Phase1PU140_DetachedQuadStep_cff.py

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import FWCore.ParameterSet.Config as cms

###############################################
# Low pT and detached tracks from pixel triplets
###############################################

# REMOVE HITS ASSIGNED TO GOOD TRACKS FROM PREVIOUS ITERATIONS
from RecoLocalTracker.SubCollectionProducers.trackClusterRemover_cfi import *
detachedQuadStepClusters = trackClusterRemover.clone(
    maxChi2                                  = cms.double(9.0),
    trajectories                             = cms.InputTag("lowPtTripletStepTracks"),
    pixelClusters                            = cms.InputTag("siPixelClusters"),
    stripClusters                            = cms.InputTag("siStripClusters"),
    oldClusterRemovalInfo                    = cms.InputTag("lowPtTripletStepClusters"),
    overrideTrkQuals                         = cms.InputTag('lowPtTripletStepSelector','lowPtTripletStep'),
    TrackQuality                             = cms.string('highPurity'),
    minNumberOfLayersWithMeasBeforeFiltering = cms.int32(0),
)

# SEEDING LAYERS
import RecoTracker.TkSeedingLayers.PixelLayerTriplets_cfi
detachedQuadStepSeedLayers = RecoTracker.TkSeedingLayers.PixelLayerTriplets_cfi.PixelLayerTriplets.clone(
    layerList = cms.vstring('BPix1+BPix2+BPix3', 'BPix2+BPix3+BPix4',
                            'BPix1+BPix3+BPix4', 'BPix1+BPix2+BPix4',
                            'BPix2+BPix3+FPix1_pos', 'BPix2+BPix3+FPix1_neg',
                            'BPix1+BPix2+FPix1_pos', 'BPix1+BPix2+FPix1_neg',
                            'BPix2+FPix1_pos+FPix2_pos', 'BPix2+FPix1_neg+FPix2_neg',
                            'BPix1+FPix1_pos+FPix2_pos', 'BPix1+FPix1_neg+FPix2_neg',
                            'FPix1_pos+FPix2_pos+FPix3_pos', 'FPix1_neg+FPix2_neg+FPix3_neg')
    )
detachedQuadStepSeedLayers.BPix.skipClusters = cms.InputTag('detachedQuadStepClusters')
detachedQuadStepSeedLayers.FPix.skipClusters = cms.InputTag('detachedQuadStepClusters')

# SEEDS
from RecoPixelVertexing.PixelTriplets.PixelTripletLargeTipGenerator_cfi import *
PixelTripletLargeTipGenerator.extraHitRZtolerance = 0.0
PixelTripletLargeTipGenerator.extraHitRPhitolerance = 0.0
import RecoTracker.TkSeedGenerator.GlobalSeedsFromTriplets_cff
from RecoTracker.TkTrackingRegions.GlobalTrackingRegionFromBeamSpot_cfi import RegionPsetFomBeamSpotBlock
from RecoPixelVertexing.PixelTriplets.quadrupletseedmerging_cff import *
detachedQuadStepSeeds = RecoTracker.TkSeedGenerator.GlobalSeedsFromTriplets_cff.globalSeedsFromTriplets.clone(
    RegionFactoryPSet = RegionPsetFomBeamSpotBlock.clone(
        ComponentName = cms.string('GlobalRegionProducerFromBeamSpot'),
        RegionPSet = RegionPsetFomBeamSpotBlock.RegionPSet.clone(
            ptMin = 0.5,
            originRadius = 0.5,
            nSigmaZ = 4.0
            )
    ),
    SeedMergerPSet = cms.PSet(
        layerList = cms.PSet(refToPSet_ = cms.string("PixelSeedMergerQuadruplets")),
    addRemainingTriplets = cms.bool(False),
    mergeTriplets = cms.bool(True),
    ttrhBuilderLabel = cms.string('PixelTTRHBuilderWithoutAngle')
    )
)
detachedQuadStepSeeds.OrderedHitsFactoryPSet.SeedingLayers = 'detachedQuadStepSeedLayers'
detachedQuadStepSeeds.OrderedHitsFactoryPSet.GeneratorPSet = cms.PSet(PixelTripletLargeTipGenerator)
detachedQuadStepSeeds.SeedCreatorPSet.ComponentName = 'SeedFromConsecutiveHitsTripletOnlyCreator'
detachedQuadStepSeeds.SeedComparitorPSet = cms.PSet(
        ComponentName = cms.string('PixelClusterShapeSeedComparitor'),
        FilterAtHelixStage = cms.bool(False),
        FilterPixelHits = cms.bool(True),
        FilterStripHits = cms.bool(False),
        ClusterShapeHitFilterName = cms.string('ClusterShapeHitFilter'),
        ClusterShapeCacheSrc = cms.InputTag('siPixelClusterShapeCache')
    )
detachedQuadStepSeeds.ClusterCheckPSet.doClusterCheck = cms.bool(False)
detachedQuadStepSeeds.OrderedHitsFactoryPSet.GeneratorPSet.maxElement = cms.uint32(0)
detachedQuadStepSeeds.SeedCreatorPSet.magneticField = ''
detachedQuadStepSeeds.SeedCreatorPSet.propagator = 'PropagatorWithMaterial'

# QUALITY CUTS DURING TRACK BUILDING
import TrackingTools.TrajectoryFiltering.TrajectoryFilter_cff
detachedQuadStepStandardTrajectoryFilter = TrackingTools.TrajectoryFiltering.TrajectoryFilter_cff.CkfBaseTrajectoryFilter_block.clone(
    maxLostHitsFraction = cms.double(1./10.),
    constantValueForLostHitsFractionFilter = cms.double(0.301),
    minimumNumberOfHits = 3,
    minPt = 0.075
    )

from RecoPixelVertexing.PixelLowPtUtilities.ClusterShapeTrajectoryFilter_cfi import *
# Composite filter
detachedQuadStepTrajectoryFilter = TrackingTools.TrajectoryFiltering.TrajectoryFilter_cff.CompositeTrajectoryFilter_block.clone(
    filters   = [cms.PSet(refToPSet_ = cms.string('detachedQuadStepStandardTrajectoryFilter')),
                 cms.PSet(refToPSet_ = cms.string('ClusterShapeTrajectoryFilter'))]
    )

import TrackingTools.KalmanUpdators.Chi2MeasurementEstimator_cfi
detachedQuadStepChi2Est = TrackingTools.KalmanUpdators.Chi2MeasurementEstimator_cfi.Chi2MeasurementEstimator.clone(
    ComponentName = cms.string('detachedQuadStepChi2Est'),
    nSigma = cms.double(3.0),
    MaxChi2 = cms.double(9.0)
)

# TRACK BUILDING
import RecoTracker.CkfPattern.GroupedCkfTrajectoryBuilder_cfi
detachedQuadStepTrajectoryBuilder = RecoTracker.CkfPattern.GroupedCkfTrajectoryBuilder_cfi.GroupedCkfTrajectoryBuilder.clone(
    MeasurementTrackerName = '',
    trajectoryFilter = cms.PSet(refToPSet_ = cms.string('detachedQuadStepTrajectoryFilter')),
    maxCand = 2,
    alwaysUseInvalidHits = False,
    estimator = cms.string('detachedQuadStepChi2Est'),
    maxDPhiForLooperReconstruction = cms.double(2.0),
    maxPtForLooperReconstruction = cms.double(0.7) 
    )

# MAKING OF TRACK CANDIDATES
import RecoTracker.CkfPattern.CkfTrackCandidates_cfi
detachedQuadStepTrackCandidates = RecoTracker.CkfPattern.CkfTrackCandidates_cfi.ckfTrackCandidates.clone(
    src = cms.InputTag('detachedQuadStepSeeds'),
    clustersToSkip = cms.InputTag('detachedQuadStepClusters'),
    ### these two parameters are relevant only for the CachingSeedCleanerBySharedInput
    numHitsForSeedCleaner = cms.int32(50),
    onlyPixelHitsForSeedCleaner = cms.bool(True),
    TrajectoryBuilderPSet = cms.PSet(refToPSet_ = cms.string('detachedQuadStepTrajectoryBuilder')),
    doSeedingRegionRebuilding = True,
    useHitsSplitting = True
    )

from TrackingTools.TrajectoryCleaning.TrajectoryCleanerBySharedHits_cfi import trajectoryCleanerBySharedHits
detachedQuadStepTrajectoryCleanerBySharedHits = trajectoryCleanerBySharedHits.clone(
        ComponentName = cms.string('detachedQuadStepTrajectoryCleanerBySharedHits'),
            fractionShared = cms.double(0.09),
            allowSharedFirstHit = cms.bool(True)
            )
detachedQuadStepTrackCandidates.TrajectoryCleaner = 'detachedQuadStepTrajectoryCleanerBySharedHits'

# TRACK FITTING
import RecoTracker.TrackProducer.TrackProducer_cfi
detachedQuadStepTracks = RecoTracker.TrackProducer.TrackProducer_cfi.TrackProducer.clone(
    AlgorithmName = cms.string('detachedQuadStep'),
    src = 'detachedQuadStepTrackCandidates',
    Fitter = cms.string('FlexibleKFFittingSmoother'),
    TTRHBuilder=cms.string('WithTrackAngle')
    )

# TRACK SELECTION AND QUALITY FLAG SETTING.
import RecoTracker.FinalTrackSelectors.multiTrackSelector_cfi
detachedQuadStepSelector = RecoTracker.FinalTrackSelectors.multiTrackSelector_cfi.multiTrackSelector.clone(
    src='detachedQuadStepTracks',
    trackSelectors= cms.VPSet(
        RecoTracker.FinalTrackSelectors.multiTrackSelector_cfi.looseMTS.clone(
            name = 'detachedQuadStepVtxLoose',
            chi2n_par = 0.9,
            res_par = ( 0.003, 0.001 ),
            minNumberLayers = 3,
            d0_par1 = ( 0.9, 3.0 ),
            dz_par1 = ( 0.9, 3.0 ),
            d0_par2 = ( 1.0, 3.0 ),
            dz_par2 = ( 1.0, 3.0 )
            ),
        RecoTracker.FinalTrackSelectors.multiTrackSelector_cfi.looseMTS.clone(
            name = 'detachedQuadStepTrkLoose',
            chi2n_par = 0.5,
            res_par = ( 0.003, 0.001 ),
            minNumberLayers = 3,
            d0_par1 = ( 1.3, 4.0 ),
            dz_par1 = ( 1.3, 4.0 ),
            d0_par2 = ( 1.3, 4.0 ),
            dz_par2 = ( 1.3, 4.0 )
            ),
        RecoTracker.FinalTrackSelectors.multiTrackSelector_cfi.tightMTS.clone(
            name = 'detachedQuadStepVtxTight',
            preFilterName = 'detachedQuadStepVtxLoose',
            chi2n_par = 0.9,
            res_par = ( 0.003, 0.001 ),
            minNumberLayers = 3,
            maxNumberLostLayers = 1,
            minNumber3DLayers = 3,
            d0_par1 = ( 0.9, 3.0 ),
            dz_par1 = ( 0.9, 3.0 ),
            d0_par2 = ( 0.9, 3.0 ),
            dz_par2 = ( 0.9, 3.0 )
            ),
        RecoTracker.FinalTrackSelectors.multiTrackSelector_cfi.tightMTS.clone(
            name = 'detachedQuadStepTrkTight',
            preFilterName = 'detachedQuadStepTrkLoose',
            chi2n_par = 0.35,
            res_par = ( 0.003, 0.001 ),
            minNumberLayers = 5,
            maxNumberLostLayers = 1,
            minNumber3DLayers = 4,
            d0_par1 = ( 1.1, 4.0 ),
            dz_par1 = ( 1.1, 4.0 ),
            d0_par2 = ( 1.1, 4.0 ),
            dz_par2 = ( 1.1, 4.0 )
            ),
        RecoTracker.FinalTrackSelectors.multiTrackSelector_cfi.highpurityMTS.clone(
            name = 'detachedQuadStepVtx',
            preFilterName = 'detachedQuadStepVtxTight',
            chi2n_par = 0.8,
            res_par = ( 0.003, 0.001 ),
            minNumberLayers = 3,
            maxNumberLostLayers = 1,
            minNumber3DLayers = 3,
            d0_par1 = ( 0.8, 3.0 ),
            dz_par1 = ( 0.8, 3.0 ),
            d0_par2 = ( 0.8, 3.0 ),
            dz_par2 = ( 0.8, 3.0 )
            ),
        RecoTracker.FinalTrackSelectors.multiTrackSelector_cfi.highpurityMTS.clone(
            name = 'detachedQuadStepTrk',
            preFilterName = 'detachedQuadStepTrkTight',
            chi2n_par = 0.2,
            res_par = ( 0.003, 0.001 ),
            minNumberLayers = 5,
            maxNumberLostLayers = 0,
            minNumber3DLayers = 4,
            d0_par1 = ( 0.8, 4.0 ),
            dz_par1 = ( 0.8, 4.0 ),
            d0_par2 = ( 0.7, 4.0 ),
            dz_par2 = ( 0.7, 4.0 )
            )
        ) #end of vpset
    ) #end of clone

import RecoTracker.FinalTrackSelectors.trackListMerger_cfi
detachedQuadStep = RecoTracker.FinalTrackSelectors.trackListMerger_cfi.trackListMerger.clone(
    TrackProducers = cms.VInputTag(cms.InputTag('detachedQuadStepTracks'),
                                   cms.InputTag('detachedQuadStepTracks')),
    hasSelector=cms.vint32(1,1),
    shareFrac = cms.double(0.095),
    indivShareFrac=cms.vdouble(0.095,0.095),
    selectedTrackQuals = cms.VInputTag(cms.InputTag("detachedQuadStepSelector","detachedQuadStepVtx"),
                                       cms.InputTag("detachedQuadStepSelector","detachedQuadStepTrk")),
    setsToMerge = cms.VPSet(cms.PSet( tLists=cms.vint32(0,1), pQual=cms.bool(True) )),
    writeOnlyTrkQuals=cms.bool(True)
)

DetachedQuadStep = cms.Sequence(detachedQuadStepClusters*
                                               detachedQuadStepSeedLayers*
                                               detachedQuadStepSeeds*
                                               detachedQuadStepTrackCandidates*
                                               detachedQuadStepTracks*
                                               detachedQuadStepSelector*
                                               detachedQuadStep)