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 | // Authors: S. Guatelli and M. G. Pia, INFN Genova, Italy |
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27 | // |
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28 | // Based on code developed by the undergraduate student G. Guerrieri |
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29 | // Note: this is a preliminary beta-version of the code; an improved |
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30 | // version will be distributed in the next Geant4 public release, compliant |
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31 | // with the design in a forthcoming publication, and subject to a |
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32 | // design and code review. |
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33 | // |
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34 | #include "G4HumanPhantomPrimaryGeneratorAction.hh" |
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35 | #include "G4HumanPhantomConstruction.hh" |
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36 | #include "G4HumanPhantomPrimaryGeneratorMessenger.hh" |
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37 | |
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38 | #include "G4Event.hh" |
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39 | #include "G4ParticleGun.hh" |
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40 | #include "G4ParticleTable.hh" |
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41 | #include "G4ParticleDefinition.hh" |
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42 | #include "globals.hh" |
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43 | |
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44 | #include "G4RunManager.hh" |
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45 | //#ifdef G$ANALYSIS_USE |
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46 | //#include "G4HumanPhantomAnalysisManager.hh" |
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47 | //#endif |
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48 | |
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49 | #include "G4ios.hh" |
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50 | |
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51 | G4HumanPhantomPrimaryGeneratorAction::G4HumanPhantomPrimaryGeneratorAction() |
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52 | :beamKind("beamAlongZ"),worldLength(200.) |
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53 | { |
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54 | G4int n_particle = 1; |
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55 | |
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56 | messenger= new G4HumanPhantomPrimaryGeneratorMessenger(this); |
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57 | |
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58 | particleGun = new G4ParticleGun(n_particle); |
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59 | |
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60 | probability.push_back(0.1667); |
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61 | probability.push_back(0.1667); |
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62 | probability.push_back(0.1667); |
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63 | probability.push_back(0.1667); |
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64 | probability.push_back(0.1666); |
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65 | probability.push_back(0.1666); |
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66 | |
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67 | // Default Particle |
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68 | G4ParticleTable* particleTable = G4ParticleTable::GetParticleTable(); |
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69 | |
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70 | particleGun->SetParticleDefinition(particleTable->FindParticle("geantino")); |
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71 | particleGun->SetParticleEnergy(100.*MeV); |
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72 | } |
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73 | |
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74 | G4HumanPhantomPrimaryGeneratorAction::~G4HumanPhantomPrimaryGeneratorAction() |
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75 | { |
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76 | delete particleGun; |
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77 | delete messenger; |
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78 | } |
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79 | |
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80 | void G4HumanPhantomPrimaryGeneratorAction::GeneratePrimaries(G4Event* anEvent) |
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81 | { |
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82 | if (beamKind == "beamAlongZ") GenerateBeamAlongZ(); |
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83 | if (beamKind == "beamAlongY") GenerateBeamAlongY(); |
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84 | if (beamKind == "beamAlongX") GenerateBeamAlongX(); |
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85 | if (beamKind == "isotropicFlux") GenerateIsotropicFlux(); |
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86 | |
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87 | particleGun->SetParticlePosition(G4ThreeVector(x0, y0,z0)); |
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88 | particleGun->GeneratePrimaryVertex(anEvent); |
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89 | } |
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90 | |
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91 | void G4HumanPhantomPrimaryGeneratorAction::GenerateBeamAlongZ() |
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92 | { |
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93 | z0 = 0.5*(worldLength)*cm; |
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94 | y0 = (worldLength)*(G4UniformRand()-0.5)*cm; |
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95 | x0 = (worldLength)*(G4UniformRand()-0.5)*cm; |
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96 | |
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97 | //z0 = 0.5*(worldLength)*cm; |
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98 | //y0 = 50. * cm + 5.*(G4UniformRand()-0.5)*cm; |
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99 | //x0 = 10.*(G4UniformRand()-0.5)*cm; |
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100 | |
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101 | G4ThreeVector direction(0.,0.,-1.); |
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102 | |
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103 | |
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104 | particleGun->SetParticleMomentumDirection(direction); |
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105 | } |
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106 | |
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107 | void G4HumanPhantomPrimaryGeneratorAction::GenerateBeamAlongX() |
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108 | { |
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109 | x0 = -0.5*(worldLength)*cm; |
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110 | y0 = (worldLength)*(G4UniformRand()-0.5)*cm; |
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111 | z0 = (worldLength)*(G4UniformRand()-0.5)*cm; |
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112 | |
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113 | G4ThreeVector direction(1.,0.,0.); |
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114 | particleGun->SetParticleMomentumDirection(direction); |
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115 | } |
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116 | void G4HumanPhantomPrimaryGeneratorAction::GenerateBeamAlongY() |
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117 | { |
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118 | y0 = 0.5*(worldLength)*cm; |
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119 | x0 = (worldLength)*(G4UniformRand()-0.5)*cm; |
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120 | z0 = (worldLength)*(G4UniformRand()-0.5)*cm; |
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121 | |
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122 | G4ThreeVector direction(0.,-1.,0.); |
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123 | particleGun->SetParticleMomentumDirection(direction); |
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124 | } |
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125 | |
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126 | void G4HumanPhantomPrimaryGeneratorAction::GenerateIsotropicFlux() |
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127 | { |
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128 | G4double random = G4UniformRand(); |
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129 | G4double sum = 0.; |
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130 | G4int i = 0; |
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131 | |
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132 | while(sum<random){sum += probability[i]; i++;} |
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133 | |
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134 | if(i==1) |
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135 | { |
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136 | z0 = -0.5*(worldLength-2.)*cm; |
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137 | y0 = (worldLength)*(G4UniformRand()-0.5)*cm; |
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138 | x0 = (worldLength)*(G4UniformRand()-0.5)*cm; |
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139 | } |
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140 | |
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141 | if(i==2) |
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142 | { |
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143 | y0 = -0.5*(worldLength-2.)*cm; |
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144 | z0 = (worldLength)*(G4UniformRand()-0.5)*cm; |
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145 | x0 = (worldLength)*(G4UniformRand()-0.5)*cm; |
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146 | } |
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147 | |
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148 | if(i==3) |
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149 | { |
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150 | x0 = -0.5*(worldLength-2.)*cm; |
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151 | z0 = (worldLength)*(G4UniformRand()-0.5)*cm; |
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152 | y0 = (worldLength)*(G4UniformRand()-0.5)*cm; |
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153 | } |
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154 | |
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155 | if (i==4) |
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156 | { |
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157 | z0 = 0.5*(worldLength-2.)*cm; |
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158 | y0 = (worldLength)*(G4UniformRand()-0.5)*cm; |
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159 | x0 = (worldLength)*(G4UniformRand()-0.5)*cm; |
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160 | } |
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161 | |
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162 | if(i==5) |
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163 | { |
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164 | y0 = 0.5*(worldLength-2.)*cm; |
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165 | z0 = (worldLength)*(G4UniformRand()-0.5)*cm; |
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166 | x0 = (worldLength)*(G4UniformRand()-0.5)*cm; |
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167 | } |
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168 | |
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169 | if(i==6) |
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170 | { |
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171 | x0 = 0.5*(worldLength-2.)*cm; |
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172 | z0 = (worldLength)*(G4UniformRand()-0.5)*cm; |
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173 | y0 = (worldLength)*(G4UniformRand()-0.5)*cm; |
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174 | } |
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175 | |
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176 | G4double a,b,c; |
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177 | G4double n; |
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178 | do{ |
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179 | a = (G4UniformRand()-0.5)/0.5; |
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180 | b = (G4UniformRand()-0.5)/0.5; |
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181 | c = (G4UniformRand()-0.5)/0.5; |
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182 | n = a*a+b*b+c*c; |
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183 | }while(n > 1 || n == 0.0); |
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184 | n = std::sqrt(n); |
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185 | a /= n; |
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186 | b /= n; |
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187 | c /= n; |
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188 | |
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189 | G4ThreeVector direction(a,b,c); |
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190 | particleGun->SetParticleMomentumDirection(direction); |
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191 | } |
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192 | |
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193 | void G4HumanPhantomPrimaryGeneratorAction::SetBeam(G4String beam) |
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194 | { |
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195 | if((beam == "beamAlongZ")||(beam == "beamAlongX")|| |
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196 | (beam == "beamAlongY")||(beam == "isotropicFlux")) beamKind = beam; |
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197 | |
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198 | else G4cout<<"This option is not valid "<< |
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199 | "---> beamAlongZ/beamAlongY/beamAlongX/isotropicFlux" |
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200 | <<G4endl; |
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201 | } |
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202 | |
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