| Geant4 Cross Reference |
1 // 1
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25 //
26 //
27 /// \file B1/src/DetectorConstruction.cc
28 /// \brief Implementation of the B1::DetectorC
29
30 #include "DetectorConstruction.hh"
31
32 #include "G4Box.hh"
33 #include "G4Cons.hh"
34 #include "G4LogicalVolume.hh"
35 #include "G4NistManager.hh"
36 #include "G4PVPlacement.hh"
37 #include "G4SystemOfUnits.hh"
38 #include "G4Trd.hh"
39
40 namespace B1
41 {
42
43 //....oooOO0OOooo........oooOO0OOooo........oo
44
45 G4VPhysicalVolume* DetectorConstruction::Const
46 {
47 // Get nist material manager
48 G4NistManager* nist = G4NistManager::Instanc
49
50 // Envelope parameters
51 //
52 G4double env_sizeXY = 20 * cm, env_sizeZ = 3
53 G4Material* env_mat = nist->FindOrBuildMater
54
55 // Option to switch on/off checking of volum
56 //
57 G4bool checkOverlaps = true;
58
59 //
60 // World
61 //
62 G4double world_sizeXY = 1.2 * env_sizeXY;
63 G4double world_sizeZ = 1.2 * env_sizeZ;
64 G4Material* world_mat = nist->FindOrBuildMat
65
66 auto solidWorld =
67 new G4Box("World", // its name
68 0.5 * world_sizeXY, 0.5 * world_
69
70 auto logicWorld = new G4LogicalVolume(solidW
71 world_
72 "World
73
74 auto physWorld = new G4PVPlacement(nullptr,
75 G4ThreeVe
76 logicWorl
77 "World",
78 nullptr,
79 false, /
80 0, // co
81 checkOver
82
83 //
84 // Envelope
85 //
86 auto solidEnv = new G4Box("Envelope", // it
87 0.5 * env_sizeXY,
88
89 auto logicEnv = new G4LogicalVolume(solidEnv
90 env_mat,
91 "Envelop
92
93 new G4PVPlacement(nullptr, // no rotation
94 G4ThreeVector(), // at (0
95 logicEnv, // its logical
96 "Envelope", // its name
97 logicWorld, // its mother
98 false, // no boolean oper
99 0, // copy number
100 checkOverlaps); // overla
101
102 //
103 // Shape 1
104 //
105 G4Material* shape1_mat = nist->FindOrBuildMa
106 G4ThreeVector pos1 = G4ThreeVector(0, 2 * cm
107
108 // Conical section shape
109 G4double shape1_rmina = 0. * cm, shape1_rmax
110 G4double shape1_rminb = 0. * cm, shape1_rmax
111 G4double shape1_hz = 3. * cm;
112 G4double shape1_phimin = 0. * deg, shape1_ph
113 auto solidShape1 = new G4Cons("Shape1", shap
114 shape1_hz, sha
115
116 auto logicShape1 = new G4LogicalVolume(solid
117 shape
118 "Shap
119
120 new G4PVPlacement(nullptr, // no rotation
121 pos1, // at position
122 logicShape1, // its logic
123 "Shape1", // its name
124 logicEnv, // its mother
125 false, // no boolean oper
126 0, // copy number
127 checkOverlaps); // overla
128
129 //
130 // Shape 2
131 //
132 G4Material* shape2_mat = nist->FindOrBuildMa
133 G4ThreeVector pos2 = G4ThreeVector(0, -1 * c
134
135 // Trapezoid shape
136 G4double shape2_dxa = 12 * cm, shape2_dxb =
137 G4double shape2_dya = 10 * cm, shape2_dyb =
138 G4double shape2_dz = 6 * cm;
139 auto solidShape2 =
140 new G4Trd("Shape2", // its name
141 0.5 * shape2_dxa, 0.5 * shape2_d
142 0.5 * shape2_dz); // its size
143
144 auto logicShape2 = new G4LogicalVolume(solid
145 shape
146 "Shap
147
148 new G4PVPlacement(nullptr, // no rotation
149 pos2, // at position
150 logicShape2, // its logic
151 "Shape2", // its name
152 logicEnv, // its mother
153 false, // no boolean oper
154 0, // copy number
155 checkOverlaps); // overla
156
157 // Set Shape2 as scoring volume
158 //
159 fScoringVolume = logicShape2;
160
161 //
162 // always return the physical World
163 //
164 return physWorld;
165 }
166
167 //....oooOO0OOooo........oooOO0OOooo........oo
168
169 } // namespace B1
170