TestEm18/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 "G4PhysicalVolumeStore.hh"
0041 #include "G4SolidStore.hh"
0042 #include "G4SystemOfUnits.hh"
0043 #include "G4UnitsTable.hh"
0044
0045 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0046
0047 DetectorConstruction::DetectorConstruction()
0048 {
0049   fBoxSize = 1 * cm;
0050   DefineMaterials();
0051   SetMaterial("Water");
0052   fDetectorMessenger = new DetectorMessenger(this);
0053 }
0054
0055 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0056
0057 DetectorConstruction::~DetectorConstruction()
0058 {
0059   delete fDetectorMessenger;
0060 }
0061
0062 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0063
0064 G4VPhysicalVolume* DetectorConstruction::Construct()
0065 {
0066   return ConstructVolumes();
0067 }
0068
0069 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0070
0071 void DetectorConstruction::DefineMaterials()
0072 {
0073   //
0074   // define Elements
0075   //
0076   G4double z, a;
0077
0078   G4Element* H = new G4Element("Hydrogen", "H", z = 1., a = 1.01 * g / mole);
0079   G4Element* N = new G4Element("Nitrogen", "N", z = 7., a = 14.01 * g / mole);
0080   G4Element* O = new G4Element("Oxygen", "O", z = 8., a = 16.00 * g / mole);
0081
0082   //
0083   // define materials
0084   //
0085   G4double density;
0086   G4int ncomponents, natoms;
0087   G4double fractionmass;
0088
0089   G4Material* Air = new G4Material("Air", density = 1.290 * mg / cm3, ncomponents = 2);
0090   Air->AddElement(N, fractionmass = 70. * perCent);
0091   Air->AddElement(O, fractionmass = 30. * perCent);
0092
0093   G4Material* H2O = new G4Material("Water", density = 1.000 * g / cm3, ncomponents = 2);
0094   H2O->AddElement(H, natoms = 2);
0095   H2O->AddElement(O, natoms = 1);
0096   H2O->GetIonisation()->SetMeanExcitationEnergy(78.0 * eV);
0097
0098   G4Material* vapor = new G4Material("Water_vapor", density = 1.000 * mg / cm3, ncomponents = 2);
0099   vapor->AddElement(H, natoms = 2);
0100   vapor->AddElement(O, natoms = 1);
0101   vapor->GetIonisation()->SetMeanExcitationEnergy(78.0 * eV);
0102
0103   new G4Material("Carbon", z = 6., a = 12.01 * g / mole, density = 2.267 * g / cm3);
0104   new G4Material("Aluminium", z = 13., a = 26.98 * g / mole, density = 2.700 * g / cm3);
0105   new G4Material("Silicon", z = 14., a = 28.09 * g / mole, density = 2.330 * g / cm3);
0106   new G4Material("liquidArgon", z = 18., a = 39.95 * g / mole, density = 1.390 * g / cm3);
0107   new G4Material("Iron", z = 26., a = 55.85 * g / mole, density = 7.870 * g / cm3);
0108   new G4Material("Germanium", z = 32., a = 72.61 * g / mole, density = 5.323 * g / cm3);
0109   new G4Material("Tungsten", z = 74., a = 183.85 * g / mole, density = 19.30 * g / cm3);
0110   new G4Material("Lead", z = 82., a = 207.19 * g / mole, density = 11.35 * g / cm3);
0111
0112   new G4Material("ArgonGas", z = 18., a = 39.948 * g / mole, density = 1.782 * mg / cm3, kStateGas,
0113                  273.15 * kelvin, 1 * atmosphere);
0114
0115   ////G4cout << *(G4Material::GetMaterialTable()) << G4endl;
0116 }
0117
0118 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0119
0120 G4VPhysicalVolume* DetectorConstruction::ConstructVolumes()
0121 {
0122   // Cleanup old geometry
0123   G4GeometryManager::GetInstance()->OpenGeometry();
0124   G4PhysicalVolumeStore::GetInstance()->Clean();
0125   G4LogicalVolumeStore::GetInstance()->Clean();
0126   G4SolidStore::GetInstance()->Clean();
0127
0128   G4Box* sBox = new G4Box("Container",  // its name
0129                           fBoxSize / 2, fBoxSize / 2, fBoxSize / 2);  // its dimensions
0130
0131   fLBox = new G4LogicalVolume(sBox,  // its shape
0132                               fMaterial,  // its material
0133                               fMaterial->GetName());  // its name
0134
0135   fPBox = new G4PVPlacement(0,  // no rotation
0136                             G4ThreeVector(),  // at (0,0,0)
0137                             fLBox,  // its logical volume
0138                             fMaterial->GetName(),  // its name
0139                             0,  // its mother  volume
0140                             false,  // no boolean operation
0141                             0);  // copy number
0142
0143   PrintParameters();
0144
0145   // always return the root volume
0146   //
0147   return fPBox;
0148 }
0149
0150 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0151
0152 void DetectorConstruction::PrintParameters()
0153 {
0154   G4cout << "\n The Box is " << G4BestUnit(fBoxSize, "Length") << " of " << fMaterial->GetName()
0155          << "\n " << fMaterial << G4endl;
0156 }
0157
0158 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0159
0160 void DetectorConstruction::SetMaterial(const G4String& name)
0161 {
0162   // search the material by its name
0163   G4Material* mat = G4Material::GetMaterial(name, false);
0164
0165   // create the material by its name
0166   if (!mat) {
0167     mat = G4NistManager::Instance()->FindOrBuildMaterial(name);
0168   }
0169
0170   if (mat && mat != fMaterial) {
0171     G4cout << "### New material " << mat->GetName() << G4endl;
0172     fMaterial = mat;
0173     UpdateGeometry();
0174   }
0175
0176   if (!mat) {
0177     G4cout << "\n--> warning from DetectorConstruction::SetMaterial : " << name << " not found"
0178            << G4endl;
0179   }
0180 }
0181
0182 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0183
0184 void DetectorConstruction::SetSize(G4double value)
0185 {
0186   fBoxSize = value;
0187   UpdateGeometry();
0188 }
0189
0190 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0191
0192 #include "G4RunManager.hh"
0193
0194 void DetectorConstruction::UpdateGeometry()
0195 {
0196   G4RunManager::GetRunManager()->GeometryHasBeenModified();
0197 }
0198
0199 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......