range/src/DetectorConstruction.cc

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