Hadr03/src/DetectorConstruction.cc

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0025 //
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 = 10 * m;
0056   DefineMaterials();
0057   SetMaterial("Molybdenum98");
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   // define a Material from isotopes
0080   //
0081   MaterialWithSingleIsotope("Molybdenum98", "Mo98", 10.28 * g / cm3, 42, 98);
0082
0083   // NE213
0084   G4Element* H = new G4Element("Hydrogen", "H", 1., 1.01 * g / mole);
0085   G4Element* C = new G4Element("Carbon", "C", 6., 12.00 * g / mole);
0086   G4Material* ne213 = new G4Material("NE213", 0.874 * g / cm3, 2);
0087   ne213->AddElement(H, 9.2 * perCent);
0088   ne213->AddElement(C, 90.8 * perCent);
0089
0090   G4Material* hydrogen = new G4Material("hydrogen", 1.0 * g / cm3, 1);
0091   hydrogen->AddElement(H, 1);
0092
0093   G4Material* carbon = new G4Material("carbon", 1.0 * g / cm3, 1);
0094   carbon->AddElement(C, 1);
0095
0096   G4Material* plastic = new G4Material("plastic", 1.0 * g / cm3, 2);
0097   plastic->AddElement(H, 1);
0098   plastic->AddElement(C, 1);
0099
0100   // or use G4-NIST materials data base
0101   //
0102   G4NistManager* man = G4NistManager::Instance();
0103   man->FindOrBuildMaterial("G4_B");
0104
0105   G4Element* O = man->FindOrBuildElement("O");
0106   G4Element* Hf = man->FindOrBuildElement("Hf");
0107
0108   G4Material* HfO2 = new G4Material("HfO2", 9.68 * g / cm3, 2);
0109   HfO2->AddElement(Hf, 1);
0110   HfO2->AddElement(O, 2);
0111
0112   /// G4cout << *(G4Material::GetMaterialTable()) << G4endl;
0113 }
0114
0115 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0116
0117 G4Material* DetectorConstruction::MaterialWithSingleIsotope(G4String name, G4String symbol,
0118                                                             G4double density, G4int Z, G4int A)
0119 {
0120   // define a material from an isotope
0121   //
0122   G4int ncomponents;
0123   G4double abundance, massfraction;
0124
0125   G4Isotope* isotope = new G4Isotope(symbol, Z, A);
0126
0127   G4Element* element = new G4Element(name, symbol, ncomponents = 1);
0128   element->AddIsotope(isotope, abundance = 100. * perCent);
0129
0130   G4Material* material = new G4Material(name, density, ncomponents = 1);
0131   material->AddElement(element, massfraction = 100. * perCent);
0132
0133   return material;
0134 }
0135
0136 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0137
0138 G4VPhysicalVolume* DetectorConstruction::ConstructVolumes()
0139 {
0140   // Cleanup old geometry
0141   G4GeometryManager::GetInstance()->OpenGeometry();
0142   G4PhysicalVolumeStore::GetInstance()->Clean();
0143   G4LogicalVolumeStore::GetInstance()->Clean();
0144   G4SolidStore::GetInstance()->Clean();
0145
0146   G4Box* sBox = new G4Box("Container",  // its name
0147                           fBoxSize / 2, fBoxSize / 2, fBoxSize / 2);  // its dimensions
0148
0149   fLBox = new G4LogicalVolume(sBox,  // its shape
0150                               fMaterial,  // its material
0151                               fMaterial->GetName());  // its name
0152
0153   fPBox = new G4PVPlacement(0,  // no rotation
0154                             G4ThreeVector(),  // at (0,0,0)
0155                             fLBox,  // its logical volume
0156                             fMaterial->GetName(),  // its name
0157                             0,  // its mother  volume
0158                             false,  // no boolean operation
0159                             0);  // copy number
0160
0161   PrintParameters();
0162
0163   // always return the root volume
0164   //
0165   return fPBox;
0166 }
0167
0168 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0169
0170 void DetectorConstruction::PrintParameters()
0171 {
0172   G4cout << "\n The Box is " << G4BestUnit(fBoxSize, "Length") << " of " << fMaterial->GetName()
0173          << "\n \n"
0174          << fMaterial << G4endl;
0175 }
0176
0177 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0178
0179 void DetectorConstruction::SetMaterial(G4String materialChoice)
0180 {
0181   // search the material by its name
0182   G4Material* pttoMaterial = G4NistManager::Instance()->FindOrBuildMaterial(materialChoice);
0183
0184   if (pttoMaterial) {
0185     if (fMaterial != pttoMaterial) {
0186       fMaterial = pttoMaterial;
0187       if (fLBox) {
0188         fLBox->SetMaterial(pttoMaterial);
0189       }
0190       G4RunManager::GetRunManager()->PhysicsHasBeenModified();
0191     }
0192   }
0193   else {
0194     G4cout << "\n--> warning from DetectorConstruction::SetMaterial : " << materialChoice
0195            << " not found" << G4endl;
0196   }
0197 }
0198
0199 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0200
0201 void DetectorConstruction::SetSize(G4double value)
0202 {
0203   fBoxSize = value;
0204   G4RunManager::GetRunManager()->ReinitializeGeometry();
0205 }
0206
0207 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......