[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 | // $Id: G4EmMultiModel.cc,v 1.6 2007/05/22 17:31:58 vnivanch Exp $ |
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[1228] | 27 | // GEANT4 tag $Name: geant4-09-03 $ |
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[819] | 28 | // |
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| 29 | // ------------------------------------------------------------------- |
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| 30 | // |
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| 31 | // GEANT4 Class file |
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| 32 | // |
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| 33 | // |
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| 34 | // File name: G4EmMultiModel |
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| 35 | // |
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| 36 | // Author: Vladimir Ivanchenko |
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| 37 | // |
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| 38 | // Creation date: 03.05.2004 |
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| 39 | // |
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| 40 | // Modifications: |
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| 41 | // 15-04-05 optimize internal interface (V.Ivanchenko) |
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| 42 | // |
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| 43 | |
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| 44 | // Class Description: |
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| 45 | // |
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| 46 | // Energy loss model using several G4VEmModels |
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| 47 | |
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| 48 | // ------------------------------------------------------------------- |
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| 49 | // |
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| 50 | |
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| 51 | |
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| 52 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 53 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 54 | |
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| 55 | #include "G4EmMultiModel.hh" |
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| 56 | #include "Randomize.hh" |
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| 57 | |
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| 58 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 59 | |
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| 60 | G4EmMultiModel::G4EmMultiModel(const G4String& nam) |
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| 61 | : G4VEmModel(nam), |
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| 62 | nModels(0) |
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| 63 | { |
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| 64 | model.clear(); |
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| 65 | tsecmin.clear(); |
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| 66 | cross_section.clear(); |
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| 67 | } |
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| 68 | |
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| 69 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 70 | |
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| 71 | G4EmMultiModel::~G4EmMultiModel() |
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| 72 | { |
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| 73 | if(nModels) { |
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| 74 | for(G4int i=0; i<nModels; i++) { |
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| 75 | delete model[i]; |
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| 76 | } |
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| 77 | } |
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| 78 | } |
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| 79 | |
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| 80 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 81 | |
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| 82 | void G4EmMultiModel::Initialise(const G4ParticleDefinition* p, |
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| 83 | const G4DataVector& cuts) |
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| 84 | { |
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| 85 | if(nModels) { |
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| 86 | for(G4int i=0; i<nModels; i++) { |
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| 87 | (model[i])->Initialise(p, cuts); |
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| 88 | } |
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| 89 | } |
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| 90 | } |
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| 91 | |
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| 92 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 93 | |
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| 94 | G4double G4EmMultiModel::MinEnergyCut(const G4ParticleDefinition* p, |
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| 95 | const G4MaterialCutsCouple* couple) |
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| 96 | { |
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| 97 | G4double cut = DBL_MAX; |
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| 98 | if(nModels) { |
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| 99 | cut = (model[0])->MinEnergyCut(p, couple); |
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| 100 | } |
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| 101 | return cut; |
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| 102 | } |
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| 103 | |
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| 104 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 105 | |
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| 106 | G4double G4EmMultiModel::ComputeDEDX(const G4MaterialCutsCouple* couple, |
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| 107 | const G4ParticleDefinition* p, |
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| 108 | G4double kineticEnergy, |
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| 109 | G4double cutEnergy) |
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| 110 | { |
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| 111 | G4double dedx = 0.0; |
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| 112 | |
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| 113 | if(nModels) { |
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| 114 | dedx = (model[0])->ComputeDEDX(couple, p, cutEnergy, kineticEnergy); |
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| 115 | } |
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| 116 | |
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| 117 | return dedx; |
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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 G4EmMultiModel::CrossSection(const G4MaterialCutsCouple* couple, |
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| 123 | const G4ParticleDefinition* p, |
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| 124 | G4double kineticEnergy, |
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| 125 | G4double cutEnergy, |
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| 126 | G4double maxKinEnergy) |
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| 127 | { |
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| 128 | G4double cross = 0.0; |
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| 129 | G4double t1 = cutEnergy; |
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| 130 | G4double t2 = cutEnergy; |
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| 131 | if(nModels) { |
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| 132 | for(G4int i=0; i<nModels; i++) { |
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| 133 | t1 = std::max(t2, tsecmin[i]); |
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| 134 | t2 = std::min(maxKinEnergy, tsecmin[i+1]); |
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| 135 | cross += (model[i])->CrossSection(couple, p, kineticEnergy, t1, t2); |
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| 136 | } |
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| 137 | } |
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| 138 | return cross; |
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| 139 | } |
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| 140 | |
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| 141 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 142 | |
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| 143 | void G4EmMultiModel::SampleSecondaries(std::vector<G4DynamicParticle*>* vdp, |
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| 144 | const G4MaterialCutsCouple* couple, |
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| 145 | const G4DynamicParticle* dp, |
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| 146 | G4double tmin, |
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| 147 | G4double maxEnergy) |
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| 148 | { |
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| 149 | if(nModels > 0) { |
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| 150 | G4int i; |
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| 151 | G4double cross = 0.0; |
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| 152 | G4double t1 = tmin; |
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| 153 | G4double t2 = tmin; |
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| 154 | for(i=0; i<nModels; i++) { |
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| 155 | t1 = std::max(t2, tsecmin[i]); |
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| 156 | t2 = std::min(maxEnergy, tsecmin[i+1]); |
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| 157 | cross += (model[i])->CrossSection(couple, dp->GetDefinition(), |
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| 158 | dp->GetKineticEnergy(), t1, t2); |
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| 159 | cross_section[i] = cross; |
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| 160 | } |
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| 161 | |
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| 162 | cross *= G4UniformRand(); |
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| 163 | t2 = tmin; |
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| 164 | |
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| 165 | for(i=0; i<nModels; i++) { |
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| 166 | t1 = std::max(t2, tsecmin[i]); |
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| 167 | t2 = std::min(maxEnergy, tsecmin[i+1]); |
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| 168 | if(cross <= cross_section[i]) { |
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| 169 | (model[i])->SampleSecondaries(vdp, couple, dp, t1, t2); |
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| 170 | break; |
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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 | |
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| 176 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 177 | |
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| 178 | G4double G4EmMultiModel:: MaxSecondaryEnergy(const G4ParticleDefinition*, |
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| 179 | G4double kinEnergy) |
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| 180 | { |
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| 181 | G4cout << "Warning! G4EmMultiModel::" |
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| 182 | << "MaxSecondaryEnergy(const G4ParticleDefinition*,G4double kinEnergy)" |
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| 183 | << " should not be used!" << G4endl; |
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| 184 | return kinEnergy; |
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| 185 | } |
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| 186 | |
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| 187 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 188 | |
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| 189 | void G4EmMultiModel::DefineForRegion(const G4Region* r) |
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| 190 | { |
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| 191 | if(nModels) { |
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| 192 | for(G4int i=0; i<nModels; i++) {(model[i])->DefineForRegion(r);} |
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| 193 | } |
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| 194 | } |
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| 195 | |
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| 196 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 197 | |
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| 198 | void G4EmMultiModel::AddModel(G4VEmModel* p, G4double tmin, G4double tmax) |
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| 199 | { |
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| 200 | if(tmin < tmax && 0.0 < tmin) { |
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| 201 | |
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| 202 | if(nModels == 0) { |
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| 203 | tsecmin.push_back(tmin); |
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| 204 | tsecmin.push_back(tmax); |
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| 205 | cross_section.push_back(0.0); |
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| 206 | model.push_back(p); |
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| 207 | nModels++; |
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| 208 | |
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| 209 | } else { |
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| 210 | G4int i, j; |
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| 211 | G4bool increment = false; |
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| 212 | for(i=0; i<nModels; i++) { |
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| 213 | |
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| 214 | if(tmin < tsecmin[i]) { |
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| 215 | G4double t2 = std::min(tsecmin[i+1],tmax); |
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| 216 | if(tmin < t2) { |
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| 217 | tsecmin.push_back(0.0); |
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| 218 | cross_section.push_back(0.0); |
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| 219 | model.push_back(0); |
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| 220 | for(j=nModels; j>i; j--) { |
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| 221 | model[j] = model[j-1]; |
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| 222 | tsecmin[j+1] = tsecmin[j]; |
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| 223 | } |
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| 224 | model[i] = p; |
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| 225 | tsecmin[i+1] = t2; |
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| 226 | tsecmin[i] = tmin; |
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| 227 | increment = true; |
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| 228 | } |
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| 229 | } else if(i == nModels-1) { |
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| 230 | G4double t1 = std::min(tsecmin[i+1],tmin); |
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| 231 | G4double t2 = std::max(tsecmin[i+1],tmax); |
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| 232 | if(t1 < t2) { |
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| 233 | tsecmin.push_back(t2); |
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| 234 | cross_section.push_back(0.0); |
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| 235 | model.push_back(p); |
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| 236 | increment = true; |
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| 237 | } |
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| 238 | } |
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| 239 | } |
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| 240 | if(increment) nModels++; |
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| 241 | } |
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| 242 | } |
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| 243 | } |
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| 244 | |
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| 245 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 246 | |
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