source: trunk/examples/extended/electromagnetic/TestEm2/src/DetectorConstruction.cc @ 1170

Last change on this file since 1170 was 807, checked in by garnier, 16 years ago

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27// $Id: DetectorConstruction.cc,v 1.12 2006/10/20 16:03:40 maire Exp $
28// GEANT4 tag $Name:  $
29
30//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
31//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
32
33#include "DetectorConstruction.hh"
34#include "DetectorMessenger.hh"
35
36#include "G4Tubs.hh"
37#include "G4LogicalVolume.hh"
38#include "G4PVPlacement.hh"
39#include "G4UniformMagField.hh"
40
41#include "G4GeometryManager.hh"
42#include "G4PhysicalVolumeStore.hh"
43#include "G4LogicalVolumeStore.hh"
44#include "G4SolidStore.hh"
45
46#include "G4UnitsTable.hh"
47
48//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
49
50DetectorConstruction::DetectorConstruction()
51:nLtot(40),nRtot(50),dLradl(0.5),dRradl(0.1),
52 dLlength(0.),dRlength(0.),
53 myMaterial(0),magField(0),
54 EcalLength(0.),EcalRadius(0.),
55 solidEcal(0),logicEcal(0),physiEcal(0)
56{
57  DefineMaterials();
58  SetMaterial("PbWO4");
59  detectorMessenger = new DetectorMessenger(this);
60}
61
62//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
63
64DetectorConstruction::~DetectorConstruction()
65{ delete detectorMessenger;}
66
67//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
68
69G4VPhysicalVolume* DetectorConstruction::Construct()
70{
71  return ConstructVolumes();
72}
73
74//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
75
76void DetectorConstruction::DefineMaterials()
77{
78  //
79  // define few Elements
80  //
81  G4double a, z;
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* Ge = new G4Element("Germanium", "Ge",z=32., a=  72.59*g/mole);
87  G4Element* W  = new G4Element("Tungsten",  "W", z=74., a= 183.84*g/mole);
88  G4Element* Pb = new G4Element("Lead",      "Pb",z=82., a= 207.19*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  G4double fractionmass;  G4int ncomponents, natoms;
96
97  G4Material* Air = 
98  new G4Material("Air", density= 1.29*mg/cm3, ncomponents=2);
99  Air->AddElement(N, fractionmass=0.7);
100  Air->AddElement(O, fractionmass=0.3);
101
102  G4Material* H2O = 
103  new G4Material("Water", density= 1.00*g/cm3, ncomponents=2);
104  H2O->AddElement(H, natoms=2);
105  H2O->AddElement(O, natoms=1);
106  H2O->GetIonisation()->SetMeanExcitationEnergy(75.0*eV);
107
108  new G4Material("liquidArgon", z=18., a= 39.95*g/mole, density= 1.390*g/cm3);
109
110  new G4Material("Aluminium",   z=13., a= 26.98*g/mole, density= 2.7*g/cm3);
111
112  new G4Material("Iron",        z=26., a= 55.85*g/mole, density= 7.87*g/cm3);
113 
114  new G4Material("Copper"     , z=29., a= 63.55*g/mole, density= 8.960*g/cm3);
115 
116  new G4Material("Lead",        z=82., a=207.19*g/mole, density=11.35*g/cm3);
117 
118  new G4Material("Uranium"    , z=92., a=238.03*g/mole, density= 18.95*g/cm3);
119   
120  G4Material* BGO = 
121  new G4Material("BGO", density= 7.10*g/cm3, ncomponents=3);
122  BGO->AddElement(O , natoms=12);
123  BGO->AddElement(Ge, natoms= 3);
124  BGO->AddElement(Bi, natoms= 4);
125
126  G4Material* PbWO = 
127  new G4Material("PbWO4", density= 8.28*g/cm3, ncomponents=3);
128  PbWO->AddElement(O , natoms=4);
129  PbWO->AddElement(Pb, natoms=1);
130  PbWO->AddElement(W , natoms=1);
131
132  G4cout << *(G4Material::GetMaterialTable()) << G4endl;
133}
134
135//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
136
137G4VPhysicalVolume* DetectorConstruction::ConstructVolumes()
138{
139  G4double Radl = myMaterial->GetRadlen();
140
141  dLlength = dLradl*Radl; dRlength = dRradl*Radl;
142  EcalLength = nLtot*dLlength;  EcalRadius = nRtot*dRlength;
143
144  // Cleanup old geometry
145  G4GeometryManager::GetInstance()->OpenGeometry();
146  G4PhysicalVolumeStore::GetInstance()->Clean();
147  G4LogicalVolumeStore::GetInstance()->Clean();
148  G4SolidStore::GetInstance()->Clean();
149
150  //
151  // Ecal
152  //
153  solidEcal = new G4Tubs("Ecal",0.,EcalRadius,0.5*EcalLength,0.,360*deg);
154  logicEcal = new G4LogicalVolume( solidEcal,myMaterial,"Ecal",0,0,0);
155  physiEcal = new G4PVPlacement(0,G4ThreeVector(),
156                                logicEcal,"Ecal",0,false,0);
157
158  G4cout << "Absorber is " << G4BestUnit(EcalLength,"Length")
159         << " of " << myMaterial->GetName() << G4endl;
160  G4cout << myMaterial << G4endl;     
161
162  //
163  //always return the physical World
164  //
165  return physiEcal;
166}
167
168//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
169
170void DetectorConstruction::SetMaterial(const G4String& materialChoice)
171{
172  // search the material by its name
173  G4Material* pttoMaterial = G4Material::GetMaterial(materialChoice);
174  if (pttoMaterial) myMaterial = pttoMaterial;
175}
176
177//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
178
179void DetectorConstruction::SetLBining(G4ThreeVector Value)
180{
181  nLtot = (G4int)Value(0);
182  if (nLtot > MaxBin) {
183    G4cout << "\n ---> warning from SetLBining: "
184           << nLtot << " truncated to " << MaxBin << G4endl;
185    nLtot = MaxBin;
186  } 
187  dLradl = Value(1);
188}
189
190//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
191
192void DetectorConstruction::SetRBining(G4ThreeVector Value)
193{
194  nRtot = (G4int)Value(0);
195  if (nRtot > MaxBin) {
196    G4cout << "\n ---> warning from SetRBining: "
197           << nRtot << " truncated to " << MaxBin << G4endl;
198    nRtot = MaxBin;
199  }   
200  dRradl = Value(1);
201}
202
203//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
204
205#include "G4FieldManager.hh"
206#include "G4TransportationManager.hh"
207
208void DetectorConstruction::SetMagField(G4double fieldValue)
209{
210  //apply a global uniform magnetic field along Z axis
211  G4FieldManager* fieldMgr
212   = G4TransportationManager::GetTransportationManager()->GetFieldManager();
213
214  if(magField) delete magField;         //delete the existing magn field
215
216  if(fieldValue!=0.)                    // create a new one if non nul
217  { magField = new G4UniformMagField(G4ThreeVector(0.,0.,fieldValue));
218    fieldMgr->SetDetectorField(magField);
219    fieldMgr->CreateChordFinder(magField);
220  } else {
221    magField = 0;
222    fieldMgr->SetDetectorField(magField);
223  }
224}
225
226//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
227
228#include "G4RunManager.hh"
229
230void DetectorConstruction::UpdateGeometry()
231{
232  G4RunManager::GetRunManager()->DefineWorldVolume(ConstructVolumes());
233}
234
235//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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