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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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: G4CoulombScattering.cc,v 1.25 2009/10/28 10:14:13 vnivanch Exp $ |
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27 | // GEANT4 tag $Name: geant4-09-03 $ |
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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 "G4hCoulombScatteringModel.hh" |
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55 | #include "G4Electron.hh" |
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56 | #include "G4Proton.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 | using namespace std; |
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61 | |
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62 | G4CoulombScattering::G4CoulombScattering(const G4String& name) |
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63 | : G4VEmProcess(name),thetaMin(0.0),thetaMax(pi),q2Max(TeV*TeV), |
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64 | isInitialised(false) |
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65 | { |
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66 | SetBuildTableFlag(true); |
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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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76 | SetProcessSubType(fCoulombScattering); |
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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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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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93 | void G4CoulombScattering::InitialiseProcess(const G4ParticleDefinition* p) |
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94 | { |
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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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104 | isInitialised = true; |
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105 | aParticle = p; |
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106 | G4double mass = p->GetPDGMass(); |
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107 | G4String name = p->GetParticleName(); |
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108 | if (mass > GeV || p->GetParticleType() == "nucleus") { |
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109 | SetBuildTableFlag(false); |
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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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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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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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130 | G4eCoulombScatteringModel* model = new G4eCoulombScatteringModel(); |
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131 | model->SetPolarAngleLimit(PolarAngleLimit()); |
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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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137 | G4CoulombScatteringModel* model = new G4CoulombScatteringModel(); |
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138 | model->SetPolarAngleLimit(PolarAngleLimit()); |
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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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143 | */ |
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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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151 | G4cout << " " << PolarAngleLimit()/degree |
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152 | << " < Theta(degree) < 180" |
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153 | << ", Eth(MeV)= "; |
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154 | |
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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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