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25 //
26 //
27 /// \file DetectorConstruction.cc
28 /// \brief Implementation of the B1::DetectorConstruction class
29
30 #include "DetectorConstruction.hh"
31
32 #include "G4Box.hh"
33 #include "G4Cons.hh"
34 #include "G4LogicalVolume.hh"
35 #include "G4NistManager.hh"
36 #include "G4Orb.hh"
37 #include "G4PVPlacement.hh"
38 #include "G4RunManager.hh"
39 #include "G4Sphere.hh"
40 #include "G4SystemOfUnits.hh"
41 #include "G4Trd.hh"
42
43 namespace B1
44 {
45
46 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
47
48 G4VPhysicalVolume* DetectorConstruction::Construct()
49 {
50 // Get nist material manager
51 G4NistManager* nist = G4NistManager::Instance();
52
53 // Envelope parameters
54 //
55 G4double env_sizeXY = 20 * cm, env_sizeZ = 30 * cm;
56 G4Material* env_mat = nist->FindOrBuildMaterial("G4_WATER");
57
58 // Option to switch on/off checking of volumes overlaps
59 //
60 G4bool checkOverlaps = true;
61
62 //
63 // World
64 //
65 G4double world_sizeXY = 1.2 * env_sizeXY;
66 G4double world_sizeZ = 1.2 * env_sizeZ;
67 G4Material* world_mat = nist->FindOrBuildMaterial("G4_AIR");
68
69 auto solidWorld =
70 new G4Box("World", // its name
71 0.5 * world_sizeXY, 0.5 * world_sizeXY, 0.5 * world_sizeZ); // its size
72
73 auto logicWorld = new G4LogicalVolume(solidWorld, // its solid
74 world_mat, // its material
75 "World"); // its name
76
77 auto physWorld = new G4PVPlacement(nullptr, // no rotation
78 G4ThreeVector(), // at (0,0,0)
79 logicWorld, // its logical volume
80 "World", // its name
81 nullptr, // its mother volume
82 false, // no boolean operation
83 0, // copy number
84 checkOverlaps); // overlaps checking
85
86 //
87 // Envelope
88 //
89 auto solidEnv = new G4Box("Envelope", // its name
90 0.5 * env_sizeXY, 0.5 * env_sizeXY, 0.5 * env_sizeZ); // its size
91
92 auto logicEnv = new G4LogicalVolume(solidEnv, // its solid
93 env_mat, // its material
94 "Envelope"); // its name
95
96 new G4PVPlacement(nullptr, // no rotation
97 G4ThreeVector(), // at (0,0,0)
98 logicEnv, // its logical volume
99 "Envelope", // its name
100 logicWorld, // its mother volume
101 false, // no boolean operation
102 0, // copy number
103 checkOverlaps); // overlaps checking
104
105 //
106 // Shape 1
107 //
108 G4Material* shape1_mat = nist->FindOrBuildMaterial("G4_A-150_TISSUE");
109 G4ThreeVector pos1 = G4ThreeVector(0, 2 * cm, -7 * cm);
110
111 // Conical section shape
112 G4double shape1_rmina = 0. * cm, shape1_rmaxa = 2. * cm;
113 G4double shape1_rminb = 0. * cm, shape1_rmaxb = 4. * cm;
114 G4double shape1_hz = 3. * cm;
115 G4double shape1_phimin = 0. * deg, shape1_phimax = 360. * deg;
116 auto solidShape1 = new G4Cons("Shape1", shape1_rmina, shape1_rmaxa, shape1_rminb, shape1_rmaxb,
117 shape1_hz, shape1_phimin, shape1_phimax);
118
119 auto logicShape1 = new G4LogicalVolume(solidShape1, // its solid
120 shape1_mat, // its material
121 "Shape1"); // its name
122
123 new G4PVPlacement(nullptr, // no rotation
124 pos1, // at position
125 logicShape1, // its logical volume
126 "Shape1", // its name
127 logicEnv, // its mother volume
128 false, // no boolean operation
129 0, // copy number
130 checkOverlaps); // overlaps checking
131
132 //
133 // Shape 2
134 //
135 G4Material* shape2_mat = nist->FindOrBuildMaterial("G4_BONE_COMPACT_ICRU");
136 G4ThreeVector pos2 = G4ThreeVector(0, -1 * cm, 7 * cm);
137
138 // Trapezoid shape
139 G4double shape2_dxa = 12 * cm, shape2_dxb = 12 * cm;
140 G4double shape2_dya = 10 * cm, shape2_dyb = 16 * cm;
141 G4double shape2_dz = 6 * cm;
142 auto solidShape2 =
143 new G4Trd("Shape2", // its name
144 0.5 * shape2_dxa, 0.5 * shape2_dxb, 0.5 * shape2_dya, 0.5 * shape2_dyb,
145 0.5 * shape2_dz); // its size
146
147 auto logicShape2 = new G4LogicalVolume(solidShape2, // its solid
148 shape2_mat, // its material
149 "Shape2"); // its name
150
151 new G4PVPlacement(nullptr, // no rotation
152 pos2, // at position
153 logicShape2, // its logical volume
154 "Shape2", // its name
155 logicEnv, // its mother volume
156 false, // no boolean operation
157 0, // copy number
158 checkOverlaps); // overlaps checking
159
160 // Set Shape2 as scoring volume
161 //
162 fScoringVolume = logicShape2;
163
164 //
165 // always return the physical World
166 //
167 return physWorld;
168 }
169
170 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
171
172 } // namespace B1
173