source: trunk/examples/extended/electromagnetic/TestEm1/src/DetectorConstruction.cc @ 812

Last change on this file since 812 was 807, checked in by garnier, 16 years ago

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28// $Id: DetectorConstruction.cc,v 1.8 2007/11/12 15:48:58 maire Exp $
29// GEANT4 tag $Name:  $
30//
31//
32
33//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
34//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
35
36#include "DetectorConstruction.hh"
37#include "DetectorMessenger.hh"
38
39#include "G4Material.hh"
40#include "G4Box.hh"
41#include "G4LogicalVolume.hh"
42#include "G4PVPlacement.hh"
43#include "G4UniformMagField.hh"
44
45#include "G4GeometryManager.hh"
46#include "G4PhysicalVolumeStore.hh"
47#include "G4LogicalVolumeStore.hh"
48#include "G4SolidStore.hh"
49
50#include "G4UnitsTable.hh"
51
52//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
53
54DetectorConstruction::DetectorConstruction()
55:pBox(0), lBox(0), aMaterial(0), magField(0)
56{
57  BoxSize = 10*m;
58  DefineMaterials();
59  SetMaterial("Aluminium"); 
60  detectorMessenger = new DetectorMessenger(this);
61}
62
63//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
64
65DetectorConstruction::~DetectorConstruction()
66{ delete detectorMessenger;}
67
68//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
69
70G4VPhysicalVolume* DetectorConstruction::Construct()
71{
72  return ConstructVolumes();
73}
74
75//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
76
77void DetectorConstruction::DefineMaterials()
78{
79  //
80  // define Elements
81  //
82  G4double z,a;
83 
84  G4Element* H  = new G4Element("Hydrogen" ,"H" , z= 1., a=   1.01*g/mole);
85  G4Element* C  = new G4Element("Hydrogen" ,"C" , z= 6., a=  12.00*g/mole);
86  G4Element* N  = new G4Element("Nitrogen" ,"N" , z= 7., a=  14.01*g/mole);
87  G4Element* O  = new G4Element("Oxygen"   ,"O" , z= 8., a=  16.00*g/mole);
88  G4Element* Ge = new G4Element("Germanium","Ge", z=32., a=  72.59*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  density = 0.001*mg/cm3;
115  G4Material* CO2 = new G4Material("CO2", density, ncomponents=2);
116  CO2->AddElement(C, natoms=1);
117  CO2->AddElement(O, natoms=2);
118 
119  new G4Material("D2_gas", z=2., a= 2.0141*g/mole, density= 0.036*mg/cm3);
120
121  new G4Material("liquidArgon", z=18., a= 39.95*g/mole, density= 1.390*g/cm3);
122
123  new G4Material("Aluminium"  , z=13., a= 26.98*g/mole, density= 2.700*g/cm3);
124
125  new G4Material("Silicon"    , z=14., a= 28.09*g/mole, density= 2.330*g/cm3);
126
127  new G4Material("Germanium"  , z=32., a= 72.61*g/mole, density= 5.323*g/cm3);
128 
129  G4Material* BGO = 
130  new G4Material("BGO", density= 7.10*g/cm3, ncomponents=3);
131  BGO->AddElement(O , natoms=12);
132  BGO->AddElement(Ge, natoms= 3);
133  BGO->AddElement(Bi, natoms= 4); 
134
135  new G4Material("Iron"       , z=26., a= 55.85*g/mole, density= 7.870*g/cm3);
136
137  new G4Material("Tungsten"   , z=74., a=183.85*g/mole, density= 19.30*g/cm3);
138
139  new G4Material("Lead"       , z=82., a=207.19*g/mole, density= 11.35*g/cm3);
140
141  new G4Material("Uranium"    , z=92., a=238.03*g/mole, density= 18.95*g/cm3);
142
143
144  G4cout << *(G4Material::GetMaterialTable()) << G4endl;
145}
146
147//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
148
149G4VPhysicalVolume* DetectorConstruction::ConstructVolumes()
150{
151  // Cleanup old geometry
152  G4GeometryManager::GetInstance()->OpenGeometry();
153  G4PhysicalVolumeStore::GetInstance()->Clean();
154  G4LogicalVolumeStore::GetInstance()->Clean();
155  G4SolidStore::GetInstance()->Clean();
156
157  G4Box*
158  sBox = new G4Box("Container",                         //its name
159                   BoxSize/2,BoxSize/2,BoxSize/2);      //its dimensions
160
161  lBox = new G4LogicalVolume(sBox,                      //its shape
162                             aMaterial,                 //its material
163                             aMaterial->GetName());     //its name
164
165  pBox = new G4PVPlacement(0,                           //no rotation
166                           G4ThreeVector(),             //at (0,0,0)
167                           lBox,                        //its logical volume                       
168                           aMaterial->GetName(),        //its name
169                           0,                           //its mother  volume
170                           false,                       //no boolean operation
171                           0);                          //copy number
172                           
173  PrintParameters();
174 
175  //always return the root volume
176  //
177  return pBox;
178}
179
180//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
181
182void DetectorConstruction::PrintParameters()
183{
184  G4cout << "\n The Box is " << G4BestUnit(BoxSize,"Length")
185         << " of " << aMaterial->GetName() << G4endl;
186}
187
188//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
189
190void DetectorConstruction::SetMaterial(G4String materialChoice)
191{
192  // search the material by its name
193  G4Material* pttoMaterial = G4Material::GetMaterial(materialChoice);
194  if (pttoMaterial) aMaterial = pttoMaterial;
195}
196
197//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
198
199void DetectorConstruction::SetSize(G4double value)
200{
201  BoxSize = value;
202}
203
204//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
205
206#include "G4FieldManager.hh"
207#include "G4TransportationManager.hh"
208
209void DetectorConstruction::SetMagField(G4double fieldValue)
210{
211  //apply a global uniform magnetic field along Z axis
212  G4FieldManager* fieldMgr
213   = G4TransportationManager::GetTransportationManager()->GetFieldManager();
214
215  if (magField) delete magField;        //delete the existing magn field
216
217  if (fieldValue!=0.)                   // create a new one if non nul
218    {
219      magField = new G4UniformMagField(G4ThreeVector(0.,0.,fieldValue));
220      fieldMgr->SetDetectorField(magField);
221      fieldMgr->CreateChordFinder(magField);
222    }
223   else
224    {
225      magField = 0;
226      fieldMgr->SetDetectorField(magField);
227    }
228}
229
230//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
231
232#include "G4RunManager.hh"
233
234void DetectorConstruction::UpdateGeometry()
235{
236  G4RunManager::GetRunManager()->DefineWorldVolume(ConstructVolumes());
237}
238
239//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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