mfp/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 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
0055 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0056
0057 DetectorConstruction::DetectorConstruction()
0058   : G4VUserDetectorConstruction(), fAbsorMaterial(0), fAbsor(0), fDetectorMessenger(0)
0059 {
0060   // Default parameter values
0061   fAbsorRadius = 1 * m;
0062
0063   DefineMaterials();
0064   SetMaterial("G4_WATER");
0065
0066   // Create commands for interactive definition of the detector
0067   fDetectorMessenger = new DetectorMessenger(this);
0068 }
0069
0070 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0071
0072 DetectorConstruction::~DetectorConstruction()
0073 {
0074   delete fDetectorMessenger;
0075 }
0076
0077 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0078
0079 G4VPhysicalVolume* DetectorConstruction::Construct()
0080 {
0081   return ConstructVolumes();
0082 }
0083
0084 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0085
0086 void DetectorConstruction::DefineMaterials()
0087 {
0088   G4NistManager* man = G4NistManager::Instance();
0089   man->FindOrBuildMaterial("G4_WATER");
0090 }
0091
0092 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0093
0094 G4VPhysicalVolume* DetectorConstruction::ConstructVolumes()
0095 {
0096   G4GeometryManager::GetInstance()->OpenGeometry();
0097   G4PhysicalVolumeStore::GetInstance()->Clean();
0098   G4LogicalVolumeStore::GetInstance()->Clean();
0099   G4SolidStore::GetInstance()->Clean();
0100
0101   // Spherical absorber
0102   G4Sphere* sAbsor = new G4Sphere("Absorber",  // name
0103                                   0., fAbsorRadius, 0., twopi, 0., pi);  // size
0104
0105   fLogicalAbsor = new G4LogicalVolume(sAbsor,  // solid
0106                                       fAbsorMaterial,  // material
0107                                       "Absorber");  // name
0108
0109   fAbsor = new G4PVPlacement(0,  // no rotation
0110                              G4ThreeVector(),  // at (0,0,0)
0111                              fLogicalAbsor,  // logical volume
0112                              "Absorber",  // name
0113                              0,  // mother volume
0114                              false,  // no boolean operation
0115                              0);  // copy number
0116
0117   PrintParameters();
0118
0119   return fAbsor;
0120 }
0121
0122 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0123
0124 void DetectorConstruction::PrintParameters() const
0125 {
0126   G4cout << "\n---------------------------------------------------------\n";
0127   G4cout << "---> The Absorber is a sphere of " << G4BestUnit(fAbsorRadius, "Length")
0128          << " radius of " << fAbsorMaterial->GetName() << " made of"
0129          << "\n \n"
0130          << fAbsorMaterial << G4endl;
0131   G4cout << "\n---------------------------------------------------------\n";
0132 }
0133
0134 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0135
0136 void DetectorConstruction::SetRadius(G4double value)
0137 {
0138   fAbsorRadius = value;
0139   G4RunManager::GetRunManager()->ReinitializeGeometry();
0140 }
0141
0142 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0143
0144 void DetectorConstruction::SetMaterial(G4String materialChoice)
0145 {
0146   // Search the material by its name
0147   G4Material* pttoMaterial = G4Material::GetMaterial(materialChoice);
0148   if (pttoMaterial) fAbsorMaterial = pttoMaterial;
0149   G4RunManager::GetRunManager()->PhysicsHasBeenModified();
0150 }