Lockloss 1404346170
Quite sudden, I'm not seeing anything on the lock loss ndscopes, even the many new ones. DIAG_MAIN reports that the ref cav transmission is low, which it seems to have been this way for the past 4 days. This seems really low and potentially an issue, but we've had locks within these last 4 days so perhaps not. I'm running into the same issue that Corey had this morning with ALS. It seems that it won't stay locked. I'm still catching up on the week's alogs, so maybe I'll find a hint soon.
Back to observing at 0232 UTC.
ALS wouldn't hold a lock, and I still can't figure out exactly why. Just like with Corey on hist shift, it just decided to hold long enough for DRMI. There was one lock loss here, but then a bit later it worked again and we got off of ALS and then it was all the way up to low noise. ITMX mode 13 is still just as high as before, I'll continue to try Rahul's settings.
Noticing now that the COMM beat note was very low and slowly trended up over time. This perhaps allowed for longer locks, and eventually long enough to get off ALS. Looking back at the last few locks, it's definitely lower than it has been even over the last few days. I'm hesitant to touch PR3, but this doesn't seem to be working.
