G4MonopoleEq Class Reference

#include <G4MonopoleEq.hh>

Inheritance diagram for G4MonopoleEq:

Public Member Functions
virtual void	EvaluateRhsGivenB (const G4double y[], const G4double B[3], G4double dydx[]) const =0
void	EvaluateRhsGivenB (const G4double y[], const G4double Field[], G4double dydx[]) const
void	EvaluateRhsReturnB (const G4double y[], G4double dydx[], G4double Field[]) const
	G4MonopoleEq (G4ElectroMagneticField *emField)
G4Field *	GetFieldObj ()
const G4Field *	GetFieldObj () const
void	GetFieldValue (const G4double Point[4], G4double Field[]) const
void	RightHandSide (const G4double y[], G4double dydx[]) const
void	SetChargeMomentumMass (G4ChargeState particleCharge, G4double MomentumXc, G4double mass)
void	SetFieldObj (G4Field *pField)
	~G4MonopoleEq ()

Private Attributes
G4double	fElectroMagCof = 0.0
G4double	fMassCof = 0.0
G4Field *	itsField = nullptr

Detailed Description

Definition at line 43 of file G4MonopoleEq.hh.

Constructor & Destructor Documentation

G4MonopoleEq()

G4MonopoleEq::G4MonopoleEq

(

G4ElectroMagneticField *

emField

)

Definition at line 36 of file G4MonopoleEq.cc.

  : G4EquationOfMotion( emField )
{
}

~G4MonopoleEq()

G4MonopoleEq::~G4MonopoleEq

(

)

Definition at line 41 of file G4MonopoleEq.cc.

{
} 

Member Function Documentation

EvaluateRhsGivenB() [1/2]

virtual void G4EquationOfMotion::EvaluateRhsGivenB ( const G4double  y[], const G4double  B[3], G4double  dydx[]  ) const

pure virtualinherited

Implemented in G4ErrorMag_UsualEqRhs, G4Mag_SpinEqRhs, G4Mag_UsualEqRhs, G4KM_NucleonEqRhs, G4KM_OpticalEqRhs, and G4Mag_EqRhs.

Referenced by G4RKG3_Stepper::StepNoErr(), and G4RKG3_Stepper::Stepper().

EvaluateRhsGivenB() [2/2]

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

Definition at line 58 of file G4MonopoleEq.cc.

{
 
   // 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 * pModuleInverse / c_light;
 
   G4double cof1     = fElectroMagCof*pModuleInverse ;
 
   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;
}

References source.hepunit::c_light, fElectroMagCof, and fMassCof.

EvaluateRhsReturnB()

void G4EquationOfMotion::EvaluateRhsReturnB ( const G4double  y[], G4double  dydx[], G4double  Field[]  ) const

inlineinherited

Referenced by G4RKG3_Stepper::StepNoErr().

GetFieldObj() [1/2]

G4Field * G4EquationOfMotion::GetFieldObj ( )

inlineinherited

GetFieldObj() [2/2]

const G4Field * G4EquationOfMotion::GetFieldObj ( ) const

inlineinherited

Referenced by G4NystromRK4::GetField().

GetFieldValue()

void G4EquationOfMotion::GetFieldValue ( const G4double  Point[4], G4double  Field[]  ) const

inlineinherited

Referenced by G4BFieldIntegrationDriver::GetFieldValue(), and G4MultiLevelLocator::ReportFieldValue().

RightHandSide()

void G4EquationOfMotion::RightHandSide ( const G4double  y[], G4double  dydx[]  ) const

inlineinherited

Referenced by G4ModifiedMidpoint::DoStep(), and G4VFSALIntegrationStepper::RightHandSide().

SetChargeMomentumMass()

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

virtual

Implements G4EquationOfMotion.

Definition at line 46 of file G4MonopoleEq.cc.

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

References eplus, fElectroMagCof, source.hepunit::fine_structure_const, fMassCof, and G4ChargeState::GetCharge().

SetFieldObj()

void G4EquationOfMotion::SetFieldObj ( G4Field *  pField )

inlineinherited

Referenced by G4FieldManager::SetDetectorField(), and G4NystromRK4::SetDistanceForConstantField().

Field Documentation

fElectroMagCof

G4double G4MonopoleEq::fElectroMagCof = 0.0

private

Definition at line 63 of file G4MonopoleEq.hh.

Referenced by EvaluateRhsGivenB(), and SetChargeMomentumMass().

fMassCof

G4double G4MonopoleEq::fMassCof = 0.0

private

Definition at line 64 of file G4MonopoleEq.hh.

Referenced by EvaluateRhsGivenB(), and SetChargeMomentumMass().

itsField

G4Field* G4EquationOfMotion::itsField = nullptr

privateinherited

Definition at line 90 of file G4EquationOfMotion.hh.

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

• source/geometry/magneticfield/include/G4MonopoleEq.hh
• source/geometry/magneticfield/src/G4MonopoleEq.cc