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 | // Code developed by: |
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27 | // S.Larsson |
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28 | // |
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29 | // ***************************************** |
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30 | // * * |
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31 | // * PurgMagDetectorConstruction.cc * |
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32 | // * * |
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33 | // ***************************************** |
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34 | // |
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35 | // $Id: PurgMagDetectorConstruction.cc,v 1.4 2006/06/29 16:06:11 gunter Exp $ |
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36 | // GEANT4 tag $Name: geant4-09-03-cand-01 $ |
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37 | // |
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38 | #include "PurgMagDetectorConstruction.hh" |
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39 | #include "PurgMagTabulatedField3D.hh" |
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40 | #include "G4ThreeVector.hh" |
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41 | #include "globals.hh" |
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42 | #include "G4Material.hh" |
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43 | #include "G4Box.hh" |
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44 | #include "G4Trd.hh" |
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45 | #include "G4Tubs.hh" |
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46 | #include "G4LogicalVolume.hh" |
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47 | #include "G4PVPlacement.hh" |
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48 | #include "G4PVReplica.hh" |
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49 | #include "G4PVParameterised.hh" |
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50 | #include "G4Mag_UsualEqRhs.hh" |
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51 | #include "G4FieldManager.hh" |
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52 | #include "G4TransportationManager.hh" |
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53 | #include "G4EqMagElectricField.hh" |
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54 | |
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55 | #include "G4ChordFinder.hh" |
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56 | #include "G4UniformMagField.hh" |
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57 | #include "G4ExplicitEuler.hh" |
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58 | #include "G4ImplicitEuler.hh" |
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59 | #include "G4SimpleRunge.hh" |
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60 | #include "G4SimpleHeum.hh" |
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61 | #include "G4ClassicalRK4.hh" |
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62 | #include "G4HelixExplicitEuler.hh" |
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63 | #include "G4HelixImplicitEuler.hh" |
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64 | #include "G4HelixSimpleRunge.hh" |
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65 | #include "G4CashKarpRKF45.hh" |
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66 | #include "G4RKG3_Stepper.hh" |
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67 | |
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68 | #include "G4VisAttributes.hh" |
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69 | #include "G4Colour.hh" |
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70 | #include "G4UnitsTable.hh" |
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71 | #include "G4ios.hh" |
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72 | |
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73 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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74 | // Possibility to turn off (0) magnetic field and measurement volume. |
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75 | #define GAP 1 // Magnet geometric volume |
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76 | #define MAG 1 // Magnetic field grid |
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77 | #define MEASUREVOL 1 // Volume for measurement |
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78 | |
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79 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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80 | |
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81 | PurgMagDetectorConstruction::PurgMagDetectorConstruction() |
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82 | |
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83 | :physiWorld(NULL), logicWorld(NULL), solidWorld(NULL), |
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84 | physiGap1(NULL), logicGap1(NULL), solidGap1(NULL), |
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85 | physiGap2(NULL), logicGap2(NULL), solidGap2(NULL), |
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86 | physiMeasureVolume(NULL), logicMeasureVolume(NULL), solidMeasureVolume(NULL), |
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87 | WorldMaterial(NULL), |
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88 | GapMaterial(NULL) |
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89 | |
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90 | { |
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91 | WorldSizeXY=WorldSizeZ=0; |
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92 | GapSizeX1=GapSizeX2=GapSizeY1=GapSizeY2=GapSizeZ=0; |
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93 | MeasureVolumeSizeXY=MeasureVolumeSizeZ=0; |
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94 | } |
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95 | |
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96 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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97 | |
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98 | PurgMagDetectorConstruction::~PurgMagDetectorConstruction() |
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99 | {} |
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100 | |
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101 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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102 | |
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103 | G4VPhysicalVolume* PurgMagDetectorConstruction::Construct() |
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104 | |
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105 | { |
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106 | DefineMaterials(); |
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107 | return ConstructCalorimeter(); |
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108 | } |
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109 | |
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110 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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111 | |
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112 | void PurgMagDetectorConstruction::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 | //Density and mass per mole taken from Physics Handbook for Science |
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116 | //and engineering, sixth edition. This is a general material list |
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117 | //with extra materials for other examples. |
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118 | |
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119 | G4String name, symbol; |
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120 | G4double density; |
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121 | |
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122 | G4int ncomponents, natoms; |
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123 | G4double fractionmass; |
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124 | G4double temperature, pressure; |
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125 | |
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126 | // Define Elements |
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127 | // Example: G4Element* Notation = new G4Element ("Element", "Notation", z, a); |
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128 | G4Element* H = new G4Element ("Hydrogen", "H", 1. , 1.01*g/mole); |
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129 | G4Element* N = new G4Element ("Nitrogen", "N", 7., 14.01*g/mole); |
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130 | G4Element* O = new G4Element ("Oxygen" , "O", 8. , 16.00*g/mole); |
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131 | G4Element* Ar = new G4Element ("Argon" , "Ar", 18., 39.948*g/mole ); |
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132 | |
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133 | |
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134 | // Define Material |
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135 | // Example: G4Material* Notation = new G4Material("Material", z, a, density); |
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136 | /* Not used in this setup, will be used in further development. |
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137 | G4Material* He = new G4Material("Helium", 2., 4.00*g/mole, 0.178*mg/cm3); |
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138 | G4Material* Be = new G4Material("Beryllium", 4., 9.01*g/mole, 1.848*g/cm3); |
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139 | G4Material* W = new G4Material("Tungsten", 74., 183.85*g/mole, 19.30*g/cm3); |
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140 | G4Material* Cu = new G4Material("Copper", 29., 63.55*g/mole, 8.96*g/cm3); |
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141 | */ |
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142 | G4Material* Fe = new G4Material("Iron", 26., 55.84*g/mole, 7.87*g/cm3); |
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143 | |
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144 | // Define materials from elements. |
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145 | |
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146 | // Case 1: chemical molecule |
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147 | // Water |
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148 | density = 1.000*g/cm3; |
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149 | G4Material* H2O = new G4Material(name="H2O" , density, ncomponents=2); |
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150 | H2O->AddElement(H, natoms=2); |
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151 | H2O->AddElement(O, natoms=1); |
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152 | |
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153 | // Case 2: mixture by fractional mass. |
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154 | // Air |
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155 | density = 1.290*mg/cm3; |
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156 | G4Material* Air = new G4Material(name="Air" , density, ncomponents=2); |
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157 | Air->AddElement(N, fractionmass=0.7); |
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158 | Air->AddElement(O, fractionmass=0.3); |
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159 | |
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160 | // Vacuum |
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161 | density = 1.e-5*g/cm3; |
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162 | pressure = 2.e-2*bar; |
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163 | temperature = STP_Temperature; //from PhysicalConstants.h |
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164 | G4Material* vacuum = new G4Material(name="vacuum", density, ncomponents=1, |
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165 | kStateGas,temperature,pressure); |
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166 | vacuum->AddMaterial(Air, fractionmass=1.); |
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167 | |
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168 | |
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169 | // Laboratory vacuum: Dry air (average composition) |
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170 | density = 1.7836*mg/cm3 ; // STP |
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171 | G4Material* Argon = new G4Material(name="Argon", density, ncomponents=1); |
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172 | Argon->AddElement(Ar, 1); |
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173 | |
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174 | density = 1.25053*mg/cm3 ; // STP |
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175 | G4Material* Nitrogen = new G4Material(name="N2", density, ncomponents=1); |
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176 | Nitrogen->AddElement(N, 2); |
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177 | |
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178 | density = 1.4289*mg/cm3 ; // STP |
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179 | G4Material* Oxygen = new G4Material(name="O2", density, ncomponents=1); |
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180 | Oxygen->AddElement(O, 2); |
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181 | |
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182 | |
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183 | density = 1.2928*mg/cm3 ; // STP |
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184 | density *= 1.0e-8 ; // pumped vacuum |
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185 | |
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186 | temperature = STP_Temperature; |
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187 | pressure = 1.0e-8*STP_Pressure; |
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188 | |
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189 | G4Material* LaboratoryVacuum = new G4Material(name="LaboratoryVacuum", |
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190 | density,ncomponents=3, |
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191 | kStateGas,temperature,pressure); |
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192 | LaboratoryVacuum->AddMaterial( Nitrogen, fractionmass = 0.7557 ) ; |
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193 | LaboratoryVacuum->AddMaterial( Oxygen, fractionmass = 0.2315 ) ; |
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194 | LaboratoryVacuum->AddMaterial( Argon, fractionmass = 0.0128 ) ; |
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195 | |
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196 | |
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197 | G4cout << G4endl << *(G4Material::GetMaterialTable()) << G4endl; |
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198 | |
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199 | |
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200 | // Default materials in setup. |
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201 | WorldMaterial = LaboratoryVacuum; |
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202 | GapMaterial = Fe; |
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203 | |
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204 | |
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205 | G4cout << "end material"<< endl; |
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206 | } |
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207 | |
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208 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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209 | G4VPhysicalVolume* PurgMagDetectorConstruction::ConstructCalorimeter() |
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210 | { |
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211 | // Complete the parameters definition |
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212 | |
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213 | //The World |
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214 | WorldSizeXY = 300.*cm; // Cube |
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215 | WorldSizeZ = 300.*cm; |
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216 | |
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217 | //Measurement volume |
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218 | MeasureVolumeSizeXY = 280.*cm; // Cubic slice |
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219 | MeasureVolumeSizeZ = 1.*cm; |
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220 | |
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221 | // Position of measurement volume. |
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222 | // SSD is Source to Surface Distance. Source in origo and measurements 50 cm |
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223 | // below in the z-direction (symbolizin a patient at SSD = 50 cm) |
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224 | |
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225 | SSD = 50.*cm; |
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226 | MeasureVolumePosition = -(SSD + MeasureVolumeSizeZ/2); |
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227 | |
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228 | |
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229 | // Geometric definition of the gap of the purging magnet. Approximation of |
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230 | // the shape of the pole gap. |
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231 | |
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232 | GapSizeY1 = 10.*cm; // length along x at the surface positioned at -dz |
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233 | GapSizeY2 = 10.*cm; // length along x at the surface positioned at +dz |
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234 | GapSizeX1 = 10.*cm; // length along y at the surface positioned at -dz |
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235 | GapSizeX2 = 18.37*cm; // length along y at the surface positioned at +dz |
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236 | GapSizeZ = 11.5*cm; // length along z axis |
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237 | |
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238 | Gap1PosY = 0.*cm; |
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239 | Gap1PosX = -9.55*cm; |
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240 | Gap1PosZ = -6.89*cm; |
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241 | |
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242 | Gap2PosY = 0.*cm; |
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243 | Gap2PosX = 9.55*cm; |
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244 | Gap2PosZ = -6.89*cm; |
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245 | |
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246 | |
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247 | // Coordinate correction for field grif. |
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248 | // Gap opening at z = -11.4 mm. |
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249 | // In field grid coordonates gap at z = -0.007m in field from z = 0.0m to |
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250 | // z = 0.087m. |
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251 | // -> zOffset = -11.4-(-7) = 4.4 mm |
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252 | |
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253 | zOffset = 4.4*mm; |
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254 | |
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255 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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256 | // |
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257 | // Magnetic Field - Purging magnet |
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258 | // |
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259 | #if MAG |
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260 | |
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261 | static G4bool fieldIsInitialized = false; |
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262 | if(!fieldIsInitialized) |
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263 | { |
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264 | G4FieldManager *pFieldMgr; |
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265 | // G4MagIntegratorStepper *pStepper; |
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266 | |
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267 | //Field grid in A9.TABLE. File must be in accessible from run urn directory. |
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268 | G4MagneticField* PurgMagField= new PurgMagTabulatedField3D("PurgMag3D.TABLE", zOffset); |
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269 | |
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270 | pFieldMgr=G4TransportationManager::GetTransportationManager()->GetFieldManager(); |
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271 | |
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272 | G4cout<< "DeltaStep "<<pFieldMgr->GetDeltaOneStep()/mm <<"mm" <<endl; |
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273 | |
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274 | G4ChordFinder *pChordFinder = new G4ChordFinder(PurgMagField); |
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275 | pFieldMgr->SetChordFinder( pChordFinder ); |
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276 | |
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277 | pFieldMgr->SetDetectorField(PurgMagField); |
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278 | |
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279 | fieldIsInitialized = true; |
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280 | } |
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281 | #endif |
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282 | |
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283 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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284 | |
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285 | // Some out prints of the setup. |
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286 | |
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287 | G4cout << "\n-----------------------------------------------------------" |
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288 | << "\n Geometry and materials" |
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289 | << "\n-----------------------------------------------------------" |
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290 | << "\n ---> World:" |
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291 | << "\n ---> " << WorldMaterial->GetName() << " in World" |
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292 | << "\n ---> " << "WorldSizeXY: " << G4BestUnit(WorldSizeXY,"Length") |
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293 | << "\n ---> " << "WorldSizeZ: " << G4BestUnit(WorldSizeZ,"Length"); |
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294 | |
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295 | #if GAP |
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296 | G4cout << "\n-----------------------------------------------------------" |
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297 | << "\n ---> Purging Magnet:" |
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298 | << "\n ---> " << "Gap made of "<< GapMaterial->GetName() |
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299 | << "\n ---> " << "GapSizeY1: " << G4BestUnit(GapSizeY1,"Length") |
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300 | << "\n ---> " << "GapSizeY2: " << G4BestUnit(GapSizeY2,"Length") |
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301 | << "\n ---> " << "GapSizeX1: " << G4BestUnit(GapSizeX1,"Length") |
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302 | << "\n ---> " << "GapSizeX2: " << G4BestUnit(GapSizeX2,"Length"); |
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303 | #endif |
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304 | |
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305 | #if MEASUREVOL |
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306 | G4cout << "\n-----------------------------------------------------------" |
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307 | << "\n ---> Measurement Volume:" |
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308 | << "\n ---> " << WorldMaterial->GetName() << " in Measurement volume" |
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309 | << "\n ---> " << "MeasureVolumeXY: " << G4BestUnit(MeasureVolumeSizeXY,"Length") |
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310 | << "\n ---> " << "MeasureVolumeZ: " << G4BestUnit(MeasureVolumeSizeZ,"Length") |
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311 | << "\n ---> " << "At SSD = " << G4BestUnit(MeasureVolumePosition,"Length"); |
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312 | #endif |
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313 | |
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314 | G4cout << "\n-----------------------------------------------------------\n"; |
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315 | |
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316 | |
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317 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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318 | // |
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319 | // World |
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320 | // |
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321 | |
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322 | |
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323 | solidWorld = new G4Box("World", //its name |
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324 | WorldSizeXY/2,WorldSizeXY/2,WorldSizeZ/2); //its size |
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325 | |
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326 | |
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327 | logicWorld = new G4LogicalVolume(solidWorld, //its solid |
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328 | WorldMaterial, //its material |
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329 | "World"); //its name |
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330 | |
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331 | physiWorld = new G4PVPlacement(0, //no rotation |
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332 | G4ThreeVector(), //at (0,0,0) |
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333 | "World", //its name |
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334 | logicWorld, //its logical volume |
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335 | NULL, //its mother volume |
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336 | false, //no boolean operation |
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337 | 0); //copy number |
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338 | |
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339 | // Visualization attributes |
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340 | G4VisAttributes* simpleWorldVisAtt= new G4VisAttributes(G4Colour(1.0,1.0,1.0)); //White |
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341 | simpleWorldVisAtt->SetVisibility(true); |
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342 | logicWorld->SetVisAttributes(simpleWorldVisAtt); |
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343 | |
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344 | |
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345 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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346 | // |
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347 | // Measurement Volume |
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348 | // |
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349 | |
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350 | #if MEASUREVOL |
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351 | |
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352 | solidMeasureVolume = new G4Box("MeasureVolume", //its name |
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353 | MeasureVolumeSizeXY/2,MeasureVolumeSizeXY/2,MeasureVolumeSizeZ/2); //its size |
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354 | |
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355 | logicMeasureVolume = new G4LogicalVolume(solidMeasureVolume, //its solid |
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356 | WorldMaterial, //its material |
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357 | "MeasureVolume"); //its name |
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358 | |
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359 | physiMeasureVolume = new G4PVPlacement(0, //no rotation |
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360 | G4ThreeVector(0.,0.,MeasureVolumePosition), //at (0,0,0) |
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361 | "MeasureVolume", //its name |
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362 | logicMeasureVolume, //its logical volume |
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363 | physiWorld, //its mother volume |
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364 | false, //no boolean operation |
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365 | 0); //copy number |
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366 | |
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367 | // Visualization attributes |
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368 | G4VisAttributes* simpleMeasureVolumeVisAtt= new G4VisAttributes(G4Colour(1.0,1.0,1.0)); //White |
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369 | simpleMeasureVolumeVisAtt->SetVisibility(true); |
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370 | simpleMeasureVolumeVisAtt->SetForceSolid(true); |
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371 | logicMeasureVolume->SetVisAttributes(simpleMeasureVolumeVisAtt); |
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372 | |
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373 | #endif |
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374 | |
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375 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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376 | // |
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377 | //Gap cone. Opening 20 deg. Two separate trapezoids. Iron. |
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378 | // |
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379 | |
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380 | #if GAP |
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381 | |
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382 | //Gap part 1, placed in negative x-direction. |
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383 | |
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384 | solidGap1 = new G4Trd("Gap1", |
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385 | GapSizeX1/2, // Half-length along x at the surface positioned at -dz |
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386 | GapSizeX2/2, // Half-length along x at the surface positioned at +dz |
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387 | GapSizeY1/2, // Half-length along y at the surface positioned at -dz |
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388 | GapSizeY2/2, // Half-length along y at the surface positioned at +dz |
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389 | GapSizeZ/2 ); // Half-length along z axis |
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390 | |
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391 | logicGap1 = new G4LogicalVolume(solidGap1, //its solid |
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392 | GapMaterial, //its material |
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393 | "Gap1"); //its name |
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394 | |
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395 | physiGap1 = new G4PVPlacement(0, //90 deg rotation |
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396 | G4ThreeVector(Gap1PosX,Gap1PosY,Gap1PosZ), //position |
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397 | "Gap1", //its name |
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398 | logicGap1, //its logical volume |
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399 | physiWorld, //its mother volume |
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400 | false, //no boolean operation |
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401 | 0); //copy number |
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402 | |
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403 | //Gap part 2, placed in positive x-direction. |
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404 | |
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405 | solidGap2 = new G4Trd("Gap2", |
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406 | GapSizeX1/2, // Half-length along x at the surface positioned at -dz |
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407 | GapSizeX2/2, // Half-length along x at the surface positioned at +dz |
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408 | GapSizeY1/2, // Half-length along y at the surface positioned at -dz |
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409 | GapSizeY2/2, // Half-length along y at the surface positioned at +dz |
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410 | GapSizeZ/2 ); // Half-length along z axis |
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411 | |
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412 | logicGap2 = new G4LogicalVolume(solidGap2, //its solid |
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413 | GapMaterial, //its material |
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414 | "Gap2"); //its name |
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415 | |
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416 | physiGap2 = new G4PVPlacement(0, //no rotation |
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417 | G4ThreeVector(Gap2PosX,Gap2PosY,Gap2PosZ), //position |
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418 | "Gap2", //its name |
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419 | logicGap2, //its logical volume |
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420 | physiWorld, //its mother volume |
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421 | false, //no boolean operation |
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422 | 0); //copy number |
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423 | |
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424 | // Visualization attributes |
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425 | G4VisAttributes* simpleGap1VisAtt= new G4VisAttributes(G4Colour(0.0,0.0,1.0)); //yellow |
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426 | simpleGap1VisAtt->SetVisibility(true); |
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427 | simpleGap1VisAtt->SetForceSolid(true); |
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428 | logicGap1->SetVisAttributes(simpleGap1VisAtt); |
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429 | |
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430 | G4VisAttributes* simpleGap2VisAtt= new G4VisAttributes(G4Colour(0.0,0.0,1.0)); //yellow |
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431 | simpleGap2VisAtt->SetVisibility(true); |
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432 | simpleGap2VisAtt->SetForceSolid(true); |
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433 | logicGap2->SetVisAttributes(simpleGap2VisAtt); |
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434 | |
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435 | #endif |
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436 | |
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437 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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438 | |
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439 | return physiWorld; |
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440 | } |
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441 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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442 | |
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443 | |
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