range/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   man->FindOrBuildMaterial("G4_WATER");
0095 }
0096
0097 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0098
0099 G4VPhysicalVolume* DetectorConstruction::ConstructVolumes()
0100 {
0101   G4GeometryManager::GetInstance()->OpenGeometry();
0102   G4PhysicalVolumeStore::GetInstance()->Clean();
0103   G4LogicalVolumeStore::GetInstance()->Clean();
0104   G4SolidStore::GetInstance()->Clean();
0105
0106   // Spherical absorber
0107   G4Sphere* sAbsor = new G4Sphere("Absorber",  // name
0108                                   0., fAbsorRadius, 0., twopi, 0., pi);  // size
0109
0110   fLogicalAbsor = new G4LogicalVolume(sAbsor,  // solid
0111                                       fAbsorMaterial,  // material
0112                                       "Absorber");  // name
0113
0114   fAbsor = new G4PVPlacement(0,  // no rotation
0115                              G4ThreeVector(),  // at (0,0,0)
0116                              fLogicalAbsor,  // logical volume
0117                              "Absorber",  // name
0118                              0,  // mother volume
0119                              false,  // no boolean operation
0120                              0);  // copy number
0121
0122   PrintParameters();
0123
0124   fLogicalAbsor->SetUserLimits(new G4UserLimits(DBL_MAX, DBL_MAX, DBL_MAX, fTrackingCut));
0125
0126   // Always return the root volume
0127   return fAbsor;
0128 }
0129
0130 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0131
0132 void DetectorConstruction::PrintParameters() const
0133 {
0134   G4cout << "\n---------------------------------------------------------\n";
0135   G4cout << "---> The tracking cut to all particles is set to "
0136          << G4BestUnit(fTrackingCut, "Energy") << G4endl;
0137   G4cout << "---> The Absorber is a sphere of " << G4BestUnit(fAbsorRadius, "Length")
0138          << " radius of " << fAbsorMaterial->GetName() << " made of"
0139          << "\n \n"
0140          << fAbsorMaterial << G4endl;
0141   G4cout << "\n---------------------------------------------------------\n";
0142 }
0143
0144 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0145
0146 void DetectorConstruction::SetTrackingCut(G4double value)
0147 {
0148   fTrackingCut = value;
0149   G4RunManager::GetRunManager()->ReinitializeGeometry();
0150 }
0151
0152 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0153
0154 void DetectorConstruction::SetRadius(G4double value)
0155 {
0156   fAbsorRadius = value;
0157   G4RunManager::GetRunManager()->ReinitializeGeometry();
0158 }
0159
0160 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0161
0162 void DetectorConstruction::SetMaterial(G4String materialChoice)
0163 {
0164   G4NistManager::Instance()->FindOrBuildMaterial(materialChoice);
0165   // Search the material by its name
0166   G4Material* pttoMaterial = G4Material::GetMaterial(materialChoice);
0167   if (pttoMaterial) fAbsorMaterial = pttoMaterial;
0168   G4RunManager::GetRunManager()->PhysicsHasBeenModified();
0169 }