#include <G4ElectroVDNuclearModel.hh>

Inheritance diagram for G4ElectroVDNuclearModel:

Public Member Functions
	G4ElectroVDNuclearModel ()

	~G4ElectroVDNuclearModel ()

G4HadFinalState *	ApplyYourself (const G4HadProjectile &aTrack, G4Nucleus &aTargetNucleus)

virtual void	ModelDescription (std::ostream &outFile) const

Public Member Functions inherited from G4HadronicInteraction
	G4HadronicInteraction (const G4String &modelName="HadronicModel")

virtual	~G4HadronicInteraction ()

virtual G4double	SampleInvariantT (const G4ParticleDefinition *p, G4double plab, G4int Z, G4int A)

virtual G4bool	IsApplicable (const G4HadProjectile &aTrack, G4Nucleus &targetNucleus)

G4double	GetMinEnergy () const

G4double	GetMinEnergy (const G4Material aMaterial, const G4Element anElement) const

void	SetMinEnergy (G4double anEnergy)

void	SetMinEnergy (G4double anEnergy, const G4Element *anElement)

void	SetMinEnergy (G4double anEnergy, const G4Material *aMaterial)

G4double	GetMaxEnergy () const

G4double	GetMaxEnergy (const G4Material aMaterial, const G4Element anElement) const

void	SetMaxEnergy (const G4double anEnergy)

void	SetMaxEnergy (G4double anEnergy, const G4Element *anElement)

void	SetMaxEnergy (G4double anEnergy, const G4Material *aMaterial)

G4int	GetVerboseLevel () const

void	SetVerboseLevel (G4int value)

const G4String &	GetModelName () const

void	DeActivateFor (const G4Material *aMaterial)

void	ActivateFor (const G4Material *aMaterial)

void	DeActivateFor (const G4Element *anElement)

void	ActivateFor (const G4Element *anElement)

G4bool	IsBlocked (const G4Material *aMaterial) const

G4bool	IsBlocked (const G4Element *anElement) const

void	SetRecoilEnergyThreshold (G4double val)

G4double	GetRecoilEnergyThreshold () const

virtual const std::pair< G4double, G4double >	GetFatalEnergyCheckLevels () const

virtual std::pair< G4double, G4double >	GetEnergyMomentumCheckLevels () const

void	SetEnergyMomentumCheckLevels (G4double relativeLevel, G4double absoluteLevel)

virtual void	BuildPhysicsTable (const G4ParticleDefinition &)

virtual void	InitialiseModel ()

	G4HadronicInteraction (const G4HadronicInteraction &right)=delete

const G4HadronicInteraction &	operator= (const G4HadronicInteraction &right)=delete

G4bool	operator== (const G4HadronicInteraction &right) const =delete

G4bool	operator!= (const G4HadronicInteraction &right) const =delete

Additional Inherited Members
Protected Member Functions inherited from G4HadronicInteraction
void	SetModelName (const G4String &nam)

G4bool	IsBlocked () const

void	Block ()

Protected Attributes inherited from G4HadronicInteraction
G4HadFinalState	theParticleChange

G4int	verboseLevel

G4double	theMinEnergy

G4double	theMaxEnergy

G4bool	isBlocked

Detailed Description

Definition at line 49 of file G4ElectroVDNuclearModel.hh.

Constructor & Destructor Documentation

◆ G4ElectroVDNuclearModel()

G4ElectroVDNuclearModel::G4ElectroVDNuclearModel ( )

Definition at line 68 of file G4ElectroVDNuclearModel.cc.

 : G4HadronicInteraction("G4ElectroVDNuclearModel"),
   leptonKE(0.0), photonEnergy(0.0), photonQ2(0.0), secID(-1)
{
  SetMinEnergy(0.0);
  SetMaxEnergy(1*PeV);
 
  electroXS = 
    (G4ElectroNuclearCrossSection*)G4CrossSectionDataSetRegistry::Instance()->
    GetCrossSectionDataSet(G4ElectroNuclearCrossSection::Default_Name());
  if ( electroXS == nullptr ) {
    electroXS = new G4ElectroNuclearCrossSection;
  }
 
  gammaXS = 
    (G4PhotoNuclearCrossSection*)G4CrossSectionDataSetRegistry::Instance()->
    GetCrossSectionDataSet(G4PhotoNuclearCrossSection::Default_Name());
  if ( gammaXS == nullptr ) {
    gammaXS = 
      (G4GammaNuclearXS*)G4CrossSectionDataSetRegistry::Instance()->
      GetCrossSectionDataSet(G4GammaNuclearXS::Default_Name());
    if ( gammaXS == nullptr ) {
      gammaXS = new G4PhotoNuclearCrossSection;
    }
  } 
 
  // reuse existing pre-compound model
  G4GeneratorPrecompoundInterface* precoInterface 
    = new G4GeneratorPrecompoundInterface();
  G4HadronicInteraction* p =
    G4HadronicInteractionRegistry::Instance()->FindModel("PRECO");
  G4VPreCompoundModel* pre = static_cast<G4VPreCompoundModel*>(p);
  if(!pre) { pre = new G4PreCompoundModel(); }
  precoInterface->SetDeExcitation(pre);
 
  // string model
  ftfp = new G4TheoFSGenerator();
  ftfp->SetTransport(precoInterface);
  theFragmentation = new G4LundStringFragmentation();
  theStringDecay = new G4ExcitedStringDecay(theFragmentation);
  G4FTFModel* theStringModel = new G4FTFModel();
  theStringModel->SetFragmentationModel(theStringDecay);
  ftfp->SetHighEnergyGenerator(theStringModel);
    
  // Build Bertini model
  bert = new G4CascadeInterface();
 
  // Creator model ID
  secID = G4PhysicsModelCatalog::GetModelID( "model_" + GetModelName() );
}

◆ ~G4ElectroVDNuclearModel()

G4ElectroVDNuclearModel::~G4ElectroVDNuclearModel ( )

Definition at line 119 of file G4ElectroVDNuclearModel.cc.

{
  delete theFragmentation;
  delete theStringDecay;
}

Member Function Documentation

◆ ApplyYourself()

G4HadFinalState * G4ElectroVDNuclearModel::ApplyYourself	(	const G4HadProjectile &	aTrack,
		G4Nucleus &	aTargetNucleus )

virtual

Reimplemented from G4HadronicInteraction.

Definition at line 141 of file G4ElectroVDNuclearModel.cc.

{
    // Set up default particle change (just returns initial state)
    theParticleChange.Clear();
    theParticleChange.SetStatusChange(isAlive);
    leptonKE = aTrack.GetKineticEnergy();
    theParticleChange.SetEnergyChange(leptonKE);
    theParticleChange.SetMomentumChange(aTrack.Get4Momentum().vect().unit() );
    
    // Set up sanity checks for real photon production
    G4DynamicParticle lepton(aTrack.GetDefinition(), aTrack.Get4Momentum() );
    
    // Need to call GetElementCrossSection before calling GetEquivalentPhotonEnergy.
    const G4Material* mat = aTrack.GetMaterial();
    G4int targZ = targetNucleus.GetZ_asInt();
    electroXS->GetElementCrossSection(&lepton, targZ, mat);
    
    photonEnergy = electroXS->GetEquivalentPhotonEnergy();
    // Photon energy cannot exceed lepton energy
    if (photonEnergy < leptonKE) {
        photonQ2 = electroXS->GetEquivalentPhotonQ2(photonEnergy);
        G4double dM = G4Proton::Proton()->GetPDGMass() + G4Neutron::Neutron()->GetPDGMass();
        // Photon
        if (photonEnergy > photonQ2/dM) {
            // Produce recoil lepton and transferred photon
            G4DynamicParticle* transferredPhoton = CalculateEMVertex(aTrack, targetNucleus);
            // Interact gamma with nucleus
            if (transferredPhoton) CalculateHadronicVertex(transferredPhoton, targetNucleus);
        }
    }
    return &theParticleChange;
}

◆ ModelDescription()

void G4ElectroVDNuclearModel::ModelDescription ( std::ostream & outFile ) const

virtual

Reimplemented from G4HadronicInteraction.

Definition at line 125 of file G4ElectroVDNuclearModel.cc.

{
  outFile << "G4ElectroVDNuclearModel handles the inelastic scattering\n"
          << "of e- and e+ from nuclei using the equivalent photon\n"
          << "approximation in which the incoming lepton generates a\n"
          << "virtual photon at the electromagnetic vertex, and the\n"
          << "virtual photon is converted to a real photon.  At low\n"
          << "energies, the photon interacts directly with the nucleus\n"
          << "using the Bertini cascade.  At high energies the photon\n"
          << "is converted to a pi0 which interacts using the FTFP\n"
          << "model.  The electro- and gamma-nuclear cross sections of\n"
          << "M. Kossov are used to generate the virtual photon spectrum\n";
}

The documentation for this class was generated from the following files:

Public Member Functions