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Flow Process

 

hltL3TrajSeedOIState
hltL3TrackCandidateFromL2OIState
hltL3TkTracksFromL2OIState
hltL3MuonsOIState
hltL3TrajSeedOIHit
hltL3TrackCandidateFromL2OIHit
hltL3TkTracksFromL2OIHit
hltL3MuonsOIHit
hltL3TkFromL2OICombination
hltL3TrajSeedIOHit
hltL3TrackCandidateFromL2IOHit
hltL3TkTracksFromL2IOHit
hltL3MuonsIOHit
hltL3TrajectorySeed
hltL3TrackCandidateFromL2

 

After the local pixel and strip sequences the three different seeding algorithms are visited in the sequence: OIState, OIHit and IOHit.

The steps for each algorithm is described below starting with the creation of L3 muon trajectory seeds from the hltL3TrajSeed.

 


hltL3TrajSeed

 

TSGFromL2Muon::produce()
MuonTrackingRegionBuilder::setEvent()
TrackerSeedCleaner::setEvent()
MuonTrackingRegionBuilder::region()
TrackerSeedGenerator::trackerSeeds()
TrackerSeedCleaner::clean()

 

hltL3TrackCandidateFromL2

 

CkfTrackCandidateMakerBase::produceBase()
cms::CkfTrackCandidateMakerBase::setEventSetup()
NavigationSetter::NavigationSetter()
BaseCkfTrajectoryBuilder::clone() // A: create Trajectory builder
RedundantSeedCleaner::init() // D: invoke building algo
BaseCkfTrajectoryBuilder::buildTrajectories() // Build trajectory from seed outwards
TrajectoryCleaner::clean() // select best trajectory
BaseCkfTrajectoryBuilder::rebuildTrajectories() // possibly continue building trajs back thru seed
TrajectoryCleaner::clean() // select best trajectory
RedundantSeedCleaner::done()
TrajectoryCleaner::clean() // E: clean results to avoid dup tracks
// If requested, reverse the trajectories creating a new 1-hit seed on the last measurement of the track
Trajectory::recHitsV() // F: Convert to TrackCandidates
TransientInitialStateEstimator::innerState()
thePropagator->propagate()
trajectoryStateTransform::persistentState()

 

hltL3TkTracksFromL2

 

TrackProducer::produce()
TrackProducerBase< reco::Track >::getFromES()
TrackProducerBase< reco::Track >::getFromEvt()
TrackProducerAlgorithm::runWithCandidate()

 

hltL3Muons

 

L3MuonProducer::produce()
MuonServiceProxy::update()
MuonTrajectoryBuilder::TrackCand()
MuonTrackFinder::reconstruct()

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