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: G4MuPairProduction.cc,v 1.52 2009/02/20 14:48:16 vnivanch Exp $ |
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27 | // GEANT4 tag $Name: geant4-09-04-beta-01 $ |
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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: G4MuPairProduction |
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35 | // |
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36 | // Author: Laszlo Urban |
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37 | // |
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38 | // Creation date: 30.05.1998 |
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39 | // |
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40 | // Modifications: |
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41 | // |
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42 | // 04-06-98 in DoIt,secondary production condition: |
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43 | // range>std::min(threshold,safety) |
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44 | // 26-10-98 new stuff from R. Kokoulin + cleanup , L.Urban |
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45 | // 06-05-99 bug fixed , L.Urban |
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46 | // 10-02-00 modifications+bug fix , new e.m. structure, L.Urban |
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47 | // 29-05-01 V.Ivanchenko minor changes to provide ANSI -wall compilation |
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48 | // 10-08-01 new methods Store/Retrieve PhysicsTable (mma) |
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49 | // 17-09-01 migration of Materials to pure STL (mma) |
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50 | // 20-09-01 (L.Urban) in ComputeMicroscopicCrossSection, remove: |
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51 | // if(MaxPairEnergy<CutInPairEnergy) MaxPairEnergy=CutInPairEnergy |
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52 | // 26-09-01 completion of store/retrieve PhysicsTable |
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53 | // 28-09-01 suppression of theMuonPlus ..etc..data members (mma) |
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54 | // 29-10-01 all static functions no more inlined (mma) |
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55 | // 07-11-01 particleMass becomes a local variable (mma) |
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56 | // 19-08-02 V.Ivanchenko update to new design |
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57 | // 23-12-02 Change interface in order to move to cut per region (V.Ivanchenko) |
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58 | // 26-12-02 Secondary production moved to derived classes (V.Ivanchenko) |
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59 | // 13-02-03 SubCutoff regime is assigned to a region (V.Ivanchenko) |
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60 | // 08-08-03 STD substitute standard (V.Ivanchenko) |
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61 | // 27-09-03 e+ set to be a secondary particle (V.Ivanchenko) |
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62 | // 12-11-03 G4EnergyLossSTD -> G4EnergyLossProcess (V.Ivanchenko) |
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63 | // 10-02-04 Add lowestKinEnergy (V.Ivanchenko) |
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64 | // 17-08-04 Utilise mu+ tables for mu- (V.Ivanchenko) |
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65 | // 08-11-04 Migration to new interface of Store/Retrieve tables (V.Ivantchenko) |
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66 | // 08-04-05 Major optimisation of internal interfaces (V.Ivantchenko) |
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67 | // |
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68 | // ------------------------------------------------------------------- |
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69 | // |
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70 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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71 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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72 | |
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73 | #include "G4MuPairProduction.hh" |
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74 | #include "G4Electron.hh" |
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75 | #include "G4Positron.hh" |
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76 | #include "G4MuonPlus.hh" |
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77 | #include "G4MuonMinus.hh" |
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78 | #include "G4MuPairProductionModel.hh" |
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79 | #include "G4UniversalFluctuation.hh" |
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80 | |
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81 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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82 | |
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83 | using namespace std; |
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84 | |
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85 | G4MuPairProduction::G4MuPairProduction(const G4String& name) |
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86 | : G4VEnergyLossProcess(name), |
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87 | theParticle(0), |
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88 | theBaseParticle(0), |
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89 | lowestKinEnergy(1.*GeV), |
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90 | isInitialised(false) |
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91 | { |
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92 | SetProcessSubType(fPairProdByCharged); |
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93 | } |
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94 | |
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95 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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96 | |
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97 | G4MuPairProduction::~G4MuPairProduction() |
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98 | {} |
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99 | |
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100 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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101 | |
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102 | G4bool G4MuPairProduction::IsApplicable(const G4ParticleDefinition& p) |
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103 | { |
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104 | return (p.GetPDGCharge() != 0.0 && p.GetPDGMass() > 10.0*MeV); |
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105 | } |
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106 | |
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107 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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108 | |
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109 | G4double G4MuPairProduction::MinPrimaryEnergy(const G4ParticleDefinition*, |
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110 | const G4Material*, |
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111 | G4double) |
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112 | { |
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113 | return lowestKinEnergy; |
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114 | } |
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115 | |
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116 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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117 | |
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118 | void G4MuPairProduction::InitialiseEnergyLossProcess( |
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119 | const G4ParticleDefinition* part, |
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120 | const G4ParticleDefinition*) |
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121 | { |
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122 | if (!isInitialised) { |
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123 | isInitialised = true; |
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124 | |
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125 | theParticle = part; |
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126 | SetSecondaryParticle(G4Positron::Positron()); |
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127 | SetIonisation(false); |
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128 | |
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129 | G4MuPairProductionModel* em = new G4MuPairProductionModel(); |
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130 | em->SetLowestKineticEnergy(lowestKinEnergy); |
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131 | G4VEmFluctuationModel* fm = 0; |
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132 | em->SetLowEnergyLimit(MinKinEnergy()); |
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133 | em->SetHighEnergyLimit(MaxKinEnergy()); |
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134 | AddEmModel(1, em, fm); |
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135 | } |
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136 | } |
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137 | |
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138 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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139 | |
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140 | void G4MuPairProduction::PrintInfo() |
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141 | {} |
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142 | |
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143 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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144 | |
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145 | |
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146 | |
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147 | |
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