BLTWG Meeting 02/18/2020

Organization

• Time: 1:30 EDT
• JLab meeting room: CEBAF Center F324-325
• Connecting: detailed instructions are here
  • H.323 ip address: 199.48.152.152
  • web browser: https://bluejeans.com/536076821
  • phone: 408-740-7256 or 888-240-2560
• Conference id: 536076821
• Present:

Agenda

1. Announcements
2. Polarimetry Updates
   • TPOL update
   • hadronic polarimetry
3. Priority issues for immediate focus
4. Photon beam systematics
   • quantitative impact of coherent edge smearing
   • tagging accidentals scan
5. Spring 2020 run issues
   • variation in collimator transission function -- Richard
     • systematics of PS/tagger ratio variations -- Richard
     • PS rate fluctuations in time vs position -- Hovanes
   • charge-up gain shift in active collimator
     • ...
   • repositioning/realignment of JD70-105
     • argument for realigning diamond JD70-105 -- Richard
     • plan for repositioning of beam spot on diamond in 45/135 orientation
6. Diamond radiator status
7. Any other business