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 | // $Id: DetectorConstruction.cc,v 1.13 2006/09/25 17:06:29 maire Exp $ |
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27 | // GEANT4 tag $Name: geant4-09-01-patch-02 $ |
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28 | // |
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29 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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30 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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31 | |
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32 | #include "DetectorConstruction.hh" |
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33 | #include "DetectorMessenger.hh" |
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34 | |
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35 | #include "G4Material.hh" |
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36 | #include "G4Box.hh" |
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37 | #include "G4LogicalVolume.hh" |
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38 | #include "G4PVPlacement.hh" |
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39 | #include "G4UniformMagField.hh" |
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40 | |
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41 | #include "G4GeometryManager.hh" |
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42 | #include "G4PhysicalVolumeStore.hh" |
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43 | #include "G4LogicalVolumeStore.hh" |
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44 | #include "G4SolidStore.hh" |
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45 | |
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46 | #include "G4UnitsTable.hh" |
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47 | #include "G4NistManager.hh" |
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48 | |
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49 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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50 | |
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51 | DetectorConstruction::DetectorConstruction() |
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52 | :AbsorberMaterial(0),WorldMaterial(0),defaultWorld(true), |
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53 | solidWorld(0),logicWorld(0),physiWorld(0), |
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54 | solidAbsorber(0),logicAbsorber(0),physiAbsorber(0), |
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55 | magField(0) |
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56 | { |
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57 | // default parameter values of the calorimeter |
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58 | AbsorberThickness = 1.*cm; |
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59 | AbsorberSizeYZ = 2.*cm; |
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60 | XposAbs = 0.*cm; |
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61 | ComputeCalorParameters(); |
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62 | |
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63 | // materials |
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64 | DefineMaterials(); |
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65 | SetWorldMaterial ("Galactic"); |
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66 | SetAbsorberMaterial("Silicon"); |
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67 | |
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68 | // create commands for interactive definition of the calorimeter |
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69 | detectorMessenger = new DetectorMessenger(this); |
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70 | } |
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71 | |
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72 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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73 | |
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74 | DetectorConstruction::~DetectorConstruction() |
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75 | { |
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76 | delete detectorMessenger; |
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77 | } |
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78 | |
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79 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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80 | |
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81 | G4VPhysicalVolume* DetectorConstruction::Construct() |
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82 | { |
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83 | return ConstructCalorimeter(); |
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84 | } |
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85 | |
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86 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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87 | |
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88 | void DetectorConstruction::DefineMaterials() |
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89 | { |
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90 | //This function illustrates the possible ways to define materials |
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91 | |
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92 | G4String symbol; //a=mass of a mole; |
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93 | G4double a, z, density; //z=mean number of protons; |
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94 | |
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95 | G4int ncomponents, natoms; |
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96 | G4double fractionmass; |
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97 | G4double temperature, pressure; |
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98 | |
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99 | // |
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100 | // define Elements |
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101 | // |
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102 | |
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103 | G4Element* H = new G4Element("Hydrogen",symbol="H", z= 1, a= 1.01*g/mole); |
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104 | G4Element* C = new G4Element("Carbon", symbol="C", z= 6, a= 12.01*g/mole); |
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105 | G4Element* N = new G4Element("Nitrogen",symbol="N", z= 7, a= 14.01*g/mole); |
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106 | G4Element* O = new G4Element("Oxygen", symbol="O", z= 8, a= 16.00*g/mole); |
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107 | G4Element* Na = new G4Element("Sodium", symbol="Na", z=11, a= 22.99*g/mole); |
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108 | G4Element* Ar = new G4Element("Argon", symbol="Ar", z=18, a= 39.95*g/mole); |
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109 | G4Element* I = new G4Element("Iodine", symbol="I" , z=53, a= 126.90*g/mole); |
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110 | G4Element* Xe = new G4Element("Xenon", symbol="Xe", z=54, a= 131.29*g/mole); |
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111 | |
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112 | // |
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113 | // define simple materials |
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114 | // |
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115 | |
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116 | new G4Material("H2Liq" , z= 1, a= 1.01*g/mole, density= 70.8*mg/cm3); |
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117 | new G4Material("Beryllium", z= 4, a= 9.01*g/mole, density= 1.848*g/cm3); |
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118 | new G4Material("Aluminium", z=13, a=26.98*g/mole, density= 2.700*g/cm3); |
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119 | new G4Material("Silicon" , z=14, a=28.09*g/mole, density= 2.330*g/cm3); |
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120 | |
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121 | G4Material* lAr = |
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122 | new G4Material("liquidArgon", density= 1.390*g/cm3, ncomponents=1); |
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123 | lAr->AddElement(Ar, natoms=1); |
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124 | |
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125 | new G4Material("Iron", z=26, a= 55.85*g/mole, density= 7.870*g/cm3); |
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126 | new G4Material("Copper", z=29, a= 63.55*g/mole, density= 8.960*g/cm3); |
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127 | new G4Material("Silver", z=47, a=107.87*g/mole, density= 10.50*g/cm3); |
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128 | new G4Material("Tungsten", z=74, a=183.85*g/mole, density= 19.30*g/cm3); |
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129 | new G4Material("Gold", z=79, a=196.97*g/mole, density= 19.32*g/cm3); |
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130 | new G4Material("Lead", z=82, a=207.19*g/mole, density= 11.35*g/cm3); |
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131 | |
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132 | // |
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133 | // define a material from elements. case 1: chemical molecule |
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134 | // |
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135 | |
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136 | G4Material* H2O = new G4Material("Water", density= 1.000*g/cm3, ncomponents=2); |
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137 | H2O->AddElement(H, natoms=2); |
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138 | H2O->AddElement(O, natoms=1); |
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139 | H2O->GetIonisation()->SetMeanExcitationEnergy(75*eV); |
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140 | |
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141 | G4Material* CH = new G4Material("Plastic", density= 1.04*g/cm3, ncomponents=2); |
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142 | CH->AddElement(C, natoms=1); |
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143 | CH->AddElement(H, natoms=1); |
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144 | |
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145 | G4Material* NaI = new G4Material("NaI", density= 3.67*g/cm3, ncomponents=2); |
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146 | NaI->AddElement(Na, natoms=1); |
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147 | NaI->AddElement(I , natoms=1); |
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148 | NaI->GetIonisation()->SetMeanExcitationEnergy(452*eV); |
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149 | |
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150 | // |
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151 | // define a material from elements. case 2: mixture by fractional mass |
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152 | // |
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153 | |
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154 | G4Material* Air = new G4Material("Air", density= 1.290*mg/cm3, ncomponents=2); |
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155 | Air->AddElement(N, fractionmass=0.7); |
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156 | Air->AddElement(O, fractionmass=0.3); |
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157 | |
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158 | G4Material* Air20 = |
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159 | new G4Material("Air20", density= 1.205*mg/cm3, ncomponents=2, |
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160 | kStateGas, 293.*kelvin, 1.*atmosphere); |
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161 | Air20->AddElement(N, fractionmass=0.7); |
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162 | Air20->AddElement(O, fractionmass=0.3); |
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163 | |
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164 | //Graphite |
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165 | // |
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166 | G4Material* Graphite = |
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167 | new G4Material("Graphite", density= 1.7*g/cm3, ncomponents=1); |
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168 | Graphite->AddElement(C, fractionmass=1.); |
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169 | |
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170 | //Havar |
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171 | // |
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172 | G4Element* Cr = new G4Element("Chrome", "Cr", z=25, a= 51.996*g/mole); |
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173 | G4Element* Fe = new G4Element("Iron" , "Fe", z=26, a= 55.845*g/mole); |
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174 | G4Element* Co = new G4Element("Cobalt", "Co", z=27, a= 58.933*g/mole); |
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175 | G4Element* Ni = new G4Element("Nickel", "Ni", z=28, a= 58.693*g/mole); |
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176 | G4Element* W = new G4Element("Tungsten","W", z=74, a= 183.850*g/mole); |
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177 | |
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178 | G4Material* Havar = |
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179 | new G4Material("Havar", density= 8.3*g/cm3, ncomponents=5); |
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180 | Havar->AddElement(Cr, fractionmass=0.1785); |
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181 | Havar->AddElement(Fe, fractionmass=0.1822); |
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182 | Havar->AddElement(Co, fractionmass=0.4452); |
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183 | Havar->AddElement(Ni, fractionmass=0.1310); |
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184 | Havar->AddElement(W , fractionmass=0.0631); |
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185 | |
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186 | // |
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187 | // examples of gas |
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188 | // |
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189 | new G4Material("ArgonGas", z=18, a=39.948*g/mole, density= 1.782*mg/cm3, |
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190 | kStateGas, 273.15*kelvin, 1*atmosphere); |
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191 | |
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192 | new G4Material("XenonGas", z=54, a=131.29*g/mole, density= 5.458*mg/cm3, |
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193 | kStateGas, 293.15*kelvin, 1*atmosphere); |
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194 | |
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195 | G4Material* CO2 = |
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196 | new G4Material("CarbonicGas", density= 1.977*mg/cm3, ncomponents=2); |
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197 | CO2->AddElement(C, natoms=1); |
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198 | CO2->AddElement(O, natoms=2); |
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199 | |
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200 | G4Material* ArCO2 = |
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201 | new G4Material("ArgonCO2", density= 1.8223*mg/cm3, ncomponents=2); |
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202 | ArCO2->AddElement (Ar, fractionmass=0.7844); |
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203 | ArCO2->AddMaterial(CO2, fractionmass=0.2156); |
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204 | |
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205 | //another way to define mixture of gas per volume |
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206 | G4Material* NewArCO2 = |
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207 | new G4Material("NewArgonCO2", density= 1.8223*mg/cm3, ncomponents=3); |
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208 | NewArCO2->AddElement (Ar, natoms=8); |
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209 | NewArCO2->AddElement (C, natoms=2); |
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210 | NewArCO2->AddElement (O, natoms=4); |
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211 | |
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212 | G4Material* ArCH4 = |
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213 | new G4Material("ArgonCH4", density= 1.709*mg/cm3, ncomponents=3); |
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214 | ArCH4->AddElement (Ar, natoms=93); |
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215 | ArCH4->AddElement (C, natoms=7); |
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216 | ArCH4->AddElement (H, natoms=28); |
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217 | |
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218 | G4Material* XeCH = |
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219 | new G4Material("XenonMethanePropane", density= 4.9196*mg/cm3, ncomponents=3, |
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220 | kStateGas, 293.15*kelvin, 1*atmosphere); |
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221 | XeCH->AddElement (Xe, natoms=875); |
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222 | XeCH->AddElement (C, natoms=225); |
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223 | XeCH->AddElement (H, natoms=700); |
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224 | |
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225 | G4Material* steam = |
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226 | new G4Material("WaterSteam", density= 1.0*mg/cm3, ncomponents=1); |
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227 | steam->AddMaterial(H2O, fractionmass=1.); |
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228 | steam->GetIonisation()->SetMeanExcitationEnergy(71.6*eV); |
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229 | |
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230 | // |
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231 | // example of vacuum |
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232 | // |
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233 | |
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234 | density = universe_mean_density; //from PhysicalConstants.h |
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235 | pressure = 3.e-18*pascal; |
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236 | temperature = 2.73*kelvin; |
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237 | new G4Material("Galactic", z=1, a=1.01*g/mole,density, |
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238 | kStateGas,temperature,pressure); |
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239 | } |
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240 | |
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241 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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242 | |
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243 | void DetectorConstruction::ComputeCalorParameters() |
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244 | { |
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245 | // Compute derived parameters of the calorimeter |
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246 | xstartAbs = XposAbs-0.5*AbsorberThickness; |
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247 | xendAbs = XposAbs+0.5*AbsorberThickness; |
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248 | |
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249 | if (defaultWorld) { |
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250 | WorldSizeX = 1.5*AbsorberThickness; WorldSizeYZ= 1.2*AbsorberSizeYZ; |
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251 | } |
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252 | } |
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253 | |
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254 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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255 | |
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256 | G4VPhysicalVolume* DetectorConstruction::ConstructCalorimeter() |
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257 | { |
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258 | // Cleanup old geometry |
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259 | // |
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260 | G4GeometryManager::GetInstance()->OpenGeometry(); |
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261 | G4PhysicalVolumeStore::GetInstance()->Clean(); |
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262 | G4LogicalVolumeStore::GetInstance()->Clean(); |
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263 | G4SolidStore::GetInstance()->Clean(); |
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264 | |
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265 | // complete the Calor parameters definition |
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266 | ComputeCalorParameters(); |
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267 | |
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268 | // World |
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269 | // |
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270 | solidWorld = new G4Box("World", //its name |
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271 | WorldSizeX/2,WorldSizeYZ/2,WorldSizeYZ/2); //its size |
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272 | |
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273 | logicWorld = new G4LogicalVolume(solidWorld, //its solid |
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274 | WorldMaterial, //its material |
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275 | "World"); //its name |
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276 | |
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277 | physiWorld = new G4PVPlacement(0, //no rotation |
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278 | G4ThreeVector(), //at (0,0,0) |
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279 | logicWorld, //its logical volume |
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280 | "World", //its name |
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281 | 0, //its mother volume |
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282 | false, //no boolean operation |
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283 | 0); //copy number |
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284 | |
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285 | // Absorber |
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286 | // |
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287 | solidAbsorber = new G4Box("Absorber", |
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288 | AbsorberThickness/2,AbsorberSizeYZ/2,AbsorberSizeYZ/2); |
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289 | |
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290 | logicAbsorber = new G4LogicalVolume(solidAbsorber, //its solid |
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291 | AbsorberMaterial, //its material |
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292 | "Absorber"); //its name |
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293 | |
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294 | physiAbsorber = new G4PVPlacement(0, //no rotation |
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295 | G4ThreeVector(XposAbs,0.,0.), //its position |
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296 | logicAbsorber, //its logical volume |
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297 | "Absorber", //its name |
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298 | logicWorld, //its mother |
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299 | false, //no boulean operat |
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300 | 0); //copy number |
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301 | |
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302 | PrintCalorParameters(); |
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303 | |
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304 | //always return the physical World |
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305 | // |
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306 | return physiWorld; |
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307 | } |
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308 | |
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309 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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310 | |
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311 | void DetectorConstruction::PrintCalorParameters() |
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312 | { |
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313 | G4cout << "\n" << WorldMaterial << G4endl; |
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314 | G4cout << "\n" << AbsorberMaterial << G4endl; |
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315 | |
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316 | G4cout << "\n The WORLD is made of " << G4BestUnit(WorldSizeX,"Length") |
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317 | << " of " << WorldMaterial->GetName(); |
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318 | G4cout << ". The transverse size (YZ) of the world is " |
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319 | << G4BestUnit(WorldSizeYZ,"Length") << G4endl; |
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320 | G4cout << " The ABSORBER is made of " |
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321 | <<G4BestUnit(AbsorberThickness,"Length") |
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322 | << " of " << AbsorberMaterial->GetName(); |
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323 | G4cout << ". The transverse size (YZ) is " |
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324 | << G4BestUnit(AbsorberSizeYZ,"Length") << G4endl; |
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325 | G4cout << " X position of the middle of the absorber " |
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326 | << G4BestUnit(XposAbs,"Length"); |
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327 | G4cout << G4endl; |
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328 | } |
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329 | |
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330 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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331 | |
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332 | void DetectorConstruction::SetAbsorberMaterial(G4String materialChoice) |
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333 | { |
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334 | // search the material by its name |
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335 | G4Material* pttoMaterial = |
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336 | G4NistManager::Instance()->FindOrBuildMaterial(materialChoice); |
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337 | |
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338 | if (pttoMaterial) AbsorberMaterial = pttoMaterial; |
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339 | } |
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340 | |
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341 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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342 | |
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343 | void DetectorConstruction::SetWorldMaterial(G4String materialChoice) |
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344 | { |
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345 | // search the material by its name |
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346 | G4Material* pttoMaterial = |
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347 | G4NistManager::Instance()->FindOrBuildMaterial(materialChoice); |
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348 | |
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349 | if (pttoMaterial) WorldMaterial = pttoMaterial; |
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350 | } |
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351 | |
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352 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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353 | |
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354 | void DetectorConstruction::SetAbsorberThickness(G4double val) |
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355 | { |
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356 | AbsorberThickness = val; |
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357 | } |
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358 | |
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359 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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360 | |
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361 | void DetectorConstruction::SetAbsorberSizeYZ(G4double val) |
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362 | { |
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363 | AbsorberSizeYZ = val; |
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364 | } |
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365 | |
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366 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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367 | |
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368 | void DetectorConstruction::SetWorldSizeX(G4double val) |
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369 | { |
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370 | WorldSizeX = val; |
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371 | defaultWorld = false; |
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372 | } |
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373 | |
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374 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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375 | |
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376 | void DetectorConstruction::SetWorldSizeYZ(G4double val) |
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377 | { |
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378 | WorldSizeYZ = val; |
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379 | defaultWorld = false; |
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380 | } |
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381 | |
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382 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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383 | |
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384 | void DetectorConstruction::SetAbsorberXpos(G4double val) |
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385 | { |
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386 | XposAbs = val; |
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387 | } |
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388 | |
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389 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo..... |
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390 | |
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391 | #include "G4FieldManager.hh" |
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392 | #include "G4TransportationManager.hh" |
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393 | |
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394 | void DetectorConstruction::SetMagField(G4double fieldValue) |
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395 | { |
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396 | //apply a global uniform magnetic field along Z axis |
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397 | G4FieldManager* fieldMgr |
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398 | = G4TransportationManager::GetTransportationManager()->GetFieldManager(); |
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399 | |
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400 | if(magField) delete magField; //delete the existing magn field |
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401 | |
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402 | if(fieldValue!=0.) // create a new one if non nul |
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403 | { magField = new G4UniformMagField(G4ThreeVector(0.,0.,fieldValue)); |
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404 | fieldMgr->SetDetectorField(magField); |
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405 | fieldMgr->CreateChordFinder(magField); |
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406 | } else { |
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407 | magField = NULL; |
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408 | fieldMgr->SetDetectorField(magField); |
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409 | } |
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410 | } |
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411 | |
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412 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo..... |
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413 | |
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414 | #include "G4RunManager.hh" |
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415 | |
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416 | void DetectorConstruction::UpdateGeometry() |
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417 | { |
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418 | G4RunManager::GetRunManager()->DefineWorldVolume(ConstructCalorimeter()); |
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419 | } |
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420 | |
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421 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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422 | |
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