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25 //
26 // This example is provided by the Geant4-DNA collaboration
27 // Any report or published results obtained using the Geant4-DNA software
28 // shall cite the following Geant4-DNA collaboration publications:
29 // Med. Phys. 45 (2018) e722-e739
30 // Phys. Med. 31 (2015) 861-874
31 // Med. Phys. 37 (2010) 4692-4708
32 // Int. J. Model. Simul. Sci. Comput. 1 (2010) 157–178
33 //
34 // The Geant4-DNA web site is available at http://geant4-dna.org
35 //
36 /// \file DetectorConstruction.cc
37 /// \brief Implementation of the DetectorConstruction class
38
39 #include "DetectorConstruction.hh"
40
41 #include "DetectorMessenger.hh"
42
43 #include "G4GeometryManager.hh"
44 #include "G4LogicalVolumeStore.hh"
45 #include "G4NistManager.hh"
46 #include "G4PVPlacement.hh"
47 #include "G4PhysicalConstants.hh"
48 #include "G4PhysicalVolumeStore.hh"
49 #include "G4RunManager.hh"
50 #include "G4SolidStore.hh"
51 #include "G4Sphere.hh"
52 #include "G4SystemOfUnits.hh"
53 #include "G4UnitsTable.hh"
54
55 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
56
57 DetectorConstruction::DetectorConstruction()
58 : G4VUserDetectorConstruction(), fAbsorMaterial(0), fAbsor(0), fDetectorMessenger(0)
59 {
60 // Default parameter values
61 fAbsorRadius = 1 * m;
62
63 DefineMaterials();
64 SetMaterial("G4_WATER");
65
66 // Create commands for interactive definition of the detector
67 fDetectorMessenger = new DetectorMessenger(this);
68 }
69
70 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
71
72 DetectorConstruction::~DetectorConstruction()
73 {
74 delete fDetectorMessenger;
75 }
76
77 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
78
79 G4VPhysicalVolume* DetectorConstruction::Construct()
80 {
81 return ConstructVolumes();
82 }
83
84 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
85
86 void DetectorConstruction::DefineMaterials()
87 {
88 G4NistManager* man = G4NistManager::Instance();
89 man->FindOrBuildMaterial("G4_WATER");
90 }
91
92 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
93
94 G4VPhysicalVolume* DetectorConstruction::ConstructVolumes()
95 {
96 G4GeometryManager::GetInstance()->OpenGeometry();
97 G4PhysicalVolumeStore::GetInstance()->Clean();
98 G4LogicalVolumeStore::GetInstance()->Clean();
99 G4SolidStore::GetInstance()->Clean();
100
101 // Spherical absorber
102 G4Sphere* sAbsor = new G4Sphere("Absorber", // name
103 0., fAbsorRadius, 0., twopi, 0., pi); // size
104
105 fLogicalAbsor = new G4LogicalVolume(sAbsor, // solid
106 fAbsorMaterial, // material
107 "Absorber"); // name
108
109 fAbsor = new G4PVPlacement(0, // no rotation
110 G4ThreeVector(), // at (0,0,0)
111 fLogicalAbsor, // logical volume
112 "Absorber", // name
113 0, // mother volume
114 false, // no boolean operation
115 0); // copy number
116
117 PrintParameters();
118
119 return fAbsor;
120 }
121
122 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
123
124 void DetectorConstruction::PrintParameters() const
125 {
126 G4cout << "\n---------------------------------------------------------\n";
127 G4cout << "---> The Absorber is a sphere of " << G4BestUnit(fAbsorRadius, "Length")
128 << " radius of " << fAbsorMaterial->GetName() << " made of"
129 << "\n \n"
130 << fAbsorMaterial << G4endl;
131 G4cout << "\n---------------------------------------------------------\n";
132 }
133
134 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
135
136 void DetectorConstruction::SetRadius(G4double value)
137 {
138 fAbsorRadius = value;
139 G4RunManager::GetRunManager()->ReinitializeGeometry();
140 }
141
142 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
143
144 void DetectorConstruction::SetMaterial(G4String materialChoice)
145 {
146 // Search the material by its name
147 G4Material* pttoMaterial = G4Material::GetMaterial(materialChoice);
148 if (pttoMaterial) fAbsorMaterial = pttoMaterial;
149 G4RunManager::GetRunManager()->PhysicsHasBeenModified();
150 }
151