TITLE: 12/12 Eve Shift: 00:00-08:00 UTC (16:00-00:00 PST), all times posted in UTC
STATE of H1: Observing at 157Mpc
OUTGOING OPERATOR: Ryan C
CURRENT ENVIRONMENT:
    SEI_ENV state: CALM
    Wind: 10mph Gusts, 8mph 5min avg
    Primary useism: 0.03 μm/s
    Secondary useism: 0.30 μm/s
QUICK SUMMARY:

In Observing and Locked for 16 hours. useism is starting to head back up.

TITLE: 12/11 Day Shift: 16:00-00:00 UTC (08:00-16:00 PST), all times posted in UTC
STATE of H1: Observing at 156Mpc
INCOMING OPERATOR: Oli
SHIFT SUMMARY: Not much

Dave restarted the MC3 camera server and brought back said camera, that has been blue over the weekend at 17:04UTC.

LOG:                                            

I've taken the SUS_CHARGE node to DOWN so that the automatic in-lock charge measurements don't run before tomorrow morning's Tuesday maintenance time (and I can confirm that doing this does not take H1 out of observing). To re-enable the automated in-lock charge measurements, the SUS_CHARGE node should be requested to INJECTIONS_COMPLETE before next Tuesday.

This is a big-picture overview of combs in recent months.

Data and methods

"Relative priority" is a new metric documented in G2302324 (Athena Baches, Abby Wang, and Nick Baker). It is not finalized-- in fact these values differ slightly from the version in the linked presentation due to bug fixes-- and should be understood as (a) having arbitrary units, (b) reflecting the general importance of spectra artifacts to CW searches, and (b) being useful only for comparing artifacts in similar data sets-- for example, it should not be used to compare artifacts from monthly spectra and ones from weekly spectra. In this case it is used to compare and rank combs across monthly spectra.

Monthly August, October, and November Fscan spectra and their auto-generated lines lists were used. I skipped September because I still need to troubleshoot some issues with the lines list for that month.

Main messages

• The 9.47-8 Hz combs are still the worst offenders, even considered individually.
• The near-1Hz and near-5Hz combs, likely due to HWS, are quite problematic.
  • A useful comparison point is the recently-mitigated 1.66 Hz comb. Considered together, the HWS combs are likely worse for CW searches (much worse if you just look at October as a reference point, but in that case the comparison comb was only intermittently present due to ongoing testing.)
• The good news: we have been making progress on a good fraction of the highest-priority combs.

Details

Key

Color-coding and letter labels convey identical information.

August

October

November

FAMIS 20006

Between roughly 6 and 4 days ago, the regular temperature spikes seen in the control boxes, diode room, and chiller room readbacks stopped, meaning the temperatures there were more stable for that time. This does not seem to have had an effect on laser perfomance that I can see. I have yet to find a cause of this; maybe a fan in the chiller/diode room area was changed? Whatever changed, it was undone ~4 days ago and the behavior of these temperature channels has returned to normal.

The PMC temp output jumped up by about 0.3 about 3 days ago; unsure yet as to why.

Mon Dec 11 10:04:58 2023 INFO: Fill completed in 4min 55secs

Travis confirmed a good fill curbside.

Full Week DQ report is written here: DQ12/4-12/10

Summary (highlights) of findings during the DQ Shift:

• The duty cycle of this week: 71.7%, with the least cycle recorded on Tuesday (57.7%) and the highest on Sunday (87.7%)
• Most of the reasons for lock loss are earthquakes (this week has lots of earthquakes), clipping, and some fixing parts or alignment
• Some noise bursts on low frequency (20-40 Hz) also often happened at Corner Station (BSC) and acoustic noises mostly at HAM2
• Hveto: Mostly every day has new winners. But two channels appeared 2 times this week. Thursday 12/7 recorded as the most winners (13). Hveto has no results from 12/08-12/10 and has also already been reported on Mattermost.
  • H1:LSC-POP_A_LF_OUT_DQ (Wednesday 12/6, Thursday 12/7)
  • H1:PEM-EX_MAG_EBAY_SEIRACK_X_DQ (Monday 12/04, Thursday 12/7)
• PyCBC
  • Liveshort: Every day has a new SNR >10, of which the largest is 13.27 on Wednesday 12/06
  • Livemedium: Two times (Monday, Wednesday), of which the largest is 11.13 on Monday 12/04
  • Livelong: Now new SNR >10, but some of them >9
• FScans :
  • Since the result was only generated until 12/08. For now, it will be reported until this day but will be updated for the next few days if there are any updates.
  • The line counts keep rising day by day, which is the largest on 12/06 (504) and the largest in this month (until now)
  • From 12/04-12/07 a lot of combs appeared from 0-150 Hz (also mentioned on alog), but 12/08 seems started to decrease

Notes:

• Hveto 12/08-12/10 Still cannot fully generate
• FScan 12/09-12/10 Still cannot fully generate
• All will be updated later if it is fixed

Thank you for the opportunity as the shifter

The MC3 camera image has been down since 12:10 Fri 08dec2023 PST. There was nothing wrong with the camera, it just needed a restart of the h1cam12 server process on h1digivideo1. I killed the process and let monit restart a new one.

TITLE: 12/11 Day Shift: 16:00-00:00 UTC (08:00-16:00 PST), all times posted in UTC
STATE of H1: Observing at 156Mpc
OUTGOING OPERATOR: Austin
CURRENT ENVIRONMENT:
    SEI_ENV state: CALM
    Wind: 11mph Gusts, 9mph 5min avg
    Primary useism: 0.04 μm/s
    Secondary useism: 0.22 μm/s
QUICK SUMMARY:

• We've been locked for 8:00, in observing since 07:59UTC
• Microseism still trending down
• All systems look good, violins are nice and low

TITLE: 12/11 Eve Shift: 00:00-08:00 UTC (16:00-00:00 PST), all times posted in UTC
STATE of H1: Lock Acquisition
INCOMING OPERATOR: Austin
SHIFT SUMMARY: Just got back into Observing at 07:59UTC after relocking. Two locklosses during my shift, but both were quick to recover from. SEI_CONF is back to WINDY since USEISM is down.
LOG:

00:00UTC Detector Observing and Locked for 17.5 hours

00:47 Lockloss (74725)

-- Relocking --
00:58 Manually aligned green arms, and then started an Initial Alignment
01:21 Initial Alignment completed, relocking
    - Watched ISC_LOCK log, ADS, and saturation overview screen closely between LOWNOISE_COIL_DRIVERS and LOWNOISE_LENGTH_CONTROL in case we lost lock during TRANSITION_FROM_ETMX, but we were fine
02:00 NOMINAL_LOW_NOISE
-- Relocking End --

02:06 Observing

04:10 Changed SEI_CONF to WINDY due to lowering useism
    - Went into the SEI_ENV code beforehand and swapped the SEI_CONF nominal states back to WINDY and EARTH_QUAKE from USEISM and USEISM_EARTHQUAKE(see 74727).

00:47 Lockloss (74728)

-- Relocking --
07:18 Earthquake mode activated due to incoming earthquake from Tonga
07:28 Back to CALM

07:55 NOMINAL_LOW_NOISE
-- Relocking End --

07:59 Observing

Lockloss 12/11 @ 06:46UTC due to sudden nearby ground motion

Observing at 160Mpc and have been Locked for 2 hours. Relocking after the lockloss (74725) went quickly, and ITMY5/6 are still damping well with Ryan C's new gain settings(74721)!

04:10UTC Secondary microseism is now consistantly below 0.8 um/s(ndscope), so I just went into the SEI_ENV code and swapped the SEI_CONF nominal states back to WINDY and EARTH_QUAKE from USEISM and USEISM_EARTHQUAKE(screenshot of change). I then changed SEI_CONF to WINDY.

Lockloss 12/11 00:47UTC for unknown reasons. EX saturation right before lockloss, and the light on the MC_REFL camera got much brighter than I had ever noticed before.

TITLE: 12/11 Eve Shift: 00:00-08:00 UTC (16:00-00:00 PST), all times posted in UTC
STATE of H1: Observing at 159Mpc
OUTGOING OPERATOR: Ryan C
CURRENT ENVIRONMENT:
    SEI_ENV state: CALM
    Wind: 5mph Gusts, 4mph 5min avg
    Primary useism: 0.03 μm/s
    Secondary useism: 0.29 μm/s
QUICK SUMMARY:

Detector Locked for 17.5hours and Observing. I'll keep an eye on the new violin settings.

TITLE: 12/10 Day Shift: 16:00-00:00 UTC (08:00-16:00 PST), all times posted in UTC
STATE of H1: Observing at 158Mpc
INCOMING OPERATOR: Oli
SHIFT SUMMARY: Quiet day, locked for 17:30 as of 0:00UTC.

I've finally found some settings that seem to work nicely for ITMY modes5/6, FM6+FM7+FM10 G= +0.02. They're trending down on broad, and narrow monitor filters, and on DTT. Tagging SUS

21:29UTC GRB-Short E458001

LOG:                                                                                                                                                                 

STATE of H1: Observing at 159Mpc

• We've been locked for 13:33
• ITMY 5/6 is finally trending down
• Microseism continues to trend down

I used most of todays commissioning time for shaking and laser vibrometry to inform plans for the break. I replaced the MC3 camera over the viewport I had been using but couldnt get it to work. We will have to revisit it on a Tuesday.

TJ, Ansel, Dave, Camilla

After finding that 1Hz and 5Hz DARM combs were caused by HWS camera sync frequency in 74617, we've turned off all HWS at 21:00UTC so we can check that nothing else from HWS is effecting DARM.

Stopped all HWS code (ETMY was already off 73915). Tuned off all cameras and RCX CLinks. Turned off the ITM SLEDs, ETMX laser will still be on but was tested in 69648 not to effect DARM.

As long as the computers aren't restarted I think that the H1:TCS-E{OPTIC}_HWS_ channels will remain reading their last values, if not Dave might need to "green-up" the CDS overview.