Row based triplet. More...

#include <RowTripletBasedTrackFinderProcessor.h>

Public Member Functions
	rb_Triplet (rb_Doublet &, rb_Hit *)
	Construct row based triplet. More...

int	getRow () const
	Get row number (of center hit). More...

double	getX () const
	Get X coordinate. More...

double	getY () const
	Get Y coordinate. More...

double	getZ () const
	Get Z coordinate. More...

void	getPos (double *) const
	Get position. More...

double	getVarXYPos (const double=0.) const
	Get XY variance (position). More...

double	getVarXYDir () const
	Get XY variance (direction: phi). More...

double	getVarZPos (const double=0.) const
	Get Z variance (position). More...

double	getVarZDir () const
	Get Z variance (direction: tan(lambda)). More...

double	getPhiMeas () const
	Get XY measurement direction (average of outer hits). More...

double	getPhi () const
	Get direction in XY. More...

double	getTanl () const
	Get slope in ZS. More...

void	getPosCloseTo (const double, const double, double *, double &) const
	Get position close to reference point. More...

rb_Hit *	getHit (const int) const
	Get hit. More...

bool	match (rb_Triplet *, const double, const double) const
	Match triplet with other triplet. More...

double	getCosBeta () const
	Get cos(beta). More...

Private Attributes
rb_Hit *	_hit [3]
	pointers to hits More...

double	_phiMeas
	(average) measurement direction in XY More...

double	_posX
	X position. More...

double	_posY
	Y position. More...

double	_posZ
	Z position. More...

double	_varXY [2]
	(diagonal of) XY covariance matrix (position, slope) More...

double	_phi
	XY direction. More...

double	_tanl
	slope in ZS More...

double	_varZ [2]
	(diagonal of) ZS covariance matrix (position, slope) More...

double	_length
	length More...

double	_cosb
	cos(beta) More...

Detailed Description

Row based triplet.

Is build from matching hits in even or odd rows and has a position and a direction (determined from seeding doublet) in XY and ZS with corresponding covariances.

Definition at line 207 of file RowTripletBasedTrackFinderProcessor.h.

Constructor & Destructor Documentation

◆ rb_Triplet()

marlintpc::rb_Triplet::rb_Triplet	(	rb_Doublet &	doublet,
		rb_Hit *	hit
	)

Construct row based triplet.

Parameters

[in]	doublet	doublet of outer hits
[in]	hit	center hit

Definition at line 726 of file RowTripletBasedTrackFinderProcessor.cc.

References marlintpc::rb_Hit::_cosb, marlintpc::rb_Doublet::getHit(), and marlintpc::rb_Doublet::getParameters().

Member Function Documentation

◆ getCosBeta()

double marlintpc::rb_Triplet::getCosBeta ( ) const

Get cos(beta).

Definition at line 813 of file RowTripletBasedTrackFinderProcessor.cc.

References marlintpc::rb_Hit::_cosb.

◆ getHit()

rb_Hit * marlintpc::rb_Triplet::getHit ( const int ihit ) const

Get hit.

Parameters

[in] ihit hit index

Returns: hit

Definition at line 879 of file RowTripletBasedTrackFinderProcessor.cc.

◆ getPhi()

double marlintpc::rb_Triplet::getPhi ( ) const

Get direction in XY.

Definition at line 803 of file RowTripletBasedTrackFinderProcessor.cc.

Referenced by match().

◆ getPhiMeas()

double marlintpc::rb_Triplet::getPhiMeas ( ) const

Get XY measurement direction (average of outer hits).

Definition at line 798 of file RowTripletBasedTrackFinderProcessor.cc.

Referenced by match().

◆ getPos()

void marlintpc::rb_Triplet::getPos ( double * position ) const

Get position.

Parameters

[out] position position

Definition at line 765 of file RowTripletBasedTrackFinderProcessor.cc.

◆ getPosCloseTo()

void marlintpc::rb_Triplet::getPosCloseTo	(	const double	xref,
		const double	yref,
		double *	position,
		double &	ds
	)		const

Get position close to reference point.

Parameters

[in]	xref	X of reference point
[in]	yref	Y of reference point
[out]	position	position
[out]	ds	arc length (to position)

Definition at line 865 of file RowTripletBasedTrackFinderProcessor.cc.

Referenced by match().

◆ getRow()

int marlintpc::rb_Triplet::getRow ( ) const

Get row number (of center hit).

Definition at line 742 of file RowTripletBasedTrackFinderProcessor.cc.

Referenced by match().

◆ getTanl()

double marlintpc::rb_Triplet::getTanl ( ) const

Get slope in ZS.

Definition at line 808 of file RowTripletBasedTrackFinderProcessor.cc.

Referenced by match().

◆ getVarXYDir()

double marlintpc::rb_Triplet::getVarXYDir ( ) const

Get XY variance (direction: phi).

Definition at line 780 of file RowTripletBasedTrackFinderProcessor.cc.

References marlintpc::rb_Hit::_cosb.

Referenced by match().

◆ getVarXYPos()

double marlintpc::rb_Triplet::getVarXYPos ( const double ds = 0. ) const

Get XY variance (position).

Parameters

[in] ds arc length

Definition at line 775 of file RowTripletBasedTrackFinderProcessor.cc.

Referenced by match().

◆ getVarZDir()

double marlintpc::rb_Triplet::getVarZDir ( ) const

Get Z variance (direction: tan(lambda)).

Definition at line 793 of file RowTripletBasedTrackFinderProcessor.cc.

Referenced by match().

◆ getVarZPos()

double marlintpc::rb_Triplet::getVarZPos ( const double ds = 0. ) const

Get Z variance (position).

Parameters

[in] ds arc length

Definition at line 788 of file RowTripletBasedTrackFinderProcessor.cc.

Referenced by match().

◆ getX()

double marlintpc::rb_Triplet::getX ( ) const

Get X coordinate.

Definition at line 747 of file RowTripletBasedTrackFinderProcessor.cc.

Referenced by match().

◆ getY()

double marlintpc::rb_Triplet::getY ( ) const

Get Y coordinate.

Definition at line 752 of file RowTripletBasedTrackFinderProcessor.cc.

Referenced by match().

◆ getZ()

double marlintpc::rb_Triplet::getZ ( ) const

Get Z coordinate.

Definition at line 757 of file RowTripletBasedTrackFinderProcessor.cc.

◆ match()

bool marlintpc::rb_Triplet::match	(	rb_Triplet *	trp,
		const double	posCut,
		const double	dirCut
	)		const

Match triplet with other triplet.

Match triplets in position and direction in XY and ZS.

Parameters

[in]	trp	triplet to compare with
[in]	posCut	cuts in normalized variance for position matching of (disjunct, overlapping) triplets
[in]	dirCut	cuts in normalized variance for direction matching of (disjunct, overlapping) triplets

Returns: matching flag

Chi2 values calculated from differences in position (at mid point) and direction and covariance matrices in XY and ZS are used as matching criteria (separately).

Matching cuts at ~4 sigma.

Definition at line 831 of file RowTripletBasedTrackFinderProcessor.cc.

References getPhi(), marlintpc::rb_Hit::getPhiMeas(), getPhiMeas(), getPosCloseTo(), marlintpc::rb_Hit::getRow(), getRow(), getTanl(), getVarXYDir(), getVarXYPos(), getVarZDir(), getVarZPos(), getX(), and getY().

Member Data Documentation

◆ _cosb

double marlintpc::rb_Triplet::_cosb

private

cos(beta)

Definition at line 238 of file RowTripletBasedTrackFinderProcessor.h.

◆ _hit

rb_Hit* marlintpc::rb_Triplet::_hit[3]

private

pointers to hits

Definition at line 228 of file RowTripletBasedTrackFinderProcessor.h.

◆ _length

double marlintpc::rb_Triplet::_length

private

length

Definition at line 237 of file RowTripletBasedTrackFinderProcessor.h.

◆ _phi

double marlintpc::rb_Triplet::_phi

private

XY direction.

Definition at line 234 of file RowTripletBasedTrackFinderProcessor.h.

◆ _phiMeas

double marlintpc::rb_Triplet::_phiMeas

private

(average) measurement direction in XY

Definition at line 229 of file RowTripletBasedTrackFinderProcessor.h.

◆ _posX

double marlintpc::rb_Triplet::_posX

private

X position.

Definition at line 230 of file RowTripletBasedTrackFinderProcessor.h.

◆ _posY

double marlintpc::rb_Triplet::_posY

private

Y position.

Definition at line 231 of file RowTripletBasedTrackFinderProcessor.h.

◆ _posZ

double marlintpc::rb_Triplet::_posZ

private

Z position.

Definition at line 232 of file RowTripletBasedTrackFinderProcessor.h.

◆ _tanl

double marlintpc::rb_Triplet::_tanl

private

slope in ZS

Definition at line 235 of file RowTripletBasedTrackFinderProcessor.h.

◆ _varXY

double marlintpc::rb_Triplet::_varXY[2]

private

(diagonal of) XY covariance matrix (position, slope)

Definition at line 233 of file RowTripletBasedTrackFinderProcessor.h.

◆ _varZ

double marlintpc::rb_Triplet::_varZ[2]

private

(diagonal of) ZS covariance matrix (position, slope)

Definition at line 236 of file RowTripletBasedTrackFinderProcessor.h.

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

Public Member Functions

Private Attributes

Detailed Description

Constructor & Destructor Documentation

◆ rb_Triplet()

Member Function Documentation

◆ getCosBeta()

◆ getHit()

◆ getPhi()

◆ getPhiMeas()

◆ getPos()

◆ getPosCloseTo()

◆ getRow()

◆ getTanl()

◆ getVarXYDir()

◆ getVarXYPos()

◆ getVarZDir()

◆ getVarZPos()

◆ getX()

◆ getY()

◆ getZ()

◆ match()

Member Data Documentation

◆ _cosb

◆ _hit

◆ _length

◆ _phi

◆ _phiMeas

◆ _posX

◆ _posY

◆ _posZ

◆ _tanl

◆ _varXY

◆ _varZ