Difference between revisions of "SHMS Single arm Monte Carlo"
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== Source code == | == Source code == | ||
*[http://www.jlab.org/Hall-C/upgrade/mc_shms_single_mar2012.tar.gz mc_shms_single_mar2012.tar.gz] is the tarball. | *[http://www.jlab.org/Hall-C/upgrade/mc_shms_single_mar2012.tar.gz mc_shms_single_mar2012.tar.gz] is the tarball. | ||
| − | * On JLab ifarm64 machines | + | * 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). | ||
[[Category:SHMSinfo]] | [[Category:SHMSinfo]] | ||
Revision as of 10:51, 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).
- Target
