#include <G4WentzelVIModel.hh>

Inheritance diagram for G4WentzelVIModel:

Public Member Functions
	G4WentzelVIModel (G4bool comb=true, const G4String &nam="WentzelVIUni")

	~G4WentzelVIModel () override

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

void	InitialiseLocal (const G4ParticleDefinition , G4VEmModel masterModel) override

void	StartTracking (G4Track *) override

G4double	ComputeCrossSectionPerAtom (const G4ParticleDefinition *, G4double KineticEnergy, G4double AtomicNumber, G4double AtomicWeight=0., G4double cut=DBL_MAX, G4double emax=DBL_MAX) override

G4ThreeVector &	SampleScattering (const G4ThreeVector &, G4double safety) override

G4double	ComputeTruePathLengthLimit (const G4Track &track, G4double &currentMinimalStep) override

G4double	ComputeGeomPathLength (G4double truePathLength) override

G4double	ComputeTrueStepLength (G4double geomStepLength) override

void	SetFixedCut (G4double)

G4double	GetFixedCut () const

void	SetWVICrossSection (G4WentzelOKandVIxSection *)

G4WentzelOKandVIxSection *	GetWVICrossSection ()

void	SetUseSecondMoment (G4bool)

G4bool	UseSecondMoment () const

G4PhysicsTable *	GetSecondMomentTable ()

G4double	SecondMoment (const G4ParticleDefinition , const G4MaterialCutsCouple , G4double kineticEnergy)

void	SetSingleScatteringFactor (G4double)

void	DefineMaterial (const G4MaterialCutsCouple *)

G4WentzelVIModel &	operator= (const G4WentzelVIModel &right)=delete

	G4WentzelVIModel (const G4WentzelVIModel &)=delete

Public Member Functions inherited from G4VMscModel
	G4VMscModel (const G4String &nam)

	~G4VMscModel () override

void	InitialiseParameters (const G4ParticleDefinition *)

void	DumpParameters (std::ostream &out) const

void	SampleSecondaries (std::vector< G4DynamicParticle * > , const G4MaterialCutsCouple , const G4DynamicParticle *, G4double tmin, G4double tmax) override

void	SetStepLimitType (G4MscStepLimitType)

void	SetLateralDisplasmentFlag (G4bool val)

void	SetRangeFactor (G4double)

void	SetGeomFactor (G4double)

void	SetSkin (G4double)

void	SetLambdaLimit (G4double)

void	SetSafetyFactor (G4double)

void	SetSampleZ (G4bool)

G4VEnergyLossProcess *	GetIonisation () const

void	SetIonisation (G4VEnergyLossProcess , const G4ParticleDefinition part)

G4double	ComputeSafety (const G4ThreeVector &position, G4double limit=DBL_MAX)

G4double	ComputeGeomLimit (const G4Track &, G4double &presafety, G4double limit)

G4double	GetDEDX (const G4ParticleDefinition part, G4double kineticEnergy, const G4MaterialCutsCouple couple)

G4double	GetDEDX (const G4ParticleDefinition part, G4double kineticEnergy, const G4MaterialCutsCouple couple, G4double logKineticEnergy)

G4double	GetRange (const G4ParticleDefinition part, G4double kineticEnergy, const G4MaterialCutsCouple couple)

G4double	GetRange (const G4ParticleDefinition part, G4double kineticEnergy, const G4MaterialCutsCouple couple, G4double logKineticEnergy)

G4double	GetEnergy (const G4ParticleDefinition part, G4double range, const G4MaterialCutsCouple couple)

G4double	GetTransportMeanFreePath (const G4ParticleDefinition *part, G4double kinEnergy)

G4double	GetTransportMeanFreePath (const G4ParticleDefinition *part, G4double kinEnergy, G4double logKinEnergy)

G4VMscModel &	operator= (const G4VMscModel &right)=delete

	G4VMscModel (const G4VMscModel &)=delete

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	ComputeDEDXPerVolume (const G4Material , const G4ParticleDefinition , G4double kineticEnergy, G4double cutEnergy=DBL_MAX)

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	CorrectionsAlongStep (const G4MaterialCutsCouple , const G4DynamicParticle , const G4double &length, G4double &eloss)

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

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

virtual G4double	MinEnergyCut (const G4ParticleDefinition , const G4MaterialCutsCouple )

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

virtual void	DefineForRegion (const G4Region *)

virtual void	FillNumberOfSecondaries (G4int &numberOfTriplets, G4int &numberOfRecoil)

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)

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

const G4Element *	SelectTargetAtom (const G4MaterialCutsCouple , const G4ParticleDefinition , G4double kineticEnergy, G4double logKineticEnergy, 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)

const G4Element *	GetCurrentElement (const G4Material *mat=nullptr) const

G4int	SelectRandomAtomNumber (const G4Material *) const

const G4Isotope *	GetCurrentIsotope (const G4Element *elm=nullptr) const

G4int	SelectIsotopeNumber (const G4Element *) const

void	SetParticleChange (G4VParticleChange , G4VEmFluctuationModel f=nullptr)

void	SetCrossSectionTable (G4PhysicsTable *, G4bool isLocal)

G4ElementData *	GetElementData ()

G4PhysicsTable *	GetCrossSectionTable ()

G4VEmFluctuationModel *	GetModelOfFluctuations ()

G4VEmAngularDistribution *	GetAngularDistribution ()

G4VEmModel *	GetTripletModel ()

void	SetTripletModel (G4VEmModel *)

void	SetAngularDistribution (G4VEmAngularDistribution *)

G4double	HighEnergyLimit () const

G4double	LowEnergyLimit () const

G4double	HighEnergyActivationLimit () const

G4double	LowEnergyActivationLimit () const

G4double	PolarAngleLimit () const

G4double	SecondaryThreshold () 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) const

void	SetPolarAngleLimit (G4double)

void	SetSecondaryThreshold (G4double)

void	SetDeexcitationFlag (G4bool val)

void	SetForceBuildTable (G4bool val)

void	SetFluctuationFlag (G4bool val)

void	SetMasterThread (G4bool val)

G4bool	IsMaster () const

void	SetUseBaseMaterials (G4bool val)

G4bool	UseBaseMaterials () const

G4double	MaxSecondaryKinEnergy (const G4DynamicParticle *dynParticle)

const G4String &	GetName () const

void	SetCurrentCouple (const G4MaterialCutsCouple *)

G4bool	IsLocked () const

void	SetLocked (G4bool)

void	SetLPMFlag (G4bool)

G4VEmModel &	operator= (const G4VEmModel &right)=delete

	G4VEmModel (const G4VEmModel &)=delete

Protected Member Functions
G4double	ComputeTransportXSectionPerVolume (G4double cosTheta)

void	SetupParticle (const G4ParticleDefinition *)

Protected Member Functions inherited from G4VMscModel
G4ParticleChangeForMSC *	GetParticleChangeForMSC (const G4ParticleDefinition *p=nullptr)

G4double	ConvertTrueToGeom (G4double &tLength, G4double &gLength)

void	SetUseSplineForMSC (G4bool val)

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 *)

Protected Attributes
G4WentzelOKandVIxSection *	wokvi

const G4MaterialCutsCouple *	currentCouple = nullptr

const G4Material *	currentMaterial = nullptr

const G4ParticleDefinition *	particle = nullptr

G4ParticleChangeForMSC *	fParticleChange = nullptr

const G4DataVector *	currentCuts = nullptr

G4PhysicsTable *	fSecondMoments = nullptr

G4double	lowEnergyLimit

G4double	tlimitminfix

G4double	ssFactor = 1.05

G4double	invssFactor = 1.0

G4double	preKinEnergy = 0.0

G4double	tPathLength = 0.0

G4double	zPathLength = 0.0

G4double	lambdaeff = 0.0

G4double	currentRange = 0.0

G4double	cosTetMaxNuc = 0.0

G4double	fixedCut = -1.0

G4double	effKinEnergy = 0.0

G4double	cosThetaMin = 1.0

G4double	cosThetaMax = -1.0

G4double	xtsec = 0.0

G4int	currentMaterialIndex = 0

size_t	idx2 = 0

G4int	nelments = 0

G4bool	singleScatteringMode

G4bool	isCombined

G4bool	useSecondMoment

std::vector< G4double >	xsecn

std::vector< G4double >	prob

Protected Attributes inherited from G4VMscModel
G4double	facrange = 0.04

G4double	facgeom = 2.5

G4double	facsafety = 0.6

G4double	skin = 1.0

G4double	dtrl = 0.05

G4double	lambdalimit

G4double	geomMin

G4double	geomMax

G4ThreeVector	fDisplacement

G4MscStepLimitType	steppingAlgorithm

G4bool	samplez = false

G4bool	latDisplasment = true

Protected Attributes inherited from G4VEmModel
G4ElementData *	fElementData = nullptr

G4VParticleChange *	pParticleChange = nullptr

G4PhysicsTable *	xSectionTable = nullptr

const G4Material *	pBaseMaterial = nullptr

const std::vector< G4double > *	theDensityFactor = nullptr

const std::vector< G4int > *	theDensityIdx = nullptr

G4double	inveplus

G4double	pFactor = 1.0

std::size_t	currentCoupleIndex = 0

std::size_t	basedCoupleIndex = 0

G4bool	lossFlucFlag = true

Detailed Description

Definition at line 65 of file G4WentzelVIModel.hh.

Constructor & Destructor Documentation

◆ G4WentzelVIModel() [1/2]

G4WentzelVIModel::G4WentzelVIModel	(	G4bool	comb = true,
		const G4String &	nam = "WentzelVIUni" )

explicit

Definition at line 77 of file G4WentzelVIModel.cc.

  : G4VMscModel(nam),
    singleScatteringMode(false),
    isCombined(comb),
    useSecondMoment(false)
{
  tlimitminfix = 1.e-6*CLHEP::mm;
  lowEnergyLimit = 1.0*CLHEP::eV;
  SetSingleScatteringFactor(1.25);
  wokvi = new G4WentzelOKandVIxSection(isCombined);
}

◆ ~G4WentzelVIModel()

G4WentzelVIModel::~G4WentzelVIModel ( )

override

Definition at line 91 of file G4WentzelVIModel.cc.

{
  delete wokvi;
  if(IsMaster()) {
    delete fSecondMoments;
    fSecondMoments = nullptr;
  }
}

◆ G4WentzelVIModel() [2/2]

G4WentzelVIModel::G4WentzelVIModel ( const G4WentzelVIModel & )

delete

Member Function Documentation

◆ ComputeCrossSectionPerAtom()

G4double G4WentzelVIModel::ComputeCrossSectionPerAtom	(	const G4ParticleDefinition *	p,
		G4double	KineticEnergy,
		G4double	AtomicNumber,
		G4double	AtomicWeight = 0.,
		G4double	cut = DBL_MAX,
		G4double	emax = DBL_MAX )

overridevirtual

Reimplemented from G4VEmModel.

Reimplemented in G4WentzelVIRelModel.

Definition at line 211 of file G4WentzelVIModel.cc.

{
  G4double cross = 0.0;
  SetupParticle(p); 
  if(kinEnergy < lowEnergyLimit) { return cross; }
  if(nullptr == CurrentCouple()) {
    G4Exception("G4WentzelVIModel::ComputeCrossSectionPerAtom", "em0011",
                FatalException, " G4MaterialCutsCouple is not defined");
    return 0.0;
  }
  DefineMaterial(CurrentCouple());
  cosTetMaxNuc = wokvi->SetupKinematic(kinEnergy, currentMaterial);
  if(cosTetMaxNuc < 1.0) {
    G4double cut  = (0.0 < fixedCut) ? fixedCut : cutEnergy;
    G4double cost = wokvi->SetupTarget(G4lrint(Z), cut);
    cross = wokvi->ComputeTransportCrossSectionPerAtom(cost);
    /*
    if(p->GetParticleName() == "e-")      
    G4cout << "G4WentzelVIModel::CS: Z= " << G4int(Z) << " e(MeV)= "<<kinEnergy 
           << " 1-cosN= " << 1 - cosTetMaxNuc << " cross(bn)= " << cross/barn
           << " " << particle->GetParticleName() << G4endl;
    */
  }
  return cross;
}

◆ ComputeGeomPathLength()

G4double G4WentzelVIModel::ComputeGeomPathLength ( G4double truePathLength )

overridevirtual

Implements G4VMscModel.

Definition at line 353 of file G4WentzelVIModel.cc.

{
  zPathLength = tPathLength = truelength;
 
  // small step use only single scattering
  cosThetaMin = 1.0;
  ComputeTransportXSectionPerVolume(cosThetaMin);
  //G4cout << "xtsec= " << xtsec << "  Nav= " 
  //         << zPathLength*xtsec << G4endl;
  if(0.0 >= lambdaeff || G4int(zPathLength*xtsec) < minNCollisions) {
    singleScatteringMode = true;
    lambdaeff = DBL_MAX;
 
  } else {
    //G4cout << "ComputeGeomPathLength: tLength= " << tPathLength
    //           << " Leff= " << lambdaeff << G4endl; 
    // small step
    if(tPathLength < numlimit*lambdaeff) {
      G4double tau = tPathLength/lambdaeff;
      zPathLength *= (1.0 - 0.5*tau + tau*tau/6.0);
 
      // medium step
    } else {
      G4double e1 = 0.0;
      if(currentRange > tPathLength) {
        e1 = GetEnergy(particle,currentRange-tPathLength,currentCouple);
      }
      effKinEnergy = 0.5*(e1 + preKinEnergy);
      cosTetMaxNuc = wokvi->SetupKinematic(effKinEnergy, currentMaterial);
      lambdaeff = GetTransportMeanFreePath(particle, effKinEnergy);
      //G4cout << " tLength= "<< tPathLength<< " Leff= " << lambdaeff << G4endl;
      zPathLength = lambdaeff;
      if(tPathLength*numlimit < lambdaeff) {
        zPathLength *= (1.0 - G4Exp(-tPathLength/lambdaeff));
      }
    }
  }
  //G4cout << "Comp.geom: zLength= "<<zPathLength<<" tLength= "
  //         << tPathLength<< " Leff= " << lambdaeff << G4endl;
  return zPathLength;
}

◆ ComputeTransportXSectionPerVolume()

G4double G4WentzelVIModel::ComputeTransportXSectionPerVolume ( G4double cosTheta )

protected

Definition at line 704 of file G4WentzelVIModel.cc.

{
  // prepare recomputation of x-sections
  const G4ElementVector* theElementVector = currentMaterial->GetElementVector();
  const G4double* theAtomNumDensityVector = 
    currentMaterial->GetVecNbOfAtomsPerVolume();
  G4int nelm = (G4int)currentMaterial->GetNumberOfElements();
  if(nelm > nelments) {
    nelments = nelm;
    xsecn.resize(nelm);
    prob.resize(nelm);
  }
 
  // check consistency
  xtsec = 0.0;
  if(cosTetMaxNuc >= cosTheta) { return 0.0; }
 
  G4double cut = (*currentCuts)[currentMaterialIndex];
  if(fixedCut > 0.0) { cut = fixedCut; }
 
  // loop over elements
  G4double xs = 0.0;
  for (G4int i=0; i<nelm; ++i) {
    G4double costm = 
      wokvi->SetupTarget((*theElementVector)[i]->GetZasInt(), cut);
    G4double density = theAtomNumDensityVector[i];
 
    G4double esec = 0.0;
    if(costm < cosTheta) {  
 
      // recompute the transport x-section
      if(1.0 > cosTheta) {
        xs += density*wokvi->ComputeTransportCrossSectionPerAtom(cosTheta);
      }
      // recompute the total x-section
      G4double nucsec = wokvi->ComputeNuclearCrossSection(cosTheta, costm);
      esec = wokvi->ComputeElectronCrossSection(cosTheta, costm);
      nucsec += esec;
      if(nucsec > 0.0) { esec /= nucsec; }
      xtsec += nucsec*density;
    }
    xsecn[i] = xtsec;
    prob[i]  = esec;
    //G4cout << i << "  xs= " << xs << " xtsec= " << xtsec 
    //       << " 1-cosTheta= " << 1-cosTheta 
    //           << " 1-cosTetMaxNuc2= " <<1-cosTetMaxNuc2<< G4endl;
  }
  
  //G4cout << "ComputeXS result:  xsec(1/mm)= " << xs 
  //         << " txsec(1/mm)= " << xtsec <<G4endl; 
  return xs;
}

Referenced by ComputeGeomPathLength(), and ComputeTrueStepLength().

◆ ComputeTruePathLengthLimit()

G4double G4WentzelVIModel::ComputeTruePathLengthLimit	(	const G4Track &	track,
		G4double &	currentMinimalStep )

overridevirtual

Implements G4VMscModel.

Definition at line 255 of file G4WentzelVIModel.cc.

{
  G4double tlimit = currentMinimalStep;
  const G4DynamicParticle* dp = track.GetDynamicParticle();
  const G4StepPoint* sp = track.GetStep()->GetPreStepPoint();
  G4StepStatus stepStatus = sp->GetStepStatus();
  singleScatteringMode = false;
 
  //G4cout << "G4WentzelVIModel::ComputeTruePathLengthLimit stepStatus= " 
  //         << stepStatus << "  " << track.GetDefinition()->GetParticleName() 
  //         << G4endl;
 
  // initialisation for each step, lambda may be computed from scratch
  preKinEnergy = dp->GetKineticEnergy();
  effKinEnergy = preKinEnergy;
  DefineMaterial(track.GetMaterialCutsCouple());
  const G4double logPreKinEnergy = dp->GetLogKineticEnergy();
  lambdaeff = GetTransportMeanFreePath(particle,preKinEnergy,logPreKinEnergy);
  currentRange = GetRange(particle,preKinEnergy,currentCouple,logPreKinEnergy);
  cosTetMaxNuc = wokvi->SetupKinematic(preKinEnergy, currentMaterial);
  
  //G4cout << "lambdaeff= " << lambdaeff << " Range= " << currentRange
  // << " tlimit= " << tlimit << " 1-cost= " << 1 - cosTetMaxNuc << G4endl;
  
  // extra check for abnormal situation
  // this check needed to run MSC with eIoni and eBrem inactivated
  if(tlimit > currentRange) { tlimit = currentRange; }
 
  // stop here if small range particle
  if(tlimit < tlimitminfix) { 
    return ConvertTrueToGeom(tlimit, currentMinimalStep); 
  }
 
  // pre step
  G4double presafety = sp->GetSafety();
  // far from geometry boundary
  if(currentRange < presafety) {
    return ConvertTrueToGeom(tlimit, currentMinimalStep);
  }
 
  // compute presafety again if presafety <= 0 and no boundary
  // i.e. when it is needed for optimization purposes
  if(stepStatus != fGeomBoundary && presafety < tlimitminfix) {
    presafety = ComputeSafety(sp->GetPosition(), tlimit); 
    if(currentRange < presafety) {
      return ConvertTrueToGeom(tlimit, currentMinimalStep);
    }
  }
  /*       
  G4cout << "e(MeV)= " << preKinEnergy/MeV
         << "  " << particle->GetParticleName() 
         << " CurLimit(mm)= " << tlimit/mm <<" safety(mm)= " << presafety/mm
         << " R(mm)= " <<currentRange/mm
         << " L0(mm^-1)= " << lambdaeff*mm 
         << G4endl;
  */
  // natural limit for high energy
  G4double rlimit = std::max(facrange*currentRange, 
                             (1.0 - cosTetMaxNuc)*lambdaeff*invssFactor);
 
  // low-energy e-
  if(cosThetaMax > cosTetMaxNuc) {
    rlimit = std::min(rlimit, facsafety*presafety);
  }
   
  // cut correction
  G4double rcut = currentCouple->GetProductionCuts()->GetProductionCut(1);
  //G4cout << "rcut= " << rcut << " rlimit= " << rlimit << " presafety= " 
  // << presafety << " 1-cosThetaMax= " <<1-cosThetaMax 
  //<< " 1-cosTetMaxNuc= " << 1-cosTetMaxNuc << G4endl;
  if(rcut > rlimit) { rlimit = std::min(rlimit, rcut*sqrt(rlimit/rcut)); }
 
  tlimit = std::min(tlimit, rlimit);
  tlimit = std::max(tlimit, tlimitminfix);
 
  // step limit in infinite media
  tlimit = std::min(tlimit, 50*currentMaterial->GetRadlen()/facgeom);
 
  //compute geomlimit and force few steps within a volume
  if (steppingAlgorithm == fUseDistanceToBoundary 
      && stepStatus == fGeomBoundary) {
 
    G4double geomlimit = ComputeGeomLimit(track, presafety, currentRange);
    tlimit = std::min(tlimit, geomlimit/facgeom);
  } 
  /*         
  G4cout << particle->GetParticleName() << " e= " << preKinEnergy
         << " L0= " << lambdaeff << " R= " << currentRange
         << " tlimit= " << tlimit  
           << " currentMinimalStep= " << currentMinimalStep << G4endl;
  */
  return ConvertTrueToGeom(tlimit, currentMinimalStep);
}

◆ ComputeTrueStepLength()

G4double G4WentzelVIModel::ComputeTrueStepLength ( G4double geomStepLength )

overridevirtual

Implements G4VMscModel.

Definition at line 397 of file G4WentzelVIModel.cc.

{
  // initialisation of single scattering x-section
  /*
  G4cout << "ComputeTrueStepLength: Step= " << geomStepLength 
         << "  geomL= " << zPathLength
         << "  Lambda= " <<  lambdaeff 
           << " 1-cosThetaMaxNuc= " << 1 - cosTetMaxNuc << G4endl;
  */
  if(singleScatteringMode) {
    zPathLength = tPathLength = geomStepLength;
 
  } else {
 
    // step defined by transportation
    // change both geom and true step lengths 
    if(geomStepLength < zPathLength) { 
 
      // single scattering
      if(G4int(geomStepLength*xtsec) < minNCollisions) {
        zPathLength = tPathLength = geomStepLength;
        lambdaeff = DBL_MAX;
        singleScatteringMode = true;
 
        // multiple scattering
      } else {
        // small step
        if(geomStepLength < numlimit*lambdaeff) {
          G4double tau = geomStepLength/lambdaeff;
          tPathLength = geomStepLength*(1.0 + 0.5*tau + tau*tau/3.0); 
 
          // energy correction for a big step
        } else {
          tPathLength *= geomStepLength/zPathLength;
          G4double e1 = 0.0;
          if(currentRange > tPathLength) {
            e1 = GetEnergy(particle,currentRange-tPathLength,currentCouple);
          }
          effKinEnergy = 0.5*(e1 + preKinEnergy);
          cosTetMaxNuc = wokvi->SetupKinematic(effKinEnergy, currentMaterial);
          lambdaeff = GetTransportMeanFreePath(particle, effKinEnergy);
          G4double tau = geomStepLength/lambdaeff;
 
          if(tau < 0.999999) { tPathLength = -lambdaeff*G4Log(1.0 - tau); } 
          else               { tPathLength = currentRange; }
        }
        zPathLength = geomStepLength;
      }
    }
  }
  // check of step length
  // define threshold angle between single and multiple scattering 
  if(!singleScatteringMode) {
    cosThetaMin -= ssFactor*tPathLength/lambdaeff; 
    xtsec = 0.0;
 
    // recompute transport cross section - do not change energy
    // anymore - cannot be applied for big steps
    if(cosThetaMin > cosTetMaxNuc) {
      // new computation
      G4double cross = ComputeTransportXSectionPerVolume(cosThetaMin);
      //G4cout << "%%%% cross= " << cross << "  xtsec= " << xtsec 
      //           << " 1-cosTMin= " << 1.0 - cosThetaMin << G4endl;
      if(cross <= 0.0) {
        singleScatteringMode = true;
        tPathLength = zPathLength; 
        lambdaeff = DBL_MAX;
        cosThetaMin = 1.0;
      } else if(xtsec > 0.0) {
        
        lambdaeff = 1./cross; 
        G4double tau = zPathLength*cross;
        if(tau < numlimit) { 
          tPathLength = zPathLength*(1.0 + 0.5*tau + tau*tau/3.0); 
        } else if(tau < 0.999999) { 
          tPathLength = -lambdaeff*G4Log(1.0 - tau); 
        } else { 
          tPathLength = currentRange;
        }
      }
    } 
  }
  tPathLength = std::min(tPathLength, currentRange);
  /*      
  G4cout <<"Comp.true: zLength= "<<zPathLength<<" tLength= "<<tPathLength
         <<" Leff(mm)= "<<lambdaeff/mm<<" sig0(1/mm)= " << xtsec <<G4endl;
  G4cout << particle->GetParticleName() << " 1-cosThetaMin= " << 1-cosThetaMin
         << " 1-cosTetMaxNuc= " << 1-cosTetMaxNuc 
         << " e(MeV)= " << preKinEnergy/MeV << "  "  
         << " SSmode= " << singleScatteringMode << G4endl;
  */
  return tPathLength;
}

◆ DefineMaterial()

void G4WentzelVIModel::DefineMaterial ( const G4MaterialCutsCouple * cup )

Definition at line 199 of file G4WentzelVIModel.cc.

{ 
  if(cup != currentCouple) {
    currentCouple = cup;
    SetCurrentCouple(cup); 
    currentMaterial = cup->GetMaterial();
    currentMaterialIndex = currentCouple->GetIndex(); 
  }
}

Referenced by ComputeCrossSectionPerAtom(), G4LowEWentzelVIModel::ComputeTruePathLengthLimit(), ComputeTruePathLengthLimit(), Initialise(), and SecondMoment().

◆ GetFixedCut()

G4double G4WentzelVIModel::GetFixedCut ( ) const

inline

Definition at line 208 of file G4WentzelVIModel.hh.

{
  return fixedCut;
}

◆ GetSecondMomentTable()

G4PhysicsTable * G4WentzelVIModel::GetSecondMomentTable ( )

inline

Definition at line 246 of file G4WentzelVIModel.hh.

{
  return fSecondMoments;
}

Referenced by InitialiseLocal().

◆ GetWVICrossSection()

G4WentzelOKandVIxSection * G4WentzelVIModel::GetWVICrossSection ( )

inline

Definition at line 225 of file G4WentzelVIModel.hh.

{
  return wokvi;
}

Referenced by G4WentzelVIRelModel::DefineMaterial().

◆ Initialise()

void G4WentzelVIModel::Initialise	(	const G4ParticleDefinition *	p,
		const G4DataVector &	cuts )

overridevirtual

Implements G4VEmModel.

Reimplemented in G4WentzelVIRelModel.

Definition at line 102 of file G4WentzelVIModel.cc.

{
  // reset parameters
  SetupParticle(p);
  InitialiseParameters(p);
  currentRange = 0.0;
 
  if(isCombined) {
    G4double tet = PolarAngleLimit();
    if(tet <= 0.0)           { cosThetaMax = 1.0; }
    else if(tet < CLHEP::pi) { cosThetaMax = cos(tet); }
  }
  //G4cout << "G4WentzelVIModel::Initialise " << p->GetParticleName() 
  //     << " " << this << " " << wokvi << G4endl;
 
  wokvi->Initialise(p, cosThetaMax);
  /* 
  G4cout << "G4WentzelVIModel: " << particle->GetParticleName()
         << "  1-cos(ThetaLimit)= " << 1 - cosThetaMax 
         << " SingScatFactor= " << ssFactor
         << G4endl;
  */
  currentCuts = &cuts;
 
  // set values of some data members
  fParticleChange = GetParticleChangeForMSC(p);
 
  // Access to materials
  const G4ProductionCutsTable* theCoupleTable =
    G4ProductionCutsTable::GetProductionCutsTable();
  G4int numOfCouples = (G4int)theCoupleTable->GetTableSize();
  nelments = 0;
  for(G4int i=0; i<numOfCouples; ++i) {
    G4int nelm = (G4int)theCoupleTable->GetMaterialCutsCouple(i)->GetMaterial()->GetNumberOfElements();
    nelments = std::max(nelments, nelm);
  }
  xsecn.resize(nelments);
  prob.resize(nelments);
 
  // build second moment table only if transport table is build
  G4PhysicsTable* table = GetCrossSectionTable();
  if(useSecondMoment && IsMaster() && nullptr != table) {
 
    //G4cout << "### G4WentzelVIModel::Initialise: build 2nd moment table "
    //           << table << G4endl;
    fSecondMoments =  
      G4PhysicsTableHelper::PreparePhysicsTable(fSecondMoments);
 
    G4bool splineFlag = true;
    G4PhysicsVector* aVector = nullptr;
    G4PhysicsVector* bVector = nullptr;
    G4double emin = std::max(LowEnergyLimit(), LowEnergyActivationLimit());
    G4double emax = std::min(HighEnergyLimit(), HighEnergyActivationLimit());
    if(emin < emax) {
      std::size_t n = G4EmParameters::Instance()->NumberOfBinsPerDecade()
        *G4lrint(std::log10(emax/emin));
      if(n < 3) { n = 3; }
 
      for(G4int i=0; i<numOfCouples; ++i) {
 
        //G4cout<< "i= " << i << " Flag=  " << fSecondMoments->GetFlag(i) 
        //      << G4endl;
        if(fSecondMoments->GetFlag(i)) {
          DefineMaterial(theCoupleTable->GetMaterialCutsCouple(i));
       
          delete (*fSecondMoments)[i];
          if(nullptr == aVector) { 
            aVector = new G4PhysicsLogVector(emin, emax, n, splineFlag);
            bVector = aVector;
          } else {
            bVector = new G4PhysicsVector(*aVector);
          }
          for(std::size_t j=0; j<n; ++j) {
            G4double e = bVector->Energy(j); 
            bVector->PutValue(j, ComputeSecondMoment(p, e)*e*e);
          }
          if(splineFlag) { bVector->FillSecondDerivatives(); }
          (*fSecondMoments)[i] = bVector;  
        }
      }
    } 
    //G4cout << *fSecondMoments << G4endl;
  }
}

Referenced by G4WentzelVIRelModel::Initialise().

◆ InitialiseLocal()

void G4WentzelVIModel::InitialiseLocal	(	const G4ParticleDefinition *	,
		G4VEmModel *	masterModel )

overridevirtual

Reimplemented from G4VEmModel.

Definition at line 190 of file G4WentzelVIModel.cc.

{
  fSecondMoments = static_cast<G4WentzelVIModel*>(masterModel)
    ->GetSecondMomentTable(); 
}

◆ operator=()

G4WentzelVIModel & G4WentzelVIModel::operator= ( const G4WentzelVIModel & right )

delete

◆ SampleScattering()

G4ThreeVector & G4WentzelVIModel::SampleScattering	(	const G4ThreeVector &	oldDirection,
		G4double	safety )

overridevirtual

Implements G4VMscModel.

Definition at line 494 of file G4WentzelVIModel.cc.

{
  fDisplacement.set(0.0,0.0,0.0);
  //G4cout << "!##! G4WentzelVIModel::SampleScattering for " 
  //         << particle->GetParticleName() << G4endl;
 
  // ignore scattering for zero step length and energy below the limit
  if(preKinEnergy < lowEnergyLimit || tPathLength <= 0.0) 
    { return fDisplacement; }
  
  G4double invlambda = 0.0;
  if(lambdaeff < DBL_MAX) { invlambda = 0.5/lambdaeff; }
 
  // use average kinetic energy over the step
  G4double cut = (*currentCuts)[currentMaterialIndex];
  if(fixedCut > 0.0) { cut = fixedCut; }
  /*  
  G4cout <<"SampleScat: E0(MeV)= "<< preKinEnergy/MeV
           << " Leff= " << lambdaeff <<" sig0(1/mm)= " << xtsec 
          << " xmsc= " <<  tPathLength*invlambda 
         << " safety= " << safety << G4endl;
  */
  // step limit due msc
  G4int nMscSteps = 1;
  G4double x0 = tPathLength;
  G4double z0 = x0*invlambda;
  //G4double zzz = 0.0;
  G4double prob2 = 0.0;
 
  CLHEP::HepRandomEngine* rndmEngine = G4Random::getTheEngine();
 
  // large scattering angle case - two step approach
  if(!singleScatteringMode) {
    static const G4double zzmin = 0.05;
    if(useSecondMoment) { 
      G4double z1 = invlambda*invlambda;
      G4double z2 = SecondMoment(particle, currentCouple, effKinEnergy);
      prob2 = (z2 - z1)/(1.5*z1 - z2);
    }
    //    if(z0 > zzmin && safety > tlimitminfix) { 
    if(z0 > zzmin) { 
      x0 *= 0.5; 
      z0 *= 0.5;
      nMscSteps = 2;
    } 
    //if(z0 > zzmin) { zzz = G4Exp(-1.0/z0); }
    G4double zzz = 0.0;
    if(z0 > zzmin) { 
      zzz = G4Exp(-1.0/z0); 
      z0 += zzz; 
      prob2 *= (1 + zzz);
    }
    prob2 /= (1 + prob2);
  } 
 
  // step limit due to single scattering
  G4double x1 = 2*tPathLength;
  if(0.0 < xtsec) { x1 = -G4Log(rndmEngine->flat())/xtsec; }
 
  // no scattering case
  if(singleScatteringMode && x1 > tPathLength)  
    { return fDisplacement; }
 
  const G4ElementVector* theElementVector = 
    currentMaterial->GetElementVector();
  std::size_t nelm = currentMaterial->GetNumberOfElements();
 
  // geometry
  G4double sint, cost, phi;
  G4ThreeVector temp(0.0,0.0,1.0);
 
  // current position and direction relative to the end point
  // because of magnetic field geometry is computed relatively to the 
  // end point of the step 
  G4ThreeVector dir(0.0,0.0,1.0);
  fDisplacement.set(0.0,0.0,-zPathLength);
 
  G4double mscfac = zPathLength/tPathLength;
 
  // start a loop 
  G4double x2 = x0;
  G4double step, z;
  G4bool singleScat;
  /*   
    G4cout << "Start of the loop x1(mm)= " << x1 << "  x2(mm)= " << x2 
    << " 1-cost1= " << 1 - cosThetaMin << " SSmode= " << singleScatteringMode 
           << " xtsec= " << xtsec << " Nst= "  << nMscSteps << G4endl;
  */
  do {
 
    //G4cout << "# x1(mm)= "<< x1<< " x2(mm)= "<< x2 << G4endl;
    // single scattering case
    if(singleScatteringMode && x1 > x2) { 
      fDisplacement += x2*mscfac*dir;
      break; 
    }
 
    // what is next single of multiple?
    if(x1 <= x2) { 
      step = x1;
      singleScat = true;
    } else {
      step = x2;
      singleScat = false;
    }
 
    //G4cout << "# step(mm)= "<< step<< "  singlScat= "<< singleScat << G4endl;
 
    // new position
    fDisplacement += step*mscfac*dir;
 
    if(singleScat) {
 
      // select element
      std::size_t i = 0;
      if(nelm > 1) {
        G4double qsec = rndmEngine->flat()*xtsec;
        for (; i<nelm; ++i) { if(xsecn[i] >= qsec) { break; } }
      }
      G4double cosTetM = 
        wokvi->SetupTarget((*theElementVector)[i]->GetZasInt(), cut);
      //G4cout << "!!! " << cosThetaMin << "  " << cosTetM << "  " 
      //     << prob[i] << G4endl;
      temp = wokvi->SampleSingleScattering(cosThetaMin, cosTetM, prob[i]);
 
      // direction is changed
      temp.rotateUz(dir);
      dir = temp;
      //G4cout << dir << G4endl;
 
      // new proposed step length
      x2 -= step; 
      x1  = -G4Log(rndmEngine->flat())/xtsec; 
 
    // multiple scattering
    } else { 
      --nMscSteps;
      x1 -= step;
      x2  = x0;
 
      // sample z in interval 0 - 1
      G4bool isFirst = true;
      if(prob2 > 0.0 && rndmEngine->flat() < prob2) { isFirst = false; } 
      do {
        //z = -z0*G4Log(1.0 - (1.0 - zzz)*rndmEngine->flat());
        if(isFirst) { z = -G4Log(rndmEngine->flat()); }
        else        { z = G4RandGamma::shoot(rndmEngine, 2.0, 2.0); }
        z *= z0;
        // Loop checking, 03-Aug-2015, Vladimir Ivanchenko
      } while(z > 1.0);
 
      cost = 1.0 - 2.0*z/*factCM*/;
      if(cost > 1.0)       { cost = 1.0; }
      else if(cost < -1.0) { cost =-1.0; }
      sint = sqrt((1.0 - cost)*(1.0 + cost));
      phi  = twopi*rndmEngine->flat();
      G4double vx1 = sint*cos(phi);
      G4double vy1 = sint*sin(phi);
 
      // lateral displacement  
      if (latDisplasment) {
        G4double rms = invsqrt12*sqrt(2*z0);
        G4double r  = x0*mscfac;
        G4double dx = r*(0.5*vx1 + rms*G4RandGauss::shoot(rndmEngine,0.0,1.0));
        G4double dy = r*(0.5*vy1 + rms*G4RandGauss::shoot(rndmEngine,0.0,1.0));
        G4double d  = r*r - dx*dx - dy*dy;
 
        // change position
        if(d >= 0.0)  { 
          temp.set(dx,dy,sqrt(d) - r);
          temp.rotateUz(dir); 
          fDisplacement += temp;
        }
      }
      // change direction
      temp.set(vx1,vy1,cost);
      temp.rotateUz(dir);
      dir = temp;
    }
    // Loop checking, 03-Aug-2015, Vladimir Ivanchenko
  } while (0 < nMscSteps);
    
  dir.rotateUz(oldDirection);
 
  //G4cout<<"G4WentzelVIModel sampling is done 1-cost= "<< 1.-dir.z()<<G4endl;
  // end of sampling -------------------------------
 
  fParticleChange->ProposeMomentumDirection(dir);
 
  // lateral displacement  
  fDisplacement.rotateUz(oldDirection);
 
  /*
         G4cout << " r(mm)= " << fDisplacement.mag() 
                << " safety= " << safety
                << " trueStep(mm)= " << tPathLength
                << " geomStep(mm)= " << zPathLength
                << " x= " << fDisplacement.x() 
                << " y= " << fDisplacement.y() 
                << " z= " << fDisplacement.z()
                << G4endl;
  */
 
  //G4cout<< "G4WentzelVIModel::SampleScattering end NewDir= " << dir<< G4endl;
  return fDisplacement;
}

◆ SecondMoment()

G4double G4WentzelVIModel::SecondMoment	(	const G4ParticleDefinition *	part,
		const G4MaterialCutsCouple *	couple,
		G4double	kineticEnergy )

inline

Definition at line 254 of file G4WentzelVIModel.hh.

{
  G4double x = 0.0;
  if(useSecondMoment) { 
    DefineMaterial(couple);
    x = (fSecondMoments) ?  
      (*fSecondMoments)[(*theDensityIdx)[currentMaterialIndex]]->Value(ekin, idx2)
      *(*theDensityFactor)[currentMaterialIndex]/(ekin*ekin)
      : ComputeSecondMoment(part, ekin);
  }
  return x;
}

Referenced by SampleScattering().

◆ SetFixedCut()

void G4WentzelVIModel::SetFixedCut ( G4double val )

inline

Definition at line 201 of file G4WentzelVIModel.hh.

{
  fixedCut = val;
}

◆ SetSingleScatteringFactor()

void G4WentzelVIModel::SetSingleScatteringFactor ( G4double val )

Definition at line 789 of file G4WentzelVIModel.cc.

{
  if(val > 0.05) {
    ssFactor = val;
    invssFactor = 1.0/(val - 0.05);
  }
}

Referenced by G4LowEWentzelVIModel::G4LowEWentzelVIModel(), and G4WentzelVIModel().

◆ SetupParticle()

void G4WentzelVIModel::SetupParticle ( const G4ParticleDefinition * p )

inlineprotected

Definition at line 190 of file G4WentzelVIModel.hh.

{
  // Initialise mass and charge
  if(p != particle) {
    particle = p;
    wokvi->SetupParticle(p);
  }
}

Referenced by ComputeCrossSectionPerAtom(), G4WentzelVIRelModel::ComputeCrossSectionPerAtom(), Initialise(), and StartTracking().

◆ SetUseSecondMoment()

void G4WentzelVIModel::SetUseSecondMoment ( G4bool val )

inline

Definition at line 232 of file G4WentzelVIModel.hh.

{
  useSecondMoment = val;
}

◆ SetWVICrossSection()

void G4WentzelVIModel::SetWVICrossSection ( G4WentzelOKandVIxSection * ptr )

inline

Definition at line 215 of file G4WentzelVIModel.hh.

{
  if(ptr != wokvi) {
    delete wokvi;
    wokvi = ptr;
  }
}

Referenced by G4WentzelVIRelModel::G4WentzelVIRelModel().

◆ StartTracking()

void G4WentzelVIModel::StartTracking ( G4Track * track )

overridevirtual

Reimplemented from G4VEmModel.

Definition at line 243 of file G4WentzelVIModel.cc.

{
  /*
  G4cout << "G4WentzelVIModel::StartTracking " << track << "  " << this << "  "
     << track->GetParticleDefinition()->GetParticleName() 
     << "   workvi: " << wokvi << G4endl; 
  */
  SetupParticle(track->GetParticleDefinition());
}

◆ UseSecondMoment()

G4bool G4WentzelVIModel::UseSecondMoment ( ) const

inline

Definition at line 239 of file G4WentzelVIModel.hh.

{
  return useSecondMoment;
}

Member Data Documentation

◆ cosTetMaxNuc

G4double G4WentzelVIModel::cosTetMaxNuc = 0.0

protected

Definition at line 160 of file G4WentzelVIModel.hh.

Referenced by ComputeCrossSectionPerAtom(), G4WentzelVIRelModel::ComputeCrossSectionPerAtom(), ComputeGeomPathLength(), ComputeTransportXSectionPerVolume(), G4LowEWentzelVIModel::ComputeTruePathLengthLimit(), ComputeTruePathLengthLimit(), and ComputeTrueStepLength().

◆ cosThetaMax

G4double G4WentzelVIModel::cosThetaMax = -1.0

protected

Definition at line 169 of file G4WentzelVIModel.hh.

Referenced by ComputeTruePathLengthLimit(), and Initialise().

◆ cosThetaMin

G4double G4WentzelVIModel::cosThetaMin = 1.0

protected

Definition at line 168 of file G4WentzelVIModel.hh.

Referenced by ComputeGeomPathLength(), ComputeTrueStepLength(), and SampleScattering().

◆ currentCouple

const G4MaterialCutsCouple* G4WentzelVIModel::currentCouple = nullptr

protected

Definition at line 141 of file G4WentzelVIModel.hh.

Referenced by ComputeGeomPathLength(), G4LowEWentzelVIModel::ComputeTruePathLengthLimit(), ComputeTruePathLengthLimit(), ComputeTrueStepLength(), DefineMaterial(), G4WentzelVIRelModel::DefineMaterial(), and SampleScattering().

◆ currentCuts

const G4DataVector* G4WentzelVIModel::currentCuts = nullptr

protected

Definition at line 146 of file G4WentzelVIModel.hh.

Referenced by Initialise().

◆ currentMaterial

const G4Material* G4WentzelVIModel::currentMaterial = nullptr

protected

Definition at line 142 of file G4WentzelVIModel.hh.

Referenced by ComputeCrossSectionPerAtom(), G4WentzelVIRelModel::ComputeCrossSectionPerAtom(), ComputeGeomPathLength(), ComputeTransportXSectionPerVolume(), G4LowEWentzelVIModel::ComputeTruePathLengthLimit(), ComputeTruePathLengthLimit(), ComputeTrueStepLength(), DefineMaterial(), G4WentzelVIRelModel::DefineMaterial(), and SampleScattering().

◆ currentMaterialIndex

G4int G4WentzelVIModel::currentMaterialIndex = 0

protected

Definition at line 172 of file G4WentzelVIModel.hh.

Referenced by ComputeTransportXSectionPerVolume(), DefineMaterial(), G4WentzelVIRelModel::DefineMaterial(), SampleScattering(), and SecondMoment().

◆ currentRange

G4double G4WentzelVIModel::currentRange = 0.0

protected

Definition at line 159 of file G4WentzelVIModel.hh.

Referenced by ComputeGeomPathLength(), G4LowEWentzelVIModel::ComputeTruePathLengthLimit(), ComputeTruePathLengthLimit(), ComputeTrueStepLength(), and Initialise().

◆ effKinEnergy

G4double G4WentzelVIModel::effKinEnergy = 0.0

protected

Definition at line 165 of file G4WentzelVIModel.hh.

Referenced by ComputeGeomPathLength(), ComputeTruePathLengthLimit(), ComputeTrueStepLength(), and SampleScattering().

◆ fixedCut

G4double G4WentzelVIModel::fixedCut = -1.0

protected

Definition at line 162 of file G4WentzelVIModel.hh.

Referenced by ComputeCrossSectionPerAtom(), ComputeTransportXSectionPerVolume(), GetFixedCut(), SampleScattering(), and SetFixedCut().

◆ fParticleChange

G4ParticleChangeForMSC* G4WentzelVIModel::fParticleChange = nullptr

protected

Definition at line 145 of file G4WentzelVIModel.hh.

Referenced by Initialise(), and SampleScattering().

◆ fSecondMoments

G4PhysicsTable* G4WentzelVIModel::fSecondMoments = nullptr

protected

Definition at line 147 of file G4WentzelVIModel.hh.

Referenced by GetSecondMomentTable(), Initialise(), InitialiseLocal(), SecondMoment(), and ~G4WentzelVIModel().

◆ idx2

size_t G4WentzelVIModel::idx2 = 0

protected

Definition at line 173 of file G4WentzelVIModel.hh.

Referenced by SecondMoment().

◆ invssFactor

G4double G4WentzelVIModel::invssFactor = 1.0

protected

Definition at line 152 of file G4WentzelVIModel.hh.

Referenced by ComputeTruePathLengthLimit(), and SetSingleScatteringFactor().

◆ isCombined

G4bool G4WentzelVIModel::isCombined

protected

Definition at line 180 of file G4WentzelVIModel.hh.

Referenced by G4WentzelVIModel(), and Initialise().

◆ lambdaeff

G4double G4WentzelVIModel::lambdaeff = 0.0

protected

Definition at line 158 of file G4WentzelVIModel.hh.

Referenced by ComputeGeomPathLength(), G4LowEWentzelVIModel::ComputeTruePathLengthLimit(), ComputeTruePathLengthLimit(), ComputeTrueStepLength(), and SampleScattering().

◆ lowEnergyLimit

G4double G4WentzelVIModel::lowEnergyLimit

protected

Definition at line 149 of file G4WentzelVIModel.hh.

Referenced by ComputeCrossSectionPerAtom(), G4WentzelVIRelModel::ComputeCrossSectionPerAtom(), G4WentzelVIModel(), and SampleScattering().

◆ nelments

G4int G4WentzelVIModel::nelments = 0

protected

Definition at line 176 of file G4WentzelVIModel.hh.

Referenced by ComputeTransportXSectionPerVolume(), and Initialise().

◆ particle

const G4ParticleDefinition* G4WentzelVIModel::particle = nullptr

protected

Definition at line 144 of file G4WentzelVIModel.hh.

Referenced by G4WentzelVIRelModel::ComputeCrossSectionPerAtom(), ComputeGeomPathLength(), G4LowEWentzelVIModel::ComputeTruePathLengthLimit(), ComputeTruePathLengthLimit(), ComputeTrueStepLength(), SampleScattering(), and SetupParticle().

◆ preKinEnergy

G4double G4WentzelVIModel::preKinEnergy = 0.0

protected

Definition at line 155 of file G4WentzelVIModel.hh.

Referenced by ComputeGeomPathLength(), G4LowEWentzelVIModel::ComputeTruePathLengthLimit(), ComputeTruePathLengthLimit(), ComputeTrueStepLength(), and SampleScattering().

◆ prob

std::vector<G4double> G4WentzelVIModel::prob

protected

Definition at line 184 of file G4WentzelVIModel.hh.

Referenced by ComputeTransportXSectionPerVolume(), Initialise(), and SampleScattering().

◆ singleScatteringMode

G4bool G4WentzelVIModel::singleScatteringMode

protected

Definition at line 179 of file G4WentzelVIModel.hh.

Referenced by ComputeGeomPathLength(), G4LowEWentzelVIModel::ComputeTruePathLengthLimit(), ComputeTruePathLengthLimit(), ComputeTrueStepLength(), and SampleScattering().

◆ ssFactor

G4double G4WentzelVIModel::ssFactor = 1.05

protected

Definition at line 151 of file G4WentzelVIModel.hh.

Referenced by ComputeTrueStepLength(), and SetSingleScatteringFactor().

◆ tlimitminfix

G4double G4WentzelVIModel::tlimitminfix

protected

Definition at line 150 of file G4WentzelVIModel.hh.

Referenced by G4LowEWentzelVIModel::ComputeTruePathLengthLimit(), ComputeTruePathLengthLimit(), and G4WentzelVIModel().

◆ tPathLength

G4double G4WentzelVIModel::tPathLength = 0.0

protected

Definition at line 156 of file G4WentzelVIModel.hh.

Referenced by ComputeGeomPathLength(), ComputeTrueStepLength(), and SampleScattering().

◆ useSecondMoment

G4bool G4WentzelVIModel::useSecondMoment

protected

Definition at line 181 of file G4WentzelVIModel.hh.

Referenced by Initialise(), SampleScattering(), SecondMoment(), SetUseSecondMoment(), and UseSecondMoment().

◆ wokvi

G4WentzelOKandVIxSection* G4WentzelVIModel::wokvi

protected

Definition at line 140 of file G4WentzelVIModel.hh.

Referenced by ComputeCrossSectionPerAtom(), G4WentzelVIRelModel::ComputeCrossSectionPerAtom(), ComputeGeomPathLength(), ComputeTransportXSectionPerVolume(), G4LowEWentzelVIModel::ComputeTruePathLengthLimit(), ComputeTruePathLengthLimit(), ComputeTrueStepLength(), G4WentzelVIModel(), GetWVICrossSection(), Initialise(), SampleScattering(), SetupParticle(), SetWVICrossSection(), and ~G4WentzelVIModel().

◆ xsecn

std::vector<G4double> G4WentzelVIModel::xsecn

protected

Definition at line 183 of file G4WentzelVIModel.hh.

Referenced by ComputeTransportXSectionPerVolume(), Initialise(), and SampleScattering().

◆ xtsec

G4double G4WentzelVIModel::xtsec = 0.0

protected

Definition at line 170 of file G4WentzelVIModel.hh.

Referenced by ComputeGeomPathLength(), ComputeTransportXSectionPerVolume(), ComputeTrueStepLength(), and SampleScattering().

◆ zPathLength

G4double G4WentzelVIModel::zPathLength = 0.0

protected

Definition at line 157 of file G4WentzelVIModel.hh.

Referenced by ComputeGeomPathLength(), ComputeTrueStepLength(), and SampleScattering().

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

Public Member Functions

Protected Member Functions

Protected Attributes

Detailed Description

Constructor & Destructor Documentation

◆ G4WentzelVIModel() [1/2]

◆ ~G4WentzelVIModel()

◆ G4WentzelVIModel() [2/2]

Member Function Documentation

◆ ComputeCrossSectionPerAtom()

◆ ComputeGeomPathLength()

◆ ComputeTransportXSectionPerVolume()

◆ ComputeTruePathLengthLimit()

◆ ComputeTrueStepLength()

◆ DefineMaterial()

◆ GetFixedCut()

◆ GetSecondMomentTable()

◆ GetWVICrossSection()

◆ Initialise()

◆ InitialiseLocal()

◆ operator=()

◆ SampleScattering()

◆ SecondMoment()

◆ SetFixedCut()

◆ SetSingleScatteringFactor()

◆ SetupParticle()

◆ SetUseSecondMoment()

◆ SetWVICrossSection()

◆ StartTracking()

◆ UseSecondMoment()

Member Data Documentation

◆ cosTetMaxNuc

◆ cosThetaMax

◆ cosThetaMin

◆ currentCouple

◆ currentCuts

◆ currentMaterial

◆ currentMaterialIndex

◆ currentRange

◆ effKinEnergy

◆ fixedCut

◆ fParticleChange

◆ fSecondMoments

◆ idx2

◆ invssFactor

◆ isCombined

◆ lambdaeff

◆ lowEnergyLimit

◆ nelments

◆ particle

◆ preKinEnergy

◆ prob

◆ singleScatteringMode

◆ ssFactor

◆ tlimitminfix

◆ tPathLength

◆ useSecondMoment

◆ wokvi

◆ xsecn

◆ xtsec

◆ zPathLength