| Geant4 Cross Reference |
1 //
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25 //
26 // History :
27 // 21/10/2021 : DLa update to modify the material and the size
28 // -------------------------------------------------------------------
29 // -------------------------------------------------------------------
30
31 #include "DetectorConstruction.hh"
32 #include "DetectorMessenger.hh"
33 #include "G4SystemOfUnits.hh"
34 #include "G4Region.hh"
35 #include "G4ProductionCuts.hh"
36 #include "G4RunManager.hh"
37
38 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
39
40 DetectorConstruction::DetectorConstruction()
41 :G4VUserDetectorConstruction(), fPhysiWorld(nullptr), fLogicWorld(nullptr), fSolidWorld(nullptr), fWorldMaterial(nullptr), flogicTarget(nullptr), ftargetSolid(nullptr), fMaterial(nullptr), fRegion(nullptr)
42 {
43 fBoxSize = 1.0*um;
44 DefineMaterials();
45 SetMaterial("G4_Si");
46 fDetectorMessenger = new DetectorMessenger(this);
47 }
48
49 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
50
51 DetectorConstruction::~DetectorConstruction()
52 {
53 delete fPhysiWorld;
54 delete fLogicWorld;
55 delete fSolidWorld;
56 //delete fWorldMaterial; // no delete because link to database
57 delete flogicTarget;
58 delete ftargetSolid;
59 delete fMaterial;
60 delete fRegion;
61 delete fDetectorMessenger;
62 }
63
64 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
65
66 G4VPhysicalVolume* DetectorConstruction::Construct()
67
68 {
69 DefineMaterials();
70 return ConstructDetector();
71 }
72
73 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
74
75 void DetectorConstruction::DefineMaterials()
76 {
77
78 // Silicon is defined from NIST material database
79 G4NistManager * man = G4NistManager::Instance();
80 fMaterial = man->FindOrBuildMaterial("G4_Si");
81 fWorldMaterial = man->FindOrBuildMaterial("G4_Si"); // world material;
82
83 }
84
85 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
86
87
88
89 void DetectorConstruction::SetMaterial(const G4String& materialChoice)
90 {
91 // search the material by its name
92 G4Material* pttoMaterial =
93 G4NistManager::Instance()->FindOrBuildMaterial(materialChoice);
94
95 if (pttoMaterial) {
96 fMaterial = pttoMaterial;
97 if ( flogicTarget ) { flogicTarget->SetMaterial(fMaterial); }
98 } else {
99 G4cout << "\n--> warning from DetectorConstruction::SetMaterial : "
100 << materialChoice << " not found" << G4endl;
101 }
102 G4RunManager::GetRunManager()->PhysicsHasBeenModified();
103 }
104
105 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
106
107
108 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
109 G4VPhysicalVolume* DetectorConstruction::ConstructDetector()
110 {
111
112
113 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
114
115 // WORLD VOLUME
116
117
118 G4double TargetSizeX = 1*um;
119 G4double TargetSizeY = TargetSizeX;
120 G4double TargetSizeZ = TargetSizeX;
121 fBoxSize = TargetSizeX;
122
123 fWorldSizeX = TargetSizeX*2;
124 fWorldSizeY = TargetSizeY*2;
125 fWorldSizeZ = TargetSizeZ*2;
126
127 fSolidWorld = new G4Box("World", //its name
128 fWorldSizeX/2,fWorldSizeY/2,fWorldSizeZ/2); //its size
129
130
131 fLogicWorld = new G4LogicalVolume(fSolidWorld, //its solid
132 fWorldMaterial, //its material
133 "World"); //its name
134
135 fPhysiWorld = new G4PVPlacement(0, //no rotation
136 G4ThreeVector(), //at (0,0,0)
137 "World", //its name
138 fLogicWorld, //its logical volume
139 0, //its mother volume
140 false, //no boolean operation
141 0); //copy number
142
143
144
145 ftargetSolid = new G4Box("Target", //its name
146 TargetSizeX/2,TargetSizeY/2,TargetSizeZ/2); //its size
147
148
149 flogicTarget = new G4LogicalVolume(ftargetSolid, //its solid
150 fMaterial, //its material
151 "Target"); //its name
152
153 new G4PVPlacement(0, //no rotation
154 G4ThreeVector(), //at (0,0,0)
155 "Target", //its name
156 flogicTarget, //its logical volume
157 fPhysiWorld, //its mother volume
158 false, //no boolean operation
159 0); //copy number
160
161 // Visualization attributes
162 G4VisAttributes* worldVisAtt= new G4VisAttributes(G4Colour(1.0,1.0,1.0)); //White
163 worldVisAtt->SetVisibility(true);
164 fLogicWorld->SetVisAttributes(worldVisAtt);
165
166 G4VisAttributes* worldVisAtt1 = new G4VisAttributes(G4Colour(1.0,0.0,0.0));
167 worldVisAtt1->SetVisibility(true);
168 flogicTarget->SetVisAttributes(worldVisAtt1);
169
170 // Create Target G4Region and add logical volume
171
172 fRegion = new G4Region("Target");
173
174 G4ProductionCuts* cuts = new G4ProductionCuts();
175
176 G4double defCut = 1*nanometer;
177 cuts->SetProductionCut(defCut,"gamma");
178 cuts->SetProductionCut(defCut,"e-");
179 cuts->SetProductionCut(defCut,"e+");
180 cuts->SetProductionCut(defCut,"proton");
181
182 fRegion->SetProductionCuts(cuts);
183 fRegion->AddRootLogicalVolume(flogicTarget);
184
185 return fPhysiWorld;
186 }
187
188
189 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
190
191 void DetectorConstruction::SetSize(G4double value)
192 {
193 fBoxSize = value;
194 if(ftargetSolid) {
195 ftargetSolid->SetXHalfLength(fBoxSize/2);
196 ftargetSolid->SetYHalfLength(fBoxSize/2);
197 ftargetSolid->SetZHalfLength(fBoxSize/2);
198 }
199 fWorldSizeX = value*2.0;
200 fWorldSizeY = value*2.0;
201 fWorldSizeZ = value*2.0;
202
203 if(fSolidWorld) {
204 fSolidWorld->SetXHalfLength(fWorldSizeX/2);
205 fSolidWorld->SetYHalfLength(fWorldSizeY/2);
206 fSolidWorld->SetZHalfLength(fWorldSizeZ/2);
207 }
208
209 }
210
211