Π polarizability Meeting Jan 8, 2020
Meeting Time And Location
10:00 EST (JLab time)
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Attending: Elton, Mark, Andrew, Ilya
- Previous meeting: Dec 18, 2019
- Tim has setup the first meeting to discuss the CPP geometry for next week Wed Jan 15 at 2 pm in TED 2504
- Update on Run
- Data Analysis - Andrew
- e-/pi- TMVA
- Andrew presented his preliminary TMVA analysis
- We realized that the TOF calibration may not be correct. It will be updated before further studies for next week
- The e/p ratio provides considerable e/pi separation on its own.
- Discussion of beam test
- Rates 70984 (Ilya) Presented TOF rates from test in December
-  TOF occupancy for horizontal and vertical scintillators and ratio
- Mark: Could be that the center 4 channels are ones that Beni identified as problematic at this morning's RC meeting
- Another explanation is that the horizontal counters are unshielded by the horizontal gap on the beamline between the two DIRC bars.
- We need to check with Beni about which channels are problematic and whether this problem is new or existed in December.
- Slides on DIRC Geometry (Elton)
- Collected some information on the DIRC, but more details are needed, especially gap along the beamline.
- Other business
- Next meeting