Geant4  9.6.p02
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DetectorConstruction.cc
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29 // $Id$
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33 
34 #include "DetectorConstruction.hh"
35 #include "DetectorMessenger.hh"
36 
37 #include "G4Material.hh"
38 #include "G4Box.hh"
39 #include "G4LogicalVolume.hh"
40 #include "G4PVPlacement.hh"
41 
42 #include "G4GeometryManager.hh"
43 #include "G4PhysicalVolumeStore.hh"
44 #include "G4LogicalVolumeStore.hh"
45 #include "G4SolidStore.hh"
46 
47 #include "G4UnitsTable.hh"
48 #include "G4SystemOfUnits.hh"
49 
50 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
51 
52 DetectorConstruction::DetectorConstruction()
53 :fPBox(0), fLBox(0), fMaterial(0)
54 {
55  fBoxSize = 1*cm;
56  DefineMaterials();
57  SetMaterial("Water");
58  fDetectorMessenger = new DetectorMessenger(this);
59 }
60 
61 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
62 
63 DetectorConstruction::~DetectorConstruction()
64 { delete fDetectorMessenger;}
65 
66 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
67 
68 G4VPhysicalVolume* DetectorConstruction::Construct()
69 {
70  return ConstructVolumes();
71 }
72 
73 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
74 
75 void DetectorConstruction::DefineMaterials()
76 {
77  //
78  // define Elements
79  //
80  G4double z,a;
81 
82  G4Element* H = new G4Element("Hydrogen" ,"H" , z= 1., a= 1.01*g/mole);
83  G4Element* N = new G4Element("Nitrogen" ,"N" , z= 7., a= 14.01*g/mole);
84  G4Element* O = new G4Element("Oxygen" ,"O" , z= 8., a= 16.00*g/mole);
85  G4Element* Na = new G4Element("Sodium" ,"Na", z=11., a= 22.99*g/mole);
86  G4Element* Ge = new G4Element("Germanium","Ge", z=32., a= 72.59*g/mole);
87  G4Element* I = new G4Element("Iodine" ,"I" , z=53., a= 126.90*g/mole);
88  G4Element* Bi = new G4Element("Bismuth" ,"Bi", z=83., a= 208.98*g/mole);
89 
90  //
91  // define materials
92  //
93  G4double density;
94  G4int ncomponents, natoms;
95  G4double fractionmass;
96 
97  G4Material* Air =
98  new G4Material("Air", density= 1.290*mg/cm3, ncomponents=2);
99  Air->AddElement(N, fractionmass=70.*perCent);
100  Air->AddElement(O, fractionmass=30.*perCent);
101 
102  G4Material* H2l =
103  new G4Material("H2liquid", density= 70.8*mg/cm3, ncomponents=1);
104  H2l->AddElement(H, fractionmass=1.);
105 
106  G4Material* H2O =
107  new G4Material("Water", density= 1.000*g/cm3, ncomponents=2);
108  H2O->AddElement(H, natoms=2);
109  H2O->AddElement(O, natoms=1);
110  H2O->SetChemicalFormula("H_2O");
111  H2O->GetIonisation()->SetMeanExcitationEnergy(78.0*eV);
112 
113  new G4Material("liquidArgon", z=18., a= 39.95*g/mole, density= 1.390*g/cm3);
114 
115  new G4Material("Carbon" , z=6., a= 12.01*g/mole, density= 2.267*g/cm3);
116 
117  new G4Material("Aluminium" , z=13., a= 26.98*g/mole, density= 2.700*g/cm3);
118 
119  new G4Material("Silicon" , z=14., a= 28.09*g/mole, density= 2.330*g/cm3);
120 
121  new G4Material("Germanium" , z=32., a= 72.61*g/mole, density= 5.323*g/cm3);
122 
123  G4Material* NaI =
124  new G4Material("NaI", density= 3.67*g/cm3, ncomponents=2);
125  NaI->AddElement(Na, natoms=1);
126  NaI->AddElement(I , natoms=1);
127  NaI->GetIonisation()->SetMeanExcitationEnergy(452*eV);
128 
129  G4Material* Iod =
130  new G4Material("Iodine", density= 4.93*g/cm3, ncomponents=1);
131  Iod->AddElement(I , natoms=1);
132 
133  G4Material* BGO =
134  new G4Material("BGO", density= 7.10*g/cm3, ncomponents=3);
135  BGO->AddElement(O , natoms=12);
136  BGO->AddElement(Ge, natoms= 3);
137  BGO->AddElement(Bi, natoms= 4);
138 
139  new G4Material("Iron" , z=26., a= 55.85*g/mole, density= 7.870*g/cm3);
140 
141  new G4Material("Tungsten" , z=74., a=183.85*g/mole, density= 19.30*g/cm3);
142 
143  new G4Material("Lead" , z=82., a=207.19*g/mole, density= 11.35*g/cm3);
144 
145  new G4Material("Uranium" , z=92., a=238.03*g/mole, density= 18.95*g/cm3);
146 
147  G4cout << *(G4Material::GetMaterialTable()) << G4endl;
148 }
149 
150 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
151 
152 G4VPhysicalVolume* DetectorConstruction::ConstructVolumes()
153 {
154  // Cleanup old geometry
155  G4GeometryManager::GetInstance()->OpenGeometry();
156  G4PhysicalVolumeStore::GetInstance()->Clean();
157  G4LogicalVolumeStore::GetInstance()->Clean();
158  G4SolidStore::GetInstance()->Clean();
159 
160  G4Box*
161  sBox = new G4Box("Container", //its name
162  fBoxSize/2,fBoxSize/2,fBoxSize/2); //its dimensions
163 
164  fLBox = new G4LogicalVolume(sBox, //its shape
165  fMaterial, //its material
166  fMaterial->GetName()); //its name
167 
168  fPBox = new G4PVPlacement(0, //no rotation
169  G4ThreeVector(), //at (0,0,0)
170  fLBox, //its logical volume
171  fMaterial->GetName(), //its name
172  0, //its mother volume
173  false, //no boolean operation
174  0); //copy number
175 
176  PrintParameters();
177 
178  //always return the root volume
179  //
180  return fPBox;
181 }
182 
183 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
184 
185 void DetectorConstruction::PrintParameters()
186 {
187  G4cout << "\n The Box is " << G4BestUnit(fBoxSize,"Length")
188  << " of " << fMaterial->GetName() << G4endl;
189 }
190 
191 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
192 
193 void DetectorConstruction::SetMaterial(G4String materialChoice)
194 {
195  // search the material by its name
196  G4Material* pttoMaterial = G4Material::GetMaterial(materialChoice);
197  if (pttoMaterial) {
198  fMaterial = pttoMaterial;
199  UpdateGeometry();
200  } else {
201  G4cout << "\n--> warning from DetectorConstruction::SetMaterial : "
202  << materialChoice << " not found" << G4endl;
203  }
204 }
205 
206 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
207 
208 void DetectorConstruction::SetSize(G4double value)
209 {
210  fBoxSize = value;
211  UpdateGeometry();
212 }
213 
214 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
215 
216 #include "G4RunManager.hh"
217 
218 void DetectorConstruction::UpdateGeometry()
219 {
220  if (fPBox)
221  G4RunManager::GetRunManager()->DefineWorldVolume(ConstructVolumes());
222 }
223 
224 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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