Tue Dec 24 10:07:59 2024 INFO: Fill completed in 7min 55secs
TCmins [-108C, -47C] OAT [+6C, 47F]
TITLE: 12/24 Day Shift: 1530-0030 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Microseism
OUTGOING OPERATOR: TJ
CURRENT ENVIRONMENT:
SEI_ENV state: USEISM
Wind: 5mph Gusts, 3mph 3min avg
Primary useism: 0.11 μm/s
Secondary useism: 0.87 μm/s
QUICK SUMMARY:
OWL Op took ISC_LOCK to idle.
Since we aren't locked when I arrived here at 7:30, No In-Lock SUS Charge measurments would be running.
Lets check that long Tuesday Maintenance List!..... Empty.... I guess no need to check that twice.
The Primary uSeism looks to be falling, perhaps the secondary wll follow, So i've started an Initial_Alignment and I'll give locking a shot now that the wind is gone and the useism is a little lower.
I do expect to see the Liquid Nitrogen tanks to be filled at some point in the morning.
16:37 UTC Norco arrived.
17:00 Test T538484 announced on Verbals
EXTERIG: SNEWS alert active
18:33 UTC Norco truck starts leaving & Locking started.
Since it looks like we have been able to lock with this level of useism earlier today, but without the wind that is still hanging around, I've just reset the timers by bringing IFO_NOTIFY and H1_MANAGER to idle and back with the hopes that the wind will die down soon. I'll update in a few hours.
I'm going to keep the IFO in IDLE until the day shift. This useism and light wind are just too much and not forcasted to go down until the morning. We've made it past carm reduction a few times, but that's as far as it has gone. I don't want to ring up the violin modes anymore with these repeated lock losses.
TITLE: 12/24 Eve Shift: 0030-0600 UTC (1630-2200 PST), all times posted in UTC
STATE of H1: Microseism
INCOMING OPERATOR: TJ
SHIFT SUMMARY:
For locks of 1st half of the shift, DRMI had been easy to lock (from RyanC's earlier IA); one can see low frequency (7-9 sec period pretty obvious on ndscopes) oscillations on multiple ASC/LSC signals at ISC states from DRMI to MAX POWER (so far).
I ended up running an Initial Alignment toward the end of the shift, and if anything, locking seems to have gotten worse (more frequent locklosses and only a one lock getting much past DRMI).
And of course, we now have winds beginning to get worse as well.
Wondering if a survey of the SEI hardware (namely, cables or other things contacting the blue crossbeams) would be useful for looking for any possible seismic shorts from the ground bypassing the HEPI system.
LOG:
I've updated cds_report.py to expect these workstations to be off.
H1 continues to struggle with high microseism. Alignment, for the most part, continues to look decent with flashes looking fine for DRMI (and PRMI when ISC LOCK took H1 there). But have only made it as far as MOVE SPOTS in the last 2.5hrs (Engage ASC takes a while and this is where we have lost lock quite a few times.). And for various states, one can clearly see lo frequency oscillations (~7-9 second period....see attached at ENGAGE_ASC_FOR_FULL_IFO).
TITLE: 12/24 Day Shift: 1530-0030 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Microseism, Lock Aquisition
INCOMING OPERATOR: Corey
SHIFT SUMMARY:
LOG: Locking DRMI/PRMI was a big struggle today due to the elevated ground motion, it felt like the alignment was constantly running away. The picket fence seismometers are seeing so much ground motion from the ocean waves/tidal that they occasionally turn yellow as if there's an EQ for a few seconds. Primary microseism continues to rise even at the end of the shift.
| Start Time | System | Name | Location | Lazer_Haz | Task | Time End |
|---|---|---|---|---|---|---|
| 22:08 | OPS | LVEA | LVEA | N | LASER SAFE | 15:07 |
| 16:02 | FAC | Kim | Labs | N | Tech clean | 16:24 |
| 17:21 | FAC | Kim | Receiving | N | Garb and trash | 18:00 |
| 18:00 | FAC | Kim | MidX | N | Tech clean | 18:29 |
| 18:29 | FAC | Kim | MidY | N | Tech clean | 19:17 |
| 19:12 | FAC | Tyler | X-Arm | N | Ensuring clear path for N2 fill tomorrow. | 19:42 |
| 22:31 | CAL | Dripta | PCAL lab | LOCAL | PCAL work | 23:20 |
| 22:54 | CAL | Tony | PCAL lab | LOCAl | PCAL work, beam centering | 23:20 |
| 22:56 | VAC | Gerardo | Wood shop | N | Drive stuff over | 23:16 |
The TEST node was stuck on a channel timeout and its exc time was stuck increasing so I restarted the node, but on restart it couldn't connect to H1:GRD-ISC_LOCK_OP. Last time this happened I was able to fix it by stopping and re EXC the node but that didn't work this time.
TITLE: 12/24 Eve Shift: 0030-0600 UTC (1630-2200 PST), all times posted in UTC
STATE of H1: Microseism
OUTGOING OPERATOR: Ryan C
CURRENT ENVIRONMENT:
SEI_ENV state: USEISM
Wind: 12mph Gusts, 6mph 3min avg
Primary useism: 0.21 μm/s
Secondary useism: 0.77 μm/s
QUICK SUMMARY:
Saw RyanC get H1 to ENGAGE ASC, but then there was another lockloss. µseism is high for primary & secondary (leaving Observatory Mode in the MICROSEISM state). Winds are not bad and it is foggy out.
Famis 28384 in Lock Sus Charge Measurement for Last week's Tuesday Sus Charges.
We only lasted 14 minutes, https://ldas-jobs.ligo-wa.caltech.edu/~lockloss/index.cgi?event=1419013481
Primary microseism is rising very quickly today. Most of the recent locklosses have seen ETMY being the first saturating suspension rather than the typical ETMX.
I don't think I see anything on the PI plot, but this is the first time I've really looked at one of these plots.
Mon Dec 23 10:07:32 2024 INFO: Fill completed in 7min 29secs
Gerardo confirmed a good fill curbside. TCmins [-97C,-41C] OAT [3C,37F]
TITLE: 12/23 Day Shift: 1530-0030 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Lock Acquisition
OUTGOING OPERATOR: Oli
CURRENT ENVIRONMENT:
SEI_ENV state: USEISM
Wind: 6mph Gusts, 4mph 3min avg
Primary useism: 0.18 μm/s
Secondary useism: 0.80 μm/s
QUICK SUMMARY:
18:13 UTC Observing
Alerted by H1 manager that there was an issue - relocking had just taken a while and then we just had to wait in OMC_WHITENING for a long time because the violins were pretty rung up. We got into Observing fine eventually.
TITLE: 12/23 Eve Shift: 0030-0600 UTC (1630-2200 PST), all times posted in UTC
STATE of H1: Observing at 156Mpc
INCOMING OPERATOR: Oli
SHIFT SUMMARY: Quiet shift with H1 locked and observing throughout. Microseism has remained high but wind is still fortunately low. Current lock stretch up to 5.5 hours.
FAMIS 31065
On-table FSS work last Tuesday (alog81865) is clearly seen on several trends. Since then, PMC REFL looks to be a bit noisier. I also bumped up the ISS diffracted power 2 days ago to get back to the 4% we like to have it these days.
TITLE: 12/22 Day Shift: 1530-0030 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Observing at 154 Mpc
INCOMING OPERATOR: Ryan S
SHIFT SUMMARY: 2ndary microseism increased a little more throughout the day, 2 locklosses and relocks. We've been locked for a little over 2 hours.
LOG: No log.
TITLE: 12/23 Eve Shift: 0030-0600 UTC (1630-2200 PST), all times posted in UTC
STATE of H1: Lock Acquisition
OUTGOING OPERATOR: Ryan C
CURRENT ENVIRONMENT:
SEI_ENV state: USEISM
Wind: 5mph Gusts, 2mph 3min avg
Primary useism: 0.10 μm/s
Secondary useism: 0.96 μm/s
QUICK SUMMARY: H1 currently relocking and up to PREP_DC_READOUT.
