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: G4HelixHeum.hh,v 1.8 2006/06/29 18:22:36 gunter Exp $ |
---|
28 | // GEANT4 tag $Name: geant4-09-02-cand-01 $ |
---|
29 | // |
---|
30 | // |
---|
31 | // class G4HelixHeum |
---|
32 | // |
---|
33 | // Class description: |
---|
34 | // |
---|
35 | // Simple Heum stepper for magnetic field: |
---|
36 | // x_1 = x_0 + |
---|
37 | // h * 1/4 * dx(t0,x0) + |
---|
38 | // 3/4 * dx(t0+2/3*h, x0+2/3*h*(dx(t0+h/3,x0+h/3*dx(t0,x0)))) |
---|
39 | // Third order solver. |
---|
40 | |
---|
41 | // History: |
---|
42 | // - Created. W.Wander <wwc@mit.edu>, 03/11/98 |
---|
43 | // ------------------------------------------------------------------- |
---|
44 | |
---|
45 | #ifndef G4HELIXHEUM_HH |
---|
46 | #define G4HELIXHEUM_HH |
---|
47 | |
---|
48 | #include "G4MagHelicalStepper.hh" |
---|
49 | |
---|
50 | class G4HelixHeum : public G4MagHelicalStepper |
---|
51 | { |
---|
52 | |
---|
53 | public: // with description |
---|
54 | |
---|
55 | G4HelixHeum(G4Mag_EqRhs *EqRhs) |
---|
56 | : G4MagHelicalStepper(EqRhs) {} |
---|
57 | |
---|
58 | ~G4HelixHeum() {} |
---|
59 | |
---|
60 | void DumbStepper( const G4double y[], |
---|
61 | G4ThreeVector Bfld, |
---|
62 | G4double h, |
---|
63 | G4double yout[]); |
---|
64 | |
---|
65 | public: // without description |
---|
66 | |
---|
67 | G4int IntegratorOrder() const { return 2; } |
---|
68 | }; |
---|
69 | |
---|
70 | #endif /* G4HELIXHEUM_HH */ |
---|