To generate Calypso MC data from an installation (run) directory:

1. edit the G4FaserAlg/test/G4FaserAlgConfig_Test.py file to setup the job ....the default generator is particle-gun; it can also read EVNT files but note that the Veto is far away from (0,0,0) where most ATLAS generators put things by default ....there are examples of single-particle (muon or electron), cosmic-rays and decay-in-flight. The parameters of each can be changed by passing keyword arguments ....read the comments carefully as a few other things have to be changed in the job options to switch between internal generator and generator data-file ....the geometry can be changed on the command line, using the GeoModel.FaserVersion flag and IOVDb.GlobalTag flags. See the tests in the CMakeLists.txt file for examples

2. source ./setup.sh

3. G4FaserAlgConfig_Test.py

(setup.sh will put the script in your path)