| Geant4 Cross Reference |
1 //
2 // ********************************************************************
3 // * License and Disclaimer *
4 // * *
5 // * The Geant4 software is copyright of the Copyright Holders of *
6 // * the Geant4 Collaboration. It is provided under the terms and *
7 // * conditions of the Geant4 Software License, included in the file *
8 // * LICENSE and available at http://cern.ch/geant4/license . These *
9 // * include a list of copyright holders. *
10 // * *
11 // * Neither the authors of this software system, nor their employing *
12 // * institutes,nor the agencies providing financial support for this *
13 // * work make any representation or warranty, express or implied, *
14 // * regarding this software system or assume any liability for its *
15 // * use. Please see the license in the file LICENSE and URL above *
16 // * for the full disclaimer and the limitation of liability. *
17 // * *
18 // * This code implementation is the result of the scientific and *
19 // * technical work of the GEANT4 collaboration. *
20 // * By using, copying, modifying or distributing the software (or *
21 // * any work based on the software) you agree to acknowledge its *
22 // * use in resulting scientific publications, and indicate your *
23 // * acceptance of all terms of the Geant4 Software license. *
24 // ********************************************************************
25 //
26 //
27 /// \file B1/src/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 "G4PVPlacement.hh"
37 #include "G4SystemOfUnits.hh"
38 #include "G4Trd.hh"
39
40 namespace B1
41 {
42
43 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
44
45 G4VPhysicalVolume* DetectorConstruction::Construct()
46 {
47 // Get nist material manager
48 G4NistManager* nist = G4NistManager::Instance();
49
50 // Envelope parameters
51 //
52 G4double env_sizeXY = 20 * cm, env_sizeZ = 30 * cm;
53 G4Material* env_mat = nist->FindOrBuildMaterial("G4_WATER");
54
55 // Option to switch on/off checking of volumes overlaps
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->FindOrBuildMaterial("G4_AIR");
65
66 auto solidWorld =
67 new G4Box("World", // its name
68 0.5 * world_sizeXY, 0.5 * world_sizeXY, 0.5 * world_sizeZ); // its size
69
70 auto logicWorld = new G4LogicalVolume(solidWorld, // its solid
71 world_mat, // its material
72 "World"); // its name
73
74 auto physWorld = new G4PVPlacement(nullptr, // no rotation
75 G4ThreeVector(), // at (0,0,0)
76 logicWorld, // its logical volume
77 "World", // its name
78 nullptr, // its mother volume
79 false, // no boolean operation
80 0, // copy number
81 checkOverlaps); // overlaps checking
82
83 //
84 // Envelope
85 //
86 auto solidEnv = new G4Box("Envelope", // its name
87 0.5 * env_sizeXY, 0.5 * env_sizeXY, 0.5 * env_sizeZ); // its size
88
89 auto logicEnv = new G4LogicalVolume(solidEnv, // its solid
90 env_mat, // its material
91 "Envelope"); // its name
92
93 new G4PVPlacement(nullptr, // no rotation
94 G4ThreeVector(), // at (0,0,0)
95 logicEnv, // its logical volume
96 "Envelope", // its name
97 logicWorld, // its mother volume
98 false, // no boolean operation
99 0, // copy number
100 checkOverlaps); // overlaps checking
101
102 //
103 // Shape 1
104 //
105 G4Material* shape1_mat = nist->FindOrBuildMaterial("G4_A-150_TISSUE");
106 G4ThreeVector pos1 = G4ThreeVector(0, 2 * cm, -7 * cm);
107
108 // Conical section shape
109 G4double shape1_rmina = 0. * cm, shape1_rmaxa = 2. * cm;
110 G4double shape1_rminb = 0. * cm, shape1_rmaxb = 4. * cm;
111 G4double shape1_hz = 3. * cm;
112 G4double shape1_phimin = 0. * deg, shape1_phimax = 360. * deg;
113 auto solidShape1 = new G4Cons("Shape1", shape1_rmina, shape1_rmaxa, shape1_rminb, shape1_rmaxb,
114 shape1_hz, shape1_phimin, shape1_phimax);
115
116 auto logicShape1 = new G4LogicalVolume(solidShape1, // its solid
117 shape1_mat, // its material
118 "Shape1"); // its name
119
120 new G4PVPlacement(nullptr, // no rotation
121 pos1, // at position
122 logicShape1, // its logical volume
123 "Shape1", // its name
124 logicEnv, // its mother volume
125 false, // no boolean operation
126 0, // copy number
127 checkOverlaps); // overlaps checking
128
129 //
130 // Shape 2
131 //
132 G4Material* shape2_mat = nist->FindOrBuildMaterial("G4_BONE_COMPACT_ICRU");
133 G4ThreeVector pos2 = G4ThreeVector(0, -1 * cm, 7 * cm);
134
135 // Trapezoid shape
136 G4double shape2_dxa = 12 * cm, shape2_dxb = 12 * cm;
137 G4double shape2_dya = 10 * cm, shape2_dyb = 16 * cm;
138 G4double shape2_dz = 6 * cm;
139 auto solidShape2 =
140 new G4Trd("Shape2", // its name
141 0.5 * shape2_dxa, 0.5 * shape2_dxb, 0.5 * shape2_dya, 0.5 * shape2_dyb,
142 0.5 * shape2_dz); // its size
143
144 auto logicShape2 = new G4LogicalVolume(solidShape2, // its solid
145 shape2_mat, // its material
146 "Shape2"); // its name
147
148 new G4PVPlacement(nullptr, // no rotation
149 pos2, // at position
150 logicShape2, // its logical volume
151 "Shape2", // its name
152 logicEnv, // its mother volume
153 false, // no boolean operation
154 0, // copy number
155 checkOverlaps); // overlaps checking
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........oooOO0OOooo........oooOO0OOooo......
168
169 } // namespace B1
170