TrackerSeedCleaner Class Reference

#include <TrackerSeedCleaner.h>

Public Types
typedef std::vector< TrajectorySeed >	tkSeeds

Public Member Functions
virtual void	clean (const reco::TrackRef &, const RectangularEtaPhiTrackingRegion &region, tkSeeds &)
	the cleaner More...
virtual void	init (const MuonServiceProxy *service)
	intizialization More...
virtual void	setEvent (const edm::Event &)
	setEvent More...
	TrackerSeedCleaner (const edm::ParameterSet &pset, edm::ConsumesCollector &iC)
	constructor More...
virtual	~TrackerSeedCleaner ()
	destructor More...

Private Attributes
edm::EDGetTokenT< reco::BeamSpot >	beamspotToken_
edm::Handle< reco::BeamSpot >	bsHandle_
std::string	builderName_
bool	cleanBySharedHits
edm::InputTag	theBeamSpotTag
const edm::Event *	theEvent
const MuonServiceProxy *	theProxyService
RedundantSeedCleaner *	theRedundantCleaner
edm::ESHandle< TransientTrackingRecHitBuilder >	theTTRHBuilder
bool	useDirection_Cleaner
bool	usePt_Cleaner

Detailed Description

Seeds Cleaner based on direction

Author

A. Grelli - Purdue University, Pavia University

Definition at line 38 of file TrackerSeedCleaner.h.

Member Typedef Documentation

typedef std::vector<TrajectorySeed> TrackerSeedCleaner::tkSeeds

Definition at line 40 of file TrackerSeedCleaner.h.

Constructor & Destructor Documentation

TrackerSeedCleaner::TrackerSeedCleaner ( const edm::ParameterSet &  pset, edm::ConsumesCollector &  iC  )

inline

constructor

Definition at line 42 of file TrackerSeedCleaner.h.

References edm::ConsumesCollector::consumes(), edm::ParameterSet::getParameter(), init, and AlCaHLTBitMon_QueryRunRegistry::string.

      : theProxyService(nullptr), theEvent(nullptr) {
    builderName_ = pset.getParameter<std::string>("TTRHBuilder");
    theBeamSpotTag = pset.getParameter<edm::InputTag>("beamSpot");
    useDirection_Cleaner = pset.getParameter<bool>("directionCleaner");
    usePt_Cleaner = pset.getParameter<bool>("ptCleaner");
    cleanBySharedHits = pset.getParameter<bool>("cleanerFromSharedHits");
    beamspotToken_ = iC.consumes<reco::BeamSpot>(theBeamSpotTag);
  }

virtual TrackerSeedCleaner::~TrackerSeedCleaner ( )

inlinevirtual

destructor

Definition at line 56 of file TrackerSeedCleaner.h.

References clean(), and HLT_2018_cff::region.

{}

Member Function Documentation

void TrackerSeedCleaner::clean ( const reco::TrackRef &  muR, const RectangularEtaPhiTrackingRegion &  region, tkSeeds &  seeds  )

virtual

the cleaner

Definition at line 57 of file TrackerSeedCleaner.cc.

References SiPixelRawToDigiRegional_cfi::deltaPhi, TrackingRegion::direction(), PV3DBase< T, PVType, FrameType >::eta(), generateTowerEtThresholdLUT::etaRange, RectangularEtaPhiTrackingRegion::etaRange(), TrajectoryStateOnSurface::freeState(), TrajectoryStateOnSurface::globalMomentum(), LogDebug, PV3DBase< T, PVType, FrameType >::perp(), PV3DBase< T, PVType, FrameType >::phi(), RectangularEtaPhiTrackingRegion::phiMargin(), TrackingRegion::ptMin(), ptMin, rpcPointValidation_cfi::recHit, mps_fire::result, TkTrackingRegionsMargin< T >::right(), SurveyInfoScenario_cff::seed, trajectoryStateTransform::transientState(), PV3DBase< T, PVType, FrameType >::x(), reco::BeamSpot::x0(), PV3DBase< T, PVType, FrameType >::y(), reco::BeamSpot::y0(), PV3DBase< T, PVType, FrameType >::z(), and reco::BeamSpot::z0().

                                               {
  // call the shared input cleaner
  if (cleanBySharedHits)
    theRedundantCleaner->define(seeds);

  theProxyService->eventSetup().get<TransientRecHitRecord>().get(builderName_, theTTRHBuilder);

  LogDebug("TrackerSeedCleaner") << seeds.size() << " trajectory seeds to the events before cleaning" << endl;

  //check the validity otherwise vertexing
  const reco::BeamSpot& bs = *bsHandle_;
  /*reco track and seeds as arguments. Seeds eta and phi are checked and 
   based on deviation from L2 eta and phi seed is accepted or not*/

  std::vector<TrajectorySeed> result;

  TSCBLBuilderNoMaterial tscblBuilder;
  // PerigeeConversions tspConverter;
  for (TrajectorySeedCollection::iterator seed = seeds.begin(); seed < seeds.end(); ++seed) {
    if (seed->nHits() < 2)
      continue;
    //get parameters and errors from the seed state
    TransientTrackingRecHit::RecHitPointer recHit = theTTRHBuilder->build(&*(seed->recHits().second - 1));
    TrajectoryStateOnSurface state = trajectoryStateTransform::transientState(
        seed->startingState(), recHit->surface(), theProxyService->magneticField().product());

    TrajectoryStateClosestToBeamLine tsAtClosestApproachSeed =
        tscblBuilder(*state.freeState(), bs);  //as in TrackProducerAlgorithms
    if (!tsAtClosestApproachSeed.isValid())
      continue;
    GlobalPoint vSeed1 = tsAtClosestApproachSeed.trackStateAtPCA().position();
    GlobalVector pSeed = tsAtClosestApproachSeed.trackStateAtPCA().momentum();
    GlobalPoint vSeed(vSeed1.x() - bs.x0(), vSeed1.y() - bs.y0(), vSeed1.z() - bs.z0());

    //eta,phi info from seeds
    double etaSeed = state.globalMomentum().eta();
    double phiSeed = pSeed.phi();

    //if the limits are too stringent rescale limits
    typedef PixelRecoRange<float> Range;
    typedef TkTrackingRegionsMargin<float> Margin;

    Range etaRange = region.etaRange();
    double etaLimit = (fabs(fabs(etaRange.max()) - fabs(etaRange.mean())) < 0.1)
                          ? 0.1
                          : fabs(fabs(etaRange.max()) - fabs(etaRange.mean()));

    Margin phiMargin = region.phiMargin();
    double phiLimit = (phiMargin.right() < 0.1) ? 0.1 : phiMargin.right();

    double ptSeed = pSeed.perp();
    double ptMin = (region.ptMin() > 3.5) ? 3.5 : region.ptMin();
    // Clean
    bool inEtaRange = etaSeed >= (etaRange.mean() - etaLimit) && etaSeed <= (etaRange.mean() + etaLimit);
    bool inPhiRange = (fabs(deltaPhi(phiSeed, double(region.direction().phi()))) < phiLimit);
    // pt cleaner
    bool inPtRange = ptSeed >= ptMin && ptSeed <= 2 * (muR->pt());

    // save efficiency don't clean triplets with pt cleaner
    if (seed->nHits() == 3)
      inPtRange = true;

    // use pt and angle cleaners
    if (inPtRange && usePt_Cleaner && !useDirection_Cleaner) {
      result.push_back(*seed);
      LogDebug("TrackerSeedCleaner") << " Keeping the seed : this seed passed pt selection";
    }

    // use only angle default option
    if (inEtaRange && inPhiRange && !usePt_Cleaner && useDirection_Cleaner) {
      result.push_back(*seed);
      LogDebug("TrackerSeedCleaner") << " Keeping the seed : this seed passed direction selection";
    }

    // use all the cleaners
    if (inEtaRange && inPhiRange && inPtRange && usePt_Cleaner && useDirection_Cleaner) {
      result.push_back(*seed);
      LogDebug("TrackerSeedCleaner") << " Keeping the seed : this seed passed direction and pt selection";
    }

    LogDebug("TrackerSeedCleaner") << " eta for current seed " << etaSeed << "\n"
                                   << " phi for current seed " << phiSeed << "\n"
                                   << " eta for L2 track  " << muR->eta() << "\n"
                                   << " phi for L2 track  " << muR->phi() << "\n";
  }

  //the new seeds collection
  if (!result.empty() && (useDirection_Cleaner || usePt_Cleaner))
    seeds.swap(result);

  LogDebug("TrackerSeedCleaner") << seeds.size() << " trajectory seeds to the events after cleaning" << endl;

  return;
}

void TrackerSeedCleaner::init ( const MuonServiceProxy *  service )

virtual

intizialization

Definition at line 43 of file TrackerSeedCleaner.cc.

References HLT_2018_cff::RedundantSeedCleaner.

                                                             {
  theProxyService = service;

  theRedundantCleaner = new RedundantSeedCleaner();
}

void TrackerSeedCleaner::setEvent ( const edm::Event &  event )

virtual

setEvent

Definition at line 52 of file TrackerSeedCleaner.cc.

{ event.getByToken(beamspotToken_, bsHandle_); }

Member Data Documentation

edm::EDGetTokenT<reco::BeamSpot> TrackerSeedCleaner::beamspotToken_

private

Definition at line 68 of file TrackerSeedCleaner.h.

edm::Handle<reco::BeamSpot> TrackerSeedCleaner::bsHandle_

private

Definition at line 67 of file TrackerSeedCleaner.h.

std::string TrackerSeedCleaner::builderName_

private

Definition at line 71 of file TrackerSeedCleaner.h.

bool TrackerSeedCleaner::cleanBySharedHits

private

Definition at line 73 of file TrackerSeedCleaner.h.

edm::InputTag TrackerSeedCleaner::theBeamSpotTag

private

Definition at line 66 of file TrackerSeedCleaner.h.

const edm::Event* TrackerSeedCleaner::theEvent

private

Definition at line 64 of file TrackerSeedCleaner.h.

const MuonServiceProxy* TrackerSeedCleaner::theProxyService

private

Definition at line 63 of file TrackerSeedCleaner.h.

RedundantSeedCleaner* TrackerSeedCleaner::theRedundantCleaner

private

Definition at line 69 of file TrackerSeedCleaner.h.

edm::ESHandle<TransientTrackingRecHitBuilder> TrackerSeedCleaner::theTTRHBuilder

private

Definition at line 72 of file TrackerSeedCleaner.h.

bool TrackerSeedCleaner::useDirection_Cleaner

private

Definition at line 73 of file TrackerSeedCleaner.h.

bool TrackerSeedCleaner::usePt_Cleaner

private

Definition at line 73 of file TrackerSeedCleaner.h.