G4HelixImplicitEuler Class Reference

#include <G4HelixImplicitEuler.hh>

Inheritance diagram for G4HelixImplicitEuler:

Collaboration diagram for G4HelixImplicitEuler:

Public Member Functions
	G4HelixImplicitEuler (G4Mag_EqRhs *EqRhs)
	~G4HelixImplicitEuler ()
void	DumbStepper (const G4double y[], G4ThreeVector Bfld, G4double h, G4double yout[])
G4int	IntegratorOrder () const
Public Member Functions inherited from G4MagHelicalStepper
	G4MagHelicalStepper (G4Mag_EqRhs *EqRhs)
virtual	~G4MagHelicalStepper ()
virtual void	Stepper (const G4double y[], const G4double dydx[], G4double h, G4double yout[], G4double yerr[])
G4double	DistChord () const
Public Member Functions inherited from G4MagIntegratorStepper
	G4MagIntegratorStepper (G4EquationOfMotion *Equation, G4int numIntegrationVariables, G4int numStateVariables=12, bool isFSAL=false)
virtual	~G4MagIntegratorStepper ()
virtual void	ComputeRightHandSide (const G4double y[], G4double dydx[])
void	NormaliseTangentVector (G4double vec[6])
void	NormalisePolarizationVector (G4double vec[12])
void	RightHandSide (const double y[], double dydx[])
G4int	GetNumberOfVariables () const
G4int	GetNumberOfStateVariables () const
G4int	IntegrationOrder ()
G4EquationOfMotion *	GetEquationOfMotion ()
void	SetEquationOfMotion (G4EquationOfMotion *newEquation)
unsigned long	GetfNoRHSCalls ()
void	ResetfNORHSCalls ()
bool	IsFSAL ()

Additional Inherited Members
Protected Member Functions inherited from G4MagHelicalStepper
void	LinearStep (const G4double yIn[], G4double h, G4double yHelix[]) const
void	AdvanceHelix (const G4double yIn[], G4ThreeVector Bfld, G4double h, G4double yHelix[], G4double yHelix2[]=0)
void	MagFieldEvaluate (const G4double y[], G4ThreeVector &Bfield)
G4double	GetInverseCurve (const G4double Momentum, const G4double Bmag)
void	SetAngCurve (const G4double Ang)
G4double	GetAngCurve () const
void	SetCurve (const G4double Curve)
G4double	GetCurve () const
void	SetRadHelix (const G4double Rad)
G4double	GetRadHelix () const
Protected Member Functions inherited from G4MagIntegratorStepper
void	SetIntegrationOrder (int order)
void	SetFSAL (bool flag=true)

Detailed Description

Definition at line 51 of file G4HelixImplicitEuler.hh.

Constructor & Destructor Documentation

G4HelixImplicitEuler::G4HelixImplicitEuler ( G4Mag_EqRhs *  EqRhs )

inline

Definition at line 56 of file G4HelixImplicitEuler.hh.

      : G4MagHelicalStepper(EqRhs) {}

G4HelixImplicitEuler::~G4HelixImplicitEuler ( )

inline

Definition at line 59 of file G4HelixImplicitEuler.hh.

{}

Member Function Documentation

void G4HelixImplicitEuler::DumbStepper ( const G4double  y[], G4ThreeVector  Bfld, G4double  h, G4double  yout[]  )

virtual

Implements G4MagHelicalStepper.

Definition at line 46 of file G4HelixImplicitEuler.cc.

{
  const G4int nvar = 6 ;
  G4double yTemp[6], yTemp2[6];
  G4ThreeVector Bfld_endpoint;

  G4int i;

  // Step forward like in the explicit euler case
  AdvanceHelix( yIn, Bfld, h, yTemp);

  // now obtain the new field value at the new point
  MagFieldEvaluate(yTemp, Bfld_endpoint);      

  // and also advance along a helix for this field value
  AdvanceHelix( yIn, Bfld_endpoint, h, yTemp2);

  // we take the average 
  for( i = 0; i < nvar; i++ ) 
    yOut[i] = 0.5 * ( yTemp[i] + yTemp2[i] );

  // NormaliseTangentVector( yOut );           
}  

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G4int G4HelixImplicitEuler::IntegratorOrder ( ) const

inlinevirtual

Implements G4MagIntegratorStepper.

Definition at line 68 of file G4HelixImplicitEuler.hh.

{ return 2; }

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The documentation for this class was generated from the following files:

• geant4.10.03.p01/source/geometry/magneticfield/include/G4HelixImplicitEuler.hh
• geant4.10.03.p01/source/geometry/magneticfield/src/G4HelixImplicitEuler.cc