ALL TIMES IN UTC
Post-Maintenance: IFO is actively locking; caveat-> excess noise that wasn’t present prior to maintenance (1Hz comb and some high freq). Calibration going on. Wind calm. Seismic calm. Patrick on Evening duty.
Activity Log: Not much activity. Folks here from the day eventually left.
7:00 Sheila, Evan, Dan and Jenne on site doing their thing(s)
7:29 Got SDF cleared out except for CALCS (will remain Red with diffs)
7:29 Evan running excitations on H1LSC is the only thing left that is keeping H1 from Observing mode at this time
8:27 Added OMC whitening. Not able to set the Intent Bit
8:56 Evan and Sheila leaving site.
12:09 ETMY saturation
12:15 LLO dropped out of science mode
12:28 ETMY saturation
12:59 ETMY saturation (2)
13:45 ETMY saturation
13:56 Took IFO to Commissioning mode for Richard to investigate the 1Hz comb in PRCL
13:57 ETMY saturation (3)
14:04 Set OIB/OOM back to Undisturbed/Observing. Noise in PRCL successfully removed
LOCK LOG:
7:00 Locked at NOMINAL_LOW_NOISE
8:43 OIB/OOM set after Evan figured out how to clear the ODC Observation Ready bit.
Summary:
Uneventful night. IFO locked for ~8 hours.
ETMY saturations started to occur midway through the shift. The first small one didn’t seem to be related to typical ETMY saturations.
Took IFO out of science mode momentarily for noise maintenance in PRCL which was remedied by Richard McCarthy.
Handing off to Jeff B