Sheila, Camilla

In 81760 we saw that SQZ was adding noise 20-40Hz. I repeated today FDS and no sqz and don't see the same added noise, only a very small amount around 20Hz. See attached (4 minute 0.1Hz average). We're not sure what would be changing. It's possible that the range correlates with FC beamspot, see attached plot. This morning Sheila showed that the ~5MPc drift in the range during the last locks is mainly around 20-40Hz dtt.

I re-enabled FC beamspot control plot as in 80970, edited sqzparams, reloaded  SQZ_FC and accepting sdfs. We have not checked the offsets.

Sheila, Brice

Brice asked for some injections to check for bicoherence, and to check the bicoherence code that his group is working on.

At 17:49 UTC we injected into LSC-DARM2 at 3e-2 counts at 23Hz and 25 Hz, and 1e-2 at 48 Hz.  (red 4 +5)

At 18:00:30-18:04 UTC we injected into LSC-MICH1 at 25 Hz at 3e-3 counts, LSC-SRCL1 at 23 Hz at 3e-3, and LSC DARM2 at 48 Hz amplitude 1e-2. (ref 6-8)

At 18:10 UTC we injected into LSC-SRCL at 23 Hz at 3e-3, and ASC-DHARD_P at 25 Hz, and LSC-DARM2 at 48 Hz at 1e-2. 

Template is saved at /sheila.dwyer/Noise/line_injections/line_injections_dec16_2024.xml

FAMIS 31064

The PMC mode-matching check done in the enclosure last Tuesday is clearly seen on many trends.

PMC REFL is still steadily increasing along with a steadily decreasing RefCav TPD and ISS diffracted power percentage. It's possible this is due to alignment drifting into the PMC, so if time allows during maintenance tomorrow, I'll try an alignment adjustment along with the already planned FSS path tuneup.

TITLE: 12/16 Day Shift: 1530-0030 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Observing at 156Mpc
OUTGOING OPERATOR: Oli
CURRENT ENVIRONMENT:
    SEI_ENV state: CALM
    Wind: 11mph Gusts, 7mph 3min avg
    Primary useism: 0.03 μm/s
    Secondary useism: 0.31 μm/s
QUICK SUMMARY:

H1's been locked 9.25+hrs and microseism is just touching up on the 95th percentile.  Rainy drive on the way in.

TITLE: 12/16 Eve Shift: 0030-0600 UTC (1630-2200 PST), all times posted in UTC
STATE of H1: Lock Acquisition
INCOMING OPERATOR: Oli
SHIFT SUMMARY:

IFO is LOCKING at MOVE_SPOTS

Very quiet shift with one Lockloss (alog 81838). DRMI was able to lock 20 minutes post LL, which is great recovery time! (and this includes having to go through PRMI and touching PRM/BS).

Conditions are relatively quiet with very low wind and seismic motion. The microseism has leveled off but seems like it may be turning around and increasing again.

Other than that, there is a quiet whistling/alarm-like sound coming from the MSR. However, I don't know if it was always there and I only realized now or if something is up. I went in briefly to see if something was immediately wrong (red lights or anything) but couldn't find anything of concern. I went to the source of the sound, pictures below from front and back. Since we were quietly observing, guardian had no messages, nothing apparent upon investigation in the MSR and there were no alerts in the control room, I elected not to call CDS but did tag them here and messaged Dave regarding the problem. Investigating further, there was one alog from 2017 that mentioned that there is a sounding alarm in the MSR which only told me that such a thing was possible. In that alog, it was due to the temperature, but checking the thermostats in the room, they seemed (and felt) to be workng.

LOG:

None

CHARD Y signal was oscillating above the other channels on NUC29 (ASC) pre-lockloss.

Lockloss tool shows the ETM Glitch channel did see a non-saturating glitch ~12ms before the Lockloss, so it may be that though I don't know if 10ms is enough time to confirm this as the cause.

TITLE: 12/15 Day Shift: 1530-0030 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Observing at 158Mpc
INCOMING OPERATOR: Ibrahim
SHIFT SUMMARY:

Microseism continues to plummet.  

Robert has been running electric ground measurements at various points in the Corner Station--NOT in LVEA (i.e. Mechanical Room's Squeezer racks and Vacuum racks on & under the Mezzanine).

Only one lockloss during the shift with a 52-min relock (noted below).  Range is currently a bit higher with even a 168Mpc data point.
LOG:

• 2109 LOCKLOSS (after a 11hr41min lock)
  • ALSx was off in YAW (intervened via TMSx yaw)
  • Check_Mich_Fringes run, then PRMI....with PRM yaw tweak to lock it up, DRMI locked up within ~2min.
  • 2158 M5 Incoming EQ from Japan.
  • 2205 OBSERVING

TITLE: 12/16 Eve Shift: 0030-0600 UTC (1630-2200 PST), all times posted in UTC
STATE of H1: Observing at 159Mpc
OUTGOING OPERATOR: Corey
CURRENT ENVIRONMENT:
    SEI_ENV state: CALM
    Wind: 9mph Gusts, 7mph 3min avg
    Primary useism: 0.02 μm/s
    Secondary useism: 0.26 μm/s
QUICK SUMMARY:

IFO is in NLN and OBSERVING as of 22:03 UTC.

Conditions are good. Wind is low, microseism is low.

While checking FOMs noticed the SYSTEMATIC_ERROR ndscope on nuc24's "Calibration Screen" was dead/showing no data---clicked the START for the window to get this back.

Sun Dec 15 10:16:47 2024 INFO: Fill completed in 16min 44secs

TITLE: 12/15 Day Shift: 1530-0030 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Observing at 157Mpc
OUTGOING OPERATOR: Oli
CURRENT ENVIRONMENT:
    SEI_ENV state: SEISMON_ALERT
    Wind: 11mph Gusts, 7mph 3min avg
    Primary useism: 0.04 μm/s
    Secondary useism: 0.30 μm/s
QUICK SUMMARY:

µseism is clearly below the 95th percentile in the last 4hrs! (look at secondary useism above well below 1μm/s!  Woo Woo!  (and winds of yesterday have actually calmed in the last hour).

H1 has been locked almost 6.5hrs---> Where in the middle of the night a M5.2 earthquake caused a lockloss at 724utc (or 1124pmPT)....Seismon/Verbal said it was Canada, but it was a NorCal/Petrolia aftershock--there was nothing from Canada on all the earthquake sites.  This lockloss did require an automated Initial Alignment, but after that locking was smooth with no locklosses (thanks to lower microseism!).

I was dealing with issue 271. From elenna's alog and summary pages of these days, from Sep 05 to doday, we can see that these 20 Hz blue short lines mean disappearing of noise in this frequency. From this website, I have checked many devices, where lots of same blue short lines appeared, which means that the noise in these devices have a strong coherence. From this page, we can see history of these devices, I found that this blue short line occured on half of the days of each month in September and October. But on Nov 1 and Nov 2, it became 15 Hz blue dashed line, rather than 20 Hz blue short line. But since then, this blue short line phenomenon has not appeared again. As for the souce, I guess it was the air conditioner turning on and off or other equipment that causes the blue short lines. Nowadays nothing similar is occurring.

TITLE: 12/15 Eve Shift: 0030-0600 UTC (1630-2200 PST), all times posted in UTC
STATE of H1: Observing at 156Mpc
INCOMING OPERATOR: Oli
SHIFT SUMMARY:

IFO is in NLN and OBSERVING as of 01:20 UTC (4 hr 45 min lock)

Beginning of shift was rough with winds over 40 mph and microseism over the 0.9 line (very high). However, after achieving NLN and going into OBSERVING, the wind has steadily gone down to below 10 mph and the microseism has gone down below the 0.9 line (first time in 2 days). Conditions are good!

LOG:

TITLE: 12/14 Day Shift: 1530-0030 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Microseism
INCOMING OPERATOR: Ibrahim
SHIFT SUMMARY:

Microseism took a slight drop from its peak last night, but it still clearly above the 95th percentile (and just under 1µm/s) which continues to cause locking grief for H1 (but H1 managed surprisingly well with relocking earlier in the shift.  Once themalized (and after a Saturday tour left the Control Room, performed the Saturday Calibration).

Also of note is our winds have been picking up for the first time in days; winds picked up around 1800utc (around when H1 relocked!), and then we had lockloss which was tied to our biggest gusts (over 40mph) + our above-95th-percentile
LOG:

• 1542-1544 h1 dropped from OBSERVING due to Calibration SDF change for CW gain going to 0 (was revered to 1)
• 1603 LOCKLOSS
  • 1644 Initial Alignment started  (since their were multiple locklosses at CHECK MICH FRINGES)
    • ALSx had Crystal Freq issues which caused green arm part of initial alignment to take 15min.
  • Handful of DRMI locklosses and then eventually locked with a shaky start and then all the way to NLN with no issues.
• 1821 OBSERVING
• 2nd Saturday Tours in Control Room 
  • 1941-1954 (1141-1154am) Janos & Austin (~15visitors)
  • 2014-2035 (1215pm) Francisco (~22visitors)
  • 2145-2210 (145-210pm)Fred (~23 visitors)
• 2211 Saturday Calibration was run
• 2234 Pcal measurements (francisco)
• 2314 LOCKLOSS
  • Have run an alignment, but this was during the wind storm 
  • Handing over to Ibrahim as we the winds have just started to come down.

TITLE: 12/15 Eve Shift: 0030-0600 UTC (1630-2200 PST), all times posted in UTC
STATE of H1: Wind
OUTGOING OPERATOR: Corey
CURRENT ENVIRONMENT:
    SEI_ENV state: USEISM
    Wind: 32mph Gusts, 26mph 3min avg
    Primary useism: 0.05 μm/s
    Secondary useism: 0.62 μm/s
QUICK SUMMARY:

IFO is in ENVIRONMENT and LOCKING.

Getting hit by high microseism mixed with 40 mph gusts of wind is making locking difficult. We just ran initial alignment and are having some issues locking DRMI but wind seems to be coming down as does microseism.

H1 will be thermalized right around the Sat Calibration time of 2120utc (120pm PDT).

Measurement NOTES:

• Following instructions (link).....EXCEPT:  Again for simulines measurement, run this file per Louis D.'s request:
  • " gpstime;python /ligo/groups/cal/src/simulines/simulines/simuLines.py -i /ligo/groups/cal/H1/simulines_settings/newDARM_20231221/settings_h1_20241005_lowerPcal_higherPUM.ini;gpstime "
  • NOTE:  I messaged Louis to see whether we use this new mesaurement (or the old one which is in the wiki), and he confirmed that YES, we should be running this new measurement.
• H1 at NLN for for over ~3hrs
• Calibration_Monitor medm screenshot is attached
•  2211- Out of Observing for CALIBRATION
•  Broadband measurement run 1418249504 -1418249823
  • Measurement at:  /ligo/groups/cal/H1/measurements/PCALY2DARM_BB/
•  Simullines measurement
  • Before starting this measurement, Commissioners took H1 to No SQUEEZING, and then we started simulines
  • gps START time:   1418249908.126581
  • gps STOP time:  1418251334.724000
  •  File written out to: /ligo/groups/cal/H1/measurements/DARMOLG_SS/DARMOLG_SS_20241214T221812Z.hdf5
  • File written out to: /ligo/groups/cal/H1/measurements/PCALY2DARM_SS/PCALY2DARM_SS_20241214T221812Z.hdf5
  • File written out to: /ligo/groups/cal/H1/measurements/SUSETMX_L1_SS/SUSETMX_L1_SS_20241214T221812Z.hdf5
  • File written out to: /ligo/groups/cal/H1/measurements/SUSETMX_L2_SS/SUSETMX_L2_SS_20241214T221812Z.hdf5
  • File written out to: /ligo/groups/cal/H1/measurements/SUSETMX_L3_SS/SUSETMX_L3_SS_20241214T221812Z.hdf5
• Then ISC_LOCK was taken back to NLN for observing

Sat Dec 14 10:13:35 2024 INFO: Fill completed in 13min 32secs