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Report to Cosmic Rack Meeting

Report to Cosmic Rack Meeting. Ivan D Reid Brunel University. Kalman Tracking and Alignment.

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Report to Cosmic Rack Meeting

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  1. Report to Cosmic Rack Meeting Ivan D Reid Brunel University

  2. Kalman Tracking and Alignment • MyEventAnalysis and GenTrackNtuple in the Monte-Carlo track reconstruction have been changed to output data on the SimTracks rather than the SimHits (there was ambiguity as to which SimHit to associate with a RecHit, since SimHits are created from secondary particles as well as the primary; several SimHits may ultimately contribute to a RecHit). • This was done through the use of TkSimHits taken from the static class CurrentTkSimEventusing a SimTrackEfficiencyFilter. See Teddy’s tutorial http://agenda.cern.ch/askArchive.php?base=agenda&categ=a03520&id=a03520s2t2/transparencies, especially pages 8 & 10. • This means that .orcarc parameters must be used to set cuts on the filtered tracks so that they will be selected, e.g.: #Disable filter settings: SimTrackEfficiencyFilter:ptcut = 0.0 SimTrackEfficiencyFilter:etamincut = 0.0 SimTrackEfficiencyFilter:etamaxcut = 100.0 SimTrackEfficiencyFilter:tipcut = 1000.0 SimTrackEfficiencyFilter:lipcut = 1000.0 SimTrackEfficiencyFilter:nhitcut = 1

  3. Problems with IGUANACMS • Next effort was to attempt to generate and reconstruct tracks through the Cosmic Rack using the initial DDD geometry supplied by Lucia. • To visualise the tracks in order to guide the selection of ParticleGun parameters, attempts were made to visualise the tracks using IGUANACMS. • This has not yet been successful, although using Mantis/OSCAR the basic geometry has been seen:

  4. Continuing... • Most recently I have changed to trying to visualise the data created with TestBeam-like geometry, but still with no success. • I must return to the detector-alignment-with-tracks project soon.

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