BDSFieldMagDipole Class Reference

A uniform dipole field. More...

#include <BDSFieldMagDipole.hh>

Inheritance diagram for BDSFieldMagDipole:

Collaboration diagram for BDSFieldMagDipole:

Public Member Functions
	BDSFieldMagDipole (const G4ThreeVector &field)
	Initialise with field of correct magnitude and direction. More...
	BDSFieldMagDipole (const BDSMagnetStrength *strength)
virtual G4ThreeVector	GetField (const G4ThreeVector &position, const G4double t=0) const
	Access the field value. More...
G4ThreeVector	FieldValue () const
Public Member Functions inherited from BDSFieldMag
	BDSFieldMag ()
	BDSFieldMag (G4Transform3D transformIn)
virtual G4ThreeVector	GetField (const G4ThreeVector &position, const G4double t=0) const =0
virtual void	GetFieldValue (const G4double point[4], G4double *field) const
virtual G4ThreeVector	GetFieldTransformed (const G4ThreeVector &position, const G4double t) const
	Get the field value after applying transform for local offset. More...
virtual void	SetTransform (const G4Transform3D &transformIn)
G4bool	FiniteStrength () const
	Accessor. More...

Private Member Functions
	BDSFieldMagDipole ()
	Private default constructor to ensure use of supplied constructor.

Private Attributes
G4ThreeVector	localField

Additional Inherited Members
Protected Attributes inherited from BDSFieldMag
G4bool	finiteStrength
	Flag to cache whether finite nor not. More...
G4Transform3D	transform
	Transform to apply for the field relative to the local coordinates of the geometry. More...

Detailed Description

A uniform dipole field.

This class represents a uniform dipole field. This may optionally be constructed with a unit vector to denote a different direction. This uses the parameters "angle" and "length" (the magnetic field length) from the input BDSMagnetStrength instance. MADX uses angle rather than k0, so we follow that convention.

Definition at line 39 of file BDSFieldMagDipole.hh.

Constructor & Destructor Documentation

BDSFieldMagDipole() [1/2]

BDSFieldMagDipole::BDSFieldMagDipole

(

const G4ThreeVector &

field

)

Initialise with field of correct magnitude and direction.

Definition at line 27 of file BDSFieldMagDipole.cc.

References BDSFieldMag::finiteStrength, BDS::IsFinite(), and localField.

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BDSFieldMagDipole() [2/2]

BDSFieldMagDipole::BDSFieldMagDipole

(

const BDSMagnetStrength *

strength

)

This constructor uses bx, by and bz from the strength to form a unit vector, however if these are all 0 and 'field' is finite (in strength), then a field along unit y with strength 'field' is provided.

Definition at line 36 of file BDSFieldMagDipole.cc.

References BDSFieldMag::finiteStrength, BDS::IsFinite(), and localField.

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~BDSFieldMagDipole()

virtual BDSFieldMagDipole::~BDSFieldMagDipole ( )

inlinevirtual

Definition at line 50 of file BDSFieldMagDipole.hh.

Member Function Documentation

FieldValue()

G4ThreeVector BDSFieldMagDipole::FieldValue ( ) const

inline

Definition at line 56 of file BDSFieldMagDipole.hh.

GetField()

G4ThreeVector BDSFieldMagDipole::GetField ( const G4ThreeVector &  position, const G4double  t = 0  ) const

virtual

Access the field value.

Implements BDSFieldMag.

Definition at line 54 of file BDSFieldMagDipole.cc.

References localField.

Field Documentation

localField

G4ThreeVector BDSFieldMagDipole::localField

private

The vector of the field. This constructed in local coordinates and the first time the field is queried, the auxiliary navigator (through inheritance) is used to transform the vector to global coordinates.

Definition at line 65 of file BDSFieldMagDipole.hh.

Referenced by BDSFieldMagDipole(), and GetField().

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

• /Users/nevay/physics/reps/bdsim/include/BDSFieldMagDipole.hh
• /Users/nevay/physics/reps/bdsim/src/BDSFieldMagDipole.cc