Rachel GUI

===Rachel, a GUI for Gosia===

[[Image:~/mediawiki/images/Gui/gui_snapshot.png|thumb|right|A snapshot of the alpha version]]

There is a GUI (Graphical User Interface) for Gosia version 20081208.10, which is currently undergoing alpha-testing.  A beta-test release is expected in February, 2011.  Rachel is written in Python 2.6 and is expected to be Python 2.7 compliant.  It will run on Linux or Unix (OS X) machines.  A 64-bit processor is desirable, because Gosia runs fastest and most accurately on a 64-bit machine.

==Beta version capabilities==

* Azimuthally symmetric particle detection
* 4pi experiments (no particle detection)
* Normal or inverse kinematics experiments
* User-expandable library of standard Ge crystals e.g. Gammasphere
* Data from summed 4pi arrays
* Efficiency-corrected gamma-ray data only
* Predictions for experiment planning
* 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 format text files
* Importing branching ratio data
* Generating simulated data, e.g. for estimating the expected precision of planned experiments
* Instantly generating plots of experimental vs. predicted yields via gnuplot
* 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

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.  Advanced Gosia users can export a GUI-generated input file and abandon the GUI to use the more advanced capabilities of Gosia.

==How to get the beta version== 

When the beta version is released, a link to the code, manual and tutorial videos will be posted here.