Geant4 Cross Reference

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Geant4/examples/extended/radioactivedecay/rdecay01/src/DetectorConstruction.cc

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 25 //
 26 /// \file DetectorConstruction.cc
 27 /// \brief Implementation of the DetectorConstruction class
 28 //
 29 //
 30 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
 31 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
 32 
 33 #include "DetectorConstruction.hh"
 34 
 35 #include "G4Box.hh"
 36 #include "G4LogicalVolume.hh"
 37 #include "G4NistManager.hh"
 38 #include "G4PVPlacement.hh"
 39 #include "G4SystemOfUnits.hh"
 40 
 41 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
 42 
 43 DetectorConstruction::DetectorConstruction()
 44 {
 45   fWorldSize = 20 * mm;
 46 }
 47 
 48 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
 49 
 50 G4VPhysicalVolume* DetectorConstruction::Construct()
 51 {
 52   //
 53   // define a material
 54   //
 55   G4Material* Air = G4NistManager::Instance()->FindOrBuildMaterial("G4_AIR");
 56 
 57   //
 58   // World
 59   //
 60   G4Box* solidWorld = new G4Box("World",  // its name
 61                                 fWorldSize / 2, fWorldSize / 2, fWorldSize / 2);  // its size
 62 
 63   G4LogicalVolume* logicWorld = new G4LogicalVolume(solidWorld,  // its solid
 64                                                     Air,  // its material
 65                                                     "World");  // its name
 66   G4VPhysicalVolume* physiWorld = new G4PVPlacement(0,  // no rotation
 67                                                     G4ThreeVector(),  // at (0,0,0)
 68                                                     logicWorld,  // its logical volume
 69                                                     "World",  // its name
 70                                                     0,  // its mother  volume
 71                                                     false,  // no boolean operation
 72                                                     0);  // copy number
 73 
 74   //
 75   // always return the physical World
 76   //
 77   return physiWorld;
 78 }
 79 
 80 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
 81