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: G4Mag_SpinEqRhs.hh,v 1.11 2006/06/29 18:23:09 gunter Exp $ |
---|
28 | // GEANT4 tag $Name: geant4-09-02-cand-01 $ |
---|
29 | // |
---|
30 | // |
---|
31 | // class G4Mag_SpinEqRhs |
---|
32 | // |
---|
33 | // Class description: |
---|
34 | // |
---|
35 | // This is the equation of motion for a particle with spin in a pure |
---|
36 | // magnetic field. The three components of the particle's spin are |
---|
37 | // treated utilising BMT equation. |
---|
38 | |
---|
39 | // History: |
---|
40 | // - Created: J.Apostolakis, P.Gumplinger - February 8th, 1999. |
---|
41 | // -------------------------------------------------------------------- |
---|
42 | |
---|
43 | #ifndef G4MAG_SPIN_EQRHS |
---|
44 | #define G4MAG_SPIN_EQRHS |
---|
45 | |
---|
46 | #include "G4Types.hh" |
---|
47 | #include "G4Mag_EqRhs.hh" |
---|
48 | |
---|
49 | class G4MagneticField; |
---|
50 | |
---|
51 | class G4Mag_SpinEqRhs : public G4Mag_EqRhs |
---|
52 | { |
---|
53 | public: // with description |
---|
54 | |
---|
55 | G4Mag_SpinEqRhs( G4MagneticField* MagField ); |
---|
56 | ~G4Mag_SpinEqRhs(); |
---|
57 | // Constructor and destructor. No actions. |
---|
58 | |
---|
59 | void SetChargeMomentumMass(G4double particleCharge, // in e+ units |
---|
60 | G4double MomentumXc, |
---|
61 | G4double mass); |
---|
62 | |
---|
63 | void EvaluateRhsGivenB( const G4double y[], |
---|
64 | const G4double B[3], |
---|
65 | G4double dydx[] ) const; |
---|
66 | // Given the value of the magnetic field B, this function |
---|
67 | // calculates the value of the derivative dydx. |
---|
68 | |
---|
69 | inline void SetAnomaly(G4double a) { anomaly = a; } |
---|
70 | inline G4double GetAnomaly() const { return anomaly; } |
---|
71 | // set/get magnetic anomaly |
---|
72 | |
---|
73 | private: |
---|
74 | |
---|
75 | G4double omegac; |
---|
76 | G4double anomaly; |
---|
77 | G4double ParticleCharge; |
---|
78 | |
---|
79 | G4double E; |
---|
80 | G4double gamma; |
---|
81 | G4double beta; |
---|
82 | }; |
---|
83 | |
---|
84 | #endif /* G4MAG_SPIN_EQRHS */ |
---|