TestEm1/src/DetectorConstruction.cc

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0026 /// \file electromagnetic/TestEm1/src/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 "G4AutoDelete.hh"
0039 #include "G4Box.hh"
0040 #include "G4GeometryManager.hh"
0041 #include "G4GlobalMagFieldMessenger.hh"
0042 #include "G4LogicalVolume.hh"
0043 #include "G4LogicalVolumeStore.hh"
0044 #include "G4Material.hh"
0045 #include "G4NistManager.hh"
0046 #include "G4PVPlacement.hh"
0047 #include "G4PhysicalConstants.hh"
0048 #include "G4PhysicalVolumeStore.hh"
0049 #include "G4RunManager.hh"
0050 #include "G4SolidStore.hh"
0051 #include "G4SystemOfUnits.hh"
0052 #include "G4UnitsTable.hh"
0053
0054 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0055
0056 DetectorConstruction::DetectorConstruction()
0057 {
0058   fBoxSize = 10 * m;
0059   DefineMaterials();
0060   SetMaterial("G4_Al");
0061   fDetectorMessenger = new DetectorMessenger(this);
0062 }
0063
0064 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0065
0066 DetectorConstruction::~DetectorConstruction()
0067 {
0068   delete fDetectorMessenger;
0069 }
0070
0071 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0072
0073 void DetectorConstruction::DefineMaterials()
0074 {
0075   //
0076   // define Elements
0077   //
0078   G4double z, a;
0079
0080   G4Element* H = new G4Element("Hydrogen", "H", z = 1., a = 1.01 * g / mole);
0081   G4Element* C = new G4Element("Hydrogen", "C", z = 6., a = 12.00 * 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* Ge = new G4Element("Germanium", "Ge", z = 32., a = 72.59 * g / mole);
0085   G4Element* Bi = new G4Element("Bismuth", "Bi", z = 83., a = 208.98 * g / mole);
0086
0087   //
0088   // define materials
0089   //
0090   G4double density;
0091   G4int ncomponents, natoms;
0092   G4double fractionmass;
0093
0094   G4Material* Air = new G4Material("Air", density = 1.290 * mg / cm3, ncomponents = 2);
0095   Air->AddElement(N, fractionmass = 70. * perCent);
0096   Air->AddElement(O, fractionmass = 30. * perCent);
0097
0098   G4Material* H2l = new G4Material("H2liquid", density = 70.8 * mg / cm3, ncomponents = 1);
0099   H2l->AddElement(H, fractionmass = 1.);
0100
0101   G4Material* H2O = new G4Material("Water", density = 1.000 * g / cm3, ncomponents = 2);
0102   H2O->AddElement(H, natoms = 2);
0103   H2O->AddElement(O, natoms = 1);
0104   /// H2O->SetChemicalFormula("H_2O");
0105   H2O->GetIonisation()->SetMeanExcitationEnergy(78.0 * eV);
0106
0107   density = 0.001 * mg / cm3;
0108   G4Material* CO2 = new G4Material("CO2", density, ncomponents = 2);
0109   CO2->AddElement(C, natoms = 1);
0110   CO2->AddElement(O, natoms = 2);
0111
0112   G4Isotope* d = new G4Isotope("d", 1, 2, 0.0, 0);
0113   G4Element* D = new G4Element("Heavy-Hydrogen", "D", ncomponents = 1);
0114   D->AddIsotope(d, 1.0);
0115   G4Material* D2 = new G4Material("D2_gas", density = 0.036 * mg / cm3, ncomponents = 1);
0116   D2->AddElement(D, natoms = 2);
0117
0118   new G4Material("liquidArgon", z = 18., a = 39.95 * g / mole, density = 1.390 * g / cm3);
0119
0120   new G4Material("Aluminium", z = 13., a = 26.98 * g / mole, density = 2.700 * g / cm3);
0121
0122   new G4Material("Silicon", z = 14., a = 28.09 * g / mole, density = 2.330 * g / cm3);
0123
0124   new G4Material("Chromium", z = 24., a = 51.99 * g / mole, density = 7.140 * g / cm3);
0125
0126   new G4Material("Germanium", z = 32., a = 72.61 * g / mole, density = 5.323 * g / cm3);
0127
0128   G4Material* BGO = new G4Material("BGO", density = 7.10 * g / cm3, ncomponents = 3);
0129   BGO->AddElement(O, natoms = 12);
0130   BGO->AddElement(Ge, natoms = 3);
0131   BGO->AddElement(Bi, natoms = 4);
0132
0133   new G4Material("Iron", z = 26., a = 55.85 * g / mole, density = 7.870 * g / cm3);
0134
0135   new G4Material("Tungsten", z = 74., a = 183.85 * g / mole, density = 19.30 * g / cm3);
0136
0137   new G4Material("Gold", z = 79., a = 196.97 * g / mole, density = 19.32 * g / cm3);
0138
0139   new G4Material("Lead", z = 82., a = 207.19 * g / mole, density = 11.35 * g / cm3);
0140
0141   new G4Material("Uranium", z = 92., a = 238.03 * g / mole, density = 18.95 * g / cm3);
0142
0143   G4Material* argonGas =
0144     new G4Material("ArgonGas", z = 18, a = 39.948 * g / mole, density = 1.782 * mg / cm3, kStateGas,
0145                    273.15 * kelvin, 1 * atmosphere);
0146
0147   G4Material* butane = new G4Material("Isobutane", density = 2.42 * mg / cm3, ncomponents = 2,
0148                                       kStateGas, 273.15 * kelvin, 1 * atmosphere);
0149   butane->AddElement(C, natoms = 4);
0150   butane->AddElement(H, natoms = 10);
0151
0152   G4Material* ArButane = new G4Material("ArgonButane", density = 1.835 * mg / cm3, ncomponents = 2,
0153                                         kStateGas, 273.15 * kelvin, 1. * atmosphere);
0154   ArButane->AddMaterial(argonGas, fractionmass = 70 * perCent);
0155   ArButane->AddMaterial(butane, fractionmass = 30 * perCent);
0156
0157   // example of vacuum
0158   //
0159   density = universe_mean_density;  // from PhysicalConstants.h
0160   new G4Material("Galactic", z = 1., a = 1.008 * g / mole, density, kStateGas, 2.73 * kelvin,
0161                  3.e-18 * pascal);
0162
0163   // use Nist
0164   //
0165   G4NistManager* man = G4NistManager::Instance();
0166
0167   G4bool isotopes = false;
0168   /// G4Element*  O = man->FindOrBuildElement("O" , isotopes);
0169   G4Element* Si = man->FindOrBuildElement("Si", isotopes);
0170   G4Element* Lu = man->FindOrBuildElement("Lu", isotopes);
0171
0172   G4Material* LSO = new G4Material("Lu2SiO5", 7.4 * g / cm3, 3);
0173   LSO->AddElement(Lu, 2);
0174   LSO->AddElement(Si, 1);
0175   LSO->AddElement(O, 5);
0176
0177   /// G4cout << *(G4Material::GetMaterialTable()) << G4endl;
0178 }
0179
0180 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0181
0182 G4VPhysicalVolume* DetectorConstruction::Construct()
0183 {
0184   if (fPBox) {
0185     return fPBox;
0186   }
0187   fBox = new G4Box("Container",  // its name
0188                    fBoxSize / 2, fBoxSize / 2, fBoxSize / 2);  // its dimensions
0189
0190   fLBox = new G4LogicalVolume(fBox,  // its shape
0191                               fMaterial,  // its material
0192                               fMaterial->GetName());  // its name
0193
0194   fPBox = new G4PVPlacement(0,  // no rotation
0195                             G4ThreeVector(),  // at (0,0,0)
0196                             fLBox,  // its logical volume
0197                             fMaterial->GetName(),  // its name
0198                             0,  // its mother  volume
0199                             false,  // no boolean operation
0200                             0);  // copy number
0201
0202   PrintParameters();
0203
0204   // always return the root volume
0205   //
0206   return fPBox;
0207 }
0208
0209 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0210
0211 void DetectorConstruction::PrintParameters()
0212 {
0213   G4cout << "\n The Box is " << G4BestUnit(fBoxSize, "Length") << " of " << fMaterial->GetName()
0214          << G4endl;
0215   G4cout << fMaterial << G4endl;
0216 }
0217
0218 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0219
0220 void DetectorConstruction::SetMaterial(const G4String& materialChoice)
0221 {
0222   // search the material by its name
0223   G4Material* pttoMaterial = G4NistManager::Instance()->FindOrBuildMaterial(materialChoice);
0224
0225   if (pttoMaterial) {
0226     fMaterial = pttoMaterial;
0227     if (fLBox) {
0228       fLBox->SetMaterial(fMaterial);
0229     }
0230   }
0231   else {
0232     G4cout << "\n--> warning from DetectorConstruction::SetMaterial : " << materialChoice
0233            << " not found" << G4endl;
0234   }
0235   G4RunManager::GetRunManager()->PhysicsHasBeenModified();
0236 }
0237
0238 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0239
0240 void DetectorConstruction::SetSize(G4double value)
0241 {
0242   fBoxSize = value;
0243   if (fBox) {
0244     fBox->SetXHalfLength(fBoxSize / 2);
0245     fBox->SetYHalfLength(fBoxSize / 2);
0246     fBox->SetZHalfLength(fBoxSize / 2);
0247   }
0248 }
0249
0250 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0251
0252 void DetectorConstruction::ConstructSDandField()
0253 {
0254   if (fFieldMessenger.Get() == 0) {
0255     // Create global magnetic field messenger.
0256     // Uniform magnetic field is then created automatically if
0257     // the field value is not zero.
0258     G4ThreeVector fieldValue = G4ThreeVector();
0259     G4GlobalMagFieldMessenger* msg = new G4GlobalMagFieldMessenger(fieldValue);
0260     // msg->SetVerboseLevel(1);
0261     G4AutoDelete::Register(msg);
0262     fFieldMessenger.Put(msg);
0263   }
0264 }
0265
0266 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......