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25 //
26 /// \file electromagnetic/TestEm16/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 "G4GDMLParser.hh"
39 #include "G4GeometryManager.hh"
40 #include "G4LogicalVolume.hh"
41 #include "G4LogicalVolumeStore.hh"
42 #include "G4Material.hh"
43 #include "G4PVPlacement.hh"
44 #include "G4PhysicalVolumeStore.hh"
45 #include "G4PropagatorInField.hh"
46 #include "G4RunManager.hh"
47 #include "G4SolidStore.hh"
48 #include "G4SystemOfUnits.hh"
49 #include "G4TransportationManager.hh"
50 #include "G4UnitsTable.hh"
51 #include "G4UserLimits.hh"
52
53 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
54
55 DetectorConstruction::DetectorConstruction() : G4VUserDetectorConstruction(), fBoxSize(500 * m)
56 {
57 DefineMaterials();
58 SetMaterial("Iron");
59
60 // create UserLimits
61 fUserLimits = new G4UserLimits();
62
63 // create commands for interactive definition of the detector
64 fDetectorMessenger = new DetectorMessenger(this);
65 }
66
67 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
68
69 G4VPhysicalVolume* DetectorConstruction::Construct()
70 {
71 return ConstructVolumes();
72 }
73
74 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
75
76 void DetectorConstruction::DefineMaterials()
77 {
78 G4double a, z, density;
79
80 new G4Material("Beryllium", z = 4., a = 9.012182 * g / mole, density = 1.848 * g / cm3);
81 new G4Material("Carbon", z = 6., a = 12.011 * g / mole, density = 2.265 * g / cm3);
82 new G4Material("Iron", z = 26., a = 55.85 * g / mole, density = 7.870 * g / cm3);
83
84 // define a vacuum with a restgas pressure typical for accelerators
85 G4double const Torr = atmosphere / 760.; // 1 Torr
86 G4double pressure = 10e-9 * Torr,
87 temperature = 296.150 * kelvin; // 23 Celsius
88 new G4Material("Vacuum", z = 7., a = 14.01 * g / mole, density = 1.516784e-11 * kg / m3,
89 kStateGas, temperature, pressure);
90 G4cout << *(G4Material::GetMaterialTable()) << G4endl; // print the materials defined
91 }
92
93 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
94
95 G4VPhysicalVolume* DetectorConstruction::ConstructVolumes()
96 {
97 G4GeometryManager::GetInstance()->OpenGeometry();
98 G4PhysicalVolumeStore::GetInstance()->Clean();
99 G4LogicalVolumeStore::GetInstance()->Clean();
100 G4SolidStore::GetInstance()->Clean();
101
102 if (fGeomFileName == G4String()) {
103 auto sBox = new G4Box("Container", fBoxSize / 2, fBoxSize / 2, fBoxSize / 2);
104 fLBox = new G4LogicalVolume(sBox, fMaterial, fMaterial->GetName());
105 fLBox->SetUserLimits(fUserLimits);
106 fBox = new G4PVPlacement(0, G4ThreeVector(), fLBox, fMaterial->GetName(), 0, false, 0);
107 PrintParameters();
108 }
109 else {
110 G4GDMLParser parser;
111 std::size_t nmat = G4Material::GetNumberOfMaterials();
112 parser.Read(fGeomFileName.c_str()); // volumes and materials
113 if (G4Material::GetNumberOfMaterials() > nmat) {
114 const std::vector<G4Material*> MatPtrVec = *G4Material::GetMaterialTable();
115 if (G4Material::GetNumberOfMaterials() > nmat)
116 G4cout << "Materials defined by " << fGeomFileName << " :" << G4endl;
117 for (std::size_t imat = nmat; imat < MatPtrVec.size(); ++imat)
118 G4cout << MatPtrVec[imat] << G4endl;
119 }
120 fBox = parser.GetWorldVolume();
121 }
122 return fBox;
123 }
124
125 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
126
127 void DetectorConstruction::PrintParameters()
128 {
129 G4cout << "\n The Box is " << G4BestUnit(fBoxSize, "Length") << " of " << fMaterial->GetName()
130 << G4endl;
131 }
132
133 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
134
135 void DetectorConstruction::SetMaterial(G4String materialChoice)
136 {
137 // search the material by its name
138 G4Material* pttoMaterial = G4Material::GetMaterial(materialChoice);
139 if (pttoMaterial) {
140 fMaterial = pttoMaterial;
141 if (fLBox) fLBox->SetMaterial(fMaterial);
142 }
143 G4RunManager::GetRunManager()->PhysicsHasBeenModified();
144 }
145
146 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
147
148 void DetectorConstruction::SetSize(G4double value)
149 {
150 fBoxSize = value;
151 G4RunManager::GetRunManager()->ReinitializeGeometry();
152 }
153
154 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
155
156 #include "G4AutoDelete.hh"
157 #include "G4GlobalMagFieldMessenger.hh"
158
159 void DetectorConstruction::ConstructSDandField()
160 {
161 if (fFieldMessenger.Get() == 0) {
162 // Create global magnetic field messenger.
163 // Uniform magnetic field is then created automatically if
164 // the field value is not zero.
165 G4ThreeVector fieldValue = G4ThreeVector();
166 auto msg = new G4GlobalMagFieldMessenger(fieldValue);
167 // msg->SetVerboseLevel(1);
168 G4AutoDelete::Register(msg);
169 fFieldMessenger.Put(msg);
170 }
171 }
172
173 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
174
175 void DetectorConstruction::SetMaxStepSize(G4double val)
176 {
177 // set the maximum allowed step size
178 //
179 if (val <= DBL_MIN) {
180 G4cout << "\n --->warning from SetMaxStepSize: maxStep " << val
181 << " out of range. Command refused" << G4endl;
182 return;
183 }
184 fUserLimits->SetMaxAllowedStep(val);
185 }
186
187 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
188
189 void DetectorConstruction::SetMaxStepLength(G4double val)
190 {
191 // set the maximum length of tracking step
192 //
193 if (val <= DBL_MIN) {
194 G4cout << "\n --->warning from SetMaxStepLength: maxStep " << val
195 << " out of range. Command refused" << G4endl;
196 return;
197 }
198 G4TransportationManager* tmanager = G4TransportationManager::GetTransportationManager();
199 tmanager->GetPropagatorInField()->SetLargestAcceptableStep(val);
200 }
201
202 void DetectorConstruction::SetGeomFileName(G4String GeomFileName)
203 {
204 fGeomFileName = GeomFileName;
205 }
206
207 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
208