mfp/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
0056 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0057
0058 DetectorConstruction::DetectorConstruction()
0059   : G4VUserDetectorConstruction(), fAbsorMaterial(0), fAbsor(0), fDetectorMessenger(0)
0060 {
0061   // Default parameter values
0062   fAbsorRadius = 1 * m;
0063
0064   DefineMaterials();
0065   SetMaterial("G4_WATER");
0066
0067   // Create commands for interactive definition of the detector
0068   fDetectorMessenger = new DetectorMessenger(this);
0069 }
0070
0071 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0072
0073 DetectorConstruction::~DetectorConstruction()
0074 {
0075   delete fDetectorMessenger;
0076 }
0077
0078 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0079
0080 G4VPhysicalVolume* DetectorConstruction::Construct()
0081 {
0082   return ConstructVolumes();
0083 }
0084
0085 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0086
0087 void DetectorConstruction::DefineMaterials()
0088 {
0089   G4NistManager* man = G4NistManager::Instance();
0090   man->FindOrBuildMaterial("G4_WATER");
0091 }
0092
0093 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0094
0095 G4VPhysicalVolume* DetectorConstruction::ConstructVolumes()
0096 {
0097   G4GeometryManager::GetInstance()->OpenGeometry();
0098   G4PhysicalVolumeStore::GetInstance()->Clean();
0099   G4LogicalVolumeStore::GetInstance()->Clean();
0100   G4SolidStore::GetInstance()->Clean();
0101
0102   // Spherical absorber
0103   G4Sphere* sAbsor = new G4Sphere("Absorber",  // name
0104                                   0., fAbsorRadius, 0., twopi, 0., pi);  // size
0105
0106   fLogicalAbsor = new G4LogicalVolume(sAbsor,  // solid
0107                                       fAbsorMaterial,  // material
0108                                       "Absorber");  // name
0109
0110   fAbsor = new G4PVPlacement(0,  // no rotation
0111                              G4ThreeVector(),  // at (0,0,0)
0112                              fLogicalAbsor,  // logical volume
0113                              "Absorber",  // name
0114                              0,  // mother volume
0115                              false,  // no boolean operation
0116                              0);  // copy number
0117
0118   PrintParameters();
0119
0120   return fAbsor;
0121 }
0122
0123 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0124
0125 void DetectorConstruction::PrintParameters() const
0126 {
0127   G4cout << "\n---------------------------------------------------------\n";
0128   G4cout << "---> The Absorber is a sphere of " << G4BestUnit(fAbsorRadius, "Length")
0129          << " radius of " << fAbsorMaterial->GetName() << " made of"
0130          << "\n \n"
0131          << fAbsorMaterial << G4endl;
0132   G4cout << "\n---------------------------------------------------------\n";
0133 }
0134
0135 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0136
0137 void DetectorConstruction::SetRadius(G4double value)
0138 {
0139   fAbsorRadius = value;
0140   G4RunManager::GetRunManager()->ReinitializeGeometry();
0141 }
0142
0143 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0144
0145 void DetectorConstruction::SetMaterial(G4String materialChoice)
0146 {
0147   // Search the material by its name
0148   G4Material* pttoMaterial = G4Material::GetMaterial(materialChoice);
0149   if (pttoMaterial) fAbsorMaterial = pttoMaterial;
0150   G4RunManager::GetRunManager()->PhysicsHasBeenModified();
0151 }