[826] | 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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[1340] | 27 | // $Id: G4Track.cc,v 1.35 2010/09/21 00:33:05 kurasige Exp $ |
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| 28 | // GEANT4 tag $Name: track-V09-03-09 $ |
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[826] | 29 | // |
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| 30 | // |
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| 31 | //--------------------------------------------------------------- |
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| 32 | // |
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| 33 | // G4Track.cc |
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| 34 | // |
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| 35 | //--------------------------------------------------------------- |
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| 36 | // Add copy constructor Hisaya Feb. 07 01 |
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| 37 | // Fix GetVelocity Hisaya Feb. 17 01 |
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| 38 | // Modification for G4TouchableHandle 22 Oct. 2001 R.Chytracek// |
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| 39 | // Fix GetVelocity (bug report #741) Horton-Smith Apr 14 2005 |
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[1196] | 40 | // Remove massless check in GetVelocity 02 Apr. 09 H.Kurashige |
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[826] | 41 | |
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| 42 | #include "G4Track.hh" |
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[1340] | 43 | #include "G4ParticleTable.hh" |
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[826] | 44 | |
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| 45 | G4Allocator<G4Track> aTrackAllocator; |
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| 46 | |
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[1340] | 47 | G4PhysicsLogVector* G4Track::velTable = 0; |
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| 48 | |
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| 49 | const G4double G4Track::maxT = 100.0; |
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| 50 | const G4double G4Track::minT = 0.0001; |
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| 51 | |
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[826] | 52 | /////////////////////////////////////////////////////////// |
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| 53 | G4Track::G4Track(G4DynamicParticle* apValueDynamicParticle, |
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| 54 | G4double aValueTime, |
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| 55 | const G4ThreeVector& aValuePosition) |
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| 56 | /////////////////////////////////////////////////////////// |
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| 57 | : fCurrentStepNumber(0), fPosition(aValuePosition), |
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| 58 | fGlobalTime(aValueTime), fLocalTime(0.), |
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| 59 | fTrackLength(0.), |
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| 60 | fParentID(0), fTrackID(0), |
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| 61 | fpDynamicParticle(apValueDynamicParticle), |
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| 62 | fTrackStatus(fAlive), |
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| 63 | fBelowThreshold(false), fGoodForTracking(false), |
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| 64 | fStepLength(0.0), fWeight(1.0), |
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| 65 | fpStep(0), |
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| 66 | fVtxKineticEnergy(0.0), |
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| 67 | fpLVAtVertex(0), fpCreatorProcess(0), |
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[1340] | 68 | fpUserInformation(0), |
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| 69 | prev_mat(0), groupvel(0), |
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| 70 | prev_velocity(0.0), prev_momentum(0.0), |
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| 71 | is_OpticalPhoton(false) |
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[826] | 72 | { |
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[1340] | 73 | static G4bool isFirstTime = true; |
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| 74 | static G4ParticleDefinition* fOpticalPhoton =0; |
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| 75 | if ( isFirstTime ) { |
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| 76 | isFirstTime = false; |
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| 77 | // set fOpticalPhoton |
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| 78 | fOpticalPhoton = G4ParticleTable::GetParticleTable()->FindParticle("opticalphoton"); |
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| 79 | } |
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| 80 | // check if the particle type is Optical Photon |
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| 81 | is_OpticalPhoton = (fpDynamicParticle->GetDefinition() == fOpticalPhoton); |
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| 82 | |
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| 83 | if (velTable==0) PrepareVelocityTable(); |
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[826] | 84 | } |
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| 85 | |
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| 86 | ////////////////// |
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| 87 | G4Track::G4Track() |
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| 88 | ////////////////// |
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| 89 | : fCurrentStepNumber(0), |
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| 90 | fGlobalTime(0), fLocalTime(0.), |
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| 91 | fTrackLength(0.), |
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| 92 | fParentID(0), fTrackID(0), |
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| 93 | fpDynamicParticle(0), |
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| 94 | fTrackStatus(fAlive), |
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| 95 | fBelowThreshold(false), fGoodForTracking(false), |
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| 96 | fStepLength(0.0), fWeight(1.0), |
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| 97 | fpStep(0), |
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| 98 | fVtxKineticEnergy(0.0), |
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| 99 | fpLVAtVertex(0), fpCreatorProcess(0), |
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[1340] | 100 | fpUserInformation(0), |
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| 101 | prev_mat(0), groupvel(0), |
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| 102 | prev_velocity(0.0), prev_momentum(0.0), |
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| 103 | is_OpticalPhoton(false) |
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[826] | 104 | { |
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| 105 | } |
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| 106 | ////////////////// |
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| 107 | G4Track::G4Track(const G4Track& right) |
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| 108 | ////////////////// |
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[1340] | 109 | : fCurrentStepNumber(0), |
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| 110 | fGlobalTime(0), fLocalTime(0.), |
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| 111 | fTrackLength(0.), |
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| 112 | fParentID(0), fTrackID(0), |
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| 113 | fpDynamicParticle(0), |
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| 114 | fTrackStatus(fAlive), |
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| 115 | fBelowThreshold(false), fGoodForTracking(false), |
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| 116 | fStepLength(0.0), fWeight(1.0), |
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| 117 | fpStep(0), |
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| 118 | fVtxKineticEnergy(0.0), |
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| 119 | fpLVAtVertex(0), fpCreatorProcess(0), |
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| 120 | fpUserInformation(0), |
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| 121 | prev_mat(0), groupvel(0), |
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| 122 | prev_velocity(0.0), prev_momentum(0.0), |
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| 123 | is_OpticalPhoton(false) |
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[826] | 124 | { |
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| 125 | *this = right; |
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| 126 | } |
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| 127 | |
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| 128 | /////////////////// |
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| 129 | G4Track::~G4Track() |
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| 130 | /////////////////// |
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| 131 | { |
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| 132 | delete fpDynamicParticle; |
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| 133 | delete fpUserInformation; |
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| 134 | } |
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| 135 | |
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| 136 | ////////////////// |
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| 137 | G4Track & G4Track::operator=(const G4Track &right) |
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| 138 | ////////////////// |
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| 139 | { |
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| 140 | if (this != &right) { |
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| 141 | fPosition = right.fPosition; |
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| 142 | fGlobalTime = right.fGlobalTime; |
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| 143 | fLocalTime = right.fLocalTime; |
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| 144 | fTrackLength = right.fTrackLength; |
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| 145 | fWeight = right.fWeight; |
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| 146 | fStepLength = right.fStepLength; |
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| 147 | |
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| 148 | // Track ID (and Parent ID) is not copied and set to zero for new track |
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| 149 | fTrackID = 0; |
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| 150 | fParentID =0; |
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| 151 | |
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| 152 | // CurrentStepNumber is set to be 0 |
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| 153 | fCurrentStepNumber = 0; |
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| 154 | |
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| 155 | // dynamic particle information |
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| 156 | fpDynamicParticle = new G4DynamicParticle(*(right.fpDynamicParticle)); |
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| 157 | |
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| 158 | // track status and flags for tracking |
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| 159 | fTrackStatus = right.fTrackStatus; |
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| 160 | fBelowThreshold = right.fBelowThreshold; |
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| 161 | fGoodForTracking = right.fGoodForTracking; |
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| 162 | |
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| 163 | // Step information (Step Length, Step Number, pointer to the Step,) |
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| 164 | // are not copied |
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| 165 | fpStep=0; |
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| 166 | |
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| 167 | // vertex information |
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| 168 | fVtxPosition = right.fVtxPosition; |
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| 169 | fpLVAtVertex = right.fpLVAtVertex; |
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| 170 | fVtxKineticEnergy = right.fVtxKineticEnergy; |
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| 171 | fVtxMomentumDirection = right.fVtxMomentumDirection; |
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| 172 | |
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| 173 | // CreatorProcess and UserInformation are not copied |
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| 174 | fpCreatorProcess = 0; |
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| 175 | fpUserInformation = 0; |
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[1340] | 176 | |
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| 177 | prev_mat = right.prev_mat; |
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| 178 | groupvel = right.groupvel; |
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| 179 | prev_velocity = right.prev_velocity; |
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| 180 | prev_momentum = right.prev_momentum; |
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| 181 | |
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| 182 | is_OpticalPhoton = right.is_OpticalPhoton; |
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| 183 | |
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[826] | 184 | } |
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| 185 | return *this; |
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| 186 | } |
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| 187 | |
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| 188 | /////////////////// |
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| 189 | void G4Track::CopyTrackInfo(const G4Track& right) |
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| 190 | ////////////////// |
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| 191 | { |
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| 192 | *this = right; |
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| 193 | } |
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| 194 | |
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| 195 | /////////////////// |
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| 196 | G4double G4Track::GetVelocity() const |
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| 197 | /////////////////// |
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| 198 | { |
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[1340] | 199 | |
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| 200 | G4double velocity = c_light ; |
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[826] | 201 | |
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| 202 | G4double mass = fpDynamicParticle->GetMass(); |
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| 203 | |
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[1196] | 204 | // special case for photons |
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[1340] | 205 | if ( is_OpticalPhoton ) { |
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[826] | 206 | |
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[1196] | 207 | G4Material* mat=0; |
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| 208 | G4bool update_groupvel = false; |
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| 209 | if ( this->GetStep() ){ |
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| 210 | mat= this->GetMaterial(); // Fix for repeated volumes |
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| 211 | }else{ |
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| 212 | if (fpTouchable!=0){ |
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| 213 | mat=fpTouchable->GetVolume()->GetLogicalVolume()->GetMaterial(); |
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| 214 | } |
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| 215 | } |
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| 216 | // check if previous step is in the same volume |
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[1340] | 217 | // and get new GROUPVELOCITY table if necessary |
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| 218 | if ((mat != 0) && ((mat != prev_mat)||(groupvel==0))) { |
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[1196] | 219 | groupvel = 0; |
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| 220 | if(mat->GetMaterialPropertiesTable() != 0) |
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| 221 | groupvel = mat->GetMaterialPropertiesTable()->GetProperty("GROUPVEL"); |
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| 222 | update_groupvel = true; |
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| 223 | } |
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| 224 | prev_mat = mat; |
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| 225 | |
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| 226 | if (groupvel != 0 ) { |
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| 227 | // light velocity = c/(rindex+d(rindex)/d(log(E_phot))) |
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| 228 | // values stored in GROUPVEL material properties vector |
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| 229 | velocity = prev_velocity; |
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[826] | 230 | |
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[1196] | 231 | // check if momentum is same as in the previous step |
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| 232 | // and calculate group velocity if necessary |
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[1340] | 233 | G4double current_momentum = fpDynamicParticle->GetTotalMomentum(); |
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| 234 | if( update_groupvel || (current_momentum != prev_momentum) ) { |
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[1196] | 235 | velocity = |
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[1340] | 236 | groupvel->GetProperty(current_momentum); |
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| 237 | prev_velocity = velocity; |
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| 238 | prev_momentum = current_momentum; |
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[1196] | 239 | } |
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| 240 | } |
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[826] | 241 | |
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| 242 | } else { |
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[1340] | 243 | // particles other than optical photon |
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[1196] | 244 | if (mass<DBL_MIN) { |
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[1340] | 245 | // Zero Mass |
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[1196] | 246 | velocity = c_light; |
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| 247 | } else { |
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[1340] | 248 | G4double T = (fpDynamicParticle->GetKineticEnergy())/mass; |
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| 249 | if (T > maxT) { |
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| 250 | velocity = c_light; |
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| 251 | } else if (T<DBL_MIN) { |
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| 252 | velocity =0.; |
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| 253 | } else if (T<minT) { |
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| 254 | velocity = c_light*std::sqrt(T*(T+2.))/(T+1.0); |
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| 255 | } else { |
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| 256 | velocity = velTable->Value(T); |
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| 257 | } |
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[1196] | 258 | } |
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[1340] | 259 | |
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[826] | 260 | } |
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| 261 | |
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| 262 | return velocity ; |
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| 263 | } |
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[1340] | 264 | |
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| 265 | /////////////////// |
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| 266 | void G4Track::PrepareVelocityTable() |
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| 267 | /////////////////// |
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| 268 | { |
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| 269 | const G4int NBIN=300; |
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| 270 | velTable = new G4PhysicsLogVector(minT, maxT, NBIN); |
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| 271 | for (G4int i=0; i<=NBIN; i++){ |
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| 272 | G4double T = velTable->Energy(i); |
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| 273 | velTable->PutValue(i, c_light*std::sqrt(T*(T+2.))/(T+1.0) ); |
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| 274 | } |
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| 275 | return; |
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| 276 | } |
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