G4MonopoleTransportation Class Reference

Concrete class that does the geometrical transport. More...

#include <G4MonopoleTransportation.h>

Inheritance diagram for G4MonopoleTransportation:

Collaboration diagram for G4MonopoleTransportation:

Public Member Functions
	G4MonopoleTransportation (const G4Monopole *mpl, G4int verb=1)
	Constructor. More...
	~G4MonopoleTransportation ()
	Destructor.
virtual G4double	AlongStepGetPhysicalInteractionLength (const G4Track &track, G4double previousStepSize, G4double currentMinimumStep, G4double &currentSafety, G4GPILSelection *selection)
	G4VProcess::AlongStepGetPhysicalInteractionLength() implementation. More...
virtual G4VParticleChange *	AlongStepDoIt (const G4Track &track, const G4Step &stepData)
	G4VProcess::AlongStepDoIt() implementation, Proposes changes during step to fParticleChange of this class. More...
virtual G4VParticleChange *	PostStepDoIt (const G4Track &track, const G4Step &stepData)
	G4VProcess::PostStepDoIt() implementation. More...
virtual G4double	PostStepGetPhysicalInteractionLength (const G4Track &track, G4double previousStepSize, G4ForceCondition *pForceCond)
	G4VProcess::PostStepGetPhysicalInteractionLength() implementation. More...
G4PropagatorInField *	GetPropagatorInField ()
	Access fFieldPropagator, the assistant class that Propagate in a Field.
void	SetPropagatorInField (G4PropagatorInField *pFieldPropagator)
	Set fFieldPropagator, the assistant class that Propagate in a Field.
G4double	GetThresholdWarningEnergy () const
	Access fThreshold_Warning_Energy.
G4double	GetThresholdImportantEnergy () const
	Access fThreshold_Important_Energy.
G4int	GetThresholdTrials () const
	Access fThresholdTrials.
void	SetThresholdWarningEnergy (G4double newEnWarn)
	Set fThreshold_Warning_Energy.
void	SetThresholdImportantEnergy (G4double newEnImp)
	Set fThreshold_Important_Energy.
void	SetThresholdTrials (G4int newMaxTrials)
	Set fThresholdTrials.
G4double	GetMaxEnergyKilled () const
	Access fMaxEnergyKilled.
G4double	GetSumEnergyKilled () const
	Access fSumEnergyKilled.
void	ResetKilledStatistics (G4int report=1)
	Statistics for tracks killed (currently due to looping in field)
void	EnableShortStepOptimisation (G4bool optimise=true)
	Whether short steps < safety will avoid to call Navigator (if field=0)
virtual G4double	AtRestGetPhysicalInteractionLength (const G4Track &, G4ForceCondition *)
	No operation in AtRestDoIt.
virtual G4VParticleChange *	AtRestDoIt (const G4Track &, const G4Step &)
	No operation in AtRestDoIt.
virtual void	StartTracking (G4Track *aTrack)
	Reset state for new (potentially resumed) track.

Protected Member Functions
G4bool	DoesGlobalFieldExist ()
	Checks whether a field exists for the "global" field manager.

Private Attributes
const G4Monopole *	fParticleDef
	Monopole definition for charge and mass reference.
G4MonopoleFieldSetup *	fMagSetup
	Monpole field setup.
G4Navigator *	fLinearNavigator
	Propagator used to transport the particle.
G4PropagatorInField *	fFieldPropagator
	Propagator used to transport the particle.
G4ThreeVector	fTransportEndPosition
	The particle's state after this Step, Store for DoIt.
G4ThreeVector	fTransportEndMomentumDir
	The particle's state after this Step, Store for DoIt.
G4double	fTransportEndKineticEnergy
	The particle's state after this Step, Store for DoIt.
G4ThreeVector	fTransportEndSpin
	The particle's state after this Step, Store for DoIt.
G4bool	fMomentumChanged
	The particle's state after this Step, Store for DoIt.
G4bool	fEndGlobalTimeComputed
	The particle's state after this Step, Store for DoIt.
G4double	fCandidateEndGlobalTime
	The particle's state after this Step, Store for DoIt.
G4bool	fParticleIsLooping
	Is the monopole stuck in looping.
G4TouchableHandle	fCurrentTouchableHandle
	Current touchable handle.
G4bool	fGeometryLimitedStep
	Flag to determine whether a boundary was reached.
G4ThreeVector	fPreviousSftOrigin
	Remember last safety origin.
G4double	fPreviousSafety
	Remember last safety value.
G4ParticleChangeForTransport	fParticleChange
	New ParticleChange.
G4double	endpointDistance
	Endpint distance.
G4double	fThreshold_Trap_Energy
	Assume monopoles below this can bound to material.
G4double	fThreshold_Warning_Energy
	Warn above this energy about looping particle.
G4double	fThreshold_Important_Energy
	Hesitate above this about looping particle for a certain no of trials.
G4int	fThresholdTrials
	Nubmer of trials for looping particles.
G4int	fNoLooperTrials
	Counter for steps in which particle reports 'looping', if it is above 'Important' Energy.
G4double	fSumEnergyKilled
	Sum of abandoned looping tracks energies.
G4double	fMaxEnergyKilled
	Max of abandoned looping tracks energies.
G4bool	fShortStepOptimisation
	Whether to avoid calling G4Navigator for short step ( < safety) If using it, the safety estimate for endpoint will likely be smaller.
G4SafetyHelper *	fpSafetyHelper
	To pass it the safety value obtained.

Detailed Description

Concrete class that does the geometrical transport.

Quite big and clunky class of the monopole transportation.

Definition at line 44 of file G4MonopoleTransportation.h.

Constructor & Destructor Documentation

G4MonopoleTransportation()

G4MonopoleTransportation ( const G4Monopole *  mpl, G4int  verb = 1  )

explicit

Constructor.

Parameters

mpl	Reference to the monopole definition in GEANT4
verb	Verbosity level, if GEANT4 was set to be verbose

Definition at line 30 of file G4MonopoleTransportation.cc.

  : G4VProcess(G4String("MonopoleTransportation"), fTransportation),
    fParticleDef(mpl),
    fMagSetup(0),
    fLinearNavigator(0),
    fFieldPropagator(0),
    fParticleIsLooping(false),
    fPreviousSftOrigin(0., 0., 0.),
    fPreviousSafety(0.0),
    fThreshold_Trap_Energy(10 * MeV),
    fThreshold_Warning_Energy(100 * MeV),
    fThreshold_Important_Energy(250 * MeV),
    fThresholdTrials(10),
    fNoLooperTrials(0),
    fSumEnergyKilled(0.0), fMaxEnergyKilled(0.0),
    fShortStepOptimisation(false),    // Old default: true (=fast short steps)
    fpSafetyHelper(0)
{
  verboseLevel = verb;
 
  // set Process Sub Type
  SetProcessSubType(TRANSPORTATION);
 
  fMagSetup = G4MonopoleFieldSetup::GetMonopoleFieldSetup();
 
  G4TransportationManager* transportMgr ;
 
  transportMgr = G4TransportationManager::GetTransportationManager() ;
 
  fLinearNavigator = transportMgr->GetNavigatorForTracking() ;
 
  // fGlobalFieldMgr = transportMgr->GetFieldManager() ;
 
  fFieldPropagator = transportMgr->GetPropagatorInField() ;
 
  fpSafetyHelper =   transportMgr->GetSafetyHelper();  // New
 
  // Cannot determine whether a field exists here,
  //  because it would only work if the field manager has informed
  //  about the detector's field before this transportation process
  //  is constructed.
  // Instead later the method DoesGlobalFieldExist() is called
 
  static G4TouchableHandle nullTouchableHandle;  // Points to (G4VTouchable*) 0
  fCurrentTouchableHandle = nullTouchableHandle;
 
  fEndGlobalTimeComputed  = false;
  fCandidateEndGlobalTime = 0;
}

Member Function Documentation

AlongStepDoIt()

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

virtual

G4VProcess::AlongStepDoIt() implementation, Proposes changes during step to fParticleChange of this class.

Parameters

track	Propagating particle track reference
stepData	Current step reference

Returns

Reference to modified fParticleChange

Definition at line 345 of file G4MonopoleTransportation.cc.

AlongStepGetPhysicalInteractionLength()

G4double AlongStepGetPhysicalInteractionLength ( const G4Track &  track, G4double  previousStepSize, G4double  currentMinimumStep, G4double &  currentSafety, G4GPILSelection *  selection  )

virtual

G4VProcess::AlongStepGetPhysicalInteractionLength() implementation.

Responsibilities: Find whether the geometry limits the Step, and to what length Calculate the new value of the safety and return it. Store the final time, position and momentum.

Parameters

track	Propagating particle track reference
previousStepSize	This argument of base function is ignored
currentMinimumStep	Current minimum step size
currentSafety	Reference to current step safety
selection	Pointer for return value of GPILSelection, which is set to default value of CandidateForSelection

Returns

Next geometry step length

Definition at line 95 of file G4MonopoleTransportation.cc.

PostStepDoIt()

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

virtual

G4VProcess::PostStepDoIt() implementation.

Proposes changes after the step to fParticleChange of this class.

Responsible for the relocation

Parameters

track	Propagating particle track reference
stepData	Current step reference

Returns

Reference to modified fParticleChange

Definition at line 484 of file G4MonopoleTransportation.cc.

PostStepGetPhysicalInteractionLength()

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

virtual

G4VProcess::PostStepGetPhysicalInteractionLength() implementation.

Forces the PostStepDoIt action to be called, so that it can do the relocation if it is needed, but does not limit the step.

Parameters

track	This argument of base function is ignored
previousStepSize	This argument of base function is ignored
pForceCond	Force condition by default

Returns

DBL_MAX

Definition at line 475 of file G4MonopoleTransportation.cc.

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

• simulation/monopoles/include/G4MonopoleTransportation.h
• simulation/monopoles/include/G4MonopoleTransportationInline.h
• simulation/monopoles/src/G4MonopoleTransportation.cc