Hadr04/src/DetectorConstruction.cc

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0026 /// \file DetectorConstruction.cc
0027 /// \brief Implementation of the DetectorConstruction class
0028 //
0029 //
0030
0031 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0032 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0033
0034 #include "DetectorConstruction.hh"
0035
0036 #include "DetectorMessenger.hh"
0037
0038 #include "G4Box.hh"
0039 #include "G4GeometryManager.hh"
0040 #include "G4LogicalVolume.hh"
0041 #include "G4LogicalVolumeStore.hh"
0042 #include "G4Material.hh"
0043 #include "G4NistManager.hh"
0044 #include "G4PVPlacement.hh"
0045 #include "G4PhysicalVolumeStore.hh"
0046 #include "G4RunManager.hh"
0047 #include "G4SolidStore.hh"
0048 #include "G4SystemOfUnits.hh"
0049 #include "G4UnitsTable.hh"
0050
0051 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0052
0053 DetectorConstruction::DetectorConstruction()
0054 {
0055   fBoxSize = 1 * m;
0056   DefineMaterials();
0057   SetMaterial("Water_ts");
0058   fDetectorMessenger = new DetectorMessenger(this);
0059 }
0060
0061 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0062
0063 DetectorConstruction::~DetectorConstruction()
0064 {
0065   delete fDetectorMessenger;
0066 }
0067
0068 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0069
0070 G4VPhysicalVolume* DetectorConstruction::Construct()
0071 {
0072   return ConstructVolumes();
0073 }
0074
0075 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0076
0077 void DetectorConstruction::DefineMaterials()
0078 {
0079   // specific element name for thermal neutronHP
0080   // (see G4ParticleHPThermalScatteringNames.cc)
0081
0082   G4int ncomponents, natoms;
0083
0084   // pressurized water
0085   G4Element* H = new G4Element("TS_H_of_Water", "H", 1., 1.0079 * g / mole);
0086   G4Element* O = new G4Element("Oxygen", "O", 8., 16.00 * g / mole);
0087   G4Material* H2O = new G4Material("Water_ts", 1.000 * g / cm3, ncomponents = 2, kStateLiquid,
0088                                    593 * kelvin, 150 * bar);
0089   H2O->AddElement(H, natoms = 2);
0090   H2O->AddElement(O, natoms = 1);
0091   H2O->GetIonisation()->SetMeanExcitationEnergy(78.0 * eV);
0092
0093   // heavy water
0094   G4Isotope* H2 = new G4Isotope("H2", 1, 2);
0095   G4Element* D = new G4Element("TS_D_of_Heavy_Water", "D", 1);
0096   D->AddIsotope(H2, 100 * perCent);
0097   G4Material* D2O = new G4Material("HeavyWater", 1.11 * g / cm3, ncomponents = 2, kStateLiquid,
0098                                    293.15 * kelvin, 1 * atmosphere);
0099   D2O->AddElement(D, natoms = 2);
0100   D2O->AddElement(O, natoms = 1);
0101
0102   // graphite
0103   G4Isotope* C12 = new G4Isotope("C12", 6, 12);
0104   G4Element* C = new G4Element("TS_C_of_Graphite", "C", ncomponents = 1);
0105   C->AddIsotope(C12, 100. * perCent);
0106   G4Material* graphite = new G4Material("graphite", 2.27 * g / cm3, ncomponents = 1, kStateSolid,
0107                                         293 * kelvin, 1 * atmosphere);
0108   graphite->AddElement(C, natoms = 1);
0109
0110   /// G4cout << *(G4Material::GetMaterialTable()) << G4endl;
0111 }
0112
0113 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0114
0115 G4Material* DetectorConstruction::MaterialWithSingleIsotope(G4String name, G4String symbol,
0116                                                             G4double density, G4int Z, G4int A)
0117 {
0118   // define a material from an isotope
0119   //
0120   G4int ncomponents;
0121   G4double abundance, massfraction;
0122
0123   G4Isotope* isotope = new G4Isotope(symbol, Z, A);
0124
0125   G4Element* element = new G4Element(name, symbol, ncomponents = 1);
0126   element->AddIsotope(isotope, abundance = 100. * perCent);
0127
0128   G4Material* material = new G4Material(name, density, ncomponents = 1);
0129   material->AddElement(element, massfraction = 100. * perCent);
0130
0131   return material;
0132 }
0133
0134 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0135
0136 G4VPhysicalVolume* DetectorConstruction::ConstructVolumes()
0137 {
0138   // Cleanup old geometry
0139   G4GeometryManager::GetInstance()->OpenGeometry();
0140   G4PhysicalVolumeStore::GetInstance()->Clean();
0141   G4LogicalVolumeStore::GetInstance()->Clean();
0142   G4SolidStore::GetInstance()->Clean();
0143
0144   G4Box* sBox = new G4Box("Container",  // its name
0145                           fBoxSize / 2, fBoxSize / 2, fBoxSize / 2);  // its dimensions
0146
0147   fLBox = new G4LogicalVolume(sBox,  // its shape
0148                               fMaterial,  // its material
0149                               fMaterial->GetName());  // its name
0150
0151   fPBox = new G4PVPlacement(0,  // no rotation
0152                             G4ThreeVector(),  // at (0,0,0)
0153                             fLBox,  // its logical volume
0154                             fMaterial->GetName(),  // its name
0155                             0,  // its mother  volume
0156                             false,  // no boolean operation
0157                             0);  // copy number
0158
0159   PrintParameters();
0160
0161   // always return the root volume
0162   //
0163   return fPBox;
0164 }
0165
0166 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0167
0168 void DetectorConstruction::PrintParameters()
0169 {
0170   G4cout << "\n The Box is " << G4BestUnit(fBoxSize, "Length") << " of " << fMaterial->GetName()
0171          << "\n \n"
0172          << fMaterial << G4endl;
0173 }
0174
0175 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0176
0177 void DetectorConstruction::SetMaterial(G4String materialChoice)
0178 {
0179   // search the material by its name
0180   G4Material* pttoMaterial = G4NistManager::Instance()->FindOrBuildMaterial(materialChoice);
0181
0182   if (pttoMaterial) {
0183     if (fMaterial != pttoMaterial) {
0184       fMaterial = pttoMaterial;
0185       if (fLBox) {
0186         fLBox->SetMaterial(pttoMaterial);
0187       }
0188       G4RunManager::GetRunManager()->PhysicsHasBeenModified();
0189     }
0190   }
0191   else {
0192     G4cout << "\n--> warning from DetectorConstruction::SetMaterial : " << materialChoice
0193            << " not found" << G4endl;
0194   }
0195 }
0196
0197 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0198
0199 void DetectorConstruction::SetSize(G4double value)
0200 {
0201   fBoxSize = value;
0202   G4RunManager::GetRunManager()->ReinitializeGeometry();
0203 }
0204
0205 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......