#include <G4LivermoreBremsstrahlungModel.hh>

Inheritance diagram for G4LivermoreBremsstrahlungModel:

Collaboration diagram for G4LivermoreBremsstrahlungModel:

Public Member Functions
	G4LivermoreBremsstrahlungModel (const G4ParticleDefinition *p=0, const G4String &nam="LowEnBrem")

virtual	~G4LivermoreBremsstrahlungModel ()

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

virtual void	InitialiseForElement (const G4ParticleDefinition *, G4int Z)

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

void	SetBicubicInterpolationFlag (G4bool)

Public Member Functions inherited from G4eBremsstrahlungRelModel
	G4eBremsstrahlungRelModel (const G4ParticleDefinition *p=0, const G4String &nam="eBremLPM")

virtual	~G4eBremsstrahlungRelModel ()

virtual void	InitialiseLocal (const G4ParticleDefinition , G4VEmModel masterModel)

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

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

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

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

void	SetLPMconstant (G4double val)

G4double	LPMconstant () const

void	SetLowestKinEnergy (G4double)

G4double	LowestKinEnergy () const

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

virtual	~G4VEmModel ()

virtual void	InitialiseForMaterial (const G4ParticleDefinition , const G4Material )

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

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

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	MinEnergyCut (const G4ParticleDefinition , const G4MaterialCutsCouple )

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 > )

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=0)

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	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 Member Functions
virtual G4double	ComputeDXSectionPerAtom (G4double gammaEnergy)

virtual G4String	DirectoryPath () const

Protected Member Functions inherited from G4eBremsstrahlungRelModel
void	SetCurrentElement (const G4double)

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 *)

Private Member Functions
void	ReadData (G4int Z, const char *path=0)

G4LivermoreBremsstrahlungModel &	operator= (const G4LivermoreBremsstrahlungModel &right)

	G4LivermoreBremsstrahlungModel (const G4LivermoreBremsstrahlungModel &)

Private Attributes
G4int	nwarn

size_t	idx

size_t	idy

G4bool	useBicubicInterpolation

Static Private Attributes
static G4Physics2DVector *	dataSB [101] = {0}

static G4double	ylimit [101] = {0.0}

static G4double	expnumlim = -12.

Additional Inherited Members
Protected Attributes inherited from G4eBremsstrahlungRelModel
G4NistManager *	nist

const G4ParticleDefinition *	particle

G4ParticleDefinition *	theGamma

G4ParticleChangeForLoss *	fParticleChange

G4double	bremFactor

G4double	particleMass

G4double	kinEnergy

G4double	totalEnergy

G4double	currentZ

G4double	densityFactor

G4double	densityCorr

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

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

Detailed Description

Definition at line 61 of file G4LivermoreBremsstrahlungModel.hh.

Constructor & Destructor Documentation

◆ G4LivermoreBremsstrahlungModel() [1/2]

G4LivermoreBremsstrahlungModel::G4LivermoreBremsstrahlungModel	(	const G4ParticleDefinition *	p = `0`,
		const G4String &	nam = `"LowEnBrem"`
	)

Definition at line 83 of file G4LivermoreBremsstrahlungModel.cc.

   : G4eBremsstrahlungRelModel(p,nam),useBicubicInterpolation(false)
 {
   SetLowEnergyLimit(10.0*eV);
   SetLPMFlag(false);
   nwarn = 0;
   idx = idy = 0;
   SetAngularDistribution(new G4Generator2BS());
 }

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◆ ~G4LivermoreBremsstrahlungModel()

G4LivermoreBremsstrahlungModel::~G4LivermoreBremsstrahlungModel ( )

virtual

Definition at line 96 of file G4LivermoreBremsstrahlungModel.cc.

 {
   if(IsMaster()) {
     for(size_t i=0; i<101; ++i) { 
       if(dataSB[i]) {
     delete dataSB[i]; 
     dataSB[i] = 0;
       } 
     }
   }
 }

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◆ G4LivermoreBremsstrahlungModel() [2/2]

G4LivermoreBremsstrahlungModel::G4LivermoreBremsstrahlungModel ( const G4LivermoreBremsstrahlungModel & )

private

Member Function Documentation

◆ ComputeDXSectionPerAtom()

G4double G4LivermoreBremsstrahlungModel::ComputeDXSectionPerAtom ( G4double gammaEnergy )

protectedvirtual

Reimplemented from G4eBremsstrahlungRelModel.

Definition at line 196 of file G4LivermoreBremsstrahlungModel.cc.

 {
 
   if(gammaEnergy < 0.0 || kinEnergy <= 0.0) { return 0.0; }
   G4double x = gammaEnergy/kinEnergy;
   G4double y = G4Log(kinEnergy/MeV);
   G4int Z = G4lrint(currentZ);
 
   //G4cout << "G4LivermoreBremsstrahlungModel::ComputeDXSectionPerAtom Z= " << Z
   //     << " x= " << x << " y= " << y << " " << dataSB[Z] << G4endl;
   if(!dataSB[Z]) { InitialiseForElement(0, Z); }
   /*
     G4ExceptionDescription ed;
     ed << "Bremsstrahlung data for Z= " << Z
        << " are not initialized!";
     G4Exception("G4LivermoreBremsstrahlungModel::ComputeDXSectionPerAtom()",
                 "em0005", FatalException, ed,
         "G4LEDATA version should be G4EMLOW6.23 or later.");
   }
   */
   G4double invb2 = 
     totalEnergy*totalEnergy/(kinEnergy*(kinEnergy + 2*particleMass));
   G4double cross = dataSB[Z]->Value(x,y,idx,idy)*invb2*millibarn/bremFactor;
   
   if(!isElectron) {
     G4double invbeta1 = sqrt(invb2);
     G4double e2 = kinEnergy - gammaEnergy;
     if(e2 > 0.0) {
       G4double invbeta2 = (e2 + particleMass)/sqrt(e2*(e2 + 2*particleMass));
       G4double xxx = alpha*currentZ*(invbeta1 - invbeta2);
       if(xxx < expnumlim) { cross = 0.0; }
       else { cross *= G4Exp(xxx); }
     } else {
       cross = 0.0;
     }
   }
   
   return cross;
 }

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◆ DirectoryPath()

G4String G4LivermoreBremsstrahlungModel::DirectoryPath ( ) const

protectedvirtual

Definition at line 139 of file G4LivermoreBremsstrahlungModel.cc.

 {
   return "/livermore/brem/br";
 }

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◆ Initialise()

void G4LivermoreBremsstrahlungModel::Initialise	(	const G4ParticleDefinition *	p,
		const G4DataVector &	cuts
	)

virtual

Reimplemented from G4eBremsstrahlungRelModel.

Definition at line 110 of file G4LivermoreBremsstrahlungModel.cc.

 {
   // Access to elements
   if(IsMaster()) {
 
     // check environment variable
     // Build the complete string identifying the file with the data set
     char* path = getenv("G4LEDATA");
 
     const G4ElementTable* theElmTable = G4Element::GetElementTable();
     size_t numOfElm = G4Element::GetNumberOfElements();
     if(numOfElm > 0) {
       for(size_t i=0; i<numOfElm; ++i) {
     G4int Z = G4int(((*theElmTable)[i])->GetZ());
     if(Z < 1)        { Z = 1; }
     else if(Z > 100) { Z = 100; }
     //G4cout << "Z= " << Z << G4endl;
     // Initialisation
     if(!dataSB[Z]) { ReadData(Z, path); }
       }
     }
   }
 
   G4eBremsstrahlungRelModel::Initialise(p, cuts);
 }

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◆ InitialiseForElement()

void G4LivermoreBremsstrahlungModel::InitialiseForElement	(	const G4ParticleDefinition *	,
		G4int	Z
	)

virtual

Reimplemented from G4VEmModel.

Definition at line 374 of file G4LivermoreBremsstrahlungModel.cc.

 {
   G4AutoLock l(&LivermoreBremsstrahlungModelMutex);
   //G4cout << "G4LivermoreBremsstrahlungModel::InitialiseForElement Z= " 
   //<< Z << G4endl;
   if(!dataSB[Z]) { ReadData(Z); }
   l.unlock();
 }

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◆ operator=()

G4LivermoreBremsstrahlungModel& G4LivermoreBremsstrahlungModel::operator= ( const G4LivermoreBremsstrahlungModel & right )

private

◆ ReadData()

void G4LivermoreBremsstrahlungModel::ReadData	(	G4int	Z,
		const char *	path = `0`
	)

private

Definition at line 146 of file G4LivermoreBremsstrahlungModel.cc.

 {
   //  G4cout << "ReadData Z= " << Z << G4endl;
   // G4cout << "Status for Z= " << dataSB[Z] << G4endl;
   //if(path) { G4cout << path << G4endl; }
   if(dataSB[Z]) { return; }
   const char* datadir = path;
 
   if(!datadir) {
     datadir = getenv("G4LEDATA");
     if(!datadir) {
       G4Exception("G4LivermoreBremsstrahlungModel::ReadData()","em0006",
           FatalException,"Environment variable G4LEDATA not defined");
       return;
     }
   }
   std::ostringstream ost;
   ost << datadir << DirectoryPath() << Z;
   std::ifstream fin(ost.str().c_str());
   if( !fin.is_open()) {
     G4ExceptionDescription ed;
     ed << "Bremsstrahlung data file <" << ost.str().c_str()
        << "> is not opened!";
     G4Exception("G4LivermoreBremsstrahlungModel::ReadData()","em0003",
         FatalException,ed,
         "G4LEDATA version should be G4EMLOW6.23 or later.");
     return;
   } 
   //G4cout << "G4LivermoreBremsstrahlungModel read from <" << ost.str().c_str() 
   //     << ">" << G4endl;
   G4Physics2DVector* v = new G4Physics2DVector();
   if(v->Retrieve(fin)) { 
     if(useBicubicInterpolation) { v->SetBicubicInterpolation(true); }
     dataSB[Z] = v; 
     ylimit[Z] = v->Value(0.97, emaxlog, idx, idy);
   } else {
     G4ExceptionDescription ed;
     ed << "Bremsstrahlung data file <" << ost.str().c_str()
        << "> is not retrieved!";
     G4Exception("G4LivermoreBremsstrahlungModel::ReadData()","em0005",
                 FatalException,ed,
         "G4LEDATA version should be G4EMLOW6.23 or later.");
     delete v;
   }
   // G4cout << dataSB[Z] << G4endl;
 }

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◆ SampleSecondaries()

void G4LivermoreBremsstrahlungModel::SampleSecondaries	(	std::vector< G4DynamicParticle >	vdp,
		const G4MaterialCutsCouple *	couple,
		const G4DynamicParticle *	dp,
		G4double	cutEnergy,
		G4double	maxEnergy
	)

virtual

Reimplemented from G4eBremsstrahlungRelModel.

Definition at line 239 of file G4LivermoreBremsstrahlungModel.cc.

 {
   G4double kineticEnergy = dp->GetKineticEnergy();
   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());
   G4int Z = G4int(currentZ);
 
   totalEnergy = kineticEnergy + particleMass;
   densityCorr = densityFactor*totalEnergy*totalEnergy;
   G4double totMomentum = sqrt(kineticEnergy*(totalEnergy + electron_mass_c2));
   /*
   G4cout << "G4LivermoreBremsstrahlungModel::SampleSecondaries E(MeV)= " 
      << kineticEnergy/MeV
      << " Z= " << Z << " cut(MeV)= " << cut/MeV 
      << " emax(MeV)= " << emax/MeV << " corr= " << densityCorr << G4endl;
   */
   G4double xmin = G4Log(cut*cut + densityCorr);
   G4double xmax = G4Log(emax*emax  + densityCorr);
   G4double y = G4Log(kineticEnergy/MeV);
 
   G4double gammaEnergy, v; 
 
   // majoranta
   G4double x0 = cut/kineticEnergy;
   G4double vmax = dataSB[Z]->Value(x0, y, idx, idy)*1.02;
   //  G4double invbeta1 = 0;
 
   // majoranta corrected for e-
   if(isElectron && x0 < 0.97 && 
      ((kineticEnergy > epeaklimit) || (kineticEnergy < elowlimit))) {
     G4double ylim = std::min(ylimit[Z],1.1*dataSB[Z]->Value(0.97,y,idx,idy));
     if(ylim > vmax) { vmax = ylim; }
   }
   if(x0 < 0.05) { vmax *= 1.2; }
 
   //G4cout<<"y= "<<y<<" xmin= "<<xmin<<" xmax= "<<xmax
   //<<" vmax= "<<vmax<<G4endl;
   //  G4int ncount = 0;
   do {
     //++ncount;
     G4double x = G4Exp(xmin + G4UniformRand()*(xmax - xmin)) - densityCorr;
     if(x < 0.0) { x = 0.0; }
     gammaEnergy = sqrt(x);
     G4double x1 = gammaEnergy/kineticEnergy;
     v = dataSB[Z]->Value(x1, y, idx, idy);
 
     // correction for positrons        
     if(!isElectron) {
       G4double e1 = kineticEnergy - cut;
       G4double invbeta1 = (e1 + particleMass)/sqrt(e1*(e1 + 2*particleMass));
       G4double e2 = kineticEnergy - gammaEnergy;
       G4double invbeta2 = (e2 + particleMass)/sqrt(e2*(e2 + 2*particleMass));
       G4double xxx = twopi*fine_structure_const*currentZ*(invbeta1 - invbeta2);
 
       if(xxx < expnumlim) { v = 0.0; }
       else { v *= G4Exp(xxx); }
     }
    
     if (v > 1.05*vmax && nwarn < 5) {
       ++nwarn;
       G4ExceptionDescription ed;
       ed << "### G4LivermoreBremsstrahlungModel Warning: Majoranta exceeded! "
      << v << " > " << vmax << " by " << v/vmax
      << " Egamma(MeV)= " << gammaEnergy
      << " Ee(MeV)= " << kineticEnergy
      << " Z= " << Z << "  " << particle->GetParticleName();
      
       if ( 20 == nwarn ) {
     ed << "\n ### G4LivermoreBremsstrahlungModel Warnings stopped";
       }
       G4Exception("G4LivermoreBremsstrahlungModel::SampleScattering","em0044",
           JustWarning, ed,"");
 
     }
   } while (v < vmax*G4UniformRand());
 
   //
   // angles of the emitted gamma. ( Z - axis along the parent particle)
   // use general interface
   //
 
   G4ThreeVector gammaDirection = 
     GetAngularDistribution()->SampleDirection(dp, totalEnergy-gammaEnergy,
                           Z, couple->GetMaterial());
 
   // create G4DynamicParticle object for the Gamma
   G4DynamicParticle* gamma = 
     new G4DynamicParticle(theGamma,gammaDirection,gammaEnergy);
   vdp->push_back(gamma);
   
   G4ThreeVector direction = (totMomentum*dp->GetMomentumDirection()
                  - gammaEnergy*gammaDirection).unit();
 
   /*
   G4cout << "### G4SBModel: v= "
      << " Eg(MeV)= " << gammaEnergy
      << " Ee(MeV)= " << kineticEnergy
      << " DirE " << direction << " DirG " << gammaDirection
      << G4endl;
   */
   // 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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◆ SetBicubicInterpolationFlag()

void G4LivermoreBremsstrahlungModel::SetBicubicInterpolationFlag ( G4bool val )

inline

Definition at line 106 of file G4LivermoreBremsstrahlungModel.hh.

 {
   useBicubicInterpolation = val;
 }

Member Data Documentation

◆ dataSB

G4Physics2DVector * G4LivermoreBremsstrahlungModel::dataSB = {0}

staticprivate

Definition at line 97 of file G4LivermoreBremsstrahlungModel.hh.

◆ expnumlim

G4double G4LivermoreBremsstrahlungModel::expnumlim = -12.

staticprivate

Definition at line 99 of file G4LivermoreBremsstrahlungModel.hh.

◆ idx

size_t G4LivermoreBremsstrahlungModel::idx

private

Definition at line 101 of file G4LivermoreBremsstrahlungModel.hh.

◆ idy

size_t G4LivermoreBremsstrahlungModel::idy

private

Definition at line 102 of file G4LivermoreBremsstrahlungModel.hh.

◆ nwarn

G4int G4LivermoreBremsstrahlungModel::nwarn

private

Definition at line 100 of file G4LivermoreBremsstrahlungModel.hh.

◆ useBicubicInterpolation

G4bool G4LivermoreBremsstrahlungModel::useBicubicInterpolation

private

Definition at line 103 of file G4LivermoreBremsstrahlungModel.hh.

◆ ylimit

G4double G4LivermoreBremsstrahlungModel::ylimit = {0.0}

staticprivate

Definition at line 98 of file G4LivermoreBremsstrahlungModel.hh.

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

Public Member Functions

Protected Member Functions

Private Member Functions

Private Attributes

Static Private Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ G4LivermoreBremsstrahlungModel() [1/2]

◆ ~G4LivermoreBremsstrahlungModel()

◆ G4LivermoreBremsstrahlungModel() [2/2]

Member Function Documentation

◆ ComputeDXSectionPerAtom()

◆ DirectoryPath()

◆ Initialise()

◆ InitialiseForElement()

◆ operator=()

◆ ReadData()

◆ SampleSecondaries()

◆ SetBicubicInterpolationFlag()

Member Data Documentation

◆ dataSB

◆ expnumlim

◆ idx

◆ idy

◆ nwarn

◆ useBicubicInterpolation

◆ ylimit