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DetectorConstruction.cc
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34 
35 #include "DetectorConstruction.hh"
36 
37 #include "G4Material.hh"
38 #include "G4Tubs.hh"
39 #include "G4LogicalVolume.hh"
40 #include "G4PVPlacement.hh"
41 #include "G4SystemOfUnits.hh"
42 
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44 
45 DetectorConstruction::DetectorConstruction()
46 :G4VUserDetectorConstruction()
47 {}
48 
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50 
51 DetectorConstruction::~DetectorConstruction()
52 {}
53 
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55 
56 G4VPhysicalVolume* DetectorConstruction::Construct()
57 {
58  //
59  // define a material from its elements. case 1: chemical molecule
60  //
61  G4double a, z;
62  G4double density;
63  G4int ncomponents, natoms;
64 
65  G4Element* C = new G4Element("Carbon" ,"C" , z= 6., a= 12.01*g/mole);
66  G4Element* F = new G4Element("Fluorine","N" , z= 9., a= 18.99*g/mole);
67 
68  G4Material* C6F6 =
69  new G4Material("FluorCarbonate", density= 1.61*g/cm3, ncomponents=2);
70  C6F6->AddElement(C, natoms=6);
71  C6F6->AddElement(F, natoms=6);
72 
73  G4cout << C6F6 << G4endl;
74 
75  //
76  // Container
77  //
78  G4double Rmin=0., Rmax=5*cm, deltaZ= 5*cm, Phimin=0., deltaPhi=360*degree;
79 
80  G4Tubs*
81  solidWorld = new G4Tubs("C6F6", //its name
82  Rmin,Rmax,deltaZ,Phimin,deltaPhi); //its size
83 
84  G4LogicalVolume*
85  logicWorld = new G4LogicalVolume(solidWorld, //its solid
86  C6F6, //its material
87  "C6F6"); //its name
88  G4VPhysicalVolume*
89  physiWorld = new G4PVPlacement(0, //no rotation
90  G4ThreeVector(), //at (0,0,0)
91  logicWorld, //its logical volume
92  "C6F6", //its name
93  0, //its mother volume
94  false, //no boolean operation
95  0); //copy number
96 
97  //
98  //always return the physical World
99  //
100  return physiWorld;
101 }
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