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Please see the license in the file LICENSE and URL above * 16 // * for the full disclaimer and the limitation of liability. * 17 // * * 18 // * This code implementation is the result of the scientific and * 19 // * technical work of the GEANT4 collaboration. * 20 // * By using, copying, modifying or distributing the software (or * 21 // * any work based on the software) you agree to acknowledge its * 22 // * use in resulting scientific publications, and indicate your * 23 // * acceptance of all terms of the Geant4 Software license. * 24 // ******************************************************************** 25 // 26 /// \file electromagnetic/TestEm10/src/DetectorWatase86.cc 27 /// \brief Implementation of the DetectorWatase86 class 28 // 29 // 30 // 31 // 32 33 #include "DetectorWatase86.hh" 34 35 #include "Materials.hh" 36 #include "SensitiveDetector.hh" 37 38 #include "G4Box.hh" 39 #include "G4FieldManager.hh" 40 #include "G4LogicalVolume.hh" 41 #include "G4Material.hh" 42 #include "G4PVPlacement.hh" 43 #include "G4Region.hh" 44 #include "G4SDManager.hh" 45 #include "G4SystemOfUnits.hh" 46 #include "G4TransportationManager.hh" 47 #include "G4UniformMagField.hh" 48 #include "G4UnitsTable.hh" 49 #include "G4ios.hh" 50 51 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... 52 53 DetectorWatase86::DetectorWatase86() : fRadiatorDescription(0) {} 54 55 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... 56 57 DetectorWatase86::~DetectorWatase86() 58 { 59 // delete fRadiatorDescription; 60 // the description is deleted in detector construction 61 } 62 63 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... 64 65 G4VPhysicalVolume* DetectorWatase86::Construct() 66 { 67 // Geometry parameters 68 // 69 70 G4cout << "DetectorWatase86 setup" << G4endl; 71 72 G4double worldSizeZ = 400. * cm; 73 G4double worldSizeR = 20. * cm; 74 75 // Radiator and detector parameters 76 77 G4double radThickness = 0.04 * mm; 78 G4double gasGap = 0.126 * mm; 79 G4double foilGasRatio = radThickness / (radThickness + gasGap); 80 G4double foilNumber = 300; 81 82 G4double absorberThickness = 30.0 * mm; 83 G4double absorberRadius = 100. * mm; 84 85 G4double windowThick = 51.0 * micrometer; 86 G4double electrodeThick = 10.0 * micrometer; 87 G4double gapThick = 10.0 * cm; 88 G4double detGap = 0.01 * mm; 89 90 G4double startZ = 100.0 * mm; 91 92 // Materials 93 // 94 95 // Change to create materials using NIST 96 G4Material* li = Materials::GetInstance()->GetMaterial("Li"); 97 G4Material* he = Materials::GetInstance()->GetMaterial("He"); 98 G4Material* xe10CH4 = Materials::GetInstance()->GetMaterial("Xe10CH4"); 99 100 G4double foilDensity = li->GetDensity(); 101 G4double gasDensity = he->GetDensity(); 102 G4double totDensity = foilDensity * foilGasRatio + gasDensity * (1.0 - foilGasRatio); 103 104 G4double fractionFoil = foilDensity * foilGasRatio / totDensity; 105 G4double fractionGas = gasDensity * (1.0 - foilGasRatio) / totDensity; 106 G4Material* radiatorMat = new G4Material("radiatorMat", totDensity, 2); 107 radiatorMat->AddMaterial(li, fractionFoil); 108 radiatorMat->AddMaterial(he, fractionGas); 109 110 // Radiator description 111 fRadiatorDescription = new RadiatorDescription; 112 fRadiatorDescription->fFoilMaterial = li; // CH2; // Kapton; // Mylar ; // Li ; // CH2 ; 113 fRadiatorDescription->fGasMaterial = he; // CO2; // He; // 114 fRadiatorDescription->fFoilThickness = radThickness; 115 fRadiatorDescription->fGasThickness = gasGap; 116 fRadiatorDescription->fFoilNumber = foilNumber; 117 118 G4Material* worldMaterial = he; // CO2; 119 G4Material* absorberMaterial = xe10CH4; 120 121 // Volumes 122 // 123 124 G4VSolid* solidWorld = new G4Box("World", worldSizeR, worldSizeR, worldSizeZ / 2.); 125 126 G4LogicalVolume* logicWorld = new G4LogicalVolume(solidWorld, worldMaterial, "World"); 127 128 G4VPhysicalVolume* physicsWorld = 129 new G4PVPlacement(0, G4ThreeVector(), "World", logicWorld, 0, false, 0); 130 131 // TR radiator envelope 132 133 G4double radThick = foilNumber * (radThickness + gasGap) - gasGap + detGap; 134 G4double radZ = startZ + 0.5 * radThick; 135 136 G4VSolid* solidRadiator = 137 new G4Box("Radiator", 1.1 * absorberRadius, 1.1 * absorberRadius, 0.5 * radThick); 138 139 G4LogicalVolume* logicRadiator = new G4LogicalVolume(solidRadiator, radiatorMat, "Radiator"); 140 141 new G4PVPlacement(0, G4ThreeVector(0, 0, radZ), "Radiator", logicRadiator, physicsWorld, false, 142 0); 143 144 fRadiatorDescription->fLogicalVolume = logicRadiator; 145 146 // create region for radiator 147 148 G4Region* radRegion = new G4Region("XTRradiator"); 149 radRegion->AddRootLogicalVolume(logicRadiator); 150 151 G4double windowZ = startZ + radThick + windowThick / 2. + 15.0 * mm; 152 153 G4double gapZ = windowZ + windowThick / 2. + gapThick / 2. + 0.01 * mm; 154 155 G4double electrodeZ = gapZ + gapThick / 2. + electrodeThick / 2. + 0.01 * mm; 156 157 // Absorber 158 159 G4double absorberZ = electrodeZ + electrodeThick / 2. + absorberThickness / 2. + 0.01 * mm; 160 161 G4VSolid* solidAbsorber = 162 new G4Box("Absorber", absorberRadius, absorberRadius, absorberThickness / 2.); 163 164 G4LogicalVolume* logicAbsorber = new G4LogicalVolume(solidAbsorber, absorberMaterial, "Absorber"); 165 166 new G4PVPlacement(0, G4ThreeVector(0., 0., absorberZ), "Absorber", logicAbsorber, physicsWorld, 167 false, 0); 168 169 G4Region* regGasDet = new G4Region("XTRdEdxDetector"); 170 regGasDet->AddRootLogicalVolume(logicAbsorber); 171 172 // Sensitive Detectors: Absorber 173 174 SensitiveDetector* sd = new SensitiveDetector("AbsorberSD"); 175 G4SDManager::GetSDMpointer()->AddNewDetector(sd); 176 logicAbsorber->SetSensitiveDetector(sd); 177 178 // Print geometry parameters 179 180 G4cout << "\n The WORLD is made of " << worldSizeZ / mm << "mm of " 181 << worldMaterial->GetName(); 182 G4cout << ", the transverse size (R) of the world is " << worldSizeR / mm << " mm. " << G4endl; 183 G4cout << " The ABSORBER is made of " << absorberThickness / mm << "mm of " 184 << absorberMaterial->GetName(); 185 G4cout << ", the transverse size (R) is " << absorberRadius / mm << " mm. " << G4endl; 186 G4cout << " Z position of the (middle of the) absorber " << absorberZ / mm << " mm." << G4endl; 187 188 G4cout << "radZ = " << radZ / mm << " mm" << G4endl; 189 G4cout << "startZ = " << startZ / mm << " mm" << G4endl; 190 191 G4cout << "fRadThick = " << radThick / mm << " mm" << G4endl; 192 G4cout << "fFoilNumber = " << foilNumber << G4endl; 193 G4cout << "fRadiatorMat = " << radiatorMat->GetName() << G4endl; 194 G4cout << "WorldMaterial = " << worldMaterial->GetName() << G4endl; 195 G4cout << G4endl; 196 197 return physicsWorld; 198 } 199 200 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... 201