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2 | // ******************************************************************** |
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3 | // * License and Disclaimer * |
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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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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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24 | // ******************************************************************** |
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25 | // |
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26 | // |
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27 | // $Id: DetectorConstruction.cc,v 1.1 2006/11/22 14:51:29 gcosmo Exp $ |
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28 | // GEANT4 tag $Name: $ |
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29 | // |
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30 | // |
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31 | // -------------------------------------------------------------- |
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32 | // GEANT 4 - DetectorConstruction class |
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33 | // -------------------------------------------------------------- |
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34 | // |
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35 | // Author: Witold POKORSKI (Witold.Pokorski@cern.ch) |
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36 | // |
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37 | // -------------------------------------------------------------- |
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38 | |
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39 | #include "DetectorConstruction.hh" |
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40 | #include "G4Material.hh" |
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41 | #include "G4Box.hh" |
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42 | #include "G4LogicalVolume.hh" |
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43 | #include "G4ThreeVector.hh" |
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44 | #include "G4PVPlacement.hh" |
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45 | #include "globals.hh" |
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46 | |
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47 | DetectorConstruction::DetectorConstruction() : |
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48 | Iron(0), Copper(0), Tungsten(0), Lead(0), Uranium(0), PbWO4(0), |
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49 | Polystyrene(0), LiquidArgon(0), |
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50 | theAbsorberMaterial(0), |
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51 | logicAbsorber(0), physiAbsorber(0) {} |
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52 | |
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53 | |
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54 | DetectorConstruction::~DetectorConstruction() {} |
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55 | |
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56 | |
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57 | G4VPhysicalVolume* DetectorConstruction::Construct() |
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58 | { |
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59 | //------------------- materials ------------------------ |
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60 | |
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61 | G4double a; // atomic mass |
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62 | G4double z; // atomic number |
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63 | G4double density, pressure, temperature, fractionmass; |
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64 | G4String name, symbol; |
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65 | G4int nel, natoms; |
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66 | |
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67 | //--- elements |
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68 | |
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69 | a = 1.01*g/mole; |
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70 | G4Element* elH = new G4Element(name="Hydrogen", symbol="H2", z=1., a); |
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71 | |
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72 | a = 12.01*g/mole; |
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73 | G4Element* elC = new G4Element(name="Carbon", symbol="C", z=6., a); |
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74 | |
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75 | a = 14.01*g/mole; |
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76 | G4Element* elN = new G4Element(name="Nitrogen", symbol="N2", z=7., a); |
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77 | |
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78 | a = 16.00*g/mole; |
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79 | G4Element* elO = new G4Element(name="Oxygen", symbol="O2", z=8., a); |
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80 | |
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81 | a = 183.85*g/mole; |
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82 | G4Element* elW = new G4Element(name="Tungsten", symbol="W", z=74., a); |
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83 | |
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84 | a = 207.19*g/mole; |
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85 | G4Element* elPb = new G4Element(name="Lead", symbol="Pb", z=82., a); |
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86 | |
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87 | //--- simple materials |
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88 | |
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89 | // Iron has a X0 = 1.7585 cm and lambda_I = 16.760 cm. |
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90 | density = 7.87*g/cm3; |
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91 | a = 55.85*g/mole; |
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92 | Iron = new G4Material(name="Iron", z=26., a, density); |
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93 | |
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94 | // Copper has a X0 = 1.4353 cm and lambda_I = 15.056 cm. |
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95 | density = 8.96*g/cm3; |
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96 | a = 63.55*g/mole; |
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97 | Copper = new G4Material(name="Copper", z=29., a, density); |
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98 | |
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99 | // Tungsten has a X0 = 0.35 cm and lambda_I = 9.5855 cm. |
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100 | density = 19.30*g/cm3; |
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101 | a = 183.85*g/mole; |
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102 | Tungsten = new G4Material(name="Tungsten", z=74., a, density); |
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103 | |
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104 | // Lead has a X0 = 0.56120 cm and lambda_I = 17.092 cm. |
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105 | density = 11.35*g/cm3; |
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106 | a = 207.19*g/mole; |
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107 | Lead = new G4Material(name="Lead", z=82., a, density); |
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108 | |
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109 | // Uranium has a X0 = 0.31662 cm and lambda_I = 10.501 cm. |
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110 | density = 18.95*g/cm3; |
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111 | a = 238.03*g/mole; |
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112 | Uranium = new G4Material(name="Uranium", z=92., a, density); |
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113 | |
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114 | // Liquid Argon has a X0 = 10.971 cm and lambda_I = 65.769 cm. |
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115 | density = 1.4*g/cm3; |
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116 | a = 39.95*g/mole; |
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117 | LiquidArgon = new G4Material(name="LiquidArgon", z=18., a, density); |
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118 | |
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119 | //--- mixtures |
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120 | |
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121 | density = 1.290*mg/cm3; |
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122 | G4Material* Air = new G4Material(name="Air", density, nel=2); |
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123 | Air->AddElement(elN, 0.7); |
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124 | Air->AddElement(elO, 0.3); |
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125 | |
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126 | // 4-May-2006 : We rename "Vacuum" as "G4vacuum" to avoid |
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127 | // problems with Flugg. |
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128 | density = 1.e-5*g/cm3; |
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129 | pressure = 2.e-2*bar; |
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130 | temperature = STP_Temperature; // From PhysicalConstants.h . |
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131 | G4Material* G4vacuum = new G4Material(name="G4vacuum", density, nel=1, |
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132 | kStateGas, temperature, pressure); |
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133 | G4vacuum->AddMaterial(Air, fractionmass=1.); |
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134 | |
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135 | // Plastic scintillator tiles (used both in CMS hadron calorimeter |
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136 | // and ATLAS hadron barrel calorimeter): |
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137 | // X0 = 42.4 cm and lambda_I = 79.360 cm. |
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138 | density = 1.032*g/cm3; |
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139 | Polystyrene = new G4Material(name="Polystyrene", density, nel=2); |
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140 | Polystyrene->AddElement(elC, natoms=19); |
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141 | Polystyrene->AddElement(elH, natoms=21); |
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142 | |
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143 | // PbWO4 CMS crystals. It has a X0 = 0.89 cm and lambda_I = 22.4 cm. |
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144 | density = 8.28*g/cm3; |
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145 | PbWO4 = new G4Material(name="PbWO4", density, nel=3); |
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146 | PbWO4->AddElement(elPb, natoms=1); |
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147 | PbWO4->AddElement(elW, natoms=1); |
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148 | PbWO4->AddElement(elO, natoms=4); |
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149 | |
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150 | //------------------- volumes -------------------------- |
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151 | |
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152 | // --- experimental hall (world volume) |
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153 | // beam line along z axis |
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154 | |
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155 | //***LOOKHERE*** |
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156 | const G4double sizeExpHall = 4.0*m; // For normal calorimeter |
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157 | //const G4double sizeExpHall = 10.0*m; // For Scintillator calorimeter |
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158 | |
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159 | G4double expHall_x = sizeExpHall / 2.0; // half dimension along x |
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160 | G4double expHall_y = sizeExpHall / 2.0; // half dimension along y |
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161 | G4double expHall_z = sizeExpHall / 2.0; // half dimension along z |
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162 | |
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163 | G4Box* experimentalHall_box |
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164 | = new G4Box("expHall_box",expHall_x,expHall_y,expHall_z); |
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165 | |
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166 | experimentalHall_log = new G4LogicalVolume(experimentalHall_box, // solid |
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167 | G4vacuum, // material |
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168 | "expHall_log", // name |
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169 | 0, // field manager |
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170 | 0, // sensitive detector |
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171 | 0); // user limits |
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172 | |
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173 | experimentalHall_phys = new G4PVPlacement(0, // rotation |
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174 | G4ThreeVector(), // translation |
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175 | "expHall", // name |
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176 | experimentalHall_log, // logical volume |
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177 | 0, // mother physical volume |
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178 | false, // boolean operation |
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179 | 0); // copy number |
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180 | |
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181 | // --- Detector |
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182 | |
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183 | //***LOOKHERE*** |
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184 | const G4double sizeCalo = 2.0*m; // For normal calorimeter |
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185 | //const G4double sizeCalo = 8.0*m; // For Scintillator calorimeter |
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186 | |
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187 | G4double xAbsorber = sizeCalo / 2.0; // half dimension along x |
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188 | G4double yAbsorber = sizeCalo / 2.0; // half dimension along y |
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189 | G4double zAbsorber = sizeCalo / 2.0; // half dimension along z |
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190 | |
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191 | G4Box* solidAbsorber = new G4Box("solidAbsorber", xAbsorber, yAbsorber, zAbsorber); |
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192 | |
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193 | logicAbsorber = new G4LogicalVolume(solidAbsorber, // solid |
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194 | theAbsorberMaterial, // material |
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195 | "logicAbsorber", // name |
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196 | 0, // field manager |
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197 | 0, // sensitive detector |
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198 | 0); // user limits |
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199 | |
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200 | physiAbsorber = new G4PVPlacement(0, // rotation |
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201 | G4ThreeVector(), // translation |
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202 | "physiAbsorber", // its name |
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203 | logicAbsorber, // logical volume |
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204 | experimentalHall_phys, // mother physical volume |
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205 | false, // boolean operation |
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206 | 100); // copy number |
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207 | |
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208 | // --- Set default values ***LOOKHERE*** |
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209 | theAbsorberMaterial = Iron; |
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210 | //theAbsorberMaterial = Copper; |
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211 | //theAbsorberMaterial = Tungsten; |
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212 | //theAbsorberMaterial = Lead; |
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213 | //theAbsorberMaterial = Uranium; |
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214 | //theAbsorberMaterial = PbWO4; |
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215 | //theAbsorberMaterial = Polystyrene; |
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216 | //theAbsorberMaterial = LiquidArgon; |
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217 | |
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218 | logicAbsorber->SetMaterial( theAbsorberMaterial ); |
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219 | |
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220 | PrintParameters(); |
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221 | |
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222 | return experimentalHall_phys; |
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223 | } |
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224 | |
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225 | |
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226 | void DetectorConstruction::PrintParameters() |
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227 | { |
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228 | G4cout << G4endl << G4endl |
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229 | << " ------ DetectorConstruction::PrintParameters() ------ " << G4endl |
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230 | << " Absorber Material = "; |
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231 | if ( theAbsorberMaterial ) { |
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232 | G4cout << theAbsorberMaterial->GetName(); |
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233 | } else { |
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234 | G4cout << " UNDEFINED "; |
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235 | } |
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236 | G4cout << G4endl << " -------------------------------------------------------- " |
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237 | << G4endl << G4endl; |
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238 | } |
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