TestEm15/src/DetectorConstruction.cc

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0026 /// \file electromagnetic/TestEm15/src/DetectorConstruction.cc
0027 /// \brief Implementation of the DetectorConstruction class
0028 //
0029 //
0030 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0031 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0032
0033 #include "DetectorConstruction.hh"
0034
0035 #include "DetectorMessenger.hh"
0036
0037 #include "G4Box.hh"
0038 #include "G4GeometryManager.hh"
0039 #include "G4LogicalVolume.hh"
0040 #include "G4LogicalVolumeStore.hh"
0041 #include "G4Material.hh"
0042 #include "G4NistManager.hh"
0043 #include "G4PVPlacement.hh"
0044 #include "G4PhysicalConstants.hh"
0045 #include "G4PhysicalVolumeStore.hh"
0046 #include "G4SolidStore.hh"
0047 #include "G4SystemOfUnits.hh"
0048 #include "G4UnitsTable.hh"
0049
0050 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0051
0052 DetectorConstruction::DetectorConstruction()
0053   : G4VUserDetectorConstruction(),
0054     fWorld(0),
0055     fBox(0),
0056     fMaterial(0),
0057     fWMaterial(0),
0058     fDetectorMessenger(0)
0059 {
0060   fBoxSize = 100 * m;
0061   fWorldSize = 1.2 * fBoxSize;
0062   DefineMaterials();
0063   SetMaterial("Water");
0064   fDetectorMessenger = new DetectorMessenger(this);
0065 }
0066
0067 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0068
0069 DetectorConstruction::~DetectorConstruction()
0070 {
0071   delete fDetectorMessenger;
0072 }
0073
0074 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0075
0076 G4VPhysicalVolume* DetectorConstruction::Construct()
0077 {
0078   return ConstructVolumes();
0079 }
0080
0081 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0082
0083 void DetectorConstruction::DefineMaterials()
0084 {
0085   //
0086   // define Elements
0087   //
0088   G4double z, a;
0089
0090   G4Element* H = new G4Element("Hydrogen", "H", z = 1., a = 1.01 * g / mole);
0091   G4Element* N = new G4Element("Nitrogen", "N", z = 7., a = 14.01 * g / mole);
0092   G4Element* O = new G4Element("Oxygen", "O", z = 8., a = 16.00 * g / mole);
0093   G4Element* Na = new G4Element("Sodium", "Na", z = 11., a = 22.99 * g / mole);
0094   G4Element* Ge = new G4Element("Germanium", "Ge", z = 32., a = 72.59 * g / mole);
0095   G4Element* I = new G4Element("Iodine", "I", z = 53., a = 126.90 * g / mole);
0096   G4Element* Bi = new G4Element("Bismuth", "Bi", z = 83., a = 208.98 * g / mole);
0097
0098   //
0099   // define materials
0100   //
0101   G4double density;
0102   G4int ncomponents, natoms;
0103   G4double fractionmass;
0104
0105   G4Material* Air = new G4Material("Air", density = 1.290 * mg / cm3, ncomponents = 2);
0106   Air->AddElement(N, fractionmass = 70. * perCent);
0107   Air->AddElement(O, fractionmass = 30. * perCent);
0108
0109   G4Material* H2l = new G4Material("H2liquid", density = 70.8 * mg / cm3, ncomponents = 1);
0110   H2l->AddElement(H, fractionmass = 1.);
0111
0112   G4Material* H2O = new G4Material("Water", density = 1.000 * g / cm3, ncomponents = 2);
0113   H2O->AddElement(H, natoms = 2);
0114   H2O->AddElement(O, natoms = 1);
0115   H2O->SetChemicalFormula("H_2O");
0116   H2O->GetIonisation()->SetMeanExcitationEnergy(75.0 * eV);
0117
0118   new G4Material("liquidArgon", z = 18., a = 39.95 * g / mole, density = 1.390 * g / cm3);
0119
0120   new G4Material("Carbon", z = 6., a = 12.01 * g / mole, density = 2.267 * g / cm3);
0121
0122   new G4Material("Aluminium", z = 13., a = 26.98 * g / mole, density = 2.700 * g / cm3);
0123
0124   new G4Material("Silicon", z = 14., a = 28.09 * g / mole, density = 2.330 * g / cm3);
0125
0126   new G4Material("Germanium", z = 32., a = 72.61 * g / mole, density = 5.323 * g / cm3);
0127
0128   G4Material* NaI = new G4Material("NaI", density = 3.67 * g / cm3, ncomponents = 2);
0129   NaI->AddElement(Na, natoms = 1);
0130   NaI->AddElement(I, natoms = 1);
0131   NaI->GetIonisation()->SetMeanExcitationEnergy(452 * eV);
0132
0133   G4Material* Iod = new G4Material("Iodine", density = 4.93 * g / cm3, ncomponents = 1);
0134   Iod->AddElement(I, natoms = 1);
0135
0136   G4Material* BGO = new G4Material("BGO", density = 7.10 * g / cm3, ncomponents = 3);
0137   BGO->AddElement(O, natoms = 12);
0138   BGO->AddElement(Ge, natoms = 3);
0139   BGO->AddElement(Bi, natoms = 4);
0140
0141   new G4Material("Iron", z = 26., a = 55.85 * g / mole, density = 7.870 * g / cm3);
0142
0143   new G4Material("Tungsten", z = 74., a = 183.85 * g / mole, density = 19.30 * g / cm3);
0144
0145   new G4Material("Lead", z = 82., a = 207.19 * g / mole, density = 11.35 * g / cm3);
0146
0147   new G4Material("Uranium", z = 92., a = 238.03 * g / mole, density = 18.95 * g / cm3);
0148
0149   density = universe_mean_density;  // from PhysicalConstants.h
0150   G4double pressure = 3.e-18 * pascal;
0151   G4double temperature = 2.73 * kelvin;
0152   G4Material* vacuum = new G4Material("Galactic", z = 1, a = 1.008 * g / mole, density, kStateGas,
0153                                       temperature, pressure);
0154
0155   G4cout << *(G4Material::GetMaterialTable()) << G4endl;
0156
0157   // default material
0158   fWMaterial = vacuum;
0159 }
0160
0161 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0162
0163 G4VPhysicalVolume* DetectorConstruction::ConstructVolumes()
0164 {
0165   // Cleanup old geometry
0166   G4GeometryManager::GetInstance()->OpenGeometry();
0167   G4PhysicalVolumeStore::GetInstance()->Clean();
0168   G4LogicalVolumeStore::GetInstance()->Clean();
0169   G4SolidStore::GetInstance()->Clean();
0170
0171   // World
0172   //
0173   G4Box* sWorld = new G4Box("World",  // name
0174                             fWorldSize / 2, fWorldSize / 2, fWorldSize / 2);  // dimensions
0175
0176   G4LogicalVolume* lWorld = new G4LogicalVolume(sWorld,  // shape
0177                                                 fWMaterial,  // material
0178                                                 "World");  // name
0179
0180   fWorld = new G4PVPlacement(0,  // no rotation
0181                              G4ThreeVector(),  // at (0,0,0)
0182                              lWorld,  // logical volume
0183                              "World",  // name
0184                              0,  // mother  volume
0185                              false,  // no boolean operation
0186                              0);  // copy number
0187
0188   // Box
0189   //
0190   G4Box* sBox = new G4Box("Container",  // its name
0191                           fBoxSize / 2, fBoxSize / 2, fBoxSize / 2);  // its dimensions
0192
0193   G4LogicalVolume* lBox = new G4LogicalVolume(sBox,  // its shape
0194                                               fMaterial,  // its material
0195                                               fMaterial->GetName());  // its name
0196
0197   fBox = new G4PVPlacement(0,  // no rotation
0198                            G4ThreeVector(),  // at (0,0,0)
0199                            lBox,  // its logical volume
0200                            fMaterial->GetName(),  // its name
0201                            lWorld,  // its mother  volume
0202                            false,  // no boolean operation
0203                            0);  // copy number
0204
0205   PrintParameters();
0206
0207   // always return the root volume
0208   //
0209   return fWorld;
0210 }
0211
0212 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0213
0214 void DetectorConstruction::PrintParameters()
0215 {
0216   G4cout << "\n The Box is " << G4BestUnit(fBoxSize, "Length") << " of " << fMaterial->GetName()
0217          << G4endl;
0218 }
0219
0220 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0221
0222 void DetectorConstruction::SetMaterial(G4String materialChoice)
0223 {
0224   // search the material by its name
0225   G4Material* pttoMaterial = G4NistManager::Instance()->FindOrBuildMaterial(materialChoice);
0226
0227   if (pttoMaterial) {
0228     fMaterial = pttoMaterial;
0229     UpdateGeometry();
0230   }
0231   else {
0232     G4cout << "\n--> warning from DetectorConstruction::SetMaterial : " << materialChoice
0233            << " not found" << G4endl;
0234   }
0235 }
0236
0237 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0238
0239 void DetectorConstruction::SetSize(G4double value)
0240 {
0241   fBoxSize = value;
0242   fWorldSize = 1.2 * fBoxSize;
0243   UpdateGeometry();
0244 }
0245
0246 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0247
0248 #include "G4RunManager.hh"
0249
0250 void DetectorConstruction::UpdateGeometry()
0251 {
0252   if (fWorld) G4RunManager::GetRunManager()->DefineWorldVolume(ConstructVolumes());
0253 }
0254
0255 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......