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 | // |
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27 | // $Id: Em8DetectorConstruction.cc,v 1.21 2007/10/02 10:12:47 vnivanch 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 | #include "Em8DetectorConstruction.hh" |
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33 | #include "Em8DetectorMessenger.hh" |
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34 | #include "Em8CalorimeterSD.hh" |
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35 | |
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36 | |
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37 | #include "G4Material.hh" |
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38 | #include "G4Tubs.hh" |
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39 | #include "G4LogicalVolume.hh" |
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40 | #include "G4PVPlacement.hh" |
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41 | |
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42 | #include "G4FieldManager.hh" |
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43 | #include "G4TransportationManager.hh" |
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44 | #include "G4SDManager.hh" |
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45 | #include "G4GeometryManager.hh" |
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46 | #include "G4RunManager.hh" |
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47 | |
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48 | #include "G4Region.hh" |
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49 | #include "G4RegionStore.hh" |
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50 | #include "G4PhysicalVolumeStore.hh" |
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51 | #include "G4LogicalVolumeStore.hh" |
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52 | #include "G4SolidStore.hh" |
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53 | #include "G4ProductionCuts.hh" |
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54 | |
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55 | #include "G4VisAttributes.hh" |
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56 | #include "G4Colour.hh" |
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57 | |
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58 | #include "G4UnitsTable.hh" |
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59 | #include "G4ios.hh" |
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60 | |
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61 | ///////////////////////////////////////////////////////////////////////////// |
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62 | // |
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63 | // |
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64 | |
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65 | Em8DetectorConstruction::Em8DetectorConstruction() |
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66 | : |
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67 | fWorldChanged(false), |
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68 | fWorldMaterial(NULL),fSolidWorld(NULL),fLogicWorld(NULL),fPhysicsWorld(NULL), |
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69 | fAbsorberMaterial(NULL),fSolidAbsorber(NULL),fLogicAbsorber(NULL), |
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70 | fPhysicsAbsorber(NULL),fDetectorMessenger(NULL), |
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71 | fCalorimeterSD(NULL),fRegGasDet(NULL) |
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72 | { |
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73 | fDelta = 0.0001*mm; |
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74 | |
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75 | fAbsorberThickness = 23.0*mm; |
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76 | |
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77 | fAbsorberRadius = 10.*cm; |
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78 | fAbsorberZ = 0.*cm ; |
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79 | |
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80 | fWindowThick = 51.0*micrometer ; |
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81 | |
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82 | fGammaCut = 23*mm; |
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83 | fElectronCut = 23*mm; |
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84 | fPositronCut = 23*mm; |
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85 | |
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86 | fDetectorMessenger = new Em8DetectorMessenger(this); |
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87 | } |
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88 | |
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89 | ////////////////////////////////////////////////////////////////////////// |
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90 | // |
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91 | // |
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92 | |
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93 | Em8DetectorConstruction::~Em8DetectorConstruction() |
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94 | { |
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95 | delete fDetectorMessenger; |
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96 | } |
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97 | |
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98 | ////////////////////////////////////////////////////////////////////////// |
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99 | // |
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100 | // |
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101 | |
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102 | G4VPhysicalVolume* Em8DetectorConstruction::Construct() |
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103 | { |
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104 | DefineMaterials(); |
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105 | return ConstructCalorimeter(); |
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106 | } |
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107 | |
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108 | ////////////////////////////////////////////////////////////////////////////// |
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109 | // |
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110 | // |
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111 | |
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112 | void Em8DetectorConstruction::DefineMaterials() |
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113 | { |
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114 | //This function illustrates the possible ways to define materials |
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115 | |
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116 | G4String name, symbol ; //a=mass of a mole; |
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117 | G4double a, z, density ; //z=mean number of protons; |
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118 | |
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119 | G4int nel ; //iz=number of protons in an isotope; |
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120 | // n=number of nucleons in an isotope; |
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121 | |
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122 | G4int ncomponents; |
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123 | G4double fractionmass; |
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124 | |
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125 | // |
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126 | // define Elements |
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127 | // |
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128 | |
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129 | a = 1.01*g/mole; |
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130 | G4Element* elH = new G4Element(name="Hydrogen",symbol="H" , z= 1., a); |
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131 | |
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132 | a = 12.01*g/mole; |
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133 | G4Element* elC = new G4Element(name="Carbon", symbol="C", z=6., a); |
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134 | |
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135 | a = 14.01*g/mole; |
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136 | G4Element* elN = new G4Element(name="Nitrogen",symbol="N" , z= 7., a); |
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137 | |
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138 | a = 16.00*g/mole; |
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139 | G4Element* elO = new G4Element(name="Oxygen" ,symbol="O" , z= 8., a); |
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140 | |
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141 | a = 39.948*g/mole; |
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142 | G4Element* elAr = new G4Element(name="Argon", symbol="Ar", z=18., a); |
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143 | |
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144 | // |
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145 | // define simple materials |
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146 | // |
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147 | |
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148 | // Aluminium |
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149 | a = 26.98*g/mole; |
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150 | density = 2.7*g/cm3; |
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151 | G4Material* Al = new G4Material(name="Aluminium", z=13., a, density); |
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152 | if(Al); |
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153 | |
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154 | // Mylar |
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155 | density = 1.39*g/cm3; |
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156 | G4Material* Mylar = new G4Material(name="Mylar", density, nel=3); |
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157 | Mylar->AddElement(elO,2); |
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158 | Mylar->AddElement(elC,5); |
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159 | Mylar->AddElement(elH,4); |
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160 | |
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161 | // Silicon as detector material |
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162 | density = 2.330*g/cm3; |
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163 | a = 28.09*g/mole; |
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164 | G4Material* Si = new G4Material(name="Silicon", z=14., a, density); |
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165 | if(Si); |
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166 | |
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167 | // Krypton as detector gas, STP |
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168 | density = 3.700*mg/cm3 ; |
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169 | a = 83.80*g/mole ; |
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170 | G4Material* Kr = new G4Material(name="Kr",z=36., a, density ); |
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171 | |
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172 | |
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173 | // Dry air (average composition) |
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174 | density = 1.7836*mg/cm3 ; // STP |
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175 | G4Material* Argon = new G4Material(name="Argon" , density, ncomponents=1); |
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176 | Argon->AddElement(elAr, 1); |
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177 | |
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178 | density = 1.25053*mg/cm3 ; // STP |
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179 | G4Material* Nitrogen = new G4Material(name="N2" , density, ncomponents=1); |
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180 | Nitrogen->AddElement(elN, 2); |
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181 | |
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182 | density = 1.4289*mg/cm3 ; // STP |
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183 | G4Material* Oxygen = new G4Material(name="O2" , density, ncomponents=1); |
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184 | Oxygen->AddElement(elO, 2); |
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185 | |
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186 | density = 1.2928*mg/cm3 ; // STP |
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187 | G4Material* Air = new G4Material(name="Air" , density, ncomponents=3); |
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188 | Air->AddMaterial( Nitrogen, fractionmass = 0.7557 ) ; |
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189 | Air->AddMaterial( Oxygen, fractionmass = 0.2315 ) ; |
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190 | Air->AddMaterial( Argon, fractionmass = 0.0128 ) ; |
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191 | |
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192 | /* ************** |
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193 | |
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194 | // 93% Kr + 7% CH4, STP |
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195 | density = 3.491*mg/cm3 ; |
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196 | G4Material* Kr7CH4 = new G4Material(name="Kr7CH4" , density, |
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197 | ncomponents=2); |
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198 | Kr7CH4->AddMaterial( Kr, fractionmass = 0.986 ) ; |
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199 | Kr7CH4->AddMaterial( metane, fractionmass = 0.014 ) ; |
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200 | |
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201 | G4double TRT_Xe_density = 5.485*mg/cm3; |
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202 | G4Material* TRT_Xe = new G4Material(name="TRT_Xe", TRT_Xe_density, nel=1, |
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203 | kStateGas,293.15*kelvin,1.*atmosphere); |
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204 | TRT_Xe->AddElement(elXe,1); |
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205 | |
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206 | G4double TRT_CO2_density = 1.842*mg/cm3; |
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207 | G4Material* TRT_CO2 = new G4Material(name="TRT_CO2", TRT_CO2_density, nel=2, |
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208 | kStateGas,293.15*kelvin,1.*atmosphere); |
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209 | TRT_CO2->AddElement(elC,1); |
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210 | TRT_CO2->AddElement(elO,2); |
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211 | |
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212 | G4double TRT_CF4_density = 3.9*mg/cm3; |
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213 | G4Material* TRT_CF4 = new G4Material(name="TRT_CF4", TRT_CF4_density, nel=2, |
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214 | kStateGas,293.15*kelvin,1.*atmosphere); |
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215 | TRT_CF4->AddElement(elC,1); |
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216 | TRT_CF4->AddElement(elF,4); |
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217 | |
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218 | // ATLAS TRT straw tube gas mixture (20 C, 1 atm) |
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219 | |
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220 | G4double XeCO2CF4_density = 4.76*mg/cm3; |
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221 | G4Material* XeCO2CF4 = new G4Material(name="XeCO2CF4", XeCO2CF4_density, |
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222 | ncomponents=3, |
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223 | kStateGas,293.15*kelvin,1.*atmosphere); |
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224 | XeCO2CF4->AddMaterial(TRT_Xe,0.807); |
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225 | XeCO2CF4->AddMaterial(TRT_CO2,0.039); |
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226 | XeCO2CF4->AddMaterial(TRT_CF4,0.154); |
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227 | |
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228 | *********** */ |
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229 | |
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230 | // Xenon as detector gas, STP |
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231 | density = 5.858*mg/cm3 ; |
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232 | a = 131.29*g/mole ; |
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233 | G4Material* Xe = new G4Material(name="Xenon",z=54., a, density ); |
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234 | |
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235 | // Metane, STP |
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236 | density = 0.7174*mg/cm3 ; |
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237 | G4Material* metane = new G4Material(name="CH4",density,nel=2) ; |
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238 | metane->AddElement(elC,1) ; |
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239 | metane->AddElement(elH,4) ; |
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240 | |
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241 | // C3H8,20 C, 2 atm |
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242 | density = 3.758*mg/cm3 ; |
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243 | G4Material* C3H8 = new G4Material(name="C3H8",density,nel=2) ; |
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244 | C3H8->AddElement(elC,3) ; |
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245 | C3H8->AddElement(elH,8) ; |
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246 | |
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247 | // Propane, STP |
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248 | density = 2.005*mg/cm3 ; |
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249 | G4Material* propane = new G4Material(name="propane",density,nel=2) ; |
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250 | propane->AddElement(elC,3) ; |
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251 | propane->AddElement(elH,8) ; |
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252 | |
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253 | // 87.5% Xe + 7.5% CH4 + 5% C3H8, 20 C, 1 atm |
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254 | density = 4.9196*mg/cm3 ; |
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255 | G4Material* XeCH4C3H8 = new G4Material(name="XeCH4C3H8" , |
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256 | density, ncomponents=3); |
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257 | XeCH4C3H8->AddMaterial( Xe, fractionmass = 0.971 ) ; |
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258 | XeCH4C3H8->AddMaterial( metane, fractionmass = 0.010 ) ; |
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259 | XeCH4C3H8->AddMaterial( propane, fractionmass = 0.019 ) ; |
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260 | |
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261 | // 93% Ar + 7% CH4, STP |
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262 | density = 1.709*mg/cm3 ; |
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263 | G4Material* Ar7CH4 = new G4Material(name="Ar7CH4", density, ncomponents=2); |
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264 | Ar7CH4->AddMaterial( Argon, fractionmass = 0.971 ) ; |
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265 | Ar7CH4->AddMaterial( metane, fractionmass = 0.029 ) ; |
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266 | |
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267 | // Carbon dioxide, STP |
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268 | density = 1.977*mg/cm3; |
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269 | G4Material* CarbonDioxide = new G4Material(name="CO2", density, nel=2); |
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270 | CarbonDioxide->AddElement(elC,1); |
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271 | CarbonDioxide->AddElement(elO,2); |
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272 | |
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273 | // 80% Ar + 20% CO2, STP |
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274 | density = 1.8223*mg/cm3 ; |
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275 | G4Material* Ar_80CO2_20 = new G4Material(name="ArCO2" , density, |
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276 | ncomponents=2); |
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277 | Ar_80CO2_20->AddMaterial( Argon, fractionmass = 0.783 ) ; |
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278 | Ar_80CO2_20->AddMaterial( CarbonDioxide, fractionmass = 0.217 ) ; |
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279 | |
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280 | // 80% Xe + 20% CO2, STP |
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281 | density = 5.0818*mg/cm3 ; |
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282 | G4Material* Xe20CO2 = new G4Material(name="Xe20CO2", density, |
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283 | ncomponents=2); |
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284 | Xe20CO2->AddMaterial( Xe, fractionmass = 0.922 ) ; |
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285 | Xe20CO2->AddMaterial( CarbonDioxide, fractionmass = 0.078 ) ; |
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286 | |
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287 | // 80% Kr + 20% CO2, STP |
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288 | density = 3.601*mg/cm3 ; |
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289 | G4Material* Kr20CO2 = new G4Material(name="Kr20CO2" , density, |
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290 | ncomponents=2); |
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291 | Kr20CO2->AddMaterial( Kr, fractionmass = 0.89 ) ; |
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292 | Kr20CO2->AddMaterial( CarbonDioxide, fractionmass = 0.11 ) ; |
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293 | |
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294 | // G4cout << *(G4Material::GetMaterialTable()) << G4endl; |
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295 | |
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296 | // fWindowMat = Mylar ; |
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297 | |
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298 | fAbsorberMaterial = XeCH4C3H8; |
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299 | // Al; // Si; // Xe; // Ar7CH4; // C3H8; // XeCH4C3H8; |
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300 | |
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301 | fWorldMaterial = Mylar; // Air ; |
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302 | } |
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303 | |
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304 | ///////////////////////////////////////////////////////////////////////// |
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305 | // |
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306 | // |
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307 | |
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308 | G4VPhysicalVolume* Em8DetectorConstruction::ConstructCalorimeter() |
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309 | { |
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310 | // Cleanup old geometry |
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311 | |
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312 | G4GeometryManager::GetInstance()->OpenGeometry(); |
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313 | G4PhysicalVolumeStore::GetInstance()->Clean(); |
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314 | G4LogicalVolumeStore::GetInstance()->Clean(); |
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315 | G4SolidStore::GetInstance()->Clean(); |
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316 | |
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317 | // G4RegionStore::GetInstance()->Clean(); |
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318 | |
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319 | // complete the Calor parameters definition and print |
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320 | |
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321 | ComputeCalorParameters(); |
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322 | PrintCalorParameters(); |
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323 | |
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324 | // World |
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325 | fSolidWorld = new G4Tubs("World", //its name |
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326 | 0.,fWorldSizeR,fWorldSizeZ/2.,0.,twopi) ;//its size |
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327 | |
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328 | fLogicWorld = new G4LogicalVolume(fSolidWorld, //its solid |
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329 | fWorldMaterial, //its material |
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330 | "World"); //its name |
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331 | |
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332 | fPhysicsWorld = new G4PVPlacement(0, //no rotation |
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333 | G4ThreeVector(), //at (0,0,0) |
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334 | "World", //its name |
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335 | fLogicWorld, //its logical volume |
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336 | NULL, //its mother volume |
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337 | false, //no boolean operation |
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338 | 0); //copy number |
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339 | |
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340 | // Absorber |
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341 | |
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342 | if (fAbsorberThickness > 0.) |
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343 | { |
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344 | |
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345 | fSolidAbsorber = new G4Tubs("Absorber", |
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346 | 0.,fAbsorberRadius,fAbsorberThickness/2.,0.,twopi); |
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347 | |
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348 | fLogicAbsorber = new G4LogicalVolume(fSolidAbsorber, |
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349 | fAbsorberMaterial, |
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350 | "Absorber"); |
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351 | |
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352 | fPhysicsAbsorber = new G4PVPlacement(0, |
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353 | G4ThreeVector(0.,0.,fAbsorberZ), |
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354 | "Absorber", |
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355 | fLogicAbsorber, |
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356 | fPhysicsWorld, |
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357 | false, |
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358 | 0); |
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359 | |
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360 | } |
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361 | if( fRegGasDet != 0 ) // remove obsolete root logical volume |
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362 | { |
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363 | fRegGasDet->RemoveRootLogicalVolume(fLogicAbsorber); |
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364 | } |
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365 | G4ProductionCuts* cuts = 0; |
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366 | |
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367 | if( fRegGasDet == 0 ) // First time - instantiate a region and a cut objects |
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368 | { |
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369 | fRegGasDet = new G4Region("VertexDetector"); |
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370 | cuts = new G4ProductionCuts(); |
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371 | fRegGasDet->SetProductionCuts(cuts); |
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372 | } |
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373 | else // Second time - get a cut object from region |
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374 | { |
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375 | cuts = fRegGasDet->GetProductionCuts(); |
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376 | } |
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377 | fRegGasDet->AddRootLogicalVolume(fLogicAbsorber); |
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378 | |
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379 | cuts->SetProductionCut(fGammaCut,"gamma"); |
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380 | cuts->SetProductionCut(fElectronCut,"e-"); |
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381 | cuts->SetProductionCut(fPositronCut,"e+"); |
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382 | |
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383 | // Sensitive Detectors: Absorber |
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384 | |
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385 | G4SDManager* SDman = G4SDManager::GetSDMpointer(); |
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386 | |
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387 | if(!fCalorimeterSD) |
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388 | { |
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389 | fCalorimeterSD = new Em8CalorimeterSD("CalorSD",this); |
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390 | SDman->AddNewDetector( fCalorimeterSD ); |
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391 | } |
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392 | if (fLogicAbsorber) fLogicAbsorber->SetSensitiveDetector(fCalorimeterSD); |
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393 | |
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394 | // Parameterisation |
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395 | |
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396 | // G4VXrayTRmodel* pTRModel = new G4IrregularXrayTRmodel(logicRadiator, |
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397 | // fRadThickness,fGasGap); |
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398 | |
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399 | // G4VXrayTRmodel* pTRModel = new G4FoamXrayTRmodel(logicRadiator, |
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400 | // fRadThickness,fGasGap); |
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401 | |
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402 | // G4VXrayTRmodel* pTRModel = new G4RegularXrayTRmodel(logicRadiator, |
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403 | // fRadThickness,fGasGap); |
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404 | |
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405 | // G4double alphaPlate = 160.0 ; |
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406 | // G4double alphaGas = 160.0 ; |
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407 | |
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408 | // G4VXrayTRmodel* pTRModel = new G4GamDistrXrayTRmodel(logicRadiator, |
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409 | // fRadThickness,alphaPlate, |
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410 | // fGasGap,alphaGas); |
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411 | |
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412 | // G4VXrayTRmodel* pTRModel = new G4PlateIrrGasXrayTRmodel(logicRadiator, |
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413 | // fRadThickness,fGasGap); |
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414 | |
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415 | // pTRModel->GetPlateZmuProduct() ; |
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416 | // pTRModel->GetGasZmuProduct() ; |
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417 | |
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418 | // pTRModel->GetNumberOfPhotons() ; |
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419 | |
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420 | // always return physics world |
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421 | |
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422 | return fPhysicsWorld; |
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423 | } |
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424 | |
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425 | //////////////////////////////////////////////////////////////////////////// |
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426 | // |
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427 | // |
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428 | |
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429 | void Em8DetectorConstruction::PrintCalorParameters() |
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430 | { |
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431 | G4cout << "\n The WORLD is made of " |
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432 | << fWorldSizeZ/mm << "mm of " << fWorldMaterial->GetName() ; |
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433 | G4cout << ", the transverse size (R) of the world is " << fWorldSizeR/mm |
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434 | << " mm. " << G4endl; |
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435 | G4cout << " The ABSORBER is made of " |
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436 | << fAbsorberThickness/mm << "mm of " << fAbsorberMaterial->GetName() ; |
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437 | G4cout << ", the transverse size (R) is " << fAbsorberRadius/mm << " mm. " << G4endl; |
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438 | G4cout << " Z position of the (middle of the) absorber " |
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439 | << fAbsorberZ/mm << " mm." << G4endl; |
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440 | G4cout << G4endl; |
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441 | } |
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442 | |
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443 | /////////////////////////////////////////////////////////////////////////// |
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444 | // |
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445 | // |
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446 | |
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447 | void Em8DetectorConstruction::SetAbsorberMaterial(G4String materialChoice) |
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448 | { |
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449 | // get the pointer to the material table |
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450 | const G4MaterialTable* theMaterialTable = G4Material::GetMaterialTable(); |
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451 | |
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452 | // search the material by its name |
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453 | G4Material* pttoMaterial; |
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454 | |
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455 | for (size_t J = 0 ; J < theMaterialTable->size() ; J++) |
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456 | { |
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457 | pttoMaterial = (*theMaterialTable)[J]; |
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458 | |
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459 | if(pttoMaterial->GetName() == materialChoice) |
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460 | { |
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461 | fAbsorberMaterial = pttoMaterial; |
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462 | fLogicAbsorber->SetMaterial(pttoMaterial); |
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463 | |
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464 | // PrintCalorParameters(); |
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465 | } |
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466 | } |
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467 | } |
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468 | |
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469 | //////////////////////////////////////////////////////////////////////////// |
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470 | // |
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471 | // |
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472 | |
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473 | void Em8DetectorConstruction::SetWorldMaterial(G4String materialChoice) |
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474 | { |
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475 | // get the pointer to the material table |
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476 | const G4MaterialTable* theMaterialTable = G4Material::GetMaterialTable(); |
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477 | |
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478 | // search the material by its name |
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479 | G4Material* pttoMaterial; |
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480 | for (size_t J=0 ; J<theMaterialTable->size() ; J++) |
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481 | { |
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482 | pttoMaterial = (*theMaterialTable)[J]; |
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483 | |
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484 | if(pttoMaterial->GetName() == materialChoice) |
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485 | { |
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486 | fWorldMaterial = pttoMaterial; |
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487 | fLogicWorld->SetMaterial(pttoMaterial); |
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488 | |
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489 | // PrintCalorParameters(); |
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490 | } |
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491 | } |
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492 | } |
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493 | |
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494 | /////////////////////////////////////////////////////////////////////////// |
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495 | // |
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496 | // |
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497 | |
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498 | void Em8DetectorConstruction::SetAbsorberThickness(G4double val) |
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499 | { |
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500 | // change Absorber thickness and recompute the calorimeter parameters |
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501 | fAbsorberThickness = val; |
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502 | ComputeCalorParameters(); |
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503 | } |
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504 | |
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505 | ///////////////////////////////////////////////////////////////////////////// |
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506 | // |
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507 | // |
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508 | |
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509 | void Em8DetectorConstruction::SetAbsorberRadius(G4double val) |
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510 | { |
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511 | // change the transverse size and recompute the calorimeter parameters |
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512 | fAbsorberRadius = val; |
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513 | ComputeCalorParameters(); |
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514 | } |
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515 | |
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516 | //////////////////////////////////////////////////////////////////////////// |
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517 | // |
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518 | // |
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519 | |
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520 | void Em8DetectorConstruction::SetWorldSizeZ(G4double val) |
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521 | { |
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522 | fWorldChanged=true; |
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523 | fWorldSizeZ = val; |
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524 | ComputeCalorParameters(); |
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525 | } |
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526 | |
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527 | /////////////////////////////////////////////////////////////////////////// |
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528 | // |
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529 | // |
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530 | |
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531 | void Em8DetectorConstruction::SetWorldSizeR(G4double val) |
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532 | { |
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533 | fWorldChanged=true; |
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534 | fWorldSizeR = val; |
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535 | ComputeCalorParameters(); |
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536 | } |
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537 | |
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538 | ////////////////////////////////////////////////////////////////////////////// |
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539 | // |
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540 | // |
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541 | |
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542 | void Em8DetectorConstruction::SetAbsorberZpos(G4double val) |
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543 | { |
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544 | fAbsorberZ = val; |
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545 | ComputeCalorParameters(); |
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546 | } |
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547 | |
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548 | |
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549 | /////////////////////////////////////////////////////////////////////////////// |
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550 | // |
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551 | // |
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552 | |
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553 | void Em8DetectorConstruction::UpdateGeometry() |
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554 | { |
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555 | G4RunManager::GetRunManager()->DefineWorldVolume(ConstructCalorimeter()); |
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556 | } |
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557 | |
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558 | // |
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559 | // |
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560 | //////////////////////////////////////////////////////////////////////////// |
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561 | |
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