chem2/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 publication:
0029 // Med. Phys. 37 (2010) 4692-4708
0030 // J. Comput. Phys. 274 (2014) 841-882
0031 // The Geant4-DNA web site is available at http://geant4-dna.org
0032 //
0033 //
0034 /// \file DetectorConstruction.cc
0035 /// \brief Implementation of the DetectorConstruction class
0036
0037 #include "DetectorConstruction.hh"
0038
0039 #include "G4Box.hh"
0040 #include "G4LogicalVolume.hh"
0041 #include "G4Material.hh"
0042 #include "G4NistManager.hh"
0043 #include "G4PVPlacement.hh"
0044 #include "G4ProductionCuts.hh"
0045 #include "G4SystemOfUnits.hh"
0046 #include "G4UserLimits.hh"
0047 #include "G4VPhysicalVolume.hh"
0048 #include "G4VisAttributes.hh"
0049
0050 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0051
0052 DetectorConstruction::DetectorConstruction() : G4VUserDetectorConstruction() {}
0053
0054 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0055
0056 DetectorConstruction::~DetectorConstruction() {}
0057
0058 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0059
0060 G4VPhysicalVolume* DetectorConstruction::Construct()
0061 {
0062   return ConstructDetector();
0063 }
0064
0065 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0066
0067 G4Material* DetectorConstruction::OtherMaterial(G4String materialName)
0068 {
0069   G4Material* material(0);
0070
0071   // Water is defined from NIST material database
0072   G4NistManager* man = G4NistManager::Instance();
0073   material = man->FindOrBuildMaterial(materialName);
0074   // If one wishes to test other density value for water material,
0075   // one should use instead:
0076   // G4Material * H2O = man->BuildMaterialWithNewDensity(
0077   // "G4_WATER_MODIFIED",
0078   // "G4_WATER",1000*g/cm/cm/cm);
0079   // Note: any string for "G4_WATER_MODIFIED" parameter is accepted
0080   // and "G4_WATER" parameter should not be changed
0081   // Both materials are created and can be selected from dna.mac
0082
0083   return material;
0084 }
0085
0086 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0087
0088 G4VPhysicalVolume* DetectorConstruction::ConstructDetector()
0089 {
0090   G4Material* water = OtherMaterial("G4_WATER");
0091
0092   // WORLD VOLUME
0093
0094   double worldSizeX = 2. * micrometer;
0095   double worldSizeY = worldSizeX;
0096   double worldSizeZ = worldSizeX;
0097
0098   G4Box* solidWorld = new G4Box("World",  // its name
0099                                 worldSizeX / 2, worldSizeY / 2, worldSizeZ / 2);  // its size
0100
0101   G4LogicalVolume* logicWorld = new G4LogicalVolume(solidWorld,  // its solid
0102                                                     water,  // its material
0103                                                     "World");  // its name
0104
0105   G4VPhysicalVolume* physiWorld = new G4PVPlacement(0,  // no rotation
0106                                                     G4ThreeVector(),  // at (0,0,0)
0107                                                     "World",  // its name
0108                                                     logicWorld,  // its logical volume
0109                                                     0,  // its mother  volume
0110                                                     false,  // no boolean operation
0111                                                     0);  // copy number
0112
0113   // Visualization attributes
0114   G4VisAttributes* worldVisAtt = new G4VisAttributes(G4Colour(0.0, 0.4, 0.8, 0.5));
0115   worldVisAtt->SetVisibility(true);
0116   logicWorld->SetVisAttributes(worldVisAtt);
0117
0118   return physiWorld;
0119 }