remove experiment specific configurations
Adding in a provision to specify a buffer box that goes around the cryostat, to increase the CRY rate that is fed to GEANT4. Saving only particles that geometrically cross the TPC doesn't consider the rate loss due to multiple scattering effects one encounters in the GEANT step. A buffer box will compensate for this loss
larsim v03_02_04 for larsoft v03_04_01
larsim v03_02_05 for larsoft v03_04_02
larsim v03_02_06 for larsoft v03_04_03