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25 //
26 /// \file DetectorConstruction.cc
27 /// \brief Implementation of the DetectorConstruction class
28 //
29 //
30
31 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
32 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
33
34 #include "DetectorConstruction.hh"
35
36 #include "DetectorMessenger.hh"
37 #include "PrimaryGeneratorAction.hh"
38
39 #include "G4Box.hh"
40 #include "G4GeometryManager.hh"
41 #include "G4LogicalVolume.hh"
42 #include "G4LogicalVolumeStore.hh"
43 #include "G4Material.hh"
44 #include "G4NistManager.hh"
45 #include "G4Orb.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 "G4ThreeVector.hh"
54 #include "globals.hh"
55
56 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
57
58 DetectorConstruction::DetectorConstruction()
59 : fMaterial(nullptr),
60 fExperimentalHall_log(nullptr),
61 fExperimentalHall_phys(nullptr),
62 fLogicSphere(nullptr),
63 fPhysiSphere(nullptr),
64 fLogicScoringShell(nullptr),
65 fPhysiScoringShell(nullptr),
66 fDetectorMessenger(nullptr),
67 fRadius(1.0 * CLHEP::m) //***LOOKHERE*** Default values
68 {
69 // G4cout << " BEGIN DetectorConstruction::DetectorConstruction()" << G4endl;
70 fMaterial = G4NistManager::Instance()->FindOrBuildMaterial("G4_Fe"); //***LOOKHERE***
71 // Default material
72 fDetectorMessenger = new DetectorMessenger(this);
73 // G4cout << " END DetectorConstruction::DetectorConstruction()" << G4endl;
74 }
75
76 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
77
78 DetectorConstruction::~DetectorConstruction()
79 {
80 delete fDetectorMessenger;
81 }
82
83 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
84
85 G4VPhysicalVolume* DetectorConstruction::Construct()
86 {
87 // G4cout << " BEGIN DetectorConstruction::Construct()" << G4endl;
88 return ConstructSphere();
89 }
90
91 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
92
93 G4VPhysicalVolume* DetectorConstruction::ConstructSphere()
94 {
95 // G4cout << " BEGIN DetectorConstruction::ConstructSphere()" << G4endl;
96
97 // Clean old geometry, if any.
98 G4GeometryManager::GetInstance()->OpenGeometry();
99
100 G4PhysicalVolumeStore::GetInstance()->Clean();
101 G4LogicalVolumeStore::GetInstance()->Clean();
102 G4SolidStore::GetInstance()->Clean();
103
104 // The target is a full solid sphere (G4Orb), positioned at the center, (0.0, 0.0, 0.0).
105 // The world volume (experimental hall) is a box 10% bigger than the sphere
106 // and it is filled of "G4_Galactic" material.
107
108 G4double expHall_x = 1.1 * fRadius; // half dimension along x
109 G4double expHall_y = 1.1 * fRadius; // half dimension along y
110 G4double expHall_z = 1.1 * fRadius; // half dimension along z
111
112 G4Material* vacuum = G4NistManager::Instance()->FindOrBuildMaterial("G4_Galactic");
113
114 // Experimental hall
115 G4Box* experimentalHall_box = new G4Box("expHall_box", expHall_x, expHall_y, expHall_z);
116 fExperimentalHall_log = new G4LogicalVolume(experimentalHall_box, // solid
117 vacuum, // material
118 "expHall_log", // name
119 0, // field manager
120 0, // sensitive detector
121 0); // user limits
122 fExperimentalHall_phys = new G4PVPlacement(0, // rotation
123 G4ThreeVector(), // translation
124 "expHall", // name
125 fExperimentalHall_log, // logical volume
126 0, // mother physical volume
127 false, // boolean operation
128 0); // copy number
129
130 // Target sphere
131 G4Orb* solidSphere = new G4Orb("solidSphere", // name
132 fRadius); // outer radius
133 fLogicSphere = new G4LogicalVolume(solidSphere, // solid
134 fMaterial, // material
135 "logicSphere", // name
136 0, // field manager
137 0, // sensitive detector
138 0); // user limits
139 fPhysiSphere = new G4PVPlacement(0, // rotation
140 G4ThreeVector(), // translation
141 "physiSphere", // name
142 fLogicSphere, // logical volume
143 fExperimentalHall_phys, // mother physical volume
144 false, // boolean operation
145 0); // copy number
146
147 // Scoring shell (a thin vacuum layer, immediately outside the target sphere)
148 G4Sphere* solidScoringShell = new G4Sphere("solidScoringShell", // name
149 fRadius, // Inner radius (the radius
150 // of the target sphere)
151 fRadius + fScoringThickness, // Outer radius
152 0.0, // Starting Phi angle of the
153 // segment in radians
154 2.0 * CLHEP::pi, // Delta Phi angle of the
155 // segment in radians
156 0.0, // Starting Theta angle of
157 // the segment in radians
158 CLHEP::pi); // Delta Theta angle of the
159 // segment in radians
160 fLogicScoringShell = new G4LogicalVolume(solidScoringShell, // solid
161 vacuum, // material
162 "logicScoringShell", // name
163 0, // field manager
164 0, // sensitive detector
165 0); // user limits
166 fPhysiScoringShell = new G4PVPlacement(0, // rotation
167 G4ThreeVector(), // translation
168 "physiScoringShell", // name
169 fLogicScoringShell, // logical volume
170 fExperimentalHall_phys, // mother physical volume
171 false, // boolean operation
172 0); // copy number
173
174 G4cout << G4endl << "DetectorConstruction::ConstructSphere() : " << G4endl
175 << "\t World (box) size: " << G4endl << "\t \t x : -/+ " << expHall_x << " mm ;"
176 << "\t y : -/+ " << expHall_y << " mm ;"
177 << "\t z : -/+ " << expHall_z << " mm ;" << G4endl << G4endl << G4endl;
178
179 // G4cout << " END DetectorConstruction::ConstructSphere()
180
181 return fExperimentalHall_phys;
182 }
183
184 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
185
186 void DetectorConstruction::SetMaterial(const G4String name)
187 {
188 fMaterial = G4NistManager::Instance()->FindOrBuildMaterial(name);
189 if (fMaterial == nullptr) {
190 G4cout << G4endl << G4endl << "WARNING: the name of the material has not been recognized!"
191 << G4endl << " ===> the default * G4_Fe * will be used." << G4endl << G4endl;
192 fMaterial = G4NistManager::Instance()->FindOrBuildMaterial("G4_Fe");
193 }
194 if (fLogicSphere) fLogicSphere->SetMaterial(fMaterial);
195 // G4cout << " Absorber Material = " << logicSphere->GetMaterial()->GetName() << G4endl;
196 }
197
198 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
199
200 void DetectorConstruction::UpdateGeometry()
201 {
202 // G4cout << " BEGIN DetectorConstruction::UpdateGeometry" << G4endl;
203 G4RunManager::GetRunManager()->ReinitializeGeometry();
204 PrintParameters();
205 // Update also the position of the gun
206 const PrimaryGeneratorAction* pPrimaryAction = dynamic_cast<const PrimaryGeneratorAction*>(
207 G4RunManager::GetRunManager()->GetUserPrimaryGeneratorAction());
208 if (pPrimaryAction) pPrimaryAction->SetGunPosition();
209 // G4cout << " END DetectorConstruction::UpdateGeometry" << G4endl;
210 }
211
212 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
213
214 void DetectorConstruction::PrintParameters()
215 {
216 G4cout << G4endl << G4endl << " ------ DetectorConstruction::PrintParameters() ------ " << G4endl
217 << " Material = " << fMaterial->GetName() << G4endl
218 << " Radius = " << fRadius << " mm" << G4endl
219 << " ScoringThickness = " << fScoringThickness << " mm" << G4endl
220 << " -------------------------------------------------------- " << G4endl << G4endl;
221 }
222
223 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
224