H1's been observing for almost 9hrs and winds have leveled out at around 10mph (gusts to 20mph).
Sun Apr 21 10:10:40 2024 INFO: Fill completed in 10min 36secs
TITLE: 04/21 Day Shift: 15:00-23:00 UTC (08:00-16:00 PST), all times posted in UTC
STATE of H1: Observing at 50Mpc
OUTGOING OPERATOR: Ryan S
CURRENT ENVIRONMENT:
SEI_ENV state: CALM
Wind: 12mph Gusts, 9mph 5min avg
Primary useism: 0.05 μm/s
Secondary useism: 0.17 μm/s
QUICK SUMMARY:
H1's been locked 5hrs and after a quiet few hours, seeing breezes starting to pick up in the last 40min. There was a MINOR PSL dust monitor alarm at 2am local (during the winds starting during Ryan C's shift.
No plans for Calibration or Commissioning down time today.
Getting around to finishing the Locking Survey for overnight. Although h1 was down 4hrs, looks like no phone calls for help---H1 battled on during the latter half of last night's wind storm getting fairly far in ISC LOCK (3x to Transition etmx & 2x to carm150pm). And then once the winds got down to 10mph this is when h1 had a chance.
(All in all, H1 was trying for hours on its own and didn't get stuck anywhere through the wind storm [maybe if H1 Manager tried an Alignment it would have helped, but really once the winds died, H1 automatically made it through without an alignment. It was nice to have the Verbal log history go back to follow the story and complete the Locking Survey entry and see how the night went.)
Microseism: also forgot to mention our low microseism has slowly drifted UP over the last 15hrs (from below the 50th percentile line to above it.
I should mention that I did receive a call last night at 02:00 PDT from H1_MANAGER requiring assistance. It looked like H1 was having trouble locking with two locklosses at TRANSITION_FROM_ETMX (very likely due to high winds). As the winds had died down a bit by that point, I decided to let H1 keep trying, as ALS and DRMI were consistently locking easily. On the next lock acquisition attempt, H1 made it to low noise without issue.
So, while H1 did call for assistance overnight due to high winds causing locking difficulties, I did not need to intervene for H1 to eventually reach NLN (and I don't expect doing so would have sped up the process).
TITLE: 04/21 Eve Shift: 23:00-07:00 UTC (16:00-00:00 PST), all times posted in UTC
STATE of H1: Observing at 26Mpc
INCOMING OPERATOR: Ryan S
SHIFT SUMMARY: After relocking we stayed locked the whole shift, the wind started to pickup around 03:00 UTC.
05:30 UTC Superevent S240421ar
Lock#1
Relocking at green arms, went through prmi, chech_mich then prmi again before we could get DRMI
Lock#2
Strugged to get back up due to the wind knocking ALS out, the forecast has the winds calming down around 10:00UTC
LOG:
| Start Time | System | Name | Location | Lazer_Haz | Task | Time End |
|---|---|---|---|---|---|---|
| 23:17 | CAL | Francisco | PCAL lab | LOCAL | Checks | 23:24 |
Wind was gusting up to 40 mph around the time
https://ldas-jobs.ligo-wa.caltech.edu/~lockloss/index.cgi?event=1397714645
We've been locked for almost 3 hours, range hovering around 160
TITLE: 04/20 Day Shift: 15:00-23:00 UTC (08:00-16:00 PST), all times posted in UTC
STATE of H1: Observing at 156Mpc
INCOMING OPERATOR: Ryan C
SHIFT SUMMARY:
Lockloss Sandwich: Shift started with a lockloss during the first 30min and a lockloss near the last 30min of the shift.
Also posting a spectrum of the HAM5 STS seismometer during Richland earthquake---mainly because when Robert walked in the Control Room he was surprised to not see anything on the low-frequency seismic plots on nuc5....but it's mainly because we don't have 1-3Hz up there. The attached spectrum does show a big bump in that band for sure. (along with lines at ~7Hz and around 32Hz.)
LOG:
TITLE: 04/20 Eve Shift: 23:00-07:00 UTC (16:00-00:00 PST), all times posted in UTC
STATE of H1: Lock Acquisition
OUTGOING OPERATOR: Corey
CURRENT ENVIRONMENT:
SEI_ENV state: CALM
Wind: 2mph Gusts, 1mph 5min avg
Primary useism: 0.02 μm/s
Secondary useism: 0.10 μm/s
QUICK SUMMARY:
Back to Observing at 00:09 UTC
After coordinating with LLO & notifying Virgo, went with running the Saturday Calibration Measurements (broadband [~5min] + simullines [~25min]) at ~ 2200utc.
LOCKLOSS (at 2225utc) During Measurement!! Sadly, it looks like we had a lockloss toward the end of the Calibration. Vlad said we should let Louis know so he could look at the script to see if the excitations are too strong toward the end of the Simulines measurement.
Today is my first time being on shift to attempt a Saturday calibration measurement, but have had a few wrinkles:
No other notables for H1 from the shift
Sat Apr 20 10:09:46 2024 INFO: Fill completed in 9min 42secs
For some reason none of us got texts for this fill, but subsequent test texts were getting through and fill emails were received as normal. I restarted the locklossalert service on cdslogin at 10:23 PDT. Tested it by sending test texts, we will see if this fixes our cp1 fill text issue tomorrow.
TITLE: 04/20 Day Shift: 15:00-23:00 UTC (08:00-16:00 PST), all times posted in UTC
STATE of H1: Observing at 157Mpc
OUTGOING OPERATOR: Ryan S
CURRENT ENVIRONMENT:
SEI_ENV state: CALM
Wind: 20mph Gusts, 18mph 5min avg
Primary useism: 0.07 μm/s
Secondary useism: 0.11 μm/s
QUICK SUMMARY:
H1 had a lockloss about 4.5hrs ago, but has been UP about 3hrs.
For the Alarm Handlers there was a "Not Connected Error" window up (and WHITE alarm for dust monitors) at 2:23amlocal which cleared up in 3 seconds.
For those who felt it (or heard) there was a M2.8 earthquake in Richland last night (at 9:18pm Local). H1 rode right through it and it was only seen on our seismometer DMTs for the 3-10 & 10-30Hz bands (it's the orange EX x-axis line at about 11hrs --see attached-- (I happened to look at it last night after my sister texted me about it while she was working at the Emerald; she (and I) didn't feel it.) :)
Calibration measurement scheduled for 11:30amLocal /1830utc.
Here's a zoom-in of the Richland EQ (circled in red) as seen from the Control Room FOMs.
https://earthquake.usgs.gov/earthquakes/eventpage/uw61998221/executive
TITLE: 04/20 Eve Shift: 23:00-07:00 UTC (16:00-00:00 PST), all times posted in UTC
STATE of H1: Observing at 157Mpc
INCOMING OPERATOR: Ryan S
SHIFT SUMMARY: We stayed locked the whole shift, 1 small local EQ. The range hovered around 155-165
Bit of local motion that was reported as a 2.7 EQ in Richland, WA on USGS and EMSC at 04:19UTC
Virgo went down later in the evening (around 06:00UTC) and wasn't able to relock from their green ALS laser needing to be fixed (new amplifier) Valog 64030
LOG:
| Start Time | System | Name | Location | Lazer_Haz | Task | Time End |
|---|---|---|---|---|---|---|
| 20:52 | pcal | tony | pcal.lab | y | PCal Work | 23:22 |
| 23:33 | CAL | Tony | PCAL lab | LOCAL | PCAL work | 01:33 |
| 23:41 | CAL | Francisco | PCAL lab | LOCAL | Help Tony | 23:59 |
We've been locked for about 4 hours. The range has been just over 160.
TITLE: 04/19 Eve Shift: 23:00-07:00 UTC (16:00-00:00 PST), all times posted in UTC
STATE of H1: Commissioning
OUTGOING OPERATOR: Corey
CURRENT ENVIRONMENT:
SEI_ENV state: CALM
Wind: 12mph Gusts, 9mph 5min avg
Primary useism: 0.03 μm/s
Secondary useism: 0.12 μm/s
QUICK SUMMARY:
Back into NLN at 23:06 UTC and we returned to OBSERVING at 23:15 UTC after Robert took apart his PEM setup/EXC
26 min after mid-shift entry, there was a lockloss (happened when I was out making lunch). It is breezy out and we also were running through a 5.4 Mexico eq at the time. Currently re-locking (after a needed Alignment).