BLTWG Meeting 10/12/2021

Organization

• Time: 1:30 EST
• 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

Agenda

1. Announcements
2. Polarimetry
   • TPOL polarimetry update -- Michael D.
   • polarimetry from pair production -- Andrew S.
   • progress on CBSA calculations -- Glasgow group
   • polarimetry from hadron decays -- Alexander A.
3. Photon beam simulations
   • Bethe Heitler generation studies -- Richard J.
4. Photon beam systematics
   • tagging accidentals scaling factors
   • luminosity and flux normalization
   • updates to ccdb energy_calib for earlier run periods
   • reminder of Task Force: plan for writeup of current systematics
     • photon beam systematics overview -- Richard
5. PrimEx run (Sasha)
   • Repaired TAGH counters
   • HV settings for TAGH counters
   • Calibration of tagging detectors

- Energy calibration

- Time calibration

1. Diamond radiators
   • X-ray rocking curve run at CLS, planned for fall, 2021
   • order samples from HPHT diamond vendor? -- Richard
   • other topics?
2. Any other business