TestEm4/src/DetectorConstruction.cc

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0026 /// \file electromagnetic/TestEm4/src/DetectorConstruction.cc
0027 /// \brief Implementation of the DetectorConstruction class
0028 //
0029 //
0030 //
0031
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0034
0035 #include "DetectorConstruction.hh"
0036
0037 #include "G4LogicalVolume.hh"
0038 #include "G4Material.hh"
0039 #include "G4PVPlacement.hh"
0040 #include "G4SystemOfUnits.hh"
0041 #include "G4Tubs.hh"
0042
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0044
0045 G4VPhysicalVolume* DetectorConstruction::Construct()
0046 {
0047   //
0048   // define a material from its elements.   case 1: chemical molecule
0049   //
0050   G4double a, z;
0051   G4double density;
0052   G4int ncomponents, natoms;
0053
0054   G4Element* C = new G4Element("Carbon", "C", z = 6., a = 12.01 * g / mole);
0055   G4Element* F = new G4Element("Fluorine", "F", z = 9., a = 18.99 * g / mole);
0056
0057   G4Material* C6F6 = new G4Material("FluorCarbonate", density = 1.61 * g / cm3, ncomponents = 2);
0058   C6F6->AddElement(C, natoms = 6);
0059   C6F6->AddElement(F, natoms = 6);
0060
0061   G4cout << C6F6 << G4endl;
0062
0063   //
0064   // Container
0065   //
0066   G4double Rmin = 0., Rmax = 5 * cm, deltaZ = 5 * cm, Phimin = 0., deltaPhi = 360 * degree;
0067
0068   G4Tubs* solidWorld = new G4Tubs("C6F6",  // its name
0069                                   Rmin, Rmax, deltaZ, Phimin, deltaPhi);  // its size
0070
0071   G4LogicalVolume* logicWorld = new G4LogicalVolume(solidWorld,  // its solid
0072                                                     C6F6,  // its material
0073                                                     "C6F6");  // its name
0074   G4VPhysicalVolume* physiWorld = new G4PVPlacement(0,  // no rotation
0075                                                     G4ThreeVector(),  // at (0,0,0)
0076                                                     logicWorld,  // its logical volume
0077                                                     "C6F6",  // its name
0078                                                     0,  // its mother  volume
0079                                                     false,  // no boolean operation
0080                                                     0);  // copy number
0081
0082   //
0083   // always return the physical World
0084   //
0085   return physiWorld;
0086 }
0087
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