CustomPhysicsListSS.cc

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#include "SimG4Core/CustomPhysics/interface/CustomPhysicsListSS.h"
#include "SimG4Core/CustomPhysics/interface/CustomParticleFactory.h"
#include "SimG4Core/CustomPhysics/interface/CustomParticle.h"
#include "SimG4Core/CustomPhysics/interface/DummyChargeFlipProcess.h"
#include "SimG4Core/CustomPhysics/interface/G4ProcessHelper.h"
#include "SimG4Core/CustomPhysics/interface/CustomPDGParser.h"

#include "FWCore/ParameterSet/interface/ParameterSet.h"
#include "FWCore/ParameterSet/interface/FileInPath.h"
#include "FWCore/MessageLogger/interface/MessageLogger.h"

#include "G4Decay.hh"
#include "G4hMultipleScattering.hh"
#include "G4hIonisation.hh"
#include "G4CoulombScattering.hh"
#include "G4ProcessManager.hh"

#include "SimG4Core/CustomPhysics/interface/FullModelHadronicProcess.h"
#include "SimG4Core/CustomPhysics/interface/CMSDarkPairProductionProcess.h"

using namespace CLHEP;

G4ThreadLocal std::unique_ptr<G4Decay> CustomPhysicsListSS::fDecayProcess;
G4ThreadLocal std::unique_ptr<G4ProcessHelper> CustomPhysicsListSS::myHelper;
 
CustomPhysicsListSS::CustomPhysicsListSS(const std::string& name,
                     const edm::ParameterSet & p, bool apinew)  
  :  G4VPhysicsConstructor(name) 
{  
  myConfig = p;
  if(apinew) {
    dfactor = p.getParameter<double>("DarkMPFactor");
    fHadronicInteraction = p.getParameter<bool>("RhadronPhysics");
  } else {
    // this is left for backward compatibility
    dfactor = p.getParameter<double>("dark_factor");
    fHadronicInteraction = p.getParameter<bool>("rhadronPhysics");
  }
  edm::FileInPath fp = p.getParameter<edm::FileInPath>("particlesDef");
  particleDefFilePath = fp.fullPath();
  fParticleFactory.reset(new CustomParticleFactory());
  fDecayProcess.reset(nullptr);
  myHelper.reset(nullptr);

  edm::LogVerbatim("SimG4CoreCustomPhysics")
    <<"CustomPhysicsListSS: Path for custom particle definition file: \n" 
    <<particleDefFilePath;
}

CustomPhysicsListSS::~CustomPhysicsListSS() {
}
 
void CustomPhysicsListSS::ConstructParticle(){
  edm::LogVerbatim("SimG4CoreCustomPhysicsSS") 
    << "===== CustomPhysicsList::ConstructParticle ";
  fParticleFactory.get()->loadCustomParticles(particleDefFilePath);
}
 
void CustomPhysicsListSS::ConstructProcess() {

  edm::LogVerbatim("SimG4CoreCustomPhysicsSS") 
    <<"CustomPhysicsListSS: adding CustomPhysics processes";

  fDecayProcess.reset(new G4Decay());
  G4PhysicsListHelper* ph = G4PhysicsListHelper::GetPhysicsListHelper();

  for(auto particle : fParticleFactory.get()->GetCustomParticles()) {

    CustomParticle* cp = dynamic_cast<CustomParticle*>(particle);
    if(cp) {
      G4ProcessManager* pmanager = particle->GetProcessManager();
      edm::LogVerbatim("SimG4CoreCustomPhysics") 
    <<"CustomPhysicsListSS: " << particle->GetParticleName()
    <<" PDGcode= " << particle->GetPDGEncoding()
    << " Mass= " << particle->GetPDGMass()/GeV  <<" GeV.";
      if(pmanager) {
    if(particle->GetPDGCharge() != 0.0) {
      ph->RegisterProcess(new G4hMultipleScattering, particle);
      ph->RegisterProcess(new G4hIonisation, particle);
    }
    if(fDecayProcess.get()->IsApplicable(*particle)) {
      ph->RegisterProcess(fDecayProcess.get(), particle);
    }
    if(cp->GetCloud() && fHadronicInteraction &&
       CustomPDGParser::s_isRHadron(particle->GetPDGEncoding())) {
      edm::LogVerbatim("SimG4CoreCustomPhysics") 
        <<"CustomPhysicsListSS: " << particle->GetParticleName()
        <<" CloudMass= " <<cp->GetCloud()->GetPDGMass()/GeV
        <<" GeV; SpectatorMass= " << cp->GetSpectator()->GetPDGMass()/GeV <<" GeV.";
       
      if(!myHelper.get()) { myHelper.reset(new G4ProcessHelper(myConfig, fParticleFactory.get())); }
      pmanager->AddDiscreteProcess(new FullModelHadronicProcess(myHelper.get()));
    }
        if(particle->GetParticleType()=="darkpho"){
          CMSDarkPairProductionProcess * darkGamma = new CMSDarkPairProductionProcess(dfactor);
          pmanager->AddDiscreteProcess(darkGamma);
        }
      }
    }
  }
}