SIMC repository and documentation
- SIMC main inputs are
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'
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
- create an input file under the directory infiles following the repository examples, e.g.
- 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
- 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