[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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| 27 | // $Id: G4ParticleChangeForTransport.cc,v 1.19 2006/11/03 17:45:04 japost Exp $ |
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[850] | 28 | // GEANT4 tag $Name: HEAD $ |
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[826] | 29 | // |
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| 30 | // |
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| 31 | // -------------------------------------------------------------- |
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| 32 | // GEANT 4 class implementation file |
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| 33 | // |
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| 34 | // |
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| 35 | // |
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| 36 | // ------------------------------------------------------------ |
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| 37 | // Implemented for the new scheme 10 May. 1998 H.Kurahige |
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| 38 | // Correct tratment of fpNextTouchable 12 May. 1998 H.Kurashige |
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| 39 | // Change to the next volume only if energy>0 19 Jan. 2004 V.Ivanchenko |
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| 40 | // -------------------------------------------------------------- |
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| 41 | |
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| 42 | #include "G4ParticleChangeForTransport.hh" |
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| 43 | #include "G4TouchableHandle.hh" |
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| 44 | #include "G4Track.hh" |
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| 45 | #include "G4Step.hh" |
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| 46 | #include "G4TrackFastVector.hh" |
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| 47 | #include "G4DynamicParticle.hh" |
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| 48 | |
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| 49 | G4ParticleChangeForTransport::G4ParticleChangeForTransport():G4ParticleChange() |
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| 50 | { |
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| 51 | if (verboseLevel>2) { |
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| 52 | G4cout << "G4ParticleChangeForTransport::G4ParticleChangeForTransport() " << G4endl; |
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| 53 | } |
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| 54 | } |
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| 55 | |
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| 56 | G4ParticleChangeForTransport::~G4ParticleChangeForTransport() |
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| 57 | { |
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| 58 | if (verboseLevel>2) { |
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| 59 | G4cout << "G4ParticleChangeForTransport::~G4ParticleChangeForTransport() " << G4endl; |
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| 60 | } |
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| 61 | } |
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| 62 | |
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| 63 | |
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| 64 | G4ParticleChangeForTransport::G4ParticleChangeForTransport(const G4ParticleChangeForTransport &right):G4ParticleChange(right) |
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| 65 | { |
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| 66 | if (verboseLevel>0) { |
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| 67 | G4cout << "G4ParticleChangeForTransport:: copy constructor is called " << G4endl; |
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| 68 | } |
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| 69 | theTouchableHandle = right.theTouchableHandle; |
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| 70 | } |
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| 71 | |
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| 72 | // assignemnt operator |
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| 73 | G4ParticleChangeForTransport & G4ParticleChangeForTransport::operator=(const G4ParticleChangeForTransport &right) |
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| 74 | { |
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| 75 | if (verboseLevel>1) { |
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| 76 | G4cout << "G4ParticleChangeForTransport:: assignment operator is called " << G4endl; |
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| 77 | } |
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| 78 | if (this != &right) |
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| 79 | { |
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| 80 | theListOfSecondaries = right.theListOfSecondaries; |
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| 81 | theSizeOftheListOfSecondaries = right.theSizeOftheListOfSecondaries; |
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| 82 | theNumberOfSecondaries = right.theNumberOfSecondaries; |
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| 83 | theStatusChange = right.theStatusChange; |
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| 84 | theTouchableHandle = right.theTouchableHandle; |
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| 85 | theMaterialChange = right.theMaterialChange; |
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| 86 | theMaterialCutsCoupleChange = right.theMaterialCutsCoupleChange; |
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| 87 | theSensitiveDetectorChange = right.theSensitiveDetectorChange; |
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| 88 | theMomentumDirectionChange = right.theMomentumDirectionChange; |
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| 89 | thePolarizationChange = right.thePolarizationChange; |
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| 90 | thePositionChange = right.thePositionChange; |
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| 91 | theTimeChange = right.theTimeChange; |
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| 92 | theEnergyChange = right.theEnergyChange; |
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| 93 | theTrueStepLength = right.theTrueStepLength; |
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| 94 | theLocalEnergyDeposit = right.theLocalEnergyDeposit; |
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| 95 | theSteppingControlFlag = right.theSteppingControlFlag; |
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| 96 | } |
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| 97 | return *this; |
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| 98 | } |
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| 99 | |
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| 100 | //---------------------------------------------------------------- |
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| 101 | // methods for updating G4Step |
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| 102 | // |
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| 103 | |
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| 104 | G4Step* G4ParticleChangeForTransport::UpdateStepForAtRest(G4Step* pStep) |
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| 105 | { |
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| 106 | // Nothing happens for AtRestDoIt |
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| 107 | if (verboseLevel>0) { |
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| 108 | G4cout << "G4ParticleChangeForTransport::UpdateStepForAtRest() is called" << G4endl; |
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| 109 | G4cout << " Nothing happens for this method " << G4endl; |
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| 110 | } |
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| 111 | // Update the G4Step specific attributes |
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| 112 | return UpdateStepInfo(pStep); |
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| 113 | } |
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| 114 | |
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| 115 | |
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| 116 | G4Step* G4ParticleChangeForTransport::UpdateStepForAlongStep(G4Step* pStep) |
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| 117 | { |
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| 118 | // Smooth curved tajectory representation: let the Step know about |
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| 119 | // the auxiliary trajectory points (jacek 30/10/2002) |
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| 120 | pStep->SetPointerToVectorOfAuxiliaryPoints(fpVectorOfAuxiliaryPointsPointer); |
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| 121 | |
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| 122 | // copy of G4ParticleChange::UpdateStepForAlongStep |
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| 123 | // i.e. no effect for touchable |
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| 124 | |
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| 125 | // A physics process always calculates the final state of the |
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| 126 | // particle relative to the initial state at the beginning |
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| 127 | // of the Step, i.e., based on information of G4Track (or |
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| 128 | // equivalently the PreStepPoint). |
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| 129 | // So, the differences (delta) between these two states have to be |
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| 130 | // calculated and be accumulated in PostStepPoint. |
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| 131 | |
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| 132 | // Take note that the return type of GetMomentumChange is a |
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| 133 | // pointer to G4ThreeVector. Also it is a normalized |
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| 134 | // momentum vector. |
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| 135 | |
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| 136 | G4StepPoint* pPreStepPoint = pStep->GetPreStepPoint(); |
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| 137 | G4StepPoint* pPostStepPoint = pStep->GetPostStepPoint(); |
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| 138 | G4Track* aTrack = pStep->GetTrack(); |
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| 139 | G4double mass = aTrack->GetDynamicParticle()->GetMass(); |
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| 140 | |
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| 141 | // uodate kinetic energy |
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| 142 | // now assume that no energy change in transportation |
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| 143 | // However it is not true in electric fields |
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| 144 | // Case for changing energy will be implemented in future |
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| 145 | |
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| 146 | |
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| 147 | // update momentum direction and energy |
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| 148 | if (isMomentumChanged) { |
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| 149 | G4double energy; |
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| 150 | energy= pPostStepPoint->GetKineticEnergy() |
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| 151 | + (theEnergyChange - pPreStepPoint->GetKineticEnergy()); |
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| 152 | |
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| 153 | // calculate new momentum |
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| 154 | G4ThreeVector pMomentum = pPostStepPoint->GetMomentum() |
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| 155 | + ( CalcMomentum(theEnergyChange, theMomentumDirectionChange, mass) |
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| 156 | - pPreStepPoint->GetMomentum()); |
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| 157 | G4double tMomentum = pMomentum.mag(); |
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| 158 | G4ThreeVector direction(1.0,0.0,0.0); |
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| 159 | if( tMomentum > 0. ){ |
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| 160 | G4double inv_Momentum= 1.0 / tMomentum; |
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| 161 | direction= pMomentum * inv_Momentum; |
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| 162 | } |
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| 163 | pPostStepPoint->SetMomentumDirection(direction); |
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| 164 | pPostStepPoint->SetKineticEnergy( energy ); |
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| 165 | } |
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| 166 | |
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| 167 | // stop case should not occur |
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| 168 | //pPostStepPoint->SetMomentumDirection(G4ThreeVector(1., 0., 0.)); |
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| 169 | |
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| 170 | |
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| 171 | // update polarization |
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| 172 | pPostStepPoint->AddPolarization( thePolarizationChange |
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| 173 | - pPreStepPoint->GetPolarization()); |
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| 174 | |
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| 175 | // update position and time |
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| 176 | pPostStepPoint->AddPosition( thePositionChange |
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| 177 | - pPreStepPoint->GetPosition() ); |
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| 178 | pPostStepPoint->AddGlobalTime( theTimeChange |
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| 179 | - pPreStepPoint->GetGlobalTime()); |
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| 180 | pPostStepPoint->AddLocalTime( theTimeChange |
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| 181 | - pPreStepPoint->GetGlobalTime()); |
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| 182 | pPostStepPoint->AddProperTime( theProperTimeChange |
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| 183 | - pPreStepPoint->GetProperTime()); |
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| 184 | |
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| 185 | #ifdef G4VERBOSE |
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| 186 | if (debugFlag) CheckIt(*aTrack); |
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| 187 | #endif |
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| 188 | |
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| 189 | // Update the G4Step specific attributes |
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| 190 | //pStep->SetStepLength( theTrueStepLength ); |
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| 191 | // pStep->AddTotalEnergyDeposit( theLocalEnergyDeposit ); |
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| 192 | pStep->SetControlFlag( theSteppingControlFlag ); |
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| 193 | return pStep; |
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| 194 | // return UpdateStepInfo(pStep); |
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| 195 | } |
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| 196 | |
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| 197 | G4Step* G4ParticleChangeForTransport::UpdateStepForPostStep(G4Step* pStep) |
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| 198 | { |
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| 199 | // A physics process always calculates the final state of the particle |
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| 200 | |
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| 201 | // Change volume only if some kinetic energy remains |
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| 202 | G4StepPoint* pPostStepPoint = pStep->GetPostStepPoint(); |
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| 203 | if(pPostStepPoint->GetKineticEnergy() > 0.0) { |
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| 204 | |
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| 205 | // update next touchable |
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| 206 | // (touchable can be changed only at PostStepDoIt) |
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| 207 | pPostStepPoint->SetTouchableHandle( theTouchableHandle ); |
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| 208 | |
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| 209 | pPostStepPoint->SetMaterial( theMaterialChange ); |
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| 210 | pPostStepPoint->SetMaterialCutsCouple( theMaterialCutsCoupleChange ); |
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| 211 | pPostStepPoint->SetSensitiveDetector( theSensitiveDetectorChange ); |
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| 212 | } |
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| 213 | if( this->GetLastStepInVolume() ){ |
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| 214 | pStep->SetLastStepFlag(); |
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| 215 | }else{ |
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| 216 | pStep->ClearLastStepFlag(); |
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| 217 | } |
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| 218 | // It used to call base class's method |
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| 219 | // - but this would copy uninitialised data members |
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| 220 | // return G4ParticleChange::UpdateStepForPostStep(pStep); |
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| 221 | |
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| 222 | // Copying what the base class does would instead |
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| 223 | // - also not useful |
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| 224 | // return G4VParticleChange::UpdateStepInfo(pStep); |
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| 225 | |
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| 226 | return pStep; |
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| 227 | } |
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| 228 | |
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| 229 | //---------------------------------------------------------------- |
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| 230 | // methods for printing messages |
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| 231 | // |
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| 232 | |
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| 233 | void G4ParticleChangeForTransport::DumpInfo() const |
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| 234 | { |
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| 235 | // use base-class DumpInfo |
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| 236 | G4ParticleChange::DumpInfo(); |
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| 237 | |
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| 238 | G4cout.precision(3); |
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| 239 | G4cout << " Touchable (pointer) : " |
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| 240 | << std::setw(20) << theTouchableHandle() |
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| 241 | << G4endl; |
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| 242 | } |
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| 243 | |
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| 244 | |
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| 250 | |
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