#include <G4mplIonisationModel.hh>

Inheritance diagram for G4mplIonisationModel:

Public Member Functions
	G4mplIonisationModel (G4double mCharge, const G4String &nam="mplIonisation")

virtual	~G4mplIonisationModel ()

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

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

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

virtual G4double	SampleFluctuations (const G4MaterialCutsCouple , const G4DynamicParticle , G4double tmax, G4double length, G4double meanLoss) override

virtual G4double	Dispersion (const G4Material , const G4DynamicParticle , G4double tmax, G4double length) override

void	SetParticle (const G4ParticleDefinition *p)

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

virtual	~G4VEmModel ()

virtual void	Initialise (const G4ParticleDefinition *, const G4DataVector &)=0

virtual void	SampleSecondaries (std::vector< G4DynamicParticle * > , const G4MaterialCutsCouple , const G4DynamicParticle *, G4double tmin=0.0, G4double tmax=DBL_MAX)=0

virtual void	InitialiseLocal (const G4ParticleDefinition , G4VEmModel masterModel)

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	ComputeCrossSectionPerAtom (const G4ParticleDefinition *, G4double kinEnergy, G4double Z, G4double A=0., G4double cutEnergy=0.0, G4double maxEnergy=DBL_MAX)

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 G4double	MinEnergyCut (const G4ParticleDefinition , const G4MaterialCutsCouple )

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

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)

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)

G4int	SelectRandomAtomNumber (const G4Material *)

G4int	SelectIsotopeNumber (const G4Element *)

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	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) const

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

void	SetUseBaseMaterials (G4bool val)

G4bool	UseBaseMaterials () 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)

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

	G4VEmModel (const G4VEmModel &)=delete

Public Member Functions inherited from G4VEmFluctuationModel
	G4VEmFluctuationModel (const G4String &nam)

virtual	~G4VEmFluctuationModel ()

virtual G4double	SampleFluctuations (const G4MaterialCutsCouple , const G4DynamicParticle , G4double tmax, G4double length, G4double meanLoss)=0

virtual G4double	Dispersion (const G4Material , const G4DynamicParticle , G4double tmax, G4double length)=0

virtual void	InitialiseMe (const G4ParticleDefinition *)

virtual void	SetParticleAndCharge (const G4ParticleDefinition *, G4double q2)

const G4String &	GetName () const

G4VEmFluctuationModel &	operator= (const G4VEmFluctuationModel &right)=delete

	G4VEmFluctuationModel (const G4VEmFluctuationModel &)=delete

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 *)

Protected Attributes inherited from G4VEmModel
G4ElementData *	fElementData

G4VParticleChange *	pParticleChange

G4PhysicsTable *	xSectionTable

const G4Material *	pBaseMaterial

const std::vector< G4double > *	theDensityFactor

const std::vector< G4int > *	theDensityIdx

size_t	idxTable

G4bool	lossFlucFlag

G4double	inveplus

G4double	pFactor

Detailed Description

Definition at line 57 of file G4mplIonisationModel.hh.

Constructor & Destructor Documentation

◆ G4mplIonisationModel()

G4mplIonisationModel::G4mplIonisationModel	(	G4double	mCharge,
		const G4String &	nam = `"mplIonisation"`
	)

explicit

Definition at line 71 of file G4mplIonisationModel.cc.

  : G4VEmModel(nam),G4VEmFluctuationModel(nam),
  magCharge(mCharge),
  twoln10(log(100.0)),
  betalow(0.01),
  betalim(0.1),
  beta2lim(betalim*betalim),
  bg2lim(beta2lim*(1.0 + beta2lim))
{
  nmpl         = G4int(abs(magCharge) * 2 * fine_structure_const + 0.5);
  if(nmpl > 6)      { nmpl = 6; }
  else if(nmpl < 1) { nmpl = 1; }
  pi_hbarc2_over_mc2 = pi * hbarc * hbarc / electron_mass_c2;
  chargeSquare = magCharge * magCharge;
  dedxlim = 45.*nmpl*nmpl*GeV*cm2/g;
  fParticleChange = nullptr;
  monopole = nullptr;
  mass = 0.0;
}

◆ ~G4mplIonisationModel()

G4mplIonisationModel::~G4mplIonisationModel ( )

virtual

Definition at line 93 of file G4mplIonisationModel.cc.

{
  if(IsMaster()) { delete dedx0; }
}

Member Function Documentation

◆ ComputeDEDXPerVolume()

G4double G4mplIonisationModel::ComputeDEDXPerVolume	(	const G4Material *	material,
		const G4ParticleDefinition *	p,
		G4double	kineticEnergy,
		G4double	cutEnergy
	)

overridevirtual

Reimplemented from G4VEmModel.

Definition at line 144 of file G4mplIonisationModel.cc.

{
  if(!monopole) { SetParticle(p); }
  G4double tau   = kineticEnergy / mass;
  G4double gam   = tau + 1.0;
  G4double bg2   = tau * (tau + 2.0);
  G4double beta2 = bg2 / (gam * gam);
  G4double beta  = sqrt(beta2);
 
  // low-energy asymptotic formula
  //G4double dedx  = dedxlim*beta*material->GetDensity();
  G4double dedx = (*dedx0)[CurrentCouple()->GetIndex()]*beta;
 
  // above asymptotic
  if(beta > betalow) {
 
    // high energy
    if(beta >= betalim) {
      dedx = ComputeDEDXAhlen(material, bg2);
 
    } else {
 
      //G4double dedx1 = dedxlim*betalow*material->GetDensity();
      G4double dedx1 = (*dedx0)[CurrentCouple()->GetIndex()]*betalow;
      G4double dedx2 = ComputeDEDXAhlen(material, bg2lim);
 
      // extrapolation between two formula 
      G4double kapa2 = beta - betalow;
      G4double kapa1 = betalim - beta;
      dedx = (kapa1*dedx1 + kapa2*dedx2)/(kapa1 + kapa2);
    }
  }
  return dedx;
}

◆ Dispersion()

G4double G4mplIonisationModel::Dispersion	(	const G4Material *	material,
		const G4DynamicParticle *	dp,
		G4double	tmax,
		G4double	length
	)

overridevirtual

Implements G4VEmFluctuationModel.

Definition at line 264 of file G4mplIonisationModel.cc.

{
  G4double siga = 0.0;
  G4double tau   = dp->GetKineticEnergy()/mass;
  if(tau > 0.0) { 
    G4double electronDensity = material->GetElectronDensity();
    G4double gam   = tau + 1.0;
    G4double invbeta2 = (gam*gam)/(tau * (tau+2.0));
    siga  = (invbeta2 - 0.5) * twopi_mc2_rcl2 * tmax * length
      * electronDensity * chargeSquare;
  }
  return siga;
}

Referenced by SampleFluctuations().

◆ Initialise()

void G4mplIonisationModel::Initialise	(	const G4ParticleDefinition *	p,
		const G4DataVector &
	)

overridevirtual

Implements G4VEmModel.

Definition at line 114 of file G4mplIonisationModel.cc.

{
  if(!monopole) { SetParticle(p); }
  if(!fParticleChange) { fParticleChange = GetParticleChangeForLoss(); }
  if(IsMaster()) {
    if(!dedx0) { dedx0 = new std::vector<G4double>; }
    G4ProductionCutsTable* theCoupleTable=
      G4ProductionCutsTable::GetProductionCutsTable();
    G4int numOfCouples = theCoupleTable->GetTableSize();
    G4int n = dedx0->size();
    if(n < numOfCouples) { dedx0->resize(numOfCouples); }
 
    G4Pow* g4calc = G4Pow::GetInstance();
 
    // initialise vector assuming low conductivity
    for(G4int i=0; i<numOfCouples; ++i) {
 
      const G4Material* material = 
        theCoupleTable->GetMaterialCutsCouple(i)->GetMaterial();
      G4double eDensity = material->GetElectronDensity();
      G4double vF2 = 2*electron_Compton_length*g4calc->A13(3.*pi*pi*eDensity);
      (*dedx0)[i] = pi_hbarc2_over_mc2*eDensity*nmpl*nmpl*
        (G4Log(vF2/fine_structure_const) - 0.5)/vF2;
    }
  }
}

◆ SampleFluctuations()

G4double G4mplIonisationModel::SampleFluctuations	(	const G4MaterialCutsCouple *	couple,
		const G4DynamicParticle *	dp,
		G4double	tmax,
		G4double	length,
		G4double	meanLoss
	)

overridevirtual

Implements G4VEmFluctuationModel.

Definition at line 234 of file G4mplIonisationModel.cc.

{
  G4double siga = Dispersion(couple->GetMaterial(),dp,tmax,length);
  G4double loss = meanLoss;
  siga = sqrt(siga);
  G4double twomeanLoss = meanLoss + meanLoss;
 
  if(twomeanLoss < siga) {
    G4double x;
    do {
      loss = twomeanLoss*G4UniformRand();
      x = (loss - meanLoss)/siga;
      // Loop checking, 07-Aug-2015, Vladimir Ivanchenko
    } while (1.0 - 0.5*x*x < G4UniformRand());
  } else {
    do {
      loss = G4RandGauss::shoot(meanLoss,siga);
      // Loop checking, 07-Aug-2015, Vladimir Ivanchenko
    } while (0.0 > loss || loss > twomeanLoss);
  }
  return loss;
}

◆ SampleSecondaries()

void G4mplIonisationModel::SampleSecondaries	(	std::vector< G4DynamicParticle * > *	,
		const G4MaterialCutsCouple *	,
		const G4DynamicParticle *	,
		G4double	tmin,
		G4double	maxEnergy
	)

overridevirtual

Implements G4VEmModel.

Definition at line 225 of file G4mplIonisationModel.cc.

230{}

◆ SetParticle()

void G4mplIonisationModel::SetParticle ( const G4ParticleDefinition * p )

Definition at line 100 of file G4mplIonisationModel.cc.

{
  monopole = p;
  mass     = monopole->GetPDGMass();
  G4double emin = 
    std::min(LowEnergyLimit(),0.1*mass*(1./sqrt(1. - betalow*betalow) - 1.)); 
  G4double emax = 
    std::max(HighEnergyLimit(),10.*mass*(1./sqrt(1. - beta2lim) - 1.)); 
  SetLowEnergyLimit(emin);
  SetHighEnergyLimit(emax);
}

Referenced by ComputeDEDXPerVolume(), and Initialise().

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

Public Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ G4mplIonisationModel()

◆ ~G4mplIonisationModel()

Member Function Documentation

◆ ComputeDEDXPerVolume()

◆ Dispersion()

◆ Initialise()

◆ SampleFluctuations()

◆ SampleSecondaries()

◆ SetParticle()