#include <G4CoulombScattering.hh>

Inheritance diagram for G4CoulombScattering:

Public Member Functions
	G4CoulombScattering (const G4String &name="CoulombScat")

virtual	~G4CoulombScattering ()

virtual G4bool	IsApplicable (const G4ParticleDefinition &p) final

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

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

virtual	~G4VEmProcess ()

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

virtual void	PrintInfo ()

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

virtual void	PreparePhysicsTable (const G4ParticleDefinition &) override

virtual void	BuildPhysicsTable (const G4ParticleDefinition &) override

virtual void	StartTracking (G4Track *) override

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

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

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

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

virtual G4VEmProcess *	GetEmProcess (const G4String &name)

G4double	CrossSectionPerVolume (G4double kineticEnergy, const G4MaterialCutsCouple *couple, G4double logKinEnergy=DBL_MAX)

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

G4double	MeanFreePath (const G4Track &track)

G4double	GetLambda (G4double kinEnergy, const G4MaterialCutsCouple *couple)

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

void	SetLambdaBinning (G4int nbins)

void	SetMinKinEnergy (G4double e)

void	SetMinKinEnergyPrim (G4double e)

void	SetMaxKinEnergy (G4double e)

G4PhysicsTable *	LambdaTable () const

G4PhysicsTable *	LambdaTablePrim () const

const G4ParticleDefinition *	Particle () const

const G4ParticleDefinition *	SecondaryParticle () const

G4VEmModel *	SelectModelForMaterial (G4double kinEnergy, size_t idxRegion) const

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

void	SetEmModel (G4VEmModel *, G4int index=0)

G4VEmModel *	EmModel (size_t index=0) const

void	UpdateEmModel (const G4String &, G4double, G4double)

G4int	GetNumberOfModels () const

G4int	GetNumberOfRegionModels (size_t couple_index) const

G4VEmModel *	GetRegionModel (G4int idx, size_t couple_index) const

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

const G4VEmModel *	GetCurrentModel () const

const G4Element *	GetCurrentElement () const

void	SetCrossSectionBiasingFactor (G4double f, G4bool flag=true)

G4double	CrossSectionBiasingFactor () const

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

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

void	SetEmMasterProcess (const G4VEmProcess *)

void	SetIntegral (G4bool val)

void	SetBuildTableFlag (G4bool val)

void	CurrentSetup (const G4MaterialCutsCouple *, G4double energy)

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

	G4VDiscreteProcess (G4VDiscreteProcess &)

virtual	~G4VDiscreteProcess ()

G4VDiscreteProcess &	operator= (const G4VDiscreteProcess &)=delete

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

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

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

virtual G4double	AtRestGetPhysicalInteractionLength (const G4Track &, G4ForceCondition *)

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

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

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

	G4VProcess (const G4VProcess &right)

virtual	~G4VProcess ()

G4VProcess &	operator= (const G4VProcess &)=delete

G4bool	operator== (const G4VProcess &right) const

G4bool	operator!= (const G4VProcess &right) const

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

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

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

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

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

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

G4double	GetCurrentInteractionLength () const

void	SetPILfactor (G4double value)

G4double	GetPILfactor () const

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

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

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

virtual G4bool	IsApplicable (const G4ParticleDefinition &)

virtual void	BuildPhysicsTable (const G4ParticleDefinition &)

virtual void	PreparePhysicsTable (const G4ParticleDefinition &)

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

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

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

const G4String &	GetProcessName () const

G4ProcessType	GetProcessType () const

void	SetProcessType (G4ProcessType)

G4int	GetProcessSubType () const

void	SetProcessSubType (G4int)

virtual void	StartTracking (G4Track *)

virtual void	EndTracking ()

virtual void	SetProcessManager (const G4ProcessManager *)

virtual const G4ProcessManager *	GetProcessManager ()

virtual void	ResetNumberOfInteractionLengthLeft ()

G4double	GetNumberOfInteractionLengthLeft () const

G4double	GetTotalNumberOfInteractionLengthTraversed () const

G4bool	isAtRestDoItIsEnabled () const

G4bool	isAlongStepDoItIsEnabled () const

G4bool	isPostStepDoItIsEnabled () const

virtual void	DumpInfo () const

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

void	SetVerboseLevel (G4int value)

G4int	GetVerboseLevel () const

virtual void	SetMasterProcess (G4VProcess *masterP)

const G4VProcess *	GetMasterProcess () const

virtual void	BuildWorkerPhysicsTable (const G4ParticleDefinition &part)

virtual void	PrepareWorkerPhysicsTable (const G4ParticleDefinition &)

Protected Member Functions
virtual void	StreamProcessInfo (std::ostream &outFile) const override

virtual void	InitialiseProcess (const G4ParticleDefinition *) override

virtual G4double	MinPrimaryEnergy (const G4ParticleDefinition , const G4Material ) final

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

virtual void	InitialiseProcess (const G4ParticleDefinition *)=0

virtual G4double	MinPrimaryEnergy (const G4ParticleDefinition , const G4Material )

G4VEmModel *	SelectModel (G4double kinEnergy, size_t index)

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

G4PhysicsVector *	LambdaPhysicsVector (const G4MaterialCutsCouple *)

void	DefineMaterial (const G4MaterialCutsCouple *couple)

G4int	LambdaBinning () const

G4double	MinKinEnergy () const

G4double	MaxKinEnergy () const

G4double	PolarAngleLimit () const

G4bool	IsIntegral () const

G4double	RecalculateLambda (G4double kinEnergy, const G4MaterialCutsCouple *couple)

G4ParticleChangeForGamma *	GetParticleChange ()

void	SetParticle (const G4ParticleDefinition *p)

void	SetSecondaryParticle (const G4ParticleDefinition *p)

size_t	CurrentMaterialCutsCoupleIndex () const

const G4MaterialCutsCouple *	MaterialCutsCouple () const

G4bool	ApplyCuts () const

G4double	GetGammaEnergyCut ()

G4double	GetElectronEnergyCut ()

void	SetStartFromNullFlag (G4bool val)

void	SetSplineFlag (G4bool val)

const G4Element *	GetTargetElement () const

const G4Isotope *	GetTargetIsotope () const

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

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

void	ClearNumberOfInteractionLengthLeft ()

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

Protected Attributes inherited from G4VEmProcess
G4LossTableManager *	lManager

G4EmParameters *	theParameters

G4EmBiasingManager *	biasManager

const G4ParticleDefinition *	theGamma

const G4ParticleDefinition *	theElectron

G4ParticleChangeForGamma	fParticleChange

std::vector< G4DynamicParticle * >	secParticles

const G4MaterialCutsCouple *	currentCouple

const G4Material *	currentMaterial

const std::vector< G4double > *	theDensityFactor

const std::vector< G4int > *	theDensityIdx

size_t	currentCoupleIndex

size_t	basedCoupleIndex

G4int	mainSecondaries

G4int	secID

G4int	fluoID

G4int	augerID

G4int	biasID

G4bool	isTheMaster

G4double	mfpKinEnergy

G4double	preStepKinEnergy

G4double	preStepLogKinEnergy

G4double	preStepLambda

Protected Attributes inherited from G4VProcess
const G4ProcessManager *	aProcessManager = nullptr

G4VParticleChange *	pParticleChange = nullptr

G4ParticleChange	aParticleChange

G4double	theNumberOfInteractionLengthLeft = -1.0

G4double	currentInteractionLength = -1.0

G4double	theInitialNumberOfInteractionLength = -1.0

G4String	theProcessName

G4String	thePhysicsTableFileName

G4ProcessType	theProcessType = fNotDefined

G4int	theProcessSubType = -1

G4double	thePILfactor = 1.0

G4int	verboseLevel = 0

G4bool	enableAtRestDoIt = true

G4bool	enableAlongStepDoIt = true

G4bool	enablePostStepDoIt = true

Detailed Description

Definition at line 54 of file G4CoulombScattering.hh.

Constructor & Destructor Documentation

◆ G4CoulombScattering()

G4CoulombScattering::G4CoulombScattering ( const G4String & name = "CoulombScat" )

explicit

Definition at line 60 of file G4CoulombScattering.cc.

  : G4VEmProcess(name),q2Max(TeV*TeV),isInitialised(false)
{
  //  G4cout << "G4CoulombScattering constructor "<< G4endl;
  SetBuildTableFlag(true);
  SetStartFromNullFlag(false);
  SetIntegral(true);
  SetSecondaryParticle(G4Proton::Proton());
  SetProcessSubType(fCoulombScattering);
}

◆ ~G4CoulombScattering()

G4CoulombScattering::~G4CoulombScattering ( )

virtual

Definition at line 73 of file G4CoulombScattering.cc.

74{}

Member Function Documentation

◆ InitialiseProcess()

void G4CoulombScattering::InitialiseProcess ( const G4ParticleDefinition * p )

overrideprotectedvirtual

Implements G4VEmProcess.

Definition at line 85 of file G4CoulombScattering.cc.

{
  // second initialisation not allowed for the time being
  // this means that polar angle limit change will not be appled 
  // after first initialisation
  if(isInitialised) { return; }
 
  G4EmParameters* param = G4EmParameters::Instance();
  G4double a = param->FactorForAngleLimit()*CLHEP::hbarc/CLHEP::fermi;
  q2Max = 0.5*a*a;
  G4double theta = param->MscThetaLimit();
 
  // restricted or non-restricted cross section table
  G4bool yes = false;
  if(theta == CLHEP::pi) { yes = true; }
  SetStartFromNullFlag(yes);
  /*
  G4cout << "### G4CoulombScattering::InitialiseProcess: "
     << p->GetParticleName()
     << " Emin(MeV)= " << MinKinEnergy()/MeV
     << " Emax(TeV)= " << MaxKinEnergy()/TeV
     << " nbins= " << LambdaBinning()
     << " theta= " << theta
     << G4endl;
  */
 
  isInitialised = true;
  G4double mass = p->GetPDGMass();
  G4String name = p->GetParticleName();
  //G4cout << name << "  type: " << p->GetParticleType() 
  //<< " mass= " << mass << G4endl;
  yes = true;
  if (mass > GeV || p->GetParticleType() == "nucleus") {
    SetBuildTableFlag(false);
    yes = false;
    if(name != "GenericIon") { SetVerboseLevel(0); }
  } else {
    if(name != "e-" && name != "e+" &&
       name != "mu+" && name != "mu-" && name != "pi+" && 
       name != "kaon+" && name != "proton" ) { SetVerboseLevel(0); }
  }
 
  if(!EmModel(0)) { 
    if(yes) { SetEmModel(new G4eCoulombScatteringModel()); } 
    else    { SetEmModel(new G4IonCoulombScatteringModel()); }
  }
  G4VEmModel* model = EmModel(0);
  G4double emin = std::max(param->MinKinEnergy(),model->LowEnergyLimit());
  G4double emax = std::min(param->MaxKinEnergy(),model->HighEnergyLimit());
  model->SetPolarAngleLimit(theta);
  model->SetLowEnergyLimit(emin);
  model->SetHighEnergyLimit(emax);
  AddEmModel(1, model);
}

◆ IsApplicable()

G4bool G4CoulombScattering::IsApplicable ( const G4ParticleDefinition & p )

finalvirtual

Implements G4VEmProcess.

Definition at line 78 of file G4CoulombScattering.cc.

{
  return (p.GetPDGCharge() != 0.0 && !p.IsShortLived());
}

◆ MinPrimaryEnergy()

G4double G4CoulombScattering::MinPrimaryEnergy	(	const G4ParticleDefinition *	part,
		const G4Material *	mat
	)

finalprotectedvirtual

Reimplemented from G4VEmProcess.

Definition at line 142 of file G4CoulombScattering.cc.

{
  // Pure Coulomb scattering
  G4double emin = 0.0;
 
  // Coulomb scattering combined with multiple or hadronic scattering
  G4double theta = G4EmParameters::Instance()->MscThetaLimit();
 
  if(0.0 < theta) {
    G4double p2 = q2Max*mat->GetIonisation()->GetInvA23()/(1.0 - cos(theta));
    G4double mass = part->GetPDGMass();
    emin = sqrt(p2 + mass*mass) - mass;
  }
 
  return emin;
}

◆ ProcessDescription()

void G4CoulombScattering::ProcessDescription ( std::ostream & out ) const

overridevirtual

Reimplemented from G4VEmProcess.

Definition at line 176 of file G4CoulombScattering.cc.

{
  out <<
  "  Coulomb scattering. Simulation of elastic scattering\n" << 
  "    events individually. May be used in combination with multiple\n" << 
  "    scattering, where Coulomb scattering is used for hard (large angle)\n" <<
  "    collisions and multiple scattering for soft collisions.";
  G4VEmProcess::ProcessDescription(out);
}

◆ StreamProcessInfo()

void G4CoulombScattering::StreamProcessInfo ( std::ostream & outFile ) const

overrideprotectedvirtual

Reimplemented from G4VEmProcess.

Definition at line 162 of file G4CoulombScattering.cc.

{
  G4double tetmin = G4EmParameters::Instance()->MscThetaLimit()/degree;
  outFile << "      ";
  if(tetmin > 179.) { outFile << "ThetaMin(p)"; }
  else              { outFile << tetmin; }
  outFile << " < Theta(degree) < 180";
 
  if(q2Max < DBL_MAX) { outFile << "; pLimit(GeV^1)= " << sqrt(q2Max)/GeV; }
  outFile << G4endl;
}

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

Public Member Functions

Protected Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ G4CoulombScattering()

◆ ~G4CoulombScattering()

Member Function Documentation

◆ InitialiseProcess()

◆ IsApplicable()

◆ MinPrimaryEnergy()

◆ ProcessDescription()

◆ StreamProcessInfo()