ParametrisedPhysics.cc

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#include "SimG4Core/GFlash/interface/ParametrisedPhysics.h"
#include "SimG4Core/PhysicsLists/interface/EmParticleList.h"

#include "G4Electron.hh"
#include "G4ProcessManager.hh"

#include "G4BaryonConstructor.hh"
#include "G4IonConstructor.hh"
#include "G4LeptonConstructor.hh"
#include "G4MesonConstructor.hh"
#include "G4RegionStore.hh"
#include "G4ShortLivedConstructor.hh"

using namespace CLHEP;

G4ThreadLocal ParametrisedPhysics::ThreadPrivate *ParametrisedPhysics::tpdata = nullptr;

ParametrisedPhysics::ParametrisedPhysics(std::string name, const edm::ParameterSet &p)
    : G4VPhysicsConstructor(name), theParSet(p) {}

ParametrisedPhysics::~ParametrisedPhysics() {
  if (nullptr != tpdata) {
    delete tpdata->theEMShowerModel;
    delete tpdata->theHadShowerModel;
    delete tpdata->theHadronShowerModel;
    delete tpdata->theFastSimulationManagerProcess;
    tpdata = nullptr;
  }
}

void ParametrisedPhysics::ConstructParticle() {
  G4LeptonConstructor pLeptonConstructor;
  pLeptonConstructor.ConstructParticle();

  G4MesonConstructor pMesonConstructor;
  pMesonConstructor.ConstructParticle();

  G4BaryonConstructor pBaryonConstructor;
  pBaryonConstructor.ConstructParticle();

  G4ShortLivedConstructor pShortLivedConstructor;
  pShortLivedConstructor.ConstructParticle();

  G4IonConstructor pConstructor;
  pConstructor.ConstructParticle();
}

void ParametrisedPhysics::ConstructProcess() {
  tpdata = new ThreadPrivate;
  tpdata->theEMShowerModel = nullptr;
  tpdata->theHadShowerModel = nullptr;
  tpdata->theHadronShowerModel = nullptr;
  tpdata->theFastSimulationManagerProcess = nullptr;

  bool gem = theParSet.getParameter<bool>("GflashEcal");
  bool ghad = theParSet.getParameter<bool>("GflashHcal");
  G4cout << "GFlash Construct: " << gem << "  " << ghad << G4endl;

  if (gem || ghad) {
    tpdata->theFastSimulationManagerProcess = new G4FastSimulationManagerProcess();

    G4ParticleTable *table = G4ParticleTable::GetParticleTable();
    EmParticleList emList;
    for (const auto &particleName : emList.PartNames()) {
      G4ParticleDefinition *particle = table->FindParticle(particleName);
      G4ProcessManager *pmanager = particle->GetProcessManager();
      const G4String &pname = particle->GetParticleName();
      if (pname == "e-" || pname == "e+") {
        pmanager->AddDiscreteProcess(tpdata->theFastSimulationManagerProcess);
      }
    }

    if (gem) {
      G4Region *aRegion = G4RegionStore::GetInstance()->GetRegion("EcalRegion");

      if (!aRegion) {
        G4cout << "EcalRegion is not defined !!!" << G4endl;
        G4cout << "This means that GFlash will not be turned on." << G4endl;

      } else {
        // Electromagnetic Shower Model for ECAL
        tpdata->theEMShowerModel = new GflashEMShowerModel("GflashEMShowerModel", aRegion, theParSet);
        G4cout << "GFlash is defined for EcalRegion" << G4endl;
      }
    }
    if (ghad) {
      G4Region *aRegion = G4RegionStore::GetInstance()->GetRegion("HcalRegion");
      if (!aRegion) {
        G4cout << "HcalRegion is not defined !!!" << G4endl;
        G4cout << "This means that GFlash will not be turned on." << G4endl;

      } else {
        // Electromagnetic Shower Model for HCAL
        tpdata->theHadShowerModel = new GflashEMShowerModel("GflashHadShowerModel", aRegion, theParSet);
        G4cout << "GFlash is defined for HcalRegion" << G4endl;
      }
    }
  }
}