06/17/2020

Present: M.D., A.D., S.Š

General:

• • Quorum: do we need to write a GDH-specific appeal letter?
  • Elton's comments (only one from the collaboration so far).
  • Goal: submit the proposal sometimes Friday 19th (best) or this week end (acceptable), or Monday before 8am (deadline). What's left to be done for the proposal to be ready?

• M.D:
  • Provided estimate for the trigger rates and trigger+tagger rates from BH and Compton. Large rates are found, limiting our DAQ rate and reducing our stats by a factor of 0.36.
  • Implemented some of Elton's comments.

• S.Š:

• J. S.:

• A. D.:
  • Wrote to the collaboration re. new version of the proposal. (No reply at all.)
  • Added a small discussion on polarized background (Polarized Compton background is nearly fully suppressed because of the GDH SR on electron and because it's integrant is significant only near the electron mass << our nu)
  • Implemented Mark's results on BH and Compton background in the proposal. In particular, we now have a decent section on unpolarized backgrounds rather than a space-holder.
  • Updated the figures, photon flux used, accidental background, precision reached, run-time discussions to account of the ~2/3 drop in statistics.
  • We now propose to run 10 days at 4 GeV instead of 5 days (12 GeV run remains at 17 days).
  • Implemented some of Elton comments left after Mark's pass at them.
  • Starting to work on additional forms for the proposal.