#include <G4eplusAnnihilation.hh>

Inheritance diagram for G4eplusAnnihilation:

Public Member Functions
	G4eplusAnnihilation (const G4String &name="annihil")

	~G4eplusAnnihilation () override

G4bool	IsApplicable (const G4ParticleDefinition &p) final

G4VParticleChange *	AtRestDoIt (const G4Track &track, const G4Step &stepData) override

G4double	AtRestGetPhysicalInteractionLength (const G4Track &track, G4ForceCondition *condition) override

void	ProcessDescription (std::ostream &) const override

G4eplusAnnihilation &	operator= (const G4eplusAnnihilation &right)=delete

	G4eplusAnnihilation (const G4eplusAnnihilation &)=delete

Public Member Functions inherited from G4VEmProcess
	G4VEmProcess (const G4String &name, G4ProcessType type=fElectromagnetic)

	~G4VEmProcess () override

virtual G4bool	IsApplicable (const G4ParticleDefinition &p) override=0

void	ProcessDescription (std::ostream &outFile) const override

void	PreparePhysicsTable (const G4ParticleDefinition &) override

void	BuildPhysicsTable (const G4ParticleDefinition &) override

void	StartTracking (G4Track *) override

G4double	PostStepGetPhysicalInteractionLength (const G4Track &track, G4double previousStepSize, G4ForceCondition *condition) override

G4VParticleChange *	PostStepDoIt (const G4Track &, const G4Step &) override

G4bool	StorePhysicsTable (const G4ParticleDefinition *, const G4String &directory, G4bool ascii=false) override

G4bool	RetrievePhysicsTable (const G4ParticleDefinition *, const G4String &directory, G4bool ascii) override

virtual G4VEmProcess *	GetEmProcess (const G4String &name)

G4double	GetLambda (G4double kinEnergy, const G4MaterialCutsCouple *couple, G4double logKinEnergy)

G4double	GetCrossSection (const G4double kinEnergy, const G4MaterialCutsCouple *couple) override

G4double	ComputeCrossSectionPerAtom (G4double kineticEnergy, G4double Z, G4double A=0., G4double cut=0.0)

G4double	MeanFreePath (const G4Track &track)

void	SetLambdaBinning (G4int nbins)

void	SetMinKinEnergy (G4double e)

void	SetMinKinEnergyPrim (G4double e)

void	SetMaxKinEnergy (G4double e)

G4PhysicsTable *	LambdaTable () const

G4PhysicsTable *	LambdaTablePrim () const

void	SetLambdaTable (G4PhysicsTable *)

void	SetLambdaTablePrim (G4PhysicsTable *)

std::vector< G4double > *	EnergyOfCrossSectionMax () const

void	SetEnergyOfCrossSectionMax (std::vector< G4double > *)

G4CrossSectionType	CrossSectionType () const

void	SetCrossSectionType (G4CrossSectionType val)

const G4ParticleDefinition *	Particle () const

const G4ParticleDefinition *	SecondaryParticle () const

G4VEmModel *	SelectModelForMaterial (G4double kinEnergy, size_t idxCouple) const

void	AddEmModel (G4int, G4VEmModel , const G4Region region=nullptr)

void	SetEmModel (G4VEmModel *, G4int index=0)

G4int	NumberOfModels () const

G4VEmModel *	EmModel (size_t index=0) const

const G4VEmModel *	GetCurrentModel () const

G4VEmModel *	GetModelByIndex (G4int idx=0, G4bool ver=false) const

const G4Element *	GetCurrentElement () const

void	SetCrossSectionBiasingFactor (G4double f, G4bool flag=true)

G4double	CrossSectionBiasingFactor () const

void	ActivateForcedInteraction (G4double length=0.0, const G4String &r="", G4bool flag=true)

void	ActivateSecondaryBiasing (const G4String &region, G4double factor, G4double energyLimit)

void	SetEmMasterProcess (const G4VEmProcess *)

void	SetBuildTableFlag (G4bool val)

void	CurrentSetup (const G4MaterialCutsCouple *, G4double energy)

G4bool	UseBaseMaterial () const

void	BuildLambdaTable ()

void	StreamInfo (std::ostream &outFile, const G4ParticleDefinition &, G4bool rst=false) const

	G4VEmProcess (G4VEmProcess &)=delete

G4VEmProcess &	operator= (const G4VEmProcess &right)=delete

Public Member Functions inherited from G4VDiscreteProcess
	G4VDiscreteProcess (const G4String &aName, G4ProcessType aType=fNotDefined)

	G4VDiscreteProcess (G4VDiscreteProcess &)

virtual	~G4VDiscreteProcess ()

G4VDiscreteProcess &	operator= (const G4VDiscreteProcess &)=delete

virtual G4double	PostStepGetPhysicalInteractionLength (const G4Track &track, G4double previousStepSize, G4ForceCondition *condition)

virtual G4VParticleChange *	PostStepDoIt (const G4Track &, const G4Step &)

virtual G4double	AlongStepGetPhysicalInteractionLength (const G4Track &, G4double, G4double, G4double &, G4GPILSelection *)

virtual G4double	AtRestGetPhysicalInteractionLength (const G4Track &, G4ForceCondition *)

virtual G4VParticleChange *	AtRestDoIt (const G4Track &, const G4Step &)

virtual G4VParticleChange *	AlongStepDoIt (const G4Track &, const G4Step &)

virtual G4double	GetCrossSection (const G4double, const G4MaterialCutsCouple *)

virtual G4double	MinPrimaryEnergy (const G4ParticleDefinition , const G4Material )

Public Member Functions inherited from G4VProcess
	G4VProcess (const G4String &aName="NoName", G4ProcessType aType=fNotDefined)

	G4VProcess (const G4VProcess &right)

virtual	~G4VProcess ()

G4VProcess &	operator= (const G4VProcess &)=delete

G4bool	operator== (const G4VProcess &right) const

G4bool	operator!= (const G4VProcess &right) const

virtual G4VParticleChange *	PostStepDoIt (const G4Track &track, const G4Step &stepData)=0

virtual G4VParticleChange *	AlongStepDoIt (const G4Track &track, const G4Step &stepData)=0

virtual G4VParticleChange *	AtRestDoIt (const G4Track &track, const G4Step &stepData)=0

virtual G4double	AlongStepGetPhysicalInteractionLength (const G4Track &track, G4double previousStepSize, G4double currentMinimumStep, G4double &proposedSafety, G4GPILSelection *selection)=0

virtual G4double	AtRestGetPhysicalInteractionLength (const G4Track &track, G4ForceCondition *condition)=0

virtual G4double	PostStepGetPhysicalInteractionLength (const G4Track &track, G4double previousStepSize, G4ForceCondition *condition)=0

G4double	GetCurrentInteractionLength () const

void	SetPILfactor (G4double value)

G4double	GetPILfactor () const

G4double	AlongStepGPIL (const G4Track &track, G4double previousStepSize, G4double currentMinimumStep, G4double &proposedSafety, G4GPILSelection *selection)

G4double	AtRestGPIL (const G4Track &track, G4ForceCondition *condition)

G4double	PostStepGPIL (const G4Track &track, G4double previousStepSize, G4ForceCondition *condition)

virtual G4bool	IsApplicable (const G4ParticleDefinition &)

virtual void	BuildPhysicsTable (const G4ParticleDefinition &)

virtual void	PreparePhysicsTable (const G4ParticleDefinition &)

virtual G4bool	StorePhysicsTable (const G4ParticleDefinition *, const G4String &, G4bool)

virtual G4bool	RetrievePhysicsTable (const G4ParticleDefinition *, const G4String &, G4bool)

const G4String &	GetPhysicsTableFileName (const G4ParticleDefinition *, const G4String &directory, const G4String &tableName, G4bool ascii=false)

const G4String &	GetProcessName () const

G4ProcessType	GetProcessType () const

void	SetProcessType (G4ProcessType)

G4int	GetProcessSubType () const

void	SetProcessSubType (G4int)

virtual const G4VProcess *	GetCreatorProcess () const

virtual void	StartTracking (G4Track *)

virtual void	EndTracking ()

virtual void	SetProcessManager (const G4ProcessManager *)

virtual const G4ProcessManager *	GetProcessManager ()

virtual void	ResetNumberOfInteractionLengthLeft ()

G4double	GetNumberOfInteractionLengthLeft () const

G4double	GetTotalNumberOfInteractionLengthTraversed () const

G4bool	isAtRestDoItIsEnabled () const

G4bool	isAlongStepDoItIsEnabled () const

G4bool	isPostStepDoItIsEnabled () const

virtual void	DumpInfo () const

virtual void	ProcessDescription (std::ostream &outfile) const

void	SetVerboseLevel (G4int value)

G4int	GetVerboseLevel () const

virtual void	SetMasterProcess (G4VProcess *masterP)

const G4VProcess *	GetMasterProcess () const

virtual void	BuildWorkerPhysicsTable (const G4ParticleDefinition &part)

virtual void	PrepareWorkerPhysicsTable (const G4ParticleDefinition &)

Protected Member Functions
void	InitialiseProcess (const G4ParticleDefinition *) override

void	StreamProcessInfo (std::ostream &outFile) const override

Protected Member Functions inherited from G4VEmProcess
virtual void	StreamProcessInfo (std::ostream &) const

virtual void	InitialiseProcess (const G4ParticleDefinition *)=0

G4VEmModel *	SelectModel (G4double kinEnergy, size_t)

G4double	GetMeanFreePath (const G4Track &track, G4double previousStepSize, G4ForceCondition *condition) override

G4PhysicsVector *	LambdaPhysicsVector (const G4MaterialCutsCouple *)

void	DefineMaterial (const G4MaterialCutsCouple *couple)

G4int	LambdaBinning () const

G4double	MinKinEnergy () const

G4double	MaxKinEnergy () const

G4double	PolarAngleLimit () const

G4ParticleChangeForGamma *	GetParticleChange ()

void	SetParticle (const G4ParticleDefinition *p)

void	SetSecondaryParticle (const G4ParticleDefinition *p)

size_t	CurrentMaterialCutsCoupleIndex () const

const G4MaterialCutsCouple *	MaterialCutsCouple () const

G4bool	ApplyCuts () const

G4double	GetGammaEnergyCut ()

G4double	GetElectronEnergyCut ()

void	SetStartFromNullFlag (G4bool val)

void	SetSplineFlag (G4bool val)

const G4Element *	GetTargetElement () const

const G4Isotope *	GetTargetIsotope () const

G4int	DensityIndex (G4int idx) const

G4double	DensityFactor (G4int idx) const

virtual G4double	GetMeanFreePath (const G4Track &aTrack, G4double previousStepSize, G4ForceCondition *condition)=0

Protected Member Functions inherited from G4VProcess
void	SubtractNumberOfInteractionLengthLeft (G4double prevStepSize)

void	ClearNumberOfInteractionLengthLeft ()

Additional Inherited Members
Static Public Member Functions inherited from G4VProcess
static const G4String &	GetProcessTypeName (G4ProcessType)

Protected Attributes inherited from G4VEmProcess
const G4MaterialCutsCouple *	currentCouple = nullptr

const G4Material *	currentMaterial = nullptr

G4EmBiasingManager *	biasManager = nullptr

std::vector< G4double > *	theEnergyOfCrossSectionMax = nullptr

G4double	mfpKinEnergy = DBL_MAX

G4double	preStepKinEnergy = 0.0

G4double	preStepLogKinEnergy = LOG_EKIN_MIN

G4double	preStepLambda = 0.0

G4int	mainSecondaries = 1

G4int	secID = _EM

G4int	fluoID = _Fluorescence

G4int	augerID = _AugerElectron

G4int	biasID = _EM

G4int	tripletID = _TripletElectron

size_t	currentCoupleIndex = 0

size_t	basedCoupleIndex = 0

size_t	coupleIdxLambda = 0

size_t	idxLambda = 0

G4bool	isTheMaster = true

G4bool	baseMat = false

std::vector< G4DynamicParticle * >	secParticles

G4ParticleChangeForGamma	fParticleChange

Protected Attributes inherited from G4VProcess
const G4ProcessManager *	aProcessManager = nullptr

G4VParticleChange *	pParticleChange = nullptr

G4ParticleChange	aParticleChange

G4double	theNumberOfInteractionLengthLeft = -1.0

G4double	currentInteractionLength = -1.0

G4double	theInitialNumberOfInteractionLength = -1.0

G4String	theProcessName

G4String	thePhysicsTableFileName

G4ProcessType	theProcessType = fNotDefined

G4int	theProcessSubType = -1

G4double	thePILfactor = 1.0

G4int	verboseLevel = 0

G4bool	enableAtRestDoIt = true

G4bool	enableAlongStepDoIt = true

G4bool	enablePostStepDoIt = true

Detailed Description

Definition at line 64 of file G4eplusAnnihilation.hh.

Constructor & Destructor Documentation

◆ G4eplusAnnihilation() [1/2]

G4eplusAnnihilation::G4eplusAnnihilation ( const G4String & name = "annihil" )

explicit

Definition at line 68 of file G4eplusAnnihilation.cc.

  : G4VEmProcess(name)
{
  theGamma = G4Gamma::Gamma();
  theElectron = G4Electron::Electron();
  SetCrossSectionType(fEmDecreasing);
  SetBuildTableFlag(false);
  SetStartFromNullFlag(false);
  SetSecondaryParticle(theGamma);
  SetProcessSubType(fAnnihilation);
  enableAtRestDoIt = true;
  mainSecondaries = 2;
  fEntanglementModelID = G4PhysicsModelCatalog::GetModelID("model_GammaGammaEntanglement");
}

◆ ~G4eplusAnnihilation()

G4eplusAnnihilation::~G4eplusAnnihilation ( )

overridedefault

◆ G4eplusAnnihilation() [2/2]

G4eplusAnnihilation::G4eplusAnnihilation ( const G4eplusAnnihilation & )

delete

Member Function Documentation

◆ AtRestDoIt()

G4VParticleChange * G4eplusAnnihilation::AtRestDoIt	(	const G4Track &	track,
		const G4Step &	stepData
	)

overridevirtual

Reimplemented from G4VDiscreteProcess.

Definition at line 123 of file G4eplusAnnihilation.cc.

{
  fParticleChange.InitializeForPostStep(track);
 
  DefineMaterial(track.GetMaterialCutsCouple());
  G4int idx = (G4int)CurrentMaterialCutsCoupleIndex();
  G4double ene(0.0);
  G4VEmModel* model = SelectModel(ene, idx);
 
  // define new weight for primary and secondaries
  G4double weight = fParticleChange.GetParentWeight();
 
  // sample secondaries
  secParticles.clear();
  G4double gammaCut = GetGammaEnergyCut();
  model->SampleSecondaries(&secParticles, MaterialCutsCouple(), 
               track.GetDynamicParticle(), gammaCut);
 
  G4int num0 = (G4int)secParticles.size();
 
  // splitting or Russian roulette
  if(biasManager) {
    if(biasManager->SecondaryBiasingRegion(idx)) {
      G4double eloss = 0.0;
      weight *= biasManager->ApplySecondaryBiasing(
    secParticles, track, model, &fParticleChange, eloss, 
        idx, gammaCut, step.GetPostStepPoint()->GetSafety());
      if(eloss > 0.0) {
        eloss += fParticleChange.GetLocalEnergyDeposit();
        fParticleChange.ProposeLocalEnergyDeposit(eloss);
      }
    }
  }
 
  // save secondaries
  G4int num = (G4int)secParticles.size();
 
  // Check that entanglement is switched on... (the following flag is
  // set by /process/em/QuantumEntanglement).
  G4bool entangled = G4EmParameters::Instance()->QuantumEntanglement();
  // ...and that we have two gammas with both gammas' energies above
  // gammaCut (entanglement is only programmed for e+ e- -> gamma gamma).
  G4bool entangledgammagamma = false;
  if (entangled) {
    if (num == 2) {
      entangledgammagamma = true;
      for (const auto* p: secParticles) {
        if (p->GetDefinition() != theGamma ||
            p->GetKineticEnergy() < gammaCut) {
          entangledgammagamma = false;
        }
      }
    }
  }
 
  // Prepare a shared pointer for psossible use below. If it is used, the
  // shared pointer is copied into the tracks through G4EntanglementAuxInfo.
  // This ensures the clip board lasts until both tracks are destroyed.
  std::shared_ptr<G4eplusAnnihilationEntanglementClipBoard> clipBoard;
  if (entangledgammagamma) {
    clipBoard = std::make_shared<G4eplusAnnihilationEntanglementClipBoard>();
    clipBoard->SetParentParticleDefinition(track.GetDefinition());
  }
 
  if(num > 0) {
 
    fParticleChange.SetNumberOfSecondaries(num);
    G4double edep = fParticleChange.GetLocalEnergyDeposit();
    G4double time = track.GetGlobalTime();
     
    for (G4int i=0; i<num; ++i) {
      if (secParticles[i]) {
        G4DynamicParticle* dp = secParticles[i];
        const G4ParticleDefinition* p = dp->GetParticleDefinition();
        G4double e = dp->GetKineticEnergy();
        G4bool good = true;
        if(ApplyCuts()) {
          if (p == theGamma) {
            if (e < gammaCut) { good = false; }
          } else if (p == theElectron) {
            if (e < GetElectronEnergyCut()) { good = false; }
          }
          // added secondary if it is good
        }
        if (good) { 
          G4Track* t = new G4Track(dp, time, track.GetPosition());
          t->SetTouchableHandle(track.GetTouchableHandle());
          if (entangledgammagamma) {
        // entangledgammagamma is only true when there are only two gammas
        // (See code above where entangledgammagamma is calculated.)
            if (i == 0) { // First gamma
              clipBoard->SetTrackA(t);
            } else if (i == 1) {  // Second gamma
              clipBoard->SetTrackB(t);
            }
            t->SetAuxiliaryTrackInformation
            (fEntanglementModelID,new G4EntanglementAuxInfo(clipBoard));
          }
          if (biasManager) {
            t->SetWeight(weight * biasManager->GetWeight(i));
          } else {
            t->SetWeight(weight);
          }
          pParticleChange->AddSecondary(t);
 
          // define type of secondary
          if(i < mainSecondaries) { t->SetCreatorModelID(secID); }
          else if(i < num0) {
            if(p == theGamma) { 
              t->SetCreatorModelID(fluoID);
            } else {
              t->SetCreatorModelID(augerID);
        }
      } else {
            t->SetCreatorModelID(biasID);
          }
          /* 
          G4cout << "Secondary(post step) has weight " << t->GetWeight() 
                 << ", Ekin= " << t->GetKineticEnergy()/MeV << " MeV "
                 << GetProcessName() << " fluoID= " << fluoID
                 << " augerID= " << augerID <<G4endl;
          */
        } else {
          delete dp;
          edep += e;
        }
      } 
    }
    fParticleChange.ProposeLocalEnergyDeposit(edep);
  }
  return &fParticleChange;
}

◆ AtRestGetPhysicalInteractionLength()

G4double G4eplusAnnihilation::AtRestGetPhysicalInteractionLength	(	const G4Track &	track,
		G4ForceCondition *	condition
	)

overridevirtual

Reimplemented from G4VDiscreteProcess.

Definition at line 96 of file G4eplusAnnihilation.cc.

{
  *condition = NotForced;
  return 0.0;
}

◆ InitialiseProcess()

void G4eplusAnnihilation::InitialiseProcess ( const G4ParticleDefinition * )

overrideprotectedvirtual

Implements G4VEmProcess.

Definition at line 105 of file G4eplusAnnihilation.cc.

{
  if(!isInitialised) {
    isInitialised = true;
    if(nullptr == EmModel(0)) { SetEmModel(new G4eeToTwoGammaModel()); }
    EmModel(0)->SetLowEnergyLimit(MinKinEnergy());
    EmModel(0)->SetHighEnergyLimit(MaxKinEnergy());
    AddEmModel(1, EmModel(0));
  }
}

◆ IsApplicable()

G4bool G4eplusAnnihilation::IsApplicable ( const G4ParticleDefinition & p )

finalvirtual

Implements G4VEmProcess.

Definition at line 89 of file G4eplusAnnihilation.cc.

{
  return (&p == G4Positron::Positron());
}

◆ operator=()

G4eplusAnnihilation & G4eplusAnnihilation::operator= ( const G4eplusAnnihilation & right )

delete

◆ ProcessDescription()

void G4eplusAnnihilation::ProcessDescription ( std::ostream & out ) const

overridevirtual

Reimplemented from G4VProcess.

Definition at line 260 of file G4eplusAnnihilation.cc.

{
  out << "  Positron annihilation";
  G4VEmProcess::ProcessDescription(out);
}

◆ StreamProcessInfo()

void G4eplusAnnihilation::StreamProcessInfo ( std::ostream & outFile ) const

overrideprotectedvirtual

Reimplemented from G4VEmProcess.

Definition at line 118 of file G4eplusAnnihilation.cc.

119{}

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

Public Member Functions

Protected Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ G4eplusAnnihilation() [1/2]

◆ ~G4eplusAnnihilation()

◆ G4eplusAnnihilation() [2/2]

Member Function Documentation

◆ AtRestDoIt()

◆ AtRestGetPhysicalInteractionLength()

◆ InitialiseProcess()

◆ IsApplicable()

◆ operator=()

◆ ProcessDescription()

◆ StreamProcessInfo()