Geant4_10
G4HelixSimpleRunge.hh
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27 // $Id: G4HelixSimpleRunge.hh 66356 2012-12-18 09:02:32Z gcosmo $
28 //
29 //
30 // class G4HelixSimpleRunge
31 //
32 // Class description:
33 //
34 // Helix Simple Runge-Kutta stepper for magnetic field:
35 // x_1 = x_0 + h * ( dx( t_0+h/2, x_0 + h/2 * dx( t_0, x_0) ) )
36 //
37 // Second order solver.
38 // Take the derivative at a position to be assumed at the middle of the
39 // Step and add it to the current position.
40 
41 // W. Wander <wwc@mit.edu> 03/12/98
42 // -------------------------------------------------------------------
43 
44 #ifndef G4HELIXSIMPLERUNGE_HH
45 #define G4HELIXSIMPLERUNGE_HH
46 #include "G4MagHelicalStepper.hh"
47 
49 {
50  public: // with description
51 
53  : G4MagHelicalStepper(EqRhs){}
54 
56 
57  void DumbStepper( const G4double y[],
58  G4ThreeVector Bfld,
59  G4double h,
60  G4double yout[]);
61 
62  public: // without description
63 
64  G4int IntegratorOrder() const { return 2; }
65 };
66 
67 #endif /* G4HELIXSIMPLERUNGE_HH */
int G4int
Definition: G4Types.hh:78
Double_t y
Definition: plot.C:279
G4int IntegratorOrder() const
void DumbStepper(const G4double y[], G4ThreeVector Bfld, G4double h, G4double yout[])
G4HelixSimpleRunge(G4Mag_EqRhs *EqRhs)
double G4double
Definition: G4Types.hh:76