This is the standard data analysis software for Hall A at Jefferson Lab. The current stable version is 1.5.29.

The analyzer is an object-oriented, highly modular and extensible framework built on top of the ROOT framework from CERN. Classes are available for the most common analysis tasks involving data from the standard Hall A experimental equipment, in particular the HRS spectrometers and detectors. Standard physics calculations for single arm (e,e'), conincidence (e,e'X) and photoproduction reactions are available, as well as for auxiliary tasks such as energy loss corrections, vertex position calculations, etc.

A Software Development Kit (SDK) is included that provides users with a rapid development environment for building experiment-specific extension libraries. One can quickly implement new detectors, physics computation modules and even entire spectrometers.

Currently, major efforts are underway (1) to develop an improved analysis framework jointly with Hall C which will be based on the current Hall A software, and (2) to update the analyzer for the more demanding analysis requirements of 12 GeV experiments.

Further information can be found online here.

The analyzer may be compiled with either make or SCons. The following software is prerequisite for analyzer 1.5

• ROOT version 4 or higher, latest version (5.34) strongly recommended. root-config must be in your PATH.

For analyzer 1.6 or higher, you will also need

• EVIO version 4.0 or higher. EVIO_INCDIR and EVIO_LIBDIR must be set to point to the EVIO installation locations.

make

Ensure that you have SCons version is 2.1.0 or higher. Then simply do

scons

To do the equivalent of "make clean", do scons -c To compile with debug capabilities, do scons debug=1

To participate in development, please contact Ole Hansen.

Note that issues may be submitted to the github issue tracker by anyone. For issues that may be of general interest, you are strongly encouraged to use the issue tracker system. In this way, all active developers are notified and able to respond quickly.