ParametrisedEMPhysics.cc

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//
// Joanna Weng 08.2005
// Physics process for Gflash parameterisation
// modified by Soon Yung Jun, Dongwook Jang
// V.Ivanchenko rename the class, cleanup, and move
//              to SimG4Core/Application - 2012/08/14

#include "SimG4Core/Application/interface/ParametrisedEMPhysics.h"
#include "SimG4Core/Application/interface/GFlashEMShowerModel.h"
#include "SimG4Core/Application/interface/GFlashHadronShowerModel.h"
#include "SimG4Core/Application/interface/ElectronLimiter.h"
#include "FWCore/MessageLogger/interface/MessageLogger.h"

#include "G4FastSimulationManagerProcess.hh"
#include "G4ProcessManager.hh"

#include "G4LeptonConstructor.hh"
#include "G4MesonConstructor.hh"
#include "G4BaryonConstructor.hh"
#include "G4ShortLivedConstructor.hh"
#include "G4IonConstructor.hh"
#include "G4RegionStore.hh"
#include "G4Electron.hh"
#include "G4Positron.hh"
#include "G4PionMinus.hh"
#include "G4PionPlus.hh"
#include "G4KaonMinus.hh"
#include "G4KaonPlus.hh"
#include "G4Proton.hh"
#include "G4AntiProton.hh"

#include "G4EmProcessOptions.hh"
#include "G4PhysicsListHelper.hh"
#include "G4SystemOfUnits.hh"
#include "G4UAtomicDeexcitation.hh"
#include "G4LossTableManager.hh"

ParametrisedEMPhysics::ParametrisedEMPhysics(std::string name, const edm::ParameterSet & p) 
  : G4VPhysicsConstructor(name), theParSet(p) 
{
  theEcalEMShowerModel = 0;
  theEcalHadShowerModel = 0;
  theHcalEMShowerModel = 0;
  theHcalHadShowerModel = 0;
}

ParametrisedEMPhysics::~ParametrisedEMPhysics() {
  delete theEcalEMShowerModel;
  delete theEcalHadShowerModel;
  delete theHcalEMShowerModel;
  delete theHcalHadShowerModel;
}

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

  G4MesonConstructor pMesonConstructor;
  pMesonConstructor.ConstructParticle();

  G4BaryonConstructor pBaryonConstructor;
  pBaryonConstructor.ConstructParticle();

  G4ShortLivedConstructor pShortLivedConstructor;
  pShortLivedConstructor.ConstructParticle();  
    
  G4IonConstructor pConstructor;
  pConstructor.ConstructParticle();  
}

void ParametrisedEMPhysics::ConstructProcess() {

  // GFlash part 
  bool gem  = theParSet.getParameter<bool>("GflashEcal");
  bool ghad = theParSet.getParameter<bool>("GflashHcal");
  bool gemHad  = theParSet.getParameter<bool>("GflashEcalHad");
  bool ghadHad = theParSet.getParameter<bool>("GflashHcalHad");

  G4PhysicsListHelper* ph = G4PhysicsListHelper::GetPhysicsListHelper();
  if(gem || ghad || gemHad || ghadHad) {
    edm::LogInfo("SimG4CoreApplication") 
      << "ParametrisedEMPhysics: GFlash Construct for e+-: " 
      << gem << "  " << ghad << " for hadrons: " << gemHad << "  " << ghadHad;

    G4FastSimulationManagerProcess * theFastSimulationManagerProcess = 
      new G4FastSimulationManagerProcess();

    if(gem || ghad) {
      ph->RegisterProcess(theFastSimulationManagerProcess, G4Electron::Electron());
      ph->RegisterProcess(theFastSimulationManagerProcess, G4Positron::Positron());
    }
    if(gemHad || ghadHad) {
      ph->RegisterProcess(theFastSimulationManagerProcess, G4Proton::Proton());
      ph->RegisterProcess(theFastSimulationManagerProcess, G4AntiProton::AntiProton());
      ph->RegisterProcess(theFastSimulationManagerProcess, G4PionPlus::PionPlus());
      ph->RegisterProcess(theFastSimulationManagerProcess, G4PionMinus::PionMinus());
      ph->RegisterProcess(theFastSimulationManagerProcess, G4KaonPlus::KaonPlus());
      ph->RegisterProcess(theFastSimulationManagerProcess, G4KaonMinus::KaonMinus());
    }

    if(gem || gemHad) {
      G4Region* aRegion = 
    G4RegionStore::GetInstance()->GetRegion("EcalRegion");
      
      if(!aRegion){
    edm::LogInfo("SimG4CoreApplication") 
      << "ParametrisedEMPhysics::ConstructProcess: " 
      << "EcalRegion is not defined, GFlash will not be enabled for ECAL!";
    
      } else {
    if(gem) {

      //Electromagnetic Shower Model for ECAL
      theEcalEMShowerModel = 
        new GFlashEMShowerModel("GflashEcalEMShowerModel",aRegion,theParSet);
      //std::cout << "GFlash is defined for EcalRegion" << std::endl;
    }
    if(gemHad) {

      //Electromagnetic Shower Model for ECAL
      theEcalHadShowerModel = 
        new GFlashHadronShowerModel("GflashEcalHadShowerModel",aRegion,theParSet);
      //std::cout << "GFlash is defined for EcalRegion" << std::endl;
    }    
      }
    }
    if(ghad || ghadHad) {
      G4Region* aRegion = 
    G4RegionStore::GetInstance()->GetRegion("HcalRegion");
      if(!aRegion) {
    edm::LogInfo("SimG4CoreApplication") 
      << "ParametrisedEMPhysics::ConstructProcess: " 
      << "HcalRegion is not defined, GFlash will not be enabled for HCAL!";
    
      } else {
    if(ghad) {

      //Electromagnetic Shower Model for HCAL
      theHcalEMShowerModel = 
        new GFlashEMShowerModel("GflashHcalEMShowerModel",aRegion,theParSet);
      //std::cout << "GFlash is defined for HcalRegion" << std::endl;
    }
    if(ghadHad) {

      //Electromagnetic Shower Model for ECAL
      theHcalHadShowerModel = 
        new GFlashHadronShowerModel("GflashHcalHadShowerModel",aRegion,theParSet);
      //std::cout << "GFlash is defined for EcalRegion" << std::endl;
    }    
      }
    }
  }
  // bremsstrahlung threshold and EM verbosity
  G4EmProcessOptions opt;
  G4int verb = theParSet.getUntrackedParameter<int>("Verbosity",0);
  opt.SetVerbose(verb - 1);

  G4double bremth = theParSet.getParameter<double>("G4BremsstrahlungThreshold")*GeV; 
  edm::LogInfo("SimG4CoreApplication") 
    << "ParametrisedEMPhysics::ConstructProcess: bremsstrahlung threshold Eth= "
    << bremth/GeV << " GeV"; 
  opt.SetBremsstrahlungTh(bremth);

  // Russian roulette and tracking cut for e+-
  const G4int NREG = 6; 
  const G4String rname[NREG] = {"EcalRegion", "HcalRegion", "MuonIron",
                "PreshowerRegion","CastorRegion",
                "DefaultRegionForTheWorld"};
  G4double rrfact[NREG] = { 1.0 };

  double energyLim = 
    theParSet.getParameter<double>("RusRoElectronEnergyLimit")*MeV;
  if(energyLim > 0.0) {
    rrfact[0] = theParSet.getParameter<double>("RusRoEcalElectron");
    rrfact[1] = theParSet.getParameter<double>("RusRoHcalElectron");
    rrfact[2] = theParSet.getParameter<double>("RusRoMuonIronElectron");
    rrfact[3] = theParSet.getParameter<double>("RusRoPreShowerElectron");
    rrfact[4] = theParSet.getParameter<double>("RusRoCastorElectron");
    rrfact[5] = theParSet.getParameter<double>("RusRoWorldElectron");
    for(int i=0; i<NREG; ++i) {
      if(rrfact[i] < 1.0) {
    opt.ActivateSecondaryBiasing("eIoni",rname[i],rrfact[i],energyLim);
    opt.ActivateSecondaryBiasing("hIoni",rname[i],rrfact[i],energyLim);
    edm::LogInfo("SimG4CoreApplication") 
      << "ParametrisedEMPhysics: Russian Roulette"
      << " for e- Prob= " << rrfact[i]  
      << " Elimit(MeV)= " << energyLim/CLHEP::MeV
      << " inside " << rname[i];
      }
    }
  }

  // Step limiters for e+-
  bool eLimiter = theParSet.getParameter<bool>("ElectronStepLimit");
  bool rLimiter = theParSet.getParameter<bool>("ElectronRangeTest");
  bool pLimiter = theParSet.getParameter<bool>("PositronStepLimit");

  if(eLimiter || rLimiter) {
    theElectronLimiter = new ElectronLimiter(theParSet);
    theElectronLimiter->SetRangeCheckFlag(rLimiter);
    theElectronLimiter->SetFieldCheckFlag(eLimiter);
    ph->RegisterProcess(theElectronLimiter, G4Electron::Electron());
  }
  
  if(pLimiter){
    thePositronLimiter = new ElectronLimiter(theParSet);
    thePositronLimiter->SetFieldCheckFlag(pLimiter);
    ph->RegisterProcess(theElectronLimiter, G4Positron::Positron());
  }
  // enable fluorescence
  bool fluo = theParSet.getParameter<bool>("FlagFluo");
  if(fluo) {
    G4VAtomDeexcitation* de = new G4UAtomicDeexcitation();
    G4LossTableManager::Instance()->SetAtomDeexcitation(de);
    de->SetFluo(true);
  }
}