Ops Shift Transition: 12/15/2019, Eve Shift 00:00–08:00 (16:00-00:00) - UTC (PT)
State of H1: Locked
Intent Bit: Observing
Weather: 0-10 mph wind
Primary 0.03 – 0.1Hz: 0.01 um/s
Secondary 0.1 – 0.3Hz: 0.7 um/s
Outgoing Operator: Jeff
Quick Summary: Locked and Observing for 15.5 hours. Microseism on the rise
All quiet on the LHO front. The range is between 114 and 117Mpc.
Winds are mostly Calm to Light. The 0.1-0.3Hz microseism is on an upward trend, as another storm system is coming ashore. There have been a large number of earthquakes of Mag5.0 or less, which have not been a problem.
TITLE: 12/15 Owl Shift: 08:00-16:00 UTC (00:00-08:00 PST), all times posted in UTC
STATE of H1: Observing at 115Mpc
INCOMING OPERATOR: Jeff
SHIFT SUMMARY: Locked for 7h30
LOG:
TITLE: 12/15 Owl Shift: 08:00-16:00 UTC (00:00-08:00 PST), all times posted in UTC
STATE of H1: Earthquake
OUTGOING OPERATOR: Niko
CURRENT ENVIRONMENT:
SEI_CONF state: EARTH_QUAKE
Wind: 7mph Gusts, 5mph 5min avg
Primary useism: 0.34 μm/s
Secondary useism: 0.28 μm/s
QUICK SUMMARY: Lockloss due to large earthquake but Niko's lock attempt is looking good so far.
TITLE: 12/14 Eve Shift 00:00 – 08:00 (16:00-00:00), all times posted in UTC
STATE of H1: Locking
INCOMING OPERATOR: Camilla
SHIFT SUMMARY: Quiet shift until 6.9 EQ in the Phillipines. Leaving IFO at PREP_ASC_FOR_FULL_IFO
LOG:
06:21 (22:21) 6.9 magnitude EQ incoming from Phillipines, well within large EQ range
06:29 (22:29) Going to EQ seismic configuration
06:37 (22:37) Lockloss from EQ spike
Ops Shift Transition: 12/14/2019, Eve Shift 00:00–08:00 (16:00-00:00) - UTC (PT)
State of H1: Locked
Intent Bit: Observing
Weather: 0-5 mph wind
Primary 0.03 – 0.1Hz: 0.01 um/s
Secondary 0.1 – 0.3Hz: 0.8 um/s
Outgoing Operator: Jeff
Quick Summary: Locked and Observing for 4 hours. Microseism down a little.
Had one GRB-Short alert at start of shift. Lost lock at 18:20 (10:20), reason unknown. Relocked the IFO without operator intervention. The were two lock losses at INCREASE_POWER, but otherwise the auto relock went well. Getting control room cleaned up and ready for Tour Saturday. Microseism is elevated but starting to come down. No other problems noted.
16:14 (08:14) GRB-Short Alert. E357332 (598032876) Lat = 17.45sec, Trig_Dur = 0.016sec. Spoke with LLO. Entered INJ_KILL state, and stand down until 06:30 (08:30).
Ops Shift Transition: 12/14/2019, Day Shift 16:00 ? 00:00 (08:00 -16:00) - UTC (PT)State of H1: Locked at NLNIntent Bit: ObservingWeather: ?Skies are foggy. Temperatures are in the upper 20s to lower 30s. The winds are a Light Breeze. ???Primary 0.03 ? 0.1Hz: 0.02um/sSecondary 0.1 ? 0.3Hz: 0.08um/sOutgoing Operator: CamillaQuick Summary: The IFO has been in Observing for some 24.5 hours. The range is around 116.7Mpc. All looks good at this time. ???
TITLE: 12/14 Owl Shift: 08:00-16:00 UTC (00:00-08:00 PST), all times posted in UTC
STATE of H1: Observing at 116Mpc
INCOMING OPERATOR: Jeff
SHIFT SUMMARY: Quiet night, locked for 24h27m.
TITLE: 12/14 Owl Shift: 08:00-16:00 UTC (00:00-08:00 PST), all times posted in UTC
STATE of H1: Observing at 115Mpc
OUTGOING OPERATOR: Niko
CURRENT ENVIRONMENT:
SEI_CONF state: WINDY
Wind: 6mph Gusts, 4mph 5min avg
Primary useism: 0.05 μm/s
Secondary useism: 0.68 μm/s
QUICK SUMMARY: Microseism still raised but reducing. Very foggy outside. Locked 16h40.
TITLE: 12/13 Eve Shift 00:00 – 08:00 (16:00-00:00), all times posted in UTC
STATE of H1: Observing
INCOMING OPERATOR: Camilla
SHIFT SUMMARY: Quiet shift, one medium earthquake. Locked and Observing for 16.5 hours.
LOG:
00:03 (16:03) Jeff, fire department to EX -- check on dead battery
Jeff, fire department back from EX
05:43 (21:43) 5.9 EQ from Vanuatu underway. SC switch outputs moving between red and green very quickly
05:45 (21:45) Switching to EQ seismic configuration
05:53 (21:53) Switching back to WINDY configuration
Ethan, Jenne, Guillermo
There is some presence of scattering arches between 20Hz-50Hz in the GW channel in the last few days.
These arches seem to appear every ~3s, so the surface from which the scattered light is being reflected is moving back and forth with a frequency of ~1/6s.
According to the Scattering Summary Pages, ETMX has some excess motion that is coincident with the scattering glitches. Here is one example: https://ldas-jobs.ligo-wa.caltech.edu/~detchar/summary/day/20191211/detchar/scattering/
Also, we appreciate scattering arches in the DHARD signals at even lower frequencies, approximately at 10Hz. Here are a couple of examples:
https://ldas-jobs.ligo-wa.caltech.edu/~detchar/hveto/day/20191212/1260144018-1260230418/scans/1260213392.8125/
https://ldas-jobs.ligo-wa.caltech.edu/~detchar/hveto/day/20191212/1260144018-1260230418/scans/1260224771.1875/
This investigation is somewhat similar to the one made at LLO in November 2018:
https://alog.ligo-la.caltech.edu/aLOG/index.php?callRep=41960
I noticed that the MEDM RED/YELLOW/GREEN field associated with CP4's dewar level had changed today from the nominal RED (CP4 is empty - decommissioned) to YELLOW and 1.3% full up from the nominal ~0% full -> I think that this is a bogus indication and should be ignored.
See attached plot for dewar level, behaviour changes on 12/08/2019 around 22:00 utc, around 14:00 local time.
For now I've adjusted the high alarm level for this channel, from 1.0 to 1.5, field is green now.
Hardware watchdogs (HWWD) flashing red (momentary LED current monitor alerts) is normal. If they are constantly red for several minutes then an investigation is needed. After 40 contiguous minutes in this alarm state, and if the software watchdogs had not kicked in, then the ISI coil driver chassis would be powered off by the HWWD.