Sun Jun 18 10:08:50 2023 INFO: Fill completed in 8min 49secs

Lockloss @ 15:21 UTC - 0:29 into the lock stretch. Multiple earthquakes from Tonga coming through; this was likely the 5.7 magnitude quake that immediately followed a 5.1

TITLE: 06/18 Day Shift: 15:00-23:00 UTC (08:00-16:00 PST), all times posted in UTC
STATE of H1: Observing at 135Mpc
CURRENT ENVIRONMENT:
    SEI_ENV state: SEISMON_ALERT
    Wind: 21mph Gusts, 16mph 5min avg
    Primary useism: 0.10 μm/s
    Secondary useism: 0.12 μm/s
QUICK SUMMARY: Taking over from Austin. H1 is locked and has just started observing in the last 10 minutes.

• CDS, SEI, SUS, dust monitors all good
• Earthquakes from Tonga incoming

TITLE: 06/18 Owl Shift: 07:00-15:00 UTC (00:00-08:00 PST), all times posted in UTC
STATE of H1: Observing at 132Mpc
SHIFT SUMMARY:

- Lock #1:

• Arrived with H1 in observing only to lose lock about 10 minutes later

- Lock #2:

• Relocking was entirely automated
• Acquired NLN @ 8:02, OBSERVING @ 8:11
• EX saturation @ 8:14
• 9:19 - 5.0 EQ from Canada, ground motion was low enough for us to hold on to the lock
• Lockloss @ 13:28

- Lock #3:

• ALS X went through INCREASE FLASHES 2x
• Ran through PRMI which went smoothly - entire locking process was automated
• 14:49 - 5.7 EQ from Tonga, we are currently holding at OMC_WHITENING to allow violins to damp
• Acquired NLN/OBSERVING @ 14:52

- Leaving H1 to Ryan S. locked, EQ is incoming hopefully we can ride it out

LOG:

No log for this shift.

LOCKLOSS @ 13:28, unknown cause, but this one looked like quite a fast lockloss, possibly indicating some LSC loop oscillations.

H1 has been locked and in observing for just under 3 hours. We had 5.3 EQ from Vanuatu roll through, but thankfully we were able to ride it out and hold lock.

Recently, it has been known that we are more sensitive to ground motion, particularly earthquakes. I have attached a long term trend, around 6 months, the second row being the EQ band, and the bottom row being microseism. It is clear that in the past few months, there has been more average motion in the EQ band (by a crude eye test ~20-30%, looking at the peaks) starting in the spring. As for microseism, it seems motion actually has dropped on average, peaking some time in late February, early March. TJ has also posted a trend of long term wind speeds in MM, which I have attached to this alog as well.

LOCKLOSS @ 13:23, not seeing any evidence of an ASC ringup, some LSC oscillations.

It appears as if the annulus ion pump is back, and there appears to be no human intervention.  We'll keep an eye on it.  This is the aLOG about the failure.

TITLE: 06/18 Owl Shift: 07:00-15:00 UTC (00:00-08:00 PST), all times posted in UTC
STATE of H1: Observing at 136Mpc
CURRENT ENVIRONMENT:
    SEI_ENV state: CALM
    Wind: 13mph Gusts, 9mph 5min avg
    Primary useism: 0.02 μm/s
    Secondary useism: 0.10 μm/s
QUICK SUMMARY:

- Arrived with H1 observing as of 4:52 UTC

- Had a rough couple days of EQs and high wind, will monitor as the night goes on

- DM/CDS ok

TITLE: 06/17 Eve Shift: 23:00-07:00 UTC (16:00-00:00 PST), all times posted in UTC
STATE of H1: Lock Acquisition
SHIFT SUMMARY:

The Earth continues it's mode of rumbling (contrast this to other weeks where there were days with no EQs!).  Two EQs took H1 down (one from OBSERVING, and one while locking).  Other than that, no issues to note as far as locking.  Ending shift out with a lock which is over 2hrs which seems to be the norm for the last 2hrs, but we'll see how the earth & H1 treat Austin!  

LOCK#1:  (2308-0007)

• Xarm needed INC_FLASH
• Needed to adjust DIFFOFFSET to help FIND_IR
• DRMI video showed yaw misalignment...I ended up touching up flashes by moving BS, PRM, SRM slightly, and that helped, but then I went to PRMI, touched up by hand via the BS (w/ yaw), and let GRD take over.
• 0007:  LOCKLOSS due to EQ (5.4-5.6 Fiji @2316...USGS was slow to post, but other sites posted pretty fast)--L1 remained locked.
  • SEI_ENV did not get SEISMON alert, but "Peakmon high (603)", so it transitioned to EARTHQUAKE at 0008

LOCK#2: (0008-0148)

• Violins were a bit high (over 1.2 million ADC counts...of the 0.5 million avail counts) on this one, so the OMC WHITENING step took a while (~44min).
• 0350 LOCKLOSS due to N. Calif EQ

LOCK#3: (0352-0452) No intervention.

LOG:

• 2306 LOCKLOSS (1371078384.116699 ....said windy, but it wasn't too bad)
• 0007 LOCKLOSS due to EQ (5.5M @Fiji) while relocking
• 0000 Winds take a step up & start to slightly pop above 30mph (mainly EY).
• 0149 OBSERVING
• 0350 LOCKLOSS due to EQ (most likely a quick 4.4M EQ from northern Calif, which was seen as a 5min burst on the Picket Fence.
• 0452 OBSERVING

Short observing stretch ended at beginning of the shift, and during the next lock attempt H1 was hit by a Fiji EQ.  EQ was preceded by a step up with winds at EY at about 00:00utc/5pm, but they have only peaked over 40mph for a moment.  Have been OBSERVING for 75min.

TITLE: 06/17 Eve Shift: 23:00-07:00 UTC (16:00-00:00 PST), all times posted in UTC
STATE of H1: Observing at 0Mpc
CURRENT ENVIRONMENT:
    SEI_ENV state: CALM
    Wind: 15mph Gusts, 11mph 5min avg
    Primary useism: 0.03 μm/s
    Secondary useism: 0.10 μm/s
QUICK SUMMARY:

Walked in to an OBSERVING H1, only to have it lose lock 6-min into my shift--definitely not Ryan's! :) 

(no obvious environmental reasons for the lockloss).  H1 currently has green X-arm at INCREASE FLASHES.

TITLE: 06/17 Day Shift: 15:00-23:00 UTC (08:00-16:00 PST), all times posted in UTC
STATE of H1: Observing at 135Mpc
SHIFT SUMMARY: One large earthquake kept H1 down for part of the day; ran initial alignment and recovered easily. H1 has now been locked and Observing for an hour.

Lock #1:

• Lockloss @ 16:38, cause unclear: alog

Lock #2:

• Relock went quickly and unaided
• NLN @ 17:32 and Observing @ 17:36 (camera servos came on very quickly; had to wait only for violin damping guardian)
• Lockloss @ 19:19, magnitude 5.7 quake from Samoa: alog

Lock #3:

• Lost lock at DHARD_WFS while relocking unaided
• ITMX camera signals were close enough converged to lock ALS, but too far for DHARD WFS to fix
• Starting initial alignment

Lock #4:

• Locking went smoothly and unaided following initial alignment
• NLN @ 21:59 and Observing @ 22:10

Handing off to Corey for the evening.

LOG:

No log for this shift.

The PEM_MAG_INJ guardian now should automatically power on the Pulizzi AC power control units that power the amplifiers for the injection coils before the injection suite is run. Specifically, the units are turned on at the end of the TAKE_BACKGROUND state after the background duration is finished. The units are then all turned off once the suite finishes and the guardian returns to DOWN. I have purposefully NOT committed these changes to svn until I can run through the injection suite and test this new functionality (i.e. while down for earthquakes or during Tuesday maintenance).

There are still two Pulizzi units that need to be installed: those for the coils in both end station VEAs. Those amps are currently plugged directly into the wall and are therefore on constantly. Once the remaining Pulizzis are installed, I'll add control of them to the guardian.

Lockloss @ 19:19 UTC - 1:46 into lock stretch. 5.7 magnitude quake from Samoa (same region as many quakes the past few days). SEI_ENV did not move to EARTHQUAKE until two minutes after ground motion picked up and the lockloss.

Sat Jun 17 10:06:48 2023 INFO: Fill completed in 6min 47secs

WP11255

root@h1daqframes-0:~# zpool status
  pool: frames-0
 state: ONLINE
  scan: scrub repaired 0B in 3 days 22:39:13 with 0 errors on Sat Jun 17 06:48:55 2023