September 26, 2016, Analysis Working Group

Meeting Time and Place

The meeting will be on Monday September 26, 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] https://bluejeans.com/115815824.
2. To join via Polycom room system go to the IP Address: 199.48.152.152 (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
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4. More information on connecting to bluejeans is available.

Agenda

1. Announcements
   • Reconstruction Launch
   • Analysis Launch
2. Collaboration Meeting October 6-8, 2016
3. Reconstruction Studies
4. AOB

Reconstruction Studies

Beamline

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

Tracking

• CDC Efficiency (Mike)
• FDC Efficiency (Alex A.)
• Track Reconstruction (Simon)
• Tracking Means, Resolution, & Efficiency (Paul, Simon)
  • Potential source of difference between version 2 and version 1 REST production: [2]

Calorimeters

• 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 (All)

Channel Reconstruction, Triggering, Acceptance

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

Minutes

• Announcements
  • Reconstruction launch ver02 is bad and should not be used for DNP talks, people should use ver01 instead. This is due to problems with the track reconstruction.
  • Analysis launch ver04, including the latest user plugins, was run over ver01 of the reconstructed data.

• Collaboration Meeting
  • If you will not be giving a dedicated talk on your topic, then send Paul Mattione a few slides about your studies and he will include them in his overview talk.

• Beamline
  • No major updates

• Tracking
  • Simon showed that the problem with the reconstruction appears to be with the FDC timing offsets. The FDC timing was not used for the ver01 launch, so it was not a problem before. By hand-aligning the offsets for one file (shift by ~13ns) the p2pi yields ~double.
  • When the FDC timing is calibrated and fixes to the detector geometry are included, then we'll do another reconstruction launch.

• Calorimeters
  • No major updates

• Particle ID
  • No major updates

• Channels & Trigger
  • No major updates