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G4HelixImplicitEuler.hh
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//
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// ********************************************************************
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// * License and Disclaimer *
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// * the Geant4 Collaboration. It is provided under the terms and *
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// * Neither the authors of this software system, nor their employing *
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// ********************************************************************
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//
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//
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// $Id: G4HelixImplicitEuler.hh 66356 2012-12-18 09:02:32Z gcosmo $
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//
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//
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// class G4HelixImplicitEuler
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//
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// Class description:
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//
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// Helix Implicit Euler stepper for magnetic field:
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// x_1 = x_0 + 1/2 * ( helix(h,t_0,x_0)
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// + helix(h,t_0+h,x_0+helix(h,t0,x0) ) )
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// Second order solver.
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// Take the current derivative and add it to the current position.
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// Take the output and its derivative. Add the mean of both derivatives
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// to form the final output.
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// History:
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// - Created. W.Wander <wwc@mit.edu>, 03/11/98
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// -------------------------------------------------------------------
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#ifndef G4HELIXIMPLICITEULER_HH
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#define G4HELIXIMPLICITEULER_HH
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#include "
G4MagHelicalStepper.hh
"
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class
G4HelixImplicitEuler
:
public
G4MagHelicalStepper
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{
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public
:
// with description
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G4HelixImplicitEuler
(
G4Mag_EqRhs
*EqRhs)
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:
G4MagHelicalStepper
(EqRhs) {}
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~G4HelixImplicitEuler
() {}
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void
DumbStepper
(
const
G4double
y[],
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G4ThreeVector
Bfld,
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G4double
h,
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G4double
yout[]);
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public
:
// without description
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G4int
IntegratorOrder
()
const
{
return
2; }
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};
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#endif
/* G4HELIXIMPLICITEULER_HH */
G4ThreeVector
CLHEP::Hep3Vector G4ThreeVector
Definition:
G4ThreeVector.hh:42
G4HelixImplicitEuler::~G4HelixImplicitEuler
~G4HelixImplicitEuler()
Definition:
G4HelixImplicitEuler.hh:59
G4int
int G4int
Definition:
G4Types.hh:78
G4HelixImplicitEuler::G4HelixImplicitEuler
G4HelixImplicitEuler(G4Mag_EqRhs *EqRhs)
Definition:
G4HelixImplicitEuler.hh:56
G4HelixImplicitEuler
Definition:
G4HelixImplicitEuler.hh:51
G4HelixImplicitEuler::DumbStepper
void DumbStepper(const G4double y[], G4ThreeVector Bfld, G4double h, G4double yout[])
Definition:
G4HelixImplicitEuler.cc:46
G4MagHelicalStepper.hh
G4MagHelicalStepper
Definition:
G4MagHelicalStepper.hh:53
G4Mag_EqRhs
Definition:
G4Mag_EqRhs.hh:49
G4double
double G4double
Definition:
G4Types.hh:76
G4HelixImplicitEuler::IntegratorOrder
G4int IntegratorOrder() const
Definition:
G4HelixImplicitEuler.hh:68
geant4.10.00.p02
source
geometry
magneticfield
include
G4HelixImplicitEuler.hh
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