#include <G4OpRayleigh.hh>

Inheritance diagram for G4OpRayleigh:

Public Member Functions
	G4OpRayleigh (const G4String &processName="OpRayleigh", G4ProcessType type=fOptical)

virtual	~G4OpRayleigh ()

virtual G4bool	IsApplicable (const G4ParticleDefinition &aParticleType) override

virtual void	BuildPhysicsTable (const G4ParticleDefinition &aParticleType) override

virtual G4double	GetMeanFreePath (const G4Track &aTrack, G4double, G4ForceCondition *) override

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

virtual G4PhysicsTable *	GetPhysicsTable () const

virtual void	DumpPhysicsTable () const

virtual void	PreparePhysicsTable (const G4ParticleDefinition &) override

virtual void	Initialise ()

void	SetVerboseLevel (G4int)

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 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 &)

virtual G4double	GetCrossSection (const G4double, const G4MaterialCutsCouple *)

virtual G4double	MinPrimaryEnergy (const G4ParticleDefinition , const G4Material )

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

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	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 const G4VProcess *	GetCreatorProcess () const

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 Attributes
G4PhysicsTable *	thePhysicsTable

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

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

Protected Member Functions inherited from G4VDiscreteProcess
Protected Member Functions inherited from G4VProcess
void	SubtractNumberOfInteractionLengthLeft (G4double prevStepSize)

void	ClearNumberOfInteractionLengthLeft ()

Detailed Description

Definition at line 53 of file G4OpRayleigh.hh.

Constructor & Destructor Documentation

◆ G4OpRayleigh()

G4OpRayleigh::G4OpRayleigh	(	const G4String &	processName = "OpRayleigh",
		G4ProcessType	type = fOptical )

explicit

Definition at line 71 of file G4OpRayleigh.cc.

  : G4VDiscreteProcess(processName, type)
{
  Initialise();
  SetProcessSubType(fOpRayleigh);
  thePhysicsTable = nullptr;
 
  if(verboseLevel > 0)
  {
    G4cout << GetProcessName() << " is created " << G4endl;
  }
}

◆ ~G4OpRayleigh()

G4OpRayleigh::~G4OpRayleigh ( )

virtual

Definition at line 85 of file G4OpRayleigh.cc.

{
  // VI: inside this PhysicsTable all properties are unique
  //     it is not possible to destroy
  delete thePhysicsTable;
}

Member Function Documentation

◆ BuildPhysicsTable()

void G4OpRayleigh::BuildPhysicsTable ( const G4ParticleDefinition & aParticleType )

overridevirtual

Reimplemented from G4VProcess.

Definition at line 188 of file G4OpRayleigh.cc.

{
  if(thePhysicsTable)
  {
    // thePhysicsTable->clearAndDestroy();
    delete thePhysicsTable;
    thePhysicsTable = nullptr;
  }
 
  const G4MaterialTable* theMaterialTable = G4Material::GetMaterialTable();
  const size_t numOfMaterials             = G4Material::GetNumberOfMaterials();
  thePhysicsTable                         = new G4PhysicsTable(numOfMaterials);
 
  for(size_t i = 0; i < numOfMaterials; ++i)
  {
    G4Material* material               = (*theMaterialTable)[i];
    G4MaterialPropertiesTable* matProp = material->GetMaterialPropertiesTable();
    G4PhysicsFreeVector* rayleigh = nullptr;
    if(matProp)
    {
      rayleigh = matProp->GetProperty(kRAYLEIGH);
      if(rayleigh == nullptr)
        rayleigh = CalculateRayleighMeanFreePaths(material);
    }
    thePhysicsTable->insertAt(i, rayleigh);
  }
}

◆ DumpPhysicsTable()

void G4OpRayleigh::DumpPhysicsTable ( ) const

inlinevirtual

Definition at line 112 of file G4OpRayleigh.hh.

{
  for(size_t i = 0; i < thePhysicsTable->entries(); ++i)
  {
    ((G4PhysicsFreeVector*) (*thePhysicsTable)[i])->DumpValues();
  }
}

◆ GetMeanFreePath()

G4double G4OpRayleigh::GetMeanFreePath	(	const G4Track &	aTrack,
		G4double	,
		G4ForceCondition *	)

overridevirtual

Implements G4VDiscreteProcess.

Definition at line 217 of file G4OpRayleigh.cc.

{
  auto rayleigh = static_cast<G4PhysicsFreeVector*>(
      (*thePhysicsTable)(aTrack.GetMaterial()->GetIndex()));
 
  G4double rsLength = DBL_MAX;
  if(rayleigh)
  {
    rsLength = rayleigh->Value(aTrack.GetDynamicParticle()->GetTotalMomentum(),
                               idx_rslength);
  }
  return rsLength;
}

◆ GetPhysicsTable()

G4PhysicsTable * G4OpRayleigh::GetPhysicsTable ( ) const

inlinevirtual

Definition at line 120 of file G4OpRayleigh.hh.

{
  return thePhysicsTable;
}

◆ Initialise()

void G4OpRayleigh::Initialise ( )

virtual

Definition at line 99 of file G4OpRayleigh.cc.

{
  SetVerboseLevel(G4OpticalParameters::Instance()->GetRayleighVerboseLevel());
}

Referenced by G4OpRayleigh(), and PreparePhysicsTable().

◆ IsApplicable()

G4bool G4OpRayleigh::IsApplicable ( const G4ParticleDefinition & aParticleType )

inlineoverridevirtual

Reimplemented from G4VProcess.

Definition at line 106 of file G4OpRayleigh.hh.

{
  return (&aParticleType == G4OpticalPhoton::OpticalPhoton());
}

◆ PostStepDoIt()

G4VParticleChange * G4OpRayleigh::PostStepDoIt	(	const G4Track &	aTrack,
		const G4Step &	aStep )

overridevirtual

Reimplemented from G4VDiscreteProcess.

Definition at line 105 of file G4OpRayleigh.cc.

{
  aParticleChange.Initialize(aTrack);
  const G4DynamicParticle* aParticle = aTrack.GetDynamicParticle();
 
  if(verboseLevel > 1)
  {
    G4cout << "OpRayleigh: Scattering Photon!" << G4endl
           << "Old Momentum Direction: " << aParticle->GetMomentumDirection()
           << G4endl << "Old Polarization: " << aParticle->GetPolarization()
           << G4endl;
  }
 
  G4double cosTheta;
  G4ThreeVector oldMomDir, newMomDir;
  G4ThreeVector oldPol, newPol;
  G4double rand;
  G4double cost, sint, sinphi, cosphi;
 
  do
  {
    // Try to simulate the scattered photon momentum direction
    // w.r.t. the initial photon momentum direction
    cost = G4UniformRand();
    sint = std::sqrt(1. - cost * cost);
    // consider for the angle 90-180 degrees
    if(G4UniformRand() < 0.5)
      cost = -cost;
 
    // simulate the phi angle
    rand   = twopi * G4UniformRand();
    sinphi = std::sin(rand);
    cosphi = std::cos(rand);
 
    // construct the new momentum direction
    newMomDir.set(sint * cosphi, sint * sinphi, cost);
    oldMomDir = aParticle->GetMomentumDirection();
    newMomDir.rotateUz(oldMomDir);
 
    // calculate the new polarization direction
    // The new polarization needs to be in the same plane as the new
    // momentum direction and the old polarization direction
    oldPol = aParticle->GetPolarization();
    newPol = (oldPol - newMomDir.dot(oldPol) * newMomDir).unit();
 
    // There is a corner case, where the new momentum direction
    // is the same as old polarization direction:
    // random generate the azimuthal angle w.r.t. new momentum direction
    if(newPol.mag() == 0.)
    {
      rand = G4UniformRand() * twopi;
      newPol.set(std::cos(rand), std::sin(rand), 0.);
      newPol.rotateUz(newMomDir);
    }
    else
    {
      // There are two directions perpendicular to the new momentum direction
      if(G4UniformRand() < 0.5)
        newPol = -newPol;
    }
 
    // simulate according to the distribution cos^2(theta)
    cosTheta = newPol.dot(oldPol);
    // Loop checking, 13-Aug-2015, Peter Gumplinger
  } while(std::pow(cosTheta, 2) < G4UniformRand());
 
  aParticleChange.ProposePolarization(newPol);
  aParticleChange.ProposeMomentumDirection(newMomDir);
 
  if(verboseLevel > 1)
  {
    G4cout << "New Polarization: " << newPol << G4endl
           << "Polarization Change: " << *(aParticleChange.GetPolarization())
           << G4endl << "New Momentum Direction: " << newMomDir << G4endl
           << "Momentum Change: " << *(aParticleChange.GetMomentumDirection())
           << G4endl;
  }
 
  return G4VDiscreteProcess::PostStepDoIt(aTrack, aStep);
}

◆ PreparePhysicsTable()

void G4OpRayleigh::PreparePhysicsTable ( const G4ParticleDefinition & )

overridevirtual

Reimplemented from G4VProcess.

Definition at line 93 of file G4OpRayleigh.cc.

{
  Initialise();
}

◆ SetVerboseLevel()

void G4OpRayleigh::SetVerboseLevel ( G4int verbose )

Definition at line 308 of file G4OpRayleigh.cc.

{
  verboseLevel = verbose;
  G4OpticalParameters::Instance()->SetRayleighVerboseLevel(verboseLevel);
}

Referenced by Initialise().

Member Data Documentation

◆ thePhysicsTable

G4PhysicsTable* G4OpRayleigh::thePhysicsTable

protected

Definition at line 88 of file G4OpRayleigh.hh.

Referenced by BuildPhysicsTable(), DumpPhysicsTable(), G4OpRayleigh(), GetPhysicsTable(), and ~G4OpRayleigh().

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

Public Member Functions

Protected Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ G4OpRayleigh()

◆ ~G4OpRayleigh()

Member Function Documentation

◆ BuildPhysicsTable()

◆ DumpPhysicsTable()

◆ GetMeanFreePath()

◆ GetPhysicsTable()

◆ Initialise()

◆ IsApplicable()

◆ PostStepDoIt()

◆ PreparePhysicsTable()

◆ SetVerboseLevel()

Member Data Documentation

◆ thePhysicsTable