aLIGO LHO Logbook

LHO General

corey.gray@LIGO.ORG - posted 03:54, Thursday 15 August 2019 (51292)

Mid Shift Status: H1 Not Good (but ASC seems OK)

Observatory Mode = CORRECTIVE MAINTENANCE due to H1 having problems.

Have been able to get through ASC steps past LOWNOISE ASC, but repeatedly (3x) had a lockloss at LOWNOISE_COIL_DRIVERS.
Since the above state is after getting to 37W, I'm guessing alignment should be OK.
Tried running through LOWNOISE_COIL_DRIVERS by hand, but not sure if I did it correctly (had a lockloss nonetheless).
At any rate, will try this one more time (each attempt takes ~45-90min to get there), and if there's another lockloss, I'm inclined to try an alignment (with hesitation), or wait for the day crew.