Implementation of the polynomial field approximation. More...

#include <CbmLitFieldFitter.h>

Collaboration diagram for CbmLitFieldFitter:

Public Member Functions
	CbmLitFieldFitter (unsigned int polynomDegree)
	Constructor. More...

virtual	~CbmLitFieldFitter ()
	Destructor. More...

template<class T >
void	FitSlice (float Z, lit::parallel::LitFieldSlice< T > &slice)
	Fits (X, Y) slice of the magnetic field at Z position. More...

void	FitSliceScal (float Z, lit::parallel::LitFieldSlice< fscal > &slice)
	FitSlice implementation using fscal data type. More...

void	FitSliceVec (float Z, lit::parallel::LitFieldSlice< fvec > &slice)
	FitSlice implementation using fvec data type. More...

void	SetXangle (double xangle)

void	SetYangle (double yangle)

void	SetNofBinsX (int nofBinsX)

void	SetNofBinsY (int nofBinsY)

void	SetUseEllipseAcc (bool useEllipseAcc)

Private Member Functions
void	FitSlice (double Z, std::vector< double > &parBx, std::vector< double > &parBy, std::vector< double > &parBz)
	Fit (X, Y) slice of magnetic field at Z position. More...

void	FitSlice (const std::vector< double > &x, const std::vector< double > &y, const std::vector< double > &z, std::vector< double > &par)
	Fit (X, Y) slice of magnetic field. More...

void	FitSliceMy (double Z, std::vector< double > &parBx, std::vector< double > &parBy, std::vector< double > &parBz)
	Fit (X, Y) slice of the magnetic field at Z position. More...

const CbmLitPolynom *	GetPolynom () const
	Return polynomial which is used for approximation. More...

Private Attributes
FairField *	fField

double	fXangle

double	fYangle

int	fNofBinsX

int	fNofBinsY

bool	fUseEllipseAcc

unsigned int	fPolynomDegree

CbmLitPolynom *	fPolynom

Detailed Description

Implementation of the polynomial field approximation.

Class performs approximation of magnetic field using 0-9 degree polynomial. MINUIT is used for minimization. Also custom LSM fit is implemented for comparison.

Author: Andrey Lebedev andre.nosp@m.y.le.nosp@m.bedev.nosp@m.@gsi.nosp@m..de

Date: 2009

Definition at line 60 of file CbmLitFieldFitter.h.

Constructor & Destructor Documentation

◆ CbmLitFieldFitter()

CbmLitFieldFitter::CbmLitFieldFitter ( unsigned int polynomDegree )

Constructor.

Parameters

[in] polynomDegree Polynomial degree to be used for field approximation.

Definition at line 786 of file CbmLitFieldFitter.cxx.

References fField, and fPolynom.

◆ ~CbmLitFieldFitter()

CbmLitFieldFitter::~CbmLitFieldFitter ( )

virtual

Destructor.

Definition at line 810 of file CbmLitFieldFitter.cxx.

Member Function Documentation

◆ FitSlice() [1/3]

void CbmLitFieldFitter::FitSlice	(	const std::vector< double > &	x,
		const std::vector< double > &	y,
		const std::vector< double > &	z,
		std::vector< double > &	par
	)

private

Fit (X, Y) slice of magnetic field.

Parameters

[in]	x	Vector with X coordinates.
[in]	y	Vector with y coordinates.
[in]	z	Vector with field values.
[out]	par	Output vector with polynomial coefficients.

Definition at line 886 of file CbmLitFieldFitter.cxx.

References fPolynom, CbmLitPolynom::GetNofCoefficients(), FCNPolynom::GetPolynom(), i, x, and y.

◆ FitSlice() [2/3]

void CbmLitFieldFitter::FitSlice	(	double	Z,
		std::vector< double > &	parBx,
		std::vector< double > &	parBy,
		std::vector< double > &	parBz
	)

private

Fit (X, Y) slice of magnetic field at Z position.

Parameters

[in]	Z	Z position of the slice.
[out]	parBx	Output vector with polynomial coefficients for Bx.
[out]	parBy	Output vector with polynomial coefficients for By.
[out]	parBz	Output vector with polynomial coefficients for Bz.

Definition at line 838 of file CbmLitFieldFitter.cxx.

References fField, FitSlice(), fNofBinsX, fNofBinsY, fUseEllipseAcc, fXangle, fYangle, pos, x, and y.

◆ FitSlice() [3/3]

template<class T >

void CbmLitFieldFitter::FitSlice	(	float	Z,
		lit::parallel::LitFieldSlice< T > &	slice
	)

Fits (X, Y) slice of the magnetic field at Z position.

Parameters

[in]	Z	Z position of the slice.
[out]	slice	Output approximated field slice.

Definition at line 813 of file CbmLitFieldFitter.cxx.

References lit::parallel::LitFieldSlice< T >::SetCoefficients(), and lit::parallel::LitFieldSlice< T >::SetZ().

Referenced by FitSlice().

◆ FitSliceMy()

void CbmLitFieldFitter::FitSliceMy	(	double	Z,
		std::vector< double > &	parBx,
		std::vector< double > &	parBy,
		std::vector< double > &	parBz
	)

private

Fit (X, Y) slice of the magnetic field at Z position.

Parameters

[in]	Z	Z position of the slice.
[out]	parBx	Output vector with polynomial coefficients for Bx.
[out]	parBy	Output vector with polynomial coefficients for By.
[out]	parBz	Output vector with polynomial coefficients for Bz.

Definition at line 917 of file CbmLitFieldFitter.cxx.

References fabs(), fPolynomDegree, fXangle, fYangle, i, m, sqrt(), x, and y.

◆ FitSliceScal()

void CbmLitFieldFitter::FitSliceScal	(	float	Z,
		lit::parallel::LitFieldSlice< fscal > &	slice
	)

FitSlice implementation using fscal data type.

Definition at line 827 of file CbmLitFieldFitter.cxx.

◆ FitSliceVec()

void CbmLitFieldFitter::FitSliceVec	(	float	Z,
		lit::parallel::LitFieldSlice< fvec > &	slice
	)

FitSlice implementation using fvec data type.

Definition at line 833 of file CbmLitFieldFitter.cxx.

◆ GetPolynom()

const CbmLitPolynom* CbmLitFieldFitter::GetPolynom ( ) const

inlineprivate

Return polynomial which is used for approximation.

Returns: Polynomial which is used for approximation.

Definition at line 139 of file CbmLitFieldFitter.h.

References fPolynom.

◆ SetNofBinsX()

void CbmLitFieldFitter::SetNofBinsX ( int nofBinsX )

inline

Definition at line 94 of file CbmLitFieldFitter.h.

References fNofBinsX.

◆ SetNofBinsY()

void CbmLitFieldFitter::SetNofBinsY ( int nofBinsY )

inline

Definition at line 95 of file CbmLitFieldFitter.h.

References fNofBinsY.

◆ SetUseEllipseAcc()

void CbmLitFieldFitter::SetUseEllipseAcc ( bool useEllipseAcc )

inline

Definition at line 96 of file CbmLitFieldFitter.h.

References fUseEllipseAcc.

◆ SetXangle()

void CbmLitFieldFitter::SetXangle ( double xangle )

inline

Definition at line 92 of file CbmLitFieldFitter.h.

References fXangle.

◆ SetYangle()

void CbmLitFieldFitter::SetYangle ( double yangle )

inline

Definition at line 93 of file CbmLitFieldFitter.h.

References fYangle.

Member Data Documentation

◆ fField

FairField* CbmLitFieldFitter::fField

private

Definition at line 142 of file CbmLitFieldFitter.h.

Referenced by CbmLitFieldFitter(), and FitSlice().

◆ fNofBinsX

int CbmLitFieldFitter::fNofBinsX

private

Definition at line 147 of file CbmLitFieldFitter.h.

Referenced by FitSlice(), and SetNofBinsX().

◆ fNofBinsY

int CbmLitFieldFitter::fNofBinsY

private

Definition at line 148 of file CbmLitFieldFitter.h.

Referenced by FitSlice(), and SetNofBinsY().

◆ fPolynom

CbmLitPolynom* CbmLitFieldFitter::fPolynom

private

Definition at line 155 of file CbmLitFieldFitter.h.

Referenced by CbmLitFieldFitter(), FitSlice(), and GetPolynom().

◆ fPolynomDegree

unsigned int CbmLitFieldFitter::fPolynomDegree

private

Definition at line 154 of file CbmLitFieldFitter.h.

Referenced by FitSliceMy().

◆ fUseEllipseAcc

bool CbmLitFieldFitter::fUseEllipseAcc

private

Definition at line 151 of file CbmLitFieldFitter.h.

Referenced by FitSlice(), and SetUseEllipseAcc().

◆ fXangle

double CbmLitFieldFitter::fXangle

private

Definition at line 144 of file CbmLitFieldFitter.h.

Referenced by FitSlice(), FitSliceMy(), and SetXangle().

◆ fYangle

double CbmLitFieldFitter::fYangle

private

Definition at line 145 of file CbmLitFieldFitter.h.

Referenced by FitSlice(), FitSliceMy(), and SetYangle().

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

Public Member Functions

Private Member Functions

Private Attributes

Detailed Description

Constructor & Destructor Documentation

◆ CbmLitFieldFitter()

◆ ~CbmLitFieldFitter()

Member Function Documentation

◆ FitSlice() [1/3]

◆ FitSlice() [2/3]

◆ FitSlice() [3/3]

◆ FitSliceMy()

◆ FitSliceScal()

◆ FitSliceVec()

◆ GetPolynom()

◆ SetNofBinsX()

◆ SetNofBinsY()

◆ SetUseEllipseAcc()

◆ SetXangle()

◆ SetYangle()

Member Data Documentation

◆ fField

◆ fNofBinsX

◆ fNofBinsY

◆ fPolynom

◆ fPolynomDegree

◆ fUseEllipseAcc

◆ fXangle

◆ fYangle