TITLE: 12/16 Day Shift: 16:00-00:00 UTC (08:00-16:00 PST), all times posted in UTC
STATE of H1: Lock Acquisition
INCOMING OPERATOR: Cheryl
SHIFT SUMMARY: Struggled to get locks longer than a few minutes in Low Noise. DRMI would lock quickly, but not with any robustness. Bringing the ASC error signals may help a bit. Currently Dan Brown and Danny Vander-Hyde are changing the ring heater settings back from the changes they made last night. The most recent lock loss we had just as we reached NLN, Verbal gave us a LSC tidal X error. I trended the channel that verbal looks at, and it did seem to go into error a few times around the lock loss. The last error that the channel has seen was around 14:32 UTC today, and there have been many more before that. The Verbal logs dont seem to have these show up though. Perhaps this is somewhat common during lock losses, but Verbal just picked it up this time?
LOG:

• 1938 - Observing
• 1940 - Lock loss
• 2031 - Observing
• 2044 - Lock loss
• 2234 - Observing
• 2256 - Lock loss
• 2337 - Lock loss from NOMINAL_LOW_NOISE with a LSC tidal X error?