PXDClusterPositionEstimator Class Reference

Singleton class that estimates cluster positions taking into account the estimated track incidence angles into the sensor. More...

#include <PXDClusterPositionEstimator.h>

Collaboration diagram for PXDClusterPositionEstimator:

Public Member Functions
void	initialize ()
	Initialize PXDClusterPositionEstimator from DB.
void	setShapeIndexFromDB ()
	Set ShapeIndex from DB.
void	setPositionEstimatorFromDB ()
	Set PositionEstimator from DB.
const PXDClusterPositionEstimatorPar &	getPositionEstimatorParameters () const
	Return cluster position estimator parameters from Database.
const PXDClusterShapeIndexPar &	getShapeIndexParameters () const
	Return shape index parameters from Database.
const PXDClusterOffsetPar *	getClusterOffset (const PXDCluster &cluster, double tu, double tv) const
	Return pointer to cluster offsets, can be nullptr.
float	getShapeLikelyhood (const PXDCluster &cluster, double tu, double tv) const
	Return cluster shape likelyhood.
float	computeEta (const std::set< Pixel > &pixels, int vStart, int vSize, double thetaU, double thetaV) const
	Return the normed charge ratio between head and tail pixels (size>=2) or the charge of the seed (size=1) .
int	computeShapeIndex (const std::set< Pixel > &pixels, int uStart, int vStart, int vSize, double thetaU, double thetaV) const
	Return the shape index of the pixels.
const std::string	getShortName (const std::set< Pixel > &pixels, int uStart, int vStart, int vSize, double thetaU, double thetaV) const
	Return the name for the pixel set.
const std::string	getMirroredShortName (const std::set< Pixel > &pixels, int uStart, int vStart, int vSize, double thetaU, double thetaV) const
	Return the mirrored name for the pixel set.
const std::string	getFullName (const std::set< Pixel > &pixels, int uStart, int vStart) const
	Return a name for the pixel set.
int	getClusterkind (const PXDCluster &cluster) const
	Return kind of cluster needed to find cluster position correction.
int	getClusterkind (const std::vector< Belle2::PXD::Pixel > &pixels, const Belle2::VxdID &sensorID) const
	Return kind of cluster needed to find cluster position correction.
int	getSectorIndex (double thetaU, double thetaV) const
	Get sector index from angles. More...

Static Public Member Functions
static PXDClusterPositionEstimator &	getInstance ()
	Main (and only) way to access the PXDClusterPositionEstimator.

Private Member Functions
const Pixel &	getHeadPixel (const std::set< Pixel > &pixels, int vStart, int vSize, double thetaU, double thetaV) const
	Return reference to the head pixel in pixel set.
const Pixel &	getTailPixel (const std::set< Pixel > &pixels, int vStart, int vSize, double thetaU, double thetaV) const
	Return reference to the tail pixel in pixel set.
const Pixel &	getLastPixelWithVOffset (const std::set< Pixel > &pixels, int vStart, int vOffset) const
	Return reference to the last pixel in pixel set with given vOffset from vStart.
const Pixel &	getFirstPixelWithVOffset (const std::set< Pixel > &pixels, int vStart, int vOffset) const
	Return reference to the first pixel in pixel set with given vOffset from vStart.
	PXDClusterPositionEstimator ()
	Singleton class, hidden constructor.
	PXDClusterPositionEstimator (const PXDClusterPositionEstimator &)=delete
	Singleton class, forbidden copy constructor.
PXDClusterPositionEstimator &	operator= (const PXDClusterPositionEstimator &)=delete
	Singleton class, forbidden assignment operator.

Private Attributes
std::unique_ptr< DBObjPtr< PXDClusterShapeIndexPar > >	m_shapeIndexFromDB
	PXDClusterShapeIndex retrieved from DB.
std::unique_ptr< DBObjPtr< PXDClusterPositionEstimatorPar > >	m_positionEstimatorFromDB
	PXDClusterPositionEstimatorPar retrieved from DB.
PXDClusterShapeIndexPar	m_shapeIndexPar
	Current valid PXDClusterShapeIndex.
PXDClusterPositionEstimatorPar	m_positionEstimatorPar
	Currrent valid PXDClusterPositionEstimatorPar.

Detailed Description

Singleton class that estimates cluster positions taking into account the estimated track incidence angles into the sensor.

The class also provides an interface to get the likelyhood that a given cluster was created by a charged track with given incidence angles.

Definition at line 33 of file PXDClusterPositionEstimator.h.

Member Function Documentation

getSectorIndex()

int getSectorIndex	(	double	thetaU,
		double	thetaV
	)		const

Get sector index from angles.

Sectors in thetaU and thetaV are numbered ++, -+, –, +-.

Definition at line 291 of file PXDClusterPositionEstimator.cc.

{
  int sectorIndex = 0;
  if (thetaU >= 0) {
    if (thetaV >= 0) {
      sectorIndex = 0;
    } else {
      sectorIndex = 3;
    }
  } else {
    if (thetaV >= 0) {
      sectorIndex = 1;
    } else {
      sectorIndex = 2;
    }
  }
  return sectorIndex;
}

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

• pxd/reconstruction/include/PXDClusterPositionEstimator.h
• pxd/reconstruction/src/PXDClusterPositionEstimator.cc