TITLE: 10/30 Eve Shift: 2330-0500 UTC (1630-2200 PST), all times posted in UTC
STATE of H1: Observing at 153Mpc
INCOMING OPERATOR: TJ
SHIFT SUMMARY:

IFO is in NLN and OBSERVING as of 01:51 UTC (with a brief drop for cal sweep from 04:21 to 04:58 UTC)

Today we reached Nominal Low Noise for the first time since the PSL NPRO Swap (alog 80929) Corrective Maintenance downed H1 last week (10/22). Despite warnings of a rough shift due to first-time recovery, the IFO must've missed being locked because we were able to lock to NLN and get into OBSERVING by early evening!

The first lock acquisition was short, losing lock seemingly to the IMC at 00:39 UTC, after only 33 mins of NLN and 10 mins of OBSERVING. Lockloss alog 80932.

There were some SDF Diffs, mostly TCS-related with some HAM8 Related. After talking to the relevant people, TJ dealt with the TCS ones while Jim told me to accept the HAM8 ISI ones (attached screenshot).

The second lock acquisiton was fully automatic, and only took 1hr 12 mins to lock, which is good even by non-maintenance standards!

A calibration sweep was done (dropping out of OBSERVING for 30ish mins) with a thermalized IFO - alog 80933

Today also marks the first day of triple interferometer (H1, L1, V1) observing since OCTOBER 10.

LOG:

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