GlueX Offline Meeting, May 18, 2011

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GlueX Offline Software Meeting
Wednesday, May 18, 2011
1:30 pm EDT
JLab: CEBAF Center A110


  1. Announcements
  2. Review of minutes from the last meeting: all
  3. Action Item Review: all
  4. Review of recent repository activity: all

Communication Information


To connect by telephone:

  1. dial:
  2. enter access code followed by the # sign: 3421244#

Video Conferencing


Talks can be deposited in the directory /group/halld/www/halldweb1/html/talks/2011-2Q on the JLab CUE. This directory is accessible from the web at . You have to be a member of the "halld" Unix group to do this.


Present: Mark Ito (chair), David Lawrence, Paul Mattione, Kei Moriya, Nathan Sparks, Simon Taylor, Beni Zihlmann

• some tracks exhibit trajectory that curl tighter • need work on track candidates • new hit selector that may help • may not be the thing we can do well first

• another satisfied customer: Paul • seems pretty straighforward • david pointed paul to howto on b1pi ∘ found efficiency much lower than in howto ∘ dave confirmed it ∘ used to get 50% ∘ down to 5% • bad hits can throw the kalman filter off, alt1 more robust against inclusion of anomalous hits ∘ annealing algorithm ∘ rejection of weird hits • talk from beni on primaries ∘ change made, helps Matt resolve his problem • it review ∘ what will be import of recommendations made by the committee • picture, figure repository; where are we with that?