xAOD::AFPTrack_v1 Class Reference

Class representing a track reconstructed in AFP. More...

#include <AFPTrack_v1.h>

Inheritance diagram for xAOD::AFPTrack_v1:

Collaboration diagram for xAOD::AFPTrack_v1:

Public Types
typedef ElementLink< AFPSiHitContainer >	AFPHitLink_t
	Type of a link to the hit.

Public Member Functions
int	stationID () const
	Index of the station where track was reconstructed.
void	setStationID (int stationID)
	Set index of the station where track was reconstructed.
float	xLocal () const
	Track position along X axis in station local coordinate system.
void	setXLocal (float newXLocal)
	Set track position along X axis in station local coordinate system.
float	yLocal () const
	Track position along Y axis in station local coordinate system.
void	setYLocal (float newYLocal)
	Set track coordinate along Y axis in station local coordinate system.
float	zLocal () const
	Track position along Z axis in station local coordinate system.
void	setZLocal (float newZLocal)
	Set track coordinate along Z axis in station local coordinate system.
float	xSlope () const
	Slope of the reconstructed track along X axis in local coordinate system.
void	setXSlope (float newXSlope)
	Set slope of the reconstructed track along X axis in local coordinate system.
float	ySlope () const
	Slope of the reconstructed track along Y axis in local coordinate system.
void	setYSlope (float newYSlope)
	Set slope of the reconstructed track along Y axis in local coordinate system.
unsigned int	nHoles () const
	Number of empty pixels that the track passes through.
void	setNHoles (unsigned int nHoles)
	Set number of empty pixels that the track passes through.
int	nHits () const
	Number of pixels used to reconstruct the track.
void	setNHits (int nHits)
	Set number of pixels used to reconstruct the track.
const std::vector< AFPHitLink_t > &	hits () const
	Vector of links to pixels that were used to reconstruct the track.
void	setHits (const std::vector< AFPHitLink_t > &newHitsVector)
	Set vector of links to pixels used for track reconstruction.
void	addHit (const AFPHitLink_t &newHit)
	Add a link to a pixel used to reconstruct the track.
float	chi2 () const
	\(\chi^2\) value of the track fit to the selected pixels.
void	setChi2 (float newFChi2)
	Set \(\chi^2\) value of the track fit to the selected pixels.
int	algID () const
	Identification number of the algorithm used to reconstruct the track.
void	setAlgID (int newIAlgID)
	Set reconstruction algorithm identification number.
void	toPersistent ()
	Function making sure that the object is ready for persistification i.e. saving.

Detailed Description

Class representing a track reconstructed in AFP.

This class provides access to the information about tracks that were reconstructed using AFP information.

Definition at line 35 of file AFPTrack_v1.h.

Member Typedef Documentation

AFPHitLink_t

typedef ElementLink< AFPSiHitContainer > xAOD::AFPTrack_v1::AFPHitLink_t

Type of a link to the hit.

Definition at line 39 of file AFPTrack_v1.h.

Member Function Documentation

addHit()

void xAOD::AFPTrack_v1::addHit

(

const AFPHitLink_t &

newHit

)

Add a link to a pixel used to reconstruct the track.

A new link to the hit is added to the existing vector of links to the pixels used to reconstruct the track.

Parameters

newHit

link to the pixel used to reconstruct the track

Definition at line 39 of file AFPTrack_v1.cxx.

  {
    hitsAcc( *this ).push_back( link );
  }

algID()

int xAOD::AFPTrack_v1::algID

(

)

const

Identification number of the algorithm used to reconstruct the track.

The following coding is used.

ID	Algorithm	Comments
0	Basic Kalman algorithm

Returns

identification number of the algorithm used to reconstruct the track

chi2()

float xAOD::AFPTrack_v1::chi2

(

)

const

\(\chi^2\) value of the track fit to the selected pixels.

This value gives information about how well the fitted track lays on the selected pixels.

Returns

\(\chi^2\) value of the track fit to the selected pixels

hits()

const std::vector< AFPHitLink_t > & xAOD::AFPTrack_v1::hits

(

)

const

Vector of links to pixels that were used to reconstruct the track.

This method provides access to the pixels that were used to reconstruct the track via ElementLink object.

Note

• It can be checked if the link is active using method ElementLink::isValid()
• A pointer to the xAOD::AFPSiHit object can be retrieved using asterisk operator e.g.

  xAOD::AFPSiHit* hit = *(hits().at(0));

Returns

nHits()

int xAOD::AFPTrack_v1::nHits

(

)

const

Number of pixels used to reconstruct the track.

Returns

number of pixels used to reconstruct the track.

nHoles()

unsigned int xAOD::AFPTrack_v1::nHoles

(

)

const

Number of empty pixels that the track passes through.

Number of pixels that are expected to be hit, because track goes through them, but which are considered to be not fired.

Returns

Number of empty pixels that the track passes through

setAlgID()

void xAOD::AFPTrack_v1::setAlgID

(

int

newIAlgID

)

Set reconstruction algorithm identification number.

The following coding is used.

ID	Algorithm	Comments
0	Basic Kalman algorithm

Returns

identification number of the algorithm used to reconstruct the track

Parameters

newIAlgID

identification number of the algorithm used to reconstruct the track

setChi2()

void xAOD::AFPTrack_v1::setChi2

(

float

newFChi2

)

Set \(\chi^2\) value of the track fit to the selected pixels.

Parameters

newFChi2

\(\chi^2\) value of the track fit to the selected pixels

setHits()

void xAOD::AFPTrack_v1::setHits

(

const std::vector< AFPHitLink_t > &

newHitsVector

)

Set vector of links to pixels used for track reconstruction.

Parameters

newHitsVector

vector of links to pixels used for track reconstruction

setNHits()

void xAOD::AFPTrack_v1::setNHits

(

int

nHits

)

Set number of pixels used to reconstruct the track.

Parameters

nHits

number of pixels used to reconstruct the track

setNHoles()

void xAOD::AFPTrack_v1::setNHoles

(

unsigned int

nHoles

)

Set number of empty pixels that the track passes through.

Number of pixels that are expected to be hit, because track goes through them, but which are considered to be not fired.

Returns

Number of empty pixels that the track passes through

Parameters

nHoles

number of empty pixels that the track passes through

setStationID()

void xAOD::AFPTrack_v1::setStationID

(

int

stationID

)

Set index of the station where track was reconstructed.

Stations indexing follows the scheme

Station ID	Station Name	Station Position
0	far station A side	z = 217 m
1	near station A side	z = 205 m
2	near station C side	z = -205 m
3	far station C side	z = -217 m

Returns

index of the station

Parameters

stationID

index of the station where track was reconstructed

setXLocal()

void xAOD::AFPTrack_v1::setXLocal

(

float

newXLocal

)

Set track position along X axis in station local coordinate system.

Parameters

newXLocal

track coordinate along X axis in station local coordinate system

setXSlope()

void xAOD::AFPTrack_v1::setXSlope

(

float

newXSlope

)

Set slope of the reconstructed track along X axis in local coordinate system.

Difference between X position of the first and last hit used to reconstruct track divided by their distance in Z direction.

\[ \textrm{xSlope} = \frac{x_{\textrm{end}} - x_{\textrm{begin}}} {z_{\textrm{end}} - z_{\textrm{begin}}} \]

Parameters

newXSlope

slope of the track along X axis in local coordinate system

setYLocal()

void xAOD::AFPTrack_v1::setYLocal

(

float

newYLocal

)

Set track coordinate along Y axis in station local coordinate system.

@copydetail xAOD::AFPTrack_v1::xLocal()

Parameters

newYLocal

track position along Y axis in station local coordinate system

setYSlope()

void xAOD::AFPTrack_v1::setYSlope

(

float

newYSlope

)

Set slope of the reconstructed track along Y axis in local coordinate system.

Difference between Y position of the first and last hit used to reconstruct track divided by their distance in Z direction.

\[ \textrm{ySlope} = \frac{y_{\textrm{end}} - y_{\textrm{begin}}} {z_{\textrm{end}} - z_{\textrm{begin}}} \]

Parameters

newYSlope

slope of the track along Y axis in local coordinate system

setZLocal()

void xAOD::AFPTrack_v1::setZLocal

(

float

newZLocal

)

Set track coordinate along Z axis in station local coordinate system.

This is the position of the beginning of the track i.e. closest to the interaction point. Usually in the first pixel plane.

Parameters

newYLocal

track coordinate along Z axis in station local coordinate system

stationID()

int xAOD::AFPTrack_v1::stationID

(

)

const

Index of the station where track was reconstructed.

Stations indexing follows the scheme

Station ID	Station Name	Station Position
0	far station A side	z = 217 m
1	near station A side	z = 205 m
2	near station C side	z = -205 m
3	far station C side	z = -217 m

Returns

index of the station

toPersistent()

void xAOD::AFPTrack_v1::toPersistent

(

)

Function making sure that the object is ready for persistification i.e. saving.

Definition at line 44 of file AFPTrack_v1.cxx.

                                 {
    // Prepare the hits links for persistification:
    if( hitsAcc.isAvailableWritable( *this ) ) {
      std::vector<AFPHitLink_t>::iterator end = hitsAcc( *this ).end();
      for(std::vector<AFPHitLink_t>::iterator itr = hitsAcc( *this ).begin(); itr != end; ++itr )
    itr->toPersistent();
 
    }
    
      return;
  }

xLocal()

float xAOD::AFPTrack_v1::xLocal

(

)

const

Track position along X axis in station local coordinate system.

This is the position of the beginning of the track i.e. closest to the interaction point. Usually in the first pixel plane.

xSlope()

float xAOD::AFPTrack_v1::xSlope

(

)

const

Slope of the reconstructed track along X axis in local coordinate system.

Difference between X position of the first and last hit used to reconstruct track divided by their distance in Z direction.

\[ \textrm{xSlope} = \frac{x_{\textrm{end}} - x_{\textrm{begin}}} {z_{\textrm{end}} - z_{\textrm{begin}}} \]

yLocal()

float xAOD::AFPTrack_v1::yLocal

(

)

const

Track position along Y axis in station local coordinate system.

@copydetail xAOD::AFPTrack_v1::xLocal()

ySlope()

float xAOD::AFPTrack_v1::ySlope

(

)

const

Slope of the reconstructed track along Y axis in local coordinate system.

Difference between Y position of the first and last hit used to reconstruct track divided by their distance in Z direction.

\[ \textrm{ySlope} = \frac{y_{\textrm{end}} - y_{\textrm{begin}}} {z_{\textrm{end}} - z_{\textrm{begin}}} \]

zLocal()

float xAOD::AFPTrack_v1::zLocal

(

)

const

Track position along Z axis in station local coordinate system.

This is the position of the beginning of the track i.e. closest to the interaction point. Usually in the first pixel plane.

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

• AFPTrack_v1.h
• AFPTrack_v1.cxx