[819] | 1 | // |
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| 2 | // ******************************************************************** |
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| 3 | // * License and Disclaimer * |
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| 4 | // * * |
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| 5 | // * The Geant4 software is copyright of the Copyright Holders of * |
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| 6 | // * the Geant4 Collaboration. It is provided under the terms and * |
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| 7 | // * conditions of the Geant4 Software License, included in the file * |
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| 8 | // * LICENSE and available at http://cern.ch/geant4/license . These * |
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| 9 | // * include a list of copyright holders. * |
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| 10 | // * * |
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| 11 | // * Neither the authors of this software system, nor their employing * |
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| 12 | // * institutes,nor the agencies providing financial support for this * |
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| 13 | // * work make any representation or warranty, express or implied, * |
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| 14 | // * regarding this software system or assume any liability for its * |
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| 15 | // * use. Please see the license in the file LICENSE and URL above * |
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| 16 | // * for the full disclaimer and the limitation of liability. * |
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| 17 | // * * |
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| 18 | // * This code implementation is the result of the scientific and * |
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| 19 | // * technical work of the GEANT4 collaboration. * |
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| 20 | // * By using, copying, modifying or distributing the software (or * |
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| 21 | // * any work based on the software) you agree to acknowledge its * |
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| 22 | // * use in resulting scientific publications, and indicate your * |
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| 23 | // * acceptance of all terms of the Geant4 Software license. * |
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| 24 | // ******************************************************************** |
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| 25 | // |
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| 26 | // |
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| 27 | // $Id: G4Transportation.hh,v 1.16 2007/11/08 17:59:38 japost Exp $ |
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| 28 | // GEANT4 tag $Name: geant4-09-01-patch-02 $ |
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| 29 | // |
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| 30 | // |
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| 31 | // ------------------------------------------------------------ |
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| 32 | // GEANT 4 include file implementation |
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| 33 | // ------------------------------------------------------------ |
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| 34 | // |
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| 35 | // Class description: |
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| 36 | // |
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| 37 | // G4Transportation is a process responsible for the transportation of |
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| 38 | // a particle, i.e. the geometrical propagation encountering the |
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| 39 | // geometrical sub-volumes of the detectors. |
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| 40 | // It is also tasked with part of updating the "safety". |
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| 41 | |
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| 42 | // ======================================================================= |
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| 43 | // Created: 19 March 1997, J. Apostolakis |
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| 44 | // ======================================================================= |
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| 45 | #ifndef G4Transportation_hh |
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| 46 | #define G4Transportation_hh 1 |
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| 47 | |
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| 48 | #include "G4VProcess.hh" |
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| 49 | #include "G4FieldManager.hh" |
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| 50 | |
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| 51 | #include "G4Navigator.hh" |
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| 52 | #include "G4TransportationManager.hh" |
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| 53 | #include "G4PropagatorInField.hh" |
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| 54 | #include "G4Track.hh" |
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| 55 | #include "G4Step.hh" |
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| 56 | #include "G4ParticleChangeForTransport.hh" |
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| 57 | |
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| 58 | class G4Transportation : public G4VProcess |
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| 59 | { |
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| 60 | // Concrete class that does the geometrical transport |
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| 61 | |
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| 62 | public: // with description |
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| 63 | |
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| 64 | G4Transportation( G4int verbosityLevel= 1); |
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| 65 | ~G4Transportation(); |
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| 66 | |
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| 67 | G4double AlongStepGetPhysicalInteractionLength( |
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| 68 | const G4Track& track, |
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| 69 | G4double previousStepSize, |
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| 70 | G4double currentMinimumStep, |
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| 71 | G4double& currentSafety, |
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| 72 | G4GPILSelection* selection |
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| 73 | ); |
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| 74 | |
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| 75 | G4VParticleChange* AlongStepDoIt( |
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| 76 | const G4Track& track, |
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| 77 | const G4Step& stepData |
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| 78 | ); |
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| 79 | |
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| 80 | G4VParticleChange* PostStepDoIt( |
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| 81 | const G4Track& track, |
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| 82 | const G4Step& stepData |
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| 83 | ); |
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| 84 | // Responsible for the relocation. |
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| 85 | |
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| 86 | G4double PostStepGetPhysicalInteractionLength( |
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| 87 | const G4Track& , |
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| 88 | G4double previousStepSize, |
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| 89 | G4ForceCondition* pForceCond |
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| 90 | ); |
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| 91 | // Forces the PostStepDoIt action to be called, |
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| 92 | // but does not limit the step. |
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| 93 | |
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| 94 | G4PropagatorInField* GetPropagatorInField(); |
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| 95 | void SetPropagatorInField( G4PropagatorInField* pFieldPropagator); |
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| 96 | // Access/set the assistant class that Propagate in a Field. |
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| 97 | |
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| 98 | inline void SetVerboseLevel( G4int verboseLevel ); |
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| 99 | inline G4int GetVerboseLevel() const; |
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| 100 | // Level of warnings regarding eg energy conservation |
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| 101 | // in field integration. |
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| 102 | |
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| 103 | inline G4double GetThresholdWarningEnergy() const; |
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| 104 | inline G4double GetThresholdImportantEnergy() const; |
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| 105 | inline G4int GetThresholdTrials() const; |
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| 106 | |
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| 107 | inline void SetThresholdWarningEnergy( G4double newEnWarn ); |
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| 108 | inline void SetThresholdImportantEnergy( G4double newEnImp ); |
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| 109 | inline void SetThresholdTrials(G4int newMaxTrials ); |
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| 110 | |
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| 111 | // Get/Set parameters for killing loopers: |
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| 112 | // Above 'important' energy a 'looping' particle in field will |
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| 113 | // *NOT* be abandoned, except after fThresholdTrials attempts. |
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| 114 | // Below Warning energy, no verbosity for looping particles is issued |
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| 115 | |
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| 116 | inline G4double GetMaxEnergyKilled() const; |
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| 117 | inline G4double GetSumEnergyKilled() const; |
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| 118 | inline void ResetKilledStatistics( G4int report = 1); |
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| 119 | // Statistics for tracks killed (currently due to looping in field) |
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| 120 | |
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| 121 | inline void EnableShortStepOptimisation(G4bool optimise=true); |
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| 122 | // Whether short steps < safety will avoid to call Navigator (if field=0) |
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| 123 | |
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| 124 | public: // without description |
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| 125 | |
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| 126 | G4double AtRestGetPhysicalInteractionLength( |
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| 127 | const G4Track& , |
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| 128 | G4ForceCondition* |
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| 129 | ) { return -1.0; }; |
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| 130 | // No operation in AtRestDoIt. |
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| 131 | |
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| 132 | G4VParticleChange* AtRestDoIt( |
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| 133 | const G4Track& , |
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| 134 | const G4Step& |
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| 135 | ) {return 0;}; |
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| 136 | // No operation in AtRestDoIt. |
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| 137 | |
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| 138 | void StartTracking(G4Track* aTrack); |
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| 139 | // Reset state for new (potentially resumed) track |
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| 140 | |
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| 141 | protected: |
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| 142 | |
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| 143 | G4bool DoesGlobalFieldExist(); |
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| 144 | // Checks whether a field exists for the "global" field manager. |
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| 145 | |
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| 146 | private: |
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| 147 | |
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| 148 | G4Navigator* fLinearNavigator; |
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| 149 | G4PropagatorInField* fFieldPropagator; |
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| 150 | // The Propagators used to transport the particle |
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| 151 | |
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| 152 | // G4FieldManager* fGlobalFieldMgr; // Used MagneticField CC |
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| 153 | // Field Manager for the whole Detector |
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| 154 | |
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| 155 | G4ThreeVector fTransportEndPosition; |
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| 156 | G4ThreeVector fTransportEndMomentumDir; |
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| 157 | G4double fTransportEndKineticEnergy; |
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| 158 | G4ThreeVector fTransportEndSpin; |
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| 159 | G4bool fMomentumChanged; |
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| 160 | G4bool fEnergyChanged; |
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| 161 | G4bool fEndGlobalTimeComputed; |
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| 162 | G4double fCandidateEndGlobalTime; |
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| 163 | // The particle's state after this Step, Store for DoIt |
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| 164 | |
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| 165 | G4bool fParticleIsLooping; |
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| 166 | |
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| 167 | G4TouchableHandle fCurrentTouchableHandle; |
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| 168 | |
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| 169 | // G4bool fFieldExists; |
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| 170 | // Whether a magnetic field exists ... |
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| 171 | // A data member for this is problematic: it is useful only if it |
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| 172 | // can be initialised and updated -- and a scheme is not yet possible. |
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| 173 | |
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| 174 | G4bool fGeometryLimitedStep; |
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| 175 | // Flag to determine whether a boundary was reached. |
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| 176 | |
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| 177 | G4ThreeVector fPreviousSftOrigin; |
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| 178 | G4double fPreviousSafety; |
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| 179 | // Remember last safety origin & value. |
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| 180 | |
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| 181 | G4ParticleChangeForTransport fParticleChange; |
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| 182 | // New ParticleChange |
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| 183 | |
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| 184 | G4double endpointDistance; |
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| 185 | |
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| 186 | // Thresholds for looping particles: |
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| 187 | // |
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| 188 | G4double fThreshold_Warning_Energy; // Warn above this energy |
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| 189 | G4double fThreshold_Important_Energy; // Hesitate above this |
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| 190 | G4int fThresholdTrials; // for this no of trials |
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| 191 | // Above 'important' energy a 'looping' particle in field will |
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| 192 | // *NOT* be abandoned, except after fThresholdTrials attempts. |
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| 193 | G4double fUnimportant_Energy; |
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| 194 | // Below this energy, no verbosity for looping particles is issued |
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| 195 | |
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| 196 | // Counter for steps in which particle reports 'looping', |
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| 197 | // if it is above 'Important' Energy |
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| 198 | G4int fNoLooperTrials; |
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| 199 | // Statistics for tracks abandoned |
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| 200 | G4double fSumEnergyKilled; |
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| 201 | G4double fMaxEnergyKilled; |
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| 202 | |
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| 203 | // Whether to avoid calling G4Navigator for short step ( < safety) |
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| 204 | // If using it, the safety estimate for endpoint will likely be smaller. |
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| 205 | G4bool fShortStepOptimisation; |
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| 206 | |
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| 207 | // Verbosity |
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| 208 | G4int fVerboseLevel; |
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| 209 | // Verbosity level for warnings |
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| 210 | // eg about energy non-conservation in magnetic field. |
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| 211 | }; |
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| 212 | |
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| 213 | #include "G4Transportation.icc" |
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| 214 | |
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| 215 | #endif |
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