Software Detector Simulation
SoLID detector simulation program "solid_gemc" is based on "GEMC 2.x" with additional hit process routine and outputs for all detector systems in SoLID.
It's located SoLID repository https://jlabsvn.jlab.org/svnroot/solid/solid_gemc2 with source codes and detector configuration, field, scripts etc.
You need both the jlab framework and SoLID repository before you can compile and run solid_gemc, refer to the quick start section
The "set_solid" script is used to setup env
general note (Please read this!)
general note for geometry, materiel, mirror, hit processing, calling gemc as library with added functionally etc
They are stored here
sort by "Last modified" to see latest
compile and run
Once you complete the setup procedure, you can now compile "solid_gemc"
source your set_solid if you haven't done so cd $SoLID_GEMC/source/$GEMC_VERSION scons OPT=1 (then go to a clean terminal and source your set_solid so that "solid_gemc" can found in default PATH) solid_gemc (a empty graphic window with simulation setup should show up and confirm it's working, then you can move on full or subsystem simulation)
All subsystems have their own "production" version directories "ec,hgc,lgc,gem,mrpc,spd,magnet,baffle,target,beamline,absorber" at "https://jlabsvn.jlab.org/svnroot/solid/solid_gemc2/geometry/"
Run full SoLID simulation in graphic mode with all subsystems together by
source your set_solid cd $SoLID_GEMC/script solid_gemc solid_PVDIS_LD2_full.gcard solid_gemc solid_SIDIS_He3_full.gcard solid_gemc solid_SIDIS_NH3_full.gcard solid_gemc solid_JPsi_LH2_full.gcard
"solid_gemc" can be used for individual sub-detector systems and the whole detector simulation.
Each of sub-detector systems can do simulation independently and ready to merge it back into the whole system simulation.
They are considered "devel" version and located in their individual directories and person responsible as below
https://jlabsvn.jlab.org/svnroot/solid/subsystem/ec/ec_segmented_solid_gemc and https://jlabsvn.jlab.org/svnroot/solid/subsystem/ec/analysis/readme https://jlabsvn.jlab.org/svnroot/solid/subsystem/hgc/hgc_solid_gemc and https://jlabsvn.jlab.org/svnroot/solid/subsystem/hgc/analysis/readme https://jlabsvn.jlab.org/svnroot/solid/subsystem/lgc/lgc_solid_gemc and https://jlabsvn.jlab.org/svnroot/solid/subsystem/lgc/analysis/readme https://jlabsvn.jlab.org/svnroot/solid/subsystem/gem/gem_solid_gemc and https://jlabsvn.jlab.org/svnroot/solid/subsystem/gem/analysis/readme https://jlabsvn.jlab.org/svnroot/solid/subsystem/mrpc/mrpc_solid_gemc and https://jlabsvn.jlab.org/svnroot/solid/subsystem/mrpc/analysis/readme https://jlabsvn.jlab.org/svnroot/solid/subsystem/spd/spd_solid_gemc and https://jlabsvn.jlab.org/svnroot/solid/subsystem/spd/analysis/readme https://jlabsvn.jlab.org/svnroot/solid/subsystem/target/target_solid_gemc https://jlabsvn.jlab.org/svnroot/solid/subsystem/magnet/magnet_solid_gemc https://jlabsvn.jlab.org/svnroot/solid/subsystem/baffle/baffle_solid_gemc https://jlabsvn.jlab.org/svnroot/solid/subsystem/target/target_solid_gemc https://jlabsvn.jlab.org/svnroot/solid/subsystem/beamline/beamline_solid_gemc https://jlabsvn.jlab.org/svnroot/solid/subsystem/absorber/absorber_solid_gemc
These directories should be kept clean so it only has files necessary for simulation, and ready to copy into the "production" area to be used with other subsystems
For all other files, please put them into other directories under the same subsystems.
Please refer to "hgc_solid_gemc" and "hgc" as an example
Once you think your subsystem devel version is ready, before making it a production version, be sure to test it with full simulation, meaning it has no conflict with any other production subsystem.
copy, paste and modify "$SoLID_GEMC/script/solid_*_full.gcard" to mix your devel version system and other production subsystems to test
After verify no conflict, you may release it as production version by copying ONLY necessary files like all perl script and txt files without any change into its production directory.
The root tree output can be analysis by some very simple scripts here https://jlabsvn.jlab.org/svnroot/solid/solid_gemc2/analysis/
header tree and generated tree
header tree and generated tree are direct passing through from input, either particle gun or lund file produced by a generator, referring to 
For generator used for SoLID, "eicRate" and "halld" both use header defined here https://hallaweb.jlab.org/wiki/index.php/Solid_eventgenerator#Output_file
detector ID for flux hit processing
We use built-in flux hit processing for virtual planes near to real detectors to record particles entering or leaving real detectors
Each virtual plane has a unique id to identify it and it appears in the "id" branch of "flux" tree
Its ID is defined by 7 digits integer like "abcdefg" a: detector GEM 1, CC 2, EC 3, MRPC 4, SPD 5, muon 6 b: sub-detector GEM 1 - 6 layer, LGCC 1, HGCC 2, FAEC 1, LAEC 2, MRPC 1, FASPD 1, LASPD 2, muon forward 1, muon endcap donut 2,muon barrel 3 c: subsub-detector GEM 1, CC 1 front, MRPC 1 front,SPD 1 front,EC 1 front 4 rear d,e,f,g: not used for now for example, 3110000 is for forward angle EC front plane see code example here https://jlabsvn.jlab.org/svnroot/solid/study/background/background.C
old way to run simulation, mainly for background study
refer to file " $SoLID_GEMC/geometry/changelog" for details
source your set_solid cd $SoLID_GEMC/geometry edit perl files to modify geometry, then run command below to generate new geometry txt files ./solid_PVDIS_simple.pl config_solid_PVDIS_simple.dat ./solid_PVDIS_LD2.pl config_solid_PVDIS_LD2.dat ./solid_SIDIS_He3_simple.pl config_solid_SIDIS_He3_simple.dat ./solid_SIDIS_He3.pl config_solid_SIDIS_He3.dat ./solid_SIDIS_NH3_simple.pl config_solid_SIDIS_NH3_simple.dat ./solid_SIDIS_NH3.pl config_solid_SIDIS_NH3.dat
source your set_solid cd $SoLID_GEMC/geometry edit the perl file "solid_material.pl" to modify geometry, then run command below to generate new material txt files ./solid_material.pl config_solid_PVDIS_simple.dat ./solid_material.pl config_solid_PVDIS_LD2.dat ./solid_material.pl config_solid_SIDIS_He3_simple.dat ./solid_material.pl config_solid_SIDIS_He3.dat ./solid_material.pl config_solid_SIDIS_NH3_simple.dat ./solid_material.pl config_solid_SIDIS_NH3.dat