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25 //
26 /// \file electromagnetic/TestEm2/src/DetectorConstruction.cc
27 /// \brief Implementation of the DetectorConstruction class
28 //
29 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
30 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
31
32 #include "DetectorConstruction.hh"
33
34 #include "DetectorMessenger.hh"
35
36 #include "G4AutoDelete.hh"
37 #include "G4GeometryManager.hh"
38 #include "G4GlobalMagFieldMessenger.hh"
39 #include "G4LogicalVolume.hh"
40 #include "G4LogicalVolumeStore.hh"
41 #include "G4NistManager.hh"
42 #include "G4PVPlacement.hh"
43 #include "G4PhysicalVolumeStore.hh"
44 #include "G4RunManager.hh"
45 #include "G4SolidStore.hh"
46 #include "G4SystemOfUnits.hh"
47 #include "G4Tubs.hh"
48 #include "G4UnitsTable.hh"
49
50 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
51
52 DetectorConstruction::DetectorConstruction()
53 {
54 DefineMaterials();
55 SetMaterial("G4_PbWO4");
56 fDetectorMessenger = new DetectorMessenger(this);
57 }
58
59 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
60
61 DetectorConstruction::~DetectorConstruction()
62 {
63 delete fDetectorMessenger;
64 }
65
66 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
67
68 void DetectorConstruction::DefineMaterials()
69 {
70 //
71 // define few Elements by hand
72 //
73 G4double a, z;
74
75 G4Element* H = new G4Element("Hydrogen", "H", z = 1., a = 1.01 * g / mole);
76 G4Element* O = new G4Element("Oxygen", "O", z = 8., a = 16.00 * g / mole);
77 G4Element* Ge = new G4Element("Germanium", "Ge", z = 32., a = 72.59 * g / mole);
78 G4Element* Bi = new G4Element("Bismuth", "Bi", z = 83., a = 208.98 * g / mole);
79
80 //
81 // define materials
82 //
83 G4double density;
84 G4int ncomponents, natoms;
85
86 // water with ionisation potential 78 eV
87 G4Material* H2O = new G4Material("Water", density = 1.00 * g / cm3, ncomponents = 2);
88 H2O->AddElement(H, natoms = 2);
89 H2O->AddElement(O, natoms = 1);
90 H2O->GetIonisation()->SetMeanExcitationEnergy(78.0 * eV);
91
92 // pure materails
93 new G4Material("liquidArgon", z = 18., a = 39.95 * g / mole, density = 1.390 * g / cm3);
94 new G4Material("Aluminium", z = 13., a = 26.98 * g / mole, density = 2.7 * g / cm3);
95 new G4Material("Iron", z = 26., a = 55.85 * g / mole, density = 7.87 * g / cm3);
96 new G4Material("Copper", z = 29., a = 63.55 * g / mole, density = 8.960 * g / cm3);
97 new G4Material("Tungsten", z = 74., a = 183.84 * g / mole, density = 19.35 * g / cm3);
98 new G4Material("Lead", z = 82., a = 207.19 * g / mole, density = 11.35 * g / cm3);
99 new G4Material("Uranium", z = 92., a = 238.03 * g / mole, density = 18.95 * g / cm3);
100
101 // compound material
102 G4Material* BGO = new G4Material("BGO", density = 7.10 * g / cm3, ncomponents = 3);
103 BGO->AddElement(O, natoms = 12);
104 BGO->AddElement(Ge, natoms = 3);
105 BGO->AddElement(Bi, natoms = 4);
106
107 ////G4cout << *(G4Material::GetMaterialTable()) << G4endl;
108 }
109
110 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
111
112 void DetectorConstruction::UpdateParameters()
113 {
114 G4double Radl = fMaterial->GetRadlen();
115 fDLlength = fDLradl * Radl;
116 fDRlength = fDRradl * Radl;
117 fEcalLength = fNLtot * fDLlength;
118 fEcalRadius = fNRtot * fDRlength;
119 if (fSolidEcal) {
120 fSolidEcal->SetOuterRadius(fEcalRadius);
121 fSolidEcal->SetZHalfLength(0.5 * fEcalLength);
122 }
123 }
124
125 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
126
127 G4VPhysicalVolume* DetectorConstruction::Construct()
128 {
129 UpdateParameters();
130 //
131 // Ecal
132 //
133 if (!fPhysiEcal) {
134 fSolidEcal = new G4Tubs("Ecal", 0., fEcalRadius, 0.5 * fEcalLength, 0., 360 * deg);
135 fLogicEcal = new G4LogicalVolume(fSolidEcal, fMaterial, "Ecal", 0, 0, 0);
136 fPhysiEcal = new G4PVPlacement(0, G4ThreeVector(), fLogicEcal, "Ecal", 0, false, 0);
137 }
138 G4cout << "\n Absorber is " << G4BestUnit(fEcalLength, "Length") << " of " << fMaterial->GetName()
139 << " R= " << fEcalRadius / cm << " cm \n"
140 << G4endl;
141 G4cout << fMaterial << G4endl;
142 //
143 // always return the physical World
144 //
145 return fPhysiEcal;
146 }
147
148 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
149
150 void DetectorConstruction::SetMaterial(const G4String& materialChoice)
151 {
152 // search the material by its name
153 G4Material* pttoMaterial = G4NistManager::Instance()->FindOrBuildMaterial(materialChoice);
154
155 if (pttoMaterial && fMaterial != pttoMaterial) {
156 fMaterial = pttoMaterial;
157 if (fLogicEcal) {
158 fLogicEcal->SetMaterial(fMaterial);
159 }
160 G4RunManager::GetRunManager()->PhysicsHasBeenModified();
161 }
162 }
163
164 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
165
166 void DetectorConstruction::SetLBining(G4ThreeVector Value)
167 {
168 fNLtot = (G4int)Value(0);
169 if (fNLtot > kMaxBin) {
170 G4cout << "\n ---> warning from SetLBining: " << fNLtot << " truncated to " << kMaxBin
171 << G4endl;
172 fNLtot = kMaxBin;
173 }
174 fDLradl = Value(1);
175 UpdateParameters();
176 }
177
178 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
179
180 void DetectorConstruction::SetRBining(G4ThreeVector Value)
181 {
182 fNRtot = (G4int)Value(0);
183 if (fNRtot > kMaxBin) {
184 G4cout << "\n ---> warning from SetRBining: " << fNRtot << " truncated to " << kMaxBin
185 << G4endl;
186 fNRtot = kMaxBin;
187 }
188 fDRradl = Value(1);
189 UpdateParameters();
190 }
191
192 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
193
194 void DetectorConstruction::ConstructSDandField()
195 {
196 if (fFieldMessenger.Get() == nullptr) {
197 // Create global magnetic field messenger.
198 // Uniform magnetic field is then created automatically if
199 // the field value is not zero.
200 G4ThreeVector fieldValue = G4ThreeVector();
201 G4GlobalMagFieldMessenger* msg = new G4GlobalMagFieldMessenger(fieldValue);
202 // msg->SetVerboseLevel(1);
203 G4AutoDelete::Register(msg);
204 fFieldMessenger.Put(msg);
205 }
206 }
207
208 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
209