hiPixelPairStep_cff.py

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import FWCore.ParameterSet.Config as cms



# NEW CLUSTERS (remove previously used clusters)
hiPixelPairClusters = cms.EDProducer("HITrackClusterRemover",
                                     clusterLessSolution= cms.bool(True),
                                     oldClusterRemovalInfo = cms.InputTag("hiLowPtTripletStepClusters"),
                                     trajectories = cms.InputTag("hiLowPtTripletStepTracks"),
                                     overrideTrkQuals = cms.InputTag('hiLowPtTripletStepSelector','hiLowPtTripletStep'),
                                     TrackQuality = cms.string('highPurity'),
                                     minNumberOfLayersWithMeasBeforeFiltering = cms.int32(0),
                                     pixelClusters = cms.InputTag("siPixelClusters"),
                                     stripClusters = cms.InputTag("siStripClusters"),
                                     Common = cms.PSet(
    maxChi2 = cms.double(9.0),
    ),
                                     Strip = cms.PSet(
    maxChi2 = cms.double(9.0),
    #Yen-Jie's mod to preserve merged clusters
    maxSize = cms.uint32(2)
    )
                                     )


# SEEDING LAYERS
import RecoTracker.TkSeedingLayers.PixelLayerPairs_cfi
hiPixelPairSeedLayers = RecoTracker.TkSeedingLayers.PixelLayerPairs_cfi.PixelLayerPairs.clone(
     layerList = ['BPix1+BPix2', 'BPix1+BPix3', 'BPix2+BPix3',
                  'BPix1+FPix1_pos', 'BPix1+FPix1_neg',
                  'BPix2+FPix1_pos', 'BPix2+FPix1_neg',
                  'FPix1_pos+FPix2_pos', 'FPix1_neg+FPix2_neg'],
     BPix = cms.PSet(
         TTRHBuilder = cms.string('TTRHBuilderWithoutAngle4PixelPairs'),
         HitProducer = cms.string('siPixelRecHits'),
         skipClusters = cms.InputTag('hiPixelPairClusters')
     ),
     FPix = cms.PSet(
         TTRHBuilder = cms.string('TTRHBuilderWithoutAngle4PixelPairs'),
         HitProducer = cms.string('siPixelRecHits'),
         skipClusters = cms.InputTag('hiPixelPairClusters')
     )
)
from Configuration.Eras.Modifier_trackingPhase1_cff import trackingPhase1
trackingPhase1.toModify(hiPixelPairSeedLayers,
    layerList = ['BPix1+BPix4','BPix1+FPix1_pos','BPix1+FPix1_neg']  #only use first and fourth barrel layers or first barrel and first forward layer around area where BPIX2+3 are inactive
)

# SEEDS
import RecoTracker.TkSeedGenerator.GlobalSeedsFromPairsWithVertices_cff
hiPixelPairSeeds = RecoTracker.TkSeedGenerator.GlobalSeedsFromPairsWithVertices_cff.globalSeedsFromPairsWithVertices.clone(
    RegionFactoryPSet = dict( 
        RegionPSet = dict(
            VertexCollection = "hiSelectedPixelVertex",
            ptMin = 1.0,
            originRadius = 0.005,
            nSigmaZ = 4.0,
            # sigmaZVertex is only used when usedFixedError is True -Matt
            sigmaZVertex = 4.0,
            useFixedError = False
        )
    ),
    OrderedHitsFactoryPSet = dict(
        SeedingLayers = 'hiPixelPairSeedLayers',
        maxElement = 5000000
    ),
    ClusterCheckPSet = dict(
        MaxNumberOfPixelClusters = 5000000,
        MaxNumberOfCosmicClusters = 50000000,
        cut = ""
    ),
    SeedComparitorPSet = cms.PSet(
        ComponentName = cms.string('PixelClusterShapeSeedComparitor'),
        FilterAtHelixStage = cms.bool(True),
        FilterPixelHits = cms.bool(True),
        FilterStripHits = cms.bool(False),
        ClusterShapeHitFilterName = cms.string('ClusterShapeHitFilter'),
        ClusterShapeCacheSrc = cms.InputTag("siPixelClusterShapeCache")
    )
)
#rectangular tracking region around area missing BPIX2/3 in Phase 1
from RecoTracker.TkTrackingRegions.pointSeededTrackingRegion_cfi import pointSeededTrackingRegion as _pointSeededTrackingRegion
hiPixelPairStepTrackingRegionPhase1 = _pointSeededTrackingRegion.clone(
    RegionPSet = dict(
        ptMin = 0.9,
        originRadius = 0.005,
        mode = "VerticesSigma",
        nSigmaZVertex = 4.0,
        vertexCollection = "hiSelectedPixelVertex",
        beamSpot = "offlineBeamSpot",
        whereToUseMeasurementTracker = "Never",
        deltaEta = 1.8,
        deltaPhi = 0.5,
        points = dict(
            eta = [0.0],
            phi = [3.0],
        )
    )
)

from RecoTracker.TkHitPairs.hitPairEDProducer_cfi import hitPairEDProducer as _hitPairEDProducer
hiPixelPairStepHitDoubletsPhase1 = _hitPairEDProducer.clone(
    seedingLayers = "hiPixelPairSeedLayers",
    trackingRegions = "hiPixelPairStepTrackingRegionPhase1",
    clusterCheck = "",
    produceSeedingHitSets = True, 
)

from RecoTracker.TkSeedGenerator.seedCreatorFromRegionConsecutiveHitsEDProducer_cff import seedCreatorFromRegionConsecutiveHitsEDProducer as _seedCreatorFromRegionConsecutiveHitsEDProducer
hiPixelPairStepSeedsPhase1 = _seedCreatorFromRegionConsecutiveHitsEDProducer.clone(
    seedingHitSets = "hiPixelPairStepHitDoubletsPhase1",
    SeedComparitorPSet = dict(
        ComponentName = 'PixelClusterShapeSeedComparitor',
        FilterAtHelixStage = cms.bool(True),
        FilterPixelHits = cms.bool(True),
        FilterStripHits = cms.bool(False),
        ClusterShapeHitFilterName = cms.string('ClusterShapeHitFilter'),
        ClusterShapeCacheSrc = cms.InputTag('siPixelClusterShapeCache'),
    )
)

# QUALITY CUTS DURING TRACK BUILDING
import TrackingTools.TrajectoryFiltering.TrajectoryFilter_cff
hiPixelPairTrajectoryFilter = TrackingTools.TrajectoryFiltering.TrajectoryFilter_cff.CkfBaseTrajectoryFilter_block.clone(
    #maxLostHits = 0,
    minimumNumberOfHits = 6,
    minPt = 1.0
)

import TrackingTools.KalmanUpdators.Chi2MeasurementEstimator_cfi
hiPixelPairChi2Est = TrackingTools.KalmanUpdators.Chi2MeasurementEstimator_cfi.Chi2MeasurementEstimator.clone(
    ComponentName = 'hiPixelPairChi2Est',
    nSigma = 3.0,
    MaxChi2 = 9.0
)

# TRACK BUILDING
import RecoTracker.CkfPattern.GroupedCkfTrajectoryBuilder_cfi
hiPixelPairTrajectoryBuilder = RecoTracker.CkfPattern.GroupedCkfTrajectoryBuilder_cfi.GroupedCkfTrajectoryBuilder.clone(
    MeasurementTrackerName = '',
    trajectoryFilter = dict(refToPSet_ = 'hiPixelPairTrajectoryFilter'),
    maxCand = 3,
    estimator = 'hiPixelPairChi2Est',
    maxDPhiForLooperReconstruction = cms.double(2.0),
    maxPtForLooperReconstruction = cms.double(0.7)
)

# MAKING OF TRACK CANDIDATES
import RecoTracker.CkfPattern.CkfTrackCandidates_cfi
hiPixelPairTrackCandidates = RecoTracker.CkfPattern.CkfTrackCandidates_cfi.ckfTrackCandidates.clone(
    src = 'hiPixelPairSeeds',
    clustersToSkip = cms.InputTag('hiPixelPairClusters'),
    TrajectoryBuilderPSet = dict(refToPSet_ = 'hiPixelPairTrajectoryBuilder'),
    ### these two parameters are relevant only for the CachingSeedCleanerBySharedInput
    numHitsForSeedCleaner = cms.int32(50),
    onlyPixelHitsForSeedCleaner = cms.bool(True),
)
trackingPhase1.toModify(hiPixelPairTrackCandidates,
    src = 'hiPixelPairStepSeedsPhase1'
)

# TRACK FITTING
import RecoTracker.TrackProducer.TrackProducer_cfi
hiPixelPairGlobalPrimTracks = RecoTracker.TrackProducer.TrackProducer_cfi.TrackProducer.clone(
    AlgorithmName = 'pixelPairStep',
    src = 'hiPixelPairTrackCandidates',
    Fitter = 'FlexibleKFFittingSmoother'
)




# Final selection
import RecoHI.HiTracking.hiMultiTrackSelector_cfi
hiPixelPairStepSelector = RecoHI.HiTracking.hiMultiTrackSelector_cfi.hiMultiTrackSelector.clone(
    src = 'hiPixelPairGlobalPrimTracks',
    useAnyMVA = True,
    GBRForestLabel = 'HIMVASelectorIter6',
    GBRForestVars = ['chi2perdofperlayer', 'dxyperdxyerror', 'dzperdzerror', 'nhits', 'nlayers', 'eta'],
    trackSelectors= cms.VPSet(
    RecoHI.HiTracking.hiMultiTrackSelector_cfi.hiLooseMTS.clone(
        name = 'hiPixelPairStepLoose',
        useMVA = False
    ), #end of pset
    RecoHI.HiTracking.hiMultiTrackSelector_cfi.hiTightMTS.clone(
        name = 'hiPixelPairStepTight',
        preFilterName = 'hiPixelPairStepLoose',
        useMVA = True,
        minMVA = -0.58
    ),
    RecoHI.HiTracking.hiMultiTrackSelector_cfi.hiHighpurityMTS.clone(
        name = 'hiPixelPairStep',
        preFilterName = 'hiPixelPairStepTight',
        useMVA = True,
        minMVA = 0.77
    ),
    ) #end of vpset
) #end of clone
from Configuration.Eras.Modifier_trackingPhase1_cff import trackingPhase1
trackingPhase1.toModify(hiPixelPairStepSelector, 
    useAnyMVA = False,
    trackSelectors= cms.VPSet(
        RecoHI.HiTracking.hiMultiTrackSelector_cfi.hiLooseMTS.clone(
            name = 'hiPixelPairStepLoose',
            useMVA = False
        ), #end of pset
        RecoHI.HiTracking.hiMultiTrackSelector_cfi.hiTightMTS.clone(
            name = 'hiPixelPairStepTight',
            preFilterName = 'hiPixelPairStepLoose',
            useMVA = False,
            minMVA = -0.58
        ),
        RecoHI.HiTracking.hiMultiTrackSelector_cfi.hiHighpurityMTS.clone(
            name = 'hiPixelPairStep',
            preFilterName = 'hiPixelPairStepTight',
            useMVA = False,
            minMVA = 0.77
        ),
    ) #end of vpset
)

# Final sequence
hiPixelPairStepTask = cms.Task(hiPixelPairClusters,
                               hiPixelPairSeedLayers,
                               hiPixelPairSeeds,
                               hiPixelPairTrackCandidates,
                               hiPixelPairGlobalPrimTracks,
                               hiPixelPairStepSelector)
hiPixelPairStep = cms.Sequence(hiPixelPairStepTask)
hiPixelPairStep_Phase1 = hiPixelPairStepTask.copy()
hiPixelPairStep_Phase1.replace(hiPixelPairSeeds, cms.Task(hiPixelPairStepTrackingRegionPhase1,hiPixelPairStepHitDoubletsPhase1,hiPixelPairStepSeedsPhase1) )
trackingPhase1.toReplaceWith(hiPixelPairStepTask, hiPixelPairStep_Phase1)