G4EmLivermorePhysics.cc

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#include "G4EmLivermorePhysics.hh"
#include "G4ParticleDefinition.hh"
#include "G4SystemOfUnits.hh"
 
// *** Processes and models
 
// gamma
#include "G4PhotoElectricEffect.hh"
#include "G4LivermorePhotoElectricModel.hh"
 
#include "G4ComptonScattering.hh"
#include "G4LivermoreComptonModel.hh"
 
#include "G4GammaConversion.hh"
#include "G4LivermoreGammaConversionModel.hh"
#include "G4LivermoreGammaConversion5DModel.hh"
 
#include "G4RayleighScattering.hh" 
#include "G4LivermoreRayleighModel.hh"
 
#include "G4PEEffectFluoModel.hh"
#include "G4KleinNishinaModel.hh"
 
// e+-
#include "G4eMultipleScattering.hh"
#include "G4UniversalFluctuation.hh"
 
#include "G4eIonisation.hh"
#include "G4LivermoreIonisationModel.hh"
 
#include "G4eBremsstrahlung.hh"
#include "G4LivermoreBremsstrahlungModel.hh"
#include "G4Generator2BS.hh"
#include "G4SeltzerBergerModel.hh"
#include "G4BetheHeitler5DModel.hh"
 
// e+
#include "G4eplusAnnihilation.hh"
 
// hadrons
#include "G4hMultipleScattering.hh"
#include "G4MscStepLimitType.hh"
 
#include "G4ePairProduction.hh"
 
#include "G4hIonisation.hh"
#include "G4ionIonisation.hh"
#include "G4IonParametrisedLossModel.hh"
#include "G4NuclearStopping.hh"
 
// msc models
#include "G4UrbanMscModel.hh"
#include "G4WentzelVIModel.hh"
#include "G4GoudsmitSaundersonMscModel.hh"
#include "G4CoulombScattering.hh"
#include "G4eCoulombScatteringModel.hh"
 
// interfaces
#include "G4EmParameters.hh"
#include "G4EmBuilder.hh"
 
// particles
 
#include "G4Gamma.hh"
#include "G4Electron.hh"
#include "G4Positron.hh"
#include "G4GenericIon.hh"
 
//
#include "G4PhysicsListHelper.hh"
#include "G4BuilderType.hh"
#include "G4EmModelActivator.hh"
 
// factory
#include "G4PhysicsConstructorFactory.hh"
//
G4_DECLARE_PHYSCONSTR_FACTORY(G4EmLivermorePhysics);
 
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G4EmLivermorePhysics::G4EmLivermorePhysics(G4int ver, const G4String& pname)
  : G4VPhysicsConstructor(pname), verbose(ver)
{
  G4EmParameters* param = G4EmParameters::Instance();
  param->SetDefaults();
  param->SetVerbose(verbose);
  param->SetMinEnergy(100*CLHEP::eV);
  param->SetLowestElectronEnergy(100*CLHEP::eV);
  param->SetNumberOfBinsPerDecade(20);
  param->ActivateAngularGeneratorForIonisation(true);
  param->SetStepFunction(0.2, 10*CLHEP::um);
  param->SetStepFunctionMuHad(0.1, 50*CLHEP::um);
  param->SetStepFunctionLightIons(0.1, 20*CLHEP::um);
  param->SetStepFunctionIons(0.1, 1*CLHEP::um);
  param->SetUseMottCorrection(true);
  param->SetMscStepLimitType(fUseSafetyPlus);
  param->SetMscSkin(3);
  param->SetMscRangeFactor(0.08);
  param->SetMuHadLateralDisplacement(true);
  param->SetFluo(true);
  param->SetMaxNIELEnergy(1*CLHEP::MeV);
  SetPhysicsType(bElectromagnetic);
}
 
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G4EmLivermorePhysics::~G4EmLivermorePhysics()
{}
 
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
 
void G4EmLivermorePhysics::ConstructParticle()
{
  // minimal set of particles for EM physics
  G4EmBuilder::ConstructMinimalEmSet();
}
 
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
 
void G4EmLivermorePhysics::ConstructProcess()
{
  if(verbose > 1) {
    G4cout << "### " << GetPhysicsName() << " Construct Processes " << G4endl;
  }
  G4EmBuilder::PrepareEMPhysics();
  G4PhysicsListHelper* ph = G4PhysicsListHelper::GetPhysicsListHelper();
  
  // processes used by several particles
  G4ePairProduction* ee = new G4ePairProduction();
  G4hMultipleScattering* hmsc = new G4hMultipleScattering("ionmsc");
 
  // high energy limit for e+- scattering models
  G4double highEnergyLimit= G4EmParameters::Instance()->MscEnergyLimit();
  G4double livEnergyLimit = 1*GeV;
 
  // nuclear stopping
  G4double nielEnergyLimit = G4EmParameters::Instance()->MaxNIELEnergy();
  G4NuclearStopping* pnuc = new G4NuclearStopping();
  pnuc->SetMaxKinEnergy(nielEnergyLimit);
 
  // Add Livermore EM Processes
 
  // Add gamma EM Processes
  G4ParticleDefinition* particle = G4Gamma::Gamma();
 
  // photoelectric effect - Livermore model only
  G4PhotoElectricEffect* thePhotoElectricEffect = new G4PhotoElectricEffect();
  thePhotoElectricEffect->SetEmModel(new G4LivermorePhotoElectricModel());
 
  // Compton scattering - Livermore model only
  G4ComptonScattering* theComptonScattering = new G4ComptonScattering();
  theComptonScattering->SetEmModel(new G4KleinNishinaModel());
  G4VEmModel* comptLiv = new G4LivermoreComptonModel();
  comptLiv->SetHighEnergyLimit(livEnergyLimit);
  theComptonScattering->AddEmModel(0, comptLiv);
 
  // gamma conversion 
  G4GammaConversion* theGammaConversion = new G4GammaConversion();
  G4VEmModel* convLiv = new G4LivermoreGammaConversion5DModel();
  theGammaConversion->SetEmModel(convLiv);
 
  // default Rayleigh scattering is Livermore
  G4RayleighScattering* theRayleigh = new G4RayleighScattering();
 
  ph->RegisterProcess(thePhotoElectricEffect, particle);
  ph->RegisterProcess(theComptonScattering, particle);
  ph->RegisterProcess(theGammaConversion, particle);
  ph->RegisterProcess(theRayleigh, particle);
 
  // e-
  particle = G4Electron::Electron();
 
  // multiple and single scattering
  G4eMultipleScattering* msc = new G4eMultipleScattering;
  G4GoudsmitSaundersonMscModel* msc1 = new G4GoudsmitSaundersonMscModel();
  G4WentzelVIModel* msc2 = new G4WentzelVIModel();
  msc1->SetHighEnergyLimit(highEnergyLimit);
  msc2->SetLowEnergyLimit(highEnergyLimit);
  msc->SetEmModel(msc1);
  msc->SetEmModel(msc2);
 
  G4eCoulombScatteringModel* ssm = new G4eCoulombScatteringModel(); 
  G4CoulombScattering* ss = new G4CoulombScattering();
  ss->SetEmModel(ssm); 
  ss->SetMinKinEnergy(highEnergyLimit);
  ssm->SetLowEnergyLimit(highEnergyLimit);
  ssm->SetActivationLowEnergyLimit(highEnergyLimit);
      
  // Ionisation - Livermore should be used only for low energies
  G4eIonisation* eioni = new G4eIonisation();
  G4VEmModel* theIoniLiv = new G4LivermoreIonisationModel();
  theIoniLiv->SetHighEnergyLimit(0.1*CLHEP::MeV); 
  eioni->AddEmModel(0, theIoniLiv, new G4UniversalFluctuation() );
      
  // Bremsstrahlung
  G4eBremsstrahlung* brem = new G4eBremsstrahlung();
  G4SeltzerBergerModel* br1 = new G4SeltzerBergerModel();
  G4eBremsstrahlungRelModel* br2 = new G4eBremsstrahlungRelModel();
  br1->SetAngularDistribution(new G4Generator2BS());
  br2->SetAngularDistribution(new G4Generator2BS());
  brem->SetEmModel(br1);
  brem->SetEmModel(br2);
  br1->SetHighEnergyLimit(GeV);
     
  // register processes
  ph->RegisterProcess(msc, particle);
  ph->RegisterProcess(eioni, particle);
  ph->RegisterProcess(brem, particle);
  ph->RegisterProcess(ee, particle);
  ph->RegisterProcess(ss, particle);
 
  // e+
  particle = G4Positron::Positron();
 
  // multiple and single scattering
  msc = new G4eMultipleScattering;
  msc1 = new G4GoudsmitSaundersonMscModel();
  msc2 = new G4WentzelVIModel();
  msc1->SetHighEnergyLimit(highEnergyLimit);
  msc2->SetLowEnergyLimit(highEnergyLimit);
  msc->SetEmModel(msc1);
  msc->SetEmModel(msc2);
 
  ssm = new G4eCoulombScatteringModel(); 
  ss = new G4CoulombScattering();
  ss->SetEmModel(ssm); 
  ss->SetMinKinEnergy(highEnergyLimit);
  ssm->SetLowEnergyLimit(highEnergyLimit);
  ssm->SetActivationLowEnergyLimit(highEnergyLimit);
 
  // ionisation
  eioni = new G4eIonisation();
 
  // Bremsstrahlung from standard
  brem = new G4eBremsstrahlung();
  br1 = new G4SeltzerBergerModel();
  br2 = new G4eBremsstrahlungRelModel();
  br1->SetAngularDistribution(new G4Generator2BS());
  br2->SetAngularDistribution(new G4Generator2BS());
  brem->SetEmModel(br1);
  brem->SetEmModel(br2);
  br1->SetHighEnergyLimit(GeV);
 
  // register processes
  ph->RegisterProcess(msc, particle);
  ph->RegisterProcess(eioni, particle);
  ph->RegisterProcess(brem, particle);
  ph->RegisterProcess(ee, particle);
  ph->RegisterProcess(new G4eplusAnnihilation(), particle);
  ph->RegisterProcess(ss, particle);
 
  // generic ion
  particle = G4GenericIon::GenericIon();
  G4ionIonisation* ionIoni = new G4ionIonisation();
  ionIoni->SetEmModel(new G4IonParametrisedLossModel());
  ph->RegisterProcess(hmsc, particle);
  ph->RegisterProcess(ionIoni, particle);
  ph->RegisterProcess(pnuc, particle);
 
  // muons, hadrons, ions
  G4EmBuilder::ConstructCharged(hmsc, pnuc);
 
  // extra configuration
  G4EmModelActivator mact(GetPhysicsName());
 
}
 
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......