Difference between revisions of "Using SIMC"
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(New page: == SIMC repository and documentation == * SIMC short documentation * [https://github.com/JeffersonLab/simc_gfortran SIMC on github] == Brief Overview == * SIMC main inputs are ...) |
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* SIMC main inputs are | * SIMC main inputs are | ||
| − | + | ||
| − | + | Beam energy | |
| − | + | ||
| − | + | Spectrometers angles | |
| − | + | ||
| − | + | Determination of which spectrometer detects electrons and which detects hadrons | |
| + | |||
| + | Target parameters (A,Z,density etc.) | ||
| + | |||
| + | Generator acceptance and resolution | ||
* The generator will generate events with the reaction 4 physical variables | * The generator will generate events with the reaction 4 physical variables | ||
| − | + | in-plane angle '''y'''' | |
| − | + | ||
| − | + | out-of-plane angle '''x'''' | |
| − | + | ||
| + | '''y'''(target) | ||
| + | |||
| + | momentum difference from central spectrometer momentum - '''delta''' | ||
* COSY simulation tool will generate the '''hrs_cosy''' file which include the transportation parameters for the particle along the spectrometer | * COSY simulation tool will generate the '''hrs_cosy''' file which include the transportation parameters for the particle along the spectrometer | ||
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* a root file '''hrsr_eep_h.rzdat ''' will now be generated. The tree is called '''h666''', and the most important variables are the reconstructed 4 variables (hs-electron arm, ss-hadron arm) and those generates (add an i), e.g. | * a root file '''hrsr_eep_h.rzdat ''' will now be generated. The tree is called '''h666''', and the most important variables are the reconstructed 4 variables (hs-electron arm, ss-hadron arm) and those generates (add an i), e.g. | ||
| − | + | hsdelta , hsdeltai | |
| − | + | ||
| − | + | hsytar , hsytari | |
| − | + | ||
| + | hsyptar , hsyptari | ||
| + | |||
| + | hsxptar , hsxptari | ||
Revision as of 18:39, 24 February 2015
SIMC repository and documentation
Brief Overview
- SIMC main inputs are
Beam energy
Spectrometers angles
Determination of which spectrometer detects electrons and which detects hadrons
Target parameters (A,Z,density etc.)
Generator acceptance and resolution
- The generator will generate events with the reaction 4 physical variables
in-plane angle y'
out-of-plane angle x'
y(target)
momentum difference from central spectrometer momentum - delta
- COSY simulation tool will generate the hrs_cosy file which include the transportation parameters for the particle along the spectrometer
- The output of the simulation would be the 4 physical variables reconstructed at the focal plane of each spectrometer
How to run SIMC
- compile SIMC directory: go to the SIMC directory, change what ever necessary in Makefile and type
make
- create an input file under the directory infiles following the repository examples, e.g.
infiles/hrsr_eep_h.inp
- execute SIMC with an input file, e.g.
simc (enter input file)> hrsr_eep_h
- after the run was completed 4 output files are generated
outfiles/hrsr_eep_h.geni (information) outfiles/hrsr_eep_h.hist (run settings) outfiles/hrsr_eep_h.gen (output text file) worksim/hrsr_eep_h.rzdat (paw ntuple)
- convert the paw file into root
h2root hrsr_eep_h.rzdat
- a root file hrsr_eep_h.rzdat will now be generated. The tree is called h666, and the most important variables are the reconstructed 4 variables (hs-electron arm, ss-hadron arm) and those generates (add an i), e.g.
hsdelta , hsdeltai
hsytar , hsytari
hsyptar , hsyptari
hsxptar , hsxptari
