Gabriele Cosmo
248 lines
9.2 KiB
C++
248 lines
9.2 KiB
C++
//
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// ********************************************************************
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// * License and Disclaimer *
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// * *
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// * The Geant4 software is copyright of the Copyright Holders of *
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// * the Geant4 Collaboration. It is provided under the terms and *
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// * conditions of the Geant4 Software License, included in the file *
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// * LICENSE and available at http://cern.ch/geant4/license . These *
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// * include a list of copyright holders. *
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// * *
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// * Neither the authors of this software system, nor their employing *
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// * institutes,nor the agencies providing financial support for this *
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// * work make any representation or warranty, express or implied, *
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// * regarding this software system or assume any liability for its *
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// * use. Please see the license in the file LICENSE and URL above *
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// * for the full disclaimer and the limitation of liability. *
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// * *
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// * This code implementation is the result of the scientific and *
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// * technical work of the GEANT4 collaboration. *
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// * By using, copying, modifying or distributing the software (or *
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// * any work based on the software) you agree to acknowledge its *
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// * use in resulting scientific publications, and indicate your *
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// * acceptance of all terms of the Geant4 Software license. *
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// ********************************************************************
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//
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// $Id: G4ITTransportation.hh 64374 2012-10-31 16:37:23Z gcosmo $
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//
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/// \brief This class is a slightly modified version of G4Transportation
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/// initially written by John Apostolakis and colleagues (1997)
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/// But it should use the exact same algorithm
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//
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// Original Author : John Apostolakis
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//
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// Contact : Mathieu Karamitros (kara (AT) cenbg . in2p3 . fr)
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//
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// WARNING : This class is released as a prototype.
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// It might strongly evolve or even disapear in the next releases.
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//
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// -------------------------------------------------------------------
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#ifndef G4ITTransportation_H
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#define G4ITTransportation_H
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#include <CLHEP/Units/SystemOfUnits.h>
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#include "G4IT.hh"
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#include "G4VITProcess.hh"
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#include "G4Track.hh"
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#include "G4Step.hh"
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#include "G4ParticleChangeForTransport.hh"
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class G4ITNavigator;
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//class G4Navigator;
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class G4SafetyHelper;
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class G4PropagatorInField;
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class G4ITTransportation : public G4VITProcess
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{
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// Concrete class that does the geometrical transport
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public: // with description
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G4ITTransportation(const G4String& aName = "ITTransportation",G4int verbosityLevel= 1);
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virtual ~G4ITTransportation();
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G4ITTransportation(const G4ITTransportation&);
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G4IT_ADD_CLONE(G4VITProcess, G4ITTransportation)
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virtual void BuildPhysicsTable(const G4ParticleDefinition&){;}
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virtual void ComputeStep(const G4Track&,
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const G4Step&,
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const double timeStep,
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double& spaceStep) ;
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virtual void StartTracking(G4Track* aTrack);
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// Give to the track a pointer to the transportation state
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//________________________________________________________
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public: // without description
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virtual G4double AtRestGetPhysicalInteractionLength(
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const G4Track& ,
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G4ForceCondition*
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)
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{
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return -1.0;
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}
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// No operation in AtRestDoIt.
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virtual G4VParticleChange* AtRestDoIt(
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const G4Track& ,
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const G4Step&
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)
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{
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return 0;
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}
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// No operation in AtRestDoIt.
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virtual G4double AlongStepGetPhysicalInteractionLength(
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const G4Track& track,
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G4double , // previousStepSize
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G4double currentMinimumStep,
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G4double& currentSafety,
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G4GPILSelection* selection);
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virtual G4double PostStepGetPhysicalInteractionLength(
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const G4Track& , // track
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G4double , // previousStepSize
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G4ForceCondition* pForceCond);
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virtual G4VParticleChange* AlongStepDoIt( const G4Track& track,
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const G4Step& stepData );
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virtual G4VParticleChange* PostStepDoIt( const G4Track& track,
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const G4Step& ) ;
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//________________________________________________________
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// inline virtual G4double GetTransportationTime() ;
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G4PropagatorInField* GetPropagatorInField();
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void SetPropagatorInField( G4PropagatorInField* pFieldPropagator);
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// Access/set the assistant class that Propagate in a Field.
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inline void SetVerboseLevel( G4int verboseLevel );
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inline G4int GetVerboseLevel() const;
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// Level of warnings regarding eg energy conservation
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// in field integration.
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inline G4double GetThresholdWarningEnergy() const;
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inline G4double GetThresholdImportantEnergy() const;
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inline G4int GetThresholdTrials() const;
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inline void SetThresholdWarningEnergy( G4double newEnWarn );
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inline void SetThresholdImportantEnergy( G4double newEnImp );
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inline void SetThresholdTrials(G4int newMaxTrials );
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// Get/Set parameters for killing loopers:
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// Above 'important' energy a 'looping' particle in field will
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// *NOT* be abandoned, except after fThresholdTrials attempts.
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// Below Warning energy, no verbosity for looping particles is issued
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inline G4double GetMaxEnergyKilled() const;
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inline G4double GetSumEnergyKilled() const;
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inline void ResetKilledStatistics( G4int report = 1);
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// Statistics for tracks killed (currently due to looping in field)
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inline void EnableShortStepOptimisation(G4bool optimise=true);
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// Whether short steps < safety will avoid to call Navigator (if field=0)
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protected :
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//________________________________________________________________
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// Protected methods
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G4bool DoesGlobalFieldExist();
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// Checks whether a field exists for the "global" field manager.
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//________________________________________________________________
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// Process information
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struct G4ITTransportationState : public G4ProcessState
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{
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public :
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G4ITTransportationState();
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virtual ~G4ITTransportationState();
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G4ThreeVector fTransportEndPosition;
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G4ThreeVector fTransportEndMomentumDir;
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G4double fTransportEndKineticEnergy;
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G4ThreeVector fTransportEndSpin;
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G4bool fMomentumChanged;
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G4bool fEnergyChanged;
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G4bool fEndGlobalTimeComputed;
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G4double fCandidateEndGlobalTime;
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G4bool fParticleIsLooping;
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// The particle's state after this Step, Store for DoIt
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G4TouchableHandle fCurrentTouchableHandle;
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G4bool fGeometryLimitedStep;
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// Flag to determine whether a boundary was reached.
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G4ThreeVector fPreviousSftOrigin;
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G4double fPreviousSafety;
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// Remember last safety origin & value.
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// Counter for steps in which particle reports 'looping',
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// if it is above 'Important' Energy
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G4int fNoLooperTrials;
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// G4bool fFieldExists;
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// Whether a magnetic field exists ...
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// A data member for this is problematic: it is useful only if it
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// can be initialised and updated -- and a scheme is not yet possible.
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G4double endpointDistance;
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};
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G4ITTransportationState* const & fTransportationState;
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//________________________________________________________________
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// Informations relative to the process only (meaning no information
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// relative to the treated particle)
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G4ITNavigator* fLinearNavigator;
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G4PropagatorInField* fFieldPropagator;
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// The Propagators used to transport the particle
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// static const G4TouchableHandle nullTouchableHandle; // Points to (G4VTouchable*) 0
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G4ParticleChangeForTransport fParticleChange;
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// New ParticleChange
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// Thresholds for looping particles:
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//
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G4double fThreshold_Warning_Energy; // Warn above this energy
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G4double fThreshold_Important_Energy; // Hesitate above this
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G4int fThresholdTrials; // for this no of trials
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// Above 'important' energy a 'looping' particle in field will
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// *NOT* be abandoned, except after fThresholdTrials attempts.
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G4double fUnimportant_Energy;
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// Below this energy, no verbosity for looping particles is issued
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// Statistics for tracks abandoned
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G4double fSumEnergyKilled;
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G4double fMaxEnergyKilled;
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// Whether to avoid calling G4Navigator for short step ( < safety)
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// If using it, the safety estimate for endpoint will likely be smaller.
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G4bool fShortStepOptimisation;
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G4SafetyHelper* fpSafetyHelper; // To pass it the safety value obtained
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// Verbosity
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G4int fVerboseLevel;
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// Verbosity level for warnings
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// eg about energy non-conservation in magnetic field.
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void SetInstantiateProcessState(G4bool flag)
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{ fInstantiateProcessState = flag; }
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G4bool InstantiateProcessState() { return fInstantiateProcessState; }
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private :
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G4bool fInstantiateProcessState;
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G4ITTransportation& operator=(const G4ITTransportation&);
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};
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#include "G4ITTransportation.icc"
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#endif // G4ITTransportation_H
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