| Geant4 Cross Reference |
1 // 1
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17 // *
18 // * This code implementation is the result
19 // * technical work of the GEANT4 collaboratio
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24 // *******************************************
25 //
26 //
27 /// \file 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 "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........oo
47
48 G4VPhysicalVolume* DetectorConstruction::Const
49 {
50 // Get nist material manager
51 G4NistManager* nist = G4NistManager::Instanc
52
53 // Envelope parameters
54 //
55 G4double env_sizeXY = 20 * cm, env_sizeZ = 3
56 G4Material* env_mat = nist->FindOrBuildMater
57
58 // Option to switch on/off checking of volum
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->FindOrBuildMat
68
69 auto solidWorld =
70 new G4Box("World", // its name
71 0.5 * world_sizeXY, 0.5 * world_
72
73 auto logicWorld = new G4LogicalVolume(solidW
74 world_
75 "World
76
77 auto physWorld = new G4PVPlacement(nullptr,
78 G4ThreeVe
79 logicWorl
80 "World",
81 nullptr,
82 false, /
83 0, // co
84 checkOver
85
86 //
87 // Envelope
88 //
89 auto solidEnv = new G4Box("Envelope", // it
90 0.5 * env_sizeXY,
91
92 auto logicEnv = new G4LogicalVolume(solidEnv
93 env_mat,
94 "Envelop
95
96 new G4PVPlacement(nullptr, // no rotation
97 G4ThreeVector(), // at (0
98 logicEnv, // its logical
99 "Envelope", // its name
100 logicWorld, // its mother
101 false, // no boolean oper
102 0, // copy number
103 checkOverlaps); // overla
104
105 //
106 // Shape 1
107 //
108 G4Material* shape1_mat = nist->FindOrBuildMa
109 G4ThreeVector pos1 = G4ThreeVector(0, 2 * cm
110
111 // Conical section shape
112 G4double shape1_rmina = 0. * cm, shape1_rmax
113 G4double shape1_rminb = 0. * cm, shape1_rmax
114 G4double shape1_hz = 3. * cm;
115 G4double shape1_phimin = 0. * deg, shape1_ph
116 auto solidShape1 = new G4Cons("Shape1", shap
117 shape1_hz, sha
118
119 auto logicShape1 = new G4LogicalVolume(solid
120 shape
121 "Shap
122
123 new G4PVPlacement(nullptr, // no rotation
124 pos1, // at position
125 logicShape1, // its logic
126 "Shape1", // its name
127 logicEnv, // its mother
128 false, // no boolean oper
129 0, // copy number
130 checkOverlaps); // overla
131
132 //
133 // Shape 2
134 //
135 G4Material* shape2_mat = nist->FindOrBuildMa
136 G4ThreeVector pos2 = G4ThreeVector(0, -1 * c
137
138 // Trapezoid shape
139 G4double shape2_dxa = 12 * cm, shape2_dxb =
140 G4double shape2_dya = 10 * cm, shape2_dyb =
141 G4double shape2_dz = 6 * cm;
142 auto solidShape2 =
143 new G4Trd("Shape2", // its name
144 0.5 * shape2_dxa, 0.5 * shape2_d
145 0.5 * shape2_dz); // its size
146
147 auto logicShape2 = new G4LogicalVolume(solid
148 shape
149 "Shap
150
151 new G4PVPlacement(nullptr, // no rotation
152 pos2, // at position
153 logicShape2, // its logic
154 "Shape2", // its name
155 logicEnv, // its mother
156 false, // no boolean oper
157 0, // copy number
158 checkOverlaps); // overla
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........oo
171
172 } // namespace B1
173