MOM update Oct 10, 2017¶

• In the last week
  • 3 different cooling channel settings
    • Flip mode, 3T
    • Solenoid mode, 2T
    • Solenoid mode, 3T
    • 3-140, 6-140, 10-140 beamline settings (1M, 1M, 2M triggers at each).
    • Momentum scans 170, 200, 240 MeV
  • Field-off scattering runs overnight between ramp-downs and ramp-ups
  • Beamline tuning

• LH2 has been very stable

• Issues:
  • Heat load with M2D and 3T setting led to monitoring SSD pressure every 30 minutes
  • Had an overnight run with M2D in wrong polarity before it was verified & rectified
  • Rare automatic ramp-down of some BL magnets
  • 1 dead EMR SAPMT
  • Alarm handler crash once
  • Backup air compressor keeps kicking in and out -- related to when ISIS site backup compressor had issues, but that's supposedly been rectified, so not clear why our backup keeps coming on and off
  • Tracker He bubbler flow rate requires periodic check/adjustment

• Alarm handler has been quite stable, a few more limit changes were implemented, and some more to be done

• Plan
  • CC ramping down now for change to flip mode (with M2D)
  • Ramp up tomorrow
  • Run flip mode settings over next few days until LH2 empty next week