TITLE: 06/05 Eve Shift: 2300-0800 UTC (1600-0100 PST), all times posted in UTC
STATE of H1: Observing at 132Mpc
INCOMING OPERATOR: TJ
SHIFT SUMMARY:

IFO is in NLN and OBSERVING as of 06:09 UTC

IFO was in DOWN for the majority of the shift due to 40mph wind gusts that were preventing locking (primarily ALS). At 04:00 UTC, the wind finally dropped below 30mph. This was the locking process:

04:05 UTC - INITIAL ALIGNMENT - I had to get involved to alter the states for ALSY since it was having issues with the WFs (wind was still around 30mph here. This was the bulk of time spent in initial alignment.

04:47 UTC - SRM WD tripped during SRC Align (during the usual many saturations - have never seen a WD trip before during though), prompting untripping intervention

04:55 UTC - Initial alignment complete, moved into full IFO locking

05:42 UTC - NLN Acquired fully automatically and without going into PRMI (Dying wind helped with this I presume). There was some extra time spent in ENGAGE_ASC_FOR_FULL_IFO due to non-converging signals

06:09 UTC - OBSERVING - it took 30 minutes because I accepted SQZ diffs that I thought were preventing us from going into OBSERVING only to realized that we weren't squeezing for whatever reason (and thus not in truly complete NLN). I went into the SQZ screen and requested Freq. Dep. SQZ and a few minutes later, we were in full NLN. I then went back and re-accepted those diffs that I erroneously accepted. For the sake of book-keeping, I've attached both versions of each. I was briefly thrown off by an ISS Pump message telling me to troubleshoot via an alog but this was just a symptom of there not being any squeezing at all. I do not know why IFO didn't automatically go into squeezing as it usually does. This was my only intervension during locking.

Other:

• Wind gusts have drastically reduced over the last 3 hours (starting 4:50 UTC), hovering at around 15 max
• Secondary microseism has steadily increased, crossing the 90% threashold around one hour ago (6:50 UTC)

LOG:

None