TestEm17/src/DetectorConstruction.cc

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0025 //
0026 /// \file DetectorConstruction.cc
0027 /// \brief Implementation of the DetectorConstruction class
0028
0029 #include "DetectorConstruction.hh"
0030
0031 #include "DetectorMessenger.hh"
0032
0033 #include "G4Box.hh"
0034 #include "G4GeometryManager.hh"
0035 #include "G4LogicalVolume.hh"
0036 #include "G4LogicalVolumeStore.hh"
0037 #include "G4Material.hh"
0038 #include "G4NistManager.hh"
0039 #include "G4PVPlacement.hh"
0040 #include "G4PhysicalConstants.hh"
0041 #include "G4PhysicalVolumeStore.hh"
0042 #include "G4RunManager.hh"
0043 #include "G4SolidStore.hh"
0044 #include "G4SystemOfUnits.hh"
0045 #include "G4UnitsTable.hh"
0046
0047 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0048
0049 DetectorConstruction::DetectorConstruction()
0050   : G4VUserDetectorConstruction(), fPBox(0), fLBox(0), fMaterial(0), fDetectorMessenger(0)
0051 {
0052   fBoxSize = 1 * m;
0053   DefineMaterials();
0054   SetMaterial("G4_Fe");
0055   fDetectorMessenger = new DetectorMessenger(this);
0056 }
0057
0058 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0059
0060 DetectorConstruction::~DetectorConstruction()
0061 {
0062   delete fDetectorMessenger;
0063 }
0064
0065 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0066
0067 G4VPhysicalVolume* DetectorConstruction::Construct()
0068 {
0069   return ConstructVolumes();
0070 }
0071
0072 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0073
0074 void DetectorConstruction::DefineMaterials()
0075 {
0076   //
0077   // define Elements
0078   //
0079   G4double z, a;
0080
0081   G4Element* C = new G4Element("Carbon", "C", z = 6., a = 12.01 * g / mole);
0082   G4Element* N = new G4Element("Nitrogen", "N", z = 7., a = 14.01 * g / mole);
0083   G4Element* O = new G4Element("Oxygen", "O", z = 8., a = 16.00 * g / mole);
0084   G4Element* Ca = new G4Element("Calcium", "Ca", z = 20., a = 40.08 * g / mole);
0085   G4Element* H = new G4Element("Hydrogen", "H", z = 1., a = 1.01 * g / mole);
0086   G4Element* I = new G4Element("Iodine", "I", z = 53., a = 126.90 * g / mole);
0087
0088   //
0089   // define materials
0090   //
0091   G4double density;
0092   G4int ncomponents, natoms;
0093   G4double fractionmass;
0094
0095   new G4Material("galactic", z = 1., a = 1.01 * g / mole, universe_mean_density, kStateGas,
0096                  2.73 * kelvin, 3.e-18 * pascal);
0097
0098   G4Material* Air = new G4Material("Air", density = 1.290 * mg / cm3, ncomponents = 2);
0099   Air->AddElement(N, fractionmass = 70. * perCent);
0100   Air->AddElement(O, fractionmass = 30. * perCent);
0101
0102   G4Material* CaCO3 = new G4Material("CaCO3", density = 2.80 * g / cm3, ncomponents = 3);
0103   CaCO3->AddElement(Ca, natoms = 1);
0104   CaCO3->AddElement(C, natoms = 1);
0105   CaCO3->AddElement(O, natoms = 3);
0106
0107   new G4Material("Carbon", z = 6., a = 12.01 * g / mole, density = 2.265 * g / cm3);
0108   new G4Material("Iron", z = 26., a = 55.85 * g / mole, density = 7.870 * g / cm3);
0109   new G4Material("Tin", z = 50., a = 118.7 * g / mole, density = 7.310 * g / cm3);
0110
0111   G4Material* HI = new G4Material("HI", density = 2.8 * g / cm3, ncomponents = 2);  //-35oC
0112   HI->AddElement(H, natoms = 1);
0113   HI->AddElement(I, natoms = 1);
0114
0115   G4cout << *(G4Material::GetMaterialTable()) << G4endl;
0116 }
0117
0118 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0119
0120 G4VPhysicalVolume* DetectorConstruction::ConstructVolumes()
0121 {
0122   if (fPBox) {
0123     return fPBox;
0124   }
0125
0126   G4Box* sBox = new G4Box("Container",  // its name
0127                           fBoxSize / 2, fBoxSize / 2, fBoxSize / 2);  // its dimensions
0128
0129   fLBox = new G4LogicalVolume(sBox,  // its shape
0130                               fMaterial,  // its material
0131                               fMaterial->GetName());  // its name
0132
0133   fPBox = new G4PVPlacement(0,  // no rotation
0134                             G4ThreeVector(),  // at (0,0,0)
0135                             fLBox,  // its logical volume
0136                             fMaterial->GetName(),  // its name
0137                             0,  // its mother  volume
0138                             false,  // no boolean operation
0139                             0);  // copy number
0140
0141   PrintParameters();
0142
0143   // always return the root volume
0144   //
0145   return fPBox;
0146 }
0147
0148 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0149
0150 void DetectorConstruction::PrintParameters()
0151 {
0152   G4cout << "\n The Box is " << G4BestUnit(fBoxSize, "Length") << " of " << fMaterial->GetName()
0153          << G4endl;
0154 }
0155
0156 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0157
0158 void DetectorConstruction::SetMaterial(const G4String& materialChoice)
0159 {
0160   // search the material by its name
0161   G4Material* pttoMaterial = G4NistManager::Instance()->FindOrBuildMaterial(materialChoice);
0162
0163   if (pttoMaterial && fMaterial != pttoMaterial) {
0164     fMaterial = pttoMaterial;
0165     if (fLBox) {
0166       fLBox->SetMaterial(fMaterial);
0167     }
0168     G4RunManager::GetRunManager()->PhysicsHasBeenModified();
0169   }
0170 }
0171
0172 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0173
0174 void DetectorConstruction::SetSize(G4double value)
0175 {
0176   fBoxSize = value;
0177 }
0178
0179 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0180
0181 void DetectorConstruction::UpdateGeometry()
0182 {
0183   G4RunManager::GetRunManager()->DefineWorldVolume(ConstructVolumes());
0184 }
0185
0186 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......