Geant4  10.02
G4ExactHelixStepper.hh
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26 // $Id: G4ExactHelixStepper.hh 66356 2012-12-18 09:02:32Z gcosmo $
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28 //
29 // class G4ExactHelixStepper
30 // -------------------
31 // Class description:
32 //
33 // Concrete class for particle motion in constant magnetic field.
34 
35 // History:
36 // - 28.Jan.05 J.Apostolakis Creation of new concrete class
37 // --------------------------------------------------------------------
38 
39 #ifndef G4ExactHelixStepper_hh
40 #define G4ExactHelixStepper_hh
41 
42 #include "G4Types.hh"
43 #include "G4ThreeVector.hh"
44 
46 #include "G4MagHelicalStepper.hh"
47 #include "G4Mag_EqRhs.hh"
48 
50 {
51  public: // with description
52 
55 
56  void Stepper( const G4double y[],
57  const G4double dydx[],
58  G4double h,
59  G4double yout[],
60  G4double yerr[] );
61  // Step 'integration' for step size 'h'
62  // Provides helix starting at y[0 to 6]
63  // Outputs yout[] and ZERO estimated error yerr[]=0.
64 
65  void DumbStepper( const G4double y[],
66  G4ThreeVector Bfld,
67  G4double h,
68  G4double yout[] );
69  // Performs a 'dump' Step without error calculation.
70 
71  G4double DistChord() const;
72  // Estimate maximum distance of curved solution and chord ...
73 
74  virtual G4int IntegratorOrder() const;
75 
76  private:
77 
80  // Private copy constructor and assignment operator.
81 
82  private:
83 
85  // Initial value of field at last step
87 };
88 
89 
90 
91 #endif /* G4ExactHelixStepper_hh */
void Stepper(const G4double y[], const G4double dydx[], G4double h, G4double yout[], G4double yerr[])
CLHEP::Hep3Vector G4ThreeVector
G4double DistChord() const
int G4int
Definition: G4Types.hh:78
G4Mag_EqRhs * fPtrMagEqOfMot
virtual G4int IntegratorOrder() const
G4ExactHelixStepper & operator=(const G4ExactHelixStepper &)
void DumbStepper(const G4double y[], G4ThreeVector Bfld, G4double h, G4double yout[])
double G4double
Definition: G4Types.hh:76
G4ExactHelixStepper(G4Mag_EqRhs *EqRhs)