BDSFieldMagUndulator Class Reference

Class that provides the magnetic strength in a quadrupole. More...

#include <BDSFieldMagUndulator.hh>

Inheritance diagram for BDSFieldMagUndulator:

Collaboration diagram for BDSFieldMagUndulator:

Public Member Functions
	BDSFieldMagUndulator (BDSMagnetStrength const *strength, G4double beamPipeRadiusIn)
virtual G4ThreeVector	GetField (const G4ThreeVector &position, const G4double t=0) const
	Access the field value.
Public Member Functions inherited from BDSFieldMag
	BDSFieldMag ()
	BDSFieldMag (G4Transform3D transformIn)
virtual G4ThreeVector	GetField (const G4ThreeVector &position, const G4double t=0) const =0
virtual G4bool	TimeVarying () const
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.
virtual void	SetTransform (const G4Transform3D &transformIn)
void	SetModulator (BDSModulator *modulatorIn)
	Set the optional modulator.
G4bool	FiniteStrength () const
	Accessor.

Private Member Functions
	BDSFieldMagUndulator ()
	Private default constructor to force use of supplied constructor.

Private Attributes
G4double	B
	The peak field.
G4double	wavenumber
	The undulator wavenumber.
G4double	limit
G4double	beamPipeRadius
	Cache of beam pipe radius to know maximum valid extent of field.

Additional Inherited Members
Protected Attributes inherited from BDSFieldMag
G4bool	finiteStrength
	Flag to cache whether finite nor not.
G4Transform3D	transform
	Transform to apply for the field relative to the local coordinates of the geometry.
G4bool	transformIsNotIdentity
	Cache of whether to use transform at all.
BDSModulator *	modulator
	Optional modulator;.

Detailed Description

Class that provides the magnetic strength in a quadrupole.

The magnetic field is calculated from the quadrupole strength parameter "k1" and a design rigidity (brho).

Definition at line 36 of file BDSFieldMagUndulator.hh.

Constructor & Destructor Documentation

BDSFieldMagUndulator()

BDSFieldMagUndulator::BDSFieldMagUndulator	(	BDSMagnetStrength const *	strength,
		G4double	beamPipeRadiusIn
	)

Definition at line 32 of file BDSFieldMagUndulator.cc.

~BDSFieldMagUndulator()

virtual BDSFieldMagUndulator::~BDSFieldMagUndulator ( )

inlinevirtual

Definition at line 42 of file BDSFieldMagUndulator.hh.

Member Function Documentation

GetField()

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

virtual

Access the field value.

Implements BDSFieldMag.

Definition at line 46 of file BDSFieldMagUndulator.cc.

References B, beamPipeRadius, limit, and wavenumber.

Field Documentation

B

G4double BDSFieldMagUndulator::B

private

The peak field.

Definition at line 53 of file BDSFieldMagUndulator.hh.

Referenced by GetField().

beamPipeRadius

G4double BDSFieldMagUndulator::beamPipeRadius

private

Cache of beam pipe radius to know maximum valid extent of field.

Definition at line 63 of file BDSFieldMagUndulator.hh.

Referenced by GetField().

limit

G4double BDSFieldMagUndulator::limit

private

Limit to clip the field at as it's unbounded with hyperbolic functions but must remain bounded.

Definition at line 60 of file BDSFieldMagUndulator.hh.

Referenced by GetField().

wavenumber

G4double BDSFieldMagUndulator::wavenumber

private

The undulator wavenumber.

Definition at line 56 of file BDSFieldMagUndulator.hh.

Referenced by GetField().

---

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

• /Users/lnevay/physics/reps/bdsim/include/BDSFieldMagUndulator.hh
• /Users/lnevay/physics/reps/bdsim/src/BDSFieldMagUndulator.cc