June 14, 2016, Analysis Working Group

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Meeting Time and Place

The meeting will be on Tuesday June 14, 2016 at 1:30 pm EDT. For those people at Jefferson Lab, the meeting will be in room A110.

Meeting Connections

  1. To join via a Web Browser, go to the page [1] https://bluejeans.com/115815824.
  2. To join via Polycom room system go to the IP Address: (bjn.vc) 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
  2. REST Production Status:
    • First run block: 11347-11555
      • Launch summary: 6503 jobs (130 TB EVIO), only 4 crashed, 22 plugins, 14 threads, ~6hrs each, ~7 GB RAM, ~6 days, up to ~500 jobs at once
      • Outputs: REST: ~13.5TB, Skims: ~360GB, Trees: ~130GB, Hists: ~90GB
  3. REST Production Preparations:
  4. Reconstruction Studies:
    • CDC Efficiency: Mike
    • FDC Efficiency: Alex A.
    • BCAL Hadronic Energy & Efficiency: Elton
    • BCAL Neutral Energy & Efficiency: Will
    • FCAL Hadronic Energy & Efficiency: Matt
    • FCAL Neutral Energy & Efficiency: Jon
    • SC Efficiency: Mahmoud
    • TOF Efficiency: Beni
    • Tracking Resolution & Efficiency: Paul, Simon
  5. Other Studies:
    • Triggering Efficiency: Alex S., Justin, Elton
    • Beam Polarization: Justin, Nathan
    • Flux: Justin
  6. AOB


  • Attendance: Alyssa, Tegan, Brad, Mike S., Will, George, Matt Shepherd, Mike Dugger, Naomi, Sean, Eugene, Alex A., Alex B., Alex S., Adesh, Jane, Mark Ito, Simon, Mark Dalton, Nathan
  • Launch Status:
    • Almost done (5 jobs remain). See the agenda above for details.
  • Calibration Status:
    • TAGH calib: Some runs need to be fixed (bad offsets), should be done by end of today. Ditto for timewalks.
    • TAGM calib: Everything is ready, save for the discussion in "Changes to sim-recon" below.
    • PS calib: Nathan calibrated timing offsets, is ready to go.
    • CDC time-to-distance: Mike will check in constants by end of day.
    • FCAL gains: Done tweaking non-linear constants, need to be checked into CCDB. However, won't be included in the launch. See discussion in "Changes to sim-recon" below.
  • Batch 2 Readiness Status:
    • We should be ready to launch batch 2, runs 11556 - 11678, sometime in the next 24 hours.
  • Changes to sim-recon:
    • Adesh originally hard-coded his non-linear corrections to the FCAL shower energies in sim-recon. He needs to modify sim-recon to remove these, and to put them into the CCDB. We won't modify sim-recon for the launch though: it will remain constant. Instead, the updated non-linear corrections will not be applied to the next batch of runs: only the initial corrections. However, the difference between these is largely unnoticeable.
    • Alex Barnes needs to modify sim-recon, because there is a problem with the reconstruction for the counters in which all rows are read out: If all 5 rows are hit, it creates 6 separate DBeamPhotons: One with the sum, and one for each row. This results in extra background, which is generally out-of-time, so we decided to continue the launch with the software as-is. Alex is checking in a fix that will appear in the next launch.
  • The third block of runs to launch will be: 10331 - 10913. We will discuss readiness for these runs during the calibration meeting tomorrow.
  • Reconstruction/etc. studies: Expect summary updates from detector groups over the course of the summer.