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25 //
26 /// \file DetectorConstruction.cc
27 /// \brief Implementation of the DetectorConstruction class
28 //
29 //
30
31 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
32 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
33
34 #include "DetectorConstruction.hh"
35
36 #include "DetectorMessenger.hh"
37
38 #include "G4Box.hh"
39 #include "G4GeometryManager.hh"
40 #include "G4LogicalVolume.hh"
41 #include "G4LogicalVolumeStore.hh"
42 #include "G4Material.hh"
43 #include "G4NistManager.hh"
44 #include "G4PVPlacement.hh"
45 #include "G4PhysicalVolumeStore.hh"
46 #include "G4RunManager.hh"
47 #include "G4SolidStore.hh"
48 #include "G4SystemOfUnits.hh"
49 #include "G4UnitsTable.hh"
50
51 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
52
53 DetectorConstruction::DetectorConstruction()
54 {
55 fBoxSize = 10 * m;
56 DefineMaterials();
57 SetMaterial("Molybdenum98");
58 fDetectorMessenger = new DetectorMessenger(this);
59 }
60
61 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
62
63 DetectorConstruction::~DetectorConstruction()
64 {
65 delete fDetectorMessenger;
66 }
67
68 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
69
70 G4VPhysicalVolume* DetectorConstruction::Construct()
71 {
72 return ConstructVolumes();
73 }
74
75 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
76
77 void DetectorConstruction::DefineMaterials()
78 {
79 // define a Material from isotopes
80 //
81 MaterialWithSingleIsotope("Molybdenum98", "Mo98", 10.28 * g / cm3, 42, 98);
82
83 // NE213
84 G4Element* H = new G4Element("Hydrogen", "H", 1., 1.01 * g / mole);
85 G4Element* C = new G4Element("Carbon", "C", 6., 12.00 * g / mole);
86 G4Material* ne213 = new G4Material("NE213", 0.874 * g / cm3, 2);
87 ne213->AddElement(H, 9.2 * perCent);
88 ne213->AddElement(C, 90.8 * perCent);
89
90 G4Material* hydrogen = new G4Material("hydrogen", 1.0 * g / cm3, 1);
91 hydrogen->AddElement(H, 1);
92
93 G4Material* carbon = new G4Material("carbon", 1.0 * g / cm3, 1);
94 carbon->AddElement(C, 1);
95
96 G4Material* plastic = new G4Material("plastic", 1.0 * g / cm3, 2);
97 plastic->AddElement(H, 1);
98 plastic->AddElement(C, 1);
99
100 // or use G4-NIST materials data base
101 //
102 G4NistManager* man = G4NistManager::Instance();
103 man->FindOrBuildMaterial("G4_B");
104
105 G4Element* O = man->FindOrBuildElement("O");
106 G4Element* Hf = man->FindOrBuildElement("Hf");
107
108 G4Material* HfO2 = new G4Material("HfO2", 9.68 * g / cm3, 2);
109 HfO2->AddElement(Hf, 1);
110 HfO2->AddElement(O, 2);
111
112 /// G4cout << *(G4Material::GetMaterialTable()) << G4endl;
113 }
114
115 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
116
117 G4Material* DetectorConstruction::MaterialWithSingleIsotope(G4String name, G4String symbol,
118 G4double density, G4int Z, G4int A)
119 {
120 // define a material from an isotope
121 //
122 G4int ncomponents;
123 G4double abundance, massfraction;
124
125 G4Isotope* isotope = new G4Isotope(symbol, Z, A);
126
127 G4Element* element = new G4Element(name, symbol, ncomponents = 1);
128 element->AddIsotope(isotope, abundance = 100. * perCent);
129
130 G4Material* material = new G4Material(name, density, ncomponents = 1);
131 material->AddElement(element, massfraction = 100. * perCent);
132
133 return material;
134 }
135
136 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
137
138 G4VPhysicalVolume* DetectorConstruction::ConstructVolumes()
139 {
140 // Cleanup old geometry
141 G4GeometryManager::GetInstance()->OpenGeometry();
142 G4PhysicalVolumeStore::GetInstance()->Clean();
143 G4LogicalVolumeStore::GetInstance()->Clean();
144 G4SolidStore::GetInstance()->Clean();
145
146 G4Box* sBox = new G4Box("Container", // its name
147 fBoxSize / 2, fBoxSize / 2, fBoxSize / 2); // its dimensions
148
149 fLBox = new G4LogicalVolume(sBox, // its shape
150 fMaterial, // its material
151 fMaterial->GetName()); // its name
152
153 fPBox = new G4PVPlacement(0, // no rotation
154 G4ThreeVector(), // at (0,0,0)
155 fLBox, // its logical volume
156 fMaterial->GetName(), // its name
157 0, // its mother volume
158 false, // no boolean operation
159 0); // copy number
160
161 PrintParameters();
162
163 // always return the root volume
164 //
165 return fPBox;
166 }
167
168 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
169
170 void DetectorConstruction::PrintParameters()
171 {
172 G4cout << "\n The Box is " << G4BestUnit(fBoxSize, "Length") << " of " << fMaterial->GetName()
173 << "\n \n"
174 << fMaterial << G4endl;
175 }
176
177 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
178
179 void DetectorConstruction::SetMaterial(G4String materialChoice)
180 {
181 // search the material by its name
182 G4Material* pttoMaterial = G4NistManager::Instance()->FindOrBuildMaterial(materialChoice);
183
184 if (pttoMaterial) {
185 if (fMaterial != pttoMaterial) {
186 fMaterial = pttoMaterial;
187 if (fLBox) {
188 fLBox->SetMaterial(pttoMaterial);
189 }
190 G4RunManager::GetRunManager()->PhysicsHasBeenModified();
191 }
192 }
193 else {
194 G4cout << "\n--> warning from DetectorConstruction::SetMaterial : " << materialChoice
195 << " not found" << G4endl;
196 }
197 }
198
199 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
200
201 void DetectorConstruction::SetSize(G4double value)
202 {
203 fBoxSize = value;
204 G4RunManager::GetRunManager()->ReinitializeGeometry();
205 }
206
207 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
208