I have found new damping settings for ETMY mode01 and ITMY mode05/06, which are given below,

ETMY01

Nominal - FM1+FM6+FM10, Gain = +0.1 (+30deg phase)

New - FM1+FM8+FM10, Gain = +0.1 (+60deg phase)

ITMY 05/06

Nominal - FM5+FM6+FM7+FM10, Gain = +0.02 (-30deg phase)

New - FM5+FM6+FM8+FM10, Gain = +0.01 (+30deg phase)

I have not made any changes in the lscparam file, will check these new settings for a few lock stretches (also let microseism to settle down) before making them final.

Mon Nov 25 10:03:17 2024 INFO: Fill completed in 3min 15secs

Problematic fill; TCs started with positive temps, very fast fill, TCmins -91C,-89C. Standard plot plus one offset in time (negative TCs).

This morning we tested the SQZ_MANGER states SCAN_SQZ_ALIGNEMNT and SQZ_SQZANG, the AS42_AS_B_RF41_PIT was at -0.15 and the angle changed ~2deg. The range and squeezing didn't noticeably change so we went back to FREQ_DEP_SQZ which turns back on the SQZ ASC AS42 alignment servo and the ADF sqz angle servo as we've nominally been using them.

This morning, Commissioners wanted suite of calibration measurements run.  Broadband measurement was run first with Squeezing, but after this measurment I paused to let them take H1 to No Squeezing (I believe they did this because they didn't want calibration to affect their squeezing work).  Then proceeded with the "non-standard" simulines measurement---where,"non-standard" is measurement is what Louis Dartez has specifically been requesting for H1 (see below).

Measurement NOTES:

• Following instructions (link).....EXCEPT:  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 "
• H1 at NLN for for over ~5.5+hrs
• Calibration_Monitor medm screenshot is attached
• 1636 Out of Observing for commissioning
• 1637 - 1642  Broadband measurement run
  • Measurement at:  /ligo/groups/cal/H1/measurements/PCALY2DARM_BB/
• 1647 - 1711 Simullines measurement
  • Before starting this measurement, Commissioners took H1 to No SQUEEZING, and then we started simulines
  • gps START time:   1416588461.478124
  • gps STOP time:  1416589887.051360
  • Files writtten to subfolders here:  /ligo/groups/cal/H1/measurements
• Let commissioners know when calibration was complete and they brough back squeezing
• Then ISC_LOCK was taken back to NLN for commissioning

Took it to NO_SQUEEZING during calibration measurements. Reset the AS42 no-squeezing offsets, and there are very minimal changes (which is great). Accepted new "no-sqz" offsets in SDF.

TITLE: 11/25 Day Shift: 1530-0030 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Observing at 154Mpc
OUTGOING OPERATOR: TJ
CURRENT ENVIRONMENT:
    SEI_ENV state: CALM
    Wind: 4mph Gusts, 1mph 3min avg
    Primary useism: 0.03 μm/s
    Secondary useism: 0.48 μm/s
QUICK SUMMARY:

H1 had  another 15+hr lock w/ a lockloss overnight (which is most likely due to a M4.6 earthquake 200 miles off the WA coast and NOT IMC or FSS!); TJ needed to assist H1 during his owl shift.  H1 currently at just under 5hrs for current lock. 

Environmentally, a slight increase in µseism to start touching the 95th percentile, otherwise quiet with no wind.  Today it looks like they are pouring concrete at the new Warehouse next to the Staging Building.

Monday morning, but not sure if there is commissioning time on the docket.

SRM M3 had tripped during initial alignment, something that we've seen a few times this week. After untripping it and watching AS AIR in DOWN, I moved it in yaw ~20 urad and then it locked right up.

TITLE: 11/25 Eve Shift: 0030-0600 UTC (1630-2200 PST), all times posted in UTC
STATE of H1: Observing at 153Mpc
INCOMING OPERATOR: TJ
SHIFT SUMMARY:

IFO is in NLN and OBSERVING as of 17:12 UTC 11/24 (~13 hr lock!)

Extremely quiet shift. Intentionally dropped out of OBSERVING twice:

1. To let Vicky tune SQZ while L1 was down. Sadly, this did not seem to improve range. We were COMISSIONING between 04:19 UTC and 04:31 UTC (12 mins)
2. To damp EY Mode 1. Vicky noticed DCPDs were growing and asked if Violins were high. Upon trending (screenshot), it seemed that EY Mode 1 had been increasing for the whole lock. I had to go to DAMP_VIOLINS_SIMPLE, which took us out of OBSERVING between 04:53 UTC and 05:12 UTC (19 mins). Applying the nominal gain of 0.1 did not work, so I played around with the gain, increasing it by a further 0.1 and decreasing by 0.05 both in the negative and positive. While there were some short term successes, overall my attempt did not help, with counts always seeming worse than with nominal guardian damping (which is 0 gain). Not wanting to spend too much time out of OBSERVING, I re-set the gain to 0 and gave guardian the reigns again. They're ever so slowly going down.
   1. My guess is that these violins are being rung up by the increasing secondary microseism, which started noticeably increasing around 8 hours ago. It is about to cross the 0.9 threshold line. The primary microseism is also elevated as of 13 hrs ago.
   2. EY Mode 15 is also elevated, but judging from the 1000(ish) hz lines on DARM and the value on the cts, it is by a negligible amount (still below 10E-17 ASD), so I did not attempt to damp this.
   3. For our recent locks, it seems as though the damping works up to 1-2 hrs into locking but then Mode 1 turns around and starts increasing in counts. I believe some more investigation into this is needed to perhaps find a better angle/gain to damp. (screenshot 2).

LOG:

None

TITLE: 11/24 Day Shift: 1530-0030 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Aligning
INCOMING OPERATOR: Ibrahim
SHIFT SUMMARY:

Brought H1 back to NLN at the beginning of the shift. Then H1 was jostled around by a CP1 Fill (and then spent the rest of the shift returning to a BNS range it had before CP1).  Have been watching L1 to see if they drop out of Observing so we could have Vicky touch up the Squeezer (but they've been locked for ~40hrs).
LOG:

• 1523 Lockloss after 15hr54min; NO imc or fss tags noted for this lockloss.
  • 1551-1612 Initial Alignment
    • Green arms locked up smoothly compared to after locklosses yesterday & rest of alignment went smoothly.
  • Locking:  Green arms locked up much smoother than yesterday also, but sadly DRMI did not lock (even with nice flashes).  PRMI also had nice flashes, but wasn't catching....I couldn't help it, so I I touched BS pitch a couple clicks and then PRMI locked up.  
• 1712 OBSERVING
  • 1803-1812 Range drops about 10Mpc.  SQZ looked fine.  See correlated noise fo 60-450Hz bands on nuc23.
• 1800-1802 CP1 Fill

TITLE: 11/25 Eve Shift: 0030-0600 UTC (1630-2200 PST), all times posted in UTC
STATE of H1: Observing at 157Mpc
OUTGOING OPERATOR: Corey
CURRENT ENVIRONMENT:
    SEI_ENV state: CALM
    Wind: 9mph Gusts, 6mph 3min avg
    Primary useism: 0.02 μm/s
    Secondary useism: 0.32 μm/s
QUICK SUMMARY:

IFO is in NLN and OBSERVING as of 17:10 UTC (~7 hr lock)

If L1 goes down, I was told I can drop out of OBSERVING and tune SQZ, which has been having some issues today.

This morning there was a range drop on H1 (163Mpc down to about 151Mpc, see attachment#1).  Was working on trying to figure out how to run the Range Check measurements, but while chatting with Vicky on Teamspeak, she reminded me about the daily CP1 Fill can affect range (see attachment #2 which is plot from Dave's alog)  ....and the effect certainly lines up! (Also see Oli's alog from Sept here.)  The time in question is 1802-1812utc (1002-1012amPT).  I will not share the Low-Range-Plots I took for 1810utc since CP1 Fill is most likely the culprit.

However, a note about the range is that it has not really returned to 163Mpc---it's hovered at 157Mpc post-CP1-Fill for the last 4+hrs.

So I ran another Low Range DTT for about an hour ago (2117utc/1317PT).

• ASC:  Can see noisier CHARD_Y & CHARD_P (attachment #3)
• LSC:  MICH, PRCL, & SRCL are noisier at various frequencies (attachment #4)
• IMC WFS:  There are some noisy IMC WFS B pit & yaw peaks (attachment #5)

Sun Nov 24 10:10:08 2024 INFO: Fill completed in 10min 4secs

TCs only just went below -90C trip, so I have increased the trip to -80C for tomorrow's fill.

TCB started at 0C, hence the additional decades in the log plot.

H1 is now back to OBSERVING and it was painless--for the most part.

• H1 went down just before the shift, but it was struggling with green arms (several cycles of INCREASE FLASHES didn't help). 
• Ultimately went for an Initial Alignment (where green arms then had no problem locking surprisingly & rest of alignment was easy)
• For locking, green arms were quick, but DRMI would not lock even right after an alignment (flashes were good, too!).  Took to PRMI and flashes were also nice, but no locking.  Since I couldn't help it, I tweaked the BS in +pitch and then PRMI locked, followed quickly by DRMI and then all the way to NLN!
• In the background, Vicky did touch up for the Squeezer and mentioned there may be SDF diffs for CS_SQZ, but she must have also taken care of that, too.

Had two separate VACSTAT glitches overnight (plots attached)

1. BSC3:  1209utc (409amPT) for about 2-seconds.
2. EX:  1347utc (547amPT) for just over 1-second.

I'm not sure on how to run a reset (toggling the DISABLED/ENABLED removed red status for BSC3, but it changed to a purple color, so I'm guessing a restart for vacstat_ioc.service will be needed per alog); I sent a text to Dave.

TITLE: 11/24 Day Shift: 1530-0030 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Lock Acquisition
OUTGOING OPERATOR: TJ
CURRENT ENVIRONMENT:
    SEI_ENV state: CALM
    Wind: 4mph Gusts, 2mph 3min avg
    Primary useism: 0.02 μm/s
    Secondary useism: 0.30 μm/s
QUICK SUMMARY:

H1 had an almost 16hr lock with the recent lockloss (having some SQZ issues due to the ISS), but NO IMC or FSS tags (link).  H1 has been having troubles with green arms (with repeated INCREASE FLASHES seen yesterday), so starting an initial alignment.

There is a RED VACstat box on the CDS Overview.  It corresponds to:  1 glitch detected and "multiple" state--which I'm assuming is because it sees a glitch at LVEA's BSC3 and EX (see attached).

Environmentally, microseism is between the 50th -95th percentile and winds are low.

The SQZ OPO is struggling to stay locked. We've dropped Observing 7x so far in the last hour. So far it has been able to recover itself, but now it seems to be struggling. If it can't recover itself soon, I'll be calling for help.

On the bright side, H1 has been locked for over 13 hours.