[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: G4FastStep.cc,v 1.16 2006/06/29 21:09:32 gunter Exp $ |
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[963] | 28 | // GEANT4 tag $Name: geant4-09-02-ref-02 $ |
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[819] | 29 | // |
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| 30 | //--------------------------------------------------------------- |
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| 31 | // |
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| 32 | // G4FastStep.cc |
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| 33 | // |
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| 34 | // Description: |
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| 35 | // Encapsulates a G4ParticleChange and insure friendly interface |
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| 36 | // methods to manage the primary/secondaries final state for |
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| 37 | // Fast Simulation Models. |
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| 38 | // |
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| 39 | // History: |
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| 40 | // Oct 97: Verderi && MoraDeFreitas - First Implementation. |
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| 41 | // Apr 98: MoraDeFreitas - G4FastStep becomes the G4ParticleChange |
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| 42 | // for the Fast Simulation Process. |
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| 43 | // |
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| 44 | //--------------------------------------------------------------- |
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| 45 | |
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| 46 | #include "G4FastStep.hh" |
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| 47 | #include "G4Track.hh" |
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| 48 | #include "G4Step.hh" |
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| 49 | #include "G4TrackFastVector.hh" |
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| 50 | #include "G4DynamicParticle.hh" |
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| 51 | |
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| 52 | void G4FastStep::Initialize(const G4FastTrack& fastTrack) |
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| 53 | { |
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| 54 | // keeps the fastTrack reference |
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| 55 | fFastTrack=&fastTrack; |
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| 56 | |
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| 57 | // currentTrack will be used to Initialize the other data members |
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| 58 | const G4Track& currentTrack = *(fFastTrack->GetPrimaryTrack()); |
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| 59 | |
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| 60 | // use base class's method at first |
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| 61 | G4VParticleChange::Initialize(currentTrack); |
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| 62 | |
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| 63 | // set Energy/Momentum etc. equal to those of the parent particle |
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| 64 | const G4DynamicParticle* pParticle = currentTrack.GetDynamicParticle(); |
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| 65 | theEnergyChange = pParticle->GetKineticEnergy(); |
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| 66 | theMomentumChange = pParticle->GetMomentumDirection(); |
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| 67 | thePolarizationChange = pParticle->GetPolarization(); |
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| 68 | theProperTimeChange = pParticle->GetProperTime(); |
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| 69 | |
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| 70 | // set Position/Time etc. equal to those of the parent track |
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| 71 | thePositionChange = currentTrack.GetPosition(); |
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| 72 | theTimeChange = currentTrack.GetGlobalTime(); |
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| 73 | |
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| 74 | // switch off stepping hit invokation by default: |
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| 75 | theSteppingControlFlag = AvoidHitInvocation; |
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| 76 | |
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| 77 | // event biasing weigth: |
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| 78 | theWeightChange = currentTrack.GetWeight(); |
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| 79 | } |
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| 80 | |
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| 81 | //---------------------------------------- |
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| 82 | // -- Set the StopAndKilled signal |
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| 83 | // -- and put kinetic energy to 0.0. in the |
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| 84 | // -- G4ParticleChange. |
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| 85 | //---------------------------------------- |
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| 86 | void G4FastStep::KillPrimaryTrack() |
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| 87 | { |
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| 88 | SetPrimaryTrackFinalKineticEnergy(0.) ; |
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| 89 | ProposeTrackStatus(fStopAndKill) ; |
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| 90 | } |
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| 91 | |
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| 92 | //-------------------- |
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| 93 | // |
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| 94 | //-------------------- |
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| 95 | void |
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| 96 | G4FastStep:: |
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| 97 | ProposePrimaryTrackFinalPosition(const G4ThreeVector &position, |
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| 98 | G4bool localCoordinates) |
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| 99 | { |
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| 100 | // Compute the position coordinate in global |
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| 101 | // reference system if needed ... |
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| 102 | G4ThreeVector globalPosition = position; |
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| 103 | if (localCoordinates) |
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| 104 | globalPosition = fFastTrack->GetInverseAffineTransformation()-> |
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| 105 | TransformPoint(position); |
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| 106 | // ...and feed the globalPosition: |
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| 107 | thePositionChange = globalPosition; |
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| 108 | } |
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| 109 | |
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| 110 | void |
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| 111 | G4FastStep:: |
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| 112 | SetPrimaryTrackFinalPosition(const G4ThreeVector &position, |
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| 113 | G4bool localCoordinates) |
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| 114 | { |
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| 115 | ProposePrimaryTrackFinalPosition(position, localCoordinates); |
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| 116 | } |
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| 117 | |
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| 118 | //-------------------- |
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| 119 | // |
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| 120 | //-------------------- |
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| 121 | void |
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| 122 | G4FastStep:: |
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| 123 | ProposePrimaryTrackFinalMomentumDirection(const G4ThreeVector &momentum, |
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| 124 | G4bool localCoordinates) |
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| 125 | { |
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| 126 | // Compute the momentum in global reference |
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| 127 | // system if needed ... |
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| 128 | G4ThreeVector globalMomentum = momentum; |
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| 129 | if (localCoordinates) |
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| 130 | globalMomentum = fFastTrack->GetInverseAffineTransformation()-> |
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| 131 | TransformAxis(momentum); |
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| 132 | // ...and feed the globalMomentum (ensuring unitarity) |
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| 133 | SetMomentumChange(globalMomentum.unit()); |
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| 134 | } |
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| 135 | |
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| 136 | void |
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| 137 | G4FastStep:: |
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| 138 | SetPrimaryTrackFinalMomentum(const G4ThreeVector &momentum, |
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| 139 | G4bool localCoordinates) |
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| 140 | { |
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| 141 | ProposePrimaryTrackFinalMomentumDirection(momentum, localCoordinates); |
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| 142 | } |
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| 143 | |
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| 144 | //-------------------- |
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| 145 | // |
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| 146 | //-------------------- |
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| 147 | void |
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| 148 | G4FastStep:: |
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| 149 | ProposePrimaryTrackFinalKineticEnergyAndDirection(G4double kineticEnergy, |
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| 150 | const G4ThreeVector &direction, |
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| 151 | G4bool localCoordinates) |
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| 152 | { |
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| 153 | // Compute global direction if needed... |
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| 154 | G4ThreeVector globalDirection = direction; |
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| 155 | if (localCoordinates) |
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| 156 | globalDirection =fFastTrack->GetInverseAffineTransformation()-> |
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| 157 | TransformAxis(direction); |
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| 158 | // ...and feed the globalMomentum (ensuring unitarity) |
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| 159 | SetMomentumChange(globalDirection.unit()); |
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| 160 | SetPrimaryTrackFinalKineticEnergy(kineticEnergy); |
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| 161 | } |
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| 162 | |
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| 163 | void |
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| 164 | G4FastStep:: |
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| 165 | SetPrimaryTrackFinalKineticEnergyAndDirection(G4double kineticEnergy, |
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| 166 | const G4ThreeVector &direction, |
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| 167 | G4bool localCoordinates) |
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| 168 | { |
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| 169 | ProposePrimaryTrackFinalKineticEnergyAndDirection(kineticEnergy, direction, localCoordinates); |
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| 170 | } |
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| 171 | |
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| 172 | //-------------------- |
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| 173 | // |
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| 174 | //-------------------- |
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| 175 | void |
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| 176 | G4FastStep:: |
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| 177 | ProposePrimaryTrackFinalPolarization(const G4ThreeVector &polarization, |
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| 178 | G4bool localCoordinates) |
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| 179 | { |
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| 180 | // Compute polarization in global system if needed: |
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| 181 | G4ThreeVector globalPolarization(polarization); |
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| 182 | if (localCoordinates) |
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| 183 | globalPolarization = fFastTrack->GetInverseAffineTransformation()-> |
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| 184 | TransformAxis(globalPolarization); |
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| 185 | // Feed the particle globalPolarization: |
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| 186 | thePolarizationChange = globalPolarization; |
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| 187 | } |
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| 188 | |
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| 189 | void |
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| 190 | G4FastStep:: |
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| 191 | SetPrimaryTrackFinalPolarization(const G4ThreeVector &polarization, |
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| 192 | G4bool localCoordinates) |
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| 193 | { |
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| 194 | ProposePrimaryTrackFinalPolarization(polarization, localCoordinates); |
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| 195 | } |
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| 196 | |
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| 197 | //-------------------- |
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| 198 | // |
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| 199 | //-------------------- |
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| 200 | G4Track* G4FastStep:: |
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| 201 | CreateSecondaryTrack(const G4DynamicParticle& dynamics, |
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| 202 | G4ThreeVector polarization, |
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| 203 | G4ThreeVector position, |
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| 204 | G4double time, |
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| 205 | G4bool localCoordinates ) |
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| 206 | { |
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| 207 | G4DynamicParticle dummyDynamics(dynamics); |
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| 208 | |
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| 209 | // ------------------------------------------ |
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| 210 | // Add the polarization to the dummyDynamics: |
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| 211 | // ------------------------------------------ |
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| 212 | dummyDynamics.SetPolarization(polarization.x(), |
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| 213 | polarization.y(), |
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| 214 | polarization.z()); |
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| 215 | |
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| 216 | return CreateSecondaryTrack(dummyDynamics, position, time, localCoordinates); |
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| 217 | } |
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| 218 | |
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| 219 | //-------------------- |
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| 220 | // |
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| 221 | //-------------------- |
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| 222 | G4Track* G4FastStep:: |
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| 223 | CreateSecondaryTrack(const G4DynamicParticle& dynamics, |
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| 224 | G4ThreeVector position, |
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| 225 | G4double time, |
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| 226 | G4bool localCoordinates ) |
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| 227 | { |
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| 228 | // ---------------------------------------- |
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| 229 | // Quantities in global coordinates system. |
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| 230 | // |
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| 231 | // The allocated globalDynamics is deleted |
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| 232 | // by the destructor of the G4Track. |
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| 233 | // ---------------------------------------- |
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| 234 | G4DynamicParticle* globalDynamics = |
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| 235 | new G4DynamicParticle(dynamics); |
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| 236 | G4ThreeVector globalPosition(position); |
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| 237 | |
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| 238 | // ----------------------------------- |
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| 239 | // Convert to global system if needed: |
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| 240 | // ----------------------------------- |
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| 241 | if (localCoordinates) |
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| 242 | { |
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| 243 | // -- Momentum Direction: |
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| 244 | globalDynamics->SetMomentumDirection(fFastTrack-> |
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| 245 | GetInverseAffineTransformation()-> |
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| 246 | TransformAxis(globalDynamics-> |
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| 247 | GetMomentumDirection())); |
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| 248 | // -- Polarization: |
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| 249 | G4ThreeVector globalPolarization; |
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| 250 | globalPolarization = fFastTrack->GetInverseAffineTransformation()-> |
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| 251 | TransformAxis(globalDynamics->GetPolarization()); |
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| 252 | globalDynamics->SetPolarization( |
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| 253 | globalPolarization.x(), |
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| 254 | globalPolarization.y(), |
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| 255 | globalPolarization.z() |
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| 256 | ); |
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| 257 | |
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| 258 | // -- Position: |
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| 259 | globalPosition = fFastTrack->GetInverseAffineTransformation()-> |
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| 260 | TransformPoint(globalPosition); |
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| 261 | } |
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| 262 | |
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| 263 | //------------------------------------- |
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| 264 | // Create the G4Track of the secondary: |
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| 265 | //------------------------------------- |
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| 266 | G4Track* secondary = new G4Track( |
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| 267 | globalDynamics, |
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| 268 | time, |
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| 269 | globalPosition |
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| 270 | ); |
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| 271 | |
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| 272 | //------------------------------- |
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| 273 | // and feed the changes: |
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| 274 | //------------------------------- |
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| 275 | AddSecondary(secondary); |
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| 276 | |
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| 277 | //-------------------------------------- |
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| 278 | // returns the pointer on the secondary: |
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| 279 | //-------------------------------------- |
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| 280 | return secondary; |
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| 281 | } |
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| 282 | |
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| 283 | // G4FastStep should never be Initialized in this way |
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| 284 | // but we must define it to avoid warnings. |
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| 285 | void G4FastStep::Initialize(const G4Track&) |
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| 286 | { |
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| 287 | G4Exception("G4FastStep::Initialize()", "InvalidCondition", FatalException, |
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| 288 | "G4FastStep can be initialised only through G4FastTrack!"); |
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| 289 | } |
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| 290 | |
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| 291 | G4FastStep::G4FastStep() |
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| 292 | : G4VParticleChange() |
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| 293 | { |
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| 294 | if (verboseLevel>2) |
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| 295 | { |
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| 296 | G4cerr << "G4FastStep::G4FastStep() " << G4endl; |
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| 297 | } |
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| 298 | } |
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| 299 | |
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| 300 | G4FastStep::~G4FastStep() |
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| 301 | { |
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| 302 | if (verboseLevel>2) |
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| 303 | { |
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| 304 | G4cerr << "G4FastStep::~G4FastStep() " << G4endl; |
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| 305 | } |
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| 306 | } |
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| 307 | |
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| 308 | // copy and assignment operators are implemented as "shallow copy" |
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| 309 | G4FastStep::G4FastStep(const G4FastStep &right) |
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| 310 | : G4VParticleChange() |
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| 311 | { |
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| 312 | *this = right; |
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| 313 | } |
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| 314 | |
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| 315 | |
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| 316 | G4FastStep & G4FastStep::operator=(const G4FastStep &right) |
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| 317 | { |
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| 318 | if (this != &right) |
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| 319 | { |
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| 320 | G4VParticleChange::operator=(right); |
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| 321 | theListOfSecondaries = right.theListOfSecondaries; |
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| 322 | theSizeOftheListOfSecondaries = right.theSizeOftheListOfSecondaries; |
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| 323 | theNumberOfSecondaries = right.theNumberOfSecondaries; |
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| 324 | theStatusChange = right.theStatusChange; |
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| 325 | theMomentumChange = right.theMomentumChange; |
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| 326 | thePolarizationChange = right.thePolarizationChange; |
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| 327 | thePositionChange = right.thePositionChange; |
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| 328 | theTimeChange = right.theTimeChange; |
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| 329 | theEnergyChange = right.theEnergyChange; |
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| 330 | theTrueStepLength = right.theTrueStepLength; |
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| 331 | theLocalEnergyDeposit = right.theLocalEnergyDeposit; |
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| 332 | theSteppingControlFlag = right.theSteppingControlFlag; |
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| 333 | theWeightChange = right.theWeightChange; |
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| 334 | } |
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| 335 | return *this; |
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| 336 | } |
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| 337 | |
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| 338 | |
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| 339 | |
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| 340 | |
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| 341 | |
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| 342 | G4bool G4FastStep::operator==(const G4FastStep &right) const |
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| 343 | { |
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| 344 | return ((G4VParticleChange *)this == (G4VParticleChange *) &right); |
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| 345 | } |
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| 346 | |
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| 347 | G4bool G4FastStep::operator!=(const G4FastStep &right) const |
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| 348 | { |
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| 349 | return ((G4VParticleChange *)this != (G4VParticleChange *) &right); |
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| 350 | } |
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| 351 | |
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| 352 | //---------------------------------------------------------------- |
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| 353 | // methods for updating G4Step |
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| 354 | // |
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| 355 | |
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| 356 | G4Step* G4FastStep::UpdateStepForPostStep(G4Step* pStep) |
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| 357 | { |
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| 358 | // A physics process always calculates the final state of the particle |
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| 359 | |
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| 360 | // Take note that the return type of GetMomentumChange is a |
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| 361 | // pointer to G4ParticleMometum. Also it is a normalized |
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| 362 | // momentum vector. |
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| 363 | |
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| 364 | // G4StepPoint* pPreStepPoint = pStep->GetPreStepPoint(); |
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| 365 | G4StepPoint* pPostStepPoint = pStep->GetPostStepPoint(); |
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| 366 | G4Track* aTrack = pStep->GetTrack(); |
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| 367 | // G4double mass = aTrack->GetDynamicParticle()->GetMass(); |
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| 368 | |
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| 369 | // update kinetic energy and momentum direction |
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| 370 | pPostStepPoint->SetMomentumDirection(theMomentumChange); |
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| 371 | pPostStepPoint->SetKineticEnergy( theEnergyChange ); |
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| 372 | |
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| 373 | // update polarization |
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| 374 | pPostStepPoint->SetPolarization( thePolarizationChange ); |
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| 375 | |
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| 376 | // update position and time |
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| 377 | pPostStepPoint->SetPosition( thePositionChange ); |
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| 378 | pPostStepPoint->SetGlobalTime( theTimeChange ); |
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| 379 | pPostStepPoint->AddLocalTime( theTimeChange |
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| 380 | - aTrack->GetGlobalTime()); |
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| 381 | pPostStepPoint->SetProperTime( theProperTimeChange ); |
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| 382 | |
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| 383 | // update weight |
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| 384 | pPostStepPoint->SetWeight( theWeightChange ); |
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| 385 | |
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| 386 | if (debugFlag) CheckIt(*aTrack); |
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| 387 | |
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| 388 | |
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| 389 | // Update the G4Step specific attributes |
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| 390 | return UpdateStepInfo(pStep); |
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| 391 | } |
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| 392 | |
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| 393 | G4Step* G4FastStep::UpdateStepForAtRest(G4Step* pStep) |
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| 394 | { |
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| 395 | // A physics process always calculates the final state of the particle |
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| 396 | |
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| 397 | // G4StepPoint* pPreStepPoint = pStep->GetPreStepPoint(); |
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| 398 | G4StepPoint* pPostStepPoint = pStep->GetPostStepPoint(); |
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| 399 | G4Track* aTrack = pStep->GetTrack(); |
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| 400 | // G4double mass = aTrack->GetDynamicParticle()->GetMass(); |
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| 401 | |
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| 402 | // update kinetic energy and momentum direction |
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| 403 | pPostStepPoint->SetMomentumDirection(theMomentumChange); |
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| 404 | pPostStepPoint->SetKineticEnergy( theEnergyChange ); |
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| 405 | |
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| 406 | // update polarization |
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| 407 | pPostStepPoint->SetPolarization( thePolarizationChange ); |
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| 408 | |
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| 409 | // update position and time |
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| 410 | pPostStepPoint->SetPosition( thePositionChange ); |
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| 411 | pPostStepPoint->SetGlobalTime( theTimeChange ); |
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| 412 | pPostStepPoint->AddLocalTime( theTimeChange |
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| 413 | - aTrack->GetGlobalTime()); |
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| 414 | pPostStepPoint->SetProperTime( theProperTimeChange ); |
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| 415 | |
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| 416 | // update weight |
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| 417 | pPostStepPoint->SetWeight( theWeightChange ); |
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| 418 | |
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| 419 | if (debugFlag) CheckIt(*aTrack); |
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| 420 | |
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| 421 | // Update the G4Step specific attributes |
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| 422 | return UpdateStepInfo(pStep); |
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| 423 | } |
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| 424 | |
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| 425 | //---------------------------------------------------------------- |
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| 426 | // methods for printing messages |
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| 427 | // |
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| 428 | |
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| 429 | void G4FastStep::DumpInfo() const |
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| 430 | { |
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| 431 | // use base-class DumpInfo |
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| 432 | G4VParticleChange::DumpInfo(); |
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| 433 | |
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| 434 | G4cout.precision(3); |
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| 435 | G4cout << " Position - x (mm) : " |
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| 436 | << std::setw(20) << thePositionChange.x()/mm |
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| 437 | << G4endl; |
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| 438 | G4cout << " Position - y (mm) : " |
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| 439 | << std::setw(20) << thePositionChange.y()/mm |
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| 440 | << G4endl; |
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| 441 | G4cout << " Position - z (mm) : " |
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| 442 | << std::setw(20) << thePositionChange.z()/mm |
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| 443 | << G4endl; |
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| 444 | G4cout << " Time (ns) : " |
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| 445 | << std::setw(20) << theTimeChange/ns |
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| 446 | << G4endl; |
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| 447 | G4cout << " Proper Time (ns) : " |
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| 448 | << std::setw(20) << theProperTimeChange/ns |
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| 449 | << G4endl; |
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| 450 | G4cout << " Momentum Direct - x : " |
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| 451 | << std::setw(20) << theMomentumChange.x() |
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| 452 | << G4endl; |
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| 453 | G4cout << " Momentum Direct - y : " |
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| 454 | << std::setw(20) << theMomentumChange.y() |
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| 455 | << G4endl; |
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| 456 | G4cout << " Momentum Direct - z : " |
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| 457 | << std::setw(20) << theMomentumChange.z() |
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| 458 | << G4endl; |
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| 459 | G4cout << " Kinetic Energy (MeV): " |
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| 460 | << std::setw(20) << theEnergyChange/MeV |
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| 461 | << G4endl; |
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| 462 | G4cout << " Polarization - x : " |
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| 463 | << std::setw(20) << thePolarizationChange.x() |
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| 464 | << G4endl; |
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| 465 | G4cout << " Polarization - y : " |
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| 466 | << std::setw(20) << thePolarizationChange.y() |
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| 467 | << G4endl; |
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| 468 | G4cout << " Polarization - z : " |
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| 469 | << std::setw(20) << thePolarizationChange.z() |
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| 470 | << G4endl; |
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| 471 | } |
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| 472 | |
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| 473 | G4bool G4FastStep::CheckIt(const G4Track& aTrack) |
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| 474 | { |
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| 475 | // |
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| 476 | // In the G4FastStep::CheckIt |
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| 477 | // We only check a bit |
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| 478 | // |
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| 479 | // If the user violates the energy, |
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| 480 | // We don't care, we agree. |
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| 481 | // |
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| 482 | // But for theMomentumDirectionChange, |
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| 483 | // We do pay attention. |
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| 484 | // And if too large is its range, |
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| 485 | // We issue an Exception. |
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| 486 | // |
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| 487 | // |
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| 488 | // It means, the G4FastStep::CheckIt issues an exception only for the |
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| 489 | // theMomentumDirectionChange which should be an unit vector |
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| 490 | // and it corrects it because it could cause problems for the ulterior |
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| 491 | // tracking.For the rest, only warning are issued. |
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| 492 | |
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| 493 | G4bool itsOK = true; |
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| 494 | G4bool exitWithError = false; |
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| 495 | G4double accuracy; |
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| 496 | |
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| 497 | // Energy should not be larger than the initial value |
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| 498 | accuracy = ( theEnergyChange - aTrack.GetKineticEnergy())/MeV; |
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| 499 | if (accuracy > GetAccuracyForWarning()) { |
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| 500 | G4cout << "ERROR - G4FastStep::CheckIt()" << G4endl |
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| 501 | << " The energy becomes larger than the initial value !!" |
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| 502 | << G4endl |
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| 503 | << " Difference: " << accuracy << "[MeV] " << G4endl; |
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| 504 | itsOK = false; |
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| 505 | if (accuracy > GetAccuracyForException()) {exitWithError = true;} |
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| 506 | } |
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| 507 | |
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| 508 | G4bool itsOKforMomentum = true; |
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| 509 | if ( theEnergyChange >0.) { |
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| 510 | accuracy = std::abs(theMomentumChange.mag2()-1.0); |
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| 511 | if (accuracy > GetAccuracyForWarning()) { |
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| 512 | G4cout << "ERROR - G4FastStep::CheckIt()" << G4endl |
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| 513 | << " The Momentum Change is not unit vector !!" << G4endl |
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| 514 | << " Difference: " << accuracy << G4endl; |
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| 515 | itsOK = itsOKforMomentum = false; |
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| 516 | if (accuracy > GetAccuracyForException()) {exitWithError = true;} |
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| 517 | } |
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| 518 | } |
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| 519 | |
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| 520 | accuracy = (aTrack.GetGlobalTime()- theTimeChange)/ns; |
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| 521 | if (accuracy > GetAccuracyForWarning()) { |
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| 522 | G4cout << "ERROR - G4FastStep::CheckIt()" << G4endl |
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| 523 | << " The global time goes back !!" << G4endl |
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| 524 | << " Difference: " << accuracy << "[ns] " << G4endl; |
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| 525 | itsOK = false; |
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| 526 | } |
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| 527 | |
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| 528 | accuracy = (aTrack.GetProperTime() - theProperTimeChange )/ns; |
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| 529 | if (accuracy) { |
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| 530 | G4cout << "ERROR - G4FastStep::CheckIt()" << G4endl |
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| 531 | << " The proper time goes back !!" << G4endl |
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| 532 | << " Difference: " << accuracy << "[ns] " << G4endl; |
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| 533 | itsOK = false; |
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| 534 | } |
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| 535 | |
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| 536 | if (!itsOK) { |
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| 537 | G4cout << "ERROR - G4FastStep::CheckIt() " << G4endl; |
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| 538 | G4cout << " Pointer : " << this << G4endl ; |
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| 539 | DumpInfo(); |
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| 540 | } |
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| 541 | |
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| 542 | // Exit with error |
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| 543 | if (exitWithError) { |
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| 544 | G4Exception("G4FastStep::CheckIt()", "FatalError", |
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| 545 | FatalException, "Error condition in G4ParticleChange."); |
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| 546 | } |
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| 547 | |
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| 548 | //correction for Momentum only. |
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| 549 | if (!itsOKforMomentum) { |
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| 550 | G4double vmag = theMomentumChange.mag(); |
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| 551 | theMomentumChange = (1./vmag)*theMomentumChange; |
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| 552 | } |
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| 553 | |
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| 554 | itsOK = (itsOK) && G4VParticleChange::CheckIt(aTrack); |
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| 555 | return itsOK; |
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| 556 | } |
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