[Halld-offline] Minutes, GlueX Offline Software Meeting, Jan. 26, '11

[Mark M. Ito]

Find the minutes at 
http://www.jlab.org/Hall-D/software/wiki/index.php/GlueX_Offline_Meeting%2C_January_26%2C_2011#Minutes 
and below as text.

   ==

GlueX Offline Meeting, January 26, 2011
Minutes

    Present:
      * IU: Jake Bennett, Mihajlo Kornicer, Ryan Mitchell, Kei Moriya
      * JLab: Mark Ito (chair), David Lawrence, Yi Qiang, Dmitry Romanov,
        Elton Smith, Simon Taylor, Elliott Wolin, Beni Zihlmann


Announcements

    The agenda for the offline session at the collaboration meeting is set.
    See [34]the collaboration meeting page for the line-up.

Review of Minutes from Last Meeting

    We reviewed [36]the minutes of the January 12 meeting.
      * Beni told us that the changes we discussed last to separate TOF MC
        data and measured data are done and have been checked in. He will
        give a follow-up talk at a future meeting.
      * Beni has started modifying mcsmear and the reconstruction to
        collect parameters for the TOF into one place and obtain them from
        the database rather that have them hard-wired in various places in
        the code.
      * Dave reported that Graham Heyes has looked in the Purify license we
        had at the lab. It seems to have long since expired.


Solenoid text file conversion approach

    Mark raised the question of whether we want to treat magnetic field
    maps as standard entries in the calibration database. The issue is that
    the various versions of the maps are not strictly calibration
    constants; the user can generally use any map he or she wants. After a
    little discussion, we decided to leave well enough alone and retain the
    maps in the database.

Examination of the reconstruction algorithm as inherited from KLOE

    Mark mentioned that he had seen this phrase in the minutes of one of
    the calorimeter meetings (attributed to Zisis) and he wondered if this
    was an issue the offline group should be tracking or discussing or
    hearing about. Ryan commented that Dan Bennett and Matt Shepherd had
    made improvements to the code, but there are still some mysteries in
    the code that someone in the collaboration should figure out. Elton
    mentioned that Regina was starting to look at maintaining the BCAL
    code. David will check with Regina folks on the status of the effort.

Tracking Issues

    Kei gave us an update on the problems he presented at the last meeting.
    He recently updated his copy of sim-recon and repeated many of his
    studies with the new code base. One major change between the two
    versions compared is the substitution of the Kalman filter fitter for
    the ALT1 fitter. Some of his problems disappeared, some remain. See
    [40]his slides for details.

    Elton asked about the peak at zero in the chi-squared probability for
    individual charged tracks that has been observed in the past. Simon
    remarked that some of that may have been due to decays-in-flight or
    large single scatters. He continues to study the problem.

Action Item Review

    We looked at recently-resolved and still-outstanding issues in the
    [42]Offline Bug Tracker

New Action Items

     1. Ask people at Regina about the status of the BCAL reconstruction
        code. -> David
     2. Schedule a discussion of parameters for code resident in the
        calibration database. -> Mark

    Retrieved from
    
"http://www.jlab.org/Hall-D/software/wiki/index.php/GlueX_Offline_Meeting%2C_January_26%2C_2011"

References

   34. 
http://www.jlab.org/Hall-D/software/wiki/index.php/GlueX-Collaboration-Jan-2011
   36. 
http://www.jlab.org/Hall-D/software/wiki/index.php/GlueX_Offline_Meeting%2C_December_15%2C_2010#Minutes
   40. 
https://halldweb1.jlab.org/talks/2011-1Q/offline-software.Kei-Moriya.2011-01-12.pdf
   42. https://halldnew.jlab.org/mantisbt