Planning for tracking developments

This page documents the plans for tracking developments, as discussed at tracking workshops. It was last reviewed at the Tracking workshop on 2009-07-10.

To do items

Velo pattern recognition

• Submit latest chi2 tuning of new velo fit as presented in the workshop - done by David (PatVelo tag dhcroft_20090710, in Brunel v35r4). However check chi2 values again on larger files, eventually retuning is needed (David)
• Understand bug (?) in TELL1 emulation/clustering (see Olivier's talk) (David)

TrackChecker (Stephie)

• Add criteria for reconstructible B daughters (e.g. we are only interested if all B daughter tracks are reconstructible) - done
• Add TT hit information
• Add hit efficiencies - done
• PatChecker - obsolete, remove from CVS (Stephie)

Fit improvements

• Check/Set status from FitInitialization and pass it to full kalman fitter (Stephie)
• Limit outlier removal in fit (Wouter) - Needs revisiting measurement class as separate counting for stereo and x Dof not directly feasible right now
• Check center of momentum pulls, retune dE/dx if needed (Stephie)
• unifying the options settings for all track types, make the refit possible on the best container (Kostya, Wouter)

Fast Geometry (Wouter)

• Documentation, available from tracking TWIKI - done (https://twiki.cern.ch/twiki/bin/view/LHCb/SimplifiedTrackfitGeometry)
• Add min ionisation to fast geometry - done, however not yet validated
• Code to optain fast geometry in cvs

2D PV Fit (Mariusz)

• Bias in PV reco due to non ideal Velo Position

Longer term projects / ongoing work:

• Tuning of ghost probability for HLT (no fit chi2 available) - Johannes A.

• Work on TT in tracking (Jonny, Michel)
  • common inerface for adding TT hits to long tracks

• Work on parameter comparison based method to evaluate efficiency and ghost rate (???)
  • Do we want to change only numerator or as well denominator of efficiency

• Further studies on New PatVelo Tool (Olivier)