window is drawn properly. Rarely, after loading a level scheme with no errors (e.g. using one of the example files included in the Rachel distribution), the user must click "Examine fig. window" once to create the level scheme window. On most systems, with the correct libraries installed, the level scheme display pops up when a valid level scheme is loaded with no errors. If the GUI starts and can load and draw the level diagram without errors, then it is unlikely that there are any missing libraries. Also note that on some systems the matplotlib back-end must be changed. This is done by editing the <tt>~/.matplotlib/matplotlibrc</tt> file so that the back-end line reads

<pre>
backend : [backend]
</pre>

where <tt>[backend]</tt> may be one of several back-ends described here: [http://matplotlib.sourceforge.net/faq/installing_faq.html#backends matplotlib backends]. Usually <tt>TkAgg</tt> works except on Mac OS X. Refer to [[rachel_installation_mac_os_x | Mac OS X]].

* After running a calculation ("integration"), test the yield-plotting feature using the "Plot yields" button. If there is an error finding gnuplot, install gnuplot on the system so that it is in the user's path, i.e., that it can be invoked by typing "gnuplot" at the terminal prompt.

==GUI version backward compatibility==

In the beta versions, the GUI preserves backward-compatibility of the saved session files, so that users can upgrade the GUI without having to rebuild the session.

When changing to version 1.0 or later, users will have to rebuild their sessions, because of major changes in the internal structure that cannot be automatically upgraded. This can be aided by the export/import tools for the level and matrix data. Subsequent versions will have the automatic upgrading reinstated.

==Graphics Issues==

If you do not see a level scheme diagram after loading a level scheme or a saved session, click "Examine fig. window" once. The level scheme should then appear.

If it does not, or if the level scheme window buttons (zoom, pan, etc.) do not work, you may need to change the graphics back-end. The matplotlib graphics library used for the level scheme and particle detector layout comes with several choices of back-ends.

*On OS X machines, "macosx" may work best.
*On Ubuntu, GTKAgg works best, but the user must click "Examine fig. window" 'once' after loading a level scheme or saved session.

The back-end is in the matplotlibrc file in the .matplotlib directory, or will be, after you start Rachel for the first time.

<pre>
hayes@Sobchak:~$ cd .matplotlib/
hayes@Sobchak:~/.matplotlib$ ll
total 116K
drwxr-xr-x 3 hayes hayes 4.0K Nov 5 12:30 ./
drwxr-xr-x 125 hayes hayes 12K Nov 5 12:53 ../
-rw-r--r-- 1 hayes hayes 92K Oct 27 13:13 fontList.cache
-rw-r--r-- 1 hayes hayes 17 Aug 19 02:09 matplotlibrc
drwxrwxr-x 2 hayes hayes 4.0K Oct 27 13:13 tex.cache/
hayes@Sobchak:~/.matplotlib$ cat matplotlibrc
backend : GTKAgg
hayes@Sobchak:~/.matplotlib$
</pre>

Change the backend line as desired. The choices are found

==Capabilities of version 1==

Note that there are major simplifications in the Ge detector array setup and data loading.

* Human-readable data files that are robust for changes in the experimental setup and level scheme
* Azimuthally symmetric particle detection
* Partitioning particle-detector data by azimuthal angle
* Graphical definition of rectilinear or irregular-shaped particle detectors [[File:rectilineardetectorexample.png|thumb|right|A user-defined rectilinear detector automatically transformed into the laboratory spherical polar coordinates for Gosia. Black edge is the "exact" shape; red lines are the azimuthal range samples passed to Gosia.]]
* 4pi experiments (e.g. experiments with no particle detection)
* Normal or inverse kinematics experiments
* A user-expandable library of standard Ge crystals e.g. Gammasphere
* A user-expandable library of detector arrays (Tigress, Miniball, Gammasphere...)
* Data from summed 4pi arrays
* Efficiency-corrected gamma-ray data only
* Experiment planning aids
** Generation of simulated data based on a proposed beam run
** Optional quasi-Gaussian random scatter in simulated data
** Estimated precision of the proposed measurement
* Accuracy testing to determine if Gosia will be appropriate for a planned experiment
* Fitting and correlated error estimations
* Reading level schemes and gamma-ray data from Radware AGS files and [[Rachel_yield_data_files | Rachel text format]] including
** Branching ratio data
** Previously measured EM matrix elements, including the measured phases
** Lifetime data for ''excited states'' (not the ground state lifetime)
** Mixing ratios
* Several supported data file formats
** [Radware] AGS format
** [[Rachel format nuclear data files]]
** Gosia format (experimental yield and fitted matrix element data)
* Instantly generating plots of experimental vs. predicted yields via gnuplot [[File:plottingexample.png|thumb|right|A zoomed view of a plot of yield vs. spin in a rotational band generated from the Gosia output and experimental data.]]
* Automated generation of stopping power and internal conversion input for Gosia
* Push-button controls, optional pop-up guidance and guided prompts
* A searchable help function
* Undo/Redo of most functions and crash recovery

Using Rachel, the user will be able to build a level scheme from either a hand-written text file and/or a Radware AGS file, define the experimental setup and import relative-efficiency-corrected gamma-ray data from Rachel-format text and/or AGS files. The matrix and fit parameters can be defined by push-buttons and prompts or imported from a Rachel-format matrix file. Gosia will then be run by push-button GUI controls. Most prompts will be preceded by help information, suggestions, or warnings.

For experiments that fit the capabilities above, the user can view the Gosia inputs to learn the format, but will not be required to type any input code. Experienced Gosia users can export a GUI-generated input skeleton file and abandon the GUI to use the more advanced capabilities of Gosia.

==Upgrade strategy==

Upgrades are being made to incorporate all of the capabilities of Gosia, with a focus on the most commonly used features. Prioritization of the upgrades eventually will be directed primarily by [[software upgrade voting|votes]] cast by the user community. Users are encouraged to submit requested upgrades to handle present features of Gosia that are not already included, ''as well as new functions that Gosia does not handle, but which could be incorporated via the GUI.''

This voting plan has not been implemented yet. Users are encouraged to suggest desired upgrades through the Forum or the [[rachel_desired_upgrades | desired upgrades]] page to steer the software development.

===Planned upgrades===

There are a number of planned upgrades, many of which have already been added to versions 1.0 and later. The upgrade plan and priorities will be changed based on user feedback and bug reports.

# More accurate stopping power calculations for low-Z beams.
# Improved graphics including
## a transition from matplotlib graphics to pyGtk in the level scheme window
## clickable objects in the level scheme diagram
# Addition of Ge clusters with libraries of array geometries (Gammasphere, Agata, Miniball etc.)
# Plot functions to visualize fit conflicts in the data
# Improved object structure for Ge detectors. This will reduce the burden on the user by automatically updating the data set passed to Gosia as the level scheme and matrix change.
# Optional setting of symbolic matrix definitions, whereas now the matrix is stored numerically. This will allow greater user control by allowing tuning of model parameters, e.g. <gam|E2|gsb> = M1 + a*M2, where 'a' can be adjusted by the user.
# Optional simple distributed processing of some functions. This will allow the user to set a maximum number of independent processes to speed up separable calculations (integrated yields, corrected yields and experiment simulations) by issuing a separate call to Gosia for each process<ref>True distributed computing is not handled by the current version of Gosia</ref>.

==Videos, manual and run-time help==

===Quick advertising and demos===

[http://www.pas.rochester.edu/~hayes/beta_rachel/main_ad.html The Rachel advertising video]

[http://www.pas.rochester.edu/~hayes/beta_rachel/calculation_in_2_minutes.html Fast setup of Gosia calculations]

===Help with Rachel on this Wiki===

Use the search function to the left, or start here.

[[rachel_selected_topics | Selected help topics for Rachel]]

===Tutorial videos===

[[rachel_1.0_tutorial_videos | New Tutorial videos]] are being produced for version 1.0. These will be much shorter and more focused than the old videos.

You can still watch [[rachel_beta_tutorial_videos | beta-version tutorial videos]], but there have been many changes. General procedures are similar. These old videos contain more topics per video, so some are quite long.

===The manual===

The Rachel manual has been incorporated into the [[Gosia_Manual | Gosia manual]].

===Other help resources===

Run-time help is available using the Help button. Users are encouraged to submit suggestions for additional help data.

===Experiment planning and accuracy testing tools===

The simulation tools have been improved since the recording of these video tutorials. The user will find extra prompts for the details of the planned beam run, and estimated absolute measured counts will be calculated and displayed. The display format looks like the following:

<pre>
Experiment 1
Target excitation by Z,A = 54,136 at 517 MeV. Mean scattering angle = 45.0 deg.
Detector 1
Single crystal at theta, phi = 45.0, 45.0 deg. Solid angle = 0.06 sr.
This simulation does not include random gaussian scatter. Counts represent the cross sections calculated by Gosia.
Transition | Gammas incident | Fraction of | Observed Counts
| on Ge detectors | Gamma Incident |
Initial Final | | Energy **Detector Gammas |
Band Spin Band Spin | Counts *Error | (keV) Efficiency Detected | Rate(Hz) Counts ***Error
-------------------------------------------------------------------------------------------------------------------------
gsb 1.5 gsb 0.5 4.662e+06 2.332e+05 100.0 0.00049 0.09962 1.075e+00 4.644e+05 6.815e+02
gsb 2.5 gsb 0.5 1.570e+07 7.848e+05 200.0 0.00179 0.36853 1.339e+01 5.784e+06 2.405e+03
a 2.5 gsb 0.5 1.079e+04 5.647e+02 250.0 0.00189 0.38907 9.719e-03 4.199e+03 6.480e+01
a 2.5 gsb 1.5 9.816e+02 7.705e+01 150.0 0.00135 0.27823 6.322e-04 2.731e+02 1.653e+01
a 2.5 b 3.5 4.689e+05 2.376e+04 75.0 0.00015 0.0312 3.387e-02 1.463e+04 1.210e+02
</pre>

The "Observed Counts" are calculated using the efficiency curve from the detector library or a detector created by the user. The "Detector Efficiency" <math>\epsilon</math> is the usual definition. Possion counting errors are based on the observed counts, while additional error on the ''total'' efficiency-corrected counts may be added by the user.

Refer to the page [[Rachel_simulated_yield_output | Rachel simulated yield output]] for more information about simulations with the GUI.

===Troubleshooting===

For troubleshooting help, refer to the [[rachel_troubleshooting | troubleshooting]] page, or use the search box at the left.

==Bug reports==

Check the [[gui_release_notes | release notes]] page for a history of bugs and bug-fix versions.

Users are encouraged to submit bug reports via the [http://www-user.pas.rochester.edu/~gosia/phpBB3/ Gosia forum]. The operation that revealed the bug should be reported, and the session file saved before this operation should be included if possible.

==Links==

[http://www.pas.rochester.edu/~hayes/beta_rachel/main_ad.html The Rachel advertising video]

==Notes==

<references/>

Rachel GUI

2012-11-05T18:30:01Z

Gosia: adding graphics issues and solutions

==General description==

[[File:Guisnapshot.png|thumb|right|A snapshot of the alpha version GUI.]]

For a very short video demo of capabilities, refer to the "advertising video": [http://www.pas.rochester.edu/~hayes/beta_rachel/main_ad.html The Rachel advertising video]

The Rachel interface facilitates [http://www.pas.rochester.edu/~hayes/beta_rachel/calculation_in_2_minutes.html fast setup of Gosia calculations] and data analysis using push-button controls with guided input and 'plain language' warnings during setup. Rachel is written in Python 2.6 and is expected to be Python 2.7 compliant. It runs under Linux and Unix (OS X) machines. A Windows version is not planned.

A 64-bit processor is essential, because Gosia runs fastest and most accurately on 64-bit machines. Versions 1.* have many structural changes in the code, allowing more automation, more general particle detector options and fewer user prompts for standard operations.

[[File:Typicalgosiainput.png|thumb|right|Excerpt of a typical Gosia input for a collective system.]]While gosia.20081208 incorporates the [[OP,BRIC]] command to read internal conversion data from BrIcc data files, removing the burden of entering ICC interpolation data by the user, the GUI allows the greatest possible automation by prompts for pre-defined or user-defined germanium detector crystals or arrays, calculation of Zeigler stopping power data, optimum meshpoint selection for yield calculations, transformation of rectilinear detector definition to laboratory-frame spherical-polar interpolation coordinates, etc. For standard problems, the burden on the user is reduced to entering nuclear level and matrix data for simulations (including optional data-set simulation) and real experimental data for fitting of matrix elements. For collective systems, where the matrix definition often includes several hundred lines of matrix elements, rotor parameters can be given to reduce the setup time for the initial guesses of matrix element values. This also eliminates the need for the user to re-index the reduced matrix elements by hand as changes are made to the matrix or level scheme.

==How to get the Rachel package==

Release version 1.1.5 is now available. This version does not read beta-version files, but level schemes and matrices can be ported following the instructions in the 2012 version of the Gosia manual. Refer to the [[gui_release_notes | release notes]] for the change in this version and known issues.

[http://www.pas.rochester.edu/~hayes/rachel_1/rachel_1.1.5.tar Rachel 1.1.5 download]

==Version notes==

The [[Gui_release_notes | version notes page]] gives a history of Rachel updates. Known issues are given for each version, as well as the current version.

==Installation notes==

===General===

A script was added by Mitch Allmond that compiles and sets up Rachel, Gosia and Elast in one step. First, un-tarthe distribution:

<pre>
% tar -xvf rachel_distribution_1.3.0.tar
</pre>

or similar for the correct version number. Move into the new Rachel directory and run compile-all.sh:

<pre>
% cd rachel_distribution_1.3.0
% ./compile-all.sh
</pre>

You will be prompted if any previous setup information needs to be overwritten.

Rachel has been installed successfully on a number of Linux and OS X systems. Most problems are related to the level scheme graphics. Refer to ----- for remedies. You can view or submit detailed installation notes for any particular operating system. (Please link them to a separate Wiki page.)

If the default python environment set in the rachel.py executable is not appropriate, the following error will appear:

<pre>
% [path].rachel.py
/usr/bin/env: python2.6: No such file or directory
%
</pre>

The correct Python environment can be invoked by typing instead:

<pre>
% [python] [path].rachel.py
</pre>

where [python] is the Python executable with the correct path and [path] is the path to the rachel.py executable where the user installed it.

===Installation notes for other Linux/Unix systems===

* [[rachel_installation_ubuntu | Ubuntu]]
* [[rachel_installation_open_suse | OpenSuse]]
* [[rachel_installation_fedora | Fedora]]
* [[rachel_installation_mac_os_x | Mac OS X]]

The final tests that all necessary libraries and codes are installed are usually the following:

* Load a level scheme and see that the level scheme window is drawn properly. Rarely, after loading a level scheme with no errors (e.g. using one of the example files included in the Rachel distribution), the user must click "Examine fig. window" once to create the level scheme window. On most systems, with the correct libraries installed, the level scheme display pops up when a valid level scheme is loaded with no errors. If the GUI starts and can load and draw the level diagram without errors, then it is unlikely that there are any missing libraries. Also note that on some systems the matplotlib back-end must be changed. This is done by editing the <tt>~/.matplotlib/matplotlibrc</tt> file so that the back-end line reads

<pre>
backend : [backend]
</pre>

where <tt>[backend]</tt> may be one of several back-ends described here: [http://matplotlib.sourceforge.net/faq/installing_faq.html#backends matplotlib backends]. Usually <tt>TkAgg</tt> works except on Mac OS X. Refer to [[rachel_installation_mac_os_x | Mac OS X]].

* After running a calculation ("integration"), test the yield-plotting feature using the "Plot yields" button. If there is an error finding gnuplot, install gnuplot on the system so that it is in the user's path, i.e., that it can be invoked by typing "gnuplot" at the terminal prompt.

==GUI version backward compatibility==

In the beta versions, the GUI preserves backward-compatibility of the saved session files, so that users can upgrade the GUI without having to rebuild the session.

When changing to version 1.0 or later, users will have to rebuild their sessions, because of major changes in the internal structure that cannot be automatically upgraded. This can be aided by the export/import tools for the level and matrix data. Subsequent versions will have the automatic upgrading reinstated.

==Graphics Issues==

If you do not see a level scheme diagram after loading a level scheme or a saved session, click "Examine fig. window" once. The level scheme should then appear.

If it does not, or if the level scheme window buttons (zoom, pan, etc.) do not work, you may need to change the graphics back-end. The matplotlib graphics library used for the level scheme and particle detector layout comes with several choices of back-ends.

*On OS X machines, "macosx" may work best.
*On Ubuntu, GTKAgg works best, but the user must click "Examine fig. window" 'once' after loading a level scheme or saved session.

The back-end is in the matplotlibrc file in the .matplotlib directory, or will be, after you start Rachel for the first time.

<pre>
hayes@Sobchak:~$ cd .matplotlib/
hayes@Sobchak:~/.matplotlib$ ll
total 116K
drwxr-xr-x 3 hayes hayes 4.0K Nov 5 12:30 ./
drwxr-xr-x 125 hayes hayes 12K Nov 5 12:53 ../
-rw-r--r-- 1 hayes hayes 92K Oct 27 13:13 fontList.cache
-rw-r--r-- 1 hayes hayes 17 Aug 19 02:09 matplotlibrc
drwxrwxr-x 2 hayes hayes 4.0K Oct 27 13:13 tex.cache/
hayes@Sobchak:~/.matplotlib$ cat matplotlibrc
backend : GTKAgg
hayes@Sobchak:~/.matplotlib$
</pre>

Change the backend line as desired. The choices are found

==Capabilities of version 1==

Note that there are major simplifications in the Ge detector array setup and data loading.

* Human-readable data files that are robust for changes in the experimental setup and level scheme
* Azimuthally symmetric particle detection
* Partitioning particle-detector data by azimuthal angle
* Graphical definition of rectilinear or irregular-shaped particle detectors [[File:rectilineardetectorexample.png|thumb|right|A user-defined rectilinear detector automatically transformed into the laboratory spherical polar coordinates for Gosia. Black edge is the "exact" shape; red lines are the azimuthal range samples passed to Gosia.]]
* 4pi experiments (e.g. experiments with no particle detection)
* Normal or inverse kinematics experiments
* A user-expandable library of standard Ge crystals e.g. Gammasphere
* A user-expandable library of detector arrays (Tigress, Miniball, Gammasphere...)
* Data from summed 4pi arrays
* Efficiency-corrected gamma-ray data only
* Experiment planning aids
** Generation of simulated data based on a proposed beam run
** Optional quasi-Gaussian random scatter in simulated data
** Estimated precision of the proposed measurement
* Accuracy testing to determine if Gosia will be appropriate for a planned experiment
* Fitting and correlated error estimations
* Reading level schemes and gamma-ray data from Radware AGS files and [[Rachel_yield_data_files | Rachel text format]] including
** Branching ratio data
** Previously measured EM matrix elements, including the measured phases
** Lifetime data for ''excited states'' (not the ground state lifetime)
** Mixing ratios
* Several supported data file formats
** [Radware] AGS format
** [[Rachel format nuclear data files]]
** Gosia format (experimental yield and fitted matrix element data)
* Instantly generating plots of experimental vs. predicted yields via gnuplot [[File:plottingexample.png|thumb|right|A zoomed view of a plot of yield vs. spin in a rotational band generated from the Gosia output and experimental data.]]
* Automated generation of stopping power and internal conversion input for Gosia
* Push-button controls, optional pop-up guidance and guided prompts
* A searchable help function
* Undo/Redo of most functions and crash recovery

Using Rachel, the user will be able to build a level scheme from either a hand-written text file and/or a Radware AGS file, define the experimental setup and import relative-efficiency-corrected gamma-ray data from Rachel-format text and/or AGS files. The matrix and fit parameters can be defined by push-buttons and prompts or imported from a Rachel-format matrix file. Gosia will then be run by push-button GUI controls. Most prompts will be preceded by help information, suggestions, or warnings.

For experiments that fit the capabilities above, the user can view the Gosia inputs to learn the format, but will not be required to type any input code. Experienced Gosia users can export a GUI-generated input skeleton file and abandon the GUI to use the more advanced capabilities of Gosia.

==Upgrade strategy==

Upgrades are being made to incorporate all of the capabilities of Gosia, with a focus on the most commonly used features. Prioritization of the upgrades eventually will be directed primarily by [[software upgrade voting|votes]] cast by the user community. Users are encouraged to submit requested upgrades to handle present features of Gosia that are not already included, ''as well as new functions that Gosia does not handle, but which could be incorporated via the GUI.''

This voting plan has not been implemented yet. Users are encouraged to suggest desired upgrades through the Forum or the [[rachel_desired_upgrades | desired upgrades]] page to steer the software development.

===Planned upgrades===

There are a number of planned upgrades, many of which have already been added to versions 1.0 and later. The upgrade plan and priorities will be changed based on user feedback and bug reports.

# More accurate stopping power calculations for low-Z beams.
# Improved graphics including
## a transition from matplotlib graphics to pyGtk in the level scheme window
## clickable objects in the level scheme diagram
# Addition of Ge clusters with libraries of array geometries (Gammasphere, Agata, Miniball etc.)
# Plot functions to visualize fit conflicts in the data
# Improved object structure for Ge detectors. This will reduce the burden on the user by automatically updating the data set passed to Gosia as the level scheme and matrix change.
# Optional setting of symbolic matrix definitions, whereas now the matrix is stored numerically. This will allow greater user control by allowing tuning of model parameters, e.g. <gam|E2|gsb> = M1 + a*M2, where 'a' can be adjusted by the user.
# Optional simple distributed processing of some functions. This will allow the user to set a maximum number of independent processes to speed up separable calculations (integrated yields, corrected yields and experiment simulations) by issuing a separate call to Gosia for each process<ref>True distributed computing is not handled by the current version of Gosia</ref>.

==Videos, manual and run-time help==

===Quick advertising and demos===

[http://www.pas.rochester.edu/~hayes/beta_rachel/main_ad.html The Rachel advertising video]

[http://www.pas.rochester.edu/~hayes/beta_rachel/calculation_in_2_minutes.html Fast setup of Gosia calculations]

===Help with Rachel on this Wiki===

Use the search function to the left, or start here.

[[rachel_selected_topics | Selected help topics for Rachel]]

===Tutorial videos===

[[rachel_1.0_tutorial_videos | New Tutorial videos]] are being produced for version 1.0. These will be much shorter and more focused than the old videos.

You can still watch [[rachel_beta_tutorial_videos | beta-version tutorial videos]], but there have been many changes. General procedures are similar. These old videos contain more topics per video, so some are quite long.

===The manual===

The Rachel manual has been incorporated into the [[Gosia_Manual | Gosia manual]].

===Other help resources===

Run-time help is available using the Help button. Users are encouraged to submit suggestions for additional help data.

===Experiment planning and accuracy testing tools===

The simulation tools have been improved since the recording of these video tutorials. The user will find extra prompts for the details of the planned beam run, and estimated absolute measured counts will be calculated and displayed. The display format looks like the following:

<pre>
Experiment 1
Target excitation by Z,A = 54,136 at 517 MeV. Mean scattering angle = 45.0 deg.
Detector 1
Single crystal at theta, phi = 45.0, 45.0 deg. Solid angle = 0.06 sr.
This simulation does not include random gaussian scatter. Counts represent the cross sections calculated by Gosia.
Transition | Gammas incident | Fraction of | Observed Counts
| on Ge detectors | Gamma Incident |
Initial Final | | Energy **Detector Gammas |
Band Spin Band Spin | Counts *Error | (keV) Efficiency Detected | Rate(Hz) Counts ***Error
-------------------------------------------------------------------------------------------------------------------------
gsb 1.5 gsb 0.5 4.662e+06 2.332e+05 100.0 0.00049 0.09962 1.075e+00 4.644e+05 6.815e+02
gsb 2.5 gsb 0.5 1.570e+07 7.848e+05 200.0 0.00179 0.36853 1.339e+01 5.784e+06 2.405e+03
a 2.5 gsb 0.5 1.079e+04 5.647e+02 250.0 0.00189 0.38907 9.719e-03 4.199e+03 6.480e+01
a 2.5 gsb 1.5 9.816e+02 7.705e+01 150.0 0.00135 0.27823 6.322e-04 2.731e+02 1.653e+01
a 2.5 b 3.5 4.689e+05 2.376e+04 75.0 0.00015 0.0312 3.387e-02 1.463e+04 1.210e+02
</pre>

The "Observed Counts" are calculated using the efficiency curve from the detector library or a detector created by the user. The "Detector Efficiency" <math>\epsilon</math> is the usual definition. Possion counting errors are based on the observed counts, while additional error on the ''total'' efficiency-corrected counts may be added by the user.

Refer to the page [[Rachel_simulated_yield_output | Rachel simulated yield output]] for more information about simulations with the GUI.

===Troubleshooting===

For troubleshooting help, refer to the [[rachel_troubleshooting | troubleshooting]] page, or use the search box at the left.

==Bug reports==

Check the [[gui_release_notes | release notes]] page for a history of bugs and bug-fix versions.

Users are encouraged to submit bug reports via the [http://www-user.pas.rochester.edu/~gosia/phpBB3/ Gosia forum]. The operation that revealed the bug should be reported, and the session file saved before this operation should be included if possible.

==Links==

[http://www.pas.rochester.edu/~hayes/beta_rachel/main_ad.html The Rachel advertising video]

==Notes==

<references/>

Rachel GUI

2012-11-05T18:20:15Z

Gosia: /* General */ Added use of the compile-all.sh script

==General description==

[[File:Guisnapshot.png|thumb|right|A snapshot of the alpha version GUI.]]

For a very short video demo of capabilities, refer to the "advertising video": [http://www.pas.rochester.edu/~hayes/beta_rachel/main_ad.html The Rachel advertising video]

The Rachel interface facilitates [http://www.pas.rochester.edu/~hayes/beta_rachel/calculation_in_2_minutes.html fast setup of Gosia calculations] and data analysis using push-button controls with guided input and 'plain language' warnings during setup. Rachel is written in Python 2.6 and is expected to be Python 2.7 compliant. It runs under Linux and Unix (OS X) machines. A Windows version is not planned.

A 64-bit processor is essential, because Gosia runs fastest and most accurately on 64-bit machines. Versions 1.* have many structural changes in the code, allowing more automation, more general particle detector options and fewer user prompts for standard operations.

[[File:Typicalgosiainput.png|thumb|right|Excerpt of a typical Gosia input for a collective system.]]While gosia.20081208 incorporates the [[OP,BRIC]] command to read internal conversion data from BrIcc data files, removing the burden of entering ICC interpolation data by the user, the GUI allows the greatest possible automation by prompts for pre-defined or user-defined germanium detector crystals or arrays, calculation of Zeigler stopping power data, optimum meshpoint selection for yield calculations, transformation of rectilinear detector definition to laboratory-frame spherical-polar interpolation coordinates, etc. For standard problems, the burden on the user is reduced to entering nuclear level and matrix data for simulations (including optional data-set simulation) and real experimental data for fitting of matrix elements. For collective systems, where the matrix definition often includes several hundred lines of matrix elements, rotor parameters can be given to reduce the setup time for the initial guesses of matrix element values. This also eliminates the need for the user to re-index the reduced matrix elements by hand as changes are made to the matrix or level scheme.

==How to get the Rachel package==

Release version 1.1.5 is now available. This version does not read beta-version files, but level schemes and matrices can be ported following the instructions in the 2012 version of the Gosia manual. Refer to the [[gui_release_notes | release notes]] for the change in this version and known issues.

[http://www.pas.rochester.edu/~hayes/rachel_1/rachel_1.1.5.tar Rachel 1.1.5 download]

==Version notes==

The [[Gui_release_notes | version notes page]] gives a history of Rachel updates. Known issues are given for each version, as well as the current version.

==Installation notes==

===General===

A script was added by Mitch Allmond that compiles and sets up Rachel, Gosia and Elast in one step. First, un-tarthe distribution:

<pre>
% tar -xvf rachel_distribution_1.3.0.tar
</pre>

or similar for the correct version number. Move into the new Rachel directory and run compile-all.sh:

<pre>
% cd rachel_distribution_1.3.0
% ./compile-all.sh
</pre>

You will be prompted if any previous setup information needs to be overwritten.

Rachel has been installed successfully on a number of Linux and OS X systems. Most problems are related to the level scheme graphics. Refer to ----- for remedies. You can view or submit detailed installation notes for any particular operating system. (Please link them to a separate Wiki page.)

If the default python environment set in the rachel.py executable is not appropriate, the following error will appear:

<pre>
% [path].rachel.py
/usr/bin/env: python2.6: No such file or directory
%
</pre>

The correct Python environment can be invoked by typing instead:

<pre>
% [python] [path].rachel.py
</pre>

where [python] is the Python executable with the correct path and [path] is the path to the rachel.py executable where the user installed it.

===Installation notes for other Linux/Unix systems===

* [[rachel_installation_ubuntu | Ubuntu]]
* [[rachel_installation_open_suse | OpenSuse]]
* [[rachel_installation_fedora | Fedora]]
* [[rachel_installation_mac_os_x | Mac OS X]]

The final tests that all necessary libraries and codes are installed are usually the following:

* Load a level scheme and see that the level scheme window is drawn properly. Rarely, after loading a level scheme with no errors (e.g. using one of the example files included in the Rachel distribution), the user must click "Examine fig. window" once to create the level scheme window. On most systems, with the correct libraries installed, the level scheme display pops up when a valid level scheme is loaded with no errors. If the GUI starts and can load and draw the level diagram without errors, then it is unlikely that there are any missing libraries. Also note that on some systems the matplotlib back-end must be changed. This is done by editing the <tt>~/.matplotlib/matplotlibrc</tt> file so that the back-end line reads

<pre>
backend : [backend]
</pre>

where <tt>[backend]</tt> may be one of several back-ends described here: [http://matplotlib.sourceforge.net/faq/installing_faq.html#backends matplotlib backends]. Usually <tt>TkAgg</tt> works except on Mac OS X. Refer to [[rachel_installation_mac_os_x | Mac OS X]].

* After running a calculation ("integration"), test the yield-plotting feature using the "Plot yields" button. If there is an error finding gnuplot, install gnuplot on the system so that it is in the user's path, i.e., that it can be invoked by typing "gnuplot" at the terminal prompt.

==GUI version backward compatibility==

In the beta versions, the GUI preserves backward-compatibility of the saved session files, so that users can upgrade the GUI without having to rebuild the session.

When changing to version 1.0 or later, users will have to rebuild their sessions, because of major changes in the internal structure that cannot be automatically upgraded. This can be aided by the export/import tools for the level and matrix data. Subsequent versions will have the automatic upgrading reinstated.

==Capabilities of version 1==

Note that there are major simplifications in the Ge detector array setup and data loading.

* Human-readable data files that are robust for changes in the experimental setup and level scheme
* Azimuthally symmetric particle detection
* Partitioning particle-detector data by azimuthal angle
* Graphical definition of rectilinear or irregular-shaped particle detectors [[File:rectilineardetectorexample.png|thumb|right|A user-defined rectilinear detector automatically transformed into the laboratory spherical polar coordinates for Gosia. Black edge is the "exact" shape; red lines are the azimuthal range samples passed to Gosia.]]
* 4pi experiments (e.g. experiments with no particle detection)
* Normal or inverse kinematics experiments
* A user-expandable library of standard Ge crystals e.g. Gammasphere
* A user-expandable library of detector arrays (Tigress, Miniball, Gammasphere...)
* Data from summed 4pi arrays
* Efficiency-corrected gamma-ray data only
* Experiment planning aids
** Generation of simulated data based on a proposed beam run
** Optional quasi-Gaussian random scatter in simulated data
** Estimated precision of the proposed measurement
* Accuracy testing to determine if Gosia will be appropriate for a planned experiment
* Fitting and correlated error estimations
* Reading level schemes and gamma-ray data from Radware AGS files and [[Rachel_yield_data_files | Rachel text format]] including
** Branching ratio data
** Previously measured EM matrix elements, including the measured phases
** Lifetime data for ''excited states'' (not the ground state lifetime)
** Mixing ratios
* Several supported data file formats
** [Radware] AGS format
** [[Rachel format nuclear data files]]
** Gosia format (experimental yield and fitted matrix element data)
* Instantly generating plots of experimental vs. predicted yields via gnuplot [[File:plottingexample.png|thumb|right|A zoomed view of a plot of yield vs. spin in a rotational band generated from the Gosia output and experimental data.]]
* Automated generation of stopping power and internal conversion input for Gosia
* Push-button controls, optional pop-up guidance and guided prompts
* A searchable help function
* Undo/Redo of most functions and crash recovery

Using Rachel, the user will be able to build a level scheme from either a hand-written text file and/or a Radware AGS file, define the experimental setup and import relative-efficiency-corrected gamma-ray data from Rachel-format text and/or AGS files. The matrix and fit parameters can be defined by push-buttons and prompts or imported from a Rachel-format matrix file. Gosia will then be run by push-button GUI controls. Most prompts will be preceded by help information, suggestions, or warnings.

For experiments that fit the capabilities above, the user can view the Gosia inputs to learn the format, but will not be required to type any input code. Experienced Gosia users can export a GUI-generated input skeleton file and abandon the GUI to use the more advanced capabilities of Gosia.

==Upgrade strategy==

Upgrades are being made to incorporate all of the capabilities of Gosia, with a focus on the most commonly used features. Prioritization of the upgrades eventually will be directed primarily by [[software upgrade voting|votes]] cast by the user community. Users are encouraged to submit requested upgrades to handle present features of Gosia that are not already included, ''as well as new functions that Gosia does not handle, but which could be incorporated via the GUI.''

This voting plan has not been implemented yet. Users are encouraged to suggest desired upgrades through the Forum or the [[rachel_desired_upgrades | desired upgrades]] page to steer the software development.

===Planned upgrades===

There are a number of planned upgrades, many of which have already been added to versions 1.0 and later. The upgrade plan and priorities will be changed based on user feedback and bug reports.

# More accurate stopping power calculations for low-Z beams.
# Improved graphics including
## a transition from matplotlib graphics to pyGtk in the level scheme window
## clickable objects in the level scheme diagram
# Addition of Ge clusters with libraries of array geometries (Gammasphere, Agata, Miniball etc.)
# Plot functions to visualize fit conflicts in the data
# Improved object structure for Ge detectors. This will reduce the burden on the user by automatically updating the data set passed to Gosia as the level scheme and matrix change.
# Optional setting of symbolic matrix definitions, whereas now the matrix is stored numerically. This will allow greater user control by allowing tuning of model parameters, e.g. <gam|E2|gsb> = M1 + a*M2, where 'a' can be adjusted by the user.
# Optional simple distributed processing of some functions. This will allow the user to set a maximum number of independent processes to speed up separable calculations (integrated yields, corrected yields and experiment simulations) by issuing a separate call to Gosia for each process<ref>True distributed computing is not handled by the current version of Gosia</ref>.

==Videos, manual and run-time help==

===Quick advertising and demos===

[http://www.pas.rochester.edu/~hayes/beta_rachel/main_ad.html The Rachel advertising video]

[http://www.pas.rochester.edu/~hayes/beta_rachel/calculation_in_2_minutes.html Fast setup of Gosia calculations]

===Help with Rachel on this Wiki===

Use the search function to the left, or start here.

[[rachel_selected_topics | Selected help topics for Rachel]]

===Tutorial videos===

[[rachel_1.0_tutorial_videos | New Tutorial videos]] are being produced for version 1.0. These will be much shorter and more focused than the old videos.

You can still watch [[rachel_beta_tutorial_videos | beta-version tutorial videos]], but there have been many changes. General procedures are similar. These old videos contain more topics per video, so some are quite long.

===The manual===

The Rachel manual has been incorporated into the [[Gosia_Manual | Gosia manual]].

===Other help resources===

Run-time help is available using the Help button. Users are encouraged to submit suggestions for additional help data.

===Experiment planning and accuracy testing tools===

The simulation tools have been improved since the recording of these video tutorials. The user will find extra prompts for the details of the planned beam run, and estimated absolute measured counts will be calculated and displayed. The display format looks like the following:

<pre>
Experiment 1
Target excitation by Z,A = 54,136 at 517 MeV. Mean scattering angle = 45.0 deg.
Detector 1
Single crystal at theta, phi = 45.0, 45.0 deg. Solid angle = 0.06 sr.
This simulation does not include random gaussian scatter. Counts represent the cross sections calculated by Gosia.
Transition | Gammas incident | Fraction of | Observed Counts
| on Ge detectors | Gamma Incident |
Initial Final | | Energy **Detector Gammas |
Band Spin Band Spin | Counts *Error | (keV) Efficiency Detected | Rate(Hz) Counts ***Error
-------------------------------------------------------------------------------------------------------------------------
gsb 1.5 gsb 0.5 4.662e+06 2.332e+05 100.0 0.00049 0.09962 1.075e+00 4.644e+05 6.815e+02
gsb 2.5 gsb 0.5 1.570e+07 7.848e+05 200.0 0.00179 0.36853 1.339e+01 5.784e+06 2.405e+03
a 2.5 gsb 0.5 1.079e+04 5.647e+02 250.0 0.00189 0.38907 9.719e-03 4.199e+03 6.480e+01
a 2.5 gsb 1.5 9.816e+02 7.705e+01 150.0 0.00135 0.27823 6.322e-04 2.731e+02 1.653e+01
a 2.5 b 3.5 4.689e+05 2.376e+04 75.0 0.00015 0.0312 3.387e-02 1.463e+04 1.210e+02
</pre>

The "Observed Counts" are calculated using the efficiency curve from the detector library or a detector created by the user. The "Detector Efficiency" <math>\epsilon</math> is the usual definition. Possion counting errors are based on the observed counts, while additional error on the ''total'' efficiency-corrected counts may be added by the user.

Refer to the page [[Rachel_simulated_yield_output | Rachel simulated yield output]] for more information about simulations with the GUI.

===Troubleshooting===

For troubleshooting help, refer to the [[rachel_troubleshooting | troubleshooting]] page, or use the search box at the left.

==Bug reports==

Check the [[gui_release_notes | release notes]] page for a history of bugs and bug-fix versions.

Users are encouraged to submit bug reports via the [http://www-user.pas.rochester.edu/~gosia/phpBB3/ Gosia forum]. The operation that revealed the bug should be reported, and the session file saved before this operation should be included if possible.

==Links==

[http://www.pas.rochester.edu/~hayes/beta_rachel/main_ad.html The Rachel advertising video]

==Notes==

<references/>

Gui release notes

2012-11-05T18:11:38Z

Gosia: Added v 1.3.0

These versions are listed from newest to oldest.

=Versions 1.x=

==Version 1.3.0==

===Description===

New features: Thick-target calculations are now fully-automated. The user is prompted if the thick target requires extra consideration, whereas, in older versions, the user would get error messages and have to fix it herself.

===Changes===

* Thick target calculations are now fully-automated
* Lifetime calculations are now fully-automated (one-click)
* Vacuum deorientation calculations are now fully-automated and can be run at any time when the experimental setup is complete.
* Tab-completion of filenames and paths
* Improved reading of AGS level schemes that are missing spin/parity assignments
* The assumed Q-value is lowered automatically when the projectile energy is too low

====Bug-fixes====

Fixed a bug that used the wrong kinematic solution for inverse kinematics in some fits. This caused inaccuracy in finding the minimum in some cases.

Errors are more graceful if the user tries to perform an operation before setup is complete.

The splash screen now renders properly.

===Known bugs and issues===

In all versions, it is possible to save an empty session over an existing session. Frequent backups of the working directory should be made.

This version is not backward-compatible with the beta versions; users must re-define the experimental
definitions. Level and matrix data CAN be exported from beta versions and imported to this version. All
later versions are expected to preserve backward compatibility with version 1.2.0
Plots of collision functions cannot be generated for all states.

===Recommendations===

To migrate from a beta version to version 1.1.4, export the level scheme and matrix, then import them into a
new session in this version.

==Version 1.2.0==

===Description===

===Changes===

The normalization of calculated yields to experimental yields in the GUI now matches the normalization used by Gosia. The previous Rachel versions weighted yields by their fractional errors when calculating the normalizations. This can make plotting and understanding the chi-squared values confusing. For example, when low-intensity gamma-ray yields are poorly reproduced, the high-intensity yields can appear to be poorly reproduced.

The new method in version 1.2.0 weights the individual yields' contributions to the normalization factor by their intensity only.

This version is backward-compatible with all versions 1.0 and later.

See version 1.0.

====Bug-fixes====

===Known bugs and issues===

In all versions, it is possible to save an empty session over an existing session. Frequent backups of the working directory should be made.

This version is not backward-compatible with the beta versions; users must re-define the experimental
definitions. Level and matrix data CAN be exported from beta versions and imported to this version. All
later versions are expected to preserve backward compatibility with this version.
Plots of collision functions cannot be generated for all states.

===Recommendations===

To migrate from a beta version to version 1.2.0, export the level scheme and matrix, then import them into a
new session in this version.

==Version 1.1.5==

===Description===

This version is backward-compatible with all versions 1.0 and later.

See version 1.0.

===Changes===

None

====Bug-fixes====

A bug that affected only the fitting and corrected yield calculations has been fixed. Occasionally, but not always, this bug resulted in incorrect yield data being passed to Gosia using the "Write Gosia yld file" button, which would affect fitting. It did not affect integrated yield calculations, simulations or plotting, and the integrated yield function still gave the correct chi-squared value.

See the recommendations section below.

===Known bugs and issues===

In all versions to date, the sensitivity map (OP,MAP) is calculated in the same Gosia call that does a fit (OP,MINI). This works in most cases, but it may cause errors occasionally in inverse-kinematics calculations. (This is not confirmed, but the error will be reported if it occurs.) The sensitivity map will be calculated in a separate call in the next bug-fix version.

Level schemes that do not have spins in order of increasing energy within a band, e.g. 1-, 0-, 3-, 2-..., will cause errors in generating the Gosia input, and the full yield data set may not be passed to Gosia for fitting matrix elements. The expected date for the bug fix is not known. In the meantime, separate each state to a separate band. (It may be sufficient to separate the ground state and put it in band #1, then put all remaining states in another band.) Be sure to check the K values that the GUI has assumed and normalization constants for the Alaga rule compared to the in-band rotor model.

In all versions, it is possible to save an empty session over an existing session. Frequent backups of the working directory should be made.

This version is not backward-compatible with the beta versions; users must re-define the experimental
definitions. Level and matrix data CAN be exported from beta versions and imported to this version. All
later versions are expected to preserve backward compatibility with this version.
Plots of collision functions cannot be generated for all states.

===Recommendations===

Refer to the bug-fix above. To correct possible errors in prior fits, do the following 'if a fit has been performed'.
No corrections are needed if a fit has not been performed with an earlier version.

# Rewrite the Gosia yield file using the button "Write Gosia yld file."
# Re-run the "Make corrected yields" calculation.
# Re-run the "Fit" calculation.
# Re-run any error calculations that have been done.
# Before comparing experimental yields to calculated yields (plotting, etc.), re-run "Integrated yields" to update the calculated yields for the new matrix elements.
# Save the session.

The new fitted matrix elements can be compared to previous calculations to see if the bug had affected fits.

To migrate from a beta version to this version, export the level scheme and matrix, then import them into a
new session in this version.

==Version 1.1.4==

===Description===

This version is backward-compatible with all versions 1.0 and later.

See version 1.0.

===Changes===

The user must now answer "y" or "n" when asked whether to save the session upon exiting. This helps to prevent accidentally overwriting the session file.

====Bug-fixes====

All yield data are properly displayed when plotting yields for merged bands.

Some previous versions did not parse comments properly in detector array files has been fixed. This bug had made it impossible to import a few of the array files that come with the Rachel package.

===Known bugs and issues===

In all versions, it is possible to save an empty session over an existing session. Frequent backups of the working directory should be made.

This version is not backward-compatible with the beta versions; users must re-define the experimental
definitions. Level and matrix data CAN be exported from beta versions and imported to this version. All
later versions are expected to preserve backward compatibility with version 1.1.4.
Plots of collision functions cannot be generated for all states.

===Recommendations===

To migrate from a beta version to version 1.1.4, export the level scheme and matrix, then import them into a
new session in this version.

==Version 1.1.3==

===Known bugs and issues===

''The following bug affects the plotting function, but does not affect the accuracy of calculations.''

In some cases, plots of gamma-ray yields will not show all of the data for merged bands. For example, if odd-spin states in band "b" are merged into the even spin states of band "a," a plot of the yield data for the merged band "a" may not show the yields from the states of the original band "b."

In all versions, it is possible to save an empty session over an existing session. Frequent backups of the working directory should be made.

This version is not backward-compatible with the beta versions; users must re-define the experimental
definitions. Level and matrix data CAN be exported from beta versions and imported to this version. All
later versions are expected to preserve backward compatibility with version 1.1.3.
Plots of collision functions cannot be generated for all states.

===Description===

See version 1.0.

====Bug-fixes====

It is now possible to add in-band matrix elements of any multipolarity that conserves parity, i.e., E2, E4, E6 and M1. There was no accuracy error associated with this bug.

===Recommendations===

To migrate from a beta version to version 1.1.3, export the level scheme and matrix, then import them into a
new session in this version.

==Version 1.1.2==

===Known bugs and issues===

In all versions, it is possible to save an empty session over an existing session. Frequent backups of the working directory should be made.

This version is not backward-compatible with the beta versions; users must re-define the experimental
definitions. Level and matrix data CAN be exported from beta versions and imported to this version. All
later versions are expected to preserve backward compatibility with version 1.1.2.
Plots of collision functions cannot be generated for all states.

===Description===

See version 1.0.

====Bug-fixes====

A bug that sometimes caused the deorientation coefficient calculation to fail has been fixed. Calculations were accurate in previous versions, but sometimes could not be read from the Gosia output.

===Recommendations===

To migrate from a beta version to version 1.1.2, export the level scheme and matrix, then import them into a
new session in this version.

==Version 1.1.1==

===Known bugs and issues===

In all versions, it is possible to save an empty session over an existing session. Frequent backups of the working directory should be made.

This version is not backward-compatible with the beta versions; users must re-define the experimental
definitions. Level and matrix data CAN be exported from beta versions and imported to this version. All
later versions are expected to preserve backward compatibility with version 1.1.
Plots of collision functions cannot be generated for all states.

===Description===

See version 1.0.

====Bug-fixes====

A bug that sometimes prevented correlated errors from being read from the Gosia output has been fixed.

===Recommendations===

To migrate from a beta version to version 1.1.1, export the level scheme and matrix, then import them into a
new session in this version.

==Version 1.1==

===Known bugs and issues===

In all versions, it is possible to save an empty session over an existing session. Frequent backups of the working directory should be made.

This version is not backward-compatible with the beta versions; users must re-define the experimental
definitions. Level and matrix data CAN be exported from beta versions and imported to this version. All
later versions are expected to preserve backward compatibility with version 1.1.
Plots of collision functions cannot be generated for all states.

The "fully-automatic" loading of yield data reports Ge detector numbers that are 1 larger than the correct number. This is misleading but does not cause any accuracy errors.

===Description===

See version 1.0

====Bug-fixes====

A bug in adding interband matrix elements is fixed. Version 1.0 did not include all allowed couplings.

===Recommendations===

To migrate from a beta version to version 1.1, export the level scheme and matrix, then import them into a
new session in this version.

==Version 1.0==

===Known bugs and issues===

In all versions, it is possible to save an empty session over an existing session. Frequent backups of the working directory should be made.

This version is not backward-compatible with the beta versions; users must re-define the experimental
definitions. Level and matrix data CAN be exported from beta versions and imported to this version. All
later versions are expected to preserve backward compatibility with version 1.0.
Plots of collision functions cannot be generated for all states.

The "fully-automatic" loading of yield data reports Ge detector numbers that are 1 larger than the correct number. This is misleading but does not cause any accuracy errors.

===Description===

Faster setup of calculations.

Defining complicated detector arrays can be done in one operation.

A library of detector types and arrays is included.

Loading of all experimental yield data can be done in one operation.

Simulations now use the standard definition of Ge efficiency.

Simulated yield tables are clearer.

Stopping power and exit energy are calculated by Elast automatically.

The Rochester SRIM server can be called for more accurate stopping power data.

Thick-target experiments are handled accurately, including backscatter detection from the surface.

The correction to the gamma angular distribution now includes the motion of the emitting nucleus.

Deorientation coefficients and lifetimes can be calulated in a few seconds.

====Bug-fixes====

Merging, deleting and reordering of bands are allowed at any time.

Any number of bands can be merged. (See restrictions regarding duplicate spin states and different-parity
states in one band.)

Malfunctions during plotting of yield data are fixed. The overall normalization for all data sets is now
used in plots comparing measured and predicted yields.

The reported chi-squared values are properly-weighted on plots and in reports. (Chi-squared and
normalization was done correctly in fits in all versions.)

It is no longer necessary to reload yield data after changing the level scheme, unless new states are
added.

===Recommendations===

To migrate from a beta version to version 1.0, export the level scheme and matrix, then import them into a
new session in this version.

=Beta Versions=

==Version 2.0.8.beta==

===Known bugs and issues===

The GUI allows only simple changes to the level scheme after the matrix and experiment have been defined (adding and deleting of bands). The release candidate (expected September 2011) has the ability to merge and reorder bands at any time.

If the level scheme is changed after calculated or experimental yield data are in memory, the user must reload the experimental data and generate new calculated yields. This has been fixed in the release candidate version (expected September 2011).

===Description===

This version uses a more accurate estimate of a typical Ge detector's ''intrinsic'' efficiency (based on Gammasphere's efficiency) to give approximate "raw" count rates. The total counts (for 100% efficienct detectors) were found to agree with perturbation calculations for weakly-coupled two-state systems, where the perturbation method is accurate.

Refer to the recommendations section if you are working with simulated yield data.

This version preserves the same backward compatibility with older session files as did version 2.0.6.beta.

This is expected to be the last beta release before a significantly upgraded release version expected in July.

===Recommendations===

If you are working with simulated data, refer to the page [[Rachel_simulated_yield_output | Rachel simulated yield output]] for a description of the new output format and the meaning of terms.

==Version 2.0.7.beta==

===Known bugs and issues===

None

===Description===

This is a bug-fix version relative to 2.0.6.beta.

# The simulated yield data are now updated properly.
# The simulated data now include the proper Ge detector solid angle factor. Simulated yield data are corrected by dividing the simulated raw counts by a factor of <math>\epsilon \Delta\Omega_\gamma</math>, where <math>\epsilon</math> is the approximate intrinsic efficiency (<math>0<\epsilon <1</math>) and <math>\Delta\Omega_\gamma</math> is the solid angle subtended by the Ge detector. In previous Rachel versions, the absence of the solid angle factor would cause a systematic disagreement between Ge detectors only if they subtended different solid angles.

Refer to the recommendations section if you are working with simulated yield data.

This version preserves the same backward compatibility with older session files as did version 2.0.6.beta.

This is expected to be the last beta release before a significantly upgraded release version expected in July.

===Recommendations===

If you are not working with simulated data, no corrections are needed.

ONLY if simulated data are in use, re-run the simulated data calculation. Answer "yes" to the prompt to re-integrate the yield data.

==Version 2.0.6.beta==

===Known bugs and issues===

When calculating simulated yields, the new simulated yield data in session (and saved session file) will not be updated unless the user answers "y" to the prompt "Re-integrate the predicted yields? [Y/n]:" This may or may not affect subsequent fits to the simulated data, depending on the changes to the matrix, experimental parameters, detector arrangements, etc. The new simulated data are written correctly to the terminal and to the gosia yield file, so fits would not be affected, but a large disagreement between simulated data and calculated yields could appear on plots. ''Remedy: always choose to re-integrated the yields when calculating simulated yield data.''

===Description===

This is a bug-fix version relative to 2.0.5.beta.

Refer to the notes for "Version 2.0.5.beta" below for the details of the bug fix and the recommended solution to update your session files.

This version preserves the same backward compatibility with older session files as did version 2.0.5.beta.

This is expected to be the last beta release before a significantly upgraded release version expected in July.

===Recommendations===

After replacing an older version of Rachel with this version, re-integrate the calculated yields in memory by selecting "Integrated yields" and "Run gosia input" and clicking "Go." This will update the calculated yields and overwrite any erroneous calculated yields that may be in memory from the bug.

==Version 2.0.5.beta==

===Known bugs and issues===

The bug in version 2.0.4.beta is still not completely fixed. See below. A new version will be released probably in mid-June 2011. Refer to this post in the Gosia forum to see how to correct for the bug:

[http://www-user.pas.rochester.edu/~gosia/phpBB3/viewtopic.php?f=9&t=9 Forum post on correcting for the bug]

===Description===

This is a bug-fix version relative to 2.0.4.beta, and some user prompts and output information is clarified.

The GUI now correctly informs you of the choices of kinematic solutions for inverse kinematics cases. The safe energy is reported before asking for the initial beam energy.

Refer to the notes for "Version 2.0.4.beta" below for the details of the bug fix and the recommended solution to update your session files.

This version preserves the same backward compatibility with older session files as did version 2.0.4.beta.

This is expected to be the last beta release before a significantly upgraded release version expected in July.

==Version 2.0.4.beta==

===Known bugs and issues===

This version has one known bug: if the user selects "View gosia input" or "Save gosia input" for some types of calculations, such as "Integrated yields," inaccurate point yields would be stored in memory after the operation. This could be more or less apparent, depending on how accurate the point-scattering approximation is for the experiments defined. The absolute cross sections then reported on plots could then be extremely inaccurate.

After running "Integrated yields" with "Run gosia input" selected, the calculated yields and absolute cross sections on plots would (again) be accurate.

This bug does not affect real yield data or simulated yield data. This bug would not affect fitting of matrix elements, since the ''corrected'' yields used by Gosia are stored in an external file only.

====Remedies====

# Upgrade to version 2.0.5.beta.
# Re-run the "Integrated yields" calculation to store accurately-calculated yields in memory. (Save the session.) This will update all calculated data in memory and on plots.

Gosia

2012-11-05T17:55:12Z

Gosia: /* Downloads */ fixed rachel download link

Follow @GosiaCoulex on [http://twitter.com/#!/GosiaCoulex Twitter] for new version announcements and bug-fixes.

Gosia is the primary analysis code for planning experiments and analyzing data for nuclear structure physics using [[low-energy Coulomb excitation]] experiments. It is suited for both planning experiments and analysis of Coulomb excitation data. The original version was written at the University of Rochester in 1979--1980 by [[Tomasz Czosnyka]], [http://www.pas.rochester.edu/~cline/ D. Cline] and [http://www.turpion.org/links/ca4ad02e0d0fafd70a31c549cf4b3c4c_0.phtml C.Y. Wu]. T. Czosnyka maintained the code until his untimely death in 2006. [[What_is_Gosia | Learn more...]].

==What Gosia can do for the experimenter==

===Experiment planning and simulation===

The GOSIA suite of codes are ideally suited to the design and planning of
heavy-ion induced Coulomb excitation experiments as well as the subsequent
analysis. Coulomb excitation experiments can seem deceptively simple,
especially for few-state problems, leading some experimenters to fall into
analysis traps or collecting data that have less than optimal sensitivity to
the goals of the experiment. The [[experiment_planning | Experiment planning]] page identifies potential pitfalls
in the design and analysis of Coulomb excitation experiments.

===Analysis of Coulomb excitation data===

The motivation for development of Gosia was to
implement the capability to extract measured
<math>E\lambda</math>
matrix elements model-independently from Coulomb excitation data. The first
major task required to achieve this goal was to design experiments covering a
wide dynamic range of Coulomb excitation strength that provide sufficient
experimental data to overdetermine the many unknown matrix elements.
Experimental techniques were developed to achieve this requirement in the
1980's and primarily involved Coulomb excitation measurements over a wide
range of both scattering angle and unexcited nucleus
<math>Z</math> value. The second major task was the development of Gosia to
model-independently extract the matrix elements via a least-squares search of
the data. During the 1980's and early 1990's the ready availability of beam
time at heavy-ion accelerator facilities, the availability of high-efficiency
<math>p-\gamma</math> detector facilities, and access to fast computer systems needed for the Gosia
least-squares searches, enabled the first model-independent extraction of
<math>E\lambda</math>
matrix elements from multiple Coulomb excitation data.

[[Model_independent_analysis | Model-independent analysis]]

[[Model_dependent_analysis | Model-dependent analysis]]

==Selected special topics==

Other topics can be found using the search box at the left.

[[common_mistakes | Common mistakes in Gosia calculations]]

[[Integrated_yields | Interpreting the "integrated yields" output]]

[[normalization_of_yield_data | Normalization of gamma-ray yield data]]

==Downloads==

Note that Gosia version numbers are coded as YYYYMMDD.N, where N is a minor update or bug-fix on the original YYYYMMDD version. For example, version 20110524.2 was released on 2011-11-07. ''Some recent releases have an incorrect message "LATEST REVISION- JUNE 2006" in the output file header.''

(Right-click to download source codes.)

* The current version (20120510) of the [http://www.pas.rochester.edu/~cline/Gosia/Gosia_Manual_20120510.pdf Gosia manual]
* The latest release (20110524.2) of [http://www.pas.rochester.edu/%7Ehayes/gosia_versions/gosia_20110524.2.f Gosia]
* The latest release (2_20081208.14) of [http://www.pas.rochester.edu/%7Ehayes/gosia_versions/gosia2_20081208.14.f Gosia2], for analysing simultaneous Coulomb excitation of target and projectile, using a common normalization.
* [http://www.pas.rochester.edu/~hayes/rachel_1/rachel_distribution_1.3.0.tar Rachel release version 1.3.0], the graphical interface for Gosia. See also the [[Gui | Rachel]] page.
* [http://www.pas.rochester.edu/%7Ecline/Research/GOSIAcodes/pawel-06-mod.f Pawel], the Gosia version to treat excitation of a nucleus in an isomer state
* [http://www.pas.rochester.edu/%7Ecline/Research/GOSIAcodes/gosia_arm.for ANNL (Anneal)], a special version of Gosia developed by Rich Ibbotson that uses simulated annealing techniques to locate minima
* [http://www.pas.rochester.edu/%7Ecline/Research/GOSIAcodes/sigma.f Sigma], the 2006 Fortran source code for deducing the quadrupole invariants from the E2 matrix elements determined by Gosia
* [http://www.pas.rochester.edu/%7Ecline/Research/GOSIAcodes/gremlin.f GREMLIN], the gamma-ray detector efficiency code developed for use with GOSIA in 1987 by Alexander Kavka

* The set of [http://www.pas.rochester.edu/~hayes/gosia_downloads/fit_demo_2011.tar demonstration files] to accompany the Gosia tutorial in chapter 14 of the Gosia Manual

==Installing Gosia==

Installation of Gosia requires only the following steps:

# Compiling gosia with a Fortran compiler
# Setting the default path or alias to find Gosia, if desired. (See also the path requirements for [[Gui|Rachel]] and the [[rachel setup file]].)

Most standard Fortran 77 compilers will produce a working Gosia executable. GNU
<tt>g77</tt> is recommended, but is becoming deprecated on newer machines. The newer,
more commonly used <tt>gfortran</tt> will also work. Intel Fortran should work, but is not recommended, because future error trapping patches may not work well with the Intel compiler. For more information about
compiling and standard builds, refer to the page [[compiling gosia | Compiling Gosia]].

== User support ==

===The graphical interface for Gosia===

A [[Gui | GUI (Graphical User Interface) called Rachel]] has been developed. The current version can be found in the download section above. Novice Gosia users can use this interface to develop properly formatted template Gosia input files. These can be modified by comparing the input lines to the Gosia manual instructions, or Gosia can be run entirely from within the GUI for many typical [[simulation (experiment planning)]] and analysis problems.

===Example Gosia input files===

Chapter 14 of the current [[Gosia Manual]] contains an annotated example input, a flowchart of the procedures that must be run during analysis of data and a tutorial based on a set of example files which can be obtained on the [[Gosia_tutorials]] page.

===The Gosia Forum===

The new gosia forum can be found [http://www-user.pas.rochester.edu/~gosia/phpBB3/index.php here.] As described on the [[Gosia_users'_forum]] page, the Forum is the appropriate place to post requests for help with specific Gosia calculations and for experienced users to give answers and advice.

==Maintenance of the Gosia codes==

The Gosia codes are maintained by the [[Gosia_Steering_Committee]].

==Purpose of the Gosia Wiki==

While the Wiki will eventually mirror much of the content of the [http://www.pas.rochester.edu/%7Ecline/Gosia/2011manual20110428.pdf Gosia Manual], the purpose is not to reproduce the manual in its entirety. The Gosia Manual should still be considered the primary reference for running Gosia. The advantage of the Wiki format is that an unlimited number of pages can be added here by interested users on special topics that are not appropriate for a users' manual. These may include

* Examples of Gosia input and output for common calculations, such as
** input file templates
** common detector definitions
** proper data set normalizations
** fitting strategies for systems with many matrix elements
* Solutions for difficult calculations, such as extreme inverse kinematics cases
* More detailed theory notes

* Examples of the use of [[Pawel]], [[ANNL]] and other codes in the Gosia suite

Wiki users are encouraged to contribute anything that should be of general interest to the Gosia user community and to move solved problems from the Forum if they may be of general interest.

==Help for the Wiki user==

Consult the page [[Wiki_formatting]] for basic formatting instructions to contribute to this Wiki.

==Links==

Some of the following pages will be absorbed into the pages on the new Wiki server.

* The [http://www.slcj.uw.edu.pl/en/0.html Warsaw Heavy Ion Laboratory] page and the
* [http://www.slcj.uw.edu.pl/gosia_workshop 2008 Gosia Workshop] at Warsaw
* The [http://www.ikp.uni-koeln.de/~warr/gosia/ Cologne Gosia page]
* and the [http://www.pas.rochester.edu/~cline/Gosia/index.html Rochester Gosia page]

==Notes==

<references/>

Gosia

2012-11-05T17:52:45Z

Gosia: /* Downloads */ Updated to Rachel 1.3.0

Follow @GosiaCoulex on [http://twitter.com/#!/GosiaCoulex Twitter] for new version announcements and bug-fixes.

Gosia is the primary analysis code for planning experiments and analyzing data for nuclear structure physics using [[low-energy Coulomb excitation]] experiments. It is suited for both planning experiments and analysis of Coulomb excitation data. The original version was written at the University of Rochester in 1979--1980 by [[Tomasz Czosnyka]], [http://www.pas.rochester.edu/~cline/ D. Cline] and [http://www.turpion.org/links/ca4ad02e0d0fafd70a31c549cf4b3c4c_0.phtml C.Y. Wu]. T. Czosnyka maintained the code until his untimely death in 2006. [[What_is_Gosia | Learn more...]].

==What Gosia can do for the experimenter==

===Experiment planning and simulation===

The GOSIA suite of codes are ideally suited to the design and planning of
heavy-ion induced Coulomb excitation experiments as well as the subsequent
analysis. Coulomb excitation experiments can seem deceptively simple,
especially for few-state problems, leading some experimenters to fall into
analysis traps or collecting data that have less than optimal sensitivity to
the goals of the experiment. The [[experiment_planning | Experiment planning]] page identifies potential pitfalls
in the design and analysis of Coulomb excitation experiments.

===Analysis of Coulomb excitation data===

The motivation for development of Gosia was to
implement the capability to extract measured
<math>E\lambda</math>
matrix elements model-independently from Coulomb excitation data. The first
major task required to achieve this goal was to design experiments covering a
wide dynamic range of Coulomb excitation strength that provide sufficient
experimental data to overdetermine the many unknown matrix elements.
Experimental techniques were developed to achieve this requirement in the
1980's and primarily involved Coulomb excitation measurements over a wide
range of both scattering angle and unexcited nucleus
<math>Z</math> value. The second major task was the development of Gosia to
model-independently extract the matrix elements via a least-squares search of
the data. During the 1980's and early 1990's the ready availability of beam
time at heavy-ion accelerator facilities, the availability of high-efficiency
<math>p-\gamma</math> detector facilities, and access to fast computer systems needed for the Gosia
least-squares searches, enabled the first model-independent extraction of
<math>E\lambda</math>
matrix elements from multiple Coulomb excitation data.

[[Model_independent_analysis | Model-independent analysis]]

[[Model_dependent_analysis | Model-dependent analysis]]

==Selected special topics==

Other topics can be found using the search box at the left.

[[common_mistakes | Common mistakes in Gosia calculations]]

[[Integrated_yields | Interpreting the "integrated yields" output]]

[[normalization_of_yield_data | Normalization of gamma-ray yield data]]

==Downloads==

Note that Gosia version numbers are coded as YYYYMMDD.N, where N is a minor update or bug-fix on the original YYYYMMDD version. For example, version 20110524.2 was released on 2011-11-07. ''Some recent releases have an incorrect message "LATEST REVISION- JUNE 2006" in the output file header.''

(Right-click to download source codes.)

* The current version (20120510) of the [http://www.pas.rochester.edu/~cline/Gosia/Gosia_Manual_20120510.pdf Gosia manual]
* The latest release (20110524.2) of [http://www.pas.rochester.edu/%7Ehayes/gosia_versions/gosia_20110524.2.f Gosia]
* The latest release (2_20081208.14) of [http://www.pas.rochester.edu/%7Ehayes/gosia_versions/gosia2_20081208.14.f Gosia2], for analysing simultaneous Coulomb excitation of target and projectile, using a common normalization.
* [http://www.pas.rochester.edu/~hayes/rachel_1/rachel_1.3.0.tar Rachel release version 1.3.0], the graphical interface for Gosia. See also the [[Gui | Rachel]] page.
* [http://www.pas.rochester.edu/%7Ecline/Research/GOSIAcodes/pawel-06-mod.f Pawel], the Gosia version to treat excitation of a nucleus in an isomer state
* [http://www.pas.rochester.edu/%7Ecline/Research/GOSIAcodes/gosia_arm.for ANNL (Anneal)], a special version of Gosia developed by Rich Ibbotson that uses simulated annealing techniques to locate minima
* [http://www.pas.rochester.edu/%7Ecline/Research/GOSIAcodes/sigma.f Sigma], the 2006 Fortran source code for deducing the quadrupole invariants from the E2 matrix elements determined by Gosia
* [http://www.pas.rochester.edu/%7Ecline/Research/GOSIAcodes/gremlin.f GREMLIN], the gamma-ray detector efficiency code developed for use with GOSIA in 1987 by Alexander Kavka

* The set of [http://www.pas.rochester.edu/~hayes/gosia_downloads/fit_demo_2011.tar demonstration files] to accompany the Gosia tutorial in chapter 14 of the Gosia Manual

==Installing Gosia==

Installation of Gosia requires only the following steps:

# Compiling gosia with a Fortran compiler
# Setting the default path or alias to find Gosia, if desired. (See also the path requirements for [[Gui|Rachel]] and the [[rachel setup file]].)

Most standard Fortran 77 compilers will produce a working Gosia executable. GNU
<tt>g77</tt> is recommended, but is becoming deprecated on newer machines. The newer,
more commonly used <tt>gfortran</tt> will also work. Intel Fortran should work, but is not recommended, because future error trapping patches may not work well with the Intel compiler. For more information about
compiling and standard builds, refer to the page [[compiling gosia | Compiling Gosia]].

== User support ==

===The graphical interface for Gosia===

A [[Gui | GUI (Graphical User Interface) called Rachel]] has been developed. The current version can be found in the download section above. Novice Gosia users can use this interface to develop properly formatted template Gosia input files. These can be modified by comparing the input lines to the Gosia manual instructions, or Gosia can be run entirely from within the GUI for many typical [[simulation (experiment planning)]] and analysis problems.

===Example Gosia input files===

Chapter 14 of the current [[Gosia Manual]] contains an annotated example input, a flowchart of the procedures that must be run during analysis of data and a tutorial based on a set of example files which can be obtained on the [[Gosia_tutorials]] page.

===The Gosia Forum===

The new gosia forum can be found [http://www-user.pas.rochester.edu/~gosia/phpBB3/index.php here.] As described on the [[Gosia_users'_forum]] page, the Forum is the appropriate place to post requests for help with specific Gosia calculations and for experienced users to give answers and advice.

==Maintenance of the Gosia codes==

The Gosia codes are maintained by the [[Gosia_Steering_Committee]].

==Purpose of the Gosia Wiki==

While the Wiki will eventually mirror much of the content of the [http://www.pas.rochester.edu/%7Ecline/Gosia/2011manual20110428.pdf Gosia Manual], the purpose is not to reproduce the manual in its entirety. The Gosia Manual should still be considered the primary reference for running Gosia. The advantage of the Wiki format is that an unlimited number of pages can be added here by interested users on special topics that are not appropriate for a users' manual. These may include

* Examples of Gosia input and output for common calculations, such as
** input file templates
** common detector definitions
** proper data set normalizations
** fitting strategies for systems with many matrix elements
* Solutions for difficult calculations, such as extreme inverse kinematics cases
* More detailed theory notes

* Examples of the use of [[Pawel]], [[ANNL]] and other codes in the Gosia suite

Wiki users are encouraged to contribute anything that should be of general interest to the Gosia user community and to move solved problems from the Forum if they may be of general interest.

==Help for the Wiki user==

Consult the page [[Wiki_formatting]] for basic formatting instructions to contribute to this Wiki.

==Links==

Some of the following pages will be absorbed into the pages on the new Wiki server.

* The [http://www.slcj.uw.edu.pl/en/0.html Warsaw Heavy Ion Laboratory] page and the
* [http://www.slcj.uw.edu.pl/gosia_workshop 2008 Gosia Workshop] at Warsaw
* The [http://www.ikp.uni-koeln.de/~warr/gosia/ Cologne Gosia page]
* and the [http://www.pas.rochester.edu/~cline/Gosia/index.html Rochester Gosia page]

==Notes==

<references/>

User talk:Shaofei Zhu

2012-08-20T00:01:23Z

Gosia: Welcome!

'''Welcome to ''GOSIA''!'''
We hope you will contribute much and well.
You will probably want to read the [[Help:Contents|help pages]].
Again, welcome and have fun! [[User:Gosia|Gosia]] 20:01, 19 August 2012 (EDT)

User:Shaofei Zhu

2012-08-20T00:01:23Z

Gosia: Creating user page with biography of new user.

Your Friend.Your Friend.Your Friend.Your Friend.Your Friend.Your Friend.Your Friend.Your Friend.Your Friend.Your Friend.Your Friend.Your Friend.Your Friend.Your Friend.Your Friend.Your Friend.Your Friend.Your Friend.Your Friend.Your Friend.Your Friend.Your Friend.Your Friend.Your Friend.Your Friend.Your Friend.Your Friend.Your Friend.Your Friend.Your Friend.Your Friend.Your Friend.Your Friend.Your Friend.Your Friend.Your Friend.Your Friend.Your Friend.Your Friend.Your Friend.Your Friend.Your Friend.Your Friend.Your Friend.Your Friend.Your Friend.Your Friend.Your Friend.Your Friend.Your Friend.Your Friend.Your Friend.Your Friend.Your Friend.Your Friend.Your Friend.Your Friend.Your Friend.Your Friend.Your Friend.Your Friend.Your Friend.Your Friend.Your Friend.Your Friend.Your Friend.Your Friend.Your Friend.Your Friend.Your Friend.Your Friend.Your Friend.Your Friend.Your Friend.Your Friend.Your Friend.Your Friend.Your Friend.Your Friend.Your Friend.

Gosia

2012-01-02T14:06:40Z

Gosia: /* Downloads */ misnamed gosia2 file

Gosia is the primary analysis code for planning experiments and analyzing data for nuclear structure physics using [[low-energy Coulomb excitation]] experiments. It is suited for both planning experiments and analysis of Coulomb excitation data. The original version was written at the University of Rochester in 1979--1980 by [[Tomasz Czosnyka]], [http://www.pas.rochester.edu/~cline/ D. Cline] and [http://www.turpion.org/links/ca4ad02e0d0fafd70a31c549cf4b3c4c_0.phtml C.Y. Wu]. T. Czosnyka maintained the code until his untimely death in 2006. [[What_is_Gosia | Learn more...]].

==What Gosia can do for the experimenter==

===Experiment planning and simulation===

The GOSIA suite of codes are ideally suited to the design and planning of
heavy-ion induced Coulomb excitation experiments as well as the subsequent
analysis. Coulomb excitation experiments can seem deceptively simple,
especially for few-state problems, leading some experimenters to fall into
analysis traps or collecting data that have less than optimal sensitivity to
the goals of the experiment. The [[experiment_planning | Experiment planning]] page identifies potential pitfalls
in the design and analysis of Coulomb excitation experiments.

===Analysis of Coulomb excitation data===

The motivation for development of Gosia was to
implement the capability to extract measured
<math>E\lambda</math>
matrix elements model-independently from Coulomb excitation data. The first
major task required to achieve this goal was to design experiments covering a
wide dynamic range of Coulomb excitation strength that provide sufficient
experimental data to overdetermine the many unknown matrix elements.
Experimental techniques were developed to achieve this requirement in the
1980's and primarily involved Coulomb excitation measurements over a wide
range of both scattering angle and unexcited nucleus
<math>Z</math> value. The second major task was the development of Gosia to
model-independently extract the matrix elements via a least-squares search of
the data. During the 1980's and early 1990's the ready availability of beam
time at heavy-ion accelerator facilities, the availability of high-efficiency
<math>p-\gamma</math> detector facilities, and access to fast computer systems needed for the Gosia
least-squares searches, enabled the first model-independent extraction of
<math>E\lambda</math>
matrix elements from multiple Coulomb excitation data.

[[Model_independent_analysis | Model-independent analysis]]

[[Model_dependent_analysis | Model-dependent analysis]]

==Selected special topics==

Other topics can be found using the search box at the left.

[[Integrated_yields | Interpreting the "integrated yields" output]]

[[normalization_of_yield_data | Normalization of gamma-ray yield data]]

==Downloads==

(Right-click to download source codes.)

* The current version of the [http://www.pas.rochester.edu/~cline/Gosia/Gosia_Manual_20110730.pdf Gosia manual]
* The latest release of [http://www.pas.rochester.edu/%7Ehayes/gosia_versions/gosia_20110524.2.f Gosia]
* The latest release of [http://www.pas.rochester.edu/%7Ehayes/gosia_versions/gosia2_20081208.14.f Gosia2], for analysing simultaneous Coulomb excitation of target and projectile, using a common normalization.
* [http://www.pas.rochester.edu/~hayes/beta_rachel/rachel.2.0.8.beta.tar Rachel], the graphical interface for Gosia. See also the [[Gui | Rachel]] page.
* [http://www.pas.rochester.edu/%7Ecline/Research/GOSIAcodes/pawel-06-mod.f Pawel], the Gosia version to treat excitation of a nucleus in an isomer state
* [http://www.pas.rochester.edu/%7Ecline/Research/GOSIAcodes/gosia_arm.for ANNL (Anneal)], a special version of Gosia developed by Rich Ibbotson that uses simulated annealing techniques to locate minima
* [http://www.pas.rochester.edu/%7Ecline/Research/GOSIAcodes/sigma.f Sigma], the 2006 Fortran source code for deducing the quadrupole invariants from the E2 matrix elements determined by Gosia
* [http://www.pas.rochester.edu/%7Ecline/Research/GOSIAcodes/gremlin.f GREMLIN], the gamma-ray detector efficiency code developed for use with GOSIA in 1987 by Alexander Kavka

* The set of [http://www.pas.rochester.edu/~hayes/gosia_downloads/fit_demo_2011.tar demonstration files] to accompany the Gosia tutorial in chapter 14 of the Gosia Manual

==Installing Gosia==

Installation of Gosia requires only the following steps:

# Compiling gosia with a Fortran compiler
# Setting the default path or alias to find Gosia, if desired. (See also the path requirements for [[Gui|Rachel]] and the [[rachel setup file]].)

Most standard Fortran 77 compilers will produce a working Gosia executable. GNU
<tt>g77</tt> is recommended, but is becoming deprecated on newer machines. The newer,
more commonly used <tt>gfortran</tt> will also work. Intel Fortran should work, but is not recommended, because future error trapping patches may not work well with the Intel compiler. For more information about
compiling and standard builds, refer to the page [[compiling gosia | Compiling Gosia]].

== User support ==

===The graphical interface for Gosia===

A [[Gui | GUI (Graphical User Interface) called Rachel]] has been developed and is currently undergoing beta-testing. Novice Gosia users can use this interface to develop properly formatted template Gosia input files. These can be modified by comparing the input lines to the Gosia manual instructions, or Gosia can be run entirely from within the GUI for many typical [[simulation (experiment planning)]] and analysis problems.

===Example Gosia input files===

Chapter 14 of the current [[Gosia Manual]] contains an annotated example input, a flowchart of the procedures that must be run during analysis of data and a tutorial based on a set of example files which can be obtained on the [[Gosia_tutorials]] page.

===The Gosia Forum===

The new gosia forum can be found [http://www-user.pas.rochester.edu/~gosia/phpBB3/index.php here.] As described on the [[Gosia_users'_forum]] page, the Forum is the appropriate place to post requests for help with specific Gosia calculations and for experienced users to give answers and advice.

==Maintenance of the Gosia codes==

The Gosia codes are maintained by the [[Gosia_Steering_Committee]].

==Purpose of the Gosia Wiki==

While the Wiki will eventually mirror much of the content of the [http://www.pas.rochester.edu/%7Ecline/Gosia/2011manual20110428.pdf Gosia Manual], the purpose is not to reproduce the manual in its entirety. The Gosia Manual should still be considered the primary reference for running Gosia. The advantage of the Wiki format is that an unlimited number of pages can be added here by interested users on special topics that are not appropriate for a users' manual. These may include

* Examples of Gosia input and output for common calculations, such as
** input file templates
** common detector definitions
** proper data set normalizations
** fitting strategies for systems with many matrix elements
* Solutions for difficult calculations, such as extreme inverse kinematics cases
* More detailed theory notes

* Examples of the use of [[Pawel]], [[ANNL]] and other codes in the Gosia suite

Wiki users are encouraged to contribute anything that should be of general interest to the Gosia user community and to move solved problems from the Forum if they may be of general interest.

==Help for the Wiki user==

Consult the page [[Wiki_formatting]] for basic formatting instructions to contribute to this Wiki.

==Links==

Some of the following pages will be absorbed into the pages on the new Wiki server.

* The [http://www.slcj.uw.edu.pl/en/0.html Warsaw Heavy Ion Laboratory] page and the
* [http://www.slcj.uw.edu.pl/gosia_workshop 2008 Gosia Workshop] at Warsaw
* The [http://www.ikp.uni-koeln.de/~warr/gosia/ Cologne Gosia page]
* and the [http://www.pas.rochester.edu/~cline/Gosia/index.html Rochester Gosia page]

==Notes==

<references/>

Gosia

2012-01-02T14:06:15Z

Gosia: /* Downloads */ Putting the latest Gosia2 version on hayes's server

Gosia is the primary analysis code for planning experiments and analyzing data for nuclear structure physics using [[low-energy Coulomb excitation]] experiments. It is suited for both planning experiments and analysis of Coulomb excitation data. The original version was written at the University of Rochester in 1979--1980 by [[Tomasz Czosnyka]], [http://www.pas.rochester.edu/~cline/ D. Cline] and [http://www.turpion.org/links/ca4ad02e0d0fafd70a31c549cf4b3c4c_0.phtml C.Y. Wu]. T. Czosnyka maintained the code until his untimely death in 2006. [[What_is_Gosia | Learn more...]].

==What Gosia can do for the experimenter==

===Experiment planning and simulation===

The GOSIA suite of codes are ideally suited to the design and planning of
heavy-ion induced Coulomb excitation experiments as well as the subsequent
analysis. Coulomb excitation experiments can seem deceptively simple,
especially for few-state problems, leading some experimenters to fall into
analysis traps or collecting data that have less than optimal sensitivity to
the goals of the experiment. The [[experiment_planning | Experiment planning]] page identifies potential pitfalls
in the design and analysis of Coulomb excitation experiments.

===Analysis of Coulomb excitation data===

The motivation for development of Gosia was to
implement the capability to extract measured
<math>E\lambda</math>
matrix elements model-independently from Coulomb excitation data. The first
major task required to achieve this goal was to design experiments covering a
wide dynamic range of Coulomb excitation strength that provide sufficient
experimental data to overdetermine the many unknown matrix elements.
Experimental techniques were developed to achieve this requirement in the
1980's and primarily involved Coulomb excitation measurements over a wide
range of both scattering angle and unexcited nucleus
<math>Z</math> value. The second major task was the development of Gosia to
model-independently extract the matrix elements via a least-squares search of
the data. During the 1980's and early 1990's the ready availability of beam
time at heavy-ion accelerator facilities, the availability of high-efficiency
<math>p-\gamma</math> detector facilities, and access to fast computer systems needed for the Gosia
least-squares searches, enabled the first model-independent extraction of
<math>E\lambda</math>
matrix elements from multiple Coulomb excitation data.

[[Model_independent_analysis | Model-independent analysis]]

[[Model_dependent_analysis | Model-dependent analysis]]

==Selected special topics==

Other topics can be found using the search box at the left.

[[Integrated_yields | Interpreting the "integrated yields" output]]

[[normalization_of_yield_data | Normalization of gamma-ray yield data]]

==Downloads==

(Right-click to download source codes.)

* The current version of the [http://www.pas.rochester.edu/~cline/Gosia/Gosia_Manual_20110730.pdf Gosia manual]
* The latest release of [http://www.pas.rochester.edu/%7Ehayes/gosia_versions/gosia_20110524.2.f Gosia]
* The latest release of [http://www.pas.rochester.edu/%7Ehayes/gosia_versions/gosia_20081208.14.f Gosia2], for analysing simultaneous Coulomb excitation of target and projectile, using a common normalization.
* [http://www.pas.rochester.edu/~hayes/beta_rachel/rachel.2.0.8.beta.tar Rachel], the graphical interface for Gosia. See also the [[Gui | Rachel]] page.
* [http://www.pas.rochester.edu/%7Ecline/Research/GOSIAcodes/pawel-06-mod.f Pawel], the Gosia version to treat excitation of a nucleus in an isomer state
* [http://www.pas.rochester.edu/%7Ecline/Research/GOSIAcodes/gosia_arm.for ANNL (Anneal)], a special version of Gosia developed by Rich Ibbotson that uses simulated annealing techniques to locate minima
* [http://www.pas.rochester.edu/%7Ecline/Research/GOSIAcodes/sigma.f Sigma], the 2006 Fortran source code for deducing the quadrupole invariants from the E2 matrix elements determined by Gosia
* [http://www.pas.rochester.edu/%7Ecline/Research/GOSIAcodes/gremlin.f GREMLIN], the gamma-ray detector efficiency code developed for use with GOSIA in 1987 by Alexander Kavka

* The set of [http://www.pas.rochester.edu/~hayes/gosia_downloads/fit_demo_2011.tar demonstration files] to accompany the Gosia tutorial in chapter 14 of the Gosia Manual

==Installing Gosia==

Installation of Gosia requires only the following steps:

# Compiling gosia with a Fortran compiler
# Setting the default path or alias to find Gosia, if desired. (See also the path requirements for [[Gui|Rachel]] and the [[rachel setup file]].)

Most standard Fortran 77 compilers will produce a working Gosia executable. GNU
<tt>g77</tt> is recommended, but is becoming deprecated on newer machines. The newer,
more commonly used <tt>gfortran</tt> will also work. Intel Fortran should work, but is not recommended, because future error trapping patches may not work well with the Intel compiler. For more information about
compiling and standard builds, refer to the page [[compiling gosia | Compiling Gosia]].

== User support ==

===The graphical interface for Gosia===

A [[Gui | GUI (Graphical User Interface) called Rachel]] has been developed and is currently undergoing beta-testing. Novice Gosia users can use this interface to develop properly formatted template Gosia input files. These can be modified by comparing the input lines to the Gosia manual instructions, or Gosia can be run entirely from within the GUI for many typical [[simulation (experiment planning)]] and analysis problems.

===Example Gosia input files===

Chapter 14 of the current [[Gosia Manual]] contains an annotated example input, a flowchart of the procedures that must be run during analysis of data and a tutorial based on a set of example files which can be obtained on the [[Gosia_tutorials]] page.

===The Gosia Forum===

The new gosia forum can be found [http://www-user.pas.rochester.edu/~gosia/phpBB3/index.php here.] As described on the [[Gosia_users'_forum]] page, the Forum is the appropriate place to post requests for help with specific Gosia calculations and for experienced users to give answers and advice.

==Maintenance of the Gosia codes==

The Gosia codes are maintained by the [[Gosia_Steering_Committee]].

==Purpose of the Gosia Wiki==

While the Wiki will eventually mirror much of the content of the [http://www.pas.rochester.edu/%7Ecline/Gosia/2011manual20110428.pdf Gosia Manual], the purpose is not to reproduce the manual in its entirety. The Gosia Manual should still be considered the primary reference for running Gosia. The advantage of the Wiki format is that an unlimited number of pages can be added here by interested users on special topics that are not appropriate for a users' manual. These may include

* Examples of Gosia input and output for common calculations, such as
** input file templates
** common detector definitions
** proper data set normalizations
** fitting strategies for systems with many matrix elements
* Solutions for difficult calculations, such as extreme inverse kinematics cases
* More detailed theory notes

* Examples of the use of [[Pawel]], [[ANNL]] and other codes in the Gosia suite

Wiki users are encouraged to contribute anything that should be of general interest to the Gosia user community and to move solved problems from the Forum if they may be of general interest.

==Help for the Wiki user==

Consult the page [[Wiki_formatting]] for basic formatting instructions to contribute to this Wiki.

==Links==

Some of the following pages will be absorbed into the pages on the new Wiki server.

* The [http://www.slcj.uw.edu.pl/en/0.html Warsaw Heavy Ion Laboratory] page and the
* [http://www.slcj.uw.edu.pl/gosia_workshop 2008 Gosia Workshop] at Warsaw
* The [http://www.ikp.uni-koeln.de/~warr/gosia/ Cologne Gosia page]
* and the [http://www.pas.rochester.edu/~cline/Gosia/index.html Rochester Gosia page]

==Notes==

<references/>

Gosia

2012-01-02T14:02:38Z

Gosia: /* Downloads */ Putting the latest Gosia version on hayes's server

Gosia is the primary analysis code for planning experiments and analyzing data for nuclear structure physics using [[low-energy Coulomb excitation]] experiments. It is suited for both planning experiments and analysis of Coulomb excitation data. The original version was written at the University of Rochester in 1979--1980 by [[Tomasz Czosnyka]], [http://www.pas.rochester.edu/~cline/ D. Cline] and [http://www.turpion.org/links/ca4ad02e0d0fafd70a31c549cf4b3c4c_0.phtml C.Y. Wu]. T. Czosnyka maintained the code until his untimely death in 2006. [[What_is_Gosia | Learn more...]].

==What Gosia can do for the experimenter==

===Experiment planning and simulation===

The GOSIA suite of codes are ideally suited to the design and planning of
heavy-ion induced Coulomb excitation experiments as well as the subsequent
analysis. Coulomb excitation experiments can seem deceptively simple,
especially for few-state problems, leading some experimenters to fall into
analysis traps or collecting data that have less than optimal sensitivity to
the goals of the experiment. The [[experiment_planning | Experiment planning]] page identifies potential pitfalls
in the design and analysis of Coulomb excitation experiments.

===Analysis of Coulomb excitation data===

The motivation for development of Gosia was to
implement the capability to extract measured
<math>E\lambda</math>
matrix elements model-independently from Coulomb excitation data. The first
major task required to achieve this goal was to design experiments covering a
wide dynamic range of Coulomb excitation strength that provide sufficient
experimental data to overdetermine the many unknown matrix elements.
Experimental techniques were developed to achieve this requirement in the
1980's and primarily involved Coulomb excitation measurements over a wide
range of both scattering angle and unexcited nucleus
<math>Z</math> value. The second major task was the development of Gosia to
model-independently extract the matrix elements via a least-squares search of
the data. During the 1980's and early 1990's the ready availability of beam
time at heavy-ion accelerator facilities, the availability of high-efficiency
<math>p-\gamma</math> detector facilities, and access to fast computer systems needed for the Gosia
least-squares searches, enabled the first model-independent extraction of
<math>E\lambda</math>
matrix elements from multiple Coulomb excitation data.

[[Model_independent_analysis | Model-independent analysis]]

[[Model_dependent_analysis | Model-dependent analysis]]

==Selected special topics==

Other topics can be found using the search box at the left.

[[Integrated_yields | Interpreting the "integrated yields" output]]

[[normalization_of_yield_data | Normalization of gamma-ray yield data]]

==Downloads==

(Right-click to download source codes.)

* The current version of the [http://www.pas.rochester.edu/~cline/Gosia/Gosia_Manual_20110730.pdf Gosia manual]
* The latest release of [http://www.pas.rochester.edu/%7Ehayes/gosia_versions/gosia_20110524.2.f Gosia]
* The latest release of [http://www.ikp.uni-koeln.de/~warr/gosia/gosia2_20081208.12.f Gosia2], for analysing simultaneous Coulomb excitation of target and projectile, using a common normalization.
* [http://www.pas.rochester.edu/~hayes/beta_rachel/rachel.2.0.8.beta.tar Rachel], the graphical interface for Gosia. See also the [[Gui | Rachel]] page.
* [http://www.pas.rochester.edu/%7Ecline/Research/GOSIAcodes/pawel-06-mod.f Pawel], the Gosia version to treat excitation of a nucleus in an isomer state
* [http://www.pas.rochester.edu/%7Ecline/Research/GOSIAcodes/gosia_arm.for ANNL (Anneal)], a special version of Gosia developed by Rich Ibbotson that uses simulated annealing techniques to locate minima
* [http://www.pas.rochester.edu/%7Ecline/Research/GOSIAcodes/sigma.f Sigma], the 2006 Fortran source code for deducing the quadrupole invariants from the E2 matrix elements determined by Gosia
* [http://www.pas.rochester.edu/%7Ecline/Research/GOSIAcodes/gremlin.f GREMLIN], the gamma-ray detector efficiency code developed for use with GOSIA in 1987 by Alexander Kavka

* The set of [http://www.pas.rochester.edu/~hayes/gosia_downloads/fit_demo_2011.tar demonstration files] to accompany the Gosia tutorial in chapter 14 of the Gosia Manual

==Installing Gosia==

Installation of Gosia requires only the following steps:

# Compiling gosia with a Fortran compiler
# Setting the default path or alias to find Gosia, if desired. (See also the path requirements for [[Gui|Rachel]] and the [[rachel setup file]].)

Most standard Fortran 77 compilers will produce a working Gosia executable. GNU
<tt>g77</tt> is recommended, but is becoming deprecated on newer machines. The newer,
more commonly used <tt>gfortran</tt> will also work. Intel Fortran should work, but is not recommended, because future error trapping patches may not work well with the Intel compiler. For more information about
compiling and standard builds, refer to the page [[compiling gosia | Compiling Gosia]].

== User support ==

===The graphical interface for Gosia===

A [[Gui | GUI (Graphical User Interface) called Rachel]] has been developed and is currently undergoing beta-testing. Novice Gosia users can use this interface to develop properly formatted template Gosia input files. These can be modified by comparing the input lines to the Gosia manual instructions, or Gosia can be run entirely from within the GUI for many typical [[simulation (experiment planning)]] and analysis problems.

===Example Gosia input files===

Chapter 14 of the current [[Gosia Manual]] contains an annotated example input, a flowchart of the procedures that must be run during analysis of data and a tutorial based on a set of example files which can be obtained on the [[Gosia_tutorials]] page.

===The Gosia Forum===

The new gosia forum can be found [http://www-user.pas.rochester.edu/~gosia/phpBB3/index.php here.] As described on the [[Gosia_users'_forum]] page, the Forum is the appropriate place to post requests for help with specific Gosia calculations and for experienced users to give answers and advice.

==Maintenance of the Gosia codes==

The Gosia codes are maintained by the [[Gosia_Steering_Committee]].

==Purpose of the Gosia Wiki==

While the Wiki will eventually mirror much of the content of the [http://www.pas.rochester.edu/%7Ecline/Gosia/2011manual20110428.pdf Gosia Manual], the purpose is not to reproduce the manual in its entirety. The Gosia Manual should still be considered the primary reference for running Gosia. The advantage of the Wiki format is that an unlimited number of pages can be added here by interested users on special topics that are not appropriate for a users' manual. These may include

* Examples of Gosia input and output for common calculations, such as
** input file templates
** common detector definitions
** proper data set normalizations
** fitting strategies for systems with many matrix elements
* Solutions for difficult calculations, such as extreme inverse kinematics cases
* More detailed theory notes

* Examples of the use of [[Pawel]], [[ANNL]] and other codes in the Gosia suite

Wiki users are encouraged to contribute anything that should be of general interest to the Gosia user community and to move solved problems from the Forum if they may be of general interest.

==Help for the Wiki user==

Consult the page [[Wiki_formatting]] for basic formatting instructions to contribute to this Wiki.

==Links==

Some of the following pages will be absorbed into the pages on the new Wiki server.

* The [http://www.slcj.uw.edu.pl/en/0.html Warsaw Heavy Ion Laboratory] page and the
* [http://www.slcj.uw.edu.pl/gosia_workshop 2008 Gosia Workshop] at Warsaw
* The [http://www.ikp.uni-koeln.de/~warr/gosia/ Cologne Gosia page]
* and the [http://www.pas.rochester.edu/~cline/Gosia/index.html Rochester Gosia page]

==Notes==

<references/>

Gosia

2012-01-02T13:58:05Z

Gosia: /* Downloads */ Attempting to keep Gosia versions on the wiki server

Gosia is the primary analysis code for planning experiments and analyzing data for nuclear structure physics using [[low-energy Coulomb excitation]] experiments. It is suited for both planning experiments and analysis of Coulomb excitation data. The original version was written at the University of Rochester in 1979--1980 by [[Tomasz Czosnyka]], [http://www.pas.rochester.edu/~cline/ D. Cline] and [http://www.turpion.org/links/ca4ad02e0d0fafd70a31c549cf4b3c4c_0.phtml C.Y. Wu]. T. Czosnyka maintained the code until his untimely death in 2006. [[What_is_Gosia | Learn more...]].

==What Gosia can do for the experimenter==

===Experiment planning and simulation===

The GOSIA suite of codes are ideally suited to the design and planning of
heavy-ion induced Coulomb excitation experiments as well as the subsequent
analysis. Coulomb excitation experiments can seem deceptively simple,
especially for few-state problems, leading some experimenters to fall into
analysis traps or collecting data that have less than optimal sensitivity to
the goals of the experiment. The [[experiment_planning | Experiment planning]] page identifies potential pitfalls
in the design and analysis of Coulomb excitation experiments.

===Analysis of Coulomb excitation data===

The motivation for development of Gosia was to
implement the capability to extract measured
<math>E\lambda</math>
matrix elements model-independently from Coulomb excitation data. The first
major task required to achieve this goal was to design experiments covering a
wide dynamic range of Coulomb excitation strength that provide sufficient
experimental data to overdetermine the many unknown matrix elements.
Experimental techniques were developed to achieve this requirement in the
1980's and primarily involved Coulomb excitation measurements over a wide
range of both scattering angle and unexcited nucleus
<math>Z</math> value. The second major task was the development of Gosia to
model-independently extract the matrix elements via a least-squares search of
the data. During the 1980's and early 1990's the ready availability of beam
time at heavy-ion accelerator facilities, the availability of high-efficiency
<math>p-\gamma</math> detector facilities, and access to fast computer systems needed for the Gosia
least-squares searches, enabled the first model-independent extraction of
<math>E\lambda</math>
matrix elements from multiple Coulomb excitation data.

[[Model_independent_analysis | Model-independent analysis]]

[[Model_dependent_analysis | Model-dependent analysis]]

==Selected special topics==

Other topics can be found using the search box at the left.

[[Integrated_yields | Interpreting the "integrated yields" output]]

[[normalization_of_yield_data | Normalization of gamma-ray yield data]]

==Downloads==

(Right-click to download source codes.)

* The current version of the [http://www.pas.rochester.edu/~cline/Gosia/Gosia_Manual_20110730.pdf Gosia manual]


* The latest release of <file>\\www-user\public_html\gosia_versions/gosia_20110524.2.f</file>
* The latest release of [http://www.ikp.uni-koeln.de/~warr/gosia/gosia2_20081208.12.f Gosia2], for analysing simultaneous Coulomb excitation of target and projectile, using a common normalization.
* [http://www.pas.rochester.edu/~hayes/beta_rachel/rachel.2.0.8.beta.tar Rachel], the graphical interface for Gosia. See also the [[Gui | Rachel]] page.
* [http://www.pas.rochester.edu/%7Ecline/Research/GOSIAcodes/pawel-06-mod.f Pawel], the Gosia version to treat excitation of a nucleus in an isomer state
* [http://www.pas.rochester.edu/%7Ecline/Research/GOSIAcodes/gosia_arm.for ANNL (Anneal)], a special version of Gosia developed by Rich Ibbotson that uses simulated annealing techniques to locate minima
* [http://www.pas.rochester.edu/%7Ecline/Research/GOSIAcodes/sigma.f Sigma], the 2006 Fortran source code for deducing the quadrupole invariants from the E2 matrix elements determined by Gosia
* [http://www.pas.rochester.edu/%7Ecline/Research/GOSIAcodes/gremlin.f GREMLIN], the gamma-ray detector efficiency code developed for use with GOSIA in 1987 by Alexander Kavka

* The set of [http://www.pas.rochester.edu/~hayes/gosia_downloads/fit_demo_2011.tar demonstration files] to accompany the Gosia tutorial in chapter 14 of the Gosia Manual

==Installing Gosia==

Installation of Gosia requires only the following steps:

# Compiling gosia with a Fortran compiler
# Setting the default path or alias to find Gosia, if desired. (See also the path requirements for [[Gui|Rachel]] and the [[rachel setup file]].)

Most standard Fortran 77 compilers will produce a working Gosia executable. GNU
<tt>g77</tt> is recommended, but is becoming deprecated on newer machines. The newer,
more commonly used <tt>gfortran</tt> will also work. Intel Fortran should work, but is not recommended, because future error trapping patches may not work well with the Intel compiler. For more information about
compiling and standard builds, refer to the page [[compiling gosia | Compiling Gosia]].

== User support ==

===The graphical interface for Gosia===

A [[Gui | GUI (Graphical User Interface) called Rachel]] has been developed and is currently undergoing beta-testing. Novice Gosia users can use this interface to develop properly formatted template Gosia input files. These can be modified by comparing the input lines to the Gosia manual instructions, or Gosia can be run entirely from within the GUI for many typical [[simulation (experiment planning)]] and analysis problems.

===Example Gosia input files===

Chapter 14 of the current [[Gosia Manual]] contains an annotated example input, a flowchart of the procedures that must be run during analysis of data and a tutorial based on a set of example files which can be obtained on the [[Gosia_tutorials]] page.

===The Gosia Forum===

The new gosia forum can be found [http://www-user.pas.rochester.edu/~gosia/phpBB3/index.php here.] As described on the [[Gosia_users'_forum]] page, the Forum is the appropriate place to post requests for help with specific Gosia calculations and for experienced users to give answers and advice.

==Maintenance of the Gosia codes==

The Gosia codes are maintained by the [[Gosia_Steering_Committee]].

==Purpose of the Gosia Wiki==

While the Wiki will eventually mirror much of the content of the [http://www.pas.rochester.edu/%7Ecline/Gosia/2011manual20110428.pdf Gosia Manual], the purpose is not to reproduce the manual in its entirety. The Gosia Manual should still be considered the primary reference for running Gosia. The advantage of the Wiki format is that an unlimited number of pages can be added here by interested users on special topics that are not appropriate for a users' manual. These may include

* Examples of Gosia input and output for common calculations, such as
** input file templates
** common detector definitions
** proper data set normalizations
** fitting strategies for systems with many matrix elements
* Solutions for difficult calculations, such as extreme inverse kinematics cases
* More detailed theory notes

* Examples of the use of [[Pawel]], [[ANNL]] and other codes in the Gosia suite

Wiki users are encouraged to contribute anything that should be of general interest to the Gosia user community and to move solved problems from the Forum if they may be of general interest.

==Help for the Wiki user==

Consult the page [[Wiki_formatting]] for basic formatting instructions to contribute to this Wiki.

==Links==

Some of the following pages will be absorbed into the pages on the new Wiki server.

* The [http://www.slcj.uw.edu.pl/en/0.html Warsaw Heavy Ion Laboratory] page and the
* [http://www.slcj.uw.edu.pl/gosia_workshop 2008 Gosia Workshop] at Warsaw
* The [http://www.ikp.uni-koeln.de/~warr/gosia/ Cologne Gosia page]
* and the [http://www.pas.rochester.edu/~cline/Gosia/index.html Rochester Gosia page]

==Notes==

<references/>

Gosia

2012-01-02T13:55:38Z

Gosia: /* Downloads */ Attempting to keep Gosia versions on the wiki server

Gosia is the primary analysis code for planning experiments and analyzing data for nuclear structure physics using [[low-energy Coulomb excitation]] experiments. It is suited for both planning experiments and analysis of Coulomb excitation data. The original version was written at the University of Rochester in 1979--1980 by [[Tomasz Czosnyka]], [http://www.pas.rochester.edu/~cline/ D. Cline] and [http://www.turpion.org/links/ca4ad02e0d0fafd70a31c549cf4b3c4c_0.phtml C.Y. Wu]. T. Czosnyka maintained the code until his untimely death in 2006. [[What_is_Gosia | Learn more...]].

==What Gosia can do for the experimenter==

===Experiment planning and simulation===

The GOSIA suite of codes are ideally suited to the design and planning of
heavy-ion induced Coulomb excitation experiments as well as the subsequent
analysis. Coulomb excitation experiments can seem deceptively simple,
especially for few-state problems, leading some experimenters to fall into
analysis traps or collecting data that have less than optimal sensitivity to
the goals of the experiment. The [[experiment_planning | Experiment planning]] page identifies potential pitfalls
in the design and analysis of Coulomb excitation experiments.

===Analysis of Coulomb excitation data===

The motivation for development of Gosia was to
implement the capability to extract measured
<math>E\lambda</math>
matrix elements model-independently from Coulomb excitation data. The first
major task required to achieve this goal was to design experiments covering a
wide dynamic range of Coulomb excitation strength that provide sufficient
experimental data to overdetermine the many unknown matrix elements.
Experimental techniques were developed to achieve this requirement in the
1980's and primarily involved Coulomb excitation measurements over a wide
range of both scattering angle and unexcited nucleus
<math>Z</math> value. The second major task was the development of Gosia to
model-independently extract the matrix elements via a least-squares search of
the data. During the 1980's and early 1990's the ready availability of beam
time at heavy-ion accelerator facilities, the availability of high-efficiency
<math>p-\gamma</math> detector facilities, and access to fast computer systems needed for the Gosia
least-squares searches, enabled the first model-independent extraction of
<math>E\lambda</math>
matrix elements from multiple Coulomb excitation data.

[[Model_independent_analysis | Model-independent analysis]]

[[Model_dependent_analysis | Model-dependent analysis]]

==Selected special topics==

Other topics can be found using the search box at the left.

[[Integrated_yields | Interpreting the "integrated yields" output]]

[[normalization_of_yield_data | Normalization of gamma-ray yield data]]

==Downloads==

(Right-click to download source codes.)

* The current version of the [http://www.pas.rochester.edu/~cline/Gosia/Gosia_Manual_20110730.pdf Gosia manual]


* The latest release of [gosia_versions/gosia_20110524.2.f Gosia]
* The latest release of [http://www.ikp.uni-koeln.de/~warr/gosia/gosia2_20081208.12.f Gosia2], for analysing simultaneous Coulomb excitation of target and projectile, using a common normalization.
* [http://www.pas.rochester.edu/~hayes/beta_rachel/rachel.2.0.8.beta.tar Rachel], the graphical interface for Gosia. See also the [[Gui | Rachel]] page.
* [http://www.pas.rochester.edu/%7Ecline/Research/GOSIAcodes/pawel-06-mod.f Pawel], the Gosia version to treat excitation of a nucleus in an isomer state
* [http://www.pas.rochester.edu/%7Ecline/Research/GOSIAcodes/gosia_arm.for ANNL (Anneal)], a special version of Gosia developed by Rich Ibbotson that uses simulated annealing techniques to locate minima
* [http://www.pas.rochester.edu/%7Ecline/Research/GOSIAcodes/sigma.f Sigma], the 2006 Fortran source code for deducing the quadrupole invariants from the E2 matrix elements determined by Gosia
* [http://www.pas.rochester.edu/%7Ecline/Research/GOSIAcodes/gremlin.f GREMLIN], the gamma-ray detector efficiency code developed for use with GOSIA in 1987 by Alexander Kavka

* The set of [http://www.pas.rochester.edu/~hayes/gosia_downloads/fit_demo_2011.tar demonstration files] to accompany the Gosia tutorial in chapter 14 of the Gosia Manual

==Installing Gosia==

Installation of Gosia requires only the following steps:

# Compiling gosia with a Fortran compiler
# Setting the default path or alias to find Gosia, if desired. (See also the path requirements for [[Gui|Rachel]] and the [[rachel setup file]].)

Most standard Fortran 77 compilers will produce a working Gosia executable. GNU
<tt>g77</tt> is recommended, but is becoming deprecated on newer machines. The newer,
more commonly used <tt>gfortran</tt> will also work. Intel Fortran should work, but is not recommended, because future error trapping patches may not work well with the Intel compiler. For more information about
compiling and standard builds, refer to the page [[compiling gosia | Compiling Gosia]].

== User support ==

===The graphical interface for Gosia===

A [[Gui | GUI (Graphical User Interface) called Rachel]] has been developed and is currently undergoing beta-testing. Novice Gosia users can use this interface to develop properly formatted template Gosia input files. These can be modified by comparing the input lines to the Gosia manual instructions, or Gosia can be run entirely from within the GUI for many typical [[simulation (experiment planning)]] and analysis problems.

===Example Gosia input files===

Chapter 14 of the current [[Gosia Manual]] contains an annotated example input, a flowchart of the procedures that must be run during analysis of data and a tutorial based on a set of example files which can be obtained on the [[Gosia_tutorials]] page.

===The Gosia Forum===

The new gosia forum can be found [http://www-user.pas.rochester.edu/~gosia/phpBB3/index.php here.] As described on the [[Gosia_users'_forum]] page, the Forum is the appropriate place to post requests for help with specific Gosia calculations and for experienced users to give answers and advice.

==Maintenance of the Gosia codes==

The Gosia codes are maintained by the [[Gosia_Steering_Committee]].

==Purpose of the Gosia Wiki==

While the Wiki will eventually mirror much of the content of the [http://www.pas.rochester.edu/%7Ecline/Gosia/2011manual20110428.pdf Gosia Manual], the purpose is not to reproduce the manual in its entirety. The Gosia Manual should still be considered the primary reference for running Gosia. The advantage of the Wiki format is that an unlimited number of pages can be added here by interested users on special topics that are not appropriate for a users' manual. These may include

* Examples of Gosia input and output for common calculations, such as
** input file templates
** common detector definitions
** proper data set normalizations
** fitting strategies for systems with many matrix elements
* Solutions for difficult calculations, such as extreme inverse kinematics cases
* More detailed theory notes

* Examples of the use of [[Pawel]], [[ANNL]] and other codes in the Gosia suite

Wiki users are encouraged to contribute anything that should be of general interest to the Gosia user community and to move solved problems from the Forum if they may be of general interest.

==Help for the Wiki user==

Consult the page [[Wiki_formatting]] for basic formatting instructions to contribute to this Wiki.

==Links==

Some of the following pages will be absorbed into the pages on the new Wiki server.

* The [http://www.slcj.uw.edu.pl/en/0.html Warsaw Heavy Ion Laboratory] page and the
* [http://www.slcj.uw.edu.pl/gosia_workshop 2008 Gosia Workshop] at Warsaw
* The [http://www.ikp.uni-koeln.de/~warr/gosia/ Cologne Gosia page]
* and the [http://www.pas.rochester.edu/~cline/Gosia/index.html Rochester Gosia page]

==Notes==

<references/>

Gosia

2012-01-02T13:54:32Z

Gosia: /* Downloads */ Attempting to keep Gosia versions on the wiki server

Gosia is the primary analysis code for planning experiments and analyzing data for nuclear structure physics using [[low-energy Coulomb excitation]] experiments. It is suited for both planning experiments and analysis of Coulomb excitation data. The original version was written at the University of Rochester in 1979--1980 by [[Tomasz Czosnyka]], [http://www.pas.rochester.edu/~cline/ D. Cline] and [http://www.turpion.org/links/ca4ad02e0d0fafd70a31c549cf4b3c4c_0.phtml C.Y. Wu]. T. Czosnyka maintained the code until his untimely death in 2006. [[What_is_Gosia | Learn more...]].

==What Gosia can do for the experimenter==

===Experiment planning and simulation===

The GOSIA suite of codes are ideally suited to the design and planning of
heavy-ion induced Coulomb excitation experiments as well as the subsequent
analysis. Coulomb excitation experiments can seem deceptively simple,
especially for few-state problems, leading some experimenters to fall into
analysis traps or collecting data that have less than optimal sensitivity to
the goals of the experiment. The [[experiment_planning | Experiment planning]] page identifies potential pitfalls
in the design and analysis of Coulomb excitation experiments.

===Analysis of Coulomb excitation data===

The motivation for development of Gosia was to
implement the capability to extract measured
<math>E\lambda</math>
matrix elements model-independently from Coulomb excitation data. The first
major task required to achieve this goal was to design experiments covering a
wide dynamic range of Coulomb excitation strength that provide sufficient
experimental data to overdetermine the many unknown matrix elements.
Experimental techniques were developed to achieve this requirement in the
1980's and primarily involved Coulomb excitation measurements over a wide
range of both scattering angle and unexcited nucleus
<math>Z</math> value. The second major task was the development of Gosia to
model-independently extract the matrix elements via a least-squares search of
the data. During the 1980's and early 1990's the ready availability of beam
time at heavy-ion accelerator facilities, the availability of high-efficiency
<math>p-\gamma</math> detector facilities, and access to fast computer systems needed for the Gosia
least-squares searches, enabled the first model-independent extraction of
<math>E\lambda</math>
matrix elements from multiple Coulomb excitation data.

[[Model_independent_analysis | Model-independent analysis]]

[[Model_dependent_analysis | Model-dependent analysis]]

==Selected special topics==

Other topics can be found using the search box at the left.

[[Integrated_yields | Interpreting the "integrated yields" output]]

[[normalization_of_yield_data | Normalization of gamma-ray yield data]]

==Downloads==

(Right-click to download source codes.)

* The current version of the [http://www.pas.rochester.edu/~cline/Gosia/Gosia_Manual_20110730.pdf Gosia manual]

* The latest release of [http://www-user.pas.rochester.edu/gosia/public_html/gosia_versions/gosia_20110524.2.f Gosia]
* The latest release of [http://www.ikp.uni-koeln.de/~warr/gosia/gosia2_20081208.12.f Gosia2], for analysing simultaneous Coulomb excitation of target and projectile, using a common normalization.
* [http://www.pas.rochester.edu/~hayes/beta_rachel/rachel.2.0.8.beta.tar Rachel], the graphical interface for Gosia. See also the [[Gui | Rachel]] page.
* [http://www.pas.rochester.edu/%7Ecline/Research/GOSIAcodes/pawel-06-mod.f Pawel], the Gosia version to treat excitation of a nucleus in an isomer state
* [http://www.pas.rochester.edu/%7Ecline/Research/GOSIAcodes/gosia_arm.for ANNL (Anneal)], a special version of Gosia developed by Rich Ibbotson that uses simulated annealing techniques to locate minima
* [http://www.pas.rochester.edu/%7Ecline/Research/GOSIAcodes/sigma.f Sigma], the 2006 Fortran source code for deducing the quadrupole invariants from the E2 matrix elements determined by Gosia
* [http://www.pas.rochester.edu/%7Ecline/Research/GOSIAcodes/gremlin.f GREMLIN], the gamma-ray detector efficiency code developed for use with GOSIA in 1987 by Alexander Kavka

* The set of [http://www.pas.rochester.edu/~hayes/gosia_downloads/fit_demo_2011.tar demonstration files] to accompany the Gosia tutorial in chapter 14 of the Gosia Manual

==Installing Gosia==

Installation of Gosia requires only the following steps:

# Compiling gosia with a Fortran compiler
# Setting the default path or alias to find Gosia, if desired. (See also the path requirements for [[Gui|Rachel]] and the [[rachel setup file]].)

Most standard Fortran 77 compilers will produce a working Gosia executable. GNU
<tt>g77</tt> is recommended, but is becoming deprecated on newer machines. The newer,
more commonly used <tt>gfortran</tt> will also work. Intel Fortran should work, but is not recommended, because future error trapping patches may not work well with the Intel compiler. For more information about
compiling and standard builds, refer to the page [[compiling gosia | Compiling Gosia]].

== User support ==

===The graphical interface for Gosia===

A [[Gui | GUI (Graphical User Interface) called Rachel]] has been developed and is currently undergoing beta-testing. Novice Gosia users can use this interface to develop properly formatted template Gosia input files. These can be modified by comparing the input lines to the Gosia manual instructions, or Gosia can be run entirely from within the GUI for many typical [[simulation (experiment planning)]] and analysis problems.

===Example Gosia input files===

Chapter 14 of the current [[Gosia Manual]] contains an annotated example input, a flowchart of the procedures that must be run during analysis of data and a tutorial based on a set of example files which can be obtained on the [[Gosia_tutorials]] page.

===The Gosia Forum===

The new gosia forum can be found [http://www-user.pas.rochester.edu/~gosia/phpBB3/index.php here.] As described on the [[Gosia_users'_forum]] page, the Forum is the appropriate place to post requests for help with specific Gosia calculations and for experienced users to give answers and advice.

==Maintenance of the Gosia codes==

The Gosia codes are maintained by the [[Gosia_Steering_Committee]].

==Purpose of the Gosia Wiki==

While the Wiki will eventually mirror much of the content of the [http://www.pas.rochester.edu/%7Ecline/Gosia/2011manual20110428.pdf Gosia Manual], the purpose is not to reproduce the manual in its entirety. The Gosia Manual should still be considered the primary reference for running Gosia. The advantage of the Wiki format is that an unlimited number of pages can be added here by interested users on special topics that are not appropriate for a users' manual. These may include

* Examples of Gosia input and output for common calculations, such as
** input file templates
** common detector definitions
** proper data set normalizations
** fitting strategies for systems with many matrix elements
* Solutions for difficult calculations, such as extreme inverse kinematics cases
* More detailed theory notes

* Examples of the use of [[Pawel]], [[ANNL]] and other codes in the Gosia suite

Wiki users are encouraged to contribute anything that should be of general interest to the Gosia user community and to move solved problems from the Forum if they may be of general interest.

==Help for the Wiki user==

Consult the page [[Wiki_formatting]] for basic formatting instructions to contribute to this Wiki.

==Links==

Some of the following pages will be absorbed into the pages on the new Wiki server.

* The [http://www.slcj.uw.edu.pl/en/0.html Warsaw Heavy Ion Laboratory] page and the
* [http://www.slcj.uw.edu.pl/gosia_workshop 2008 Gosia Workshop] at Warsaw
* The [http://www.ikp.uni-koeln.de/~warr/gosia/ Cologne Gosia page]
* and the [http://www.pas.rochester.edu/~cline/Gosia/index.html Rochester Gosia page]

==Notes==

<references/>

Gosia

2012-01-02T13:53:17Z

Gosia: /* Downloads */ Updating to the last 2011 version of gosia

Gosia is the primary analysis code for planning experiments and analyzing data for nuclear structure physics using [[low-energy Coulomb excitation]] experiments. It is suited for both planning experiments and analysis of Coulomb excitation data. The original version was written at the University of Rochester in 1979--1980 by [[Tomasz Czosnyka]], [http://www.pas.rochester.edu/~cline/ D. Cline] and [http://www.turpion.org/links/ca4ad02e0d0fafd70a31c549cf4b3c4c_0.phtml C.Y. Wu]. T. Czosnyka maintained the code until his untimely death in 2006. [[What_is_Gosia | Learn more...]].

==What Gosia can do for the experimenter==

===Experiment planning and simulation===

The GOSIA suite of codes are ideally suited to the design and planning of
heavy-ion induced Coulomb excitation experiments as well as the subsequent
analysis. Coulomb excitation experiments can seem deceptively simple,
especially for few-state problems, leading some experimenters to fall into
analysis traps or collecting data that have less than optimal sensitivity to
the goals of the experiment. The [[experiment_planning | Experiment planning]] page identifies potential pitfalls
in the design and analysis of Coulomb excitation experiments.

===Analysis of Coulomb excitation data===

The motivation for development of Gosia was to
implement the capability to extract measured
<math>E\lambda</math>
matrix elements model-independently from Coulomb excitation data. The first
major task required to achieve this goal was to design experiments covering a
wide dynamic range of Coulomb excitation strength that provide sufficient
experimental data to overdetermine the many unknown matrix elements.
Experimental techniques were developed to achieve this requirement in the
1980's and primarily involved Coulomb excitation measurements over a wide
range of both scattering angle and unexcited nucleus
<math>Z</math> value. The second major task was the development of Gosia to
model-independently extract the matrix elements via a least-squares search of
the data. During the 1980's and early 1990's the ready availability of beam
time at heavy-ion accelerator facilities, the availability of high-efficiency
<math>p-\gamma</math> detector facilities, and access to fast computer systems needed for the Gosia
least-squares searches, enabled the first model-independent extraction of
<math>E\lambda</math>
matrix elements from multiple Coulomb excitation data.

[[Model_independent_analysis | Model-independent analysis]]

[[Model_dependent_analysis | Model-dependent analysis]]

==Selected special topics==

Other topics can be found using the search box at the left.

[[Integrated_yields | Interpreting the "integrated yields" output]]

[[normalization_of_yield_data | Normalization of gamma-ray yield data]]

==Downloads==

(Right-click to download source codes.)

* The current version of the [http://www.pas.rochester.edu/~cline/Gosia/Gosia_Manual_20110730.pdf Gosia manual]

* The latest release of [http://www-user.pas.rochester.edu/public_html/gosia_versions/gosia_20110524.2.f Gosia]
* The latest release of [http://www.ikp.uni-koeln.de/~warr/gosia/gosia2_20081208.12.f Gosia2], for analysing simultaneous Coulomb excitation of target and projectile, using a common normalization.
* [http://www.pas.rochester.edu/~hayes/beta_rachel/rachel.2.0.8.beta.tar Rachel], the graphical interface for Gosia. See also the [[Gui | Rachel]] page.
* [http://www.pas.rochester.edu/%7Ecline/Research/GOSIAcodes/pawel-06-mod.f Pawel], the Gosia version to treat excitation of a nucleus in an isomer state
* [http://www.pas.rochester.edu/%7Ecline/Research/GOSIAcodes/gosia_arm.for ANNL (Anneal)], a special version of Gosia developed by Rich Ibbotson that uses simulated annealing techniques to locate minima
* [http://www.pas.rochester.edu/%7Ecline/Research/GOSIAcodes/sigma.f Sigma], the 2006 Fortran source code for deducing the quadrupole invariants from the E2 matrix elements determined by Gosia
* [http://www.pas.rochester.edu/%7Ecline/Research/GOSIAcodes/gremlin.f GREMLIN], the gamma-ray detector efficiency code developed for use with GOSIA in 1987 by Alexander Kavka

* The set of [http://www.pas.rochester.edu/~hayes/gosia_downloads/fit_demo_2011.tar demonstration files] to accompany the Gosia tutorial in chapter 14 of the Gosia Manual

==Installing Gosia==

Installation of Gosia requires only the following steps:

# Compiling gosia with a Fortran compiler
# Setting the default path or alias to find Gosia, if desired. (See also the path requirements for [[Gui|Rachel]] and the [[rachel setup file]].)

Most standard Fortran 77 compilers will produce a working Gosia executable. GNU
<tt>g77</tt> is recommended, but is becoming deprecated on newer machines. The newer,
more commonly used <tt>gfortran</tt> will also work. Intel Fortran should work, but is not recommended, because future error trapping patches may not work well with the Intel compiler. For more information about
compiling and standard builds, refer to the page [[compiling gosia | Compiling Gosia]].

== User support ==

===The graphical interface for Gosia===

A [[Gui | GUI (Graphical User Interface) called Rachel]] has been developed and is currently undergoing beta-testing. Novice Gosia users can use this interface to develop properly formatted template Gosia input files. These can be modified by comparing the input lines to the Gosia manual instructions, or Gosia can be run entirely from within the GUI for many typical [[simulation (experiment planning)]] and analysis problems.

===Example Gosia input files===

Chapter 14 of the current [[Gosia Manual]] contains an annotated example input, a flowchart of the procedures that must be run during analysis of data and a tutorial based on a set of example files which can be obtained on the [[Gosia_tutorials]] page.

===The Gosia Forum===

The new gosia forum can be found [http://www-user.pas.rochester.edu/~gosia/phpBB3/index.php here.] As described on the [[Gosia_users'_forum]] page, the Forum is the appropriate place to post requests for help with specific Gosia calculations and for experienced users to give answers and advice.

==Maintenance of the Gosia codes==

The Gosia codes are maintained by the [[Gosia_Steering_Committee]].

==Purpose of the Gosia Wiki==

While the Wiki will eventually mirror much of the content of the [http://www.pas.rochester.edu/%7Ecline/Gosia/2011manual20110428.pdf Gosia Manual], the purpose is not to reproduce the manual in its entirety. The Gosia Manual should still be considered the primary reference for running Gosia. The advantage of the Wiki format is that an unlimited number of pages can be added here by interested users on special topics that are not appropriate for a users' manual. These may include

* Examples of Gosia input and output for common calculations, such as
** input file templates
** common detector definitions
** proper data set normalizations
** fitting strategies for systems with many matrix elements
* Solutions for difficult calculations, such as extreme inverse kinematics cases
* More detailed theory notes

* Examples of the use of [[Pawel]], [[ANNL]] and other codes in the Gosia suite

Wiki users are encouraged to contribute anything that should be of general interest to the Gosia user community and to move solved problems from the Forum if they may be of general interest.

==Help for the Wiki user==

Consult the page [[Wiki_formatting]] for basic formatting instructions to contribute to this Wiki.

==Links==

Some of the following pages will be absorbed into the pages on the new Wiki server.

* The [http://www.slcj.uw.edu.pl/en/0.html Warsaw Heavy Ion Laboratory] page and the
* [http://www.slcj.uw.edu.pl/gosia_workshop 2008 Gosia Workshop] at Warsaw
* The [http://www.ikp.uni-koeln.de/~warr/gosia/ Cologne Gosia page]
* and the [http://www.pas.rochester.edu/~cline/Gosia/index.html Rochester Gosia page]

==Notes==

<references/>

Wiki formatting

2011-08-14T10:54:44Z

Gosia: /* Latex math */

Consult the [http://meta.wikimedia.org/wiki/Help:Contents User's Guide] for information on using the wiki software.

==Level headings==

Level headings are surrounded by one or more '<tt>=</tt>' symbols. Each level has one more '<tt>=</tt>' than the higher level.

The 2nd-to-top level heading is the highest level that should be used in a page and is entered like this:

<pre>
==Level headings==
</pre>

==Emphasis (italics, bold, etc.)==

Refer to the MediaWiki [http://www.mediawiki.org/wiki/Help:Formatting formatting page] for help with text formatting.

==Code snippets==

Small snippets of Gosia inputs can be put in pages if they are generally applicable. (Solutions for special cases should be communicated via the [http://www-user.pas.rochester.edu/~gosia/phpBB3/ Gosia forum].) To enter a code snippet, type for example

<pre>
<pre>
OP,INTG
5,5,300,320,25,35
300,305,315,320,325
...
</pre>

</pre>

==Latex math==

Equations can be entered using a subset of the Latex math-mode tags, such as the following:

<pre>
<math>\Delta I = ^-2</math>

<math>\xi=1.4</math>

</pre>

Each formula is rendered either as HTML for simple formulas that can be typed into a single line

<math>\Delta I = ^-2</math>

<math>\xi=1.4</math>

or into a PNG image for complex formulas, e.g. involving fractions.

Formatting of complex equations has been fixed (August 2011). The wiki will now render nearly any proper Latex formula. Examples:

<pre>
<math>
\langle I_f\|E2\| I_i\rangle=\biggl[-\beta_f\langle I_f K=5\|+\alpha_f\langle I_f K=6\|\biggr]\widehat{E2}
\biggl[\alpha_i\|I_i K=5\rangle+\beta_i\|I_i K=6\rangle\biggr]=
</math>
<math>
-\alpha_i\beta_f\langle I_f K=5\| E2\| I_i K=5\rangle+\alpha_f\beta_i\langle I_f K=6\| E2\| I_i K=6\rangle
</math>
<math>
-\beta_i\beta_f\langle I_f K=5\| E2\| I_i K=6\rangle+\alpha_i\alpha_f\langle I_f K=6\| E2\| I_i K=5\rangle
</math>
</pre>

<math>
\langle I_f\|E2\| I_i\rangle=\biggl[-\beta_f\langle I_f K=5\|+\alpha_f\langle I_f K=6\|\biggr]\widehat{E2}
\biggl[\alpha_i\|I_i K=5\rangle+\beta_i\|I_i K=6\rangle\biggr]=
</math>
<math>
-\alpha_i\beta_f\langle I_f K=5\| E2\| I_i K=5\rangle+\alpha_f\beta_i\langle I_f K=6\| E2\| I_i K=6\rangle
</math>
<math>
-\beta_i\beta_f\langle I_f K=5\| E2\| I_i K=6\rangle+\alpha_i\alpha_f\langle I_f K=6\| E2\| I_i K=5\rangle
</math>

<pre>
<math>
f(x)=\frac{\int_a^b e^{-x^2} dx}{\frac{x}{x+\frac{1}{x+2}}}
</math>
</pre>

<math>
f(x)=\frac{\int_a^b e^{-x^2} dx}{\frac{x}{x+\frac{1}{x+2}}}
</math>

==Footnoting==

Enter text to be included in footnotes as in the following example:

<pre>
The semiclassical Coulomb excitation theory is appropriate
for multi-step heavy-ion excitations.<ref>The applicability
of first and second order perturbation theories is limited
to light-ion induced Coulomb excitation.</ref>
</pre>

which produces the text:

The semiclassical Coulomb excitation theory is appropriate for multi-step heavy-ion excitations.<ref>The applicability of first and second order perturbation theories is limited to light-ion induced Coulomb excitation.</ref>

and the footnote at the end of this page.

Every page which has one or more footnotes must have the tag
<pre>
<references/>
</pre>
to tell MediaWiki where to put the footnotes. This should be in the last section of the page, titled <nowiki>"Notes"</nowiki>.

==Notes==

<references/>

Tomasz Czosnyka

2011-08-11T14:12:15Z

Gosia: /* About Tomasz Czosnyka */

===About Tomasz Czosnyka===

[[File:TomaszCzosnyka.jpg|thumb|right|Tomasz Czosnyka, principle author of the original Gosia code.]]

The original suite of GOSIA codes was developed at the University of Rochester by Tomasz Czosnyka, Douglas Cline and Ching-Yen Wu starting in 1979. T. Czosnyka continued to maintain these codes, in collaboration with Rochester, after he returned to the University of Warsaw in 1987 until his untimely death in October 2006.

User:Hayes

2011-07-13T13:51:17Z

Gosia: Created page with "I am currently the sole developer of the Rachel interface. Please post bug reports for the GUI (and Gosia) on the forum, and I will try to address them quickly. [http://www-use..."

I am currently the sole developer of the Rachel interface. Please post bug reports for the GUI (and Gosia) on the forum, and I will try to address them quickly.

[http://www-user.pas.rochester.edu/~gosia/phpBB3 The Gosia Forum]

==Contact Information==

[http://www.pas.rochester.edu/~hayes/contact.shtml Adam Hayes's website]

Rachel setup file

2011-05-09T12:55:09Z

Gosia: Created page with " One setup file must be created before running Rachel. This is the <tt>.rachel_setup</tt> file, which should be placed either in the working directory or in the home directory. ..."

One setup file must be created before running Rachel. This is the <tt>.rachel_setup</tt> file, which should be placed either in the working directory or in the home directory. The contents of the file are as follows:

<pre>
ELO_EXECUTABLE = elo
GOSIA_EXECUTABLE = /home/someuser/gosia/gosia
BRICC_IDX_FILE = /home/someuser/programs/bricc/BrIccFOV22.idx
BRICC_ICC_FILE = /home/someuser/programs/bricc/BrIccFOV22.icc
RACHEL_DIRECTORY = /home/someuser/programs/rachel
</pre>

The paths should be changed to locate the three files (the Gosia executable and the two BrIcc database files) and the directory in which the Rachel files have been installed.

Gosia

2011-05-09T12:49:34Z

Gosia: /* Downloads */ fixed link to Rachel page

Gosia is the primary analysis code for planning experiments and analyzing data for nuclear structure physics using [[low-energy Coulomb excitation]] experiments. It is suited for both planning experiments and analysis of Coulomb excitation data. The original version was written at the University of Rochester in 1979--1980 by [[Tomasz Czosnyka]], [http://www.pas.rochester.edu/~cline/ D. Cline] and [http://www.turpion.org/links/ca4ad02e0d0fafd70a31c549cf4b3c4c_0.phtml C.Y. Wu]. T. Czosnyka maintained the code until his untimely death in 2006. [[What_is_Gosia | Learn more...]].

==What Gosia can do for the experimenter==

===Experiment planning and simulation===

The GOSIA suite of codes are ideally suited to the design and planning of
heavy-ion induced Coulomb excitation experiments as well as the subsequent
analysis. Coulomb excitation experiments can seem deceptively simple,
especially for few-state problems, leading some experimenters to fall into
analysis traps or collecting data that have less than optimal sensitivity to
the goals of the experiment. The [[experiment_planning | Experiment planning]] page identifies potential pitfalls
in the design and analysis of Coulomb excitation experiments.

===Analysis of Coulomb excitation data===

The motivation for development of Gosia was to
implement the capability to extract measured
<math>E\lambda</math>
matrix elements model-independently from Coulomb excitation data. The first
major task required to achieve this goal was to design experiments covering a
wide dynamic range of Coulomb excitation strength that provide sufficient
experimental data to overdetermine the many unknown matrix elements.
Experimental techniques were developed to achieve this requirement in the
1980's and primarily involved Coulomb excitation measurements over a wide
range of both scattering angle and unexcited nucleus
<math>Z</math> value. The second major task was the development of Gosia to
model-independently extract the matrix elements via a least-squares search of
the data. During the 1980's and early 1990's the ready availability of beam
time at heavy-ion accelerator facilities, the availability of high-efficiency
<math>p-\gamma</math> detector facilities, and access to fast computer systems needed for the Gosia
least-squares searches, enabled the first model-independent extraction of
<math>E\lambda</math>
matrix elements from multiple Coulomb excitation data.

[[Model_independent_analysis | Model-independent analysis]]

[[Model_dependent_analysis | Model-dependent analysis]]

==Downloads==

(Right-click to download source codes.)

* The current version of the [http://www.pas.rochester.edu/%7Ecline/Gosia/Gosia_Manual_20110505.pdf Gosia manual]
* The latest release of [http://www.pas.rochester.edu/%7Ecline/Research/GOSIAcodes/gosia_20081208.10.f Gosia](There is an extended version of Gosia for the Rachel GUI available on the [[Gui | Rachel]] page.)
* The latest release of [http://www.pas.rochester.edu/%7Ecline/Research/GOSIAcodes/gosia2_20081208.11.f Gosia2], for analysing simultaneous Coulomb excitation of target and projectile, using a common normalization.
* [http://www.pas.rochester.edu/~hayes/beta_rachel/rachel.2.0.4.beta.tar Rachel], the graphical interface for Gosia
* [http://www.pas.rochester.edu/%7Ecline/Research/GOSIAcodes/pawel-06-mod.f Pawel], the Gosia version to treat excitation of a nucleus in an isomer state
* [http://www.pas.rochester.edu/%7Ecline/Research/GOSIAcodes/gosia_arm.for ANNL (Anneal)], a special version of Gosia developed by Rich Ibbotson that uses simulated annealing techniques to locate minima
* [http://www.pas.rochester.edu/%7Ecline/Research/GOSIAcodes/sigma.f Sigma], the 2006 Fortran source code for deducing the quadrupole invariants from the E2 matrix elements determined by Gosia
* [http://www.pas.rochester.edu/%7Ecline/Research/GOSIAcodes/gremlin.f GREMLIN], the gamma-ray detector efficiency code developed for use with GOSIA in 1987 by Alexander Kavka

* The set of [http://www.pas.rochester.edu/~hayes/gosia_downloads/fit_demo_2011.tar demonstration files] to accompany the Gosia tutorial in chapter 14 of the Gosia Manual

==Installing Gosia==

Installation of Gosia requires only the following steps:

# Compiling gosia with a Fortran compiler
# Setting the default path or alias to find Gosia, if desired. (See also the path requirements for [[Gui|Rachel]] and the [[rachel setup file]].)

Most standard Fortran 77 compilers will produce a working Gosia executable. GNU
<tt>g77</tt> is recommended, but is becoming deprecated on newer machines. The newer,
more commonly used <tt>gfortran</tt> will also work. Intel Fortran should work, but is not recommended, because future error trapping patches may not work well with the Intel compiler. For more information about
compiling and standard builds, refer to the page [[compiling gosia | Compiling Gosia]].

== User support ==

===The graphical interface for Gosia===

A [[Gui | GUI]] (Graphical User Interface) called Rachel has been developed and is currently undergoing beta-testing. Novice Gosia users can use this interface to develop properly formatted template Gosia input files. These can be modified by comparing the input lines to the Gosia manual instructions, or Gosia can be run entirely from within the GUI for many typical [[simulation (experiment planning)]] and analysis problems.

Chapter 14 of the current [[Gosia Manual]] contains an annotated example input, a flowchart of the procedures that must be run during analysis of data and a tutorial based on a set of files, which can be obtained on the [[Gosia_tutorials]] page.

===The Gosia Forum===

The new gosia forum can be found [http://www-user.pas.rochester.edu/~gosia/phpBB3/index.php here.] As described on the [[Gosia_users'_forum]] page, the Forum is the appropriate place to post requests for help with specific Gosia calculations and for experienced users to give answers and advice.

==Maintenance of the Gosia codes==

The Gosia codes are maintained by the [[Gosia_Steering_Committee]].

==Purpose of the Gosia Wiki==

While the Wiki will eventually mirror much of the content of the [http://www.pas.rochester.edu/%7Ecline/Gosia/2011manual20110428.pdf Gosia Manual], the purpose is not to reproduce the manual in its entirety. The Gosia Manual should still be considered the primary reference for running Gosia. The advantage of the Wiki format is that an unlimited number of pages can be added here by interested users on special topics that are not appropriate for a users' manual. These may include

* Examples of Gosia input and output for common calculations, such as
** input file templates
** common detector definitions
** proper data set normalizations
** fitting strategies for systems with many matrix elements
* Solutions for difficult calculations, such as extreme inverse kinematics cases
* More detailed theory notes

* Examples of the use of [[Pawel]], [[ANNL]] and other codes in the Gosia suite

Wiki users are encouraged to contribute anything that should be of general interest to the Gosia user community and to move solved problems from the Forum if they may be of general interest.

==Help for the Wiki user==

Consult the page [[Wiki_formatting]] for basic formatting instructions to contribute to this Wiki.

==Notes==

<references/>

Gosia

2011-04-28T01:31:14Z

Gosia:

==The Gosia Forum==

The new gosia forum can be found [http://www-user.pas.rochester.edu/~gosia/phpBB3/index.php here.] As described on the [[Gosia_users'_forum]] page, the Forum is the appropriate place to post requests for help with specific Gosia calculations and for experienced users to give answers and advice.

==What is Gosia?==

Gosia is the primary analysis code for planning experiments and analyzing data for [[low-energy Coulomb excitation]] experiments. The original version was written at the University of Rochester in 1979--1980 by [[Tomasz Czosnyka]], who maintained the code until his untimely death in 2006. [[What_is_Gosia | Learn more...]].

==Installing Gosia==

Installation of Gosia requires only the following steps

# Compiling gosia with a Fortran compiler
# Setting the default path or alias to find Gosia, if desired. (See also the path requirements for [[Gui|Rachel]] and the [[rachel setup file]].)

Most standard Fortran 77 compilers will produce a working Gosia executable. GNU
<tt>g77</tt> is recommended, but is becoming deprecated on newer machines. The newer,
more commonly used <tt>gfortran</tt> will also work. Intel Fortran should work, but is not recommended, because future error trapping patches may not work well with the Intel compiler. For more information about
compiling and standard builds, refer to [[compiling gosia]].

== Learning to use Gosia ==

A [[Gui]] called Rachel has been developed and is currently undergoing beta-testing. Novice Gosia users can use this interface to develop properly formatted template Gosia input files. These can be modified by comparing the input lines to the Gosia manual instructions, or Gosia can be run entirely from within the GUI for many typical [[simulation (experiment planning)]] and analysis problems.

Chapter 14 of the current [[Gosia Manual]] contains an annotated example input, a flowchart of the procedures that must be run during analysis of data and a tutorial based on a set of files, which can be obtained on the [[Gosia_tutorials]] page.

== Using Gosia in experiment simulation and planning ==

...

== Using Gosia for data analysis ==

...

== How do I get Gosia? ==

* [http://www.pas.rochester.edu/%7Ecline/Research/GOSIAcodes/gosia_20081208.10.f Download the latest release of Gosia here]. (There is an extended version of Gosia for the Rachel GUI available on the [[Rachel,_a_GUI_for_Gosia]] page.)
* [http://www.pas.rochester.edu/~cline/Research/GOSIAcodes/2009manual20080630.pdf Download the latest Gosia manual]

==Maintenance of the Gosia codes==

The Gosia codes are maintained by the [[Gosia_Steering_Committee]].

==Wiki notes==

=== Getting started ===
* [http://www.mediawiki.org/wiki/Manual:Configuration_settings Configuration settings list]
* [http://www.mediawiki.org/wiki/Manual:FAQ MediaWiki FAQ]
* [https://lists.wikimedia.org/mailman/listinfo/mediawiki-announce MediaWiki release mailing list]

Consult the [http://meta.wikimedia.org/wiki/Help:Contents User's Guide] for information on using the wiki software.

Gosia

2011-04-28T01:30:52Z

Gosia:

<math>
\begin{document}

\[ \int \int_D f(x,y)\,dx\,dy.\]

\end{document}
</math>

<math>
\operatorname{erfc}(x) =
\frac{2}{\sqrt{\pi}} \int_x^{\infty} e^{-t^2}\,dt =
\frac{e^{-x^2}}{x\sqrt{\pi}}\sum_{n=0}^\infty (-1)^n \frac{(2n)!}{n!(2x)^{2n}}
</math>

==The Gosia Forum==

The new gosia forum can be found [http://www-user.pas.rochester.edu/~gosia/phpBB3/index.php here.] As described on the [[Gosia_users'_forum]] page, the Forum is the appropriate place to post requests for help with specific Gosia calculations and for experienced users to give answers and advice.

==What is Gosia?==

Gosia is the primary analysis code for planning experiments and analyzing data for [[low-energy Coulomb excitation]] experiments. The original version was written at the University of Rochester in 1979--1980 by [[Tomasz Czosnyka]], who maintained the code until his untimely death in 2006. [[What_is_Gosia | Learn more...]].

==Installing Gosia==

Installation of Gosia requires only the following steps

# Compiling gosia with a Fortran compiler
# Setting the default path or alias to find Gosia, if desired. (See also the path requirements for [[Gui|Rachel]] and the [[rachel setup file]].)

Most standard Fortran 77 compilers will produce a working Gosia executable. GNU
<tt>g77</tt> is recommended, but is becoming deprecated on newer machines. The newer,
more commonly used <tt>gfortran</tt> will also work. Intel Fortran should work, but is not recommended, because future error trapping patches may not work well with the Intel compiler. For more information about
compiling and standard builds, refer to [[compiling gosia]].

== Learning to use Gosia ==

A [[Gui]] called Rachel has been developed and is currently undergoing beta-testing. Novice Gosia users can use this interface to develop properly formatted template Gosia input files. These can be modified by comparing the input lines to the Gosia manual instructions, or Gosia can be run entirely from within the GUI for many typical [[simulation (experiment planning)]] and analysis problems.

Chapter 14 of the current [[Gosia Manual]] contains an annotated example input, a flowchart of the procedures that must be run during analysis of data and a tutorial based on a set of files, which can be obtained on the [[Gosia_tutorials]] page.

== Using Gosia in experiment simulation and planning ==

...

== Using Gosia for data analysis ==

...

== How do I get Gosia? ==

* [http://www.pas.rochester.edu/%7Ecline/Research/GOSIAcodes/gosia_20081208.10.f Download the latest release of Gosia here]. (There is an extended version of Gosia for the Rachel GUI available on the [[Rachel,_a_GUI_for_Gosia]] page.)
* [http://www.pas.rochester.edu/~cline/Research/GOSIAcodes/2009manual20080630.pdf Download the latest Gosia manual]

==Maintenance of the Gosia codes==

The Gosia codes are maintained by the [[Gosia_Steering_Committee]].

==Wiki notes==

=== Getting started ===
* [http://www.mediawiki.org/wiki/Manual:Configuration_settings Configuration settings list]
* [http://www.mediawiki.org/wiki/Manual:FAQ MediaWiki FAQ]
* [https://lists.wikimedia.org/mailman/listinfo/mediawiki-announce MediaWiki release mailing list]

Consult the [http://meta.wikimedia.org/wiki/Help:Contents User's Guide] for information on using the wiki software.

Gosia

2011-04-28T01:19:38Z

Gosia:

;Example of overleftrightarrow on its own (known to fail):
:<math>\overleftrightarrow{A B}</math>
;Example of \overleftrightarrow with other ams-math functions (known to work correctly):
:<math>\overleftrightarrow{A B} \mathit{i}</math>    or    <math>\overleftrightarrow{A B}</math>

==The Gosia Forum==

The new gosia forum can be found [http://www-user.pas.rochester.edu/~gosia/phpBB3/index.php here.] As described on the [[Gosia_users'_forum]] page, the Forum is the appropriate place to post requests for help with specific Gosia calculations and for experienced users to give answers and advice.

==What is Gosia?==

Gosia is the primary analysis code for planning experiments and analyzing data for [[low-energy Coulomb excitation]] experiments. The original version was written at the University of Rochester in 1979--1980 by [[Tomasz Czosnyka]], who maintained the code until his untimely death in 2006. [[What_is_Gosia | Learn more...]].

==Installing Gosia==

Installation of Gosia requires only the following steps

# Compiling gosia with a Fortran compiler
# Setting the default path or alias to find Gosia, if desired. (See also the path requirements for [[Gui|Rachel]] and the [[rachel setup file]].)

Most standard Fortran 77 compilers will produce a working Gosia executable. GNU
<tt>g77</tt> is recommended, but is becoming deprecated on newer machines. The newer,
more commonly used <tt>gfortran</tt> will also work. Intel Fortran should work, but is not recommended, because future error trapping patches may not work well with the Intel compiler. For more information about
compiling and standard builds, refer to [[compiling gosia]].

== Learning to use Gosia ==

A [[Gui]] called Rachel has been developed and is currently undergoing beta-testing. Novice Gosia users can use this interface to develop properly formatted template Gosia input files. These can be modified by comparing the input lines to the Gosia manual instructions, or Gosia can be run entirely from within the GUI for many typical [[simulation (experiment planning)]] and analysis problems.

Chapter 14 of the current [[Gosia Manual]] contains an annotated example input, a flowchart of the procedures that must be run during analysis of data and a tutorial based on a set of files, which can be obtained on the [[Gosia_tutorials]] page.

== Using Gosia in experiment simulation and planning ==

...

== Using Gosia for data analysis ==

...

== How do I get Gosia? ==

* [http://www.pas.rochester.edu/%7Ecline/Research/GOSIAcodes/gosia_20081208.10.f Download the latest release of Gosia here]. (There is an extended version of Gosia for the Rachel GUI available on the [[Rachel,_a_GUI_for_Gosia]] page.)
* [http://www.pas.rochester.edu/~cline/Research/GOSIAcodes/2009manual20080630.pdf Download the latest Gosia manual]

==Maintenance of the Gosia codes==

The Gosia codes are maintained by the [[Gosia_Steering_Committee]].

==Wiki notes==

=== Getting started ===
* [http://www.mediawiki.org/wiki/Manual:Configuration_settings Configuration settings list]
* [http://www.mediawiki.org/wiki/Manual:FAQ MediaWiki FAQ]
* [https://lists.wikimedia.org/mailman/listinfo/mediawiki-announce MediaWiki release mailing list]

Consult the [http://meta.wikimedia.org/wiki/Help:Contents User's Guide] for information on using the wiki software.

Gosia

2011-04-28T01:19:00Z

Gosia:

;Example of overleftrightarrow on its own (known to fail):
:<math>\overleftrightarrow{A B}</math>
;Example of \overleftrightarrow with other ams-math functions (known to work correctly):
:<math>\overleftrightarrow{A B} \mathit{i}</math>    or    <math>\overleftrightarrow{A B}

==The Gosia Forum==

The new gosia forum can be found [http://www-user.pas.rochester.edu/~gosia/phpBB3/index.php here.] As described on the [[Gosia_users'_forum]] page, the Forum is the appropriate place to post requests for help with specific Gosia calculations and for experienced users to give answers and advice.

==What is Gosia?==

Gosia is the primary analysis code for planning experiments and analyzing data for [[low-energy Coulomb excitation]] experiments. The original version was written at the University of Rochester in 1979--1980 by [[Tomasz Czosnyka]], who maintained the code until his untimely death in 2006. [[What_is_Gosia | Learn more...]].

==Installing Gosia==

Installation of Gosia requires only the following steps

# Compiling gosia with a Fortran compiler
# Setting the default path or alias to find Gosia, if desired. (See also the path requirements for [[Gui|Rachel]] and the [[rachel setup file]].)

Most standard Fortran 77 compilers will produce a working Gosia executable. GNU
<tt>g77</tt> is recommended, but is becoming deprecated on newer machines. The newer,
more commonly used <tt>gfortran</tt> will also work. Intel Fortran should work, but is not recommended, because future error trapping patches may not work well with the Intel compiler. For more information about
compiling and standard builds, refer to [[compiling gosia]].

== Learning to use Gosia ==

A [[Gui]] called Rachel has been developed and is currently undergoing beta-testing. Novice Gosia users can use this interface to develop properly formatted template Gosia input files. These can be modified by comparing the input lines to the Gosia manual instructions, or Gosia can be run entirely from within the GUI for many typical [[simulation (experiment planning)]] and analysis problems.

Chapter 14 of the current [[Gosia Manual]] contains an annotated example input, a flowchart of the procedures that must be run during analysis of data and a tutorial based on a set of files, which can be obtained on the [[Gosia_tutorials]] page.

== Using Gosia in experiment simulation and planning ==

...

== Using Gosia for data analysis ==

...

== How do I get Gosia? ==

* [http://www.pas.rochester.edu/%7Ecline/Research/GOSIAcodes/gosia_20081208.10.f Download the latest release of Gosia here]. (There is an extended version of Gosia for the Rachel GUI available on the [[Rachel,_a_GUI_for_Gosia]] page.)
* [http://www.pas.rochester.edu/~cline/Research/GOSIAcodes/2009manual20080630.pdf Download the latest Gosia manual]

==Maintenance of the Gosia codes==

The Gosia codes are maintained by the [[Gosia_Steering_Committee]].

==Wiki notes==

=== Getting started ===
* [http://www.mediawiki.org/wiki/Manual:Configuration_settings Configuration settings list]
* [http://www.mediawiki.org/wiki/Manual:FAQ MediaWiki FAQ]
* [https://lists.wikimedia.org/mailman/listinfo/mediawiki-announce MediaWiki release mailing list]

Consult the [http://meta.wikimedia.org/wiki/Help:Contents User's Guide] for information on using the wiki software.

Gosia

2011-04-28T01:17:19Z

Gosia:

<math>\frac{dy}{dx}\,\!</math>

==The Gosia Forum==

The new gosia forum can be found [http://www-user.pas.rochester.edu/~gosia/phpBB3/index.php here.] As described on the [[Gosia_users'_forum]] page, the Forum is the appropriate place to post requests for help with specific Gosia calculations and for experienced users to give answers and advice.

==What is Gosia?==

Gosia is the primary analysis code for planning experiments and analyzing data for [[low-energy Coulomb excitation]] experiments. The original version was written at the University of Rochester in 1979--1980 by [[Tomasz Czosnyka]], who maintained the code until his untimely death in 2006. [[What_is_Gosia | Learn more...]].

==Installing Gosia==

Installation of Gosia requires only the following steps

# Compiling gosia with a Fortran compiler
# Setting the default path or alias to find Gosia, if desired. (See also the path requirements for [[Gui|Rachel]] and the [[rachel setup file]].)

Most standard Fortran 77 compilers will produce a working Gosia executable. GNU
<tt>g77</tt> is recommended, but is becoming deprecated on newer machines. The newer,
more commonly used <tt>gfortran</tt> will also work. Intel Fortran should work, but is not recommended, because future error trapping patches may not work well with the Intel compiler. For more information about
compiling and standard builds, refer to [[compiling gosia]].

== Learning to use Gosia ==

A [[Gui]] called Rachel has been developed and is currently undergoing beta-testing. Novice Gosia users can use this interface to develop properly formatted template Gosia input files. These can be modified by comparing the input lines to the Gosia manual instructions, or Gosia can be run entirely from within the GUI for many typical [[simulation (experiment planning)]] and analysis problems.

Chapter 14 of the current [[Gosia Manual]] contains an annotated example input, a flowchart of the procedures that must be run during analysis of data and a tutorial based on a set of files, which can be obtained on the [[Gosia_tutorials]] page.

== Using Gosia in experiment simulation and planning ==

...

== Using Gosia for data analysis ==

...

== How do I get Gosia? ==

* [http://www.pas.rochester.edu/%7Ecline/Research/GOSIAcodes/gosia_20081208.10.f Download the latest release of Gosia here]. (There is an extended version of Gosia for the Rachel GUI available on the [[Rachel,_a_GUI_for_Gosia]] page.)
* [http://www.pas.rochester.edu/~cline/Research/GOSIAcodes/2009manual20080630.pdf Download the latest Gosia manual]

==Maintenance of the Gosia codes==

The Gosia codes are maintained by the [[Gosia_Steering_Committee]].

==Wiki notes==

=== Getting started ===
* [http://www.mediawiki.org/wiki/Manual:Configuration_settings Configuration settings list]
* [http://www.mediawiki.org/wiki/Manual:FAQ MediaWiki FAQ]
* [https://lists.wikimedia.org/mailman/listinfo/mediawiki-announce MediaWiki release mailing list]

Consult the [http://meta.wikimedia.org/wiki/Help:Contents User's Guide] for information on using the wiki software.

Gosia

2011-04-28T01:15:35Z

Gosia:

: <math>\int_a^b \! f(x)\,dx \,</math>

==The Gosia Forum==

The new gosia forum can be found [http://www-user.pas.rochester.edu/~gosia/phpBB3/index.php here.] As described on the [[Gosia_users'_forum]] page, the Forum is the appropriate place to post requests for help with specific Gosia calculations and for experienced users to give answers and advice.

==What is Gosia?==

Gosia is the primary analysis code for planning experiments and analyzing data for [[low-energy Coulomb excitation]] experiments. The original version was written at the University of Rochester in 1979--1980 by [[Tomasz Czosnyka]], who maintained the code until his untimely death in 2006. [[What_is_Gosia | Learn more...]].

==Installing Gosia==

Installation of Gosia requires only the following steps

# Compiling gosia with a Fortran compiler
# Setting the default path or alias to find Gosia, if desired. (See also the path requirements for [[Gui|Rachel]] and the [[rachel setup file]].)

Most standard Fortran 77 compilers will produce a working Gosia executable. GNU
<tt>g77</tt> is recommended, but is becoming deprecated on newer machines. The newer,
more commonly used <tt>gfortran</tt> will also work. Intel Fortran should work, but is not recommended, because future error trapping patches may not work well with the Intel compiler. For more information about
compiling and standard builds, refer to [[compiling gosia]].

== Learning to use Gosia ==

A [[Gui]] called Rachel has been developed and is currently undergoing beta-testing. Novice Gosia users can use this interface to develop properly formatted template Gosia input files. These can be modified by comparing the input lines to the Gosia manual instructions, or Gosia can be run entirely from within the GUI for many typical [[simulation (experiment planning)]] and analysis problems.

Chapter 14 of the current [[Gosia Manual]] contains an annotated example input, a flowchart of the procedures that must be run during analysis of data and a tutorial based on a set of files, which can be obtained on the [[Gosia_tutorials]] page.

== Using Gosia in experiment simulation and planning ==

...

== Using Gosia for data analysis ==

...

== How do I get Gosia? ==

* [http://www.pas.rochester.edu/%7Ecline/Research/GOSIAcodes/gosia_20081208.10.f Download the latest release of Gosia here]. (There is an extended version of Gosia for the Rachel GUI available on the [[Rachel,_a_GUI_for_Gosia]] page.)
* [http://www.pas.rochester.edu/~cline/Research/GOSIAcodes/2009manual20080630.pdf Download the latest Gosia manual]

==Maintenance of the Gosia codes==

The Gosia codes are maintained by the [[Gosia_Steering_Committee]].

==Wiki notes==

=== Getting started ===
* [http://www.mediawiki.org/wiki/Manual:Configuration_settings Configuration settings list]
* [http://www.mediawiki.org/wiki/Manual:FAQ MediaWiki FAQ]
* [https://lists.wikimedia.org/mailman/listinfo/mediawiki-announce MediaWiki release mailing list]

Consult the [http://meta.wikimedia.org/wiki/Help:Contents User's Guide] for information on using the wiki software.

Gosia

2011-04-28T01:14:29Z

Gosia:

<math>
\iiint\limits_E \, dx\,dy\,dz
</math>

==The Gosia Forum==

The new gosia forum can be found [http://www-user.pas.rochester.edu/~gosia/phpBB3/index.php here.] As described on the [[Gosia_users'_forum]] page, the Forum is the appropriate place to post requests for help with specific Gosia calculations and for experienced users to give answers and advice.

==What is Gosia?==

Gosia is the primary analysis code for planning experiments and analyzing data for [[low-energy Coulomb excitation]] experiments. The original version was written at the University of Rochester in 1979--1980 by [[Tomasz Czosnyka]], who maintained the code until his untimely death in 2006. [[What_is_Gosia | Learn more...]].

==Installing Gosia==

Installation of Gosia requires only the following steps

# Compiling gosia with a Fortran compiler
# Setting the default path or alias to find Gosia, if desired. (See also the path requirements for [[Gui|Rachel]] and the [[rachel setup file]].)

Most standard Fortran 77 compilers will produce a working Gosia executable. GNU
<tt>g77</tt> is recommended, but is becoming deprecated on newer machines. The newer,
more commonly used <tt>gfortran</tt> will also work. Intel Fortran should work, but is not recommended, because future error trapping patches may not work well with the Intel compiler. For more information about
compiling and standard builds, refer to [[compiling gosia]].

== Learning to use Gosia ==

A [[Gui]] called Rachel has been developed and is currently undergoing beta-testing. Novice Gosia users can use this interface to develop properly formatted template Gosia input files. These can be modified by comparing the input lines to the Gosia manual instructions, or Gosia can be run entirely from within the GUI for many typical [[simulation (experiment planning)]] and analysis problems.

Chapter 14 of the current [[Gosia Manual]] contains an annotated example input, a flowchart of the procedures that must be run during analysis of data and a tutorial based on a set of files, which can be obtained on the [[Gosia_tutorials]] page.

== Using Gosia in experiment simulation and planning ==

...

== Using Gosia for data analysis ==

...

== How do I get Gosia? ==

* [http://www.pas.rochester.edu/%7Ecline/Research/GOSIAcodes/gosia_20081208.10.f Download the latest release of Gosia here]. (There is an extended version of Gosia for the Rachel GUI available on the [[Rachel,_a_GUI_for_Gosia]] page.)
* [http://www.pas.rochester.edu/~cline/Research/GOSIAcodes/2009manual20080630.pdf Download the latest Gosia manual]

==Maintenance of the Gosia codes==

The Gosia codes are maintained by the [[Gosia_Steering_Committee]].

==Wiki notes==

=== Getting started ===
* [http://www.mediawiki.org/wiki/Manual:Configuration_settings Configuration settings list]
* [http://www.mediawiki.org/wiki/Manual:FAQ MediaWiki FAQ]
* [https://lists.wikimedia.org/mailman/listinfo/mediawiki-announce MediaWiki release mailing list]

Consult the [http://meta.wikimedia.org/wiki/Help:Contents User's Guide] for information on using the wiki software.

Gosia

2011-04-28T00:47:49Z

Gosia:

<math>
\operatorname{erfc}(x) =
\frac{2}{\sqrt{\pi}} \int_x^{\infty} e^{-t^2}\,dt =
\frac{e^{-x^2}}{x\sqrt{\pi}}\sum_{n=0}^\infty (-1)^n \frac{(2n)!}{n!(2x)^{2n}}
</math>

==The Gosia Forum==

The new gosia forum can be found [http://www-user.pas.rochester.edu/~gosia/phpBB3/index.php here.] As described on the [[Gosia_users'_forum]] page, the Forum is the appropriate place to post requests for help with specific Gosia calculations and for experienced users to give answers and advice.

==What is Gosia?==

Gosia is the primary analysis code for planning experiments and analyzing data for [[low-energy Coulomb excitation]] experiments. The original version was written at the University of Rochester in 1979--1980 by [[Tomasz Czosnyka]], who maintained the code until his untimely death in 2006. [[What_is_Gosia | Learn more...]].

==Installing Gosia==

Installation of Gosia requires only the following steps

# Compiling gosia with a Fortran compiler
# Setting the default path or alias to find Gosia, if desired. (See also the path requirements for [[Gui|Rachel]] and the [[rachel setup file]].)

Most standard Fortran 77 compilers will produce a working Gosia executable. GNU
<tt>g77</tt> is recommended, but is becoming deprecated on newer machines. The newer,
more commonly used <tt>gfortran</tt> will also work. Intel Fortran should work, but is not recommended, because future error trapping patches may not work well with the Intel compiler. For more information about
compiling and standard builds, refer to [[compiling gosia]].

== Learning to use Gosia ==

A [[Gui]] called Rachel has been developed and is currently undergoing beta-testing. Novice Gosia users can use this interface to develop properly formatted template Gosia input files. These can be modified by comparing the input lines to the Gosia manual instructions, or Gosia can be run entirely from within the GUI for many typical [[simulation (experiment planning)]] and analysis problems.

Chapter 14 of the current [[Gosia Manual]] contains an annotated example input, a flowchart of the procedures that must be run during analysis of data and a tutorial based on a set of files, which can be obtained on the [[Gosia_tutorials]] page.

== Using Gosia in experiment simulation and planning ==

...

== Using Gosia for data analysis ==

...

== How do I get Gosia? ==

* [http://www.pas.rochester.edu/%7Ecline/Research/GOSIAcodes/gosia_20081208.10.f Download the latest release of Gosia here]. (There is an extended version of Gosia for the Rachel GUI available on the [[Rachel,_a_GUI_for_Gosia]] page.)
* [http://www.pas.rochester.edu/~cline/Research/GOSIAcodes/2009manual20080630.pdf Download the latest Gosia manual]

==Maintenance of the Gosia codes==

The Gosia codes are maintained by the [[Gosia_Steering_Committee]].

==Wiki notes==

=== Getting started ===
* [http://www.mediawiki.org/wiki/Manual:Configuration_settings Configuration settings list]
* [http://www.mediawiki.org/wiki/Manual:FAQ MediaWiki FAQ]
* [https://lists.wikimedia.org/mailman/listinfo/mediawiki-announce MediaWiki release mailing list]

Consult the [http://meta.wikimedia.org/wiki/Help:Contents User's Guide] for information on using the wiki software.

Rachel GUI

2011-04-26T15:29:22Z

Gosia:

==General description==

[[File:Guisnapshot.png|thumb|right|A snapshot of the alpha version GUI.]]

The Rachel interface facilitates [http://www.pas.rochester.edu/~hayes/beta_rachel/calculation_in_2_minutes.html fast setup of Gosia calculations] and data analysis using push-button controls with guided input and 'plain language' warnings during setup. The GUI (Graphical User Interface) has been developed for a modified Gosia version based on release 20081208.10, called 20081208.10.a. It is currently undergoing beta-testing. The latest beta-test version can be [downloaded here]. [http://www.students.yorku.ca/~rachelo/ Rachel] is written in Python 2.6 and is expected to be Python 2.7 compliant. It runs under Linux and Unix (OS X) machines, but is ''not'' Windows compatible.

A 64-bit processor is desirable, because Gosia runs fastest and most accurately on 64-bit machines. The release-candidate version, expected in early 2011, will have many structural changes in the code, allowing more automation, more general particle detector options and fewer user prompts for standard operations.

[[File:Typicalgosiainput.png|thumb|right|Excerpt of a typical Gosia input for a collective system.]]While gosia.20081208 incorporates the [[OP,BRIC]] command to read internal conversion data from BrIcc data files, removing the burden of entering ICC interpolation data by the user, the GUI allows the greatest possible automation by prompts for pre-defined or user-defined germanium detector crystals or arrays, calculation of Zeigler stopping power data, optimum meshpoint selection for yield calculations, transformation of rectilinear detector definition to laboratory-frame spherical-polar interpolation coordinates, etc. For standard problems, the burden on the user is reduced to entering nuclear level and matrix data for simulations (including optional data-set simulation) and real experimental data for fitting. For collective systems, where the matrix definition often includes several hundred lines of matrix elements, rotor parameters can be given to reduce the input definition considerably. This also eliminates the need for the user to re-index the reduced matrix elements by hand as changes are made to the matrix.

==How to get the Rachel package==

The Rachel tar archive of version 2.0.2.beta is available on a [http://www.pas.rochester.edu/~hayes/beta_rachel/rachel.2.0.2.beta.tar temporary download site]. This includes an ''extended'' version of Gosia that makes use of file number 99 for amplitude vs. time data [[File:Amplitudes.png|thumb|right|Excitation amplitude as a function of the time-like variable 'w' generated by Gosia via the Rachel GUI.]] and collision function output for optional plotting functions in the GUI. Except for these two functions, the GUI can be run with the current version of Gosia, 20081208.10.

==GUI version backward compatibility==

As of version 2.0.0.beta, the GUI preserves backward-compatibility of the saved session files, so that users can upgrade the GUI without having to rebuild the session.

==Beta version capabilities==

* Azimuthally symmetric particle detection
* Partitioning particle-detector data by azimuthal angle
* Graphical definition of rectilinear or irregular-shaped particle detectors [[File:rectilineardetectorexample.png|thumb|right|A user-defined rectilinear detector automatically transformed into the laboratory spherical polar coordinates for Gosia. Black edge is the "exact" shape; red lines are the azimuthal range samples passed to Gosia.]]
* 4pi experiments (e.g. experiments with no particle detection)
* Normal or inverse kinematics experiments
* A user-expandable library of standard Ge crystals e.g. Gammasphere
* Data from summed 4pi arrays
* Efficiency-corrected gamma-ray data only
* Experiment planning aids
** Generation of simulated data based on a proposed beam run
** Optional quasi-Gaussian random scatter in simulated data
** Estimated precision of the proposed measurement
* Accuracy testing to determine if Gosia will be appropriate for a planned experiment
* Fitting and correlated error estimations
* Reading level schemes and gamma-ray data from Radware AGS files and including
** Branching ratio data
** Previously measured EM matrix elements, including the measured phases
** Lifetime data for ''excited states'' (not the ground state lifetime)
** Mixing ratios
* Several supported data file formats
** [Radware] AGS format
** [[Rachel format nuclear data files]]
** Gosia format (experimental yield and fitted matrix element data)
* Instantly generating plots of experimental vs. predicted yields via gnuplot [[File:plottingexample.png|thumb|right|A zoomed view of a plot of yield vs. spin in a rotational band generated from the Gosia output and experimental data.]]
* Automated generation of stopping power and internal conversion input for Gosia
* Push-button controls
* A searchable help function
* Saving the entire session to a file
* Undo/Redo of most functions and crash recovery

Using Rachel, the user will be able to build a level scheme from either a hand-written text file and/or a Radware AGS file, define the experimental setup and import relative-efficiency-corrected gamma-ray data from Rachel-format text and/or AGS files. The matrix and fit parameters can be defined by push-buttons and prompts or imported from a Rachel-format matrix file. Gosia will then be run by push-button GUI controls. Most prompts will be preceded by help information, suggestions, or warnings.

For experiments that fit the capabilities above, the user can view the Gosia inputs to learn the format, but will not be required to type any input code. Experienced Gosia users can export a GUI-generated input skeleton file and abandon the GUI to use the more advanced capabilities of Gosia.

==Upgrade strategy==

Upgrades are being made to incorporate all of the capabilities of Gosia, with a focus on the most commonly used features. Prioritization of the upgrades will be directed primarily by [[software upgrade voting|votes]] cast by the user community. Users are encouraged to submit requested upgrades to handle present features of Gosia that are not already included, ''as well as new functions that Gosia does not handle, but which could be incorporated via the GUI.''

===Planned upgrades===

There are currently several planned upgrades that will likely be incorporated in the first [rachel release candidate] version. The upgrade plan and priorities will be changed based on user feedback and bug reports. An will be created early in the upgrade process so that users can rank or add their desired upgrades to steer the software development.

# Stopping power calculations for Z>92. (Currently, <tt>rachel</tt> uses the Zeigler tables, which are limited to Z<93.)
# Improved graphics including
## a transition from matplotlib graphics to pyGtk in the level scheme window
## clickable objects in the level scheme diagram
# Addition of Ge clusters with libraries of array geometries (Gammasphere, Agata, etc.)
# Plot functions to visualize fit conflicts in the data
# Improved coding structure for Ge detectors. This will reduce the burden on the user by automatically updating the data set as the level scheme and matrix change.
# Optional setting of symbolic matrix definitions, whereas now the matrix is stored numerically. This will allow greater user control by allowing tuning of model parameters, e.g. <gam|E2|gsb> = M1 + a*M2, where 'a' can be adjusted by the user.
# Optional simple distributed processing of some functions. In the first release candidate, this will allow the user to set a maximum number of independent processes to speed up separable calculations (integrated yields, corrected yields and experiment simulations) by issuing a separate call to Gosia for each process<ref>True distributed computing is not handled by the current version of Gosia</ref>.

==Tutorial videos and run-time help==

The Rachel manual has been incorporated into the [[Gosia manual]]. Tutorial videos generated with a pre-beta version are now available. While the GUI control panel and some user input and output formats
have changed slightly, most of these changes should be obvious during operation.

Run-time help is available using the Help button. Users are encouraged to submit suggestions for additional help data.

===The basics===

# To install Rachel and get it running for the first time, watch [http://www.pas.rochester.edu/~hayes/beta_rachel/rachel_installation.html Rachel Installation].
# A short video on [http://www.pas.rochester.edu/~hayes/beta_rachel/undo_redo.html the undo/redo buttons].
# How to [http://www.pas.rochester.edu/~hayes/beta_rachel/crash_recovery.html recover data from a crashed session].
# First steps: [http://www.pas.rochester.edu/~hayes/beta_rachel/reading_level_schemes.html Reading level schemes.]
# How to [http://www.pas.rochester.edu/~hayes/beta_rachel/add_matrix_non_collective.html add individual matrix elements]. This is most applicable to small, non-collective systems, such as the one in the sample file example2levels.txt file distributed with Rachel.
# How to [http://www.pas.rochester.edu/~hayes/beta_rachel/add_matrix_collective.html add matrix elements systematically], i.e., for collective nuclei with rotational bands.
# How to [http://www.pas.rochester.edu/~hayes/beta_rachel/setting_up_calculations.html define experiments, Ge detectors and calculate predicted yields]. This video will show how to define experimental detector setup, data partitions and make instant plots as well.
# A [http://www.pas.rochester.edu/~hayes/beta_rachel/basic_fit_example.html very basic example of fitting] including a correlated error calculation. The entire video is about 30 minutes long. You can follow along using the GUI on your system and the example files shown in the video, which are included with your Rachel distribution in the .../example_files/ subdirectory.
# More advanced selection of fit parameters are shown in this video on [http://www.pas.rochester.edu/~hayes/beta_rachel/experiment_planning_2.html experiment planning].

===Experiment planning and accuracy testing tools===

# [http://www.pas.rochester.edu/~hayes/beta_rachel/accuracy_testing.html Testing the accuracy] of your Gosia calculations and the applicability of Gosia to a planned experiment.
# Semiclassical Coulomb excitation codes have inherent adiabaticity and eccentricity limits. [http://www.pas.rochester.edu/~hayes/beta_rachel/adiabaticity_limit.html This video] shows how to test for these limits with an experiment that would ''not'' be appropriate for Gosia.
# [http://www.pas.rochester.edu/~hayes/beta_rachel/experiment_planning.html Generating simulated data]. The errors in the simulated data are based on Poisson statistics and the expected number of days, beam current, etc. to estimate your ability to observe desired gamma-ray yields and to fit matrix elements to the observed yields. The present beta version applies ''optionally'' a quasi-gaussian random scatter of the predicted yield data [http://www.pas.rochester.edu/~hayes/beta_rachel/experiment_planning_2.html as demonstrated in this video] to better aid in predicting expected precision of fitted matrix elements. Watch this supplemental video to see how this works. You should also watch the [http://www.pas.rochester.edu/~hayes/beta_rachel/accuracy_testing.html accuracy testing video] to see if Gosia would be an appropriate analysis tool for your planned experiment.

==Bug reports==

Users are encouraged to submit bug reports via the [http://www-user.pas.rochester.edu/~gosia/phpBB3/ Gosia forum]. The operation that revealed the bug should be reported, and the session file saved before this operation should be included if possible.

==Notes==

==Links==

[http://www.pas.rochester.edu/~hayes/beta_rachel/main_ad.html The Rachel advertising video]

<references/>

File:Chrysanthemum.jpg

2011-04-26T15:25:32Z

Gosia: test

test

Gosia

2011-04-26T03:21:09Z

Gosia:

Gosia

2011-04-25T08:48:12Z

Gosia:

<math> 0 </math>

==The Gosia Forum==

The new gosia forum can be found [http://www-user.pas.rochester.edu/~gosia/phpBB3/index.php here.] As described on the [[Gosia_users'_forum]] page, the Forum is the appropriate place to post requests for help with specific Gosia calculations and for experienced users to give answers and advice.

==What is Gosia?==

Gosia is the primary analysis code for planning experiments and analyzing data for [[low-energy Coulomb excitation]] experiments. The original version was written at the University of Rochester in 1979--1980 by [[Tomasz Czosnyka]], who maintained the code until his untimely death in 2006. [[What_is_Gosia | Learn more...]].

==Installing Gosia==

Installation of Gosia requires only the following steps

# Compiling gosia with a Fortran compiler
# Setting the default path or alias to find Gosia, if desired. (See also the path requirements for [[Gui|Rachel]] and the [[rachel setup file]].)

Most standard Fortran 77 compilers will produce a working Gosia executable. GNU
<tt>g77</tt> is recommended, but is becoming deprecated on newer machines. The newer,
more commonly used <tt>gfortran</tt> will also work. Intel Fortran should work, but is not recommended, because future error trapping patches may not work well with the Intel compiler. For more information about
compiling and standard builds, refer to [[compiling gosia]].

== Learning to use Gosia ==

A [[Gui]] called Rachel has been developed and is currently undergoing beta-testing. Novice Gosia users can use this interface to develop properly formatted template Gosia input files. These can be modified by comparing the input lines to the Gosia manual instructions, or Gosia can be run entirely from within the GUI for many typical [[simulation (experiment planning)]] and analysis problems.

Chapter 14 of the current [[Gosia Manual]] contains an annotated example input, a flowchart of the procedures that must be run during analysis of data and a tutorial based on a set of files, which can be obtained on the [[Gosia_tutorials]] page.

== Using Gosia in experiment simulation and planning ==

...

== Using Gosia for data analysis ==

...

== How do I get Gosia? ==

* [http://www.pas.rochester.edu/%7Ecline/Research/GOSIAcodes/gosia_20081208.10.f Download the latest release of Gosia here]. (There is an extended version of Gosia for the Rachel GUI available on the [[Rachel,_a_GUI_for_Gosia]] page.)
* [http://www.pas.rochester.edu/~cline/Research/GOSIAcodes/2009manual20080630.pdf Download the latest Gosia manual]

==Maintenance of the Gosia codes==

The Gosia codes are maintained by the [[Gosia_Steering_Committee]].

==Wiki notes==

=== Getting started ===
* [http://www.mediawiki.org/wiki/Manual:Configuration_settings Configuration settings list]
* [http://www.mediawiki.org/wiki/Manual:FAQ MediaWiki FAQ]
* [https://lists.wikimedia.org/mailman/listinfo/mediawiki-announce MediaWiki release mailing list]

Consult the [http://meta.wikimedia.org/wiki/Help:Contents User's Guide] for information on using the wiki software.

Gosia

2011-04-25T08:47:58Z

Gosia:

<math></math>

==The Gosia Forum==

The new gosia forum can be found [http://www-user.pas.rochester.edu/~gosia/phpBB3/index.php here.] As described on the [[Gosia_users'_forum]] page, the Forum is the appropriate place to post requests for help with specific Gosia calculations and for experienced users to give answers and advice.

==What is Gosia?==

Gosia is the primary analysis code for planning experiments and analyzing data for [[low-energy Coulomb excitation]] experiments. The original version was written at the University of Rochester in 1979--1980 by [[Tomasz Czosnyka]], who maintained the code until his untimely death in 2006. [[What_is_Gosia | Learn more...]].

==Installing Gosia==

Installation of Gosia requires only the following steps

# Compiling gosia with a Fortran compiler
# Setting the default path or alias to find Gosia, if desired. (See also the path requirements for [[Gui|Rachel]] and the [[rachel setup file]].)

Most standard Fortran 77 compilers will produce a working Gosia executable. GNU
<tt>g77</tt> is recommended, but is becoming deprecated on newer machines. The newer,
more commonly used <tt>gfortran</tt> will also work. Intel Fortran should work, but is not recommended, because future error trapping patches may not work well with the Intel compiler. For more information about
compiling and standard builds, refer to [[compiling gosia]].

== Learning to use Gosia ==

A [[Gui]] called Rachel has been developed and is currently undergoing beta-testing. Novice Gosia users can use this interface to develop properly formatted template Gosia input files. These can be modified by comparing the input lines to the Gosia manual instructions, or Gosia can be run entirely from within the GUI for many typical [[simulation (experiment planning)]] and analysis problems.

Chapter 14 of the current [[Gosia Manual]] contains an annotated example input, a flowchart of the procedures that must be run during analysis of data and a tutorial based on a set of files, which can be obtained on the [[Gosia_tutorials]] page.

== Using Gosia in experiment simulation and planning ==

...

== Using Gosia for data analysis ==

...

== How do I get Gosia? ==

* [http://www.pas.rochester.edu/%7Ecline/Research/GOSIAcodes/gosia_20081208.10.f Download the latest release of Gosia here]. (There is an extended version of Gosia for the Rachel GUI available on the [[Rachel,_a_GUI_for_Gosia]] page.)
* [http://www.pas.rochester.edu/~cline/Research/GOSIAcodes/2009manual20080630.pdf Download the latest Gosia manual]

==Maintenance of the Gosia codes==

The Gosia codes are maintained by the [[Gosia_Steering_Committee]].

==Wiki notes==

=== Getting started ===
* [http://www.mediawiki.org/wiki/Manual:Configuration_settings Configuration settings list]
* [http://www.mediawiki.org/wiki/Manual:FAQ MediaWiki FAQ]
* [https://lists.wikimedia.org/mailman/listinfo/mediawiki-announce MediaWiki release mailing list]

Consult the [http://meta.wikimedia.org/wiki/Help:Contents User's Guide] for information on using the wiki software.

Gosia

2011-04-25T08:37:24Z

Gosia: Protected "Gosia" ([edit=autoconfirmed] (indefinite) [move=autoconfirmed] (indefinite))

Gosia

2011-04-25T04:46:38Z

Gosia: