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25 //
26 /// \file parallel/ThreadsafeScorers/src/TSDetectorConstruction.cc
27 /// \brief Implementation of the TSDetectorConstruction class
28 //
29 //
30 //
31 //
32 /// Construction of a target material (default = boron) surrounded by a
33 /// casing material (default = water) and a vacuum world (default =
34 /// target and casing fill world). The target + casing is brick
35 /// geometry with fTargetSections defining the number of divisions
36 /// in each dimension. The end sections in each dimension
37 /// is set to the casing. So a fTargetSections = G4ThreeVector(3, 3, 3)
38 /// would be one section of boron and 8 sections of water.
39 /// The idea behind this geometry is just to create a simple geometry that
40 /// scatters and produces a lot neutrons with a minimal number of sections
41 /// (i.e. coarse meshing) such that the contention in operating on
42 /// the atomic hits maps is higher and round-off errors in the
43 /// thread-local hits maps are detectable (printed out in TSRunAction)
44 /// from the sheer number of floating point sum operations.
45 /// Two scorers are implemented: EnergyDeposit and Number of steps
46 /// The energy deposit is to (possibly) show the round-off error seen
47 /// with thread-local hits maps. The # of steps scorer is to verify
48 /// the thread-safe and thread-local hits maps provide the same results.
49 //
50 //
51 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
52 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
53
54 #include "TSDetectorConstruction.hh"
55
56 #include "G4Box.hh"
57 #include "G4Colour.hh"
58 #include "G4LogicalVolume.hh"
59 #include "G4Material.hh"
60 #include "G4MultiFunctionalDetector.hh"
61 #include "G4NistManager.hh"
62 #include "G4PSEnergyDeposit.hh"
63 #include "G4PSNofStep.hh"
64 #include "G4PVPlacement.hh"
65 #include "G4RunManager.hh"
66 #include "G4SDManager.hh"
67 #include "G4UnitsTable.hh"
68 #include "G4UserLimits.hh"
69 #include "G4VPhysicalVolume.hh"
70 #include "G4VisAttributes.hh"
71
72 using namespace CLHEP;
73
74 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
75
76 TSDetectorConstruction* TSDetectorConstruction::fgInstance = 0;
77
78 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
79
80 TSDetectorConstruction* TSDetectorConstruction::Instance()
81 {
82 return fgInstance;
83 }
84
85 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
86
87 TSDetectorConstruction::TSDetectorConstruction()
88 : fWorldPhys(0),
89 fWorldMaterialName("G4_Galactic"),
90 fTargetMaterialName("G4_B"),
91 fCasingMaterialName("G4_WATER"),
92 fWorldDim(G4ThreeVector(0.5 * m, 0.5 * m, 0.5 * m)),
93 fTargetDim(G4ThreeVector(0.5 * m, 0.5 * m, 0.5 * m)),
94 fTargetSections(G4ThreeVector(5, 5, 5)),
95 fMfdName("Target_MFD")
96 {
97 fgInstance = this;
98 }
99
100 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
101
102 TSDetectorConstruction::~TSDetectorConstruction()
103 {
104 fgInstance = 0;
105 }
106
107 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
108
109 G4VPhysicalVolume* TSDetectorConstruction::Construct()
110 {
111 return ConstructWorld(ConstructMaterials());
112 }
113
114 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
115
116 TSDetectorConstruction::MaterialCollection_t TSDetectorConstruction::ConstructMaterials()
117 {
118 MaterialCollection_t materials;
119 G4NistManager* nist = G4NistManager::Instance();
120
121 materials["World"] = nist->FindOrBuildMaterial(fWorldMaterialName);
122 materials["Target"] = nist->FindOrBuildMaterial(fTargetMaterialName);
123 materials["Casing"] = nist->FindOrBuildMaterial(fCasingMaterialName);
124
125 return materials;
126 }
127
128 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
129
130 G4VPhysicalVolume* TSDetectorConstruction::ConstructWorld(const MaterialCollection_t& materials)
131 {
132 G4UserLimits* steplimit = new G4UserLimits(0.1 * (fTargetDim.z() / fTargetSections.z()));
133 G4bool check_overlap = false;
134
135 G4Box* world_solid =
136 new G4Box("World", 0.5 * fWorldDim.x(), 0.5 * fWorldDim.y(), 0.5 * fWorldDim.z());
137 G4LogicalVolume* world_log =
138 new G4LogicalVolume(world_solid, materials.find("World")->second, "World");
139 fWorldPhys =
140 new G4PVPlacement(0, G4ThreeVector(0.), "World", world_log, 0, false, 0, check_overlap);
141
142 G4int nz = fTargetSections.z();
143 G4int ny = fTargetSections.y();
144 G4int nx = fTargetSections.x();
145
146 // spacing between sections
147 G4double sx = fTargetDim.x() / fTargetSections.x();
148 G4double sy = fTargetDim.y() / fTargetSections.y();
149 G4double sz = fTargetDim.z() / fTargetSections.z();
150
151 // G4cout << "World has dimensions : "
152 //<< G4BestUnit(fWorldDim, "Length") << G4endl;
153
154 //------------------------------------------------------------------------//
155 // Set Visual Attributes
156 //------------------------------------------------------------------------//
157 G4VisAttributes* red = new G4VisAttributes(G4Color(1., 0., 0., 1.0));
158 G4VisAttributes* green = new G4VisAttributes(G4Color(0., 1., 0., 0.25));
159 G4VisAttributes* blue = new G4VisAttributes(G4Color(0., 0., 1., 0.1));
160 G4VisAttributes* white = new G4VisAttributes(G4Color(1., 1., 1., 1.));
161
162 white->SetVisibility(true);
163 red->SetVisibility(true);
164 green->SetVisibility(true);
165 blue->SetVisibility(true);
166
167 white->SetForceWireframe(true);
168 red->SetForceSolid(true);
169 green->SetForceSolid(true);
170 blue->SetForceSolid(true);
171
172 world_log->SetVisAttributes(white);
173
174 for (G4int k = 0; k < nz; ++k)
175 for (G4int j = 0; j < ny; ++j)
176 for (G4int i = 0; i < nx; ++i) {
177 // displacement of section
178 G4double dx = 0.5 * sx + static_cast<G4double>(i) * sx - 0.5 * fWorldDim.x();
179 G4double dy = 0.5 * sy + static_cast<G4double>(j) * sy - 0.5 * fWorldDim.y();
180 G4double dz = 0.5 * sz + static_cast<G4double>(k) * sz - 0.5 * fWorldDim.z();
181 G4ThreeVector td = G4ThreeVector(dx, dy, -dz);
182 // make unique name
183 std::stringstream ss_name;
184 ss_name << "Target_" << i << "_" << j << "_" << k;
185
186 G4Box* target_solid = new G4Box(ss_name.str(), 0.5 * sx, 0.5 * sy, 0.5 * sz);
187
188 G4Material* target_material = 0;
189 G4bool is_casing = true;
190
191 if (j == 0 || j + 1 == ny || i == 0 || i + 1 == nx || (nz > 1 && (k == 0 || k + 1 == nz)))
192 target_material = materials.find("Casing")->second;
193 else {
194 target_material = materials.find("Target")->second;
195 is_casing = false;
196 }
197
198 G4LogicalVolume* target_log =
199 new G4LogicalVolume(target_solid, target_material, ss_name.str());
200
201 target_log->SetUserLimits(steplimit);
202
203 new G4PVPlacement(0, td, ss_name.str(), target_log, fWorldPhys, true,
204 k * nx * ny + j * nx + i, check_overlap);
205
206 fScoringVolumes.insert(target_log);
207
208 if (is_casing)
209 target_log->SetVisAttributes(blue);
210 else {
211 // making a checkerboard for kicks...
212 G4bool even_z = (k % 2 == 0) ? true : false;
213 G4bool even_y = (j % 2 == 0) ? true : false;
214 G4bool even_x = (i % 2 == 0) ? true : false;
215
216 G4VisAttributes* theColor = nullptr;
217
218 if ((even_z)) {
219 if ((even_y && even_x) || (!even_y && !even_x))
220 theColor = red;
221 else
222 theColor = green;
223 }
224 else // ! even_z
225 {
226 if ((!even_y && even_x) || (even_y && !even_x))
227 theColor = red;
228 else
229 theColor = green;
230 }
231
232 target_log->SetVisAttributes(theColor);
233 }
234 }
235
236 return fWorldPhys;
237 }
238
239 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
240
241 void TSDetectorConstruction::ConstructSDandField()
242 {
243 //------------------------------------------------//
244 // MultiFunctionalDetector //
245 //------------------------------------------------//
246 // Define MultiFunctionalDetector with name.
247 G4MultiFunctionalDetector* MFDet = new G4MultiFunctionalDetector(fMfdName);
248 G4SDManager::GetSDMpointer()->AddNewDetector(MFDet);
249 G4VPrimitiveScorer* edep = new G4PSEnergyDeposit("EnergyDeposit");
250 MFDet->RegisterPrimitive(edep);
251 G4VPrimitiveScorer* nstep = new G4PSNofStep("NumberOfSteps");
252 MFDet->RegisterPrimitive(nstep);
253
254 // add scoring volumes
255 for (auto ite : fScoringVolumes) {
256 SetSensitiveDetector(ite, MFDet);
257 }
258 }
259
260 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
261