BLTWG Meeting 11/09/2022

Organization

• Time: 3:00 EDT
• JLab meeting room: none
• Connecting: detailed instructions are here
  • web browser: connect using zoomgov
  • phone: 833 568 8864 US Toll-free
• meeting ID: 161 038 5436
• passcode: 097756

Agenda

1. Announcements
2. Accelerator update -- Edith
   • Any issues with beam stability at the radiator or collimator?
   • Next steps toward a 1cm x 1cm beam spot raster at the photon collimator?
3. Polarimetry
   • TPOL polarimetry update -- Michael
   • polarimetry from pair production -- Andrew
   • polarimetry from hadron decays -- Alexander A.
   • check using CBSA (enhancement) -- Richard
4. Calibration and systematics studies
   • TAC (CCAL) normalization results -- Sasha
   • PS and tagger calibration -- Sasha
   • Luminosity determination for PrimEx -- Sasha
   • Photon beam systematics writeup -- Richard
5. Ongoing tagger work
   • Reference document for TAGM energy changeover procedures -- Ellie
   • Understanding the TAGM photon yield decline over time -- Mezmur
   • Preparations and plans for visit to lab in January -- Ellie, Mezmur
6. Diamond radiators
   • plans for the next run at CLS -- Zisis
7. Any other business