SctParSim (python)

SctParSim (Python)

This version of the parametric simulation had written in the Python language. The main difference is that this version has the ability to draw events

How to run

Login to stark or proxima machine.

ssh stark -X
setupSCTAU; asetup Aurora,0.2.3
mkdir workarea
cd workarea
mkdir run
cd run
cp /home/razuvaev/public/misc/pi_ms_f1_mppc2_px3_d200_mla4_graph2d.root .
cp /home/razuvaev/public/misc/gun1.cfg .
cp /home/razuvaev/public/misc/g4beamline_pi_plus_100k_parse.root .
cp /home/razuvaev/public/misc/g4beamline_mu_plus_100k_parse.root .
cp /home/whitem/public/misc/pi_p.root .
cp /home/whitem/public/misc/pi_m.root .
cp /home/whitem/public/misc/mu_p.root .
cp /home/whitem/public/misc/mu_m.root .
runparsim.py

Options

Option	Run example	Description
-b, --batch	runparsim.py -b	Turn on the batch mode. Suppress EventDisplay execution.
-c, --change	runparsim.py -c my_cfg_file.dat	Change some parameters of the detector.
-n, --neve	runparsim.py -n 31415	The number of events to process.
-g, --gun	runparsim.py -g	Turn on the particle gun mode.
-ig, --input-gun	runparsim.py -g -ig my_gun.dat	Input particle gun configuration file.
-i, --input	runparsim.py -i gen_dkpipi0.root	Specify the input file.
-o, --output	runparsim.py -o parsim_dkpipi0.root	Specify the output file.
--profile	runparsim.py --profile	Turn on the cProfile to analyse the performance.

Event display

The event display has two projections: x-y and y-z. All detector subsystems are presented. Some of them overlay, especially PIDs, it is not important for parametric simulation, but let's study several options at once. All particles from AllGenParticles branch are presented at the plot by lines of different styles, colours and thicknesses. Somehow the line thickness corresponds to the particle mass, the wide line --- the more massive particle. Warm colours are devoted to positive charged particles and cold to negative ones. Also, particle lines are labeled.

The event display is switched on by default. To switch it off run simulation with -b option.

Detector configuration

The detector parameters can be changed via a configuration file my_cfg_file.dat placed in the main simulation folder. The file has a simple structure --- one parameter and its value(s) per line. A parameter's name and value should be separated by spaces. Arrays should be written in [] brackets. The values in arrays should be separated by commas. Empty lines and lines contained incorrectly parameter names are ignored.

In the example below the parameter at the first line and the second line is one number, while the parameter at the third line is an array.

trck.minPt 0.05
trck.corrMtx.pij -0.08
calo.resPar [0.167,0.0,0.011]

The parameters can be given in any order.

All detector parameters can be viewed in the configuration files:

Subsystem	Congiguration file	Name to change parameters
ASHIPH	ashiphpars_std01.json	ashiph1030
Calorimeter	calopars_std01.json	calo
FARICH	farichpars_std01.json	farich
FDIRC	fdircpars_std01.json	fdirc
Muon system	muonpars_std01.json	muon
ToF	tofpars_std01.json	tof
ToP	toppars_std01.json	top
Tracker	trkpars_std01.json	tracker

The detector subsystems sizes are stored in detlayout_std01.json. They can be changed in the same way.

Pictures

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  FDIRC angle vs true momentum.