TestEm18/src/DetectorConstruction.cc

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0026 /// \file electromagnetic/TestEm18/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 "G4PhysicalVolumeStore.hh"
0045 #include "G4SolidStore.hh"
0046 #include "G4SystemOfUnits.hh"
0047 #include "G4UnitsTable.hh"
0048
0049 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0050
0051 DetectorConstruction::DetectorConstruction()
0052 {
0053   fBoxSize = 1 * cm;
0054   DefineMaterials();
0055   SetMaterial("Water");
0056   fDetectorMessenger = new DetectorMessenger(this);
0057 }
0058
0059 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0060
0061 DetectorConstruction::~DetectorConstruction()
0062 {
0063   delete fDetectorMessenger;
0064 }
0065
0066 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0067
0068 G4VPhysicalVolume* DetectorConstruction::Construct()
0069 {
0070   return ConstructVolumes();
0071 }
0072
0073 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0074
0075 void DetectorConstruction::DefineMaterials()
0076 {
0077   //
0078   // define Elements
0079   //
0080   G4double z, a;
0081
0082   G4Element* H = new G4Element("Hydrogen", "H", z = 1., a = 1.01 * g / mole);
0083   G4Element* N = new G4Element("Nitrogen", "N", z = 7., a = 14.01 * g / mole);
0084   G4Element* O = new G4Element("Oxygen", "O", z = 8., a = 16.00 * g / mole);
0085
0086   //
0087   // define materials
0088   //
0089   G4double density;
0090   G4int ncomponents, natoms;
0091   G4double fractionmass;
0092
0093   G4Material* Air = new G4Material("Air", density = 1.290 * mg / cm3, ncomponents = 2);
0094   Air->AddElement(N, fractionmass = 70. * perCent);
0095   Air->AddElement(O, fractionmass = 30. * perCent);
0096
0097   G4Material* H2O = new G4Material("Water", density = 1.000 * g / cm3, ncomponents = 2);
0098   H2O->AddElement(H, natoms = 2);
0099   H2O->AddElement(O, natoms = 1);
0100   H2O->GetIonisation()->SetMeanExcitationEnergy(78.0 * eV);
0101
0102   G4Material* vapor = new G4Material("Water_vapor", density = 1.000 * mg / cm3, ncomponents = 2);
0103   vapor->AddElement(H, natoms = 2);
0104   vapor->AddElement(O, natoms = 1);
0105   vapor->GetIonisation()->SetMeanExcitationEnergy(78.0 * eV);
0106
0107   new G4Material("Carbon", z = 6., a = 12.01 * g / mole, density = 2.267 * g / cm3);
0108   new G4Material("Aluminium", z = 13., a = 26.98 * g / mole, density = 2.700 * g / cm3);
0109   new G4Material("Silicon", z = 14., a = 28.09 * g / mole, density = 2.330 * g / cm3);
0110   new G4Material("liquidArgon", z = 18., a = 39.95 * g / mole, density = 1.390 * g / cm3);
0111   new G4Material("Iron", z = 26., a = 55.85 * g / mole, density = 7.870 * g / cm3);
0112   new G4Material("Germanium", z = 32., a = 72.61 * g / mole, density = 5.323 * g / cm3);
0113   new G4Material("Tungsten", z = 74., a = 183.85 * g / mole, density = 19.30 * g / cm3);
0114   new G4Material("Lead", z = 82., a = 207.19 * g / mole, density = 11.35 * g / cm3);
0115
0116   new G4Material("ArgonGas", z = 18., a = 39.948 * g / mole, density = 1.782 * mg / cm3, kStateGas,
0117                  273.15 * kelvin, 1 * atmosphere);
0118
0119   ////G4cout << *(G4Material::GetMaterialTable()) << G4endl;
0120 }
0121
0122 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0123
0124 G4VPhysicalVolume* DetectorConstruction::ConstructVolumes()
0125 {
0126   // Cleanup old geometry
0127   G4GeometryManager::GetInstance()->OpenGeometry();
0128   G4PhysicalVolumeStore::GetInstance()->Clean();
0129   G4LogicalVolumeStore::GetInstance()->Clean();
0130   G4SolidStore::GetInstance()->Clean();
0131
0132   G4Box* sBox = new G4Box("Container",  // its name
0133                           fBoxSize / 2, fBoxSize / 2, fBoxSize / 2);  // its dimensions
0134
0135   fLBox = new G4LogicalVolume(sBox,  // its shape
0136                               fMaterial,  // its material
0137                               fMaterial->GetName());  // its name
0138
0139   fPBox = new G4PVPlacement(0,  // no rotation
0140                             G4ThreeVector(),  // at (0,0,0)
0141                             fLBox,  // its logical volume
0142                             fMaterial->GetName(),  // its name
0143                             0,  // its mother  volume
0144                             false,  // no boolean operation
0145                             0);  // copy number
0146
0147   PrintParameters();
0148
0149   // always return the root volume
0150   //
0151   return fPBox;
0152 }
0153
0154 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0155
0156 void DetectorConstruction::PrintParameters()
0157 {
0158   G4cout << "\n The Box is " << G4BestUnit(fBoxSize, "Length") << " of " << fMaterial->GetName()
0159          << "\n " << fMaterial << G4endl;
0160 }
0161
0162 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0163
0164 void DetectorConstruction::SetMaterial(const G4String& name)
0165 {
0166   // search the material by its name
0167   G4Material* mat = G4Material::GetMaterial(name, false);
0168
0169   // create the material by its name
0170   if (!mat) {
0171     mat = G4NistManager::Instance()->FindOrBuildMaterial(name);
0172   }
0173
0174   if (mat && mat != fMaterial) {
0175     G4cout << "### New material " << mat->GetName() << G4endl;
0176     fMaterial = mat;
0177     UpdateGeometry();
0178   }
0179
0180   if (!mat) {
0181     G4cout << "\n--> warning from DetectorConstruction::SetMaterial : " << name << " not found"
0182            << G4endl;
0183   }
0184 }
0185
0186 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0187
0188 void DetectorConstruction::SetSize(G4double value)
0189 {
0190   fBoxSize = value;
0191   UpdateGeometry();
0192 }
0193
0194 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0195
0196 #include "G4RunManager.hh"
0197
0198 void DetectorConstruction::UpdateGeometry()
0199 {
0200   G4RunManager::GetRunManager()->GeometryHasBeenModified();
0201 }
0202
0203 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......