[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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[1055] | 26 | // $Id: G4CoulombScattering.cc,v 1.20 2009/02/20 12:06:37 vnivanch Exp $ |
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| 27 | // GEANT4 tag $Name: geant4-09-03-beta-cand-01 $ |
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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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| 54 | #include "G4Electron.hh" |
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| 55 | |
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| 56 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 57 | |
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| 58 | using namespace std; |
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| 59 | |
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| 60 | G4CoulombScattering::G4CoulombScattering(const G4String& name) |
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[961] | 61 | : G4VEmProcess(name),thetaMin(0.0),thetaMax(pi),q2Max(TeV*TeV), |
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[819] | 62 | isInitialised(false) |
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| 63 | { |
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[961] | 64 | SetBuildTableFlag(true); |
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[819] | 65 | SetStartFromNullFlag(false); |
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| 66 | SetIntegral(true); |
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| 67 | thEnergy = PeV; |
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| 68 | thEnergyElec = PeV; |
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| 69 | if(name == "CoulombScat") { |
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| 70 | thEnergy = 10.*MeV; |
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| 71 | thEnergyElec = 10.*GeV; |
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| 72 | } |
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| 73 | SetSecondaryParticle(G4Electron::Electron()); |
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[961] | 74 | SetProcessSubType(fCoulombScattering); |
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[819] | 75 | } |
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| 76 | |
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| 77 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 78 | |
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| 79 | G4CoulombScattering::~G4CoulombScattering() |
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| 80 | {} |
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| 81 | |
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| 82 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 83 | |
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[1055] | 84 | G4bool G4CoulombScattering::IsApplicable(const G4ParticleDefinition& p) |
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| 85 | { |
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| 86 | return (p.GetPDGCharge() != 0.0 && !p.IsShortLived()); |
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| 87 | } |
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| 88 | |
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| 89 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 90 | |
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[819] | 91 | void G4CoulombScattering::InitialiseProcess(const G4ParticleDefinition* p) |
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| 92 | { |
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[961] | 93 | // second initialisation |
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| 94 | if(isInitialised) { |
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| 95 | G4VEmModel* mod = GetModelByIndex(0); |
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| 96 | mod->SetPolarAngleLimit(PolarAngleLimit()); |
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| 97 | mod = GetModelByIndex(1); |
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| 98 | if(mod) mod->SetPolarAngleLimit(PolarAngleLimit()); |
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| 99 | |
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| 100 | // first initialisation |
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| 101 | } else { |
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[819] | 102 | isInitialised = true; |
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| 103 | aParticle = p; |
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| 104 | G4double mass = p->GetPDGMass(); |
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| 105 | if (mass > GeV || p->GetParticleType() == "nucleus") { |
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[961] | 106 | SetBuildTableFlag(false); |
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[819] | 107 | verboseLevel = 0; |
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| 108 | } else { |
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| 109 | G4String name = p->GetParticleName(); |
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| 110 | if(name != "e-" && name != "e+" && |
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| 111 | name != "mu+" && name != "mu-" && name != "pi+" && |
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| 112 | name != "kaon+" && name != "proton" ) verboseLevel = 0; |
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| 113 | } |
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| 114 | |
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| 115 | G4double emin = MinKinEnergy(); |
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| 116 | G4double emax = MaxKinEnergy(); |
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| 117 | G4double eth = thEnergy; |
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| 118 | if(mass < MeV) eth = thEnergyElec; |
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| 119 | if(eth > emin) { |
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[961] | 120 | G4eCoulombScatteringModel* model = new G4eCoulombScatteringModel(); |
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| 121 | model->SetPolarAngleLimit(PolarAngleLimit()); |
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[819] | 122 | model->SetLowEnergyLimit(emin); |
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| 123 | model->SetHighEnergyLimit(std::min(eth,emax)); |
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| 124 | AddEmModel(1, model); |
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| 125 | } |
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| 126 | if(eth < emax) { |
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[961] | 127 | G4CoulombScatteringModel* model = new G4CoulombScatteringModel(); |
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| 128 | model->SetPolarAngleLimit(PolarAngleLimit()); |
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[819] | 129 | model->SetLowEnergyLimit(eth); |
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| 130 | model->SetHighEnergyLimit(emax); |
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| 131 | AddEmModel(2, model); |
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| 132 | } |
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| 133 | } |
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| 134 | } |
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| 135 | |
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| 136 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 137 | |
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| 138 | void G4CoulombScattering::PrintInfo() |
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| 139 | { |
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[961] | 140 | G4cout << " " << PolarAngleLimit()/degree |
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| 141 | << " < Theta(degree) < 180" |
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| 142 | << ", Eth(MeV)= "; |
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[819] | 143 | if(aParticle->GetPDGMass() < MeV) G4cout << thEnergyElec; |
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| 144 | else G4cout << thEnergy; |
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| 145 | |
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| 146 | if(q2Max < DBL_MAX) G4cout << "; q2Max(GeV^2)= " << q2Max/(GeV*GeV); |
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| 147 | G4cout << G4endl; |
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| 148 | } |
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| 149 | |
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| 150 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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