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2 | // ******************************************************************** |
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15 | // * use. Please see the license in the file LICENSE and URL above * |
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24 | // ******************************************************************** |
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25 | // |
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26 | // |
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27 | // $Id: XrayFluoPrimaryGeneratorAction.cc |
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28 | // GEANT4 tag $Name: xray_fluo-V03-02-00 |
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29 | // |
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30 | // Author: Elena Guardincerri (Elena.Guardincerri@ge.infn.it) |
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31 | // |
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32 | // History: |
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33 | // ----------- |
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34 | // 28 Nov 2001 Elena Guardincerri Created |
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35 | // |
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36 | // ------------------------------------------------------------------- |
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37 | |
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38 | #include "XrayFluoPrimaryGeneratorAction.hh" |
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39 | #include "G4DataVector.hh" |
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40 | #include "XrayFluoDetectorConstruction.hh" |
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41 | #include "XrayFluoPrimaryGeneratorMessenger.hh" |
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42 | #include "XrayFluoRunAction.hh" |
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43 | #include "G4Event.hh" |
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44 | #include "G4ParticleGun.hh" |
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45 | #include "G4ParticleTable.hh" |
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46 | #include "G4ParticleDefinition.hh" |
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47 | #include "Randomize.hh" |
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48 | #include "XrayFluoAnalysisManager.hh" |
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49 | #include "XrayFluoDataSet.hh" |
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50 | |
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51 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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52 | |
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53 | XrayFluoPrimaryGeneratorAction::XrayFluoPrimaryGeneratorAction( |
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54 | XrayFluoDetectorConstruction* XrayFluoDC) |
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55 | :XrayFluoDetector(XrayFluoDC),rndmFlag("off"), |
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56 | beam("off"),spectrum("off"),isoVert("off") |
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57 | { |
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58 | G4int n_particle = 1; |
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59 | particleGun = new G4ParticleGun(n_particle); |
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60 | |
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61 | //create a messenger for this class |
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62 | gunMessenger = new XrayFluoPrimaryGeneratorMessenger(this); |
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63 | runManager = new XrayFluoRunAction(); |
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64 | |
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65 | // default particle kinematic |
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66 | |
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67 | G4ParticleTable* particleTable = G4ParticleTable::GetParticleTable(); |
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68 | G4String particleName; |
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69 | G4ParticleDefinition* particle |
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70 | = particleTable->FindParticle(particleName="e-"); |
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71 | particleGun->SetParticleDefinition(particle); |
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72 | particleGun->SetParticleMomentumDirection(G4ThreeVector(0.,0.,1.)); |
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73 | |
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74 | particleGun->SetParticleEnergy(50.*MeV); |
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75 | G4double position = -0.5*(XrayFluoDetector->GetWorldSizeZ()); |
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76 | particleGun->SetParticlePosition(G4ThreeVector(0.*cm,0.*cm,position)); |
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77 | |
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78 | } |
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79 | |
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80 | |
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81 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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82 | |
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83 | XrayFluoPrimaryGeneratorAction::~XrayFluoPrimaryGeneratorAction() |
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84 | { |
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85 | delete particleGun; |
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86 | delete gunMessenger; |
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87 | delete runManager; |
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88 | } |
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89 | |
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90 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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91 | |
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92 | void XrayFluoPrimaryGeneratorAction::GeneratePrimaries(G4Event* anEvent) |
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93 | { |
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94 | //this function is called at the begining of event |
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95 | // |
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96 | G4double z0 = -0.5*(XrayFluoDetector->GetWorldSizeZ()); |
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97 | G4double y0 = 0.*cm, x0 = 0.*cm; |
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98 | if (rndmFlag == "on") |
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99 | {y0 = (XrayFluoDetector->GetSampleSizeXY())*(G4UniformRand()-0.5); |
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100 | x0 = (XrayFluoDetector->GetSampleSizeXY())*(G4UniformRand()-0.5); |
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101 | } |
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102 | particleGun->SetParticlePosition(G4ThreeVector(x0,y0,z0)); |
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103 | |
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104 | //randomize starting point |
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105 | if (beam == "on") |
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106 | { |
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107 | G4double radius = 0.5 * mm; |
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108 | G4double rho = radius*std::sqrt(G4UniformRand()); |
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109 | G4double theta = 2*pi*G4UniformRand()*rad; |
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110 | G4double position = -0.5*(XrayFluoDetector->GetWorldSizeZ()); |
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111 | |
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112 | G4double y = rho * std::sin(theta); |
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113 | G4double x = rho * std::cos(theta); |
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114 | |
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115 | particleGun->SetParticlePosition(G4ThreeVector(x,y,position)); |
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116 | } |
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117 | //shoot particles according to a certain spectrum |
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118 | if (spectrum =="on") |
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119 | { |
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120 | G4String particle = particleGun->GetParticleDefinition() |
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121 | ->GetParticleName(); |
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122 | if(particle == "proton"|| particle == "alpha") |
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123 | { |
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124 | G4DataVector* energies = runManager->GetEnergies(); |
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125 | G4DataVector* data = runManager->GetData(); |
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126 | |
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127 | G4double sum = runManager->GetDataSum(); |
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128 | G4double partSum = 0; |
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129 | G4int j = 0; |
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130 | G4double random= sum*G4UniformRand(); |
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131 | while (partSum<random) |
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132 | { |
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133 | partSum += (*data)[j]; |
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134 | j++; |
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135 | } |
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136 | |
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137 | particleGun->SetParticleEnergy((*energies)[j]); |
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138 | |
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139 | } |
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140 | else if (particle == "gamma") |
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141 | { |
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142 | const XrayFluoDataSet* dataSet = runManager->GetGammaSet(); |
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143 | |
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144 | G4int i = 0; |
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145 | G4int id = 0; |
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146 | G4double minEnergy = 0. * keV; |
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147 | G4double particleEnergy= 0.; |
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148 | G4double maxEnergy = 10. * keV; |
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149 | G4double energyRange = maxEnergy - minEnergy; |
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150 | |
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151 | while ( i == 0) |
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152 | { |
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153 | G4double random = G4UniformRand(); |
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154 | |
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155 | G4double randomNum = G4UniformRand()*5.0E6; |
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156 | |
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157 | particleEnergy = random * energyRange; |
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158 | |
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159 | if ((dataSet->FindValue(particleEnergy,id)) > randomNum) |
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160 | { |
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161 | i = 1; |
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162 | |
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163 | } |
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164 | } |
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165 | particleGun->SetParticleEnergy(particleEnergy); |
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166 | } |
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167 | } |
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168 | |
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169 | if (isoVert == "on") |
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170 | { |
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171 | G4double rho = 1. *m; |
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172 | //theta in [0;pi/2] |
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173 | G4double theta = (pi/2)*G4UniformRand(); |
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174 | //phi in [-pi;pi] |
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175 | G4double phi = (G4UniformRand()*2*pi)- pi; |
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176 | G4double x = rho*std::sin(theta)*std::sin(phi); |
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177 | G4double y = rho*std::sin(theta)*std::cos(phi); |
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178 | G4double z = -(rho*std::cos(theta)); |
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179 | particleGun->SetParticlePosition(G4ThreeVector(x,y,z)); |
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180 | |
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181 | G4double Xdim = XrayFluoDetector->GetSampleSizeXY(); |
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182 | G4double Ydim = XrayFluoDetector->GetSampleSizeXY(); |
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183 | |
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184 | G4double Dx = Xdim*(G4UniformRand()-0.5); |
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185 | |
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186 | G4double Dy = Ydim*(G4UniformRand()-0.5); |
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187 | |
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188 | particleGun->SetParticleMomentumDirection(G4ThreeVector(-x+Dx,-y+Dy,-z)); |
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189 | |
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190 | } |
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191 | #ifdef G4ANALYSIS_USE |
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192 | |
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193 | G4double partEnergy = particleGun->GetParticleEnergy(); |
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194 | XrayFluoAnalysisManager* analysis = XrayFluoAnalysisManager::getInstance(); |
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195 | analysis->analysePrimaryGenerator(partEnergy/keV); |
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196 | |
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197 | #endif |
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198 | |
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199 | particleGun->GeneratePrimaryVertex(anEvent); |
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200 | } |
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201 | |
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202 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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203 | |
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