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25 //
26 /// \file exoticphysics/monopole/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
37 #include "G4Box.hh"
38 #include "G4GeometryManager.hh"
39 #include "G4LogicalVolume.hh"
40 #include "G4LogicalVolumeStore.hh"
41 #include "G4Material.hh"
42 #include "G4MonopoleFieldSetup.hh"
43 #include "G4NistManager.hh"
44 #include "G4PVPlacement.hh"
45 #include "G4PhysicalVolumeStore.hh"
46 #include "G4SolidStore.hh"
47 #include "G4StateManager.hh"
48 #include "G4UniformMagField.hh"
49 #include "G4UnitsTable.hh"
50 #include "G4UserLimits.hh"
51 // #include "G4FieldManager.hh"
52 // #include "G4TransportationManager.hh"
53 #include "G4AutoDelete.hh"
54 #include "G4GlobalMagFieldMessenger.hh"
55 #include "G4RunManager.hh"
56 #include "G4SystemOfUnits.hh"
57 #include "G4ThreeVector.hh"
58
59 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
60
61 DetectorConstruction::DetectorConstruction()
62 : G4VUserDetectorConstruction(),
63 fWorldMaterial(0),
64 fAbsorMaterial(0),
65 fLogAbsor(0),
66 fMonFieldSetup(),
67 fDetectorMessenger(0)
68 {
69 // default parameter values
70 fAbsorSizeX = fAbsorSizeYZ = 10 * cm;
71 fWorldSizeX = fWorldSizeYZ = 1.2 * fAbsorSizeX;
72 fMaxStepSize = 5 * mm;
73
74 SetMaterial("G4_Al");
75 fWorldMaterial = G4NistManager::Instance()->FindOrBuildMaterial("G4_Galactic");
76
77 // create commands for interactive definition of the detector
78 fDetectorMessenger = new DetectorMessenger(this);
79 }
80
81 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
82
83 DetectorConstruction::~DetectorConstruction()
84 {
85 delete fDetectorMessenger;
86 // delete fMonFieldSetup;
87 }
88
89 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
90
91 G4VPhysicalVolume* DetectorConstruction::Construct()
92 {
93 G4GeometryManager::GetInstance()->OpenGeometry();
94 G4PhysicalVolumeStore::GetInstance()->Clean();
95 G4LogicalVolumeStore::GetInstance()->Clean();
96 G4SolidStore::GetInstance()->Clean();
97
98 /**************************** World *****************************/
99 G4Box* sWorld = new G4Box("world", fWorldSizeX / 2, fWorldSizeYZ / 2, fWorldSizeYZ / 2);
100
101 G4LogicalVolume* lWorld = new G4LogicalVolume(sWorld, fWorldMaterial, "world");
102
103 G4VPhysicalVolume* pWorld = new G4PVPlacement(0, // no rotation
104 G4ThreeVector(), // at (0,0,0)
105 lWorld, // logical volume
106 "world", // name
107 0, // mother volume
108 false, // no boolean operation
109 0); // copy number
110
111 /************************** Absorber ***************************/
112 G4Box* sAbsor = new G4Box("Absorber", fAbsorSizeX / 2, fAbsorSizeYZ / 2, fAbsorSizeYZ / 2);
113
114 fLogAbsor = new G4LogicalVolume(sAbsor, fAbsorMaterial, "Absorber");
115
116 new G4PVPlacement(0, // no rotation
117 G4ThreeVector(), // at (0,0,0)
118 fLogAbsor, // logical volume
119 "Absorber", // name
120 lWorld, // mother volume
121 false, // no boolean operation
122 0); // copy number
123 fLogAbsor->SetUserLimits(new G4UserLimits(fMaxStepSize));
124
125 PrintParameters();
126
127 /************ always return the World volume *****************/
128 return pWorld;
129 }
130
131 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
132
133 void DetectorConstruction::PrintParameters()
134 {
135 G4cout << "\n---------------------------------------------------------\n";
136 G4cout << "---> The Absorber is " << G4BestUnit(fAbsorSizeX, "Length") << " of "
137 << fAbsorMaterial->GetName() << G4endl;
138 G4cout << "\n---------------------------------------------------------\n";
139 }
140
141 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
142
143 void DetectorConstruction::SetSizeX(G4double value)
144 {
145 if (value > 0.0) {
146 fAbsorSizeX = value;
147 fWorldSizeX = 1.2 * fAbsorSizeX;
148 if (G4StateManager::GetStateManager()->GetCurrentState() != G4State_PreInit) {
149 G4RunManager::GetRunManager()->ReinitializeGeometry();
150 }
151 }
152 }
153
154 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
155
156 void DetectorConstruction::SetSizeYZ(G4double value)
157 {
158 if (value > 0.0) {
159 fAbsorSizeYZ = value;
160 fWorldSizeYZ = 1.2 * fAbsorSizeYZ;
161 if (G4StateManager::GetStateManager()->GetCurrentState() != G4State_PreInit) {
162 G4RunManager::GetRunManager()->ReinitializeGeometry();
163 }
164 }
165 }
166
167 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
168
169 void DetectorConstruction::SetMaterial(const G4String& namemat)
170 {
171 // search the material by its name
172 G4Material* mat = G4NistManager::Instance()->FindOrBuildMaterial(namemat);
173 if (!mat) {
174 G4cout << "!!! DetectorConstruction::SetMaterial: WARNING Material <" << namemat
175 << "> does not exist in DB" << G4endl;
176 return;
177 }
178 // new material is found out
179 if (mat != fAbsorMaterial) {
180 fAbsorMaterial = mat;
181 if (fLogAbsor) {
182 fLogAbsor->SetMaterial(mat);
183 }
184 G4RunManager::GetRunManager()->PhysicsHasBeenModified();
185 }
186 }
187
188 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.....
189
190 void DetectorConstruction::ConstructSDandField()
191 {
192 // Define magnetic field
193 if (!fMonFieldSetup.Get()) {
194 G4MonopoleFieldSetup* fieldSetup = new G4MonopoleFieldSetup();
195 G4AutoDelete::Register(fieldSetup); // Kernel will delete the F01FieldSetup
196 fMonFieldSetup.Put(fieldSetup);
197 }
198 fMonFieldSetup.Get()->ConstructMagField(); // add field value
199 }
200
201 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
202
203 void DetectorConstruction::SetMaxStepSize(G4double step)
204 {
205 fMaxStepSize = step;
206 if (fLogAbsor) {
207 fLogAbsor->SetUserLimits(new G4UserLimits(fMaxStepSize));
208 }
209 }
210
211 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
212