wvalue/src/DetectorConstruction.cc

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0025 //
0026 /// \file DetectorConstruction.cc
0027 /// \brief Implementation of the DetectorConstruction class
0028
0029 // This example is provided by the Geant4-DNA collaboration
0030 // Any report or published results obtained using the Geant4-DNA software
0031 // shall cite the following Geant4-DNA collaboration publications:
0032 // Med. Phys. 45 (2018) e722-e739
0033 // Phys. Med. 31 (2015) 861-874
0034 // Med. Phys. 37 (2010) 4692-4708
0035 // Int. J. Model. Simul. Sci. Comput. 1 (2010) 157–178
0036 //
0037 // The Geant4-DNA web site is available at http://geant4-dna.org
0038 //
0039
0040 #include "DetectorConstruction.hh"
0041
0042 #include "DetectorMessenger.hh"
0043
0044 #include "G4GeometryManager.hh"
0045 #include "G4LogicalVolumeStore.hh"
0046 #include "G4NistManager.hh"
0047 #include "G4PVPlacement.hh"
0048 #include "G4PhysicalConstants.hh"
0049 #include "G4PhysicalVolumeStore.hh"
0050 #include "G4RunManager.hh"
0051 #include "G4SolidStore.hh"
0052 #include "G4Sphere.hh"
0053 #include "G4SystemOfUnits.hh"
0054 #include "G4UnitsTable.hh"
0055 #include "G4UserLimits.hh"
0056
0057 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0058
0059 DetectorConstruction::DetectorConstruction()
0060   : G4VUserDetectorConstruction(), fAbsorMaterial(0), fAbsor(0), fDetectorMessenger(0)
0061 {
0062   // Default tracking cut
0063   fTrackingCut = 7.4 * eV;
0064
0065   // Default parameter values
0066   fAbsorRadius = 1 * m;
0067
0068   DefineMaterials();
0069   SetMaterial("G4_WATER");
0070
0071   // Create commands for interactive definition of the detector
0072   fDetectorMessenger = new DetectorMessenger(this);
0073 }
0074
0075 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0076
0077 DetectorConstruction::~DetectorConstruction()
0078 {
0079   delete fDetectorMessenger;
0080 }
0081
0082 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0083
0084 G4VPhysicalVolume* DetectorConstruction::Construct()
0085 {
0086   return ConstructVolumes();
0087 }
0088
0089 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0090
0091 void DetectorConstruction::DefineMaterials()
0092 {
0093   G4NistManager* man = G4NistManager::Instance();
0094
0095   man->FindOrBuildMaterial("G4_WATER");
0096 }
0097
0098 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0099
0100 G4VPhysicalVolume* DetectorConstruction::ConstructVolumes()
0101 {
0102   G4GeometryManager::GetInstance()->OpenGeometry();
0103   G4PhysicalVolumeStore::GetInstance()->Clean();
0104   G4LogicalVolumeStore::GetInstance()->Clean();
0105   G4SolidStore::GetInstance()->Clean();
0106
0107   // Spherical absorber
0108
0109   G4Sphere* sAbsor = new G4Sphere("Absorber",  // name
0110                                   0., fAbsorRadius, 0., twopi, 0., pi);  // size
0111
0112   fLogicalAbsor = new G4LogicalVolume(sAbsor,  // solid
0113                                       fAbsorMaterial,  // material
0114                                       "Absorber");  // name
0115
0116   fAbsor = new G4PVPlacement(0,  // no rotation
0117                              G4ThreeVector(),  // at (0,0,0)
0118                              fLogicalAbsor,  // logical volume
0119                              "Absorber",  // name
0120                              0,  // mother  volume
0121                              false,  // no boolean operation
0122                              0);  // copy number
0123
0124   PrintParameters();
0125
0126   fLogicalAbsor->SetUserLimits(new G4UserLimits(DBL_MAX, DBL_MAX, DBL_MAX, fTrackingCut));
0127
0128   // Always return the root volume
0129
0130   return fAbsor;
0131 }
0132
0133 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0134
0135 void DetectorConstruction::PrintParameters() const
0136 {
0137   G4cout << "\n---------------------------------------------------------\n";
0138   G4cout << "---> The tracking cut is set to " << G4BestUnit(fTrackingCut, "Energy") << G4endl;
0139   G4cout << "---> The Absorber is a sphere of " << G4BestUnit(fAbsorRadius, "Length")
0140          << " radius of " << fAbsorMaterial->GetName() << " made of"
0141          << "\n \n"
0142          << fAbsorMaterial << G4endl;
0143   G4cout << "\n---------------------------------------------------------\n";
0144 }
0145
0146 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0147
0148 void DetectorConstruction::SetTrackingCut(G4double value)
0149 {
0150   fTrackingCut = value;
0151   G4RunManager::GetRunManager()->ReinitializeGeometry();
0152 }
0153
0154 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0155
0156 void DetectorConstruction::SetRadius(G4double value)
0157 {
0158   fAbsorRadius = value;
0159   G4RunManager::GetRunManager()->ReinitializeGeometry();
0160 }
0161
0162 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0163
0164 void DetectorConstruction::SetMaterial(G4String materialChoice)
0165 {
0166   // search the material by its name
0167   G4Material* pttoMaterial = G4Material::GetMaterial(materialChoice);
0168   if (pttoMaterial) fAbsorMaterial = pttoMaterial;
0169   G4RunManager::GetRunManager()->PhysicsHasBeenModified();
0170 }