H1 has dropped out of observing as of 16:38 UTC for opportunistic commissioning activities since L1 is down for logging.
FAMIS 19989
No major events of note this week, although the FSS TPD voltage is trending downwards. Not too bad yet, but I'll monitor and see if it needs a realignment soon.
TITLE: 08/14 Day Shift: 15:00-23:00 UTC (08:00-16:00 PST), all times posted in UTC
STATE of H1: Observing at 153Mpc
OUTGOING OPERATOR: Austin
CURRENT ENVIRONMENT:
SEI_ENV state: EARTHQUAKE
Wind: 6mph Gusts, 4mph 5min avg
Primary useism: 0.23 μm/s
Secondary useism: 0.17 μm/s
QUICK SUMMARY: H1 has been locked for 15.5 hours. Currently riding through a 6.2-magnitude earthquake from Guam.
TITLE: 08/14 Eve Shift: 23:00-07:00 UTC (16:00-00:00 PST), all times posted in UTC
STATE of H1: Observing at 150Mpc
INCOMING OPERATOR: Austin
SHIFT SUMMARY: We were able to relock without issue and are 7hrs 38mins into the Lock.
23:00 Detector relocking from earlier lockloss (72181)
23:25 Reached NOMINAL_LOW_NOISE
23:26:30 & 23:26:40 PI 31 notification on Verbals - damped quickly by Guardian
23:33 Into Observing
23:39 RO WS Major Alarm - contacted Richard
LOG:
no log
We've now had two locklosses since Elenna updated the LSC FF filter ramp times (72163) on 8/11 in the hopes of getting rid of the 102Hz peak (72064) that appeared on 8/4 or 8/5, so I checked out the NOLINES plot on the summary pages to see if it had changed anything.
Relocking from both of the locklosses on 8/12 and 8/13, we can still see the line at 102Hz is still there (attachment1), and I plotted some times(attachment2) to more directly see if the change in ramp time had affected the peak at all, but it looks like it didn't.
Got back into NOMINAL_LOW_NOISE at 23:25UTC from the lockloss that occurred during Ryan S's shift, and entered Observing at 23:33UTC.
We've currently been Locked for almost 4 hours.
TITLE: 08/13 Eve Shift: 23:00-07:00 UTC (16:00-00:00 PST), all times posted in UTC
STATE of H1: Lock Acquisition
OUTGOING OPERATOR: Ryan S
CURRENT ENVIRONMENT:
SEI_ENV state: CALM
Wind: 13mph Gusts, 10mph 5min avg
Primary useism: 0.03 μm/s
Secondary useism: 0.18 μm/s
QUICK SUMMARY:
Taking over from Ryan S. Detector is in the last stages of relocking, at MAX_POWER.
TITLE: 08/13 Day Shift: 15:00-23:00 UTC (08:00-16:00 PST), all times posted in UTC
STATE of H1: Lock Acquisition
INCOMING OPERATOR: Oli
SHIFT SUMMARY: Very quiet shift until near the end when H1 lost lock after 38.5 hours.
Handing off to Oli with H1 relocking automatically, currently up to MOVE_SPOTS.
LOG:
No log for this shift.
Lockloss @ 22:16 UTC - cause currently unknown, but several LSC and ASC loops showed something happening starting about 6 seconds before the lockloss.
Possibly some very sudden ground motion? I noticed the LSC CPSFF spiked at the lockloss, but I don't have an explanation for where it could have come from.
The LSC-CPSFF_INMON channel has also been having these little hiccups every couple of minutes since the lockloss.
The CPSFF hiccups are also seen in the ALS flashes, mostly ALS Y, so the ISI is certainly moving. The movement seen by the LSC CPSFF starts at the same time as the movement seen by the LSC and ASC signals.
As I write, the hiccups appear to have stopped.
Back Observing as of 23:33UTC
State of H1: Observing at 153Mpc
H1 has been locked for 35 hours. Very quiet morning.
Sun Aug 13 10:15:26 2023 INFO: Fill completed in 15min 22secs
TITLE: 08/13 Day Shift: 15:00-23:00 UTC (08:00-16:00 PST), all times posted in UTC
STATE of H1: Observing at 149Mpc
OUTGOING OPERATOR: Austin
CURRENT ENVIRONMENT:
SEI_ENV state: CALM
Wind: 12mph Gusts, 8mph 5min avg
Primary useism: 0.03 μm/s
Secondary useism: 0.12 μm/s
QUICK SUMMARY: H1 has been locked for 31 hours. Dropped out of observing twice at 09:09 and 09:22 from the TCS CO2 X laser losing lock. On both occasions observing resumed automatically within 2 minutes. (Tagging TCS)
TITLE: 08/13 Eve Shift: 23:00-07:00 UTC (16:00-00:00 PST), all times posted in UTC
STATE of H1: Observing at 144Mpc
INCOMING OPERATOR: Austin
SHIFT SUMMARY:
Overall a quiet and calm night! Going on 23hrs 21mins Locked.
Timeline:
23:00 Detector in Observing and Locked for 15.5 hrs
00:00 Verbal alarm for WAP On in LVEA, EX, and EY, but it isn't actually on (this has happened a few times recently)
4:58 Earthqake mode activated due to earthquake from Papua New Guinea
5:08 Back to CALM
LOG:
no log
We have been Locked for 19hrs 20mins. At 00:00UTC, we did get a notification on Verbals that WAP was on in the LVEA, EX, and EY, which it wasn't, but it's been quiet besides that.
However I did notice that the temperature of Rack 2 in the Y EBay has been rising in temperature over the past day, starting possibly around 8/11 23:19UTC (attachment1), and the current temp reads as almost double the nominal temp. Attachment2 gives a zoomed out timeline, showing that besides the power glitch that resulted in a partial power outage from August 5th (72000) and a period of time 17 days ago(unsure of the cause of that), the rack temperature has not gotten this high in multiple months. Tagging PEM and SYS (not sure if SYS should be tagged).
TITLE: 08/12 Eve Shift: 23:00-07:00 UTC (16:00-00:00 PST), all times posted in UTC
STATE of H1: Observing at 149Mpc
OUTGOING OPERATOR: Ryan S
CURRENT ENVIRONMENT:
SEI_ENV state: CALM
Wind: 17mph Gusts, 12mph 5min avg
Primary useism: 0.03 μm/s
Secondary useism: 0.09 μm/s
QUICK SUMMARY:
Taking over for Ryan S. Detector in Observing and Locked for 15.5hrs.
TITLE: 08/12 Day Shift: 15:00-23:00 UTC (08:00-16:00 PST), all times posted in UTC
STATE of H1: Observing at 152Mpc
INCOMING OPERATOR: Oli
SHIFT SUMMARY: H1 has been locked for 15 hours; quiet the entire shift. Only out of observing a handful of times due to SDF diffs (below).
LOG:
No log for this shift.
Lockloss @ 1:50 UTC, was noticing some instability in the ASC loops on the CR screen, particuarlly for the SRC and HARD loops, though can't say for certain if this caused the lockloss.
