BLTWG Meeting 08/04/2020

Organization

• Time: 1:30 EDT
• JLab meeting room: none
• 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
   • TPOL polarimetry update
   • Progress on CBSA calculations
   • Polarimetry from hadron decays
3. Photon beam systematics studies
   • energy-dependent flux normalization -- Justin
   • recent corrections to tagger hodoscope fluxes -- Sasha
   • updates to energy_calib for earlier run periods? -- pending agreement on method
   • tagging accidentals scaling factors for spring 2020 -- Beni
   • Beam flux normalization studies-- Sasha
4. Preparation for the upcoming run
   • communications issue with the TAGM frontend resolved -- Richard
   • columns 4-6 out of 102 have low gain, under investigation -- Richard
   • active collimator bias, initial observations -- Richard
5. Ongoing investigations
   • energy-dependent beam profile from fast raster -- Richard
   • variation in collimator transmission -- updates?
   • converter thickness systematics -- open investigation
   • other topics?
6. Any other business