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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 = 1 * m;
56 DefineMaterials();
57 SetMaterial("Water_ts");
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 // specific element name for thermal neutronHP
80 // (see G4ParticleHPThermalScatteringNames.cc)
81
82 G4int ncomponents, natoms;
83
84 // pressurized water
85 G4Element* H = new G4Element("TS_H_of_Water", "H", 1., 1.0079 * g / mole);
86 G4Element* O = new G4Element("Oxygen", "O", 8., 16.00 * g / mole);
87 G4Material* H2O = new G4Material("Water_ts", 1.000 * g / cm3, ncomponents = 2, kStateLiquid,
88 593 * kelvin, 150 * bar);
89 H2O->AddElement(H, natoms = 2);
90 H2O->AddElement(O, natoms = 1);
91 H2O->GetIonisation()->SetMeanExcitationEnergy(78.0 * eV);
92
93 // heavy water
94 G4Isotope* H2 = new G4Isotope("H2", 1, 2);
95 G4Element* D = new G4Element("TS_D_of_Heavy_Water", "D", 1);
96 D->AddIsotope(H2, 100 * perCent);
97 G4Material* D2O = new G4Material("HeavyWater", 1.11 * g / cm3, ncomponents = 2, kStateLiquid,
98 293.15 * kelvin, 1 * atmosphere);
99 D2O->AddElement(D, natoms = 2);
100 D2O->AddElement(O, natoms = 1);
101
102 // graphite
103 G4Isotope* C12 = new G4Isotope("C12", 6, 12);
104 G4Element* C = new G4Element("TS_C_of_Graphite", "C", ncomponents = 1);
105 C->AddIsotope(C12, 100. * perCent);
106 G4Material* graphite = new G4Material("graphite", 2.27 * g / cm3, ncomponents = 1, kStateSolid,
107 293 * kelvin, 1 * atmosphere);
108 graphite->AddElement(C, natoms = 1);
109
110 /// G4cout << *(G4Material::GetMaterialTable()) << G4endl;
111 }
112
113 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
114
115 G4Material* DetectorConstruction::MaterialWithSingleIsotope(G4String name, G4String symbol,
116 G4double density, G4int Z, G4int A)
117 {
118 // define a material from an isotope
119 //
120 G4int ncomponents;
121 G4double abundance, massfraction;
122
123 G4Isotope* isotope = new G4Isotope(symbol, Z, A);
124
125 G4Element* element = new G4Element(name, symbol, ncomponents = 1);
126 element->AddIsotope(isotope, abundance = 100. * perCent);
127
128 G4Material* material = new G4Material(name, density, ncomponents = 1);
129 material->AddElement(element, massfraction = 100. * perCent);
130
131 return material;
132 }
133
134 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
135
136 G4VPhysicalVolume* DetectorConstruction::ConstructVolumes()
137 {
138 // Cleanup old geometry
139 G4GeometryManager::GetInstance()->OpenGeometry();
140 G4PhysicalVolumeStore::GetInstance()->Clean();
141 G4LogicalVolumeStore::GetInstance()->Clean();
142 G4SolidStore::GetInstance()->Clean();
143
144 G4Box* sBox = new G4Box("Container", // its name
145 fBoxSize / 2, fBoxSize / 2, fBoxSize / 2); // its dimensions
146
147 fLBox = new G4LogicalVolume(sBox, // its shape
148 fMaterial, // its material
149 fMaterial->GetName()); // its name
150
151 fPBox = new G4PVPlacement(0, // no rotation
152 G4ThreeVector(), // at (0,0,0)
153 fLBox, // its logical volume
154 fMaterial->GetName(), // its name
155 0, // its mother volume
156 false, // no boolean operation
157 0); // copy number
158
159 PrintParameters();
160
161 // always return the root volume
162 //
163 return fPBox;
164 }
165
166 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
167
168 void DetectorConstruction::PrintParameters()
169 {
170 G4cout << "\n The Box is " << G4BestUnit(fBoxSize, "Length") << " of " << fMaterial->GetName()
171 << "\n \n"
172 << fMaterial << G4endl;
173 }
174
175 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
176
177 void DetectorConstruction::SetMaterial(G4String materialChoice)
178 {
179 // search the material by its name
180 G4Material* pttoMaterial = G4NistManager::Instance()->FindOrBuildMaterial(materialChoice);
181
182 if (pttoMaterial) {
183 if (fMaterial != pttoMaterial) {
184 fMaterial = pttoMaterial;
185 if (fLBox) {
186 fLBox->SetMaterial(pttoMaterial);
187 }
188 G4RunManager::GetRunManager()->PhysicsHasBeenModified();
189 }
190 }
191 else {
192 G4cout << "\n--> warning from DetectorConstruction::SetMaterial : " << materialChoice
193 << " not found" << G4endl;
194 }
195 }
196
197 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
198
199 void DetectorConstruction::SetSize(G4double value)
200 {
201 fBoxSize = value;
202 G4RunManager::GetRunManager()->ReinitializeGeometry();
203 }
204
205 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
206