Run Planning Meeting Notes, November 11 - November 17, 2021

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Friday November 12

  1. Last 24h:
    • recorded 2.2B triggers on diamond
    • improved convergence: before and after
    • ... but the transmission went down by ~15% [1], [2]
    • ccdb for 9000+ runs [3]
    • TAGH timing offset changed [4]
    • restoring communications with FCAL bases [5]
  2. Issues:
    • bad f250 in TAGH [6] - no longer an issue (Sasha power-cycled the crate)
    • transmission - Hovanes will do AC scan when the beam is back after 10am
  3. Plan:
    • Down starting at 10am: for 1+ hours (Hall A changes to 4 passes) - FCAL items will be surveyed
    • Continue production at 150nA on diamond
  4. Analysis update

Thursday November 11

  1. Last 24h:
    • Down till 3:30pm:
      • 10 FCAL bases replaced [7]
      • CDC/FDC? gas mix alarm [8]
    • Harp scan [9]
    • Recorded 800M+ events with diamond/amo (LHe4 target)
    • lock on AC disabled this morning [10]
  2. Issues:
    • bad f250 in TAGH [11]
  3. Plan:
    • Continue production at 150nA on diamond w/o AMO (next AMO run Nov 14)
    • nudge the coherent peak every time when changing 0/90 to 45/125 and PERP to PARA
    • Expect 1+ hours down when Hall A changes to 4 passes - not clear when