G4MonopoleEq Class Reference

#include <G4MonopoleEq.hh>

Inheritance diagram for G4MonopoleEq:

Public Member Functions
	G4MonopoleEq (G4ElectroMagneticField *emField)
	~G4MonopoleEq ()
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 49 of file G4MonopoleEq.hh.

Constructor & Destructor Documentation

G4MonopoleEq::G4MonopoleEq ( G4ElectroMagneticField *  emField )

inline

Definition at line 53 of file G4MonopoleEq.hh.

      : G4EquationOfMotion( emField ) {;}

G4MonopoleEq::~G4MonopoleEq ( )

inline

Definition at line 56 of file G4MonopoleEq.hh.

{;} 

Member Function Documentation

void G4MonopoleEq::EvaluateRhsGivenB	(	const G4double	y[],
		const G4double	Field[],
		G4double	dydx[]
	)		const

Definition at line 59 of file G4MonopoleEq.cc.

References python.hepunit::c_light.

{

   // Components of y:
   //    0-2 dr/ds, 
   //    3-5 d(pc)/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[0] - (y[4]*Field[5] - y[5]*Field[4])) ;
   
   dydx[4] = cof1*(cof2*Field[1] - (y[5]*Field[3] - y[3]*Field[5])) ; 
 
   dydx[5] = cof1*(cof2*Field[2] - (y[3]*Field[4] - y[4]*Field[3])) ;  

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

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

void G4MonopoleEq::SetChargeMomentumMass ( G4ChargeState  particleCharge, G4double  MomentumXc, G4double  mass  )

virtual

Implements G4EquationOfMotion.

Definition at line 45 of file G4MonopoleEq.cc.

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

{
  G4double pcharge = particleCharge.GetCharge();
  fElectroMagCof =  eplus*pcharge;  // no *c_light as for ususal q
  fElectroMagCof /= 2*fine_structure_const;

  fMassCof = particleMass*particleMass ; 
}

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

• G4MonopoleEq.hh
• G4MonopoleEq.cc