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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: XrayFluoPlanePrimaryGeneratorAction.cc |
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28 | // GEANT4 tag $Name: |
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29 | // |
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30 | // Author: Alfonso Mantero (Alfonso.Mantero@ge.infn.it) |
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31 | // |
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32 | // History: |
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33 | // ----------- |
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34 | // 02 Sep 2003 Alfonso Mantero created |
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35 | // |
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36 | // ------------------------------------------------------------------- |
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37 | |
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38 | #include "XrayFluoMercuryPrimaryGeneratorAction.hh" |
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39 | #include "G4DataVector.hh" |
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40 | #include "XrayFluoMercuryDetectorConstruction.hh" |
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41 | #include "XrayFluoMercuryPrimaryGeneratorMessenger.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 | XrayFluoMercuryPrimaryGeneratorAction::XrayFluoMercuryPrimaryGeneratorAction(XrayFluoMercuryDetectorConstruction* XrayFluoDC) |
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54 | :globalFlag(false),spectrum("off") |
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55 | { |
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56 | |
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57 | XrayFluoDetector = XrayFluoDC; |
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58 | |
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59 | G4int n_particle = 1; |
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60 | particleGun = new G4ParticleGun(n_particle); |
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61 | |
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62 | //create a messenger for this class |
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63 | gunMessenger = new XrayFluoMercuryPrimaryGeneratorMessenger(this); |
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64 | runManager = new XrayFluoRunAction(); |
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65 | |
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66 | // default particle kinematic |
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67 | |
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68 | G4ParticleTable* particleTable = G4ParticleTable::GetParticleTable(); |
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69 | G4String particleName; |
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70 | G4ParticleDefinition* particle |
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71 | = particleTable->FindParticle(particleName="gamma"); |
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72 | particleGun->SetParticleDefinition(particle); |
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73 | particleGun->SetParticleMomentumDirection(G4ThreeVector(0.,0.,-1.)); |
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74 | |
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75 | |
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76 | particleGun->SetParticleEnergy(10.*keV); |
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77 | G4double position = -0.5*(XrayFluoDetector->GetWorldSizeZ()); |
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78 | particleGun->SetParticlePosition(G4ThreeVector(0.*cm,0.*cm,position)); |
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79 | |
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80 | G4cout << "XrayFluoMercuryPrimaryGeneratorAction created" << G4endl; |
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81 | |
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82 | } |
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83 | |
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84 | |
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85 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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86 | |
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87 | XrayFluoMercuryPrimaryGeneratorAction::~XrayFluoMercuryPrimaryGeneratorAction() |
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88 | { |
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89 | delete particleGun; |
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90 | delete gunMessenger; |
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91 | delete runManager; |
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92 | |
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93 | G4cout << "XrayFluoMercuryPrimaryGeneratorAction deleted" << G4endl; |
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94 | |
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95 | } |
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96 | |
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97 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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98 | |
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99 | void XrayFluoMercuryPrimaryGeneratorAction::GeneratePrimaries(G4Event* anEvent) |
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100 | { |
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101 | //this function is called at the begining of event |
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102 | // |
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103 | |
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104 | // Conidering the sunas a Poin-like source. |
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105 | |
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106 | G4double z0 = -0.5*(XrayFluoDetector->GetWorldSizeZ()); |
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107 | G4double y0 = 0.*m, x0 = 0.*m; |
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108 | |
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109 | |
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110 | // Let's try to illuminate only the prtion of Mercury surface that can be seen by the detector. |
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111 | |
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112 | G4double spacecraftLatitude = XrayFluoDetector->GetOrbitInclination(); |
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113 | G4double mercuryDia = XrayFluoDetector->GetMercuryDia(); |
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114 | G4double sunDia = XrayFluoDetector->GetSunDia(); |
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115 | G4double opticField = XrayFluoDetector->GetOpticAperture(); |
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116 | |
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117 | |
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118 | G4double a = 2*std::tan(opticField/2); |
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119 | |
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120 | // if (!pointLikeFlag) { |
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121 | |
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122 | // let's decide from wich point of the sun surface the particle is coming: |
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123 | |
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124 | G4double theta = pi/2. * G4UniformRand(); |
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125 | G4double phi = 2. * pi * G4UniformRand(); |
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126 | G4double rho = sunDia/2; |
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127 | |
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128 | G4double sunPosX = x0 + rho * std::sin(theta) * std::cos(phi); |
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129 | G4double sunPosY = y0 + rho * std::sin(theta) * std::sin(phi); |
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130 | G4double sunPosZ = z0 + rho * std::cos(theta); |
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131 | |
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132 | particleGun->SetParticlePosition(G4ThreeVector(sunPosX,sunPosY,sunPosZ)); |
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133 | |
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134 | // the angle at the center of Mercury subtending the area seen by the optics: |
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135 | G4double alpha = 2 * a/mercuryDia; |
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136 | |
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137 | if(!globalFlag){ |
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138 | theta = alpha * G4UniformRand() + (180.*deg - spacecraftLatitude)-alpha/2.; |
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139 | phi = alpha * G4UniformRand() + 90. * deg - alpha/2.; |
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140 | } |
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141 | |
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142 | else if(globalFlag){ |
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143 | theta = pi/2. * rad * G4UniformRand() + 90.*deg ; //was 900., probably an error |
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144 | phi = 2*pi*rad * G4UniformRand() ; |
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145 | } |
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146 | |
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147 | rho = mercuryDia/2.; |
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148 | |
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149 | G4double mercuryPosX = rho * std::sin(theta) * std::cos(phi); |
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150 | G4double mercuryPosY = rho * std::sin(theta) * std::sin(phi); |
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151 | G4double mercuryPosZ = rho * std::cos(theta); |
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152 | |
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153 | particleGun->SetParticleMomentumDirection( |
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154 | G4ThreeVector(mercuryPosX-sunPosX ,mercuryPosY-sunPosY,mercuryPosZ-sunPosZ)); |
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155 | |
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156 | // } |
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157 | // if (pointLikeFlag) { |
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158 | |
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159 | // // theta is the angle that the mean direction of the incident light (on the desired |
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160 | // // point of the surface of Mercury) makes with the Z-axis |
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161 | // G4double theta = std::asin( mercuryDia/2. * std::sin(spacecraftLatitude) / |
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162 | // std::sqrt(std::pow(z0,2)+std::pow(mercuryDia/2.,2)-2*mercuryDia/2.*z0*std::cos(spacecraftLatitude)) ); |
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163 | |
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164 | // // on the y axis, the light emitted from the Sun must be in [theta-phi;theta+phi] |
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165 | // G4double phi = std::asin( mercuryDia/2.*std::sin(spacecraftLatitude) + a*std::cos(spacecraftLatitude) / |
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166 | // std::sqrt( std::pow(mercuryDia/2.*std::sin(spacecraftLatitude) + a*std::cos(spacecraftLatitude) , 2) + |
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167 | // std::pow(z0 - mercuryDia/2.*std::cos(spacecraftLatitude) - a*std::sin(spacecraftLatitude) , 2)) ) |
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168 | // - theta; |
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169 | |
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170 | // // on the x axis, the light emitted from the Sun must be in [-zeta;zeta] |
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171 | // G4double zeta = std::atan( a/std::sqrt(std::pow(z0,2)+std::pow(mercuryDia,2)-2*mercuryDia*z0*std::cos(spacecraftLatitude)) ); |
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172 | |
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173 | |
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174 | |
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175 | // //alpha in [-zeta;zeta] |
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176 | // G4double alpha = (2*zeta)*G4UniformRand() - zeta; |
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177 | // //beta in [theta-phi;theta+phi] |
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178 | // G4double beta = (G4UniformRand()*2*phi) - phi + theta; |
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179 | |
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180 | // G4double dirY = std::sin(beta); |
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181 | // G4double dirX = std::sin(alpha); |
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182 | |
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183 | // particleGun->SetParticleMomentumDirection(G4ThreeVector(dirX.,dirY,1.)); |
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184 | |
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185 | // particleGun->SetParticlePosition(G4ThreeVector(x0,y0,z0)); |
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186 | |
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187 | // } |
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188 | |
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189 | |
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190 | |
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191 | //shoot particles according to a certain spectrum |
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192 | if (spectrum =="on") |
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193 | { |
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194 | G4String particle = particleGun->GetParticleDefinition() |
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195 | ->GetParticleName(); |
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196 | if(particle == "proton"|| particle == "alpha") |
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197 | { |
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198 | G4DataVector* energies = runManager->GetEnergies(); |
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199 | G4DataVector* data = runManager->GetData(); |
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200 | |
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201 | G4double sum = runManager->GetDataSum(); |
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202 | G4double partSum = 0; |
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203 | G4int j = 0; |
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204 | G4double random= sum*G4UniformRand(); |
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205 | while (partSum<random) |
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206 | { |
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207 | partSum += (*data)[j]; |
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208 | j++; |
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209 | } |
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210 | |
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211 | particleGun->SetParticleEnergy((*energies)[j]); |
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212 | |
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213 | } |
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214 | else if (particle == "gamma") |
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215 | { |
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216 | const XrayFluoDataSet* dataSet = runManager->GetGammaSet(); |
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217 | |
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218 | G4int i = 0; |
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219 | G4int id = 0; |
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220 | G4double minEnergy = 0. * keV; |
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221 | G4double particleEnergy= 0.; |
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222 | G4double maxEnergy = 10. * keV; |
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223 | G4double energyRange = maxEnergy - minEnergy; |
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224 | |
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225 | while ( i == 0) |
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226 | { |
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227 | G4double random = G4UniformRand(); |
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228 | |
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229 | G4double randomNum = G4UniformRand(); //*5.0E6; |
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230 | |
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231 | particleEnergy = (random*energyRange) + minEnergy; |
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232 | |
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233 | if ((dataSet->FindValue(particleEnergy,id)) > randomNum) |
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234 | { |
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235 | i = 1; |
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236 | |
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237 | } |
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238 | } |
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239 | particleGun->SetParticleEnergy(particleEnergy); |
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240 | } |
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241 | } |
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242 | |
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243 | |
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244 | #ifdef G4ANALYSIS_USE |
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245 | |
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246 | G4double partEnergy = particleGun->GetParticleEnergy(); |
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247 | XrayFluoAnalysisManager* analysis = XrayFluoAnalysisManager::getInstance(); |
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248 | analysis->analysePrimaryGenerator(partEnergy/keV); |
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249 | |
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250 | #endif |
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251 | |
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252 | particleGun->GeneratePrimaryVertex(anEvent); |
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253 | } |
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254 | |
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255 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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256 | |
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264 | |
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