Geant4 Cross Reference

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Geant4/examples/extended/eventgenerator/particleGun/src/DetectorConstruction.cc

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 25 //
 26 /// \file eventgenerator/particleGun/src/DetectorConstruction.cc
 27 /// \brief Implementation of the DetectorConstruction class
 28 //
 29 //
 30 //
 31 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
 32 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
 33 
 34 #include "DetectorConstruction.hh"
 35 
 36 #include "G4Box.hh"
 37 #include "G4LogicalVolume.hh"
 38 #include "G4NistManager.hh"
 39 #include "G4PVPlacement.hh"
 40 #include "G4SystemOfUnits.hh"
 41 
 42 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
 43 
 44 DetectorConstruction::DetectorConstruction()
 45 {
 46   fWorldSizeXY = 2 * cm;
 47   fWorldSizeZ = 2 * cm;
 48 }
 49 
 50 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
 51 
 52 G4VPhysicalVolume* DetectorConstruction::Construct()
 53 {
 54   //
 55   // define a material
 56   //
 57   G4Material* Air = G4NistManager::Instance()->FindOrBuildMaterial("G4_AIR");
 58 
 59   //
 60   // World
 61   //
 62   G4Box* solidWorld = new G4Box("World",  // its name
 63                                 fWorldSizeXY / 2, fWorldSizeXY / 2, fWorldSizeZ / 2);  // its size
 64 
 65   G4LogicalVolume* logicWorld = new G4LogicalVolume(solidWorld,  // its solid
 66                                                     Air,  // its material
 67                                                     "World");  // its name
 68   G4VPhysicalVolume* physiWorld = new G4PVPlacement(0,  // no rotation
 69                                                     G4ThreeVector(),  // at (0,0,0)
 70                                                     logicWorld,  // its logical volume
 71                                                     "World",  // its name
 72                                                     0,  // its mother  volume
 73                                                     false,  // no boolean operation
 74                                                     0);  // copy number
 75 
 76   //
 77   // always return the physical World
 78   //
 79   return physiWorld;
 80 }
 81 
 82 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
 83