source: trunk/examples/extended/electromagnetic/TestEm11/src/DetectorConstruction.cc@ 1036

Last change on this file since 1036 was 807, checked in by garnier, 17 years ago

update
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1//
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25//
26// $Id: DetectorConstruction.cc,v 1.8 2007/11/07 17:22:16 maire Exp $
27// GEANT4 tag $Name: $
28
29//
30//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
31//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
32
33#include "DetectorConstruction.hh"
34#include "DetectorMessenger.hh"
35
36#include "G4NistManager.hh"
37#include "G4Box.hh"
38#include "G4LogicalVolume.hh"
39#include "G4VPhysicalVolume.hh"
40#include "G4PVPlacement.hh"
41#include "G4PVReplica.hh"
42#include "G4UniformMagField.hh"
43
44#include "G4GeometryManager.hh"
45#include "G4PhysicalVolumeStore.hh"
46#include "G4LogicalVolumeStore.hh"
47#include "G4SolidStore.hh"
48
49#include "G4UnitsTable.hh"
50
51//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
52
53DetectorConstruction::DetectorConstruction()
54{
55 // default parameter values
56 absorSizeX = absorSizeYZ = 1*mm;
57 nbOfLayers = 1;
58
59 absorMaterial = 0;
60 magField = 0;
61 pAbsor = 0;
62
63 DefineMaterials();
64 SetMaterial("G4_Si");
65
66 // create commands for interactive definition of the detector
67 detectorMessenger = new DetectorMessenger(this);
68}
69
70//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
71
72DetectorConstruction::~DetectorConstruction()
73{ delete detectorMessenger;}
74
75//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
76
77G4VPhysicalVolume* DetectorConstruction::Construct()
78{
79 return ConstructVolumes();
80}
81
82//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
83
84void DetectorConstruction::DefineMaterials()
85{
86 G4NistManager* man = G4NistManager::Instance();
87
88 G4bool isotopes = false;
89
90 man->FindOrBuildMaterial("G4_Al", isotopes);
91 man->FindOrBuildMaterial("G4_Si", isotopes);
92 man->FindOrBuildMaterial("G4_Fe", isotopes);
93 man->FindOrBuildMaterial("G4_Ge", isotopes);
94 man->FindOrBuildMaterial("G4_Mo", isotopes);
95 man->FindOrBuildMaterial("G4_Ta", isotopes);
96 man->FindOrBuildMaterial("G4_W" , isotopes);
97 man->FindOrBuildMaterial("G4_Au", isotopes);
98 man->FindOrBuildMaterial("G4_Pb", isotopes);
99 man->FindOrBuildMaterial("G4_PbWO4", isotopes);
100 man->FindOrBuildMaterial("G4_SODIUM_IODIDE", isotopes);
101
102 man->FindOrBuildMaterial("G4_AIR" , isotopes);
103 ///man->FindOrBuildMaterial("G4_WATER", isotopes);
104
105 G4Element* H = man->FindOrBuildElement("H", isotopes);
106 G4Element* O = man->FindOrBuildElement("O", isotopes);
107
108 G4Material* H2O =
109 new G4Material("Water", 1.000*g/cm3, 2);
110 H2O->AddElement(H, 2);
111 H2O->AddElement(O, 1);
112 H2O->GetIonisation()->SetMeanExcitationEnergy(75.0*eV);
113
114 G4cout << *(G4Material::GetMaterialTable()) << G4endl;
115}
116
117//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
118
119G4VPhysicalVolume* DetectorConstruction::ConstructVolumes()
120{
121 G4GeometryManager::GetInstance()->OpenGeometry();
122 G4PhysicalVolumeStore::GetInstance()->Clean();
123 G4LogicalVolumeStore::GetInstance()->Clean();
124 G4SolidStore::GetInstance()->Clean();
125
126 // Absorber
127 //
128 G4Box*
129 sAbsor = new G4Box("Absorber", //name
130 absorSizeX/2,absorSizeYZ/2,absorSizeYZ/2); //size
131
132 G4LogicalVolume*
133 lAbsor = new G4LogicalVolume(sAbsor, //solid
134 absorMaterial, //material
135 "Absorber"); //name
136
137 pAbsor = new G4PVPlacement(0, //no rotation
138 G4ThreeVector(), //at (0,0,0)
139 lAbsor, //logical volume
140 "Absorber", //name
141 0, //mother volume
142 false, //no boolean operation
143 0); //copy number
144
145 // Layers
146 //
147 layerThickness = absorSizeX/nbOfLayers;
148
149 if (nbOfLayers > 1) {
150
151 G4Box*
152 sLayer = new G4Box("Layer", //name
153 layerThickness/2,absorSizeYZ/2,absorSizeYZ/2); //dimensions
154
155 G4LogicalVolume*
156 lLayer = new G4LogicalVolume(sLayer, //shape
157 absorMaterial, //material
158 "Layer"); //name
159
160 new G4PVReplica("Layer", //name
161 lLayer, //logical volume
162 lAbsor, //mother volume
163 kXAxis, //axis of replica
164 nbOfLayers, //number of replica
165 layerThickness); //width of replica
166 }
167
168 PrintParameters();
169
170 //
171 //always return the root volume
172 //
173 return pAbsor;
174}
175
176//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
177
178void DetectorConstruction::PrintParameters()
179{
180 G4cout << "\n---------------------------------------------------------\n";
181 G4cout << "---> The Absorber is " << G4BestUnit(absorSizeX,"Length")
182 << " of " << absorMaterial->GetName() << " divided in " << nbOfLayers
183 << " slices of " << G4BestUnit(layerThickness,"Length") << G4endl;
184 G4cout << "\n---------------------------------------------------------\n";
185}
186
187//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
188
189void DetectorConstruction::SetSizeX(G4double value)
190{
191 absorSizeX = value;
192}
193
194//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
195
196void DetectorConstruction::SetSizeYZ(G4double value)
197{
198 absorSizeYZ = value;
199}
200
201//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
202
203void DetectorConstruction::SetMaterial(G4String materialChoice)
204{
205 // search the material by its name
206 G4Material* pttoMaterial = G4Material::GetMaterial(materialChoice);
207 if (pttoMaterial) absorMaterial = pttoMaterial;
208}
209
210//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
211
212void DetectorConstruction::SetNbOfLayers(G4int value)
213{
214 nbOfLayers = value;
215}
216
217//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
218
219#include "G4FieldManager.hh"
220#include "G4TransportationManager.hh"
221
222void DetectorConstruction::SetMagField(G4double fieldValue)
223{
224 //apply a global uniform magnetic field along Z axis
225 G4FieldManager* fieldMgr
226 = G4TransportationManager::GetTransportationManager()->GetFieldManager();
227
228 if (magField) delete magField; //delete the existing magn field
229
230 if (fieldValue!=0.) // create a new one if non nul
231 {
232 magField = new G4UniformMagField(G4ThreeVector(0.,0.,fieldValue));
233 fieldMgr->SetDetectorField(magField);
234 fieldMgr->CreateChordFinder(magField);
235 }
236 else
237 {
238 magField = 0;
239 fieldMgr->SetDetectorField(magField);
240 }
241}
242
243//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
244
245#include "G4RunManager.hh"
246
247void DetectorConstruction::UpdateGeometry()
248{
249G4RunManager::GetRunManager()->DefineWorldVolume(ConstructVolumes());
250}
251
252//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
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