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 1.1 2007/08/16 10:32:04 vnivanch Exp $ |
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27 | // GEANT4 tag $Name: $ |
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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 "G4UserLimits.hh" |
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43 | #include "G4PhysicalVolumeStore.hh" |
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44 | #include "G4LogicalVolumeStore.hh" |
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45 | #include "G4SolidStore.hh" |
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46 | |
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47 | #include "G4UnitsTable.hh" |
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48 | #include "G4NistManager.hh" |
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49 | |
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50 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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51 | |
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52 | DetectorConstruction::DetectorConstruction() |
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53 | { |
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54 | // default parameter values |
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55 | absorSizeX = absorSizeYZ = 10 * cm; |
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56 | worldSizeX = worldSizeYZ = 1.2 * absorSizeX; |
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57 | maxStepSize = 5 * mm; |
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58 | |
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59 | worldMaterial = absorMaterial = 0; |
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60 | magField = 0; |
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61 | lAbsor = 0; |
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62 | |
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63 | DefineMaterials(); |
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64 | SetMaterial("G4_Al"); |
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65 | |
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66 | // create commands for interactive definition of the detector |
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67 | detectorMessenger = new DetectorMessenger(this); |
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68 | } |
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69 | |
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70 | |
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71 | |
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72 | DetectorConstruction::~DetectorConstruction() |
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73 | {delete detectorMessenger;} |
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74 | |
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75 | |
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76 | G4VPhysicalVolume* DetectorConstruction::Construct() |
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77 | { return ConstructVolumes();} |
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78 | |
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79 | |
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80 | void DetectorConstruction::DefineMaterials() |
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81 | { |
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82 | /*********************** define Elements *********************/ |
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83 | G4double z, a; |
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84 | |
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85 | G4Element* N = new G4Element("Nitrogen", "N", z= 7, a= 14.01*g/mole); |
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86 | G4Element* O = new G4Element("Oxygen" , "O", z= 8, a= 16.00*g/mole); |
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87 | |
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88 | /*********************** define Materials **********************/ |
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89 | G4double density, temperature, pressure; |
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90 | G4int ncomponents; |
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91 | G4double fractionmass; |
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92 | |
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93 | G4Material* Air = new G4Material("Air" , density = 1.290 * mg/cm3, ncomponents=2); |
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94 | Air->AddElement(N, fractionmass = 0.7); |
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95 | Air->AddElement(O, fractionmass = 0.3); |
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96 | |
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97 | density = universe_mean_density; //from PhysicalConstants.h |
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98 | pressure = 3.e-18 * pascal; |
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99 | temperature = 2.73 * kelvin; |
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100 | |
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101 | G4Material* vacuum = new G4Material("Galactic", z = 1, a = 1.008 * g/mole, density, |
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102 | kStateGas, temperature, pressure); |
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103 | |
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104 | G4cout << *(G4Material::GetMaterialTable()) << G4endl; |
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105 | |
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106 | //default materials |
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107 | worldMaterial = vacuum; |
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108 | } |
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109 | |
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110 | |
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111 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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112 | G4VPhysicalVolume* DetectorConstruction::ConstructVolumes() |
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113 | { |
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114 | G4GeometryManager::GetInstance()->OpenGeometry(); |
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115 | G4PhysicalVolumeStore::GetInstance()->Clean(); |
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116 | G4LogicalVolumeStore::GetInstance()->Clean(); |
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117 | G4SolidStore::GetInstance()->Clean(); |
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118 | |
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119 | |
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120 | |
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121 | /**************************** World *****************************/ |
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122 | G4Box * sWorld = new G4Box("world", //name |
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123 | worldSizeX / 2, worldSizeYZ / 2, worldSizeYZ / 2); //dimensions |
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124 | |
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125 | G4LogicalVolume * lWorld = new G4LogicalVolume(sWorld, //shape |
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126 | worldMaterial, //material |
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127 | "world"); //name |
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128 | |
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129 | G4VPhysicalVolume * pWorld = new G4PVPlacement(0, //no rotation |
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130 | G4ThreeVector(), //at (0,0,0) |
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131 | lWorld, //logical volume |
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132 | "world", //name |
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133 | 0, //mother volume |
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134 | false, //no boolean operation |
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135 | 0); //copy number |
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136 | |
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137 | |
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138 | /************************** Absorber ***************************/ |
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139 | G4Box * sAbsor = new G4Box("Absorber", //name |
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140 | absorSizeX / 2, absorSizeYZ / 2, absorSizeYZ / 2); //dimensions |
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141 | |
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142 | lAbsor = new G4LogicalVolume(sAbsor, //shape |
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143 | absorMaterial, //material |
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144 | "Absorber"); //name |
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145 | |
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146 | |
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147 | new G4PVPlacement(0, //no rotation |
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148 | G4ThreeVector(), //at (0,0,0) |
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149 | lAbsor, //logical volume |
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150 | "Absorber", //name |
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151 | lWorld, //mother volume |
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152 | false, //no boolean operation |
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153 | 0); //copy number |
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154 | lAbsor->SetUserLimits(new G4UserLimits(maxStepSize)); |
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155 | |
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156 | PrintParameters(); |
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157 | |
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158 | /************ always return the World volume *****************/ |
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159 | return pWorld; |
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160 | } |
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161 | |
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162 | |
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163 | |
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164 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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165 | void DetectorConstruction::PrintParameters() |
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166 | { |
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167 | G4cout << "\n---------------------------------------------------------\n"; |
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168 | G4cout << "---> The Absorber is " << G4BestUnit(absorSizeX, "Length") |
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169 | << " of " << absorMaterial->GetName() << G4endl; |
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170 | G4cout << "\n---------------------------------------------------------\n"; |
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171 | |
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172 | } |
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173 | |
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174 | |
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175 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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176 | void DetectorConstruction::SetSizeX(G4double value) |
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177 | { |
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178 | absorSizeX = value; worldSizeX = 1.2 * absorSizeX; |
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179 | } |
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180 | |
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181 | |
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182 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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183 | void DetectorConstruction::SetSizeYZ(G4double value) |
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184 | { |
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185 | absorSizeYZ = value; |
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186 | worldSizeYZ = 1.2 * absorSizeYZ; |
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187 | } |
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188 | |
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189 | |
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190 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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191 | void DetectorConstruction::SetMaterial(G4String materialChoice) |
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192 | { |
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193 | // search the material by its name |
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194 | G4Material * pttoMaterial = G4NistManager::Instance()->FindOrBuildMaterial(materialChoice); |
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195 | if (pttoMaterial) absorMaterial = pttoMaterial; |
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196 | else G4cout << "Material does not exist in DB" << G4endl; |
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197 | } |
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198 | |
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199 | |
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200 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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201 | #include "G4FieldManager.hh" |
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202 | #include "G4TransportationManager.hh" |
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203 | |
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204 | void DetectorConstruction::SetMagField(G4double fieldValue) |
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205 | { |
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206 | //apply a global uniform magnetic field along Z axis |
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207 | G4FieldManager * fieldMgr = G4TransportationManager::GetTransportationManager()->GetFieldManager(); |
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208 | |
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209 | if (magField) delete magField; //delete the existing magn field |
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210 | |
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211 | if (fieldValue != 0.) // create a new one if non nul |
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212 | { |
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213 | magField = new G4UniformMagField(G4ThreeVector(0., 0., fieldValue)); |
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214 | fieldMgr->SetDetectorField(magField); |
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215 | fieldMgr->CreateChordFinder(magField); |
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216 | } |
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217 | else |
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218 | { |
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219 | magField = 0; |
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220 | fieldMgr->SetDetectorField(magField); |
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221 | } |
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222 | } |
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223 | |
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224 | |
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225 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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226 | void DetectorConstruction::SetMaxStepSize(G4double step_) |
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227 | { |
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228 | maxStepSize = step_; |
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229 | if(lAbsor) lAbsor->SetUserLimits(new G4UserLimits(maxStepSize)); |
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230 | } |
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231 | |
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232 | |
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233 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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234 | #include "G4RunManager.hh" |
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235 | |
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236 | void DetectorConstruction::UpdateGeometry() |
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237 | { |
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238 | G4RunManager::GetRunManager()->DefineWorldVolume(ConstructVolumes()); |
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239 | } |
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240 | |
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241 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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