slowing/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 "G4NistManager.hh"
0045 #include "G4RunManager.hh"
0046 #include "G4SystemOfUnits.hh"
0047 #include "G4UnitsTable.hh"
0048 #include "G4UserLimits.hh"
0049
0050 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
0051
0052 DetectorConstruction::DetectorConstruction() : G4VUserDetectorConstruction(), fWaterMaterial(0)
0053 {
0054   // Create commands for interactive definition of the detector
0055   fDetectorMessenger = new DetectorMessenger(this);
0056
0057   // Default tracking cut
0058   fTrackingCut = 7.4 * eV;
0059 }
0060
0061 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
0062
0063 DetectorConstruction::~DetectorConstruction()
0064 {
0065   delete fDetectorMessenger;
0066 }
0067
0068 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
0069
0070 G4VPhysicalVolume* DetectorConstruction::Construct()
0071 {
0072   DefineMaterials();
0073   return ConstructDetector();
0074 }
0075
0076 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
0077
0078 void DetectorConstruction::DefineMaterials()
0079 {
0080   // Water is defined from NIST material database
0081   G4NistManager* man = G4NistManager::Instance();
0082
0083   G4Material* H2O = man->FindOrBuildMaterial("G4_WATER");
0084
0085   fWaterMaterial = H2O;
0086
0087   G4cout << *(G4Material::GetMaterialTable()) << G4endl;
0088 }
0089
0090 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
0091
0092 G4VPhysicalVolume* DetectorConstruction::ConstructDetector()
0093 {
0094   // WORLD VOLUME
0095
0096   G4double worldSizeX = 1 * m;
0097   G4double worldSizeY = worldSizeX;
0098   G4double worldSizeZ = worldSizeX;
0099
0100   G4Box* solidWorld = new G4Box("World",  // its name
0101                                 worldSizeX / 2, worldSizeY / 2, worldSizeZ / 2);  // its size
0102
0103   fLogicWorld = new G4LogicalVolume(solidWorld,  // its solid
0104                                     fWaterMaterial,  // its material
0105                                     "World");  // its name
0106
0107   G4PVPlacement* physiWorld = new G4PVPlacement(0,  // no rotation
0108                                                 G4ThreeVector(),  // at (0,0,0)
0109                                                 fLogicWorld,
0110                                                 "World",  // its name
0111                                                 0,  // its mother  volume
0112                                                 false,  // no boolean operation
0113                                                 0);  // copy number
0114
0115   // Visualization attributes
0116   G4VisAttributes* worldVisAtt = new G4VisAttributes(G4Colour(1.0, 1.0, 1.0));
0117   worldVisAtt->SetVisibility(true);
0118   fLogicWorld->SetVisAttributes(worldVisAtt);
0119
0120   G4VisAttributes* worldVisAtt1 = new G4VisAttributes(G4Colour(1.0, 0.0, 0.0));
0121   worldVisAtt1->SetVisibility(true);
0122
0123   // Tracking cut
0124   fLogicWorld->SetUserLimits(new G4UserLimits(DBL_MAX, DBL_MAX, DBL_MAX, fTrackingCut));
0125
0126   PrintParameters();
0127
0128   return physiWorld;
0129 }
0130
0131 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0132
0133 void DetectorConstruction::SetMaterial(G4String materialChoice)
0134 {
0135   // Search the material by its name
0136   G4Material* pttoMaterial = G4Material::GetMaterial(materialChoice);
0137   if (pttoMaterial) fWaterMaterial = pttoMaterial;
0138   G4RunManager::GetRunManager()->PhysicsHasBeenModified();
0139 }
0140
0141 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0142
0143 void DetectorConstruction::SetTrackingCut(G4double value)
0144 {
0145   fTrackingCut = value;
0146   G4RunManager::GetRunManager()->ReinitializeGeometry();
0147 }
0148
0149 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0150
0151 void DetectorConstruction::PrintParameters() const
0152 {
0153   G4cout << "\n---------------------------------------------------------\n";
0154   G4cout << "---> The tracking cut is set to " << G4BestUnit(fTrackingCut, "Energy") << G4endl;
0155   G4cout << "\n---------------------------------------------------------\n";
0156 }