| 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 VG01DetectorConstruction.cc
28 /// \brief Implementation of the VG01DetectorConstruction class
29
30 // Authors: J. Apostolakis & S. Wenzel (CERN) 2018-2021
31 //
32 // Derived from FullCMS code by Mihaly Novak (2017-18)
33
34 #include "VG01DetectorConstruction.hh"
35
36 #include "G4VecGeomConverter.h"
37 #include "VG01DetectorMessenger.hh"
38
39 #include "G4FieldManager.hh"
40 #include "G4PropagatorInField.hh"
41 #include "G4RunManager.hh"
42 #include "G4SystemOfUnits.hh"
43 #include "G4TransportationManager.hh"
44 #include "G4UniformMagField.hh"
45 #include "G4VPhysicalVolume.hh"
46 #include "G4VisAttributes.hh"
47 #include "globals.hh"
48
49 #include <VecGeom/management/GeoManager.h>
50
51 G4double VG01DetectorConstruction::fglobFieldValue = 0.0;
52
53 VG01DetectorConstruction::VG01DetectorConstruction()
54 : G4VUserDetectorConstruction(),
55 fWorld(nullptr),
56 fFieldMgr(nullptr),
57 fUniformMagField(nullptr),
58 fDetectorMessenger(nullptr)
59 {
60 fGDMLFileName = "TestNTST.gdml";
61 fDetectorMessenger = new VG01DetectorMessenger(this);
62 }
63
64 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
65
66 VG01DetectorConstruction::~VG01DetectorConstruction()
67 {
68 delete fDetectorMessenger;
69 if (fUniformMagField) {
70 delete fUniformMagField;
71 }
72 }
73
74 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
75
76 G4VPhysicalVolume* VG01DetectorConstruction::Construct()
77 {
78 // parser.SetOverlapCheck(true);
79 G4TransportationManager* trMgr = G4TransportationManager::GetTransportationManager();
80 assert(trMgr);
81
82 fParser.Read(fGDMLFileName, false);
83 fWorld = (G4VPhysicalVolume*)fParser.GetWorldVolume();
84
85 // enabling 'check' mode in G4 Navigator
86 G4Navigator* nav = trMgr->GetNavigatorForTracking();
87 assert(nav);
88 nav->CheckMode(true);
89 // nav->SetVerboseLevel(1);
90 std::cout << "Enabled Check mode in G4Navigator";
91
92 // write back
93 // fParser.Write("out.gdml", fWorld);
94
95 fFieldMgr = trMgr->GetFieldManager();
96 fWorld->GetLogicalVolume()->SetVisAttributes(G4VisAttributes::GetInvisible());
97 if (fWorld == nullptr) {
98 G4ExceptionDescription ed;
99 ed << "World volume not set properly check your setup selection criteria"
100 << "or GDML input!" << G4endl;
101 G4Exception("VG01DetectorConstruction::Construct()", "G4VecGeomNavExtExample_0001",
102 FatalException, ed);
103 }
104 CreateMagFieldAndIntegrator();
105
106 if (fUseVecGeom) {
107 // This is converting the geometry to VecGeom and implicitely also setting
108 // the navigator; We should pull this out really
109 G4VecGeomConverter::Instance().SetVerbose(1);
110 G4VecGeomConverter::Instance().ConvertG4Geometry(fWorld);
111 G4cout << vecgeom::GeoManager::Instance().getMaxDepth() << "\n";
112 }
113 return fWorld;
114 }
115
116 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
117
118 void VG01DetectorConstruction::CreateMagFieldAndIntegrator()
119 {
120 delete fUniformMagField;
121
122 if (std::abs(fglobFieldValue) > 0.0) {
123 // Apply a global uniform magnetic field along the Z axis.
124 // Note: only when the magnetic field (pointer) is NOT zero,
125 // does the Geant4 transportion in field get activated.
126 fUniformMagField = new G4UniformMagField(G4ThreeVector(0.0, 0.0, fglobFieldValue));
127 fFieldMgr->SetDetectorField(fUniformMagField);
128 fFieldMgr->CreateChordFinder(fUniformMagField);
129 G4cout << G4endl << " *** SETTING MAGNETIC FIELD in Z direction : fieldValue = "
130 << fglobFieldValue / tesla << " tesla *** " << G4endl << G4endl;
131 }
132 else {
133 fFieldMgr->SetDetectorField(nullptr);
134 G4cout << G4endl << " *** NO MAGNETIC FIELD SET *** " << G4endl << G4endl;
135 }
136 }
137