[Halld-offline] Minutes, GlueX Offline Software Meeting, June 15, 2011

[Mark M. Ito]

Folks,

Find the minutes at 
http://www.jlab.org/Hall-D/software/wiki/index.php/GlueX_Offline_Meeting%2C_June_15%2C_2011#Minutes 
and below.

   -- Mark

   ==

GlueX Offline Meeting, June 15, 2011
Minutes

    Present:
      * IU: Mihajlo Kornicer, Ryan Mitchell, Kei Moriya, Matt Shepherd
      * JLab: Eugene Chudakov, Mark Ito (chair), David Lawrence, Elton
        Smith, Simon Taylor, Elliott Wolin, Beni Zihlmann
      * Regina: Andrei Semenov, Irina Semenova


Announcements

    We reviewed the [33]minutes from the June 1st meeting.
      * Offline Coordinator. Paul Eugenio recently [34]ran the election for
        a new Offline Coordinator. With the lack of other nominees, Mark
        was declared the winner for another two year term.
      * Dmitry. Dmitry Romanov will be visiting the Lab again, starting
        next week. He will resume work on the calibration database.


Review of minutes from the last meeting

      * b1pi analysis. David reported that Paul Mattione is now seeing
        better distributions for the "exotic meson" mass. There is no
        longer a high-side tail.
      * gridmake. Beni sent a Richard Jones a [36]link where he can start
        putting documentation for the new gridmake system.
      * Photons. Mihajlo had updated the repository with new names for some
        of the calorimeter classes. The FCAL clases have been changed to be
        consistent with the naming convention used for the BCAL, i. e.,
        "clusters" and "showers". The old BCAL and FCAL "photons" have been
        kept for backward compatibility.


Doxygen Documentation

    David went over some of the recent updates he has made to the
    [38]Doxygen-based documentation of sim-recon. We use Doxygen for
    reference documentation for each source code file, usually classes.
      * The "front page" has been rewritten bringing it up to date.
      * It includes a call diagram, with clickable boxes.
           + blue boxes go to the documentation for the factory clases
           + green trapezoids go the the data classes themselves, as
             translated from the HDDM input.
      * A set of icons for "core", "default", and "deprecated" have been
        introduced to distinguish among the roles of the factories that
        produce the same vector of data objects. These can be displayed on
        the Doxygen pages.

    Elton raised the idea of having one or more well-defined examples, in
    code, that people could use as a starting point for doing their own
    analyses. Mark will schedule a discussion of this at a future meeting.

    David proposed a minimum standard of description that should be written
    for each class in the source code. Factory classes should contain a
    summary of what they do and data classes should have work or phrase
    descriptions for every member datum. We agreed that we should adopt
    this standard as policy. As a start toward enforcement, David, Simon,
    Beni, and Elliott will all try to implement this standard in the
    classes they remember writing. A more formal enforcement mechanism will
    have to be devised in the future.

Raw hit and reconstructed track correlations: keeping track of track hits

    Beni recapped the changes he made, over that past months, to allow
    examination of the correlation between hits associated with a track
    candidate and the Monte Carlo particles that produced them. See [his
    slides] for details. The current status of this work allows
    simultaneous operation of Beni's plug-in (studying these correlations)
    and Matt's code to study the behavior of the BCAL reconstruction. In
    summary he has identified two more things to be done:
     1. Only remove itrack and ptype from MC smeared data structure only.
     2. Remove itrack and ptype from MC data altogether (unsmeared and
        smeared)


TOF reconstruction

    Simon gave a rather detailed description of the TOF reconstruction that
    is currently in sim-recon. See [41]his slides for all of those details.
    His last slide identifies current missing pieces:
      * No time-walk correction algorithm implemented
      * Cases where track crosses two adjacent paddles in a view not
        explicitly treated


New action items

     1. Schedule a discussion of analysis code examples that should be
        produced and documented. --> Mark
     2. Add comments to source code files. --> David, Simon, Beni, and
        Elliott

    Retrieved from
    
"http://www.jlab.org/Hall-D/software/wiki/index.php/GlueX_Offline_Meeting%2C_June_15%2C_2011"

References

   33. 
http://www.jlab.org/Hall-D/software/wiki/index.php/GlueX_Offline_Meeting%2C_June_1%2C_2011#Minutes
   34. 
http://dustbunny.physics.indiana.edu/mailman/private/gluex/2011-June/003034.html
   38. http://www.jlab.org/Hall-D/software/HDSoftware_Documentation
   41. https://halldweb1.jlab.org/talks/2011-2Q/tof_recon_061511.pdf