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25 //
26 /// \file electromagnetic/TestEm12/src/DetectorConstruction.cc
27 /// \brief Implementation of the DetectorConstruction class
28 //
29 //
30 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
31 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
32
33 #include "DetectorConstruction.hh"
34
35 #include "DetectorMessenger.hh"
36
37 #include "G4GeometryManager.hh"
38 #include "G4LogicalVolume.hh"
39 #include "G4LogicalVolumeStore.hh"
40 #include "G4NistManager.hh"
41 #include "G4PVPlacement.hh"
42 #include "G4PVReplica.hh"
43 #include "G4PhysicalConstants.hh"
44 #include "G4PhysicalVolumeStore.hh"
45 #include "G4RunManager.hh"
46 #include "G4SolidStore.hh"
47 #include "G4Sphere.hh"
48 #include "G4SystemOfUnits.hh"
49 #include "G4UnitsTable.hh"
50 #include "G4VPhysicalVolume.hh"
51
52 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
53
54 DetectorConstruction::DetectorConstruction()
55 {
56 // default parameter values
57 fAbsorRadius = 3 * cm;
58 fNbOfLayers = 1;
59
60 DefineMaterials();
61 SetMaterial("G4_WATER");
62
63 // create commands for interactive definition of the detector
64 fDetectorMessenger = new DetectorMessenger(this);
65 }
66
67 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
68
69 DetectorConstruction::~DetectorConstruction()
70 {
71 delete fDetectorMessenger;
72 }
73
74 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
75
76 void DetectorConstruction::DefineMaterials()
77 {
78 G4NistManager* man = G4NistManager::Instance();
79
80 man->FindOrBuildMaterial("G4_Al");
81 man->FindOrBuildMaterial("G4_Si");
82 man->FindOrBuildMaterial("G4_Fe");
83 man->FindOrBuildMaterial("G4_Ge");
84 man->FindOrBuildMaterial("G4_Gd");
85 man->FindOrBuildMaterial("G4_W");
86 man->FindOrBuildMaterial("G4_Pb");
87
88 man->FindOrBuildMaterial("G4_AIR");
89 man->FindOrBuildMaterial("G4_WATER");
90 man->FindOrBuildMaterial("G4_ALUMINUM_OXIDE");
91
92 /// G4cout << *(G4Material::GetMaterialTable()) << G4endl;
93 }
94
95 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
96
97 G4VPhysicalVolume* DetectorConstruction::Construct()
98 {
99 // Absorber
100 //
101 G4Sphere* sAbsor = new G4Sphere("Absorber", // name
102 0., fAbsorRadius, 0., twopi, 0., pi); // size
103
104 fSpheres.push_back(sAbsor);
105
106 G4LogicalVolume* lAbsor = new G4LogicalVolume(sAbsor, // solid
107 fAbsorMaterial, // material
108 "Absorber"); // name
109 fLVolumes.push_back(lAbsor);
110
111 fAbsor = new G4PVPlacement(0, // no rotation
112 G4ThreeVector(), // at (0,0,0)
113 lAbsor, // logical volume
114 "Absorber", // name
115 0, // mother volume
116 false, // no boolean operation
117 0); // copy number
118
119 // Layers
120 //
121 fLayerThickness = fAbsorRadius / fNbOfLayers;
122
123 for (G4int i = 1; i <= fNbOfLayers; i++) {
124 G4Sphere* sLayer =
125 new G4Sphere("Layer", (i - 1) * fLayerThickness, i * fLayerThickness, 0., twopi, 0., pi);
126
127 fSpheres.push_back(sLayer);
128
129 G4LogicalVolume* lLayer = new G4LogicalVolume(sLayer, // shape
130 fAbsorMaterial, // material
131 "Layer"); // name
132 fLVolumes.push_back(lLayer);
133
134 new G4PVPlacement(0, // no rotation
135 G4ThreeVector(), // at (0,0,0)
136 lLayer, // logical volume
137 "Layer", // name
138 lAbsor, // mother volume
139 false, // no boolean operation
140 i); // copy number
141 }
142
143 PrintParameters();
144
145 //
146 // always return the root volume
147 //
148 return fAbsor;
149 }
150
151 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
152
153 void DetectorConstruction::PrintParameters()
154 {
155 G4cout << "\n---------------------------------------------------------\n";
156 G4cout << "---> The Absorber is a sphere of " << G4BestUnit(fAbsorRadius, "Length")
157 << " radius of " << fAbsorMaterial->GetName() << " divided in " << fNbOfLayers
158 << " slices of " << G4BestUnit(fLayerThickness, "Length") << "\n \n"
159 << fAbsorMaterial << G4endl;
160 G4cout << "\n---------------------------------------------------------\n";
161 }
162
163 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
164
165 void DetectorConstruction::SetRadius(G4double value)
166 {
167 // geometry was already constructed - scale radii of all spheres
168 if (fAbsor) {
169 G4double scale = value / fAbsorRadius;
170 for (auto solid : fSpheres) {
171 if (scale > 1.0) {
172 solid->SetOuterRadius(solid->GetOuterRadius() * scale);
173 solid->SetInnerRadius(solid->GetInnerRadius() * scale);
174 }
175 else {
176 solid->SetInnerRadius(solid->GetInnerRadius() * scale);
177 solid->SetOuterRadius(solid->GetOuterRadius() * scale);
178 }
179 }
180 }
181 fAbsorRadius = value;
182 }
183
184 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
185
186 void DetectorConstruction::SetMaterial(G4String materialChoice)
187 {
188 // search the material by its name
189 G4Material* pttoMaterial = G4Material::GetMaterial(materialChoice);
190
191 if (pttoMaterial && pttoMaterial != fAbsorMaterial) {
192 fAbsorMaterial = pttoMaterial;
193 G4RunManager::GetRunManager()->PhysicsHasBeenModified();
194
195 // geometry was already constructed - only change material
196 if (fAbsor) {
197 for (auto lv : fLVolumes) {
198 lv->SetMaterial(fAbsorMaterial);
199 }
200 }
201 }
202 }
203
204 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
205
206 void DetectorConstruction::SetNbOfLayers(G4int value)
207 {
208 fNbOfLayers = value;
209 }
210
211 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
212