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 | /////////////////////////////////////////////////////////////////////////////// |
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27 | // |
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28 | // MODULE: G4GeneralParticleSource.cc |
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29 | // |
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30 | // Version: 2.0 |
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31 | // Date: 5/02/04 |
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32 | // Author: Fan Lei |
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33 | // Organisation: QinetiQ ltd. |
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34 | // Customer: ESA/ESTEC |
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35 | // |
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36 | // Documentation avaialable at http://reat.space.qinetiq.com/gps |
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37 | // These include: |
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38 | // User Requirement Document (URD) |
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39 | // Software Specification Documents (SSD) |
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40 | // Software User Manual (SUM): on-line version available |
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41 | // Technical Note (TN) on the physics and algorithms |
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42 | // |
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43 | /////////////////////////////////////////////////////////////////////////////// |
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44 | // |
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45 | // CHANGE HISTORY |
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46 | // -------------- |
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47 | // |
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48 | // Version 2.0, 05/02/2004, Fan Lei, Created. |
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49 | // After changes to version 1.1 as in Geant4 v6.0 |
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50 | // - Mutilple particle source definition |
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51 | // - Re-structured commands |
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52 | // - Split the task into smaller classes |
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53 | // |
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54 | // - old commonds have been retained for backward compatibility, will be |
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55 | // removed in the future. |
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56 | // |
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57 | // |
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58 | /////////////////////////////////////////////////////////////////////////////// |
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59 | // |
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60 | #include "G4Event.hh" |
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61 | #include "Randomize.hh" |
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62 | #include "G4GeneralParticleSource.hh" |
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63 | |
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64 | G4GeneralParticleSource::G4GeneralParticleSource() |
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65 | : multiple_vertex(false), flat_sampling(false), weight_change(1.) |
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66 | { |
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67 | sourceVector.clear(); |
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68 | sourceIntensity.clear(); |
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69 | sourceProbability.clear(); |
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70 | currentSource = new G4SingleParticleSource(); |
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71 | sourceVector.push_back(currentSource); |
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72 | sourceIntensity.push_back(1.); |
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73 | currentSourceIdx = G4int(sourceVector.size() - 1); |
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74 | theMessenger = new G4GeneralParticleSourceMessenger(this); |
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75 | theMessenger->SetParticleGun(currentSource); |
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76 | IntensityNormalization(); |
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77 | } |
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78 | |
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79 | G4GeneralParticleSource::~G4GeneralParticleSource() |
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80 | { |
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81 | delete theMessenger; |
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82 | } |
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83 | |
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84 | void G4GeneralParticleSource::AddaSource(G4double aV) |
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85 | { |
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86 | currentSource = new G4SingleParticleSource(); |
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87 | theMessenger->SetParticleGun(currentSource); |
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88 | sourceVector.push_back(currentSource); |
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89 | sourceIntensity.push_back(aV); |
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90 | currentSourceIdx = G4int(sourceVector.size() - 1); |
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91 | IntensityNormalization(); |
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92 | } |
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93 | |
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94 | void G4GeneralParticleSource::IntensityNormalization() |
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95 | { |
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96 | G4double total = 0.; |
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97 | size_t i = 0 ; |
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98 | for (i = 0; i < sourceIntensity.size(); i++) |
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99 | total += sourceIntensity[i] ; |
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100 | // |
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101 | sourceProbability.clear(); |
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102 | std::vector <G4double> sourceNormalizedIntensity; |
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103 | sourceNormalizedIntensity.clear(); |
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104 | |
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105 | sourceNormalizedIntensity.push_back(sourceIntensity[0]/total); |
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106 | sourceProbability.push_back(sourceNormalizedIntensity[0]); |
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107 | |
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108 | for ( i = 1 ; i < sourceIntensity.size(); i++) { |
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109 | sourceNormalizedIntensity.push_back(sourceIntensity[i]/total); |
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110 | sourceProbability.push_back(sourceNormalizedIntensity[i] + sourceProbability[i-1]); |
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111 | } |
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112 | |
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113 | // set source weights here based on sampling scheme (analog/flat) and intensities |
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114 | for ( i = 0 ; i < sourceIntensity.size(); i++) { |
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115 | if (!flat_sampling) { |
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116 | sourceVector[i]->GetBiasRndm()->SetIntensityWeight(1.); |
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117 | } else { |
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118 | sourceVector[i]->GetBiasRndm()->SetIntensityWeight(sourceNormalizedIntensity[i]*sourceIntensity.size()); |
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119 | } |
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120 | } |
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121 | |
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122 | normalised = true; |
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123 | } |
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124 | |
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125 | void G4GeneralParticleSource::ListSource() |
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126 | { |
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127 | G4cout << " The number of particle sources is " << sourceIntensity.size() << G4endl; |
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128 | for (size_t i = 0 ; i < sourceIntensity.size(); i++) |
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129 | G4cout << " source " << i << " intensity is " << sourceIntensity[i] << G4endl; |
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130 | } |
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131 | |
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132 | void G4GeneralParticleSource::SetCurrentSourceto(G4int aV) |
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133 | { |
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134 | size_t id = size_t (aV) ; |
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135 | if ( id <= sourceIntensity.size() ) { |
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136 | currentSourceIdx = aV; |
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137 | currentSource = sourceVector[id]; |
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138 | theMessenger->SetParticleGun(currentSource); |
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139 | // |
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140 | } else { |
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141 | G4cout << " source index is invalid " << G4endl; |
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142 | G4cout << " it shall be <= " << sourceIntensity.size() << G4endl; |
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143 | } |
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144 | } |
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145 | |
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146 | void G4GeneralParticleSource::SetCurrentSourceIntensity(G4double aV) |
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147 | { |
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148 | sourceIntensity[currentSourceIdx] = aV; |
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149 | normalised = false; |
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150 | } |
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151 | |
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152 | void G4GeneralParticleSource::ClearAll() |
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153 | { |
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154 | currentSourceIdx = -1; |
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155 | currentSource = 0; |
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156 | sourceVector.clear(); |
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157 | sourceIntensity.clear(); |
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158 | sourceProbability.clear(); |
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159 | } |
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160 | |
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161 | void G4GeneralParticleSource::DeleteaSource(G4int aV) |
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162 | { |
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163 | size_t id = size_t (aV) ; |
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164 | if ( id <= sourceIntensity.size() ) { |
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165 | sourceVector.erase(sourceVector.begin()+aV); |
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166 | sourceIntensity.erase(sourceIntensity.begin()+aV); |
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167 | normalised = false ; |
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168 | if (currentSourceIdx == aV ) { |
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169 | if ( sourceIntensity.size() > 0 ) { |
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170 | currentSource = sourceVector[0]; |
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171 | currentSourceIdx = 1; |
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172 | } else { |
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173 | currentSource = 0; |
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174 | currentSourceIdx = -1; |
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175 | } |
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176 | } |
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177 | } else { |
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178 | G4cout << " source index is invalid " << G4endl; |
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179 | G4cout << " it shall be <= " << sourceIntensity.size() << G4endl; |
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180 | } |
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181 | } |
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182 | |
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183 | void G4GeneralParticleSource::GeneratePrimaryVertex(G4Event* evt) |
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184 | { |
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185 | if (!multiple_vertex){ |
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186 | if (sourceIntensity.size() > 1) { |
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187 | if (!normalised) IntensityNormalization(); |
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188 | G4double rndm = G4UniformRand(); |
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189 | size_t i = 0 ; |
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190 | if (!flat_sampling) { |
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191 | while ( rndm > sourceProbability[i] ) i++; |
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192 | (currentSource = sourceVector[i]); |
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193 | } else { |
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194 | i = size_t (sourceIntensity.size()*rndm); |
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195 | currentSource = sourceVector[i]; |
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196 | } |
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197 | } |
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198 | currentSource-> GeneratePrimaryVertex(evt); |
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199 | } |
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200 | else { |
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201 | for (size_t i = 0; i < sourceIntensity.size(); i++) { |
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202 | sourceVector[i]->GeneratePrimaryVertex(evt); |
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203 | } |
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204 | } |
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205 | } |
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