Run Planning Meeting Notes, October 7 - October 13, 2021

Thursday, October 7

1. In last 24 hours:
   • Early Riser: https://logbooks.jlab.org/entry/3919395
   • Owl summary: https://logbooks.jlab.org/entry/3919305
   • Swing summary: https://logbooks.jlab.org/entry/3919178
   • Day summary: https://logbooks.jlab.org/entry/3918973
   • Production run started at 20:58
   • 0.21B triggers with hot & cold Helium empty target cell
   • 0.7B triggers with He target full
   • Target cooled down and filled with liquid He4
   • HallD cavity BPM calibration, https://logbooks.jlab.org/entry/3919129
   • Gas bottle changed, https://logbooks.jlab.org/entry/3919183 (Elton)
2. Issues:
   • Solenoid alarm (Amy)
   • Target software, https://logbooks.jlab.org/entry/3919168 (Carlin)
   • Target, LH2 temperature interlock not changed, https://logbooks.jlab.org/entry/3918975 (Elton)
   • LED skim, https://logbooks.jlab.org/entry/3918989
   • Camera https://logbooks.jlab.org/entry/3918788
   • Bleedthrough Different Beam structure after target change (Tuesday evening)
3. Plan:
   • 200 nA CDC & FDC turn off (3 shifts)
   • 100 nA CDC & FDC turn off (2 shifts)
   • MCC will run the Moller at helicity flip rate for HallB which might disrupt HallD beam
   • If Hall A is back online today (unlikely most probably tomorrow)
     • Check radiation
     • HARP scan
     • Bleedthrough run with 100 kHz random pulser, HallD laser turn off, and no beam for 40mn