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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/range/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 man->FindOrBuildMaterial("G4_WATER");
94 }
95
96 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
97
98 G4VPhysicalVolume* DetectorConstruction::ConstructVolumes()
99 {
100 G4GeometryManager::GetInstance()->OpenGeometry();
101 G4PhysicalVolumeStore::GetInstance()->Clean();
102 G4LogicalVolumeStore::GetInstance()->Clean();
103 G4SolidStore::GetInstance()->Clean();
104
105 // Spherical absorber
106 G4Sphere* sAbsor = new G4Sphere("Absorber", // name
107 0., fAbsorRadius, 0., twopi, 0., pi); // size
108
109 fLogicalAbsor = new G4LogicalVolume(sAbsor, // solid
110 fAbsorMaterial, // material
111 "Absorber"); // name
112
113 fAbsor = new G4PVPlacement(0, // no rotation
114 G4ThreeVector(), // at (0,0,0)
115 fLogicalAbsor, // logical volume
116 "Absorber", // name
117 0, // mother volume
118 false, // no boolean operation
119 0); // copy number
120
121 PrintParameters();
122
123 fLogicalAbsor->SetUserLimits(new G4UserLimits(DBL_MAX, DBL_MAX, DBL_MAX, fTrackingCut));
124
125 // Always return the root volume
126 return fAbsor;
127 }
128
129 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
130
131 void DetectorConstruction::PrintParameters() const
132 {
133 G4cout << "\n---------------------------------------------------------\n";
134 G4cout << "---> The tracking cut to all particles is set to "
135 << G4BestUnit(fTrackingCut, "Energy") << G4endl;
136 G4cout << "---> The Absorber is a sphere of " << G4BestUnit(fAbsorRadius, "Length")
137 << " radius of " << fAbsorMaterial->GetName() << " made of"
138 << "\n \n"
139 << fAbsorMaterial << G4endl;
140 G4cout << "\n---------------------------------------------------------\n";
141 }
142
143 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
144
145 void DetectorConstruction::SetTrackingCut(G4double value)
146 {
147 fTrackingCut = value;
148 G4RunManager::GetRunManager()->ReinitializeGeometry();
149 }
150
151 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
152
153 void DetectorConstruction::SetRadius(G4double value)
154 {
155 fAbsorRadius = value;
156 G4RunManager::GetRunManager()->ReinitializeGeometry();
157 }
158
159 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
160
161 void DetectorConstruction::SetMaterial(G4String materialChoice)
162 {
163 G4NistManager::Instance()->FindOrBuildMaterial(materialChoice);
164 // Search the material by its name
165 G4Material* pttoMaterial = G4Material::GetMaterial(materialChoice);
166 if (pttoMaterial) fAbsorMaterial = pttoMaterial;
167 G4RunManager::GetRunManager()->PhysicsHasBeenModified();
168 }
169