#include <G4eBremParametrizedModel.hh>

Inheritance diagram for G4eBremParametrizedModel:

Collaboration diagram for G4eBremParametrizedModel:

Public Member Functions
	G4eBremParametrizedModel (const G4ParticleDefinition *p=nullptr, const G4String &nam="eBremParam")

virtual	~G4eBremParametrizedModel ()

virtual void	Initialise (const G4ParticleDefinition *, const G4DataVector &) override

virtual void	InitialiseLocal (const G4ParticleDefinition , G4VEmModel masterModel) override

virtual G4double	MinEnergyCut (const G4ParticleDefinition , const G4MaterialCutsCouple ) override

virtual G4double	ComputeDEDXPerVolume (const G4Material , const G4ParticleDefinition , G4double kineticEnergy, G4double cutEnergy) override

virtual G4double	ComputeCrossSectionPerAtom (const G4ParticleDefinition *, G4double tkin, G4double Z, G4double, G4double cutEnergy, G4double maxEnergy=DBL_MAX) override

virtual void	SampleSecondaries (std::vector< G4DynamicParticle * > , const G4MaterialCutsCouple , const G4DynamicParticle *, G4double cutEnergy, G4double maxEnergy) override

virtual void	SetupForMaterial (const G4ParticleDefinition , const G4Material , G4double) override

Public Member Functions inherited from G4VEmModel
	G4VEmModel (const G4String &nam)

virtual	~G4VEmModel ()

virtual void	InitialiseForMaterial (const G4ParticleDefinition , const G4Material )

virtual void	InitialiseForElement (const G4ParticleDefinition *, G4int Z)

virtual G4double	CrossSectionPerVolume (const G4Material , const G4ParticleDefinition , G4double kineticEnergy, G4double cutEnergy=0.0, G4double maxEnergy=DBL_MAX)

virtual G4double	GetPartialCrossSection (const G4Material , G4int level, const G4ParticleDefinition , G4double kineticEnergy)

virtual G4double	ComputeCrossSectionPerShell (const G4ParticleDefinition *, G4int Z, G4int shellIdx, G4double kinEnergy, G4double cutEnergy=0.0, G4double maxEnergy=DBL_MAX)

virtual G4double	ChargeSquareRatio (const G4Track &)

virtual G4double	GetChargeSquareRatio (const G4ParticleDefinition , const G4Material , G4double kineticEnergy)

virtual G4double	GetParticleCharge (const G4ParticleDefinition , const G4Material , G4double kineticEnergy)

virtual void	StartTracking (G4Track *)

virtual void	CorrectionsAlongStep (const G4MaterialCutsCouple , const G4DynamicParticle , G4double &eloss, G4double &niel, G4double length)

virtual G4double	Value (const G4MaterialCutsCouple , const G4ParticleDefinition , G4double kineticEnergy)

virtual G4double	MinPrimaryEnergy (const G4Material , const G4ParticleDefinition , G4double cut=0.0)

virtual void	DefineForRegion (const G4Region *)

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

void	InitialiseElementSelectors (const G4ParticleDefinition *, const G4DataVector &)

std::vector < G4EmElementSelector * > *	GetElementSelectors ()

void	SetElementSelectors (std::vector< G4EmElementSelector * > *)

virtual G4double	ComputeDEDX (const G4MaterialCutsCouple , const G4ParticleDefinition , G4double kineticEnergy, G4double cutEnergy=DBL_MAX)

G4double	CrossSection (const G4MaterialCutsCouple , const G4ParticleDefinition , G4double kineticEnergy, G4double cutEnergy=0.0, G4double maxEnergy=DBL_MAX)

G4double	ComputeMeanFreePath (const G4ParticleDefinition , G4double kineticEnergy, const G4Material , G4double cutEnergy=0.0, G4double maxEnergy=DBL_MAX)

G4double	ComputeCrossSectionPerAtom (const G4ParticleDefinition , const G4Element , G4double kinEnergy, G4double cutEnergy=0.0, G4double maxEnergy=DBL_MAX)

G4int	SelectIsotopeNumber (const G4Element *)

const G4Element *	SelectRandomAtom (const G4MaterialCutsCouple , const G4ParticleDefinition , G4double kineticEnergy, G4double cutEnergy=0.0, G4double maxEnergy=DBL_MAX)

const G4Element *	SelectRandomAtom (const G4Material , const G4ParticleDefinition , G4double kineticEnergy, G4double cutEnergy=0.0, G4double maxEnergy=DBL_MAX)

G4int	SelectRandomAtomNumber (const G4Material *)

void	SetParticleChange (G4VParticleChange , G4VEmFluctuationModel f=nullptr)

void	SetCrossSectionTable (G4PhysicsTable *, G4bool isLocal)

G4ElementData *	GetElementData ()

G4PhysicsTable *	GetCrossSectionTable ()

G4VEmFluctuationModel *	GetModelOfFluctuations ()

G4VEmAngularDistribution *	GetAngularDistribution ()

void	SetAngularDistribution (G4VEmAngularDistribution *)

G4double	HighEnergyLimit () const

G4double	LowEnergyLimit () const

G4double	HighEnergyActivationLimit () const

G4double	LowEnergyActivationLimit () const

G4double	PolarAngleLimit () const

G4double	SecondaryThreshold () const

G4bool	LPMFlag () const

G4bool	DeexcitationFlag () const

G4bool	ForceBuildTableFlag () const

G4bool	UseAngularGeneratorFlag () const

void	SetAngularGeneratorFlag (G4bool)

void	SetHighEnergyLimit (G4double)

void	SetLowEnergyLimit (G4double)

void	SetActivationHighEnergyLimit (G4double)

void	SetActivationLowEnergyLimit (G4double)

G4bool	IsActive (G4double kinEnergy)

void	SetPolarAngleLimit (G4double)

void	SetSecondaryThreshold (G4double)

void	SetLPMFlag (G4bool val)

void	SetDeexcitationFlag (G4bool val)

void	SetForceBuildTable (G4bool val)

void	SetFluctuationFlag (G4bool val)

void	SetMasterThread (G4bool val)

G4bool	IsMaster () const

G4double	MaxSecondaryKinEnergy (const G4DynamicParticle *dynParticle)

const G4String &	GetName () const

void	SetCurrentCouple (const G4MaterialCutsCouple *)

const G4Element *	GetCurrentElement () const

const G4Isotope *	GetCurrentIsotope () const

G4bool	IsLocked () const

void	SetLocked (G4bool)

Protected Attributes
G4NistManager *	nist

const G4ParticleDefinition *	particle

G4ParticleDefinition *	theGamma

G4ParticleChangeForLoss *	fParticleChange

G4double	minThreshold

G4double	particleMass

G4double	kinEnergy

G4double	totalEnergy

G4double	currentZ

G4double	z13

G4double	z23

G4double	lnZ

G4double	densityFactor

G4double	densityCorr

G4double	Fel

G4double	Finel

G4double	facFel

G4double	facFinel

G4double	fMax

G4double	fCoulomb

G4bool	isElectron

Protected Attributes inherited from G4VEmModel
G4ElementData *	fElementData

G4VParticleChange *	pParticleChange

G4PhysicsTable *	xSectionTable

const std::vector< G4double > *	theDensityFactor

const std::vector< G4int > *	theDensityIdx

size_t	idxTable

G4bool	lossFlucFlag

Static Protected Attributes
static const G4double	xgi [8]

static const G4double	wgi [8]

Static Protected Attributes inherited from G4VEmModel
static const G4double	inveplus = 1.0/CLHEP::eplus

Additional Inherited Members
Protected Member Functions inherited from G4VEmModel
G4ParticleChangeForLoss *	GetParticleChangeForLoss ()

G4ParticleChangeForGamma *	GetParticleChangeForGamma ()

virtual G4double	MaxSecondaryEnergy (const G4ParticleDefinition *, G4double kineticEnergy)

const G4MaterialCutsCouple *	CurrentCouple () const

void	SetCurrentElement (const G4Element *)

Detailed Description

Definition at line 61 of file G4eBremParametrizedModel.hh.

Constructor & Destructor Documentation

G4eBremParametrizedModel::G4eBremParametrizedModel	(	const G4ParticleDefinition *	p = `nullptr`,
		const G4String &	nam = `"eBremParam"`
	)

explicit

Definition at line 100 of file G4eBremParametrizedModel.cc.

   : G4VEmModel(nam),
     particle(0),
     isElectron(true),
     fMigdalConstant(classic_electr_radius*electron_Compton_length*electron_Compton_length*4.0*pi),
     bremFactor(fine_structure_const*classic_electr_radius*classic_electr_radius*16./3.),
     isInitialised(false)
 {
   theGamma = G4Gamma::Gamma();
 
   minThreshold = 0.1*keV;
   lowKinEnergy = 10.*MeV;
   SetLowEnergyLimit(lowKinEnergy);  
 
   nist = G4NistManager::Instance();  
 
   SetAngularDistribution(new G4ModifiedTsai());
 
   particleMass = kinEnergy = totalEnergy = currentZ = z13 = z23 = lnZ = Fel = Finel 
     = densityFactor = densityCorr = fMax = fCoulomb = 0.;
 
   InitialiseConstants();
   if(p) { SetParticle(p); }
 }

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G4eBremParametrizedModel::~G4eBremParametrizedModel ( )

virtual

Definition at line 136 of file G4eBremParametrizedModel.cc.

137 {

138 }

Member Function Documentation

G4double G4eBremParametrizedModel::ComputeCrossSectionPerAtom	(	const G4ParticleDefinition *	p,
		G4double	tkin,
		G4double	Z,
		G4double	,
		G4double	cutEnergy,
		G4double	maxEnergy = `DBL_MAX`
	)

overridevirtual

Reimplemented from G4VEmModel.

Definition at line 267 of file G4eBremParametrizedModel.cc.

 {
   if(!particle) { SetParticle(p); }
   if(kineticEnergy < lowKinEnergy) { return 0.0; }
   G4double cut  = std::min(cutEnergy, kineticEnergy);
   G4double tmax = std::min(maxEnergy, kineticEnergy);
 
   if(cut >= tmax) { return 0.0; }
 
   SetCurrentElement(Z);
 
   G4double cross = ComputeXSectionPerAtom(cut);
 
   // allow partial integration
   if(tmax < kinEnergy) { cross -= ComputeXSectionPerAtom(tmax); }
   
   cross *= Z*Z*bremFactor;
 
   return cross;
 }

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G4double G4eBremParametrizedModel::ComputeDEDXPerVolume	(	const G4Material *	material,
		const G4ParticleDefinition *	p,
		G4double	kineticEnergy,
		G4double	cutEnergy
	)

overridevirtual

Reimplemented from G4VEmModel.

Definition at line 201 of file G4eBremParametrizedModel.cc.

 {
   if(!particle) { SetParticle(p); }
   if(kineticEnergy < lowKinEnergy) { return 0.0; }
   G4double cut = std::min(cutEnergy, kineticEnergy);
   if(cut == 0.0) { return 0.0; }
 
   SetupForMaterial(particle, material,kineticEnergy);
 
   const G4ElementVector* theElementVector = material->GetElementVector();
   const G4double* theAtomicNumDensityVector = material->GetAtomicNumDensityVector();
 
   G4double dedx = 0.0;
 
   //  loop for elements in the material
   for (size_t i=0; i<material->GetNumberOfElements(); i++) {
 
     G4VEmModel::SetCurrentElement((*theElementVector)[i]);
     SetCurrentElement((*theElementVector)[i]->GetZ());
 
     dedx += theAtomicNumDensityVector[i]*currentZ*currentZ*ComputeBremLoss(cut);
   }
   dedx *= bremFactor;
 
   return dedx;
 }

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void G4eBremParametrizedModel::Initialise	(	const G4ParticleDefinition *	p,
		const G4DataVector &	cuts
	)

overridevirtual

Implements G4VEmModel.

Definition at line 175 of file G4eBremParametrizedModel.cc.

 {
   if(p) { SetParticle(p); }
 
   lowKinEnergy  = LowEnergyLimit();
 
   currentZ = 0.;
 
   if(IsMaster()) { InitialiseElementSelectors(p, cuts); }
 
   if(isInitialised) { return; }
   fParticleChange = GetParticleChangeForLoss();
   isInitialised = true;
 }

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void G4eBremParametrizedModel::InitialiseLocal	(	const G4ParticleDefinition *	,
		G4VEmModel *	masterModel
	)

overridevirtual

Reimplemented from G4VEmModel.

Definition at line 193 of file G4eBremParametrizedModel.cc.

 {
   SetElementSelectors(masterModel->GetElementSelectors());
 }

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G4double G4eBremParametrizedModel::MinEnergyCut	(	const G4ParticleDefinition *	,
		const G4MaterialCutsCouple *
	)

overridevirtual

Reimplemented from G4VEmModel.

Definition at line 152 of file G4eBremParametrizedModel.cc.

 {
   return minThreshold;
 }

void G4eBremParametrizedModel::SampleSecondaries	(	std::vector< G4DynamicParticle * > *	vdp,
		const G4MaterialCutsCouple *	couple,
		const G4DynamicParticle *	dp,
		G4double	cutEnergy,
		G4double	maxEnergy
	)

overridevirtual

Implements G4VEmModel.

Definition at line 474 of file G4eBremParametrizedModel.cc.

 {
   G4double kineticEnergy = dp->GetKineticEnergy();
   if(kineticEnergy < lowKinEnergy) { return; }
   G4double cut  = std::min(cutEnergy, kineticEnergy);
   G4double emax = std::min(maxEnergy, kineticEnergy);
   if(cut >= emax) { return; }
 
   SetupForMaterial(particle, couple->GetMaterial(),kineticEnergy);
 
   const G4Element* elm = 
     SelectRandomAtom(couple,particle,kineticEnergy,cut,emax);
   SetCurrentElement(elm->GetZ());
 
   kinEnergy   = kineticEnergy;
   totalEnergy = kineticEnergy + particleMass;
   densityCorr = densityFactor*totalEnergy*totalEnergy;
  
   G4double xmin = G4Log(cut*cut + densityCorr);
   G4double xmax = G4Log(emax*emax  + densityCorr);
   G4double gammaEnergy, f, x; 
 
   CLHEP::HepRandomEngine* rndmEngine = G4Random::getTheEngine();
 
   do {
     x = G4Exp(xmin + rndmEngine->flat()*(xmax - xmin)) - densityCorr;
     if(x < 0.0) x = 0.0;
     gammaEnergy = sqrt(x);
     f = ComputeDXSectionPerAtom(gammaEnergy);
 
     if ( f > fMax ) {
       G4cout << "### G4eBremParametrizedModel Warning: Majoranta exceeded! "
          << f << " > " << fMax
          << " Egamma(MeV)= " << gammaEnergy
          << " E(mEV)= " << kineticEnergy
          << G4endl;
     }
 
     // Loop checking, 03-Aug-2015, Vladimir Ivanchenko
   } while (f < fMax*rndmEngine->flat());
 
   //
   // angles of the emitted gamma. ( Z - axis along the parent particle)
   // use general interface
   //
   G4ThreeVector gammaDirection = 
     GetAngularDistribution()->SampleDirection(dp, totalEnergy-gammaEnergy,
                           G4lrint(currentZ), 
                           couple->GetMaterial());
 
   // create G4DynamicParticle object for the Gamma
   G4DynamicParticle* gamma = new G4DynamicParticle(theGamma,gammaDirection,
                            gammaEnergy);
   vdp->push_back(gamma);
   
   G4double totMomentum = sqrt(kineticEnergy*(totalEnergy + electron_mass_c2));
   G4ThreeVector direction = (totMomentum*dp->GetMomentumDirection()
                  - gammaEnergy*gammaDirection).unit();
 
   // energy of primary
   G4double finalE = kineticEnergy - gammaEnergy;
 
   // stop tracking and create new secondary instead of primary
   if(gammaEnergy > SecondaryThreshold()) {
     fParticleChange->ProposeTrackStatus(fStopAndKill);
     fParticleChange->SetProposedKineticEnergy(0.0);
     G4DynamicParticle* el = 
       new G4DynamicParticle(const_cast<G4ParticleDefinition*>(particle),
                 direction, finalE);
     vdp->push_back(el);
 
     // continue tracking
   } else {
     fParticleChange->SetProposedMomentumDirection(direction);
     fParticleChange->SetProposedKineticEnergy(finalE);
   }
 }

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void G4eBremParametrizedModel::SetupForMaterial	(	const G4ParticleDefinition *	,
		const G4Material *	mat,
		G4double	kineticEnergy
	)

overridevirtual

Reimplemented from G4VEmModel.

Definition at line 160 of file G4eBremParametrizedModel.cc.

 {
   densityFactor = mat->GetElectronDensity()*fMigdalConstant;
 
   // calculate threshold for density effect
   kinEnergy   = kineticEnergy;
   totalEnergy = kineticEnergy + particleMass;
   densityCorr = densityFactor*totalEnergy*totalEnergy;    
 }

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Member Data Documentation

G4double G4eBremParametrizedModel::currentZ

protected

Definition at line 142 of file G4eBremParametrizedModel.hh.

G4double G4eBremParametrizedModel::densityCorr

protected

Definition at line 145 of file G4eBremParametrizedModel.hh.

G4double G4eBremParametrizedModel::densityFactor

protected

Definition at line 144 of file G4eBremParametrizedModel.hh.

G4double G4eBremParametrizedModel::facFel

protected

Definition at line 147 of file G4eBremParametrizedModel.hh.

G4double G4eBremParametrizedModel::facFinel

protected

Definition at line 147 of file G4eBremParametrizedModel.hh.

G4double G4eBremParametrizedModel::fCoulomb

protected

Definition at line 148 of file G4eBremParametrizedModel.hh.

G4double G4eBremParametrizedModel::Fel

protected

Definition at line 146 of file G4eBremParametrizedModel.hh.

G4double G4eBremParametrizedModel::Finel

protected

Definition at line 146 of file G4eBremParametrizedModel.hh.

G4double G4eBremParametrizedModel::fMax

protected

Definition at line 148 of file G4eBremParametrizedModel.hh.

G4ParticleChangeForLoss* G4eBremParametrizedModel::fParticleChange

protected

Definition at line 132 of file G4eBremParametrizedModel.hh.

G4bool G4eBremParametrizedModel::isElectron

protected

Definition at line 150 of file G4eBremParametrizedModel.hh.

G4double G4eBremParametrizedModel::kinEnergy

protected

Definition at line 140 of file G4eBremParametrizedModel.hh.

G4double G4eBremParametrizedModel::lnZ

protected

Definition at line 143 of file G4eBremParametrizedModel.hh.

G4double G4eBremParametrizedModel::minThreshold

protected

Definition at line 136 of file G4eBremParametrizedModel.hh.

G4NistManager* G4eBremParametrizedModel::nist

protected

Definition at line 129 of file G4eBremParametrizedModel.hh.

const G4ParticleDefinition* G4eBremParametrizedModel::particle

protected

Definition at line 130 of file G4eBremParametrizedModel.hh.

G4double G4eBremParametrizedModel::particleMass

protected

Definition at line 139 of file G4eBremParametrizedModel.hh.

G4ParticleDefinition* G4eBremParametrizedModel::theGamma

protected

Definition at line 131 of file G4eBremParametrizedModel.hh.

G4double G4eBremParametrizedModel::totalEnergy

protected

Definition at line 141 of file G4eBremParametrizedModel.hh.

const G4double G4eBremParametrizedModel::wgi

staticprotected

Initial value:

={ 0.0506, 0.1112, 0.1569, 0.1813,

0.1813, 0.1569, 0.1112, 0.0506 }

Definition at line 134 of file G4eBremParametrizedModel.hh.

const G4double G4eBremParametrizedModel::xgi

staticprotected

Initial value:

={ 0.0199, 0.1017, 0.2372, 0.4083,

0.5917, 0.7628, 0.8983, 0.9801 }

Definition at line 134 of file G4eBremParametrizedModel.hh.

G4double G4eBremParametrizedModel::z13

protected

Definition at line 143 of file G4eBremParametrizedModel.hh.

G4double G4eBremParametrizedModel::z23

protected

Definition at line 143 of file G4eBremParametrizedModel.hh.

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

source/geant4.10.03.p03/source/processes/electromagnetic/standard/include/G4eBremParametrizedModel.hh
source/geant4.10.03.p03/source/processes/electromagnetic/standard/src/G4eBremParametrizedModel.cc

Public Member Functions

Protected Attributes

Static Protected Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation