Hello,
I am doing the migration from Geant4.9.3 to Geant4.10.4.
In Geant4.9.3.2, we construct our physics process with the following 9 package like this:
RegisterPhysics( new G4EmStandardPhysics());
RegisterPhysics( new G4EmExtraPhysics(“extra EM”));
RegisterPhysics( new ourselfOPPhysics(“standard OP”));
RegisterPhysics( new G4HadronElasticPhysics(“LElastic”,1,false));
RegisterPhysics( new HadronPhysicsQGSP_FTFP_BERT(“hadron”,true));
RegisterPhysics( new G4IonPhysics(“ion_bic”));
RegisterPhysics( new G4QStoppingPhysics(“stopping”));
RegisterPhysics( new G4DecayPhysics(“decay”,1));
In Geant 4.10.4.2, the corresponding physics process are
RegisterPhysics(new G4EmStandardPhysics());
RegisterPhysics(new G4EmExtraPhysics(verb));
RegisterPhysics(new ourselfOPPhysics(“standard OP”));
RegisterPhysics(new G4HadronElasticPhysics(verb) );
RegisterPhysics(new G4HadronPhysicsQGSP_FTFP_BERT(verb));
RegisterPhysics(new G4IonPhysics(verb));
RegisterPhysics(new G4StoppingPhysics(verb));
RegisterPhysics(new G4DecayPhysics());
However, when we compare the number of Cerenkov collected by the sensitive detector, there exist around 20% difference, Geant4.9.3.2 has more Ncerenov than Geant4.10.4.2. Does anyone has some suggestions or comments on this issue?
Thank you in advance, Min