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25 //
26 /// \file medical/fanoCavity2/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 "G4Material.hh"
41 #include "G4NistManager.hh"
42 #include "G4PVPlacement.hh"
43 #include "G4PhysicalConstants.hh"
44 #include "G4PhysicalVolumeStore.hh"
45 #include "G4SolidStore.hh"
46 #include "G4SystemOfUnits.hh"
47 #include "G4Tubs.hh"
48 #include "G4UnitsTable.hh"
49 #include "G4VPhysicalVolume.hh"
50
51 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
52
53 DetectorConstruction::DetectorConstruction() : fWall(nullptr), fCavity(nullptr)
54 {
55 // default parameter values
56 fWallThickness = 5 * cm;
57 fCavityThickness = 2 * mm;
58 fCavityRadius = 10 * m;
59
60 DefineMaterials();
61 SetWallMaterial("G4_WATER");
62 SetCavityMaterial("g4Water_gas");
63
64 // create commands for interactive definition of the detector
65 fDetectorMessenger = new DetectorMessenger(this);
66 }
67
68 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
69
70 DetectorConstruction::~DetectorConstruction()
71 {
72 delete fDetectorMessenger;
73 }
74
75 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
76
77 void DetectorConstruction::DefineMaterials()
78 {
79 G4double z, a;
80
81 G4Element* H = new G4Element("Hydrogen", "H", z = 1., a = 1.01 * g / mole);
82 G4Element* O = new G4Element("Oxygen", "O", z = 8., a = 16.00 * g / mole);
83
84 G4Material* H2O = new G4Material("Water", 1.0 * g / cm3, 2);
85 H2O->AddElement(H, 2);
86 H2O->AddElement(O, 1);
87 H2O->GetIonisation()->SetMeanExcitationEnergy(78.0 * eV);
88
89 G4Material* gas = new G4Material("Water_gas", 1.0 * mg / cm3, 2);
90 gas->AddElement(H, 2);
91 gas->AddElement(O, 1);
92 gas->GetIonisation()->SetMeanExcitationEnergy(78.0 * eV);
93
94 new G4Material("Graphite", 6, 12.01 * g / mole, 2.265 * g / cm3);
95 new G4Material("Graphite_gas", 6, 12.01 * g / mole, 2.265 * mg / cm3);
96
97 new G4Material("Aluminium", 13, 26.98 * g / mole, 2.700 * g / cm3);
98 new G4Material("Aluminium_gas", 13, 26.98 * g / mole, 2.700 * mg / cm3);
99
100 // alternatively, use G4 data base
101 //
102 G4NistManager* nist = G4NistManager::Instance();
103
104 nist->FindOrBuildMaterial("G4_WATER");
105 nist->BuildMaterialWithNewDensity("g4Water_gas", "G4_WATER", 1.0 * mg / cm3);
106
107 // printout
108 G4cout << *(G4Material::GetMaterialTable()) << G4endl;
109 }
110
111 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
112
113 G4VPhysicalVolume* DetectorConstruction::Construct()
114 {
115 if (fWall) {
116 return fWall;
117 }
118
119 // Chamber
120 //
121 fTotalThickness = fCavityThickness + 2 * fWallThickness;
122 fWallRadius = fCavityRadius;
123
124 G4Tubs* sChamber = new G4Tubs("Chamber", // name
125 0., fWallRadius, 0.5 * fTotalThickness, 0., twopi); // size
126
127 G4LogicalVolume* lChamber = new G4LogicalVolume(sChamber, // solid
128 fWallMaterial, // material
129 "Chamber"); // name
130
131 fWall = new G4PVPlacement(0, // no rotation
132 G4ThreeVector(), // at (0,0,0)
133 lChamber, // logical volume
134 "Wall", // name
135 0, // mother volume
136 false, // no boolean operation
137 0); // copy number
138
139 // Cavity
140 //
141 G4Tubs* sCavity = new G4Tubs("Cavity", 0., fCavityRadius, 0.5 * fCavityThickness, 0., twopi);
142
143 G4LogicalVolume* lCavity = new G4LogicalVolume(sCavity, // shape
144 fCavityMaterial, // material
145 "Cavity"); // name
146
147 fCavity = new G4PVPlacement(0, // no rotation
148 G4ThreeVector(), // at (0,0,0)
149 lCavity, // logical volume
150 "Cavity", // name
151 lChamber, // mother volume
152 false, // no boolean operation
153 1); // copy number
154
155 PrintParameters();
156
157 //
158 // always return the root volume
159 //
160 return fWall;
161 }
162
163 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
164
165 void DetectorConstruction::PrintParameters()
166 {
167 G4cout << "\n---------------------------------------------------------\n";
168 G4cout << "---> The Wall is " << G4BestUnit(fWallThickness, "Length") << " of "
169 << fWallMaterial->GetName() << " ( "
170 << G4BestUnit(fWallMaterial->GetDensity(), "Volumic Mass") << " )\n";
171 G4cout << " The Cavity is " << G4BestUnit(fCavityThickness, "Length") << " of "
172 << fCavityMaterial->GetName() << " ( "
173 << G4BestUnit(fCavityMaterial->GetDensity(), "Volumic Mass") << " )";
174 G4cout << "\n---------------------------------------------------------\n";
175 G4cout << G4endl;
176 }
177
178 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
179
180 void DetectorConstruction::SetWallThickness(G4double value)
181 {
182 fWallThickness = value;
183 }
184
185 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
186
187 void DetectorConstruction::SetWallMaterial(const G4String& materialChoice)
188 {
189 // search the material by its name
190 G4Material* pttoMaterial = G4Material::GetMaterial(materialChoice);
191 if (pttoMaterial) fWallMaterial = pttoMaterial;
192 }
193
194 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
195
196 void DetectorConstruction::SetCavityThickness(G4double value)
197 {
198 fCavityThickness = value;
199 }
200
201 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
202
203 void DetectorConstruction::SetCavityRadius(G4double value)
204 {
205 fCavityRadius = value;
206 }
207
208 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
209
210 void DetectorConstruction::SetCavityMaterial(const G4String& materialChoice)
211 {
212 // search the material by its name
213 G4Material* pttoMaterial = G4Material::GetMaterial(materialChoice);
214 if (pttoMaterial) fCavityMaterial = pttoMaterial;
215 }
216
217 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
218