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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 "G4PhysicalConstants.hh"
49 #include "G4SystemOfUnits.hh"
50 
51 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
52 
53 DetectorConstruction::DetectorConstruction()
54 :fWorld(0), fBox(0), fMaterial(0)
55 {
56  fBoxSize = 100*m; fWorldSize = 1.2*fBoxSize;
57  DefineMaterials();
58  SetMaterial("Water");
59  fDetectorMessenger = new DetectorMessenger(this);
60 }
61 
62 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
63 
64 DetectorConstruction::~DetectorConstruction()
65 { delete fDetectorMessenger;}
66 
67 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
68 
69 G4VPhysicalVolume* DetectorConstruction::Construct()
70 {
71  return ConstructVolumes();
72 }
73 
74 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
75 
76 void DetectorConstruction::DefineMaterials()
77 {
78  //
79  // define Elements
80  //
81  G4double z,a;
82 
83  G4Element* H = new G4Element("Hydrogen" ,"H" , z= 1., a= 1.01*g/mole);
84  G4Element* N = new G4Element("Nitrogen" ,"N" , z= 7., a= 14.01*g/mole);
85  G4Element* O = new G4Element("Oxygen" ,"O" , z= 8., a= 16.00*g/mole);
86  G4Element* Na = new G4Element("Sodium" ,"Na", z=11., a= 22.99*g/mole);
87  G4Element* Ge = new G4Element("Germanium","Ge", z=32., a= 72.59*g/mole);
88  G4Element* I = new G4Element("Iodine" ,"I" , z=53., a= 126.90*g/mole);
89  G4Element* Bi = new G4Element("Bismuth" ,"Bi", z=83., a= 208.98*g/mole);
90 
91  //
92  // define materials
93  //
94  G4double density;
95  G4int ncomponents, natoms;
96  G4double fractionmass;
97 
98  G4Material* Air =
99  new G4Material("Air", density= 1.290*mg/cm3, ncomponents=2);
100  Air->AddElement(N, fractionmass=70.*perCent);
101  Air->AddElement(O, fractionmass=30.*perCent);
102 
103  G4Material* H2l =
104  new G4Material("H2liquid", density= 70.8*mg/cm3, ncomponents=1);
105  H2l->AddElement(H, fractionmass=1.);
106 
107  G4Material* H2O =
108  new G4Material("Water", density= 1.000*g/cm3, ncomponents=2);
109  H2O->AddElement(H, natoms=2);
110  H2O->AddElement(O, natoms=1);
111  H2O->SetChemicalFormula("H_2O");
112  H2O->GetIonisation()->SetMeanExcitationEnergy(75.0*eV);
113 
114  new G4Material("liquidArgon", z=18., a= 39.95*g/mole, density= 1.390*g/cm3);
115 
116  new G4Material("Carbon" , z=6., a= 12.01*g/mole, density= 2.267*g/cm3);
117 
118  new G4Material("Aluminium" , z=13., a= 26.98*g/mole, density= 2.700*g/cm3);
119 
120  new G4Material("Silicon" , z=14., a= 28.09*g/mole, density= 2.330*g/cm3);
121 
122  new G4Material("Germanium" , z=32., a= 72.61*g/mole, density= 5.323*g/cm3);
123 
124  G4Material* NaI =
125  new G4Material("NaI", density= 3.67*g/cm3, ncomponents=2);
126  NaI->AddElement(Na, natoms=1);
127  NaI->AddElement(I , natoms=1);
128  NaI->GetIonisation()->SetMeanExcitationEnergy(452*eV);
129 
130  G4Material* Iod =
131  new G4Material("Iodine", density= 4.93*g/cm3, ncomponents=1);
132  Iod->AddElement(I , natoms=1);
133 
134  G4Material* BGO =
135  new G4Material("BGO", density= 7.10*g/cm3, ncomponents=3);
136  BGO->AddElement(O , natoms=12);
137  BGO->AddElement(Ge, natoms= 3);
138  BGO->AddElement(Bi, natoms= 4);
139 
140  new G4Material("Iron" , z=26., a= 55.85*g/mole, density= 7.870*g/cm3);
141 
142  new G4Material("Tungsten" , z=74., a=183.85*g/mole, density= 19.30*g/cm3);
143 
144  new G4Material("Lead" , z=82., a=207.19*g/mole, density= 11.35*g/cm3);
145 
146  new G4Material("Uranium" , z=92., a=238.03*g/mole, density= 18.95*g/cm3);
147 
148  density = universe_mean_density; //from PhysicalConstants.h
149  G4double pressure = 3.e-18*pascal;
150  G4double temperature = 2.73*kelvin;
151  G4Material* vacuum =
152  new G4Material("Galactic",z= 1,a= 1.008*g/mole,density,
153  kStateGas,temperature,pressure);
154 
155  G4cout << *(G4Material::GetMaterialTable()) << G4endl;
156 
157  //default material
158  fWMaterial = vacuum;
159 }
160 
161 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
162 
163 G4VPhysicalVolume* DetectorConstruction::ConstructVolumes()
164 {
165  // Cleanup old geometry
166  G4GeometryManager::GetInstance()->OpenGeometry();
167  G4PhysicalVolumeStore::GetInstance()->Clean();
168  G4LogicalVolumeStore::GetInstance()->Clean();
169  G4SolidStore::GetInstance()->Clean();
170 
171  // World
172  //
173  G4Box*
174  sWorld = new G4Box("World", //name
175  fWorldSize/2,fWorldSize/2,fWorldSize/2); //dimensions
176 
177  G4LogicalVolume*
178  lWorld = new G4LogicalVolume(sWorld, //shape
179  fWMaterial, //material
180  "World"); //name
181 
182  fWorld = new G4PVPlacement(0, //no rotation
183  G4ThreeVector(), //at (0,0,0)
184  lWorld, //logical volume
185  "World", //name
186  0, //mother volume
187  false, //no boolean operation
188  0); //copy number
189 
190  // Box
191  //
192  G4Box*
193  sBox = new G4Box("Container", //its name
194  fBoxSize/2,fBoxSize/2,fBoxSize/2); //its dimensions
195 
196  G4LogicalVolume*
197  lBox = new G4LogicalVolume(sBox, //its shape
198  fMaterial, //its material
199  fMaterial->GetName()); //its name
200 
201  fBox = new G4PVPlacement(0, //no rotation
202  G4ThreeVector(), //at (0,0,0)
203  lBox, //its logical volume
204  fMaterial->GetName(), //its name
205  lWorld, //its mother volume
206  false, //no boolean operation
207  0); //copy number
208 
209  PrintParameters();
210 
211  //always return the root volume
212  //
213  return fWorld;
214 }
215 
216 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
217 
218 void DetectorConstruction::PrintParameters()
219 {
220  G4cout << "\n The Box is " << G4BestUnit(fBoxSize,"Length")
221  << " of " << fMaterial->GetName() << G4endl;
222 }
223 
224 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
225 
226 void DetectorConstruction::SetMaterial(G4String materialChoice)
227 {
228  // search the material by its name
229  G4Material* pttoMaterial = G4Material::GetMaterial(materialChoice);
230  if (pttoMaterial) {
231  fMaterial = pttoMaterial;
232  UpdateGeometry();
233  } else {
234  G4cout << "\n--> warning from DetectorConstruction::SetMaterial : "
235  << materialChoice << " not found" << G4endl;
236  }
237 }
238 
239 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
240 
241 void DetectorConstruction::SetSize(G4double value)
242 {
243  fBoxSize = value; fWorldSize = 1.2*fBoxSize;
244  UpdateGeometry();
245 }
246 
247 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
248 
249 #include "G4RunManager.hh"
250 
251 void DetectorConstruction::UpdateGeometry()
252 {
253  if (fWorld)
254  G4RunManager::GetRunManager()->DefineWorldVolume(ConstructVolumes());
255 }
256 
257 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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