1 | // |
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2 | // ******************************************************************** |
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3 | // * License and Disclaimer * |
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4 | // * * |
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5 | // * The Geant4 software is copyright of the Copyright Holders of * |
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6 | // * the Geant4 Collaboration. It is provided under the terms and * |
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7 | // * conditions of the Geant4 Software License, included in the file * |
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8 | // * LICENSE and available at http://cern.ch/geant4/license . These * |
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9 | // * include a list of copyright holders. * |
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10 | // * * |
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11 | // * Neither the authors of this software system, nor their employing * |
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12 | // * institutes,nor the agencies providing financial support for this * |
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13 | // * work make any representation or warranty, express or implied, * |
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14 | // * regarding this software system or assume any liability for its * |
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15 | // * use. Please see the license in the file LICENSE and URL above * |
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16 | // * for the full disclaimer and the limitation of liability. * |
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17 | // * * |
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18 | // * This code implementation is the result of the scientific and * |
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19 | // * technical work of the GEANT4 collaboration. * |
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20 | // * By using, copying, modifying or distributing the software (or * |
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21 | // * any work based on the software) you agree to acknowledge its * |
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22 | // * use in resulting scientific publications, and indicate your * |
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23 | // * acceptance of all terms of the Geant4 Software license. * |
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24 | // ******************************************************************** |
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25 | // |
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26 | // $Id: DetectorConstruction.cc,v 1.4 2007/01/18 09:07:20 hbu Exp $ |
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27 | // GEANT4 tag $Name: $ |
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28 | // |
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29 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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30 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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31 | |
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32 | #include "DetectorConstruction.hh" |
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33 | #include "DetectorMessenger.hh" |
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34 | |
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35 | #include "G4Material.hh" |
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36 | #include "G4Box.hh" |
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37 | #include "G4LogicalVolume.hh" |
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38 | #include "G4PVPlacement.hh" |
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39 | #include "G4UniformMagField.hh" |
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40 | #include "G4PropagatorInField.hh" |
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41 | #include "G4UserLimits.hh" |
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42 | |
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43 | #include "G4GeometryManager.hh" |
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44 | #include "G4PhysicalVolumeStore.hh" |
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45 | #include "G4LogicalVolumeStore.hh" |
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46 | #include "G4SolidStore.hh" |
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47 | |
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48 | #include "G4UnitsTable.hh" |
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49 | |
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50 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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51 | |
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52 | DetectorConstruction::DetectorConstruction() |
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53 | :pBox(0), BoxSize(500*m), aMaterial(0), magField(0) |
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54 | { |
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55 | DefineMaterials(); |
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56 | SetMaterial("Iron"); |
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57 | |
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58 | // create UserLimits |
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59 | userLimits = new G4UserLimits(); |
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60 | |
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61 | // create commands for interactive definition of the detector |
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62 | detectorMessenger = new DetectorMessenger(this); |
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63 | } |
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64 | |
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65 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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66 | |
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67 | DetectorConstruction::~DetectorConstruction() |
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68 | { delete detectorMessenger;} |
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69 | |
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70 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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71 | |
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72 | G4VPhysicalVolume* DetectorConstruction::Construct() |
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73 | { |
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74 | return ConstructVolumes(); |
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75 | } |
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76 | |
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77 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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78 | |
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79 | void DetectorConstruction::DefineMaterials() |
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80 | { |
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81 | G4double a, z, density; |
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82 | |
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83 | new G4Material("Beryllium", z= 4., a= 9.012182*g/mole, density= 1.848*g/cm3); |
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84 | new G4Material("Carbon", z= 6., a= 12.011*g/mole, density= 2.265*g/cm3); |
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85 | new G4Material("Iron", z=26., a= 55.85*g/mole, density= 7.870*g/cm3); |
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86 | |
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87 | // define a vacuum with a restgas pressure typical for accelerators |
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88 | G4double const Torr = atmosphere/760.; // 1 Torr |
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89 | G4double pressure = 10e-9*Torr, temperature = 296.150*kelvin; // 23 Celsius |
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90 | new G4Material("Vacuum", z=7., a=14.01*g/mole, density= 1.516784e-11*kg/m3, |
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91 | kStateGas, temperature, pressure); |
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92 | |
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93 | G4cout << *(G4Material::GetMaterialTable()) << G4endl; |
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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 | G4VPhysicalVolume* DetectorConstruction::ConstructVolumes() |
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99 | { |
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100 | G4GeometryManager::GetInstance()->OpenGeometry(); |
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101 | G4PhysicalVolumeStore::GetInstance()->Clean(); |
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102 | G4LogicalVolumeStore::GetInstance()->Clean(); |
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103 | G4SolidStore::GetInstance()->Clean(); |
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104 | |
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105 | G4Box* |
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106 | sBox = new G4Box("Container", //its name |
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107 | BoxSize/2,BoxSize/2,BoxSize/2); //its dimensions |
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108 | |
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109 | G4LogicalVolume* |
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110 | lBox = new G4LogicalVolume(sBox, //its shape |
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111 | aMaterial, //its material |
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112 | aMaterial->GetName()); //its name |
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113 | |
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114 | lBox->SetUserLimits(userLimits); |
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115 | |
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116 | pBox = new G4PVPlacement(0, //no rotation |
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117 | G4ThreeVector(), //at (0,0,0) |
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118 | lBox, //its logical volume |
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119 | aMaterial->GetName(), //its name |
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120 | 0, //its mother volume |
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121 | false, //no boolean operation |
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122 | 0); //copy number |
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123 | |
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124 | PrintParameters(); |
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125 | |
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126 | // |
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127 | //always return the root volume |
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128 | // |
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129 | return pBox; |
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130 | } |
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131 | |
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132 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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133 | |
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134 | void DetectorConstruction::PrintParameters() |
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135 | { |
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136 | G4cout << "\n The Box is " << G4BestUnit(BoxSize,"Length") |
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137 | << " of " << aMaterial->GetName() << G4endl; |
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138 | } |
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139 | |
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140 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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141 | |
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142 | void DetectorConstruction::SetMaterial(G4String materialChoice) |
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143 | { |
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144 | // search the material by its name |
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145 | G4Material* pttoMaterial = G4Material::GetMaterial(materialChoice); |
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146 | if (pttoMaterial) aMaterial = pttoMaterial; |
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147 | } |
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148 | |
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149 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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150 | |
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151 | void DetectorConstruction::SetSize(G4double value) |
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152 | { |
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153 | BoxSize = value; |
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154 | } |
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155 | |
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156 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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157 | |
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158 | #include "G4FieldManager.hh" |
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159 | #include "G4TransportationManager.hh" |
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160 | |
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161 | void DetectorConstruction::SetMagField(G4double fieldValue) |
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162 | { |
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163 | //apply a global uniform magnetic field along Z axis |
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164 | G4FieldManager* fieldMgr |
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165 | = G4TransportationManager::GetTransportationManager()->GetFieldManager(); |
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166 | |
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167 | if (magField) delete magField; //delete the existing magn field |
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168 | |
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169 | if (fieldValue!=0.) // create a new one if non null |
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170 | { |
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171 | magField = new G4UniformMagField(G4ThreeVector(0.,0.,fieldValue)); |
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172 | fieldMgr->SetDetectorField(magField); |
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173 | fieldMgr->CreateChordFinder(magField); |
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174 | } |
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175 | else |
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176 | { |
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177 | magField = 0; |
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178 | fieldMgr->SetDetectorField(magField); |
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179 | } |
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180 | } |
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181 | |
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182 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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183 | |
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184 | void DetectorConstruction::SetMaxStepSize(G4double val) |
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185 | { |
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186 | // set the maximum allowed step size |
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187 | // |
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188 | if (val <= DBL_MIN) |
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189 | { G4cout << "\n --->warning from SetMaxStepSize: maxStep " |
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190 | << val << " out of range. Command refused" << G4endl; |
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191 | return; |
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192 | } |
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193 | userLimits->SetMaxAllowedStep(val); |
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194 | } |
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195 | |
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196 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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197 | |
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198 | void DetectorConstruction::SetMaxStepLength(G4double val) |
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199 | { |
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200 | // set the maximum length of tracking step |
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201 | // |
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202 | if (val <= DBL_MIN) |
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203 | { G4cout << "\n --->warning from SetMaxStepLength: maxStep " |
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204 | << val << " out of range. Command refused" << G4endl; |
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205 | return; |
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206 | } |
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207 | G4TransportationManager* tmanager = |
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208 | G4TransportationManager::GetTransportationManager(); |
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209 | tmanager->GetPropagatorInField() |
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210 | ->SetLargestAcceptableStep(val); |
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211 | } |
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212 | |
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213 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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214 | |
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215 | #include "G4RunManager.hh" |
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216 | |
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217 | void DetectorConstruction::UpdateGeometry() |
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218 | { |
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219 | G4RunManager::GetRunManager()->DefineWorldVolume(ConstructVolumes()); |
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220 | } |
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221 | |
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222 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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