G4UCNMultiScattering Class Reference

#include <G4UCNMultiScattering.hh>

Inheritance diagram for G4UCNMultiScattering:

Collaboration diagram for G4UCNMultiScattering:

Public Member Functions
	G4UCNMultiScattering (const G4String &processName="UCNMultiScattering", G4ProcessType type=fUCN)
virtual	~G4UCNMultiScattering ()
G4bool	IsApplicable (const G4ParticleDefinition &aParticleType)
G4double	GetMeanFreePath (const G4Track &aTrack, G4double, G4ForceCondition *condition)
G4VParticleChange *	PostStepDoIt (const G4Track &aTrack, const G4Step &aStep)
G4ThreeVector	Scatter ()
Public Member Functions inherited from G4VDiscreteProcess
	G4VDiscreteProcess (const G4String &, G4ProcessType aType=fNotDefined)
	G4VDiscreteProcess (G4VDiscreteProcess &)
virtual	~G4VDiscreteProcess ()
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 &)
Public Member Functions inherited from G4VProcess
	G4VProcess (const G4String &aName="NoName", G4ProcessType aType=fNotDefined)
	G4VProcess (const G4VProcess &right)
virtual	~G4VProcess ()
G4int	operator== (const G4VProcess &right) const
G4int	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 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
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 &)

Additional Inherited Members
Static Public Member Functions inherited from G4VProcess
static const G4String &	GetProcessTypeName (G4ProcessType)
Protected Member Functions inherited from G4VProcess
void	SubtractNumberOfInteractionLengthLeft (G4double previousStepSize)
void	ClearNumberOfInteractionLengthLeft ()
Protected Attributes inherited from G4VProcess
const G4ProcessManager *	aProcessManager
G4VParticleChange *	pParticleChange
G4ParticleChange	aParticleChange
G4double	theNumberOfInteractionLengthLeft
G4double	currentInteractionLength
G4double	theInitialNumberOfInteractionLength
G4String	theProcessName
G4String	thePhysicsTableFileName
G4ProcessType	theProcessType
G4int	theProcessSubType
G4double	thePILfactor
G4bool	enableAtRestDoIt
G4bool	enableAlongStepDoIt
G4bool	enablePostStepDoIt
G4int	verboseLevel

Detailed Description

Definition at line 66 of file G4UCNMultiScattering.hh.

Constructor & Destructor Documentation

G4UCNMultiScattering::G4UCNMultiScattering	(	const G4String &	processName = "UCNMultiScattering",
		G4ProcessType	type = fUCN
	)

Definition at line 69 of file G4UCNMultiScattering.cc.

                    : G4VDiscreteProcess(processName, type)
{
  if (verboseLevel>0) G4cout << GetProcessName() << " is created " << G4endl;

  SetProcessSubType(fUCNMultiScattering);
}

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G4UCNMultiScattering::~G4UCNMultiScattering ( )

virtual

Definition at line 86 of file G4UCNMultiScattering.cc.

{}

Member Function Documentation

G4double G4UCNMultiScattering::GetMeanFreePath ( const G4Track &  aTrack, G4double  , G4ForceCondition *  condition  )

virtual

Implements G4VDiscreteProcess.

Definition at line 118 of file G4UCNMultiScattering.cc.

{
  G4double AttenuationLength = DBL_MAX;

  const G4Material* aMaterial = aTrack.GetMaterial();
  G4MaterialPropertiesTable* aMaterialPropertiesTable =
                                     aMaterial->GetMaterialPropertiesTable();

  G4double crossect = 0.0;
  if (aMaterialPropertiesTable) {
     crossect = aMaterialPropertiesTable->GetConstProperty("SCATCS");
//     if(crossect == 0.0)
//       G4cout << "No UCN MultiScattering length specified" << G4endl;
  }
//  else G4cout << "No UCN MultiScattering length specified" << G4endl;

  if (crossect) {

    // Calculate a UCN MultiScattering length for this cross section

    G4double density = aMaterial->GetTotNbOfAtomsPerVolume();

    crossect *= barn;
  
    // attenuation length in mm
    AttenuationLength = 1./density/crossect; 
  }

  return AttenuationLength;
}

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G4bool G4UCNMultiScattering::IsApplicable ( const G4ParticleDefinition &  aParticleType )

inlinevirtual

Reimplemented from G4VProcess.

Definition at line 116 of file G4UCNMultiScattering.hh.

{
   return ( &aParticleType == G4Neutron::NeutronDefinition() );
}

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G4VParticleChange * G4UCNMultiScattering::PostStepDoIt ( const G4Track &  aTrack, const G4Step &  aStep  )

virtual

Reimplemented from G4VDiscreteProcess.

Definition at line 96 of file G4UCNMultiScattering.cc.

{
  aParticleChange.Initialize(aTrack);

  if ( verboseLevel > 0 ) G4cout << "UCNMULTISCATTER at: "
     << aTrack.GetProperTime()/s << "s, "
     << aTrack.GetGlobalTime()/s << "s. "
     << ", after track length " << aTrack.GetTrackLength()/cm << "cm, "
           << "in volume "
           << aStep.GetPostStepPoint()->GetPhysicalVolume()->GetName()
           << G4endl;

  G4ThreeVector scattered = Scatter();
      
  aParticleChange.ProposeMomentumDirection(-scattered);

  return G4VDiscreteProcess::PostStepDoIt(aTrack, aStep);
}

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G4ThreeVector G4UCNMultiScattering::Scatter

(

)

Definition at line 151 of file G4UCNMultiScattering.cc.

{

  G4ThreeVector final(0.,0.,1.);

  // Make a simple uniform distribution in 4 pi
  // apply scattering, calculate angle phi, theta

  G4double theta = std::acos(2*G4UniformRand()-1);
  G4double phi = G4UniformRand() * 2 * pi;

  final.rotateY(theta);
  final.rotateZ(phi);
  final = final.unit();

  return final;
}

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

• geant4.10.03.p01/source/processes/hadronic/processes/include/G4UCNMultiScattering.hh
• geant4.10.03.p01/source/processes/hadronic/processes/src/G4UCNMultiScattering.cc