SiStripCluster Class Reference

#include <SiStripCluster.h>

Public Types
typedef std::vector < SiStripDigi > ::const_iterator	SiStripDigiIter
typedef std::pair < SiStripDigiIter, SiStripDigiIter >	SiStripDigiRange

Public Member Functions
const std::vector< uint8_t > &	amplitudes () const
float	barycenter () const
uint16_t	firstStrip () const
uint32_t	geographicalId () const
float	getSplitClusterError () const
void	setId (uint32_t id)
void	setSplitClusterError (float errx)
	SiStripCluster ()
	SiStripCluster (uint32_t detid, const SiStripDigiRange &range)
	SiStripCluster (const uint32_t &detid, const uint16_t &firstStrip, std::vector< uint16_t >::const_iterator begin, std::vector< uint16_t >::const_iterator end)

Private Attributes
std::vector< uint8_t >	amplitudes_
uint32_t	detId_
float	error_x
uint16_t	firstStrip_

Detailed Description

Definition at line 9 of file SiStripCluster.h.

Member Typedef Documentation

typedef std::vector<SiStripDigi>::const_iterator SiStripCluster::SiStripDigiIter

Definition at line 12 of file SiStripCluster.h.

typedef std::pair<SiStripDigiIter,SiStripDigiIter> SiStripCluster::SiStripDigiRange

Definition at line 13 of file SiStripCluster.h.

Constructor & Destructor Documentation

SiStripCluster::SiStripCluster ( )

inline

Construct from a range of digis that form a cluster and from a DetID. The range is assumed to be non-empty.

Definition at line 19 of file SiStripCluster.h.

: detId_(0), error_x( -99999.9 ) {}

SiStripCluster::SiStripCluster	(	uint32_t	detid,
		const SiStripDigiRange &	range
	)

check if digis consecutive

Definition at line 4 of file SiStripCluster.cc.

References amplitudes_, i, and j.

                                                                             :
  //detId_(detid),
  detId_(0),
  firstStrip_(range.first->strip()),
  error_x(-99999.9)
{

  amplitudes_.reserve( range.second - range.first);
  
  uint16_t lastStrip=0;
  bool firstInloop = true;
  for (SiStripDigiIter i=range.first; i!=range.second; i++) {
    
    if (!firstInloop && i->strip() != lastStrip + 1) {
      for (int j=0; j < i->strip()-(lastStrip+1); j++) {
    amplitudes_.push_back( 0);
      }
    }
    lastStrip = i->strip();
    firstInloop = false;
    
    amplitudes_.push_back(i->adc()); 
  }
}

SiStripCluster::SiStripCluster	(	const uint32_t &	detid,
		const uint16_t &	firstStrip,
		std::vector< uint16_t >::const_iterator	begin,
		std::vector< uint16_t >::const_iterator	end
	)

Definition at line 30 of file SiStripCluster.cc.

                                                          :

  //  detId_(detid),
  detId_(0),
  firstStrip_(firstStrip),
  amplitudes_(begin,end),

  // ggiurgiu@fnal.gov, 01/05/12
  // Initialize the split cluster errors to un-physical values.
  // The CPE will check these errors and if they are not un-physical,
  // it will recognize the clusters as split and assign these (increased)
  // errors to the corresponding rechit.
  error_x(-99999.9)
{}

Member Function Documentation

const std::vector<uint8_t>& SiStripCluster::amplitudes ( ) const

inline

The amplitudes of the strips forming the cluster. The amplitudes are on consecutive strips; if a strip is missing the amplitude is set to zero. A strip may be missing in the middle of a cluster because of a clusterizer that accepts holes. A strip may also be missing anywhere in the cluster, including the edge, to record a dead/noisy channel.

You can find the special meanings of values { 0, 254, 255} in section 3.4.1 of http://www.te.rl.ac.uk/esdg/cms-fed/firmware/Documents/FE_FPGA_Technical_Description.pdf

Definition at line 53 of file SiStripCluster.h.

References amplitudes_.

Referenced by TrackerHitAssociator::associateSimpleRecHitCluster(), SimpleCosmicBONSeeder::checkCharge(), DeDxDiscriminatorProducer::ClusterSaturatingStrip(), ClusterVariables::clusterSize(), SiStripGainFromData::ComputeChargeOverPath(), DeDxEstimatorProducer::getCharge(), DeDxDiscriminatorProducer::GetProbability(), ClusterShapeHitFilter::getSizes(), SiStripRecHitConverterAlgorithm::isMasked(), StMeasurementDetSet::isMasked(), CalibrationTrackSelector::isOkCharge(), DeDxDiscriminatorLearner::Learn(), StripCPEfromTrackAngle::localParameters(), StripCPEgeometric::localParameters(), StripCPEfromTemplate::localParameters(), PrintRecoObjects::print(), ClusterTPAssociationProducer::produce(), ShallowGainCalibration::produce(), jptJetAnalysis::StripSignalOverNoiseCalculator::signalOverNoise(), TrackClusterSplitter::splitCluster(), ClusterVariables::stripCharges(), SiStripClusterInfo::stripCharges(), and SiStripClusterInfo::width().

{return amplitudes_;}

float SiStripCluster::barycenter

(

)

const

The barycenter of the cluster, not corrected for Lorentz shift; should not be used as position estimate for tracking.

Definition at line 48 of file SiStripCluster.cc.

References amplitudes_, firstStrip_, and i.

Referenced by SiStripClusterInfo::baryStrip(), SiStripFineDelayHit::closestCluster(), SiStripRecHitConverterAlgorithm::isMasked(), StMeasurementDetSet::isMasked(), StripCPEfromTrackAngle::localParameters(), StripCPEfromTemplate::localParameters(), StripCPE::localParameters(), PrintRecoObjects::print(), and TrackClusterSplitter::splitCluster().

                                      {
  int sumx = 0;
  int suma = 0;
  size_t asize = amplitudes_.size();
  for (size_t i=0;i<asize;++i) {
    sumx += (firstStrip_+i)*(amplitudes_[i]);
    suma += amplitudes_[i];
  }
  
  // strip centers are offcet by half pitch w.r.t. strip numbers,
  // so one has to add 0.5 to get the correct barycenter position
  return sumx / static_cast<float>(suma) + 0.5;
}

uint16_t SiStripCluster::firstStrip ( ) const

inline

The number of the first strip in the cluster

Definition at line 30 of file SiStripCluster.h.

References firstStrip_.

Referenced by fireworks::addSiStripClusters(), TrackerHitAssociator::associateSimpleRecHitCluster(), SimpleCosmicBONSeeder::checkCharge(), SiStripGainFromData::ComputeChargeOverPath(), SiStripClusterInfo::firstStrip(), ClusterShapeHitFilter::getSizes(), SiStripRecHitConverterAlgorithm::isMasked(), StMeasurementDetSet::isMasked(), DeDxDiscriminatorLearner::Learn(), StripCPEgeometric::localParameters(), StripCPEfromTemplate::localParameters(), FastStripCPE::localParameters(), shallow::make_cluster_map(), operator<(), PrintRecoObjects::print(), ShallowTrackClustersProducer::produce(), ClusterTPAssociationProducer::produce(), ShallowGainCalibration::produce(), jptJetAnalysis::StripSignalOverNoiseCalculator::signalOverNoise(), and TrackClusterSplitter::splitCluster().

{return firstStrip_;}

uint32_t SiStripCluster::geographicalId ( ) const

inline

The geographical ID of the corresponding DetUnit, to be used for transformations to local and to global reference frames etc.

Definition at line 36 of file SiStripCluster.h.

References detId_.

Referenced by TrackerHitAssociator::associateSimpleRecHit(), TrackerHitAssociator::associateSiStripRecHit1D(), SiStripGainFromData::ComputeChargeOverPath(), DeDxDiscriminatorLearner::Learn(), FastStripCPE::localParameters(), operator<(), DeDxDiscriminatorProducer::produce(), and ShallowGainCalibration::produce().

                                  {
    if (detId_==0) edm::LogError("Deprecation")<<"this method will give zero offline";
    return detId_;
  }

float SiStripCluster::getSplitClusterError ( ) const

inline

Definition at line 60 of file SiStripCluster.h.

References error_x.

Referenced by StripCPEfromTemplate::localParameters().

{  return error_x;  }

void SiStripCluster::setId ( uint32_t  id )

inline

Definition at line 40 of file SiStripCluster.h.

References detId_.

{ detId_=id; }

void SiStripCluster::setSplitClusterError ( float  errx )

inline

Definition at line 61 of file SiStripCluster.h.

References error_x.

Referenced by TrackClusterSplitter::splitCluster().

{ error_x = errx; }

Member Data Documentation

std::vector<uint8_t> SiStripCluster::amplitudes_

private

Definition at line 69 of file SiStripCluster.h.

Referenced by amplitudes(), barycenter(), and SiStripCluster().

uint32_t SiStripCluster::detId_

private

Definition at line 66 of file SiStripCluster.h.

Referenced by geographicalId(), and setId().

float SiStripCluster::error_x

private

Definition at line 79 of file SiStripCluster.h.

Referenced by getSplitClusterError(), and setSplitClusterError().

uint16_t SiStripCluster::firstStrip_

private

Definition at line 67 of file SiStripCluster.h.

Referenced by barycenter(), and firstStrip().