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 | #include "G4HadLeadBias.hh" |
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27 | #include "G4Gamma.hh" |
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28 | #include "G4PionZero.hh" |
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29 | #include "Randomize.hh" |
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30 | #include "G4HadFinalState.hh" |
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31 | |
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32 | G4HadFinalState * G4HadLeadBias::Bias(G4HadFinalState * result) |
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33 | { |
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34 | // G4cerr << "bias enter"<<G4endl; |
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35 | G4int nMeson(0), nBaryon(0), npi0(0), ngamma(0), nLepton(0); |
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36 | G4int i(0); |
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37 | G4int maxE = -1; |
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38 | G4double emax = 0; |
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39 | if(result->GetStatusChange()==isAlive) |
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40 | { |
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41 | emax = result->GetEnergyChange(); |
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42 | } |
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43 | //G4cout << "max energy "<<G4endl; |
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44 | for(i=0;i<result->GetNumberOfSecondaries();i++) |
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45 | { |
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46 | if(result->GetSecondary(i)->GetParticle()->GetKineticEnergy()>emax) |
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47 | { |
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48 | maxE = i; |
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49 | emax = result->GetSecondary(i)->GetParticle()->GetKineticEnergy(); |
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50 | } |
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51 | } |
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52 | //G4cout <<"loop1"<<G4endl; |
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53 | for(i=0; i<result->GetNumberOfSecondaries(); i++) |
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54 | { |
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55 | const G4DynamicParticle* aSecTrack = result->GetSecondary(i)->GetParticle(); |
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56 | if(i==maxE) |
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57 | { |
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58 | } |
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59 | else if(aSecTrack->GetDefinition()->GetBaryonNumber()!=0) |
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60 | { |
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61 | nBaryon++; |
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62 | } |
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63 | else if(aSecTrack->GetDefinition()->GetLeptonNumber()!=0) |
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64 | { |
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65 | nLepton++; |
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66 | } |
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67 | else if(aSecTrack->GetDefinition()==G4Gamma::Gamma()) |
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68 | { |
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69 | ngamma++; |
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70 | } |
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71 | else if(aSecTrack->GetDefinition()==G4PionZero::PionZero()) |
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72 | { |
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73 | npi0++; |
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74 | } |
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75 | else |
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76 | { |
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77 | nMeson++; |
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78 | } |
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79 | } |
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80 | //G4cout << "BiasDebug 1 = "<<result->GetNumberOfSecondaries()<<" " |
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81 | // <<nMeson<<" "<< nBaryon<<" "<< npi0<<" "<< ngamma<<" "<< nLepton<<G4endl; |
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82 | G4double mesonWeight = nMeson; |
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83 | G4double baryonWeight = nBaryon; |
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84 | G4double gammaWeight = ngamma; |
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85 | G4double npi0Weight = npi0; |
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86 | G4double leptonWeight = nLepton; |
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87 | G4int randomMeson = static_cast<G4int>((nMeson+1)*G4UniformRand()); |
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88 | G4int randomBaryon = static_cast<G4int>((nBaryon+1)*G4UniformRand()); |
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89 | G4int randomGamma = static_cast<G4int>((ngamma+1)*G4UniformRand()); |
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90 | G4int randomPi0 = static_cast<G4int>((npi0+1)*G4UniformRand()); |
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91 | G4int randomLepton = static_cast<G4int>((nLepton+1)*G4UniformRand()); |
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92 | |
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93 | std::vector<G4HadSecondary *> buffer; |
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94 | G4int cMeson(0), cBaryon(0), cpi0(0), cgamma(0), cLepton(0); |
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95 | for(i=0; i<result->GetNumberOfSecondaries(); i++) |
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96 | { |
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97 | G4bool aCatch = false; |
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98 | G4double weight = 1; |
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99 | G4HadSecondary * aSecTrack = result->GetSecondary(i); |
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100 | if(i==maxE) |
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101 | { |
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102 | aCatch = true; |
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103 | weight = 1; |
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104 | } |
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105 | else if(aSecTrack->GetParticle()->GetDefinition()->GetBaryonNumber()!=0) |
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106 | { |
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107 | if(++cBaryon==randomBaryon) |
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108 | { |
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109 | aCatch = true; |
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110 | weight = baryonWeight; |
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111 | } |
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112 | } |
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113 | else if(aSecTrack->GetParticle()->GetDefinition()->GetLeptonNumber()!=0) |
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114 | { |
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115 | if(++cLepton==randomLepton) |
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116 | { |
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117 | aCatch = true; |
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118 | weight = leptonWeight; |
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119 | } |
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120 | } |
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121 | else if(aSecTrack->GetParticle()->GetDefinition()==G4Gamma::Gamma()) |
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122 | { |
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123 | if(++cgamma==randomGamma) |
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124 | { |
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125 | aCatch = true; |
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126 | weight = gammaWeight; |
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127 | } |
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128 | } |
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129 | else if(aSecTrack->GetParticle()->GetDefinition()==G4PionZero::PionZero()) |
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130 | { |
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131 | if(++cpi0==randomPi0) |
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132 | { |
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133 | aCatch = true; |
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134 | weight = npi0Weight; |
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135 | } |
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136 | } |
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137 | else |
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138 | { |
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139 | if(++cMeson==randomMeson) |
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140 | { |
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141 | aCatch = true; |
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142 | weight = mesonWeight; |
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143 | } |
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144 | } |
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145 | if(aCatch) |
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146 | { |
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147 | buffer.push_back(aSecTrack); |
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148 | aSecTrack->SetWeight(aSecTrack->GetWeight()*weight); |
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149 | } |
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150 | else |
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151 | { |
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152 | delete aSecTrack; |
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153 | } |
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154 | } |
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155 | result->ClearSecondaries(); |
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156 | // G4cerr << "pre"<<G4endl; |
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157 | for(i=0;i<static_cast<G4int>(buffer.size());i++) |
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158 | { |
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159 | result->AddSecondary(buffer[i]); |
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160 | } |
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161 | // G4cerr << "bias exit"<<G4endl; |
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162 | |
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163 | return result; |
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164 | } |
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