Difference between revisions of "SHMS Single arm Monte Carlo"
From HallCWiki
(→Comments on code) |
|||
Line 17: | Line 17: | ||
*** For study, vacuum pipe replaces the Argon/Neon Cerenkov. Set the ''cer_flag=0'' ( line 22 in input file) and set the ''vac_flag=1'' ( line 23 in input file). | *** For study, vacuum pipe replaces the Argon/Neon Cerenkov. Set the ''cer_flag=0'' ( line 22 in input file) and set the ''vac_flag=1'' ( line 23 in input file). | ||
**SHMS wire chambers | **SHMS wire chambers | ||
− | *SHMS wire chamber resolution is 200 microns | + | *SHMS wire chamber resolution is 200 microns |
+ | *SHMS collimator is in place and cuts events. | ||
+ | *Events cut if outside area of drift chambers, S1 and S2 scintillators and the calorimeter in ''mc_shms_hut.f''. | ||
[[Category:SHMSinfo]] | [[Category:SHMSinfo]] |
Revision as of 11:37, 12 March 2012
Source code
- mc_shms_single_mar2012.tar.gz is the tarball.
- On JLab ifarm64 machines execute : "setup cernlib/2005" before doing "make"
Comments on code
- Designed to be used for studying optics and acceptance of the SHMS.
- Materials hit when multiple scattering flag turned on.
- Target
- When target length greater than 3cm, assumes a beer can target with diameter of 3.37cm and wall thickness of 0.005 inches
- Need to enter the radiation length of target material in the input file.
- Scattering chamber window is 0.016inches of aluminum
- 15 cm of air between scattering chamber and snout. Since snout is not designed this is a guess.
- SHMS entrance window is 0.020 inches of aluminum.
- SHMS exit window is 0.020 inches of aluminum.
- Three options for after the SHMS exit window
- Argon/Neon Cerenkov. Set the cer_flag=1 ( line 22 in input file). The vac_flag ( line 23 in input file) is ignored.
- Helium bag replaces the Argon/Neon Cerenkov. This is the assumed mode of option at low momentum. Set the cer_flag=0 ( line 22 in input file) and set the vac_flag=0 ( line 23 in input file).
- For study, vacuum pipe replaces the Argon/Neon Cerenkov. Set the cer_flag=0 ( line 22 in input file) and set the vac_flag=1 ( line 23 in input file).
- SHMS wire chambers
- Target
- SHMS wire chamber resolution is 200 microns
- SHMS collimator is in place and cuts events.
- Events cut if outside area of drift chambers, S1 and S2 scintillators and the calorimeter in mc_shms_hut.f.