Belle2PhyslistTestBrems.py

#!/usr/bin/env python3
# -*- coding: utf-8 -*-
 
 
 
"""
This script is based on BremsstralungPhotons.py and was developed to test Belle2PhysicsList.
 
Saves 100 EvtGen events + secondary bremsstrahlung photons created by Geant4 in MCParticles.
The corresponding secondaryPhysicsProcess ID is 3, which is defined as fBremsstrahlung in G4EmProcessSubType.h.
"""
 
import basf2 as b2
 
main = b2.create_path()
 
# create 100 events
main.add_module("EventInfoSetter", evtNumList=[100])
 
# using standard evtgen
main.add_module("EvtGenInput")
 
# and parameters
main.add_module("Gearbox")
 
# and the geometry
main.add_module("Geometry")
 
# Invoke Belle2 physics list instead of Geant4 reference physics list.
# New options StandardEM, UseHighPrecisionNeutrons have been added.
# Otherwise, same collection of bremsstrahlung photons with kinetic
# energy > 10.0 MeV.
main.add_module("FullSim", PhysicsList="Belle2", RunEventVerbosity=0,
                RegisterOptics=False,
                #                StandardEM=True,
                #                UseHighPrecisionNeutrons=True,
                #                ProductionCut=0.07,
                StoreBremsstrahlungPhotons=True, BremsstrahlungPhotonsEnergyCut=10.0)
 
# output
main.add_module("RootOutput", outputFileName="EvtGenSimNoBkgYesBrems.root")
 
# run it
b2.process(main)
 
# Print call statistics
print(b2.statistics)