Class representing a hit in silicon detector. More...

#include <AFPSiHit_v1.h>

Inheritance diagram for xAOD::AFPSiHit_v1:

Collaboration diagram for xAOD::AFPSiHit_v1:

Public Types
typedef ElementLink< AFPTrackContainer >	AFPTrackLink_t
	Type of a link to the track.

Public Member Functions
	AFPSiHit_v1 ()
float	depositedCharge () const
	Charge deposited in the pixel.
void	setDepositedCharge (float charge)
	Method setting value of the charge deposited in the pixel.
float	timeOverThreshold () const
	Time over threshold of signal for a pixel.
void	setTimeOverThreshold (float timeOverThreshold)
	Method setting value of time over threshold.
int	stationID () const
	Index of the station with pixel hit.
void	setStationID (int stationID)
	Set index of the station with pixel hit.
int	pixelLayerID () const
	Index of the layer of pixels, i.e.
void	setPixelLayerID (int layerID)
	Method setting index of the pixel layer with hit.
int	pixelRowIDChip () const
	Index of the pixel row in chip coordinate system.
void	setPixelRowIDChip (int rowID)
	Set pixel row index in the chip coordinate system.
int	pixelColIDChip () const
	Index of the pixel column in chip coordinate system.
void	setPixelColIDChip (int colID)
	Set pixel column index in the chip coordinate system.
int	pixelHorizID () const
	Index of the pixel along X axis in LHC coordinate system.
void	setPixelHorizID (const int horizontalID)
	Set index of the pixel along X axis in LHC coordinate system.
int	pixelVertID () const
	Index of the pixel along Y axis in LHC coordinate system.
void	setPixelVertID (const int verticalID)
	Set index of the pixel along Y axis in LHC coordinate system.
const std::vector< AFPTrackLink_t > &	tracksLinks () const
	Vector of links to tracks for which reconstruction this hit was used.
void	setTracksLinks (const std::vector< AFPTrackLink_t > &tracksVector)
	Set vector of links to tracks that use this hit.
void	addTrackLink (const AFPTrackLink_t &newTrack)
	Add a link to a track that uses this hit in reconstruction.
void	toPersistent ()
	Function making sure that the object is ready for persistification i.e. saving.

Detailed Description

Class representing a hit in silicon detector.

This class provides information about a single hit in AFP silicon detector.

Definition at line 33 of file AFPSiHit_v1.h.

Member Typedef Documentation

◆ AFPTrackLink_t

typedef ElementLink< AFPTrackContainer > xAOD::AFPSiHit_v1::AFPTrackLink_t

Type of a link to the track.

Definition at line 38 of file AFPSiHit_v1.h.

Constructor & Destructor Documentation

◆ AFPSiHit_v1()

xAOD::AFPSiHit_v1::AFPSiHit_v1 ( )

Definition at line 25 of file AFPSiHit_v1.cxx.

25 : SG::AuxElement()

26 { }

SG::AuxElement

AuxElement(SG::AuxVectorData *container, size_t index)

Base class for elements of a container that can have aux data.

Member Function Documentation

◆ addTrackLink()

void xAOD::AFPSiHit_v1::addTrackLink ( const AFPTrackLink_t & newTrack )

Add a link to a track that uses this hit in reconstruction.

A new link to the track is added to the existing vector of links to the tracks which use this hit in reconstruction.

Parameters

newTrack link to the track

Definition at line 38 of file AFPSiHit_v1.cxx.

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

◆ depositedCharge()

float xAOD::AFPSiHit_v1::depositedCharge ( ) const

Charge deposited in the pixel.

Charge deposited in the pixel (amplitude of the signal) calculated based on the time over threshold. Time over threshold should be proportional to the deposited charge, but there may be small deviations.

Returns: charge deposited in the pixel

◆ pixelColIDChip()

int xAOD::AFPSiHit_v1::pixelColIDChip ( ) const

Index of the pixel column in chip coordinate system.

Index of the column in chip coordinate system. There are 80 columns numbered from 1. Column number 1 is the bottom one, while column 80 is the topmost one.

Note: Columns in chip coordinate system are horizontal, because the chips are mounted rotated by 90 degrees.

Returns: index of the pixel column which is in horizontal direction

◆ pixelHorizID()

int xAOD::AFPSiHit_v1::pixelHorizID ( ) const

Index of the pixel along X axis in LHC coordinate system.

There are 336 pixels in the horizontal direction numbered from

The numbering is according to the LHC coordinate system i.e. pixel 0 is the outermost pixel and pixel 335 is the innermost (closest to the LHC centre).

This method transforms index from the chip coordinate system to the LHC coordinate system.

Returns: index of the pixel along X axis in LHC coordinate system

Definition at line 51 of file AFPSiHit_v1.cxx.

  {
    // use pixel rows because detectors are rotated and subtract
    // from 336, because the axis is reversed
    return 336 - pixelRowIDChip();
  }

◆ pixelLayerID()

int xAOD::AFPSiHit_v1::pixelLayerID ( ) const

Index of the layer of pixels, i.e.

the silicon detector, with hit.

Index of the pixel layer where the hit was recorded. The layer closest to the interaction point has index 0, the layer furthest away from the interaction point has index 3.

Far Station A Side (ID = 0)					Near Station A Side (ID = 1)					Near Station C Side (ID = 2)					Far Station C Side (ID = 3)
3	2	1	0		3	2	1	0	INTERACTION POINT	0	1	2	3		0	1	2	3

Returns: index of the pixels layer with hit

◆ pixelRowIDChip()

int xAOD::AFPSiHit_v1::pixelRowIDChip ( ) const

Index of the pixel row in chip coordinate system.

Index of the row in chip coordinate system. There are 336 rows numbered from 1. Row number 1 is closest to the LHC centre, while row 336 is the outermost.

Note: Rows in chip coordinate system are vertical, because the chips are mounted rotated by 90 degrees.

Returns: index of the pixel row which is in vertical direction

◆ pixelVertID()

int xAOD::AFPSiHit_v1::pixelVertID ( ) const

Index of the pixel along Y axis in LHC coordinate system.

There are 80 pixels in the vertical direction numbered from

The numbering is according to the LHC coordinate system i.e. pixel 0 is the lowest and pixel 79 is the topmost.

This method transforms index from the chip coordinate system to the LHC coordinate system.

Returns: index of the pixel along Y axis in LHC coordinate system

Definition at line 66 of file AFPSiHit_v1.cxx.

  {
    // use pixel columns because detectors are rotated
    return pixelColIDChip();
  }

◆ setDepositedCharge()

void xAOD::AFPSiHit_v1::setDepositedCharge ( float charge )

Method setting value of the charge deposited in the pixel.

Parameters

charge value of the charge deposited in the pixel

◆ setPixelColIDChip()

void xAOD::AFPSiHit_v1::setPixelColIDChip ( int colID )

Set pixel column index in the chip coordinate system.

Index of the column in chip coordinate system can have value between 1 and 80. Column number 1 is the bottom one, while column 80 is the topmost one.

Note: Columns in chip coordinate system are horizontal, because the chips are mounted rotated by 90 degrees.

Parameters

colID index of pixel column in chip coordinate system to be assigned to the hit

◆ setPixelHorizID()

void xAOD::AFPSiHit_v1::setPixelHorizID ( const int horizontalID )

Set index of the pixel along X axis in LHC coordinate system.

There are 336 pixels in the horizontal direction numbered from

The numbering is according to the LHC coordinate system i.e. pixel 0 is the outermost pixel and pixel 335 is the inner most (closest to the LHC centre).

This method transforms input from the LHC coordinate system to the chip coordinate system and saves it.

Parameters

horizontalID index of pixel along X axis in the LHC coordinate system

Definition at line 58 of file AFPSiHit_v1.cxx.

  {
    // use pixel rows because detectors are rotated and subtract
    // from 336, because the axis is reversed
    setPixelRowIDChip (336 - horizontalID);
  }

◆ setPixelLayerID()

void xAOD::AFPSiHit_v1::setPixelLayerID ( int layerID )

Method setting index of the pixel layer with hit.

The index of the layer should be set according to the convention in pixelLayerID()

Parameters

layerID index of the pixel layer with hit

◆ setPixelRowIDChip()

void xAOD::AFPSiHit_v1::setPixelRowIDChip ( int rowID )

Set pixel row index in the chip coordinate system.

Index of the row in chip coordinate system can have value between 1 and 336. Row number 1 is closest to the LHC centre, while row 336 is the outermost.

Note: Rows in chip coordinate system are vertical, because the chips are mounted rotated by 90 degrees.

Parameters

rowID index of pixel row in chip coordinate system to be assigned to the hit

◆ setPixelVertID()

void xAOD::AFPSiHit_v1::setPixelVertID ( const int verticalID )

Set index of the pixel along Y axis in LHC coordinate system.

There are 80 pixels in the horizontal direction numbered from

The numbering is according to the LHC coordinate system i.e. pixel 0 is the lowest and pixel 79 is the topmost.

This method transforms input from the LHC coordinate system to the chip coordinate system and saves it.

Parameters

verticalID index of pixel along Y axis in the LHC coordinate system

Definition at line 72 of file AFPSiHit_v1.cxx.

  {
    // use pixel columns because detectors are rotated
    setPixelColIDChip (verticalID);
  }

◆ setStationID()

void xAOD::AFPSiHit_v1::setStationID ( int stationID )

Set index of the station with pixel hit.

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 with the hit

◆ setTimeOverThreshold()

void xAOD::AFPSiHit_v1::setTimeOverThreshold ( float timeOverThreshold )

Method setting value of time over threshold.

Parameters

timeOverThreshold value of the time over threshold for a pixel

◆ setTracksLinks()

void xAOD::AFPSiHit_v1::setTracksLinks ( const std::vector< AFPTrackLink_t > & tracksVector )

Set vector of links to tracks that use this hit.

Parameters

tracksVector vector of links to tracks

◆ stationID()

int xAOD::AFPSiHit_v1::stationID ( ) const

Index of the station with pixel hit.

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

◆ timeOverThreshold()

float xAOD::AFPSiHit_v1::timeOverThreshold ( ) const

Time over threshold of signal for a pixel.

The length of the signal is proportional to the charge deposited in the pixel. The transformation is configured during the detector running and requires calibration. This is basic quantity which is used to reconstruct charge deposited in the pixel.

Returns: time over threshold of the signal

◆ toPersistent()

void xAOD::AFPSiHit_v1::toPersistent ( )

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

Definition at line 43 of file AFPSiHit_v1.cxx.

                                 {
    // Prepare the tracks links for persistification:
    if ( tracksLinksAcc.isAvailableWritable( *this ) )
      for (AFPTrackLink_t trackLink : tracksLinksAcc( *this ) )
        trackLink.toPersistent();
  }

◆ tracksLinks()

const std::vector< AFPTrackLink_t > & xAOD::AFPSiHit_v1::tracksLinks ( ) const

Vector of links to tracks for which reconstruction this hit was used.

This method provides access to the tracks that use this hit. The access is via ElementLink object.

Note

It can be checked if the link is active using method ElementLink::isValid()
A pointer to the xAOD::AFPTrack object can be retrieved using asterisk operator e.g.
xAOD::AFPTrack* track = *(tracks().at(0));

xAOD::AFPTrack
AFPTrack_v2 AFPTrack
Definition AFPTrack.h:12

xAOD::track
@ track
Definition TrackingPrimitives.h:513

Returns

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

Public Types

Public Member Functions

Detailed Description

Member Typedef Documentation

◆ AFPTrackLink_t

Constructor & Destructor Documentation

◆ AFPSiHit_v1()

Member Function Documentation

◆ addTrackLink()

◆ depositedCharge()

◆ pixelColIDChip()

◆ pixelHorizID()

◆ pixelLayerID()

◆ pixelRowIDChip()

◆ pixelVertID()

◆ setDepositedCharge()

◆ setPixelColIDChip()

◆ setPixelHorizID()

◆ setPixelLayerID()

◆ setPixelRowIDChip()

◆ setPixelVertID()

◆ setStationID()

◆ setTimeOverThreshold()

◆ setTracksLinks()

◆ stationID()

◆ timeOverThreshold()

◆ toPersistent()

◆ tracksLinks()