Class that provides the magnetic field due to a square annulus of current. More...

#include <BDSFieldMagSolenoidBlock.hh>

Inheritance diagram for BDSFieldMagSolenoidBlock:

Collaboration diagram for BDSFieldMagSolenoidBlock:

Public Member Functions
	BDSFieldMagSolenoidBlock (G4double strength, G4bool strengthIsCurrent, G4double innerRadiusIn, G4double radialThicknessIn, G4double fullLengthZIn, G4double toleranceIn, G4int nSheetsIn)
	Explicit constructor.

	BDSFieldMagSolenoidBlock (const BDSMagnetStrength *st, G4double innerRadiusIn)

virtual G4ThreeVector	GetField (const G4ThreeVector &position, const G4double t=0) const
	Calculate the field value.


G4double	GetB0 () const
	Accessor.

G4double	GetI () const
	Accessor.

Public Member Functions inherited from BDSFieldMag
	BDSFieldMag ()

	BDSFieldMag (G4Transform3D transformIn)

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 Attributes
G4double	a

G4double	radialThickness

G4double	fullLengthZ

G4double	B0

G4double	I

G4double	coilTolerance

G4int	nSheetsBlock

G4double	currentDensity

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 field due to a square annulus of current.

Looking in the z,r plane we would see two square blocks with an inner edge at +-r and centered at z = 0. In r, the square extends from innerRadiusIn to innerRadiusIn+radialThicknessIn. There is a +- this in r with the top one being the sign of the strength and the bottom one being the return of the annulus with current in the opposite direction. In phi, it is circular.

Author: Rohan Kamath, Paul Bogdan Jurj

Definition at line 40 of file BDSFieldMagSolenoidBlock.hh.

Constructor & Destructor Documentation

◆ BDSFieldMagSolenoidBlock() [1/2]

BDSFieldMagSolenoidBlock::BDSFieldMagSolenoidBlock	(	G4double	strength,
		G4bool	strengthIsCurrent,
		G4double	innerRadiusIn,
		G4double	radialThicknessIn,
		G4double	fullLengthZIn,
		G4double	toleranceIn,
		G4int	nSheetsIn
	)

Explicit constructor.

Definition at line 42 of file BDSFieldMagSolenoidBlock.cc.

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

Here is the call graph for this function:

◆ BDSFieldMagSolenoidBlock() [2/2]

BDSFieldMagSolenoidBlock::BDSFieldMagSolenoidBlock	(	const BDSMagnetStrength *	st,
		G4double	innerRadiusIn
	)

Alternative constructor for field factory that uses "field" (i.e. B) strength from the magnet strength instance, the argument innerRadiusIn, coilRadialThickness, and length from the strength instance.

Definition at line 36 of file BDSFieldMagSolenoidBlock.cc.