GlueX Offline Meeting, September 21, 2011

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GlueX Offline Software Meeting
Wednesday, September 21, 2011
1:30 pm EDT
JLab: CEBAF Center F326

Agenda

  1. Announcements
  2. Review of minutes from the last meeting: all
  3. Reconstruction sub-group reports
    1. Calorimeters: Matt
    2. Tracking: Simon
    3. PID: Paul M.: GlueX Particle ID, Uncertainties Update
  4. Compressed Data Format Update: Richard or Igor
  5. BCAL Reconstruction Update: Will
  6. Plug-in to extract single particles from multi-particle events (email) : David
  7. Tracking explained: Simon
  8. Resources: an idea for managing large files: Dmitry
  9. Collaboration Meeting Agenda
  10. Action Item Review
  11. Review of recent repository activity: all

Communication Information

Telephone

To connect by telephone:

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

Video Conferencing

Slides

Talks can be deposited in the directory /group/halld/www/halldweb1/html/talks/2011-3Q on the JLab CUE. This directory is accessible from the web at https://halldweb1.jlab.org/talks/2011-3Q/ . You have to be a member of the "halld" Unix group to do this.

Minutes

Present:

  • CMU: Will Levine, Paul Mattione, Curtis Meyer
  • IU: Ryan Mitchell, Kei Moriya, Matt Shepherd
  • JLab: Hovanes Egiyan, Mark Ito (chair), David Lawrence, Yi Qiang, Dmitry Romanov, Elton Smith, Sascha Somov, Simon Taylor, Elliott Wolin
  • Regina: Andrei Semenov
  • FSU: Nathan Sparks

Announcements

  • Mark announced that, by default, we will not be using the phone anymore at these meetings. I someone does happen to have a need for a phone connection, just let Mark know in advance.
  • Elliott announced that he and David will be attending the CLAS12 Service Oriented Architecture Workshop. Contact Elliott for more information.

sub groups

matt calorimetry

list of things, 1234 segmentation,334 to switch geometry not as flexible as originally thought will working on it

timing offsets time is set by timeof highest energy block xyz is not taken into account will take some work and attention: matt will try this himself

simon, tracking

quality of track candidates found issues with angle guess for very forward going tracks fixed up angle in track candidate some minor changes

farming out fiducial cuts a possible issue design goal one degree

paul pid

new scheme, slightly different

hermes log of prob ratios beni

instead of adding chisq , try to weight chisq from different sources, the way to do that is not clear, problem is that errors are correlated


variable thresholds in code now. not how it will be done david

Andrei: segmentation scheme, not agree, reconstrcution code effects energy resolution. if noise added or hits missed calibration will bias means

bother updating kloe: kloe default is still used in the fine segmentation scheme keep to kloe alive, keep for now

david

single particle plugin if two particles, two events are made

simon

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