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: ExN02DetectorConstruction.cc,v 1.21 2008/09/22 16:41:20 maire Exp $ |
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28 | // GEANT4 tag $Name: geant4-09-03-cand-01 $ |
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29 | // |
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30 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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31 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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32 | |
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33 | #include "ExN02DetectorConstruction.hh" |
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34 | #include "ExN02DetectorMessenger.hh" |
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35 | #include "ExN02ChamberParameterisation.hh" |
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36 | #include "ExN02MagneticField.hh" |
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37 | #include "ExN02TrackerSD.hh" |
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38 | |
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39 | #include "G4Material.hh" |
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40 | #include "G4Box.hh" |
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41 | #include "G4LogicalVolume.hh" |
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42 | #include "G4PVPlacement.hh" |
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43 | #include "G4PVParameterised.hh" |
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44 | #include "G4SDManager.hh" |
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45 | #include "G4GeometryTolerance.hh" |
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46 | #include "G4GeometryManager.hh" |
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47 | |
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48 | #include "G4UserLimits.hh" |
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49 | |
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50 | #include "G4VisAttributes.hh" |
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51 | #include "G4Colour.hh" |
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52 | |
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53 | #include "G4ios.hh" |
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54 | |
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55 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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56 | |
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57 | ExN02DetectorConstruction::ExN02DetectorConstruction() |
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58 | :solidWorld(0), logicWorld(0), physiWorld(0), |
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59 | solidTarget(0), logicTarget(0), physiTarget(0), |
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60 | solidTracker(0),logicTracker(0),physiTracker(0), |
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61 | solidChamber(0),logicChamber(0),physiChamber(0), |
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62 | TargetMater(0), ChamberMater(0),chamberParam(0), |
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63 | stepLimit(0), fpMagField(0), |
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64 | fWorldLength(0.), fTargetLength(0.), fTrackerLength(0.), |
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65 | NbOfChambers(0) , ChamberWidth(0.), ChamberSpacing(0.) |
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66 | { |
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67 | fpMagField = new ExN02MagneticField(); |
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68 | detectorMessenger = new ExN02DetectorMessenger(this); |
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69 | } |
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70 | |
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71 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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72 | |
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73 | ExN02DetectorConstruction::~ExN02DetectorConstruction() |
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74 | { |
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75 | delete fpMagField; |
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76 | delete stepLimit; |
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77 | delete chamberParam; |
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78 | delete detectorMessenger; |
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79 | } |
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80 | |
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81 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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82 | |
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83 | G4VPhysicalVolume* ExN02DetectorConstruction::Construct() |
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84 | { |
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85 | //--------- Material definition --------- |
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86 | |
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87 | G4double a, z; |
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88 | G4double density, temperature, pressure; |
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89 | G4int nel; |
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90 | |
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91 | //Air |
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92 | G4Element* N = new G4Element("Nitrogen", "N", z=7., a= 14.01*g/mole); |
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93 | G4Element* O = new G4Element("Oxygen" , "O", z=8., a= 16.00*g/mole); |
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94 | |
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95 | G4Material* Air = new G4Material("Air", density= 1.29*mg/cm3, nel=2); |
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96 | Air->AddElement(N, 70*perCent); |
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97 | Air->AddElement(O, 30*perCent); |
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98 | |
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99 | //Lead |
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100 | G4Material* Pb = |
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101 | new G4Material("Lead", z=82., a= 207.19*g/mole, density= 11.35*g/cm3); |
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102 | |
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103 | //Xenon gas |
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104 | G4Material* Xenon = |
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105 | new G4Material("XenonGas", z=54., a=131.29*g/mole, density= 5.458*mg/cm3, |
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106 | kStateGas, temperature= 293.15*kelvin, pressure= 1*atmosphere); |
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107 | |
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108 | // Print all the materials defined. |
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109 | // |
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110 | G4cout << G4endl << "The materials defined are : " << G4endl << G4endl; |
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111 | G4cout << *(G4Material::GetMaterialTable()) << G4endl; |
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112 | |
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113 | //--------- Sizes of the principal geometrical components (solids) --------- |
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114 | |
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115 | NbOfChambers = 5; |
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116 | ChamberWidth = 20*cm; |
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117 | ChamberSpacing = 80*cm; |
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118 | |
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119 | fTrackerLength = (NbOfChambers+1)*ChamberSpacing; // Full length of Tracker |
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120 | fTargetLength = 5.0 * cm; // Full length of Target |
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121 | |
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122 | TargetMater = Pb; |
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123 | ChamberMater = Xenon; |
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124 | |
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125 | fWorldLength= 1.2 *(fTargetLength+fTrackerLength); |
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126 | |
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127 | G4double targetSize = 0.5*fTargetLength; // Half length of the Target |
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128 | G4double trackerSize = 0.5*fTrackerLength; // Half length of the Tracker |
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129 | |
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130 | //--------- Definitions of Solids, Logical Volumes, Physical Volumes --------- |
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131 | |
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132 | //------------------------------ |
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133 | // World |
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134 | //------------------------------ |
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135 | |
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136 | G4double HalfWorldLength = 0.5*fWorldLength; |
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137 | |
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138 | G4GeometryManager::GetInstance()->SetWorldMaximumExtent(fWorldLength); |
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139 | G4cout << "Computed tolerance = " |
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140 | << G4GeometryTolerance::GetInstance()->GetSurfaceTolerance()/mm |
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141 | << " mm" << G4endl; |
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142 | |
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143 | solidWorld= new G4Box("world",HalfWorldLength,HalfWorldLength,HalfWorldLength); |
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144 | logicWorld= new G4LogicalVolume( solidWorld, Air, "World", 0, 0, 0); |
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145 | |
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146 | // Must place the World Physical volume unrotated at (0,0,0). |
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147 | // |
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148 | physiWorld = new G4PVPlacement(0, // no rotation |
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149 | G4ThreeVector(), // at (0,0,0) |
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150 | logicWorld, // its logical volume |
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151 | "World", // its name |
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152 | 0, // its mother volume |
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153 | false, // no boolean operations |
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154 | 0); // copy number |
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155 | |
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156 | //------------------------------ |
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157 | // Target |
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158 | //------------------------------ |
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159 | |
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160 | G4ThreeVector positionTarget = G4ThreeVector(0,0,-(targetSize+trackerSize)); |
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161 | |
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162 | solidTarget = new G4Box("target",targetSize,targetSize,targetSize); |
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163 | logicTarget = new G4LogicalVolume(solidTarget,TargetMater,"Target",0,0,0); |
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164 | physiTarget = new G4PVPlacement(0, // no rotation |
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165 | positionTarget, // at (x,y,z) |
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166 | logicTarget, // its logical volume |
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167 | "Target", // its name |
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168 | logicWorld, // its mother volume |
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169 | false, // no boolean operations |
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170 | 0); // copy number |
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171 | |
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172 | G4cout << "Target is " << fTargetLength/cm << " cm of " |
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173 | << TargetMater->GetName() << G4endl; |
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174 | |
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175 | //------------------------------ |
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176 | // Tracker |
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177 | //------------------------------ |
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178 | |
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179 | G4ThreeVector positionTracker = G4ThreeVector(0,0,0); |
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180 | |
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181 | solidTracker = new G4Box("tracker",trackerSize,trackerSize,trackerSize); |
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182 | logicTracker = new G4LogicalVolume(solidTracker , Air, "Tracker",0,0,0); |
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183 | physiTracker = new G4PVPlacement(0, // no rotation |
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184 | positionTracker, // at (x,y,z) |
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185 | logicTracker, // its logical volume |
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186 | "Tracker", // its name |
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187 | logicWorld, // its mother volume |
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188 | false, // no boolean operations |
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189 | 0); // copy number |
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190 | |
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191 | //------------------------------ |
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192 | // Tracker segments |
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193 | //------------------------------ |
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194 | // |
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195 | // An example of Parameterised volumes |
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196 | // dummy values for G4Box -- modified by parameterised volume |
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197 | |
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198 | solidChamber = new G4Box("chamber", 100*cm, 100*cm, 10*cm); |
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199 | logicChamber = new G4LogicalVolume(solidChamber,ChamberMater,"Chamber",0,0,0); |
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200 | |
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201 | G4double firstPosition = -trackerSize + 0.5*ChamberWidth; |
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202 | G4double firstLength = fTrackerLength/10; |
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203 | G4double lastLength = fTrackerLength; |
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204 | |
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205 | chamberParam = new ExN02ChamberParameterisation( |
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206 | NbOfChambers, // NoChambers |
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207 | firstPosition, // Z of center of first |
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208 | ChamberSpacing, // Z spacing of centers |
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209 | ChamberWidth, // Width Chamber |
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210 | firstLength, // lengthInitial |
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211 | lastLength); // lengthFinal |
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212 | |
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213 | // dummy value : kZAxis -- modified by parameterised volume |
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214 | // |
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215 | physiChamber = new G4PVParameterised( |
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216 | "Chamber", // their name |
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217 | logicChamber, // their logical volume |
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218 | logicTracker, // Mother logical volume |
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219 | kZAxis, // Are placed along this axis |
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220 | NbOfChambers, // Number of chambers |
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221 | chamberParam); // The parametrisation |
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222 | |
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223 | G4cout << "There are " << NbOfChambers << " chambers in the tracker region. " |
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224 | << "The chambers are " << ChamberWidth/mm << " mm of " |
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225 | << ChamberMater->GetName() << "\n The distance between chamber is " |
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226 | << ChamberSpacing/cm << " cm" << G4endl; |
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227 | |
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228 | //------------------------------------------------ |
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229 | // Sensitive detectors |
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230 | //------------------------------------------------ |
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231 | |
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232 | G4SDManager* SDman = G4SDManager::GetSDMpointer(); |
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233 | |
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234 | G4String trackerChamberSDname = "ExN02/TrackerChamberSD"; |
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235 | ExN02TrackerSD* aTrackerSD = new ExN02TrackerSD( trackerChamberSDname ); |
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236 | SDman->AddNewDetector( aTrackerSD ); |
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237 | logicChamber->SetSensitiveDetector( aTrackerSD ); |
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238 | |
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239 | //--------- Visualization attributes ------------------------------- |
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240 | |
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241 | G4VisAttributes* BoxVisAtt= new G4VisAttributes(G4Colour(1.0,1.0,1.0)); |
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242 | logicWorld ->SetVisAttributes(BoxVisAtt); |
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243 | logicTarget ->SetVisAttributes(BoxVisAtt); |
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244 | logicTracker->SetVisAttributes(BoxVisAtt); |
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245 | |
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246 | G4VisAttributes* ChamberVisAtt = new G4VisAttributes(G4Colour(1.0,1.0,0.0)); |
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247 | logicChamber->SetVisAttributes(ChamberVisAtt); |
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248 | |
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249 | //--------- example of User Limits ------------------------------- |
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250 | |
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251 | // below is an example of how to set tracking constraints in a given |
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252 | // logical volume(see also in N02PhysicsList how to setup the processes |
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253 | // G4StepLimiter or G4UserSpecialCuts). |
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254 | |
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255 | // Sets a max Step length in the tracker region, with G4StepLimiter |
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256 | // |
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257 | G4double maxStep = 0.5*ChamberWidth; |
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258 | stepLimit = new G4UserLimits(maxStep); |
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259 | logicTracker->SetUserLimits(stepLimit); |
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260 | |
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261 | // Set additional contraints on the track, with G4UserSpecialCuts |
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262 | // |
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263 | // G4double maxLength = 2*fTrackerLength, maxTime = 0.1*ns, minEkin = 10*MeV; |
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264 | // logicTracker->SetUserLimits(new G4UserLimits(maxStep,maxLength,maxTime, |
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265 | // minEkin)); |
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266 | |
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267 | return physiWorld; |
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268 | } |
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269 | |
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270 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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271 | |
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272 | void ExN02DetectorConstruction::setTargetMaterial(G4String materialName) |
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273 | { |
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274 | // search the material by its name |
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275 | G4Material* pttoMaterial = G4Material::GetMaterial(materialName); |
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276 | if (pttoMaterial) |
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277 | {TargetMater = pttoMaterial; |
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278 | logicTarget->SetMaterial(pttoMaterial); |
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279 | G4cout << "\n----> The target is " << fTargetLength/cm << " cm of " |
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280 | << materialName << G4endl; |
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281 | } |
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282 | } |
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283 | |
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284 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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285 | |
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286 | void ExN02DetectorConstruction::setChamberMaterial(G4String materialName) |
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287 | { |
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288 | // search the material by its name |
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289 | G4Material* pttoMaterial = G4Material::GetMaterial(materialName); |
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290 | if (pttoMaterial) |
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291 | {ChamberMater = pttoMaterial; |
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292 | logicChamber->SetMaterial(pttoMaterial); |
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293 | G4cout << "\n----> The chambers are " << ChamberWidth/cm << " cm of " |
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294 | << materialName << G4endl; |
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295 | } |
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296 | } |
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297 | |
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298 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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299 | |
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300 | void ExN02DetectorConstruction::SetMagField(G4double fieldValue) |
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301 | { |
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302 | fpMagField->SetFieldValue(fieldValue); |
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303 | } |
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304 | |
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305 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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306 | |
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307 | void ExN02DetectorConstruction::SetMaxStep(G4double maxStep) |
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308 | { |
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309 | if ((stepLimit)&&(maxStep>0.)) stepLimit->SetMaxAllowedStep(maxStep); |
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310 | } |
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311 | |
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312 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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