#include <MonopoleTransportation.h>

Inheritance diagram for MonopoleTransportation:

Public Member Functions
G4VParticleChange *	AlongStepDoIt (const G4Track &track, const G4Step &stepData) override

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

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

G4double	AtRestGetPhysicalInteractionLength (const G4Track &, G4ForceCondition *) override

void	EnableShortStepOptimisation (G4bool optimise=true)

G4double	GetMaxEnergyKilled () const

G4PropagatorInField *	GetPropagatorInField ()

G4double	GetSumEnergyKilled () const

G4double	GetThresholdImportantEnergy () const

G4int	GetThresholdTrials () const

G4double	GetThresholdWarningEnergy () const

	MonopoleTransportation (const Monopole *p, G4int verbosityLevel=1)

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

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

void	ResetKilledStatistics (G4int report=1)

void	SetPropagatorInField (G4PropagatorInField *pFieldPropagator)

void	SetThresholdImportantEnergy (G4double newEnImp)

void	SetThresholdTrials (G4int newMaxTrials)

void	SetThresholdWarningEnergy (G4double newEnWarn)

void	StartTracking (G4Track *aTrack) override

	~MonopoleTransportation () override

Protected Member Functions
G4bool	DoesGlobalFieldExist ()

Private Attributes
G4double	endpointDistance

G4double	fCandidateEndGlobalTime

G4TouchableHandle	fCurrentTouchableHandle

G4bool	fEndGlobalTimeComputed

G4PropagatorInField *	fFieldPropagator

G4bool	fGeometryLimitedStep

CMSFieldManager *	fieldMgrCMS

G4Navigator *	fLinearNavigator

G4double	fMaxEnergyKilled

G4bool	fMomentumChanged

G4int	fNoLooperTrials

G4ParticleChangeForTransport	fParticleChange

const Monopole *	fParticleDef

G4bool	fParticleIsLooping

G4double	fPreviousSafety

G4ThreeVector	fPreviousSftOrigin

G4SafetyHelper *	fpSafetyHelper

G4bool	fShortStepOptimisation

G4double	fSumEnergyKilled

G4double	fThreshold_Important_Energy

G4double	fThreshold_Warning_Energy

G4int	fThresholdTrials

G4double	fTransportEndKineticEnergy

G4ThreeVector	fTransportEndMomentumDir

G4ThreeVector	fTransportEndPosition

G4ThreeVector	fTransportEndSpin

Detailed Description

Definition at line 45 of file MonopoleTransportation.h.

Constructor & Destructor Documentation

MonopoleTransportation::MonopoleTransportation	(	const Monopole *	p,
		G4int	verbosityLevel = `1`
	)

Definition at line 33 of file MonopoleTransportation.cc.

References fCandidateEndGlobalTime, fCurrentTouchableHandle, fEndGlobalTimeComputed, fFieldPropagator, fLinearNavigator, and fpSafetyHelper.

   : G4VProcess( G4String("MonopoleTransportation"), fTransportation ),
     fParticleDef(mpl),
     fieldMgrCMS(nullptr),
     fLinearNavigator(nullptr),
     fFieldPropagator(nullptr),
     fParticleIsLooping( false ),
     fPreviousSftOrigin (0.,0.,0.),
     fPreviousSafety    ( 0.0 ),
     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(nullptr)
 {
   verboseLevel = verb;
 
   // set Process Sub Type
   SetProcessSubType(TRANSPORTATION);  
 
 #ifdef G4MULTITHREADED
   // Do not finalize the MonopoleTransportation class 
   if (G4Threading::IsMasterThread())
     {
       return;
     }
 #endif
 
   G4TransportationManager* transportMgr = 
     G4TransportationManager::GetTransportationManager(); 
 
   fLinearNavigator = transportMgr->GetNavigatorForTracking() ; 
 
   fFieldPropagator = transportMgr->GetPropagatorInField() ;
   fpSafetyHelper =   transportMgr->GetSafetyHelper();  
 
   // 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
 
   fCurrentTouchableHandle = nullptr; 
 
   fEndGlobalTimeComputed  = false;
   fCandidateEndGlobalTime = 0;
 }

MonopoleTransportation::~MonopoleTransportation ( )

override

Definition at line 85 of file MonopoleTransportation.cc.

References AlongStepGetPhysicalInteractionLength(), and fSumEnergyKilled.

 {
   if( (verboseLevel > 0) && (fSumEnergyKilled > 0.0 ) ){ 
     /*
     G4cout << " MonopoleTransportation: Statistics for looping particles " 
            << G4endl;
     G4cout << "   Sum of energy of loopers killed: " <<  fSumEnergyKilled << G4endl;
     G4cout << "   Max energy of loopers killed: " <<  fMaxEnergyKilled << G4endl;
     */
   } 
 }

Member Function Documentation

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

override

Definition at line 360 of file MonopoleTransportation.cc.

References fCandidateEndGlobalTime, fEndGlobalTimeComputed, fFieldPropagator, fMaxEnergyKilled, fMomentumChanged, fNoLooperTrials, fParticleChange, fParticleIsLooping, fSumEnergyKilled, fThreshold_Important_Energy, fThreshold_Warning_Energy, fThresholdTrials, fTransportEndKineticEnergy, fTransportEndMomentumDir, fTransportEndPosition, fTransportEndSpin, ecalTB2006H4_GenSimDigiReco_cfg::G4cout, MeV, and PostStepGetPhysicalInteractionLength().

 {
   fParticleChange.Initialize(track) ;
 
   //  Code for specific process 
   //
   fParticleChange.ProposePosition(fTransportEndPosition) ;
   fParticleChange.ProposeMomentumDirection(fTransportEndMomentumDir) ;
   fParticleChange.ProposeEnergy(fTransportEndKineticEnergy) ;
   fParticleChange.SetMomentumChanged(fMomentumChanged) ;
 
   fParticleChange.ProposePolarization(fTransportEndSpin);
   
   G4double deltaTime = 0.0 ;
 
   // Calculate  Lab Time of Flight (ONLY if field Equations used it!)
   G4double startTime = track.GetGlobalTime() ;
   
   if (!fEndGlobalTimeComputed)
   {
      // The time was not integrated .. make the best estimate possible
      //
      G4double finalVelocity   = track.GetVelocity() ;
      G4double initialVelocity = stepData.GetPreStepPoint()->GetVelocity() ;
      G4double stepLength      = track.GetStepLength() ;
 
      deltaTime= 0.0;  // in case initialVelocity = 0 
      if (finalVelocity > 0.0)
      {
         G4double meanInverseVelocity ;
         meanInverseVelocity = 0.5
                             * ( 1.0 / initialVelocity + 1.0 / finalVelocity ) ;
         deltaTime = stepLength * meanInverseVelocity ;
      }
      else if( initialVelocity > 0.0 )
      {
         deltaTime = stepLength/initialVelocity ;
      }
      fCandidateEndGlobalTime   = startTime + deltaTime ;
   }
   else
   {
      deltaTime = fCandidateEndGlobalTime - startTime ;
   }
 
   fParticleChange.ProposeGlobalTime( fCandidateEndGlobalTime ) ;
 
   // Now Correct by Lorentz factor to get "proper" deltaTime
   
   G4double  restMass       = track.GetDynamicParticle()->GetMass() ;
   G4double deltaProperTime = deltaTime*( restMass/track.GetTotalEnergy() ) ;
 
   fParticleChange.ProposeProperTime(track.GetProperTime() + deltaProperTime) ;
   //fParticleChange. ProposeTrueStepLength( track.GetStepLength() ) ;
 
   // If the particle is caught looping or is stuck (in very difficult
   // boundaries) in a magnetic field (doing many steps) 
   //   THEN this kills it ...
   //
   if ( fParticleIsLooping )
   {
       G4double endEnergy= fTransportEndKineticEnergy;
 
       if( (endEnergy < fThreshold_Important_Energy) 
           || (fNoLooperTrials >= fThresholdTrials ) ){
         // Kill the looping particle 
         //
         fParticleChange.ProposeTrackStatus( fStopAndKill )  ;
 
         // 'Bare' statistics
         fSumEnergyKilled += endEnergy; 
         if( endEnergy > fMaxEnergyKilled) { fMaxEnergyKilled= endEnergy; }
 
 #ifdef G4VERBOSE
         if( (verboseLevel > 1) || 
             ( endEnergy > fThreshold_Warning_Energy )  ) { 
           G4cout << " MonopoleTransportation is killing track that is looping or stuck "
                  << G4endl
                  << "   This track has " << track.GetKineticEnergy() / MeV
                  << " MeV energy." << G4endl;
           G4cout << "   Number of trials = " << fNoLooperTrials 
                  << "   No of calls to AlongStepDoIt = " << noCalls 
                  << G4endl;
         }
 #endif
         fNoLooperTrials=0; 
       }
       else{
         fNoLooperTrials ++; 
 #ifdef G4VERBOSE
         if( (verboseLevel > 2) ){
           G4cout << "   MonopoleTransportation::AlongStepDoIt(): Particle looping -  "
                  << "   Number of trials = " << fNoLooperTrials 
                  << "   No of calls to  = " << noCalls 
                  << G4endl;
         }
 #endif
       }
   }else{
       fNoLooperTrials=0; 
   }
 
   // Another (sometimes better way) is to use a user-limit maximum Step size
   // to alleviate this problem .. 
 
   // Introduce smooth curved trajectories to particle-change
   //
   fParticleChange.SetPointerToVectorOfAuxiliaryPoints
     (fFieldPropagator->GimmeTrajectoryVectorAndForgetIt() );
 
   return &fParticleChange ;
 }

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

override

Definition at line 105 of file MonopoleTransportation.cc.

References CMSFieldManager::ConfigureForTrack(), endpointDistance, funct::false, fCandidateEndGlobalTime, fEndGlobalTimeComputed, fFieldPropagator, fGeometryLimitedStep, fieldMgrCMS, fLinearNavigator, fMomentumChanged, fParticleChange, fParticleDef, fParticleIsLooping, fPreviousSafety, fPreviousSftOrigin, fpSafetyHelper, fShortStepOptimisation, fTransportEndKineticEnergy, fTransportEndMomentumDir, fTransportEndPosition, fTransportEndSpin, ecalTB2006H4_GenSimDigiReco_cfg::G4cout, mag(), Monopole::MagneticCharge(), CMSFieldManager::SetMonopoleTracking(), spin(), funct::sqr(), mathSSE::sqrt(), and funct::true.

Referenced by ~MonopoleTransportation().

 {  
   // change to monopole equation
   fieldMgrCMS->SetMonopoleTracking(true);
 
   G4double geometryStepLength, newSafety ; 
   fParticleIsLooping = false ;
 
   // Initial actions moved to  StartTrack()   
   // --------------------------------------
   // Note: in case another process changes touchable handle
   //    it will be necessary to add here (for all steps)   
   // fCurrentTouchableHandle = aTrack->GetTouchableHandle();
 
   // GPILSelection is set to defaule value of CandidateForSelection
   // It is a return value
   //
   *selection = CandidateForSelection ;
 
   // Get initial Energy/Momentum of the track
   //
   const G4DynamicParticle* pParticle      = track.GetDynamicParticle() ;
   const G4ThreeVector& startMomentumDir   = pParticle->GetMomentumDirection() ;
   G4ThreeVector startPosition             = track.GetPosition() ;
 
   // The Step Point safety can be limited by other geometries and/or the 
   // assumptions of any process - it's not always the geometrical safety.
   // We calculate the starting point's isotropic safety here.
   //
   G4ThreeVector OriginShift = startPosition - fPreviousSftOrigin ;
   G4double      MagSqShift  = OriginShift.mag2() ;
   if( MagSqShift >= sqr(fPreviousSafety) )
   {
      currentSafety = 0.0 ;
   }
   else
   {
      currentSafety = fPreviousSafety - std::sqrt(MagSqShift) ;
   }
 
   // Is the monopole charged ?
   //
   G4double particleMagneticCharge = fParticleDef->MagneticCharge() ; 
   G4double particleElectricCharge = pParticle->GetCharge();
 
   fGeometryLimitedStep = false ;
 
   // There is no need to locate the current volume. It is Done elsewhere:
   //   On track construction 
   //   By the tracking, after all AlongStepDoIts, in "Relocation"
 
   // Check whether the particle have an (EM) field force exerting upon it
   G4bool          fieldExertsForce = false ;
     
   if(particleMagneticCharge != 0.0 && fieldMgrCMS) {
     // Message the field Manager, to configure it for this track
     fieldMgrCMS->ConfigureForTrack( &track );
     // Moved here, in order to allow a transition
     //   from a zero-field  status (with fieldMgr->(field)0
     //   to a finite field  status
 
     // If the field manager has no field, there is no field !
     fieldExertsForce = (fieldMgrCMS->GetDetectorField() != nullptr);      
   }
 
   // G4cout << " G4Transport:  field exerts force= " << fieldExertsForce
   //          << "  fieldMgr= " << fieldMgr << G4endl;
 
   // Choose the calculation of the transportation: Field or not 
   //
   if( !fieldExertsForce ) 
   {
      G4double linearStepLength ;
      if( fShortStepOptimisation && (currentMinimumStep <= currentSafety) )
      {
        // The Step is guaranteed to be taken
        //
        geometryStepLength   = currentMinimumStep ;
        fGeometryLimitedStep = false ;
      }
      else
      {
        //  Find whether the straight path intersects a volume
        //
        linearStepLength = fLinearNavigator->ComputeStep( startPosition, 
                                                          startMomentumDir,
                                                          currentMinimumStep, 
                                                          newSafety) ;
        // Remember last safety origin & value.
        //
        fPreviousSftOrigin = startPosition ;
        fPreviousSafety    = newSafety ; 
        // fpSafetyHelper->SetCurrentSafety( newSafety, startPosition);
 
        // The safety at the initial point has been re-calculated:
        //
        currentSafety = newSafety ;
           
        fGeometryLimitedStep= (linearStepLength <= currentMinimumStep); 
        if( fGeometryLimitedStep )
        {
          // The geometry limits the Step size (an intersection was found.)
          geometryStepLength   = linearStepLength ;
        } 
        else
        {
          // The full Step is taken.
          geometryStepLength   = currentMinimumStep ;
        }
      }
      endpointDistance = geometryStepLength ;
 
      // Calculate final position
      //
      fTransportEndPosition = startPosition+geometryStepLength*startMomentumDir ;
 
      // Momentum direction, energy and polarisation are unchanged by transport
      //
      fTransportEndMomentumDir   = startMomentumDir ; 
      fTransportEndKineticEnergy = track.GetKineticEnergy() ;
      fTransportEndSpin          = track.GetPolarization();
      fParticleIsLooping         = false ;
      fMomentumChanged           = false ; 
      fEndGlobalTimeComputed     = false ;
   }
   else   //  A field exerts force
   {
      G4double       momentumMagnitude = pParticle->GetTotalMomentum() ;
      G4ThreeVector  EndUnitMomentum ;
      G4double       lengthAlongCurve ;
      G4double       restMass = fParticleDef->GetPDGMass() ;
 
      G4ChargeState chargeState(particleElectricCharge,  // The charge can change (dynamic)
                                fParticleDef->GetPDGSpin(),
                                0,   //  Magnetic moment:  pParticleDef->GetMagneticMoment(),
                                0,   //  Electric Dipole moment - not in Particle Definition 
                                particleMagneticCharge );   // in Mev/c 
 
      G4EquationOfMotion* equationOfMotion = 
        fFieldPropagator->GetChordFinder()->GetIntegrationDriver()->GetEquationOfMotion();
 
      equationOfMotion
        ->SetChargeMomentumMass( chargeState,       //  Was particleMagneticCharge - in Mev/c
                                 momentumMagnitude, //  Was particleElectricCharge 
                                 restMass ) ;  
      // SetChargeMomentumMass now passes both the electric and magnetic charge - in chargeState
 
      G4ThreeVector spin        = track.GetPolarization() ;
      G4FieldTrack  aFieldTrack = G4FieldTrack( startPosition, 
                                                track.GetMomentumDirection(),
                                                0.0, 
                                                track.GetKineticEnergy(),
                                                restMass,
                                                track.GetVelocity(),
                                                track.GetGlobalTime(), // Lab.
                                                track.GetProperTime(), // Part.
                                                &spin                  ) ;
      if( currentMinimumStep > 0 ) 
      {
         // Do the Transport in the field (non recti-linear)
         //
         lengthAlongCurve = fFieldPropagator->ComputeStep( aFieldTrack,
                                                           currentMinimumStep, 
                                                           currentSafety,
                                                           track.GetVolume() ) ;
         fGeometryLimitedStep= lengthAlongCurve < currentMinimumStep; 
         if( fGeometryLimitedStep ) {
            geometryStepLength   = lengthAlongCurve ;
         } else {
            geometryStepLength   = currentMinimumStep ;
         }
      }
      else
      {
         geometryStepLength   = lengthAlongCurve= 0.0 ;
         fGeometryLimitedStep = false ;
      }
 
      // Remember last safety origin & value.
      //
      fPreviousSftOrigin = startPosition ;
      fPreviousSafety    = currentSafety ;         
      // fpSafetyHelper->SetCurrentSafety( newSafety, startPosition);
        
      // Get the End-Position and End-Momentum (Dir-ection)
      //
      fTransportEndPosition = aFieldTrack.GetPosition() ;
 
      // Momentum:  Magnitude and direction can be changed too now ...
      //
      fMomentumChanged         = true ; 
      fTransportEndMomentumDir = aFieldTrack.GetMomentumDir() ;
 
      fTransportEndKineticEnergy  = aFieldTrack.GetKineticEnergy() ; 
 
      fCandidateEndGlobalTime   = aFieldTrack.GetLabTimeOfFlight();
      fEndGlobalTimeComputed    = true;
 
      fTransportEndSpin = aFieldTrack.GetSpin();
      fParticleIsLooping = fFieldPropagator->IsParticleLooping() ;
      endpointDistance   = (fTransportEndPosition - startPosition).mag() ;
   }
 
   // If we are asked to go a step length of 0, and we are on a boundary
   // then a boundary will also limit the step -> we must flag this.
   //
   if( currentMinimumStep == 0.0 ) 
   {
       if( currentSafety == 0.0 )  fGeometryLimitedStep = true ;
   }
 
   // Update the safety starting from the end-point,
   // if it will become negative at the end-point.
   //
   if( currentSafety < endpointDistance ) 
   {
       if( particleMagneticCharge != 0.0 ) {
 
          G4double endSafety =
                fLinearNavigator->ComputeSafety( fTransportEndPosition) ;
          currentSafety      = endSafety ;
          fPreviousSftOrigin = fTransportEndPosition ;
          fPreviousSafety    = currentSafety ; 
          fpSafetyHelper->SetCurrentSafety( currentSafety, fTransportEndPosition);
 
          // Because the Stepping Manager assumes it is from the start point, 
          //  add the StepLength
          //
          currentSafety     += endpointDistance ;
 
 #ifdef G4DEBUG_TRANSPORT 
          G4cout.precision(12) ;
          G4cout << "***MonopoleTransportation::AlongStepGPIL ** " << G4endl  ;
          G4cout << "  Called Navigator->ComputeSafety at " << fTransportEndPosition
                 << "    and it returned safety= " << endSafety << G4endl ; 
          G4cout << "  Adding endpoint distance " << endpointDistance 
                 << "   to obtain pseudo-safety= " << currentSafety << G4endl ; 
 #endif
       }
   }            
 
   fParticleChange.ProposeTrueStepLength(geometryStepLength) ;
 
   return geometryStepLength ;
 }

G4VParticleChange * MonopoleTransportation::AtRestDoIt	(	const G4Track &	,
		const G4Step &
	)

override

Definition at line 646 of file MonopoleTransportation.cc.

 {
   return nullptr;
 }

G4double MonopoleTransportation::AtRestGetPhysicalInteractionLength	(	const G4Track &	,
		G4ForceCondition *
	)

override

Definition at line 637 of file MonopoleTransportation.cc.

 { 
   return -1.0; 
 }

G4bool MonopoleTransportation::DoesGlobalFieldExist ( )

inlineprotected

Definition at line 188 of file MonopoleTransportation.h.

Referenced by StartTracking().

 {
   G4TransportationManager* transportMgr = 
     G4TransportationManager::GetTransportationManager();
   return transportMgr->GetFieldManager()->DoesFieldExist();
 }

void MonopoleTransportation::EnableShortStepOptimisation ( G4bool optimise = true )

inline

Definition at line 241 of file MonopoleTransportation.h.

References fShortStepOptimisation.

 { 
   fShortStepOptimisation=optimiseShortStep;
 }

G4double MonopoleTransportation::GetMaxEnergyKilled ( ) const

inline

Definition at line 230 of file MonopoleTransportation.h.

References fMaxEnergyKilled.

 {
   return fMaxEnergyKilled; 
 }

G4PropagatorInField * MonopoleTransportation::GetPropagatorInField ( )

inline

Definition at line 183 of file MonopoleTransportation.h.

References fFieldPropagator.

 {
   return fFieldPropagator;
 }

G4double MonopoleTransportation::GetSumEnergyKilled ( ) const

inline

Definition at line 235 of file MonopoleTransportation.h.

References fSumEnergyKilled.

 {
   return fSumEnergyKilled;
 }

G4double MonopoleTransportation::GetThresholdImportantEnergy ( ) const

inline

Definition at line 200 of file MonopoleTransportation.h.

References fThreshold_Important_Energy.

 { 
   return fThreshold_Important_Energy;
 } 

G4int MonopoleTransportation::GetThresholdTrials ( ) const

inline

Definition at line 205 of file MonopoleTransportation.h.

References fThresholdTrials.

 {
   return fThresholdTrials;
 }

G4double MonopoleTransportation::GetThresholdWarningEnergy ( ) const

inline

Definition at line 195 of file MonopoleTransportation.h.

References fThreshold_Warning_Energy.

 {
   return fThreshold_Warning_Energy;
 }

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

override

Definition at line 491 of file MonopoleTransportation.cc.

References fCurrentTouchableHandle, fGeometryLimitedStep, fieldMgrCMS, fLinearNavigator, fParticleChange, nullptr, CMSFieldManager::SetMonopoleTracking(), and funct::true.

 {
   G4TouchableHandle retCurrentTouchable ;   // The one to return
 
   fParticleChange.ProposeTrackStatus(track.GetTrackStatus()) ;
 
   // If the Step was determined by the volume boundary,
   // logically relocate the particle
   
   if(fGeometryLimitedStep)
   {  
     // fCurrentTouchable will now become the previous touchable, 
     // and what was the previous will be freed.
     // (Needed because the preStepPoint can point to the previous touchable)
 
     fLinearNavigator->SetGeometricallyLimitedStep() ;
     fLinearNavigator->
     LocateGlobalPointAndUpdateTouchableHandle( track.GetPosition(),
                                                track.GetMomentumDirection(),
                                                fCurrentTouchableHandle,
                                                true                      ) ;
     // Check whether the particle is out of the world volume 
     // If so it has exited and must be killed.
     //
     if( fCurrentTouchableHandle->GetVolume() == nullptr )
     {
        fParticleChange.ProposeTrackStatus( fStopAndKill ) ;
     }
     retCurrentTouchable = fCurrentTouchableHandle ;
     fParticleChange.SetTouchableHandle( fCurrentTouchableHandle ) ;
   }
   else                 // fGeometryLimitedStep  is false
   {                    
     // This serves only to move the Navigator's location
     //
     fLinearNavigator->LocateGlobalPointWithinVolume( track.GetPosition() ) ;
 
     // The value of the track's current Touchable is retained. 
     // (and it must be correct because we must use it below to
     // overwrite the (unset) one in particle change)
     //  It must be fCurrentTouchable too ??
     //
     fParticleChange.SetTouchableHandle( track.GetTouchableHandle() ) ;
     retCurrentTouchable = track.GetTouchableHandle() ;
   }         // endif ( fGeometryLimitedStep ) 
 
   const G4VPhysicalVolume* pNewVol = retCurrentTouchable->GetVolume() ;
   const G4Material* pNewMaterial   = nullptr ;
   const G4VSensitiveDetector* pNewSensitiveDetector   = nullptr ;
                                                                                        
   if( pNewVol != nullptr )
   {
     pNewMaterial= pNewVol->GetLogicalVolume()->GetMaterial();
     pNewSensitiveDetector= pNewVol->GetLogicalVolume()->GetSensitiveDetector();
   }
 
   fParticleChange.SetMaterialInTouchable( 
                      (G4Material *) pNewMaterial ) ;
   fParticleChange.SetSensitiveDetectorInTouchable( 
                      (G4VSensitiveDetector *) pNewSensitiveDetector ) ;
 
   const G4MaterialCutsCouple* pNewMaterialCutsCouple = nullptr;
   if( pNewVol != nullptr )
   {
     pNewMaterialCutsCouple=pNewVol->GetLogicalVolume()->GetMaterialCutsCouple();
   }
 
   if( pNewVol!=nullptr && pNewMaterialCutsCouple!=nullptr && 
       pNewMaterialCutsCouple->GetMaterial()!=pNewMaterial )
   {
     // for parametrized volume
     //
     pNewMaterialCutsCouple =
       G4ProductionCutsTable::GetProductionCutsTable()
                              ->GetMaterialCutsCouple(pNewMaterial,
                                pNewMaterialCutsCouple->GetProductionCuts());
   }
   fParticleChange.SetMaterialCutsCoupleInTouchable( pNewMaterialCutsCouple );
 
   // temporarily until Get/Set Material of ParticleChange, 
   // and StepPoint can be made const. 
   // Set the touchable in ParticleChange
   // this must always be done because the particle change always
   // uses this value to overwrite the current touchable pointer.
   //
   fParticleChange.SetTouchableHandle(retCurrentTouchable) ;
 
   // change to normal equation
   fieldMgrCMS->SetMonopoleTracking(false);
   
   return &fParticleChange ;
 }

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

override

Definition at line 481 of file MonopoleTransportation.cc.

Referenced by AlongStepDoIt().

 {  
   *pForceCond = Forced ; 
   return DBL_MAX ;  // was kInfinity ; but convention now is DBL_MAX
 }

void MonopoleTransportation::ResetKilledStatistics ( G4int report = 1 )

Definition at line 654 of file MonopoleTransportation.cc.

References fMaxEnergyKilled, fSumEnergyKilled, ecalTB2006H4_GenSimDigiReco_cfg::G4cout, and GeV.

 {
   if( report ) { 
     G4cout << " MonopoleTransportation: Statistics for looping particles " << G4endl;
     G4cout << "   Sum of energy of loopers killed: " <<  fSumEnergyKilled << G4endl;
     G4cout << "   Max energy of loopers killed: " <<  fMaxEnergyKilled << G4endl;
   } 
 
   fSumEnergyKilled= 0;
   fMaxEnergyKilled= -1.0*CLHEP::GeV;
 }

void MonopoleTransportation::SetPropagatorInField ( G4PropagatorInField * pFieldPropagator )

inline

Definition at line 178 of file MonopoleTransportation.h.

References fFieldPropagator.

 {
   fFieldPropagator= pFieldPropagator;
 }

void MonopoleTransportation::SetThresholdImportantEnergy ( G4double newEnImp )

inline

Definition at line 215 of file MonopoleTransportation.h.

References fThreshold_Important_Energy.

 {
   fThreshold_Important_Energy = newEnImp; 
 }

void MonopoleTransportation::SetThresholdTrials ( G4int newMaxTrials )

inline

Definition at line 220 of file MonopoleTransportation.h.

References fThresholdTrials.

 {
   fThresholdTrials = newMaxTrials; 
 }

void MonopoleTransportation::SetThresholdWarningEnergy ( G4double newEnWarn )

inline

Definition at line 210 of file MonopoleTransportation.h.

References fThreshold_Warning_Energy.

 {
   fThreshold_Warning_Energy= newEnWarn;
 }

void MonopoleTransportation::StartTracking ( G4Track * aTrack )

override

Definition at line 592 of file MonopoleTransportation.cc.

References DoesGlobalFieldExist(), fCurrentTouchableHandle, fFieldPropagator, fieldMgrCMS, fNoLooperTrials, fPreviousSafety, and fPreviousSftOrigin.

 {
   // initialise pointer
   if(!fieldMgrCMS) {
     G4FieldManager* fieldMgr = 
       fFieldPropagator->FindAndSetFieldManager(aTrack->GetVolume()); 
     fieldMgrCMS = static_cast<CMSFieldManager*>(fieldMgr);
   }
 
   G4VProcess::StartTracking(aTrack);
 
   // The actions here are those that were taken in AlongStepGPIL
   //   when track.GetCurrentStepNumber()==1
 
   // reset safety value and center
   //
   fPreviousSafety    = 0.0 ; 
   fPreviousSftOrigin = G4ThreeVector(0.,0.,0.) ;
   
   // reset looping counter -- for motion in field
   fNoLooperTrials= 0; 
   // Must clear this state .. else it depends on last track's value
 
   // ChordFinder reset internal state
   //
   if( DoesGlobalFieldExist() ) {
      fFieldPropagator->ClearPropagatorState();   
        // Resets all state of field propagator class (ONLY)
        //  including safety values (in case of overlaps and to wipe for first track).
 
      G4ChordFinder* chordF= fFieldPropagator->GetChordFinder();
      if( chordF ) chordF->ResetStepEstimate();
   }
 
   // Make sure to clear the chord finders of all fields (ie managers)
   G4FieldManagerStore* fieldMgrStore= G4FieldManagerStore::GetInstance();
   fieldMgrStore->ClearAllChordFindersState(); 
 
   // Update the current touchable handle  (from the track's)
   //
   fCurrentTouchableHandle = aTrack->GetTouchableHandle();
 }