Locklosses from NLN 07/09 to 07/16:

• 2023-07-09 13:00:54 ISI Issue FRS28481 Link
• 2023-07-10 07:57:37 Unknown Link NLN for 2h29
• 2023-07-10 15:57:45 Unknown Link NLN for 4h57
• 2023-07-10 20:45:37 Earthquake Link
• 2023-07-11 15:08:16 Tues Maintenance
• 2023-07-11 22:29:29 Unknown Link NLN for 2h00
• 2023-07-12 17:25:48 Interlock Tripped Link
• 2023-07-13 08:09:53 Unknown Link NLN for 7h05
• 2023-07-14 09:36:44 Earthquake Link
• 2023-07-14 16:18:25 Camilla Error Link
• 2023-07-14 22:29:00 Earthquake Link
• 2023-07-15 19:06:32 Unknown Link NLN for 18h32
• 2023-07-16 06:54:21 Earthquake Link
• 2023-07-16 12:40:58 Unknown Link NLN for 0h10

Total 14: 6 unknown, 4 earthquake, 2 user error, 1 hardware issue, 1 expected (Tues Maintenance).

TITLE: 07/16 Day Shift: 15:00-23:00 UTC (08:00-16:00 PST), all times posted in UTC
STATE of H1: Observing at 135Mpc
CURRENT ENVIRONMENT:
    SEI_ENV state: CALM
    Wind: 9mph Gusts, 5mph 5min avg
    Primary useism: 0.01 μm/s
    Secondary useism: 0.04 μm/s
QUICK SUMMARY: Been in NLN 30minutes.

Dust monitors, VAC, CDS, SUS, SEI all good.

TITLE: 07/16 Owl Shift: 07:00-15:00 UTC (00:00-08:00 PST), all times posted in UTC
STATE of H1: Earthquake
SHIFT SUMMARY:

Shift started with a whopper Alaskan earthquake and it took 5.5hrs to get back to OBSERVING.  (...but sadly, H1 had a lockloss 10min later!).  There was a Tsunami Warning triggered (albeit retracted/downgraded shortly afterward).

The above lockloss was a bit of mystery (Lockloss file is noted as a "FAIL", but it also lists a "Board Saturation"

Kind of forced to run an Initial Alignment because ISC LOCK quickly makes the call of whether to give PRMI a chance or not.  (but in hindsight, did get H1 to Observing after an Initial Alignment)
LOG:

• (0654) 7.4M Alaska EQ takes down H1 (seismic FOM attached):  tripped 7-SEI ISIs, RED picket fence, SEI Peakmon mean hit about 100,000 counts (which is offscreen on the ISI_config medm which only goes up to 2,000 counts!); IMC has trouble locking for dozens of minutes (but this could also be due to low diffracted power that's been noted), keeping ISC LOCK in PREP FOR LOCKING for about an hour.
  • 756 Have all ISIs back to their nominal states
  • 0803 Attempting LOCKING ARMS GREEN....Y-arm miraculously locked for a handful of seconds...but then both x&y went into INCREASE FLASHES.
  • 0914 Attempted to LOCK ARMS GREEN again---Xarm offloaded (Woo woo!), Yarm took a little more time, but also offloaded a few minutes later.
  • 0935 CHECK MICH FRINGES offloaded, but then lockloss.
  • 0950 First look at PRMI---pretty misaligned in yaw...quickly tried steering PRM in yaw, but then ISC_LOCK quickly went to CHECK MICH FRINGES again :-/
    • I don't like that ISC LOCK only gives ACQUIRE PRMI a few seconds (I was able to improve PRMI flahses, but then ISC LOCK went to CHECK MICH FRINGES -again-!  Guess I have to run an alignment since ISC LOCK won't allow me to tweak PRM without being rushed. :(
  • 1003-1101 Initial Alignment (on a shaky planet) started  (all the while Picket Fence continues to flash yellow here and there)
    • SRC ALIGNdidnt' work on first try (stuck at acquire sry).  On 2nd try, it went through an SR2 align (it skipped that step the first time.  Hmmm.)
    • Still would not acquire SRY.
    • So aligned SR2 & SRM by hand and tried SRC_ALIGN again....but it would not LOCK SRY.
    • Skipped!  Ended Alignment at 1101
  • 1050 Seismic to CALM
• 1108 LOCK #1 (post EQ): On first DRMI acquire it locked within seconds!
  • In contrast to the Chiapas eq Fri morning, ISC LOCK proceeded right to powering up (Fri violins were so rung up that H1 hung out at CHECK VIOLINS BEFORE POWERUP for quite a bit of time).
  • 1143 Waiting at OMC WHITENING, DCPDs are at 1,842,980 counts!! (target is under 524k!)
    • 1201Have all violin modes to their nominal gains (counts continue to drop, but still at about 1million!)
    • 1223 OMC Whitening completes after violins are good.
  • 1230 OBSERVING
• 1240 LOCK #2:  LOCKLOSS from OBSERVING
• 1301 LOCK #3:  LOCKLOSS at OFFLOAD DRMI ASC
• 1311 LOCK #4:  LOCKLOSS at START TR CARM
• 1312 LOCK #5:  OMC WHITENING had DCPDs at OVER 2-million counts(!) 
  • 1435 OBSERVING
• 1405 EQ Mode Activated (5.1M EQ in Mexico)
• 1425 EQ Mode to Calm

Lockloss at 1240utc.

There were no environmental issues and all the ISC FOMs looked fine. :-/

Much of the first half of the shift involved waiting for the earth to stop ringing due to the Alaska earthquake. 

Did my darnedest to avoid an Initial Alignment, but ISC_LOCK pretty much forced me to.  INITIAL ALIGNMENT successful for every step except for SRC ALIGN (I later aligned SR2 & SRM by hand, but SRC ALIGN was still NOT HAPPY & FAILED, so I skipped it and ended the INITIAL ALIGNMENT.).

[SEI_ENV finally went to calm at 1050utc (350amPT)---almost 4hrs later!]

After Alignnment, DRMI locked immediately when prompted!  Now continuing through ISC LOCK.

TITLE: 07/16 Owl Shift: 07:00-15:00 UTC (00:00-08:00 PST), all times posted in UTC
STATE of H1: Earthquake
CURRENT ENVIRONMENT:
    SEI_ENV state: LARGE_EQ
    Wind: 6mph Gusts, 5mph 5min avg
    Primary useism: 20.46 μm/s
    Secondary useism: 4.52 μm/s
QUICK SUMMARY:

As soon as I entered the Control Room, I saw Ryan C. smiling at me, and then noticed LSC signals getting big on the PRMI_sb FOM for a couple of seconds and then BOOM!  7.4M Alaska earthquake!  Definitely bigger than the 6.3 Chiapas earthquake Fri morning (w/ only one ISI tripping)---we have a whopping 6 ISI Watchdogs tripped and the Seismic FOMs definitely look much bigger than the Fri EQ, with BOTH eq-bands going off-scale!  ....I'm going to put my timer on for an hour before even attempting locking!  H1 Observatory Mode is obviously in EARTHQUAKE state.

Oh and it's a balmy 81degF out.

I took us to comissioning and to NLN_CAL_MEAS for a calibration measurement as requested by Louis. I ran the command: "pydarm measure --run-headless bb sens pcal", I started the measurement at gpstime 1373514290, at finished at 1373516180 a bit longer than I was expecting. The calibration monitor from before I started.

TITLE: 07/16 Eve Shift: 23:00-07:00 UTC (16:00-00:00 PST), all times posted in UTC
STATE of H1: Observing at 133Mpc
SHIFT SUMMARY:

• We've been locked for 9:55 as of 07:00UTC
• Calibration measurement taken
• Handing off to Corey, as he walked in we got hit by a 7.3 from Alaska and lost lock

I went out of Observing at 03:44 to take a broadband measurement (alog 71361) after seeing LLO was down and checking in with their control room via TS. I after it was done I put everything back and brought us back to Observing at 04:20UTC. I accidentally took a longer measurement than I intended to, I had extra unneeded arguments (sens pcal).

LOG:

No log for this shift

STATE of H1: Observing at 132Mpc

We've been locked and Observing for 5:52, everything looks good

TITLE: 07/15 Day Shift: 15:00-23:00 UTC (08:00-16:00 PST), all times posted in UTC
STATE of H1: Observing at 132Mpc
SHIFT SUMMARY: Been in NLN 1h55, still haven't had a TOO to take the 'pydarm measure --run-headless bb' calibration measurement.
LOG:

• Lockloss @ 19:06UTC 1373483210 alog 71353
  • 20:03-20:07UTC IMC_LOCK was struggling during laser noise suppression with log message "Diffracted power jumped too much, toggling secondloop", didn't look into how long this has been going on for Tagging PSL
  • During relock while damping violins I did some OMC shaking 71354
• Back to NLN and Observing at 21:08UTC
  • Small EQ from Japan at ~21:50UTC

TITLE: 07/15 Eve Shift: 23:00-07:00 UTC (16:00-00:00 PST), all times posted in UTC
STATE of H1: Observing at 132Mpc
CURRENT ENVIRONMENT:
    SEI_ENV state: CALM
    Wind: 12mph Gusts, 9mph 5min avg
    Primary useism: 0.02 μm/s
    Secondary useism: 0.05 μm/s
QUICK SUMMARY:

• Taking over from Camilla
• We've been locked and Observing for 1:54
• CDS/Vac/Dust/Violins look good

Eleonora, Camilla

We repeated Eleonora's 68910 OFI shaking with longitudinal OMC shaking 20:14UTC-21:01UTC while we were waiting in OMC_WHITENING for the violins to damp. This means we were not in our full nominal low noise configuration.

Injected a 0.65Hz (Rahul's TF's in 69726) sine wave into H1:SUS-OMC_M1_TEST_L_EXC using 'awggui' command. Gain 3000. This could be seen as +/- 6um on DAMP_L_INMON, with some cross-coupling in other degrees of freedom, see attached. 

• 20:14- 20:18UTC ramping up gain to get good sized shelf.
• 20:18 - 20:29UTC 0.65Hz with G 3000 - with SQZ
• 20:29 - 20:39UTC No shaking, quiet time - with SQZ
• 20:40 - 20:50UTC No shaking, quiet time - No SQZ
• 20:51 - 21:01UTC 0.65Hz with G 3000 - No SQZ (no difference)

This was more data than the 10 minutes Eleonora asked for but I had the time while the violins were damping. She would like this repeated for OPO and FC but I wasn't sure how the FC and IFO SQZ ASC's would react so will need to speak with Naoki first.

1373483210 After 18h29 in NLN. No obvious reason why.