[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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[1196] | 26 | // $Id: G4EnergyLossForExtrapolator.cc,v 1.19 2009/07/09 17:04:55 vnivanch Exp $ |
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[1337] | 27 | // GEANT4 tag $Name: geant4-09-04-beta-01 $ |
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[819] | 28 | // |
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| 29 | //--------------------------------------------------------------------------- |
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| 30 | // |
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| 31 | // ClassName: G4EnergyLossForExtrapolator |
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| 32 | // |
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| 33 | // Description: This class provide calculation of energy loss, fluctuation, |
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| 34 | // and msc angle |
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| 35 | // |
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| 36 | // Author: 09.12.04 V.Ivanchenko |
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| 37 | // |
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| 38 | // Modification: |
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| 39 | // 08-04-05 Rename Propogator -> Extrapolator (V.Ivanchenko) |
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| 40 | // 16-03-06 Add muon tables and fix bug in units (V.Ivanchenko) |
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| 41 | // 21-03-06 Add verbosity defined in the constructor and Initialisation |
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| 42 | // start only when first public method is called (V.Ivanchenko) |
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| 43 | // 03-05-06 Remove unused pointer G4Material* from number of methods (VI) |
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| 44 | // 12-05-06 SEt linLossLimit=0.001 (VI) |
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| 45 | // |
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| 46 | //---------------------------------------------------------------------------- |
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| 47 | // |
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| 48 | |
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| 49 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 50 | |
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| 51 | #include "G4EnergyLossForExtrapolator.hh" |
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| 52 | #include "G4PhysicsLogVector.hh" |
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| 53 | #include "G4ParticleDefinition.hh" |
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| 54 | #include "G4Material.hh" |
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| 55 | #include "G4MaterialCutsCouple.hh" |
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| 56 | #include "G4Electron.hh" |
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| 57 | #include "G4Positron.hh" |
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| 58 | #include "G4Proton.hh" |
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| 59 | #include "G4MuonPlus.hh" |
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| 60 | #include "G4MuonMinus.hh" |
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| 61 | #include "G4ParticleTable.hh" |
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| 62 | #include "G4LossTableBuilder.hh" |
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| 63 | #include "G4MollerBhabhaModel.hh" |
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| 64 | #include "G4BetheBlochModel.hh" |
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| 65 | #include "G4eBremsstrahlungModel.hh" |
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| 66 | #include "G4MuPairProductionModel.hh" |
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| 67 | #include "G4MuBremsstrahlungModel.hh" |
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| 68 | #include "G4ProductionCuts.hh" |
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[961] | 69 | #include "G4LossTableManager.hh" |
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| 70 | #include "G4WentzelVIModel.hh" |
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[819] | 71 | |
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| 72 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 73 | |
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| 74 | G4EnergyLossForExtrapolator::G4EnergyLossForExtrapolator(G4int verb) |
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| 75 | :maxEnergyTransfer(DBL_MAX),verbose(verb),isInitialised(false) |
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| 76 | {} |
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| 77 | |
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| 78 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 79 | |
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| 80 | G4EnergyLossForExtrapolator:: ~G4EnergyLossForExtrapolator() |
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| 81 | { |
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| 82 | for(G4int i=0; i<nmat; i++) {delete couples[i];} |
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| 83 | delete dedxElectron; |
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| 84 | delete dedxPositron; |
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| 85 | delete dedxProton; |
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| 86 | delete rangeElectron; |
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| 87 | delete rangePositron; |
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| 88 | delete rangeProton; |
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| 89 | delete invRangeElectron; |
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| 90 | delete invRangePositron; |
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| 91 | delete invRangeProton; |
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[961] | 92 | delete mscElectron; |
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[819] | 93 | delete cuts; |
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| 94 | } |
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| 95 | |
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| 96 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 97 | |
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| 98 | G4double G4EnergyLossForExtrapolator::EnergyAfterStep(G4double kinEnergy, |
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| 99 | G4double stepLength, |
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| 100 | const G4Material* mat, |
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| 101 | const G4ParticleDefinition* part) |
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| 102 | { |
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| 103 | if(!isInitialised) Initialisation(); |
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| 104 | G4double kinEnergyFinal = kinEnergy; |
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[961] | 105 | if(SetupKinematics(part, mat, kinEnergy)) { |
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| 106 | G4double step = TrueStepLength(kinEnergy,stepLength,mat,part); |
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[819] | 107 | G4double r = ComputeRange(kinEnergy,part); |
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| 108 | if(r <= step) { |
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| 109 | kinEnergyFinal = 0.0; |
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| 110 | } else if(step < linLossLimit*r) { |
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| 111 | kinEnergyFinal -= step*ComputeDEDX(kinEnergy,part); |
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| 112 | } else { |
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| 113 | G4double r1 = r - step; |
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| 114 | kinEnergyFinal = ComputeEnergy(r1,part); |
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| 115 | } |
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| 116 | } |
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| 117 | return kinEnergyFinal; |
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| 118 | } |
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| 119 | |
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| 120 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 121 | |
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| 122 | G4double G4EnergyLossForExtrapolator::EnergyBeforeStep(G4double kinEnergy, |
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| 123 | G4double stepLength, |
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| 124 | const G4Material* mat, |
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| 125 | const G4ParticleDefinition* part) |
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| 126 | { |
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| 127 | if(!isInitialised) Initialisation(); |
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| 128 | G4double kinEnergyFinal = kinEnergy; |
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| 129 | |
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[961] | 130 | if(SetupKinematics(part, mat, kinEnergy)) { |
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| 131 | G4double step = TrueStepLength(kinEnergy,stepLength,mat,part); |
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[819] | 132 | G4double r = ComputeRange(kinEnergy,part); |
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| 133 | |
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| 134 | if(step < linLossLimit*r) { |
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| 135 | kinEnergyFinal += step*ComputeDEDX(kinEnergy,part); |
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| 136 | } else { |
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| 137 | G4double r1 = r + step; |
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| 138 | kinEnergyFinal = ComputeEnergy(r1,part); |
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| 139 | } |
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| 140 | } |
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| 141 | return kinEnergyFinal; |
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| 142 | } |
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| 143 | |
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| 144 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 145 | |
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[961] | 146 | G4double G4EnergyLossForExtrapolator::TrueStepLength(G4double kinEnergy, |
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| 147 | G4double stepLength, |
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| 148 | const G4Material* mat, |
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| 149 | const G4ParticleDefinition* part) |
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[819] | 150 | { |
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[961] | 151 | G4double res = stepLength; |
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[819] | 152 | if(!isInitialised) Initialisation(); |
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[961] | 153 | if(SetupKinematics(part, mat, kinEnergy)) { |
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| 154 | if(part == electron || part == positron) { |
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| 155 | G4double x = stepLength*ComputeValue(kinEnergy, mscElectron); |
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| 156 | if(x < 0.2) res *= (1.0 + 0.5*x + x*x/3.0); |
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| 157 | else if(x < 0.9999) res = -std::log(1.0 - x)*stepLength/x; |
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| 158 | else res = ComputeRange(kinEnergy,part); |
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| 159 | |
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| 160 | } else { |
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| 161 | res = ComputeTrueStep(mat,part,kinEnergy,stepLength); |
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| 162 | } |
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| 163 | } |
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| 164 | return res; |
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| 165 | } |
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| 166 | |
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| 167 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 168 | |
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| 169 | G4bool G4EnergyLossForExtrapolator::SetupKinematics(const G4ParticleDefinition* part, |
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| 170 | const G4Material* mat, |
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| 171 | G4double kinEnergy) |
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| 172 | { |
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| 173 | if(!part || !mat || kinEnergy < keV) return false; |
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| 174 | if(!isInitialised) Initialisation(); |
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[819] | 175 | G4bool flag = false; |
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| 176 | if(part != currentParticle) { |
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| 177 | flag = true; |
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| 178 | currentParticle = part; |
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| 179 | mass = part->GetPDGMass(); |
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| 180 | G4double q = part->GetPDGCharge()/eplus; |
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| 181 | charge2 = q*q; |
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| 182 | } |
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| 183 | if(mat != currentMaterial) { |
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| 184 | G4int i = mat->GetIndex(); |
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| 185 | if(i >= nmat) { |
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| 186 | G4cout << "### G4EnergyLossForExtrapolator WARNING:index i= " |
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| 187 | << i << " is out of table - NO extrapolation" << G4endl; |
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| 188 | } else { |
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| 189 | flag = true; |
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| 190 | currentMaterial = mat; |
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| 191 | electronDensity = mat->GetElectronDensity(); |
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| 192 | radLength = mat->GetRadlen(); |
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| 193 | index = i; |
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| 194 | } |
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| 195 | } |
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| 196 | if(flag || kinEnergy != kineticEnergy) { |
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| 197 | kineticEnergy = kinEnergy; |
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| 198 | G4double tau = kinEnergy/mass; |
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| 199 | |
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| 200 | gam = tau + 1.0; |
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| 201 | bg2 = tau * (tau + 2.0); |
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| 202 | beta2 = bg2/(gam*gam); |
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| 203 | tmax = kinEnergy; |
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| 204 | if(part == electron) tmax *= 0.5; |
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| 205 | else if(part != positron) { |
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| 206 | G4double r = electron_mass_c2/mass; |
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| 207 | tmax = 2.0*bg2*electron_mass_c2/(1.0 + 2.0*gam*r + r*r); |
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| 208 | } |
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| 209 | if(tmax > maxEnergyTransfer) tmax = maxEnergyTransfer; |
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| 210 | } |
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[961] | 211 | return true; |
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[819] | 212 | } |
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| 213 | |
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| 214 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 215 | |
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| 216 | void G4EnergyLossForExtrapolator::Initialisation() |
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| 217 | { |
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| 218 | isInitialised = true; |
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| 219 | if(verbose>1) |
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| 220 | G4cout << "### G4EnergyLossForExtrapolator::Initialisation" << G4endl; |
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| 221 | currentParticle = 0; |
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| 222 | currentMaterial = 0; |
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| 223 | kineticEnergy = 0.0; |
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| 224 | electron = G4Electron::Electron(); |
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| 225 | positron = G4Positron::Positron(); |
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| 226 | proton = G4Proton::Proton(); |
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| 227 | muonPlus = G4MuonPlus::MuonPlus(); |
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| 228 | muonMinus= G4MuonMinus::MuonMinus(); |
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| 229 | |
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| 230 | currentParticleName = ""; |
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| 231 | |
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[1196] | 232 | linLossLimit = 0.01; |
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[819] | 233 | emin = 1.*MeV; |
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| 234 | emax = 10.*TeV; |
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| 235 | nbins = 70; |
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| 236 | |
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| 237 | nmat = G4Material::GetNumberOfMaterials(); |
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| 238 | const G4MaterialTable* mtable = G4Material::GetMaterialTable(); |
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| 239 | cuts = new G4ProductionCuts(); |
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| 240 | |
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| 241 | const G4MaterialCutsCouple* couple; |
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| 242 | for(G4int i=0; i<nmat; i++) { |
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| 243 | couple = new G4MaterialCutsCouple((*mtable)[i],cuts); |
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| 244 | couples.push_back(couple); |
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| 245 | } |
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| 246 | |
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| 247 | dedxElectron = PrepareTable(); |
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| 248 | dedxPositron = PrepareTable(); |
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| 249 | dedxMuon = PrepareTable(); |
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| 250 | dedxProton = PrepareTable(); |
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| 251 | rangeElectron = PrepareTable(); |
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| 252 | rangePositron = PrepareTable(); |
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| 253 | rangeMuon = PrepareTable(); |
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| 254 | rangeProton = PrepareTable(); |
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| 255 | invRangeElectron = PrepareTable(); |
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| 256 | invRangePositron = PrepareTable(); |
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| 257 | invRangeMuon = PrepareTable(); |
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| 258 | invRangeProton = PrepareTable(); |
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[961] | 259 | mscElectron = PrepareTable(); |
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[819] | 260 | |
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| 261 | G4LossTableBuilder builder; |
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| 262 | |
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| 263 | if(verbose>1) |
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| 264 | G4cout << "### G4EnergyLossForExtrapolator Builds electron tables" << G4endl; |
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| 265 | |
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| 266 | ComputeElectronDEDX(electron, dedxElectron); |
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| 267 | builder.BuildRangeTable(dedxElectron,rangeElectron); |
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| 268 | builder.BuildInverseRangeTable(rangeElectron, invRangeElectron); |
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| 269 | |
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| 270 | if(verbose>1) |
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| 271 | G4cout << "### G4EnergyLossForExtrapolator Builds positron tables" << G4endl; |
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| 272 | |
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| 273 | ComputeElectronDEDX(positron, dedxPositron); |
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| 274 | builder.BuildRangeTable(dedxPositron, rangePositron); |
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| 275 | builder.BuildInverseRangeTable(rangePositron, invRangePositron); |
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| 276 | |
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| 277 | if(verbose>1) |
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| 278 | G4cout << "### G4EnergyLossForExtrapolator Builds muon tables" << G4endl; |
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| 279 | |
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| 280 | ComputeMuonDEDX(muonPlus, dedxMuon); |
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| 281 | builder.BuildRangeTable(dedxMuon, rangeMuon); |
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| 282 | builder.BuildInverseRangeTable(rangeMuon, invRangeMuon); |
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| 283 | |
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| 284 | if(verbose>1) |
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| 285 | G4cout << "### G4EnergyLossForExtrapolator Builds proton tables" << G4endl; |
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| 286 | |
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| 287 | ComputeProtonDEDX(proton, dedxProton); |
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| 288 | builder.BuildRangeTable(dedxProton, rangeProton); |
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| 289 | builder.BuildInverseRangeTable(rangeProton, invRangeProton); |
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| 290 | |
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[961] | 291 | ComputeTrasportXS(electron, mscElectron); |
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[819] | 292 | } |
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| 293 | |
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| 294 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 295 | |
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| 296 | G4PhysicsTable* G4EnergyLossForExtrapolator::PrepareTable() |
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| 297 | { |
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| 298 | G4PhysicsTable* table = new G4PhysicsTable(); |
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| 299 | |
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| 300 | for(G4int i=0; i<nmat; i++) { |
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| 301 | |
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| 302 | G4PhysicsVector* v = new G4PhysicsLogVector(emin, emax, nbins); |
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[961] | 303 | v->SetSpline(G4LossTableManager::Instance()->SplineFlag()); |
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[819] | 304 | table->push_back(v); |
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| 305 | } |
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| 306 | return table; |
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| 307 | } |
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| 308 | |
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| 309 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 310 | |
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| 311 | const G4ParticleDefinition* G4EnergyLossForExtrapolator::FindParticle(const G4String& name) |
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| 312 | { |
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| 313 | const G4ParticleDefinition* p = 0; |
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| 314 | if(name != currentParticleName) { |
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| 315 | p = G4ParticleTable::GetParticleTable()->FindParticle(name); |
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| 316 | if(!p) { |
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| 317 | G4cout << "### G4EnergyLossForExtrapolator WARNING:FindParticle fails to find " |
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| 318 | << name << G4endl; |
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| 319 | } |
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| 320 | } else { |
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| 321 | p = currentParticle; |
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| 322 | } |
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| 323 | return p; |
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| 324 | } |
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| 325 | |
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| 326 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 327 | |
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| 328 | G4double G4EnergyLossForExtrapolator::ComputeDEDX(G4double kinEnergy, |
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| 329 | const G4ParticleDefinition* part) |
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| 330 | { |
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| 331 | G4double x = 0.0; |
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| 332 | if(part == electron) x = ComputeValue(kinEnergy, dedxElectron); |
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| 333 | else if(part == positron) x = ComputeValue(kinEnergy, dedxPositron); |
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| 334 | else if(part == muonPlus || part == muonMinus) { |
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| 335 | x = ComputeValue(kinEnergy, dedxMuon); |
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| 336 | } else { |
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| 337 | G4double e = kinEnergy*proton_mass_c2/mass; |
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| 338 | x = ComputeValue(e, dedxProton)*charge2; |
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| 339 | } |
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| 340 | return x; |
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| 341 | } |
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| 342 | |
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| 343 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 344 | |
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| 345 | G4double G4EnergyLossForExtrapolator::ComputeRange(G4double kinEnergy, |
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| 346 | const G4ParticleDefinition* part) |
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| 347 | { |
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| 348 | G4double x = 0.0; |
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| 349 | if(part == electron) x = ComputeValue(kinEnergy, rangeElectron); |
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| 350 | else if(part == positron) x = ComputeValue(kinEnergy, rangePositron); |
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| 351 | else if(part == muonPlus || part == muonMinus) |
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| 352 | x = ComputeValue(kinEnergy, rangeMuon); |
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| 353 | else { |
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| 354 | G4double massratio = proton_mass_c2/mass; |
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| 355 | G4double e = kinEnergy*massratio; |
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| 356 | x = ComputeValue(e, rangeProton)/(charge2*massratio); |
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| 357 | } |
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| 358 | return x; |
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| 359 | } |
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| 360 | |
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| 361 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 362 | |
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| 363 | G4double G4EnergyLossForExtrapolator::ComputeEnergy(G4double range, |
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| 364 | const G4ParticleDefinition* part) |
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| 365 | { |
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| 366 | G4double x = 0.0; |
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| 367 | if(part == electron) x = ComputeValue(range, invRangeElectron); |
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| 368 | else if(part == positron) x = ComputeValue(range, invRangePositron); |
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| 369 | else if(part == muonPlus || part == muonMinus) |
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| 370 | x = ComputeValue(range, invRangeMuon); |
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| 371 | else { |
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| 372 | G4double massratio = proton_mass_c2/mass; |
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| 373 | G4double r = range*massratio*charge2; |
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| 374 | x = ComputeValue(r, invRangeProton)/massratio; |
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| 375 | } |
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| 376 | return x; |
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| 377 | } |
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| 378 | |
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| 379 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 380 | |
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| 381 | void G4EnergyLossForExtrapolator::ComputeElectronDEDX(const G4ParticleDefinition* part, |
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| 382 | G4PhysicsTable* table) |
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| 383 | { |
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| 384 | G4DataVector v; |
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| 385 | G4MollerBhabhaModel* ioni = new G4MollerBhabhaModel(); |
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| 386 | G4eBremsstrahlungModel* brem = new G4eBremsstrahlungModel(); |
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| 387 | ioni->Initialise(part, v); |
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| 388 | brem->Initialise(part, v); |
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| 389 | |
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| 390 | mass = electron_mass_c2; |
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| 391 | charge2 = 1.0; |
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| 392 | currentParticle = part; |
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| 393 | |
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| 394 | const G4MaterialTable* mtable = G4Material::GetMaterialTable(); |
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| 395 | if(0<verbose) { |
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| 396 | G4cout << "G4EnergyLossForExtrapolator::ComputeElectronDEDX for " |
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| 397 | << part->GetParticleName() |
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| 398 | << G4endl; |
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| 399 | } |
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| 400 | for(G4int i=0; i<nmat; i++) { |
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| 401 | |
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| 402 | const G4Material* mat = (*mtable)[i]; |
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| 403 | if(1<verbose) |
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| 404 | G4cout << "i= " << i << " mat= " << mat->GetName() << G4endl; |
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| 405 | const G4MaterialCutsCouple* couple = couples[i]; |
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| 406 | G4PhysicsVector* aVector = (*table)[i]; |
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| 407 | |
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[1196] | 408 | for(G4int j=0; j<=nbins; j++) { |
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[819] | 409 | |
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[1196] | 410 | G4double e = aVector->Energy(j); |
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[819] | 411 | G4double dedx = ioni->ComputeDEDX(couple,part,e,e) + brem->ComputeDEDX(couple,part,e,e); |
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| 412 | if(1<verbose) { |
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| 413 | G4cout << "j= " << j |
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| 414 | << " e(MeV)= " << e/MeV |
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| 415 | << " dedx(Mev/cm)= " << dedx*cm/MeV |
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| 416 | << " dedx(Mev.cm2/g)= " << dedx/((MeV*mat->GetDensity())/(g/cm2)) << G4endl; |
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| 417 | } |
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| 418 | aVector->PutValue(j,dedx); |
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| 419 | } |
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| 420 | } |
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| 421 | delete ioni; |
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| 422 | delete brem; |
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| 423 | } |
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| 424 | |
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| 425 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 426 | |
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| 427 | void G4EnergyLossForExtrapolator::ComputeMuonDEDX(const G4ParticleDefinition* part, |
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| 428 | G4PhysicsTable* table) |
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| 429 | { |
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| 430 | G4DataVector v; |
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| 431 | G4BetheBlochModel* ioni = new G4BetheBlochModel(); |
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| 432 | G4MuPairProductionModel* pair = new G4MuPairProductionModel(); |
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| 433 | G4MuBremsstrahlungModel* brem = new G4MuBremsstrahlungModel(); |
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| 434 | ioni->Initialise(part, v); |
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| 435 | pair->Initialise(part, v); |
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| 436 | brem->Initialise(part, v); |
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| 437 | |
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| 438 | mass = part->GetPDGMass(); |
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| 439 | charge2 = 1.0; |
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| 440 | currentParticle = part; |
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| 441 | |
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| 442 | const G4MaterialTable* mtable = G4Material::GetMaterialTable(); |
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| 443 | |
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| 444 | if(0<verbose) { |
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| 445 | G4cout << "G4EnergyLossForExtrapolator::ComputeMuonDEDX for " << part->GetParticleName() |
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| 446 | << G4endl; |
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| 447 | } |
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| 448 | |
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| 449 | for(G4int i=0; i<nmat; i++) { |
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| 450 | |
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| 451 | const G4Material* mat = (*mtable)[i]; |
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| 452 | if(1<verbose) |
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| 453 | G4cout << "i= " << i << " mat= " << mat->GetName() << G4endl; |
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| 454 | const G4MaterialCutsCouple* couple = couples[i]; |
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| 455 | G4PhysicsVector* aVector = (*table)[i]; |
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[1196] | 456 | for(G4int j=0; j<=nbins; j++) { |
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[819] | 457 | |
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[1196] | 458 | G4double e = aVector->Energy(j); |
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[819] | 459 | G4double dedx = ioni->ComputeDEDX(couple,part,e,e) + |
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| 460 | pair->ComputeDEDX(couple,part,e,e) + |
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| 461 | brem->ComputeDEDX(couple,part,e,e); |
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| 462 | aVector->PutValue(j,dedx); |
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| 463 | if(1<verbose) { |
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| 464 | G4cout << "j= " << j |
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| 465 | << " e(MeV)= " << e/MeV |
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| 466 | << " dedx(Mev/cm)= " << dedx*cm/MeV |
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| 467 | << " dedx(Mev/(g/cm2)= " << dedx/((MeV*mat->GetDensity())/(g/cm2)) << G4endl; |
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| 468 | } |
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| 469 | } |
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| 470 | } |
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| 471 | delete ioni; |
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| 472 | } |
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| 473 | |
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| 474 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 475 | |
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| 476 | void G4EnergyLossForExtrapolator::ComputeProtonDEDX(const G4ParticleDefinition* part, |
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| 477 | G4PhysicsTable* table) |
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| 478 | { |
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| 479 | G4DataVector v; |
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| 480 | G4BetheBlochModel* ioni = new G4BetheBlochModel(); |
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| 481 | ioni->Initialise(part, v); |
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| 482 | |
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| 483 | mass = part->GetPDGMass(); |
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| 484 | charge2 = 1.0; |
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| 485 | currentParticle = part; |
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| 486 | |
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| 487 | const G4MaterialTable* mtable = G4Material::GetMaterialTable(); |
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| 488 | |
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| 489 | if(0<verbose) { |
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| 490 | G4cout << "G4EnergyLossForExtrapolator::ComputeProtonDEDX for " << part->GetParticleName() |
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| 491 | << G4endl; |
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| 492 | } |
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| 493 | |
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| 494 | for(G4int i=0; i<nmat; i++) { |
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| 495 | |
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| 496 | const G4Material* mat = (*mtable)[i]; |
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| 497 | if(1<verbose) |
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| 498 | G4cout << "i= " << i << " mat= " << mat->GetName() << G4endl; |
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| 499 | const G4MaterialCutsCouple* couple = couples[i]; |
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| 500 | G4PhysicsVector* aVector = (*table)[i]; |
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[1196] | 501 | for(G4int j=0; j<=nbins; j++) { |
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[819] | 502 | |
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[1196] | 503 | G4double e = aVector->Energy(j); |
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[819] | 504 | G4double dedx = ioni->ComputeDEDX(couple,part,e,e); |
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| 505 | aVector->PutValue(j,dedx); |
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| 506 | if(1<verbose) { |
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| 507 | G4cout << "j= " << j |
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| 508 | << " e(MeV)= " << e/MeV |
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| 509 | << " dedx(Mev/cm)= " << dedx*cm/MeV |
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| 510 | << " dedx(Mev.cm2/g)= " << dedx/((mat->GetDensity())/(g/cm2)) << G4endl; |
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| 511 | } |
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| 512 | } |
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| 513 | } |
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| 514 | delete ioni; |
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| 515 | } |
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| 516 | |
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| 517 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 518 | |
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[961] | 519 | void G4EnergyLossForExtrapolator::ComputeTrasportXS(const G4ParticleDefinition* part, |
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| 520 | G4PhysicsTable* table) |
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| 521 | { |
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| 522 | G4DataVector v; |
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| 523 | G4WentzelVIModel* msc = new G4WentzelVIModel(); |
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| 524 | msc->SetPolarAngleLimit(CLHEP::pi); |
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| 525 | msc->Initialise(part, v); |
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| 526 | |
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| 527 | mass = part->GetPDGMass(); |
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| 528 | charge2 = 1.0; |
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| 529 | currentParticle = part; |
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| 530 | |
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| 531 | const G4MaterialTable* mtable = G4Material::GetMaterialTable(); |
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| 532 | |
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| 533 | if(0<verbose) { |
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| 534 | G4cout << "G4EnergyLossForExtrapolator::ComputeProtonDEDX for " << part->GetParticleName() |
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| 535 | << G4endl; |
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| 536 | } |
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| 537 | |
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| 538 | for(G4int i=0; i<nmat; i++) { |
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| 539 | |
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| 540 | const G4Material* mat = (*mtable)[i]; |
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| 541 | if(1<verbose) |
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| 542 | G4cout << "i= " << i << " mat= " << mat->GetName() << G4endl; |
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| 543 | G4PhysicsVector* aVector = (*table)[i]; |
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[1196] | 544 | for(G4int j=0; j<=nbins; j++) { |
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[961] | 545 | |
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[1196] | 546 | G4double e = aVector->Energy(j); |
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[961] | 547 | G4double xs = msc->CrossSectionPerVolume(mat,part,e); |
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| 548 | aVector->PutValue(j,xs); |
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| 549 | if(1<verbose) { |
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| 550 | G4cout << "j= " << j << " e(MeV)= " << e/MeV |
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| 551 | << " xs(1/mm)= " << xs*mm << G4endl; |
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| 552 | } |
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| 553 | } |
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| 554 | } |
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| 555 | delete msc; |
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| 556 | } |
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| 557 | |
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| 558 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 559 | |
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