Dear all,
I am interested in simulating the hadronic interaction of photons in a lH2 target (i.e. the photo-nuclear processes). In order to activate the hadronic interactions, In my physics list, inheriting from G4VModularPhysicsList, I instantiate a G4EmExtraPhysics object, and then I have:
void PhysicsList::ConstructProcess()
{
...
G4EmExtraPhysics_instance->ConstructProcess()
...
}
Is it possible, in this scheme, to bias the hadronic interaction of photons, by simply multiplying the cross section for a constant factor? I’ve seen that the sequence of relevant calls for this is:
G4EmExtraPhysics::ConstructProcess()
G4EmExtraPhysics::BuildGammaNuclear()
G4BertiniElectroNuclearBuilder::G4BertiniElectroNuclearBuilder()
G4BertiniElectroNuclearBuilder::Build()
G4PhotoNuclearProcess::G4PhotoNuclearProcess()
In particular, the G4BertiniElectroNuclearBuilder()
class has a member pointer to a G4PhotoNuclearProcess class
. This inherits from G4HadronicProcess()
, that has a method BiasCrossSectionByFactor
that is exactly what I am looking for. However, it seems to me it is not possible to access to this pointer starting from an instance of G4EmExtraPhysics
.
Thanks,
Andrea