Difference: LHCbTrackingStrategies (7 vs. 8)

Revision 82012-08-11 - PaulSeyfert

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META TOPICPARENT name="LHCbTracking"

Tracking strategies used in LHCb

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  • PatVeloOpenTracking: special algorithm for reconstructing tracks without assumptions about track parameters (e.g. to reconstruct with the Velo in open position), requires hits in consecutive sensors
  • PatVeloGeneric: general purpose reconstruction, no assumptions about track parameters, produces very clean track sample for alignment and test beam studies
  • PatVeloGeneralTracking: can run on unused tracks after PatVeloRTracking and PatVeloSpaceTracking to recover some K_s, halo and beam gas tracks
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  • FastVelo: the velo tracking used since 2011
 

Standalone T station reconstruction

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 Default Location in TES: Rec/Track/Best

Algorithms:

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  • TrackEventCloneKiller: This is the standard clone killer run in our reconstruction jobs. It removes clones by looking at the hit content of tracks; among two clones, the track with more hits is saved to the output location.
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  • TrackEventCloneKiller: This is the standard clone killer run in our reconstruction jobs used until Reco13. It removes clones by looking at the hit content of tracks; among two clones, the track with more hits is saved to the output location.
  • TrackBestTrackCreator: This is the standard clone killer run in our reconstruction jobs since Reco13a. FIXME link to wouter's slides.
 
  • TrackBuildCloneTable/TrackCloneCleaner: The combination of these algorithms flags clones by comparing track parameters and flagging the lower quality ones as clones for subsequent analysis by adding an info field to the track. This allows to e.g. apply successively harder cuts on clones during an analysis.

META FILEATTACHMENT attachment="tracktypes.svg" attr="" comment="Track types in LHCb" date="1221489275" name="tracktypes.svg" path="tracktypes.svg" size="11610" stream="tracktypes.svg" user="Main.ManuelSchiller" version="1"
 
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