TobTecStep_cff.py

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import FWCore.ParameterSet.Config as cms
import RecoTracker.IterativeTracking.iterativeTkConfig as _cfg
from Configuration.Eras.Modifier_fastSim_cff import fastSim

#######################################################################
# Very large impact parameter tracking using TOB + TEC ring 5 seeding #
#######################################################################

tobTecStepClusters = _cfg.clusterRemoverForIter("TobTecStep")
for _eraName, _postfix, _era in _cfg.nonDefaultEras():
    _era.toReplaceWith(tobTecStepClusters, _cfg.clusterRemoverForIter("TobTecStep", _eraName, _postfix))

# TRIPLET SEEDING LAYERS
from RecoLocalTracker.SiStripClusterizer.SiStripClusterChargeCut_cfi import *
tobTecStepSeedLayersTripl = cms.EDProducer("SeedingLayersEDProducer",
    layerList = cms.vstring(
    #TOB
    'TOB1+TOB2+MTOB3','TOB1+TOB2+MTOB4',
    #TOB+MTEC
    'TOB1+TOB2+MTEC1_pos','TOB1+TOB2+MTEC1_neg',
    ),
    TOB = cms.PSet(
         TTRHBuilder    = cms.string('WithTrackAngle'), clusterChargeCut = cms.PSet(refToPSet_ = cms.string('SiStripClusterChargeCutTight')),
         matchedRecHits = cms.InputTag("siStripMatchedRecHits","matchedRecHit"),
         skipClusters   = cms.InputTag('tobTecStepClusters')
    ),
    MTOB = cms.PSet(
         TTRHBuilder    = cms.string('WithTrackAngle'), clusterChargeCut = cms.PSet(refToPSet_ = cms.string('SiStripClusterChargeCutTight')),
         skipClusters   = cms.InputTag('tobTecStepClusters'),
         rphiRecHits    = cms.InputTag("siStripMatchedRecHits","rphiRecHit")
    ),
    MTEC = cms.PSet(
        rphiRecHits    = cms.InputTag("siStripMatchedRecHits","rphiRecHit"),
        skipClusters = cms.InputTag('tobTecStepClusters'),
        useRingSlector = cms.bool(True),
        TTRHBuilder = cms.string('WithTrackAngle'), clusterChargeCut = cms.PSet(refToPSet_ = cms.string('SiStripClusterChargeCutTight')),
        minRing = cms.int32(6),
        maxRing = cms.int32(7)
    )
)

# Triplet TrackingRegion
from RecoTracker.TkTrackingRegions.globalTrackingRegionFromBeamSpotFixedZ_cfi import globalTrackingRegionFromBeamSpotFixedZ as _globalTrackingRegionFromBeamSpotFixedZ
tobTecStepTrackingRegionsTripl = _globalTrackingRegionFromBeamSpotFixedZ.clone(RegionPSet = dict(
    ptMin = 0.55,
    originHalfLength = 20.0,
    originRadius = 3.5
))

from Configuration.Eras.Modifier_pp_on_XeXe_2017_cff import pp_on_XeXe_2017
from Configuration.Eras.Modifier_pp_on_AA_2018_cff import pp_on_AA_2018
from RecoTracker.IterativeTracking.MixedTripletStep_cff import _mixedTripletStepTrackingRegionsCommon_pp_on_HI
(pp_on_XeXe_2017 | pp_on_AA_2018).toReplaceWith(tobTecStepTrackingRegionsTripl, 
                _mixedTripletStepTrackingRegionsCommon_pp_on_HI.clone(RegionPSet=dict(
                    ptMinScaling4BigEvts= False,
                    fixedError = 5.0,
                    ptMin = 2.0,
                    originRadius = 3.5
                )                                                                      )
)

# Triplet seeding
from RecoPixelVertexing.PixelLowPtUtilities.ClusterShapeHitFilterESProducer_cfi import ClusterShapeHitFilterESProducer as _ClusterShapeHitFilterESProducer
tobTecStepClusterShapeHitFilter = _ClusterShapeHitFilterESProducer.clone(
    ComponentName = 'tobTecStepClusterShapeHitFilter',
    doStripShapeCut = cms.bool(False),
    clusterChargeCut = dict(refToPSet_ = 'SiStripClusterChargeCutTight')
)

from RecoTracker.TkHitPairs.hitPairEDProducer_cfi import hitPairEDProducer as _hitPairEDProducer
tobTecStepHitDoubletsTripl = _hitPairEDProducer.clone(
    seedingLayers = "tobTecStepSeedLayersTripl",
    trackingRegions = "tobTecStepTrackingRegionsTripl",
    maxElement = 50000000,
    produceIntermediateHitDoublets = True,
)
from RecoTracker.TkSeedGenerator.multiHitFromChi2EDProducer_cfi import multiHitFromChi2EDProducer as _multiHitFromChi2EDProducer
tobTecStepHitTripletsTripl = _multiHitFromChi2EDProducer.clone(
    doublets = "tobTecStepHitDoubletsTripl",
    extraPhiKDBox = 0.01,
)
from RecoTracker.TkSeedGenerator.seedCreatorFromRegionConsecutiveHitsEDProducer_cff import seedCreatorFromRegionConsecutiveHitsEDProducer as _seedCreatorFromRegionConsecutiveHitsTripletOnlyEDProducer
from RecoPixelVertexing.PixelLowPtUtilities.StripSubClusterShapeSeedFilter_cfi import StripSubClusterShapeSeedFilter as _StripSubClusterShapeSeedFilter
_tobTecStepSeedComparitorPSet = dict(
    ComponentName = 'CombinedSeedComparitor',
    mode = cms.string("and"),
    comparitors = cms.VPSet(
        cms.PSet(# FIXME: is this defined in any cfi that could be imported instead of copy-paste?
            ComponentName = cms.string('PixelClusterShapeSeedComparitor'),
            FilterAtHelixStage = cms.bool(True),
            FilterPixelHits = cms.bool(False),
            FilterStripHits = cms.bool(True),
            ClusterShapeHitFilterName = cms.string('tobTecStepClusterShapeHitFilter'),
            ClusterShapeCacheSrc = cms.InputTag("siPixelClusterShapeCache") # not really needed here since FilterPixelHits=False
        ),
        _StripSubClusterShapeSeedFilter.clone()
    )
)
tobTecStepSeedsTripl = _seedCreatorFromRegionConsecutiveHitsTripletOnlyEDProducer.clone(#empirically better than 'SeedFromConsecutiveHitsTripletOnlyCreator'
    seedingHitSets = "tobTecStepHitTripletsTripl",
    SeedComparitorPSet = _tobTecStepSeedComparitorPSet,
)
#fastsim
import FastSimulation.Tracking.TrajectorySeedProducer_cfi
_fastSim_tobTecStepSeedsTripl = FastSimulation.Tracking.TrajectorySeedProducer_cfi.trajectorySeedProducer.clone(
    trackingRegions = "tobTecStepTrackingRegionsTripl",
    hitMasks = cms.InputTag("tobTecStepMasks"),
)
from FastSimulation.Tracking.SeedingMigration import _hitSetProducerToFactoryPSet
_fastSim_tobTecStepSeedsTripl.seedFinderSelector.MultiHitGeneratorFactory = _hitSetProducerToFactoryPSet(tobTecStepHitTripletsTripl)
_fastSim_tobTecStepSeedsTripl.seedFinderSelector.MultiHitGeneratorFactory.SeedComparitorPSet=cms.PSet(  ComponentName = cms.string( "none" ) )
_fastSim_tobTecStepSeedsTripl.seedFinderSelector.MultiHitGeneratorFactory.refitHits = False
_fastSim_tobTecStepSeedsTripl.seedFinderSelector.layerList = tobTecStepSeedLayersTripl.layerList.value()
fastSim.toReplaceWith(tobTecStepSeedsTripl,_fastSim_tobTecStepSeedsTripl)

# PAIR SEEDING LAYERS
tobTecStepSeedLayersPair = cms.EDProducer("SeedingLayersEDProducer",
    layerList = cms.vstring('TOB1+TEC1_pos','TOB1+TEC1_neg', 
                            'TEC1_pos+TEC2_pos','TEC1_neg+TEC2_neg', 
                            'TEC2_pos+TEC3_pos','TEC2_neg+TEC3_neg', 
                            'TEC3_pos+TEC4_pos','TEC3_neg+TEC4_neg', 
                            'TEC4_pos+TEC5_pos','TEC4_neg+TEC5_neg', 
                            'TEC5_pos+TEC6_pos','TEC5_neg+TEC6_neg', 
                            'TEC6_pos+TEC7_pos','TEC6_neg+TEC7_neg'),
    TOB = cms.PSet(
         TTRHBuilder    = cms.string('WithTrackAngle'), clusterChargeCut = cms.PSet(refToPSet_ = cms.string('SiStripClusterChargeCutTight')),
         matchedRecHits = cms.InputTag("siStripMatchedRecHits","matchedRecHit"),
         skipClusters   = cms.InputTag('tobTecStepClusters')
    ),
    TEC = cms.PSet(
        matchedRecHits = cms.InputTag("siStripMatchedRecHits","matchedRecHit"),
        skipClusters = cms.InputTag('tobTecStepClusters'),
        useRingSlector = cms.bool(True),
        TTRHBuilder = cms.string('WithTrackAngle'), clusterChargeCut = cms.PSet(refToPSet_ = cms.string('SiStripClusterChargeCutTight')),
        minRing = cms.int32(5),
        maxRing = cms.int32(5)
    )
)
# Pair TrackingRegion
tobTecStepTrackingRegionsPair = _globalTrackingRegionFromBeamSpotFixedZ.clone(RegionPSet = dict(
    ptMin = 0.6,
    originHalfLength = 30.0,
    originRadius = 6.0,
))

(pp_on_XeXe_2017 | pp_on_AA_2018).toReplaceWith(tobTecStepTrackingRegionsPair, 
                _mixedTripletStepTrackingRegionsCommon_pp_on_HI.clone(RegionPSet=dict(
                    ptMinScaling4BigEvts= False,
                    fixedError = 7.5,
                    ptMin = 2.0,
                    originRadius = 6.0
                )                                                                      )
)


# Pair seeds
tobTecStepHitDoubletsPair = _hitPairEDProducer.clone(
    seedingLayers = "tobTecStepSeedLayersPair",
    trackingRegions = "tobTecStepTrackingRegionsPair",
    produceSeedingHitSets = True,
    maxElementTotal = 12000000,
)
from RecoTracker.TkSeedGenerator.seedCreatorFromRegionConsecutiveHitsEDProducer_cff import seedCreatorFromRegionConsecutiveHitsEDProducer as _seedCreatorFromRegionConsecutiveHitsEDProducer
tobTecStepSeedsPair = _seedCreatorFromRegionConsecutiveHitsEDProducer.clone(
    seedingHitSets = "tobTecStepHitDoubletsPair",
    SeedComparitorPSet = _tobTecStepSeedComparitorPSet,
)
#fastsim
import FastSimulation.Tracking.TrajectorySeedProducer_cfi
fastSim.toReplaceWith(tobTecStepSeedsPair,
                      FastSimulation.Tracking.TrajectorySeedProducer_cfi.trajectorySeedProducer.clone(
        trackingRegions = "tobTecStepTrackingRegionsPair",
        hitMasks = cms.InputTag("tobTecStepMasks"),
        seedFinderSelector = dict(layerList = tobTecStepSeedLayersPair.layerList.value())
        )
)


# Combined seeds
import RecoTracker.TkSeedGenerator.GlobalCombinedSeeds_cfi
tobTecStepSeeds = RecoTracker.TkSeedGenerator.GlobalCombinedSeeds_cfi.globalCombinedSeeds.clone()
tobTecStepSeeds.seedCollections = cms.VInputTag(cms.InputTag('tobTecStepSeedsTripl'),cms.InputTag('tobTecStepSeedsPair'))

# LowPU
from Configuration.Eras.Modifier_trackingLowPU_cff import trackingLowPU
trackingLowPU.toModify(tobTecStepHitDoubletsPair, seedingLayers = 'tobTecStepSeedLayers')
trackingLowPU.toReplaceWith(tobTecStepSeeds, _seedCreatorFromRegionConsecutiveHitsEDProducer.clone(
    seedingHitSets = "tobTecStepHitDoubletsPair",
))


# QUALITY CUTS DURING TRACK BUILDING (for inwardss and outwards track building steps)
import TrackingTools.TrajectoryFiltering.TrajectoryFilter_cff
_tobTecStepTrajectoryFilterBase = TrackingTools.TrajectoryFiltering.TrajectoryFilter_cff.CkfBaseTrajectoryFilter_block.clone(
    maxLostHits = 0,
    minimumNumberOfHits = 5,
    minPt = 0.1,
    minHitsMinPt = 3
    )
tobTecStepTrajectoryFilter = _tobTecStepTrajectoryFilterBase.clone(
    seedPairPenalty = 1,
)
trackingLowPU.toReplaceWith(tobTecStepTrajectoryFilter, _tobTecStepTrajectoryFilterBase.clone(
    minimumNumberOfHits = 6,
))
for e in [pp_on_XeXe_2017, pp_on_AA_2018]:
    e.toModify(tobTecStepTrajectoryFilter, minPt=2.0)

tobTecStepInOutTrajectoryFilter = tobTecStepTrajectoryFilter.clone(
    minimumNumberOfHits = 4,
)


import RecoTracker.MeasurementDet.Chi2ChargeMeasurementEstimator_cfi
tobTecStepChi2Est = RecoTracker.MeasurementDet.Chi2ChargeMeasurementEstimator_cfi.Chi2ChargeMeasurementEstimator.clone(
    ComponentName = cms.string('tobTecStepChi2Est'),
    nSigma = cms.double(3.0),
    MaxChi2 = cms.double(16.0),
    clusterChargeCut = cms.PSet(refToPSet_ = cms.string('SiStripClusterChargeCutTight'))
)
trackingLowPU.toModify(tobTecStepChi2Est,
    clusterChargeCut = dict(refToPSet_ = 'SiStripClusterChargeCutTiny')
)

# TRACK BUILDING
import RecoTracker.CkfPattern.GroupedCkfTrajectoryBuilder_cfi
tobTecStepTrajectoryBuilder = RecoTracker.CkfPattern.GroupedCkfTrajectoryBuilder_cfi.GroupedCkfTrajectoryBuilder.clone(
    MeasurementTrackerName = '',
    trajectoryFilter = cms.PSet(refToPSet_ = cms.string('tobTecStepTrajectoryFilter')),
    inOutTrajectoryFilter = cms.PSet(refToPSet_ = cms.string('tobTecStepInOutTrajectoryFilter')),
    useSameTrajFilter = False,
    minNrOfHitsForRebuild = 4,
    alwaysUseInvalidHits = False,
    maxCand = 2,
    estimator = cms.string('tobTecStepChi2Est'),
    #startSeedHitsInRebuild = True
    maxDPhiForLooperReconstruction = cms.double(2.0),
    maxPtForLooperReconstruction = cms.double(0.7)
    )
# Important note for LowPU: in RunI_TobTecStep the
# inOutTrajectoryFilter parameter is spelled as
# inOutTrajectoryFilterName, and I suspect it has no effect there. I
# chose to "fix" the behaviour here, so the era is not fully
# equivalent to the customize. To restore the customize behaviour,
# uncomment the following lines
#trackingLowPU.toModify(tobTecStepTrajectoryBuilder,
#    inOutTrajectoryFilter = RecoTracker.CkfPattern.GroupedCkfTrajectoryBuilder_cfi.GroupedCkfTrajectoryBuilder.inOutTrajectoryFilter.clone(),
#    inOutTrajectoryFilterName = cms.PSet(refToPSet_ = cms.string('tobTecStepInOutTrajectoryFilter'))
#)

# MAKING OF TRACK CANDIDATES
import RecoTracker.CkfPattern.CkfTrackCandidates_cfi
tobTecStepTrackCandidates = RecoTracker.CkfPattern.CkfTrackCandidates_cfi.ckfTrackCandidates.clone(
    src = cms.InputTag('tobTecStepSeeds'),
    clustersToSkip = cms.InputTag('tobTecStepClusters'),
    ### these two parameters are relevant only for the CachingSeedCleanerBySharedInput
    numHitsForSeedCleaner = cms.int32(50),
    onlyPixelHitsForSeedCleaner = cms.bool(True),

    TrajectoryBuilderPSet = cms.PSet(refToPSet_ = cms.string('tobTecStepTrajectoryBuilder')),
    doSeedingRegionRebuilding = True,
    useHitsSplitting = True,
    cleanTrajectoryAfterInOut = True,
    TrajectoryCleaner = 'tobTecStepTrajectoryCleanerBySharedHits'
)
import FastSimulation.Tracking.TrackCandidateProducer_cfi
fastSim.toReplaceWith(tobTecStepTrackCandidates,
                      FastSimulation.Tracking.TrackCandidateProducer_cfi.trackCandidateProducer.clone(
        MinNumberOfCrossedLayers = 3,
        src = cms.InputTag("tobTecStepSeeds"),
        hitMasks = cms.InputTag("tobTecStepMasks")
        )
                      )


from TrackingTools.TrajectoryCleaning.TrajectoryCleanerBySharedHits_cfi import trajectoryCleanerBySharedHits
tobTecStepTrajectoryCleanerBySharedHits = trajectoryCleanerBySharedHits.clone(
    ComponentName = cms.string('tobTecStepTrajectoryCleanerBySharedHits'),
    fractionShared = cms.double(0.09),
    allowSharedFirstHit = cms.bool(True)
    )
trackingLowPU.toModify(tobTecStepTrajectoryCleanerBySharedHits, fractionShared = 0.19)

# TRACK FITTING AND SMOOTHING OPTIONS
import TrackingTools.TrackFitters.RungeKuttaFitters_cff
tobTecStepFitterSmoother = TrackingTools.TrackFitters.RungeKuttaFitters_cff.KFFittingSmootherWithOutliersRejectionAndRK.clone(
    ComponentName = 'tobTecStepFitterSmoother',
    EstimateCut = 30,
    MinNumberOfHits = 7,
    Fitter = cms.string('tobTecStepRKFitter'),
    Smoother = cms.string('tobTecStepRKSmoother')
    )
trackingLowPU.toModify(tobTecStepFitterSmoother, MinNumberOfHits = 8)

tobTecStepFitterSmootherForLoopers = tobTecStepFitterSmoother.clone(
    ComponentName = 'tobTecStepFitterSmootherForLoopers',
    Fitter = cms.string('tobTecStepRKFitterForLoopers'),
    Smoother = cms.string('tobTecStepRKSmootherForLoopers')
)

# Also necessary to specify minimum number of hits after final track fit
tobTecStepRKTrajectoryFitter = TrackingTools.TrackFitters.RungeKuttaFitters_cff.RKTrajectoryFitter.clone(
    ComponentName = cms.string('tobTecStepRKFitter'),
    minHits = 7
)
trackingLowPU.toModify(tobTecStepRKTrajectoryFitter, minHits = 8)

tobTecStepRKTrajectoryFitterForLoopers = tobTecStepRKTrajectoryFitter.clone(
    ComponentName = cms.string('tobTecStepRKFitterForLoopers'),
    Propagator = cms.string('PropagatorWithMaterialForLoopers'),
)

tobTecStepRKTrajectorySmoother = TrackingTools.TrackFitters.RungeKuttaFitters_cff.RKTrajectorySmoother.clone(
    ComponentName = cms.string('tobTecStepRKSmoother'),
    errorRescaling = 10.0,
    minHits = 7
)
trackingLowPU.toModify(tobTecStepRKTrajectorySmoother, minHits = 8)

tobTecStepRKTrajectorySmootherForLoopers = tobTecStepRKTrajectorySmoother.clone(
    ComponentName = cms.string('tobTecStepRKSmootherForLoopers'),
    Propagator = cms.string('PropagatorWithMaterialForLoopers'),
)

import TrackingTools.TrackFitters.FlexibleKFFittingSmoother_cfi
tobTecFlexibleKFFittingSmoother = TrackingTools.TrackFitters.FlexibleKFFittingSmoother_cfi.FlexibleKFFittingSmoother.clone(
    ComponentName = cms.string('tobTecFlexibleKFFittingSmoother'),
    standardFitter = cms.string('tobTecStepFitterSmoother'),
    looperFitter = cms.string('tobTecStepFitterSmootherForLoopers'),
)


# TRACK FITTING
import RecoTracker.TrackProducer.TrackProducer_cfi
tobTecStepTracks = RecoTracker.TrackProducer.TrackProducer_cfi.TrackProducer.clone(
    src = 'tobTecStepTrackCandidates',
    AlgorithmName = cms.string('tobTecStep'),
    #Fitter = 'tobTecStepFitterSmoother',
    Fitter = 'tobTecFlexibleKFFittingSmoother',
    )
fastSim.toModify(tobTecStepTracks, TTRHBuilder = 'WithoutRefit')


# TRACK SELECTION AND QUALITY FLAG SETTING.
from RecoTracker.FinalTrackSelectors.TrackMVAClassifierPrompt_cfi import *
from RecoTracker.FinalTrackSelectors.TrackMVAClassifierDetached_cfi import *
tobTecStepClassifier1 = TrackMVAClassifierDetached.clone()
tobTecStepClassifier1.src = 'tobTecStepTracks'
tobTecStepClassifier1.mva.GBRForestLabel = 'MVASelectorIter6_13TeV'
tobTecStepClassifier1.qualityCuts = [-0.6,-0.45,-0.3]
fastSim.toModify(tobTecStepClassifier1, vertices = "firstStepPrimaryVerticesBeforeMixing")

tobTecStepClassifier2 = TrackMVAClassifierPrompt.clone()
tobTecStepClassifier2.src = 'tobTecStepTracks'
tobTecStepClassifier2.mva.GBRForestLabel = 'MVASelectorIter0_13TeV'
tobTecStepClassifier2.qualityCuts = [0.0,0.0,0.0]
fastSim.toModify(tobTecStepClassifier2,vertices = "firstStepPrimaryVerticesBeforeMixing")

from RecoTracker.FinalTrackSelectors.ClassifierMerger_cfi import *
tobTecStep = ClassifierMerger.clone()
tobTecStep.inputClassifiers=['tobTecStepClassifier1','tobTecStepClassifier2']

from Configuration.Eras.Modifier_trackingPhase1_cff import trackingPhase1
trackingPhase1.toReplaceWith(tobTecStep, tobTecStepClassifier1.clone(
     mva = dict(GBRForestLabel = 'MVASelectorTobTecStep_Phase1'),
     qualityCuts = [-0.6,-0.45,-0.3],
))
pp_on_AA_2018.toModify(tobTecStep, qualityCuts = [-0.6,-0.3,0.7])

import RecoTracker.FinalTrackSelectors.multiTrackSelector_cfi
trackingLowPU.toReplaceWith(tobTecStep, RecoTracker.FinalTrackSelectors.multiTrackSelector_cfi.multiTrackSelector.clone(
    src = 'tobTecStepTracks',
    useAnyMVA = cms.bool(False),
    GBRForestLabel = cms.string('MVASelectorIter6'),
    trackSelectors = [
        RecoTracker.FinalTrackSelectors.multiTrackSelector_cfi.looseMTS.clone(
            name = 'tobTecStepLoose',
            chi2n_par = 0.4,
            res_par = ( 0.003, 0.001 ),
            minNumberLayers = 5,
            maxNumberLostLayers = 1,
            minNumber3DLayers = 2,
            d0_par1 = ( 2.0, 4.0 ),
            dz_par1 = ( 1.8, 4.0 ),
            d0_par2 = ( 2.0, 4.0 ),
            dz_par2 = ( 1.8, 4.0 )
        ),
        RecoTracker.FinalTrackSelectors.multiTrackSelector_cfi.tightMTS.clone(
            name = 'tobTecStepTight',
            preFilterName = 'tobTecStepLoose',
            chi2n_par = 0.3,
            res_par = ( 0.003, 0.001 ),
            minNumberLayers = 5,
            maxNumberLostLayers = 0,
            minNumber3DLayers = 2,
            d0_par1 = ( 1.5, 4.0 ),
            dz_par1 = ( 1.4, 4.0 ),
            d0_par2 = ( 1.5, 4.0 ),
            dz_par2 = ( 1.4, 4.0 )
        ),
        RecoTracker.FinalTrackSelectors.multiTrackSelector_cfi.highpurityMTS.clone(
            name = 'QualityMasks',
            preFilterName = 'tobTecStepTight',
            chi2n_par = 0.2,
            res_par = ( 0.003, 0.001 ),
            minNumberLayers = 5,
            maxNumberLostLayers = 0,
            minNumber3DLayers = 2,
            d0_par1 = ( 1.4, 4.0 ),
            dz_par1 = ( 1.3, 4.0 ),
            d0_par2 = ( 1.4, 4.0 ),
            dz_par2 = ( 1.3, 4.0 )
        ),
    ] #end of vpset
)) #end of clone



TobTecStepTask = cms.Task(tobTecStepClusters,
                          tobTecStepSeedLayersTripl,
                          tobTecStepTrackingRegionsTripl,
                          tobTecStepHitDoubletsTripl,
                          tobTecStepHitTripletsTripl,
                          tobTecStepSeedsTripl,
                          tobTecStepSeedLayersPair,
                          tobTecStepTrackingRegionsPair,
                          tobTecStepHitDoubletsPair,
                          tobTecStepSeedsPair,
                          tobTecStepSeeds,
                          tobTecStepTrackCandidates,
                          tobTecStepTracks,
                          tobTecStepClassifier1,tobTecStepClassifier2,
                          tobTecStep)
TobTecStep = cms.Sequence(TobTecStepTask)


### Following are specific for LowPU, they're collected here to
### not to interfere too much with the default configuration
# SEEDING LAYERS
tobTecStepSeedLayers = cms.EDProducer("SeedingLayersEDProducer",
    layerList = cms.vstring('TOB1+TOB2', 
        'TOB1+TEC1_pos', 'TOB1+TEC1_neg', 
        'TEC1_pos+TEC2_pos', 'TEC2_pos+TEC3_pos', 
        'TEC3_pos+TEC4_pos', 'TEC4_pos+TEC5_pos', 
        'TEC5_pos+TEC6_pos', 'TEC6_pos+TEC7_pos', 
        'TEC1_neg+TEC2_neg', 'TEC2_neg+TEC3_neg', 
        'TEC3_neg+TEC4_neg', 'TEC4_neg+TEC5_neg', 
        'TEC5_neg+TEC6_neg', 'TEC6_neg+TEC7_neg'),
    TOB = cms.PSet(
        matchedRecHits = cms.InputTag("siStripMatchedRecHits","matchedRecHit"),
        skipClusters = cms.InputTag('tobTecStepClusters'),
        TTRHBuilder = cms.string('WithTrackAngle'), clusterChargeCut = cms.PSet(refToPSet_ = cms.string('SiStripClusterChargeCutTiny'))
    ),
    TEC = cms.PSet(
        matchedRecHits = cms.InputTag("siStripMatchedRecHits","matchedRecHit"),
        skipClusters = cms.InputTag('tobTecStepClusters'),
        #    untracked bool useSimpleRphiHitsCleaner = false
        useRingSlector = cms.bool(True),
        TTRHBuilder = cms.string('WithTrackAngle'), clusterChargeCut = cms.PSet(refToPSet_ = cms.string('SiStripClusterChargeCutTiny')),
        minRing = cms.int32(5),
        maxRing = cms.int32(5)
    )
)

trackingLowPU.toReplaceWith(TobTecStepTask, 
    cms.Task(
    tobTecStepClusters,
    tobTecStepSeedLayers,
    tobTecStepTrackingRegionsPair,
    tobTecStepHitDoubletsPair,
    tobTecStepSeeds,
    tobTecStepTrackCandidates,
    tobTecStepTracks,
    tobTecStep
    )
)

#fastsim
import FastSimulation.Tracking.FastTrackerRecHitMaskProducer_cfi
tobTecStepMasks = FastSimulation.Tracking.FastTrackerRecHitMaskProducer_cfi.maskProducerFromClusterRemover(tobTecStepClusters)
fastSim.toReplaceWith(TobTecStepTask,
                      cms.Task(tobTecStepMasks
                                   ,tobTecStepTrackingRegionsTripl
                                   ,tobTecStepSeedsTripl
                                   ,tobTecStepTrackingRegionsPair
                                   ,tobTecStepSeedsPair
                                   ,tobTecStepSeeds
                                   ,tobTecStepTrackCandidates
                                   ,tobTecStepTracks
                                   ,tobTecStepClassifier1,tobTecStepClassifier2
                                   ,tobTecStep
                                   )
)