G4ErrorMag_UsualEqRhs Class Reference

#include <G4ErrorMag_UsualEqRhs.hh>

Inheritance diagram for G4ErrorMag_UsualEqRhs:

Public Member Functions
	G4ErrorMag_UsualEqRhs (G4MagneticField *MagField)
	~G4ErrorMag_UsualEqRhs ()
void	EvaluateRhsGivenB (const G4double y[], const G4double B[3], G4double dydx[]) const
Public Member Functions inherited from G4Mag_UsualEqRhs
	G4Mag_UsualEqRhs (G4MagneticField *MagField)
virtual	~G4Mag_UsualEqRhs ()
void	EvaluateRhsGivenB (const G4double y[], const G4double B[3], G4double dydx[]) const
virtual void	SetChargeMomentumMass (G4ChargeState particleCharge, G4double MomentumXc, G4double mass)
Public Member Functions inherited from G4Mag_EqRhs
	G4Mag_EqRhs (G4MagneticField *magField)
virtual	~G4Mag_EqRhs ()
G4double	FCof () const
Public Member Functions inherited from G4EquationOfMotion
	G4EquationOfMotion (G4Field *Field)
virtual	~G4EquationOfMotion ()
void	RightHandSide (const G4double y[], G4double dydx[]) const
void	EvaluateRhsReturnB (const G4double y[], G4double dydx[], G4double Field[]) const
void	GetFieldValue (const G4double Point[4], G4double Field[]) const
const G4Field *	GetFieldObj () const
void	SetFieldObj (G4Field *pField)

Detailed Description

Definition at line 49 of file G4ErrorMag_UsualEqRhs.hh.

Constructor & Destructor Documentation

G4ErrorMag_UsualEqRhs::G4ErrorMag_UsualEqRhs

(

G4MagneticField *

MagField

)

Definition at line 39 of file G4ErrorMag_UsualEqRhs.cc.

  : G4Mag_UsualEqRhs( MagField )
{
}

G4ErrorMag_UsualEqRhs::~G4ErrorMag_UsualEqRhs

(

)

Definition at line 44 of file G4ErrorMag_UsualEqRhs.cc.

{
}

Member Function Documentation

void G4ErrorMag_UsualEqRhs::EvaluateRhsGivenB ( const G4double  y[], const G4double  B[3], G4double  dydx[]  ) const

virtual

Implements G4Mag_EqRhs.

Definition at line 50 of file G4ErrorMag_UsualEqRhs.cc.

References G4Mag_UsualEqRhs::EvaluateRhsGivenB(), G4Mag_EqRhs::FCof(), G4ErrorMode_PropBackwards, G4ErrorPropagatorData::GetErrorPropagatorData(), and sqr().

{

  G4Mag_UsualEqRhs::EvaluateRhsGivenB(y, B, dydx );
  
  if(G4ErrorPropagatorData::GetErrorPropagatorData()->GetMode()
     == G4ErrorMode_PropBackwards)
  {
    G4double momentum_mag_square = sqr(y[3]) + sqr(y[4]) + sqr(y[5]);
    G4double inv_momentum_magnitude = 1.0 / std::sqrt( momentum_mag_square );
    
    G4double cof = FCof()*inv_momentum_magnitude;

    dydx[3] = cof*(y[4]*(-B[2]) - y[5]*(-B[1])) ;
    dydx[4] = cof*(y[5]*(-B[0]) - y[3]*(-B[2])) ;
    dydx[5] = cof*(y[3]*(-B[1]) - y[4]*(-B[0])) ;    
  }
  return;
}

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

• G4ErrorMag_UsualEqRhs.hh
• G4ErrorMag_UsualEqRhs.cc