source: trunk/source/geometry/magneticfield/test/field03/src/F03ElectroMagneticField.cc@ 1311

Last change on this file since 1311 was 1199, checked in by garnier, 16 years ago

nvx fichiers dans CVS
File size: 8.8 KB
RevLine 
[1199]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// $Id: F03ElectroMagneticField.cc,v 1.2 2006/06/29 18:30:05 gunter Exp $
28// GEANT4 tag $Name: HEAD $
29//
30//
31// User Field class implementation.
32//
33
34
35#include "F03ElectroMagneticField.hh"
36#include "F03FieldMessenger.hh"
37
38#include "G4UniformMagField.hh"
39#include "G4MagneticField.hh"
40#include "G4FieldManager.hh"
41#include "G4TransportationManager.hh"
42#include "G4Mag_UsualEqRhs.hh"
43#include "G4MagIntegratorStepper.hh"
44#include "G4ChordFinder.hh"
45
46#include "G4ExplicitEuler.hh"
47#include "G4ImplicitEuler.hh"
48#include "G4SimpleRunge.hh"
49#include "G4SimpleHeum.hh"
50#include "G4ClassicalRK4.hh"
51#include "G4HelixExplicitEuler.hh"
52#include "G4HelixImplicitEuler.hh"
53#include "G4HelixSimpleRunge.hh"
54#include "G4CashKarpRKF45.hh"
55#include "G4RKG3_Stepper.hh"
56
57//////////////////////////////////////////////////////////////////////////
58//
59// Constructors:
60
61F03ElectroMagneticField::F03ElectroMagneticField()
62 : fStepper(NULL),fChordFinder(NULL),fLocalChordFinder(NULL)
63{
64 fMagneticField = new G4UniformMagField(
65 G4ThreeVector(3.3*tesla,
66 0.0, // 0.5*tesla,
67 0.0 ));
68 fLocalMagneticField = new G4UniformMagField(
69 G4ThreeVector(3.3*tesla,
70 0.0, // 0.5*tesla,
71 0.0 ));
72
73 // G4FieldManager* fieldMgr = G4TransportationManager::GetTransportationManager()
74 // ->GetFieldManager();
75 // fieldMgr->SetDetectorField(fMagneticField);
76 // fieldMgr->CreateChordFinder(fMagneticField);
77
78 fFieldMessenger = new F03FieldMessenger(this) ;
79
80 fEquation = new G4Mag_UsualEqRhs(fMagneticField);
81 fLocalEquation = new G4Mag_UsualEqRhs(fLocalMagneticField);
82
83 fMinStep = 1.0*mm ; // minimal step of 1 mm is default
84
85 fStepperType = 4 ; // ClassicalRK4 is default stepper
86
87 fFieldManager = G4TransportationManager::GetTransportationManager()
88 ->GetFieldManager();
89
90 fLocalFieldManager = G4TransportationManager::GetTransportationManager()
91 ->GetFieldManager();
92
93 UpdateField();
94
95 // GetGlobalFieldManager()->CreateChordFinder(this);
96}
97
98/////////////////////////////////////////////////////////////////////////////////
99
100F03ElectroMagneticField::F03ElectroMagneticField(G4ThreeVector fieldVector)
101{
102 fMagneticField = new G4UniformMagField(fieldVector);
103 GetGlobalFieldManager()->CreateChordFinder(this);
104}
105
106////////////////////////////////////////////////////////////////////////////////
107
108F03ElectroMagneticField::~F03ElectroMagneticField()
109{
110 // GetGlobalFieldManager()->SetDetectorField(0);
111
112 if(fMagneticField) delete fMagneticField;
113 if(fChordFinder) delete fChordFinder;
114 if(fStepper) delete fStepper;
115}
116
117/////////////////////////////////////////////////////////////////////////////
118//
119// Update field
120//
121
122void F03ElectroMagneticField::UpdateField()
123{
124 SetStepper();
125 G4cout<<"The minimal step is equal to "<<fMinStep/mm<<" mm"<<G4endl ;
126
127 fFieldManager->SetDetectorField(fMagneticField );
128 fLocalFieldManager->SetDetectorField(fLocalMagneticField );
129
130 if(fChordFinder) delete fChordFinder;
131 if(fLocalChordFinder) delete fLocalChordFinder;
132
133 fChordFinder = new G4ChordFinder( fMagneticField, fMinStep,fStepper);
134 fLocalChordFinder = new G4ChordFinder( fLocalMagneticField,
135 fMinStep,fLocalStepper);
136
137 fFieldManager->SetChordFinder( fChordFinder );
138 fLocalFieldManager->SetChordFinder( fLocalChordFinder );
139
140 return;
141}
142
143/////////////////////////////////////////////////////////////////////////////
144//
145// Set stepper according to the stepper type
146//
147
148void F03ElectroMagneticField::SetStepper()
149{
150 if(fStepper) delete fStepper;
151
152 switch ( fStepperType )
153 {
154 case 0:
155 fStepper = new G4ExplicitEuler( fEquation );
156 fLocalStepper = new G4ExplicitEuler( fLocalEquation );
157 G4cout<<"G4ExplicitEuler is calledS"<<G4endl;
158 break;
159 case 1:
160 fStepper = new G4ImplicitEuler( fEquation );
161 fLocalStepper = new G4ImplicitEuler( fLocalEquation );
162 G4cout<<"G4ImplicitEuler is called"<<G4endl;
163 break;
164 case 2:
165 fStepper = new G4SimpleRunge( fEquation );
166 fLocalStepper = new G4SimpleRunge( fLocalEquation );
167 G4cout<<"G4SimpleRunge is called"<<G4endl;
168 break;
169 case 3:
170 fStepper = new G4SimpleHeum( fEquation );
171 fLocalStepper = new G4SimpleHeum( fLocalEquation );
172 G4cout<<"G4SimpleHeum is called"<<G4endl;
173 break;
174 case 4:
175 fStepper = new G4ClassicalRK4( fEquation );
176 fLocalStepper = new G4ClassicalRK4( fLocalEquation );
177 G4cout<<"G4ClassicalRK4 (default) is called"<<G4endl;
178 break;
179 case 5:
180 fStepper = new G4HelixExplicitEuler( fEquation );
181 fLocalStepper = new G4HelixExplicitEuler( fLocalEquation );
182 G4cout<<"G4HelixExplicitEuler is called"<<G4endl;
183 break;
184 case 6:
185 fStepper = new G4HelixImplicitEuler( fEquation );
186 fLocalStepper = new G4HelixImplicitEuler( fLocalEquation );
187 G4cout<<"G4HelixImplicitEuler is called"<<G4endl;
188 break;
189 case 7:
190 fStepper = new G4HelixSimpleRunge( fEquation );
191 fLocalStepper = new G4HelixSimpleRunge( fLocalEquation );
192 G4cout<<"G4HelixSimpleRunge is called"<<G4endl;
193 break;
194 case 8:
195 fStepper = new G4CashKarpRKF45( fEquation );
196 fLocalStepper = new G4CashKarpRKF45( fLocalEquation );
197 G4cout<<"G4CashKarpRKF45 is called"<<G4endl;
198 break;
199 case 9:
200 fStepper = new G4RKG3_Stepper( fEquation );
201 fLocalStepper = new G4RKG3_Stepper( fLocalEquation );
202 G4cout<<"G4RKG3_Stepper is called"<<G4endl;
203 break;
204 default: fStepper = 0;
205 }
206 return;
207}
208
209/////////////////////////////////////////////////////////////////////////////
210//
211// Set the value of the Global Field to fieldValue along Z
212//
213
214void F03ElectroMagneticField::SetFieldValue(G4double fieldValue)
215{
216 if(fMagneticField) delete fMagneticField;
217 fMagneticField = new G4UniformMagField(G4ThreeVector(0,0,fieldValue));
218 // UpdateField();
219}
220
221///////////////////////////////////////////////////////////////////////////////
222//
223// Set the value of the Global Field
224//
225
226void F03ElectroMagneticField::SetFieldValue(G4ThreeVector fieldVector)
227{
228 // Find the Field Manager for the global field
229 G4FieldManager* fieldMgr= GetGlobalFieldManager();
230
231 if(fieldVector != G4ThreeVector(0.,0.,0.))
232 {
233 if(fMagneticField) delete fMagneticField;
234 fMagneticField = new G4UniformMagField(fieldVector);
235
236 // UpdateField();
237
238 fieldMgr->SetDetectorField(this);
239 }
240 else
241 {
242 // If the new field's value is Zero, then it is best to
243 // insure that it is not used for propagation.
244
245 G4MagneticField* fMagneticField = NULL;
246 fieldMgr->SetDetectorField(fMagneticField);
247 }
248}
249
250////////////////////////////////////////////////////////////////////////////////
251//
252// Utility method
253
254G4FieldManager* F03ElectroMagneticField::GetGlobalFieldManager()
255{
256 return G4TransportationManager::GetTransportationManager()
257 ->GetFieldManager();
258}
259
260
261
262
Note: See TracBrowser for help on using the repository browser.