TITLE: 12/25 Day Shift: 1530-0030 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Observing at 152Mpc
INCOMING OPERATOR: Corey
SHIFT SUMMARY:

Christmas Day Lockloss #1:
Happened on the OWL Shift last night. Very pecilar, Small-ish Vacuum pressure increase at EY happened seconds after the lockloss. Pressure increase seen at Mid Y as well.
Persons involved: Dave, Daniel, Gerardo, Sheila.
Seems like the Ion pump failure caused the lockloss and the time delay between the lockloss and the increase in pressure was just the speed of the gasses moving through the chambers.
Gerardo came out to site to check the Vacuum pressure & Ion pump at EY. I've also eneded up coming out here as well as a safety buddy.

Christmas Day Lockloss # 2:

Christmas Day Lockloss # 3
 

Relocking was fully automated except my request for an inital_alignment after the Earthquake.

Sheila, has asked me to try to update the H1:ASC-POP_A_YAW_OFFSET & PIT, for better stability in the while locking in CARM_TO_REFL & Resonance regions. I will try to do this tomorrow during the next lock. Since we are already locked now.

LOG:
Gerardo heading to EY and is still out there as I write this alog, I'll be onsite until Gerardo leaves.