November 7, 2016, Analysis Working Group

From GlueXWiki
Jump to: navigation, search

Meeting Time and Place

The meeting will be on Monday November 7, 2016 at 2:00 pm EDT. For those people at Jefferson Lab, the meeting will be in room F224-225.

Meeting Connections

  1. To join via a Web Browser, go to the page [1]
  2. To join via Polycom room system go to the IP Address: ( and enter the meeting ID: 115815824.
  3. To join via phone, use one of the following numbers and the Conference ID: 115815824.
    • US or Canada: +1 408 740 7256 or
    • US or Canada: +1 888 240 2560
  4. More information on connecting to bluejeans is available.


  1. Announcements
    • Reconstruction Launch Status
  2. Reconstruction Studies
  3. AOB

Reconstruction Studies


  • Beam Polarization (Justin, Mike, Nathan)
  • Beam Energy (Nathan, Richard)
  • Flux (Justin)


  • CDC Hit Efficiency (Mike)
  • FDC Hit Efficiency (Alex A.)
  • Geometry & Alignment (Mike, Simon, Lubomir)
  • Track Reconstruction (Simon)
  • Tracking Means, Resolution, & Efficiency (Paul)


  • BCAL
    • Shower Clustering (Will)
    • Neutral Energy & Efficiency (Will)
    • Hadronic Energy & Efficiency (Elton)
  • FCAL
    • Neutral Energy & Efficiency (Jon)
    • Shower Clustering (Matt)
    • Hadronic Energy & Efficiency (Matt)

Particle ID

  • SC Efficiency (Mahmoud)
  • TOF Efficiency (Beni)
  • Particle ID (TOF, BCAL, FCAL, CDC)

Channel Reconstruction, Triggering, Acceptance

  • Triggering Efficiency (Alex S., Elton)
  • ρ (Alex A.)
  • ω→3π (π0 in BCAL, FCAL, both) (Mike S.)
  • φ→2K (Alex B.)
  • Charged 4π (Alex A.)



  • Reconstruction launch started on Friday and is running smoothly.
  • We will have an analysis launch following the reconstruction launch. If you have analysis plugins you want to run, you must check them into your home area on svn and notify Alex A. by next Monday.
  • Sean will work on organizing the efforts for the next simulation launch, which will try to match the new reconstruction launch.


  • The electron beam energy will be stored in the CCDB on a run-by-run basis. We can do it on an event-by-event basis, but the variation with time is small and this is probably overkill. Richard is working on studying the EPICS data to produce beam energies for each run.


  • Wire-by-wire FDC timing calibrations have been shown to improve the FDC hit efficiencies by ~1%. These are still be investigated, and were left out of the reconstruction launch.
  • Mike is working on a systematic method of converging on alignment constants for the drift chambers. Also, he fixed a 600 micron shift of the drift chambers that had been previously missed. This fix was included in the reconstruction launch.


  • Elton will study the run dependence of the inefficient BCAL module so that it can be included in the next simulation launch.