Lockloss @ 21:15 UTC - link to lockloss tool
The lockloss tool tags this as WINDY (although wind speeds were only up to around 20mph) and there seems to be an 11Hz oscillation that starts about a second before the lockloss seen by all quads, PRCL, MICH, SRCL, and DARM.
H1 back to observing at 23:11 UTC. Fully automatic relock after I started an initial alignment soon after the last lockloss.
After H1 reached NLN, I ran the A2L script (unthermalized) for both P & Y on all quads. Results here:
| Initial | Final | Diff | |
| ETMX P | 3.35 | 3.6 | 0.25 |
| ETMX Y | 4.94 | 4.92 | -0.02 |
| ETMY P | 5.48 | 5.64 | 0.16 |
| ETMY Y | 1.29 | 1.35 | 0.06 |
| ITMX P | -0.67 | -0.64 | 0.03 |
| ITMX Y | 2.97 | 3.0 | 0.03 |
| ITMY P | -0.06 | -0.03 | 0.03 |
| ITMY Y | -2.51 | -2.53 | -0.02 |
New A2L gains were updated in lscparams and ISC_LOCK was loaded. I also REVERTED all outstanding SDF diffs from running the script (time-ramps on quads and ADS matrix changes in ASC). The A2L gains themselves are not monitored.
Ran coherence check for a time right after returning to observing to check to A2L gains (see attached). Sheila comments that this looks just a bit better than the last time this was run and checked on Feb 11th (alog82737).
Another lockloss that looks just like this one was seen 02/16 09:48UTC. Same 11 Hz oscillation 1 second before lockloss, seen in the same places.