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25 //
26 /// \file exoticphysics/dmparticle/src/DetectorConstruction.cc
27 /// \brief Implementation of the DetectorConstruction class
28 //
29 //
30 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
31 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
32
33 #include "DetectorConstruction.hh"
34
35 #include "DetectorMessenger.hh"
36 #include "TargetSD.hh"
37
38 #include "G4Box.hh"
39 #include "G4FieldManager.hh"
40 #include "G4GeometryManager.hh"
41 #include "G4LogicalVolume.hh"
42 #include "G4Material.hh"
43 #include "G4NistManager.hh"
44 #include "G4PVPlacement.hh"
45 #include "G4RunManager.hh"
46 #include "G4SDManager.hh"
47 #include "G4SystemOfUnits.hh"
48 #include "G4ThreeVector.hh"
49 #include "G4UnitsTable.hh"
50
51 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
52
53 DetectorConstruction::DetectorConstruction()
54 : G4VUserDetectorConstruction(), fAbsorMaterial(nullptr), fLogAbsor(nullptr), fWorld(nullptr)
55 {
56 // default parameter values
57 fAbsorSizeZ = fAbsorSizeXY = 10 * cm;
58 fWorldSizeZ = fWorldSizeXY = 1.2 * fAbsorSizeZ;
59
60 SetMaterial("G4_Al");
61 fWorldMaterial = G4NistManager::Instance()->FindOrBuildMaterial("G4_Galactic");
62
63 // create commands for interactive definition of the detector
64 fDetectorMessenger = new DetectorMessenger(this);
65 }
66
67 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
68
69 DetectorConstruction::~DetectorConstruction()
70 {
71 delete fDetectorMessenger;
72 }
73
74 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
75
76 G4VPhysicalVolume* DetectorConstruction::Construct()
77 {
78 if (fWorld) {
79 return fWorld;
80 }
81
82 /**************************** World *****************************/
83 G4Box* sWorld = new G4Box("world", fWorldSizeXY / 2, fWorldSizeXY / 2, fWorldSizeZ / 2);
84
85 G4LogicalVolume* lWorld = new G4LogicalVolume(sWorld, fWorldMaterial, "world");
86
87 fWorld = new G4PVPlacement(0, // no rotation
88 G4ThreeVector(), // at (0,0,0)
89 lWorld, // logical volume
90 "world", // name
91 0, // mother volume
92 false, // no boolean operation
93 0); // copy number
94
95 /************************** Absorber ***************************/
96
97 G4Box* sAbsor = new G4Box("Absorber", fAbsorSizeXY / 2, fAbsorSizeXY / 2, fAbsorSizeZ / 2);
98
99 fLogAbsor = new G4LogicalVolume(sAbsor, fAbsorMaterial, "Absorber");
100
101 new G4PVPlacement(0, // no rotation
102 G4ThreeVector(), // at (0,0,0)
103 fLogAbsor, // logical volume
104 "Absorber", // name
105 lWorld, // mother volume
106 false, // no boolean operation
107 0); // copy number
108
109 PrintParameters();
110
111 /************ always return the World volume *****************/
112 return fWorld;
113 }
114
115 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
116
117 void DetectorConstruction::PrintParameters()
118 {
119 G4cout << "\n---------------------------------------------------------\n";
120 G4cout << "---> The Absorber is " << G4BestUnit(fAbsorSizeZ, "Length") << " of "
121 << fAbsorMaterial->GetName() << G4endl;
122 G4cout << "\n---------------------------------------------------------\n";
123 }
124
125 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
126
127 void DetectorConstruction::SetSizeZ(G4double value)
128 {
129 if (value > 0.0) {
130 fAbsorSizeZ = value;
131 fWorldSizeZ = 1.2 * fAbsorSizeZ;
132 }
133 }
134
135 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
136
137 void DetectorConstruction::SetSizeXY(G4double value)
138 {
139 if (value > 0.0) {
140 fAbsorSizeXY = value;
141 fWorldSizeXY = 1.2 * fAbsorSizeXY;
142 }
143 }
144
145 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
146
147 void DetectorConstruction::SetMaterial(const G4String& namemat)
148 {
149 // search the material by its name
150
151 G4Material* mat = G4NistManager::Instance()->FindOrBuildMaterial(namemat);
152 if (!mat) {
153 G4cout << "!!! DetectorConstruction::SetMaterial: WARNING Material <" << namemat
154 << "> does not exist in DB" << G4endl;
155 return;
156 }
157 // new material is found out
158 if (mat != fAbsorMaterial) {
159 fAbsorMaterial = mat;
160 if (fLogAbsor) {
161 fLogAbsor->SetMaterial(mat);
162 }
163 G4RunManager::GetRunManager()->PhysicsHasBeenModified();
164 }
165 }
166
167 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
168
169 void DetectorConstruction::ConstructSDandField()
170 {
171 auto sd = new TargetSD("Target");
172 G4SDManager::GetSDMpointer()->AddNewDetector(sd);
173 SetSensitiveDetector(fLogAbsor, sd);
174 }
175
176 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
177