[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: G4CoulombScattering.cc,v 1.25 2009/10/28 10:14:13 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: G4CoulombScattering |
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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: 22.08.2004 |
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| 39 | // |
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| 40 | // Modifications: |
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| 41 | // 01.08.06 V.Ivanchenko add choice between G4eCoulombScatteringModel and |
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| 42 | // G4CoulombScatteringModel |
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| 43 | // |
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| 44 | |
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| 45 | // |
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| 46 | // ------------------------------------------------------------------- |
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| 47 | // |
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| 48 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 49 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 50 | |
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| 51 | #include "G4CoulombScattering.hh" |
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| 52 | #include "G4CoulombScatteringModel.hh" |
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| 53 | #include "G4eCoulombScatteringModel.hh" |
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[1196] | 54 | //#include "G4hCoulombScatteringModel.hh" |
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[819] | 55 | #include "G4Electron.hh" |
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[1196] | 56 | #include "G4Proton.hh" |
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[819] | 57 | |
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| 58 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 59 | |
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| 60 | using namespace std; |
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| 61 | |
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| 62 | G4CoulombScattering::G4CoulombScattering(const G4String& name) |
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[961] | 63 | : G4VEmProcess(name),thetaMin(0.0),thetaMax(pi),q2Max(TeV*TeV), |
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[819] | 64 | isInitialised(false) |
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| 65 | { |
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[961] | 66 | SetBuildTableFlag(true); |
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[819] | 67 | SetStartFromNullFlag(false); |
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| 68 | SetIntegral(true); |
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| 69 | thEnergy = PeV; |
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| 70 | thEnergyElec = PeV; |
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| 71 | if(name == "CoulombScat") { |
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| 72 | thEnergy = 10.*MeV; |
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| 73 | thEnergyElec = 10.*GeV; |
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| 74 | } |
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| 75 | SetSecondaryParticle(G4Electron::Electron()); |
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[961] | 76 | SetProcessSubType(fCoulombScattering); |
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[819] | 77 | } |
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| 78 | |
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| 79 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 80 | |
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| 81 | G4CoulombScattering::~G4CoulombScattering() |
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| 82 | {} |
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| 83 | |
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| 84 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 85 | |
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[1055] | 86 | G4bool G4CoulombScattering::IsApplicable(const G4ParticleDefinition& p) |
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| 87 | { |
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| 88 | return (p.GetPDGCharge() != 0.0 && !p.IsShortLived()); |
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| 89 | } |
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| 90 | |
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| 91 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 92 | |
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[819] | 93 | void G4CoulombScattering::InitialiseProcess(const G4ParticleDefinition* p) |
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| 94 | { |
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[961] | 95 | // second initialisation |
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| 96 | if(isInitialised) { |
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| 97 | G4VEmModel* mod = GetModelByIndex(0); |
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| 98 | mod->SetPolarAngleLimit(PolarAngleLimit()); |
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| 99 | mod = GetModelByIndex(1); |
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| 100 | if(mod) mod->SetPolarAngleLimit(PolarAngleLimit()); |
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| 101 | |
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| 102 | // first initialisation |
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| 103 | } else { |
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[819] | 104 | isInitialised = true; |
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| 105 | aParticle = p; |
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| 106 | G4double mass = p->GetPDGMass(); |
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[1196] | 107 | G4String name = p->GetParticleName(); |
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[819] | 108 | if (mass > GeV || p->GetParticleType() == "nucleus") { |
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[961] | 109 | SetBuildTableFlag(false); |
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[819] | 110 | verboseLevel = 0; |
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| 111 | } else { |
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| 112 | if(name != "e-" && name != "e+" && |
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| 113 | name != "mu+" && name != "mu-" && name != "pi+" && |
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| 114 | name != "kaon+" && name != "proton" ) verboseLevel = 0; |
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| 115 | } |
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| 116 | |
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| 117 | G4double emin = MinKinEnergy(); |
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| 118 | G4double emax = MaxKinEnergy(); |
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[1196] | 119 | // G4gCoulombScatteringModel* model = new G4hCoulombScatteringModel(); |
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| 120 | G4eCoulombScatteringModel* model = new G4eCoulombScatteringModel(); |
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| 121 | model->SetPolarAngleLimit(PolarAngleLimit()); |
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| 122 | model->SetLowEnergyLimit(emin); |
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| 123 | model->SetHighEnergyLimit(emax); |
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| 124 | AddEmModel(1, model); |
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| 125 | /* |
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| 126 | |
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[819] | 127 | G4double eth = thEnergy; |
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| 128 | if(mass < MeV) eth = thEnergyElec; |
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| 129 | if(eth > emin) { |
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[961] | 130 | G4eCoulombScatteringModel* model = new G4eCoulombScatteringModel(); |
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| 131 | model->SetPolarAngleLimit(PolarAngleLimit()); |
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[819] | 132 | model->SetLowEnergyLimit(emin); |
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| 133 | model->SetHighEnergyLimit(std::min(eth,emax)); |
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| 134 | AddEmModel(1, model); |
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| 135 | } |
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| 136 | if(eth < emax) { |
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[961] | 137 | G4CoulombScatteringModel* model = new G4CoulombScatteringModel(); |
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| 138 | model->SetPolarAngleLimit(PolarAngleLimit()); |
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[819] | 139 | model->SetLowEnergyLimit(eth); |
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| 140 | model->SetHighEnergyLimit(emax); |
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| 141 | AddEmModel(2, model); |
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| 142 | } |
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[1196] | 143 | */ |
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[819] | 144 | } |
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| 145 | } |
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| 146 | |
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| 147 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 148 | |
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| 149 | void G4CoulombScattering::PrintInfo() |
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| 150 | { |
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[961] | 151 | G4cout << " " << PolarAngleLimit()/degree |
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[1196] | 152 | << " < Theta(degree) < 180" |
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[961] | 153 | << ", Eth(MeV)= "; |
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[1196] | 154 | |
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[819] | 155 | if(aParticle->GetPDGMass() < MeV) G4cout << thEnergyElec; |
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| 156 | else G4cout << thEnergy; |
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| 157 | |
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| 158 | if(q2Max < DBL_MAX) G4cout << "; q2Max(GeV^2)= " << q2Max/(GeV*GeV); |
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| 159 | G4cout << G4endl; |
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| 160 | } |
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| 161 | |
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| 162 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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