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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 medical/dna/wvalue/src/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 #include "G4UserLimits.hh"
55
56 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
57
58 DetectorConstruction::DetectorConstruction()
59 : G4VUserDetectorConstruction(), fAbsorMaterial(0), fAbsor(0), fDetectorMessenger(0)
60 {
61 // Default tracking cut
62 fTrackingCut = 7.4 * eV;
63
64 // Default parameter values
65 fAbsorRadius = 1 * m;
66
67 DefineMaterials();
68 SetMaterial("G4_WATER");
69
70 // Create commands for interactive definition of the detector
71 fDetectorMessenger = new DetectorMessenger(this);
72 }
73
74 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
75
76 DetectorConstruction::~DetectorConstruction()
77 {
78 delete fDetectorMessenger;
79 }
80
81 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
82
83 G4VPhysicalVolume* DetectorConstruction::Construct()
84 {
85 return ConstructVolumes();
86 }
87
88 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
89
90 void DetectorConstruction::DefineMaterials()
91 {
92 G4NistManager* man = G4NistManager::Instance();
93
94 man->FindOrBuildMaterial("G4_WATER");
95 }
96
97 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
98
99 G4VPhysicalVolume* DetectorConstruction::ConstructVolumes()
100 {
101 G4GeometryManager::GetInstance()->OpenGeometry();
102 G4PhysicalVolumeStore::GetInstance()->Clean();
103 G4LogicalVolumeStore::GetInstance()->Clean();
104 G4SolidStore::GetInstance()->Clean();
105
106 // Spherical absorber
107
108 G4Sphere* sAbsor = new G4Sphere("Absorber", // name
109 0., fAbsorRadius, 0., twopi, 0., pi); // size
110
111 fLogicalAbsor = new G4LogicalVolume(sAbsor, // solid
112 fAbsorMaterial, // material
113 "Absorber"); // name
114
115 fAbsor = new G4PVPlacement(0, // no rotation
116 G4ThreeVector(), // at (0,0,0)
117 fLogicalAbsor, // logical volume
118 "Absorber", // name
119 0, // mother volume
120 false, // no boolean operation
121 0); // copy number
122
123 PrintParameters();
124
125 fLogicalAbsor->SetUserLimits(new G4UserLimits(DBL_MAX, DBL_MAX, DBL_MAX, fTrackingCut));
126
127 // Always return the root volume
128
129 return fAbsor;
130 }
131
132 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
133
134 void DetectorConstruction::PrintParameters() const
135 {
136 G4cout << "\n---------------------------------------------------------\n";
137 G4cout << "---> The tracking cut is set to " << G4BestUnit(fTrackingCut, "Energy") << G4endl;
138 G4cout << "---> The Absorber is a sphere of " << G4BestUnit(fAbsorRadius, "Length")
139 << " radius of " << fAbsorMaterial->GetName() << " made of"
140 << "\n \n"
141 << fAbsorMaterial << G4endl;
142 G4cout << "\n---------------------------------------------------------\n";
143 }
144
145 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
146
147 void DetectorConstruction::SetTrackingCut(G4double value)
148 {
149 fTrackingCut = value;
150 G4RunManager::GetRunManager()->ReinitializeGeometry();
151 }
152
153 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
154
155 void DetectorConstruction::SetRadius(G4double value)
156 {
157 fAbsorRadius = value;
158 G4RunManager::GetRunManager()->ReinitializeGeometry();
159 }
160
161 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
162
163 void DetectorConstruction::SetMaterial(G4String materialChoice)
164 {
165 // search the material by its name
166 G4Material* pttoMaterial = G4Material::GetMaterial(materialChoice);
167 if (pttoMaterial) fAbsorMaterial = pttoMaterial;
168 G4RunManager::GetRunManager()->PhysicsHasBeenModified();
169 }
170