| Geant4 Cross Reference |
1 //
2 // ********************************************************************
3 // * License and Disclaimer *
4 // * *
5 // * The Geant4 software is copyright of the Copyright Holders of *
6 // * the Geant4 Collaboration. It is provided under the terms and *
7 // * conditions of the Geant4 Software License, included in the file *
8 // * LICENSE and available at http://cern.ch/geant4/license . These *
9 // * include a list of copyright holders. *
10 // * *
11 // * Neither the authors of this software system, nor their employing *
12 // * institutes,nor the agencies providing financial support for this *
13 // * work make any representation or warranty, express or implied, *
14 // * regarding this software system or assume any liability for its *
15 // * use. Please see the license in the file LICENSE and URL above *
16 // * for the full disclaimer and the limitation of liability. *
17 // * *
18 // * This code implementation is the result of the scientific and *
19 // * technical work of the GEANT4 collaboration. *
20 // * By using, copying, modifying or distributing the software (or *
21 // * any work based on the software) you agree to acknowledge its *
22 // * use in resulting scientific publications, and indicate your *
23 // * acceptance of all terms of the Geant4 Software license. *
24 // ********************************************************************
25 //
26 //
27 /// \file field/field05/src/F05DetectorConstruction.cc
28 /// \brief Implementation of the F05DetectorConstruction class
29 //
30
31 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
32 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
33
34 #include "F05DetectorConstruction.hh"
35
36 #include "F05Field.hh"
37
38 #include "G4Box.hh"
39 #include "G4Colour.hh"
40 #include "G4FieldManager.hh"
41 #include "G4GeometryManager.hh"
42 #include "G4LogicalVolume.hh"
43 #include "G4LogicalVolumeStore.hh"
44 #include "G4Material.hh"
45 #include "G4NistManager.hh"
46 #include "G4PVPlacement.hh"
47 #include "G4PhysicalVolumeStore.hh"
48 #include "G4SolidStore.hh"
49 #include "G4SystemOfUnits.hh"
50 #include "G4TransportationManager.hh"
51 #include "G4UserLimits.hh"
52 #include "G4VisAttributes.hh"
53
54 // #include "G4RepleteEofM.hh"
55 #include "G4ChordFinder.hh"
56 #include "G4ClassicalRK4.hh"
57 #include "G4EqEMFieldWithSpin.hh"
58 #include "G4MagIntegratorStepper.hh"
59 #include "G4PropagatorInField.hh"
60
61 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
62
63 F05DetectorConstruction::F05DetectorConstruction() : fVacuum(nullptr)
64 {
65 // materials
66 DefineMaterials();
67 }
68
69 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
70
71 F05DetectorConstruction::~F05DetectorConstruction()
72 {
73 delete fField;
74 }
75
76 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
77
78 void F05DetectorConstruction::DefineMaterials()
79 {
80 G4NistManager* nistMan = G4NistManager::Instance();
81
82 fVacuum = nistMan->FindOrBuildMaterial("G4_Galactic");
83
84 G4cout << *(G4Material::GetMaterialTable()) << G4endl;
85 }
86
87 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
88
89 G4VPhysicalVolume* F05DetectorConstruction::Construct()
90 {
91 //
92 // World
93 //
94
95 G4double worldSizeXY = 20.0 * m;
96 G4double worldSizeZ = 1.0 * mm;
97
98 auto solidWorld = new G4Box("World", // its name
99 worldSizeXY / 2, worldSizeXY / 2, worldSizeZ / 2); // its size
100
101 auto logicWorld = new G4LogicalVolume(solidWorld, // its solid
102 fVacuum, // its material
103 "World"); // its name
104
105 auto physiWorld = new G4PVPlacement(nullptr, // no rotation
106 G4ThreeVector(), // at (0,0,0)
107 logicWorld, // its logical volume
108 "World", // its name
109 nullptr, // its mother volume
110 false, // no boolean operation
111 0); // copy number
112
113 G4UserLimits* stepLimit;
114 stepLimit = new G4UserLimits(5 * mm);
115
116 logicWorld->SetUserLimits(stepLimit);
117
118 //
119 // Visualization attributes
120 //
121 // fLogicWorld->SetVisAttributes (G4VisAttributes::GetInvisible());
122
123 //
124 // always return the physical World
125 //
126 return physiWorld;
127 }
128
129 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
130
131 G4ThreadLocal F05Field* F05DetectorConstruction::fField = nullptr;
132
133 void F05DetectorConstruction::ConstructSDandField()
134
135 {
136 if (!fField) {
137 fField = new F05Field();
138
139 // G4RepleteEofM* equation = new G4RepleteEofM(fField);
140 auto equation = new G4EqEMFieldWithSpin(fField);
141 // equation->SetBField();
142 // equation->SetEField();
143 // equation->SetSpin();
144
145 G4FieldManager* fieldManager =
146 G4TransportationManager::GetTransportationManager()->GetFieldManager();
147 fieldManager->SetDetectorField(fField);
148
149 G4MagIntegratorStepper* stepper = new G4ClassicalRK4(equation, 12);
150
151 G4double minStep = 0.01 * mm;
152
153 auto chordFinder = new G4ChordFinder((G4MagneticField*)fField, minStep, stepper);
154
155 // Set accuracy parameters
156 G4double deltaChord = 3.0 * mm;
157 chordFinder->SetDeltaChord(deltaChord);
158
159 // Maximum allowed integration error in one integration sub-step
160 G4double deltaOneStep = 0.01 * mm;
161 fieldManager->SetAccuraciesWithDeltaOneStep(deltaOneStep);
162
163 G4double deltaIntersection = 0.1 * mm;
164 fieldManager->SetDeltaIntersection(deltaIntersection);
165
166 G4TransportationManager* transportManager = G4TransportationManager::GetTransportationManager();
167
168 G4PropagatorInField* fieldPropagator = transportManager->GetPropagatorInField();
169
170 // Limits for relative accuracy of integration
171 G4double epsMin = 2.5e-7;
172 G4double epsMax = 0.001;
173
174 fieldPropagator->SetMinimumEpsilonStep(epsMin);
175 fieldPropagator->SetMaximumEpsilonStep(epsMax);
176
177 fieldManager->SetChordFinder(chordFinder);
178 }
179 }
180
181 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
182