TestEm2/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 #include "G4AutoDelete.hh"
0033 #include "G4GlobalMagFieldMessenger.hh"
0034 #include "G4LogicalVolume.hh"
0035 #include "G4LogicalVolumeStore.hh"
0036 #include "G4NistManager.hh"
0037 #include "G4PVPlacement.hh"
0038 #include "G4PhysicalVolumeStore.hh"
0039 #include "G4RunManager.hh"
0040 #include "G4SolidStore.hh"
0041 #include "G4SystemOfUnits.hh"
0042 #include "G4Tubs.hh"
0043 #include "G4UnitsTable.hh"
0044
0045 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0046
0047 G4ThreadLocal
0048 G4GlobalMagFieldMessenger* DetectorConstruction::fMagFieldMessenger = nullptr;
0049
0050 DetectorConstruction::DetectorConstruction()
0051 {
0052   DefineMaterials();
0053   SetMaterial("G4_PbWO4");
0054   fDetectorMessenger = new DetectorMessenger(this);
0055 }
0056
0057 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0058
0059 DetectorConstruction::~DetectorConstruction()
0060 {
0061   delete fDetectorMessenger;
0062 }
0063
0064 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0065
0066 void DetectorConstruction::DefineMaterials()
0067 {
0068   //
0069   // define few Elements by hand
0070   //
0071   G4double a, z;
0072
0073   G4Element* H = new G4Element("Hydrogen", "H", z = 1., a = 1.01 * g / mole);
0074   G4Element* O = new G4Element("Oxygen", "O", z = 8., a = 16.00 * g / mole);
0075   G4Element* Ge = new G4Element("Germanium", "Ge", z = 32., a = 72.59 * g / mole);
0076   G4Element* Bi = new G4Element("Bismuth", "Bi", z = 83., a = 208.98 * g / mole);
0077
0078   //
0079   // define materials
0080   //
0081   G4double density;
0082   G4int ncomponents, natoms;
0083
0084   // water with ionisation potential 78 eV
0085   G4Material* H2O = new G4Material("Water", density = 1.00 * g / cm3, ncomponents = 2);
0086   H2O->AddElement(H, natoms = 2);
0087   H2O->AddElement(O, natoms = 1);
0088   H2O->GetIonisation()->SetMeanExcitationEnergy(78.0 * eV);
0089
0090   // pure materails
0091   new G4Material("liquidArgon", z = 18., a = 39.95 * g / mole, density = 1.390 * g / cm3);
0092   new G4Material("Aluminium", z = 13., a = 26.98 * g / mole, density = 2.7 * g / cm3);
0093   new G4Material("Iron", z = 26., a = 55.85 * g / mole, density = 7.87 * g / cm3);
0094   new G4Material("Copper", z = 29., a = 63.55 * g / mole, density = 8.960 * g / cm3);
0095   new G4Material("Tungsten", z = 74., a = 183.84 * g / mole, density = 19.35 * g / cm3);
0096   new G4Material("Lead", z = 82., a = 207.19 * g / mole, density = 11.35 * g / cm3);
0097   new G4Material("Uranium", z = 92., a = 238.03 * g / mole, density = 18.95 * g / cm3);
0098
0099   // compound material
0100   G4Material* BGO = new G4Material("BGO", density = 7.10 * g / cm3, ncomponents = 3);
0101   BGO->AddElement(O, natoms = 12);
0102   BGO->AddElement(Ge, natoms = 3);
0103   BGO->AddElement(Bi, natoms = 4);
0104
0105   ////G4cout << *(G4Material::GetMaterialTable()) << G4endl;
0106 }
0107
0108 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0109
0110 void DetectorConstruction::UpdateParameters()
0111 {
0112   G4double Radl = fMaterial->GetRadlen();
0113   fDLlength = fDLradl * Radl;
0114   fDRlength = fDRradl * Radl;
0115   fEcalLength = fNLtot * fDLlength;
0116   fEcalRadius = fNRtot * fDRlength;
0117   if (nullptr != fSolidEcal) {
0118     fSolidEcal->SetOuterRadius(fEcalRadius);
0119     fSolidEcal->SetZHalfLength(0.5 * fEcalLength);
0120   }
0121 }
0122
0123 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0124
0125 G4VPhysicalVolume* DetectorConstruction::Construct()
0126 {
0127   UpdateParameters();
0128   //
0129   // Ecal
0130   //
0131   if (nullptr == fPhysiEcal) {
0132     fSolidEcal = new G4Tubs("Ecal", 0., fEcalRadius, 0.5 * fEcalLength, 0., 360 * deg);
0133     fLogicEcal = new G4LogicalVolume(fSolidEcal, fMaterial, "Ecal", 0, 0, 0);
0134     fPhysiEcal = new G4PVPlacement(0, G4ThreeVector(), fLogicEcal, "Ecal", 0, false, 0);
0135   }
0136   G4cout << "\n Absorber is " << G4BestUnit(fEcalLength, "Length") << " of " << fMaterial->GetName()
0137          << "  R= " << fEcalRadius / cm << " cm \n"
0138          << G4endl;
0139   G4cout << fMaterial << G4endl;
0140   //
0141   // always return the physical World
0142   //
0143   return fPhysiEcal;
0144 }
0145
0146 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0147
0148 void DetectorConstruction::SetMaterial(const G4String& materialChoice)
0149 {
0150   // search the material by its name
0151   G4Material* pttoMaterial = G4NistManager::Instance()->FindOrBuildMaterial(materialChoice);
0152
0153   if (pttoMaterial && fMaterial != pttoMaterial) {
0154     fMaterial = pttoMaterial;
0155     if (nullptr != fLogicEcal) {
0156       fLogicEcal->SetMaterial(fMaterial);
0157     }
0158     G4RunManager::GetRunManager()->PhysicsHasBeenModified();
0159   }
0160 }
0161
0162 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0163
0164 void DetectorConstruction::SetLBining(const G4ThreeVector& Value)
0165 {
0166   fNLtot = (G4int)Value(0);
0167   if (fNLtot > kMaxBin) {
0168     G4cout << "\n ---> warning from SetLBining: " << fNLtot << " truncated to " << kMaxBin
0169            << G4endl;
0170     fNLtot = kMaxBin;
0171   }
0172   fDLradl = Value(1);
0173   UpdateParameters();
0174 }
0175
0176 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0177
0178 void DetectorConstruction::SetRBining(const G4ThreeVector& Value)
0179 {
0180   fNRtot = (G4int)Value(0);
0181   if (fNRtot > kMaxBin) {
0182     G4cout << "\n ---> warning from SetRBining: " << fNRtot << " truncated to " << kMaxBin
0183            << G4endl;
0184     fNRtot = kMaxBin;
0185   }
0186   fDRradl = Value(1);
0187   UpdateParameters();
0188 }
0189
0190 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0191
0192 void DetectorConstruction::ConstructSDandField()
0193 {
0194   // Create global magnetic field
0195   // Create global magnetic field messenger.
0196   // Uniform magnetic field is then created automatically if
0197   // the field value is not zero.
0198   G4ThreeVector fieldValue = G4ThreeVector();
0199   fMagFieldMessenger = new G4GlobalMagFieldMessenger(fieldValue);
0200   fMagFieldMessenger->SetVerboseLevel(1);
0201
0202   // Register the field messenger for deleting
0203   G4AutoDelete::Register(fMagFieldMessenger);
0204 }
0205
0206 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......