Using SIMC
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Revision as of 18:38, 24 February 2015 by Cohen (Talk | contribs) (New page: == SIMC repository and documentation == * SIMC short documentation * [https://github.com/JeffersonLab/simc_gfortran SIMC on github] == Brief Overview == * SIMC main inputs are ...)
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