G4EqMagElectricField Class Reference

#include <G4EqMagElectricField.hh>

Inheritance diagram for G4EqMagElectricField:

Public Member Functions
	G4EqMagElectricField (G4ElectroMagneticField *emField)
	~G4EqMagElectricField ()
void	SetChargeMomentumMass (G4ChargeState particleCharge, G4double MomentumXc, G4double mass)
void	EvaluateRhsGivenB (const G4double y[], const G4double Field[], G4double dydx[]) const
Public Member Functions inherited from G4EquationOfMotion
	G4EquationOfMotion (G4Field *Field)
virtual	~G4EquationOfMotion ()
virtual void	EvaluateRhsGivenB (const G4double y[], const G4double B[3], G4double dydx[]) const =0
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 48 of file G4EqMagElectricField.hh.

Constructor & Destructor Documentation

G4EqMagElectricField::G4EqMagElectricField ( G4ElectroMagneticField *  emField )

inline

Definition at line 52 of file G4EqMagElectricField.hh.

      : G4EquationOfMotion( emField ) {;}

G4EqMagElectricField::~G4EqMagElectricField ( )

inline

Definition at line 55 of file G4EqMagElectricField.hh.

{;} 

Member Function Documentation

void G4EqMagElectricField::EvaluateRhsGivenB	(	const G4double	y[],
		const G4double	Field[],
		G4double	dydx[]
	)		const

Definition at line 58 of file G4EqMagElectricField.cc.

References python.hepunit::c_light.

{

   // Components of y:
   //    0-2 dr/ds, 
   //    3-5 dp/ds - momentum derivatives 

   G4double pSquared = y[3]*y[3] + y[4]*y[4] + y[5]*y[5] ;

   G4double Energy   = std::sqrt( pSquared + fMassCof );
   G4double cof2     = Energy/c_light ;

   G4double pModuleInverse  = 1.0/std::sqrt(pSquared) ;

   //  G4double inverse_velocity = Energy * c_light * pModuleInverse;
   G4double inverse_velocity = Energy * pModuleInverse / c_light;

   G4double cof1     = fElectroMagCof*pModuleInverse ;

   //  G4double vDotE = y[3]*Field[3] + y[4]*Field[4] + y[5]*Field[5] ;


   dydx[0] = y[3]*pModuleInverse ;                         
   dydx[1] = y[4]*pModuleInverse ;                         
   dydx[2] = y[5]*pModuleInverse ;                        

   dydx[3] = cof1*(cof2*Field[3] + (y[4]*Field[2] - y[5]*Field[1])) ;
   
   dydx[4] = cof1*(cof2*Field[4] + (y[5]*Field[0] - y[3]*Field[2])) ; 
 
   dydx[5] = cof1*(cof2*Field[5] + (y[3]*Field[1] - y[4]*Field[0])) ;  

   dydx[6] = 0.;//not used

   // Lab Time of flight
   dydx[7] = inverse_velocity;
   return ;
}

void G4EqMagElectricField::SetChargeMomentumMass ( G4ChargeState  particleCharge, G4double  MomentumXc, G4double  mass  )

virtual

Implements G4EquationOfMotion.

Definition at line 46 of file G4EqMagElectricField.cc.

References python.hepunit::c_light, python.hepunit::eplus, and G4ChargeState::GetCharge().

{
   G4double pcharge = particleCharge.GetCharge();
   fElectroMagCof =  eplus*pcharge*c_light ;
   fMassCof = particleMass*particleMass ; 
}

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

• G4EqMagElectricField.hh
• G4EqMagElectricField.cc