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Reports until 17:41, Sunday 25 June 2017
H1 General
thomas.shaffer@LIGO.ORG - posted 17:41, Sunday 25 June 2017 - last comment - 18:50, Sunday 25 June 2017(37119)
Lockloss @ 00:17 UTC

The control signals started ringing up for the past 40min or so. They got to the point where I felt like we were going to lose it any second. CSOFT P and CHARD P seemed to be rung up the most, so in an act of desperation I went to ramp down the gain on those one at a time. It didn't work.

There are no obvious clues to me as to why the control loops started to ring up. I attached the lockloss plot and some trends

Images attached to this report
Comments related to this report
thomas.shaffer@LIGO.ORG - 18:09, Sunday 25 June 2017 (37120)
Link

Back to Observing 01:09 UTC

thomas.shaffer@LIGO.ORG - 18:50, Sunday 25 June 2017 (37121)
Link

The instability continues, but doesn't seem to be getting worse to the point of lock loss. It is hurting our range as we are now down to 56Mpc.

LHO General
thomas.shaffer@LIGO.ORG - posted 16:12, Sunday 25 June 2017 (37118)
Ops Eve Shift Transition

TITLE: 06/25 Eve Shift: 23:00-07:00 UTC (16:00-00:00 PST), all times posted in UTC
STATE of H1: Observing at 68Mpc
OUTGOING OPERATOR: Corey
CURRENT ENVIRONMENT:
    Wind: 11mph Gusts, 9mph 5min avg
    Primary useism: 0.02 μm/s
    Secondary useism: 0.11 μm/s
QUICK SUMMARY: Almost 12hr lock, Corey had an earthquake that we rode through.

LHO General
corey.gray@LIGO.ORG - posted 15:59, Sunday 25 June 2017 (37115)
DAY Operator Summary

TITLE: 06/25 Day Shift: 15:00-23:00 UTC (08:00-16:00 PST), all times posted in UTC
STATE of H1: Observing at 68Mpc.
INCOMING OPERATOR: TJ
SHIFT SUMMARY:

Nice quiet shift with H1 up the entire shift.
LOG:

 

H1 SEI (SEI)
corey.gray@LIGO.ORG - posted 14:03, Sunday 25 June 2017 - last comment - 19:46, Sunday 25 June 2017(37116)
Earthquake Report: 6.2 near Tonga, H1 Remained Locked (& mid-shift report)

Summary:  H1 Remained Locked, L1 Broke lock, Virgo was already down before EQ

H1 rode through this decent-sized EQ from the South Pacific.  The green ITMY Z EQ BLRMS signal approached 1000nm, but never got there (instructions say to take it to LARGE_EQ, which I assume is LARGE_EQ_NOBRSXY [I'm assuming even when locked?], but we never reached the threshold).

Play By Play Of Signals/Tools/Monitors As EQ Approaches/Passes:

Comments related to this report
edmond.merilh@LIGO.ORG - 15:44, Sunday 25 June 2017 (37117)
Link

The last conversation that I had with Jim left me the understanding that switching to Large EQ anything is done after the lock is broken and is to simply keep the tripping under control. Unless I misunderstood, I don't think switching in-situ is going to help. Am I wrong? anyone?

jim.warner@LIGO.ORG - 19:46, Sunday 25 June 2017 (37123)
Link

Ed's right, the only intent of the large eq state is to keep the tables from tripping when the low frequency ground motion is large. Going to this state outside of some narrow circumstances will probably break the lock. The other eq states might work better, but the transition isn't fast enough and will also probably break the lock.

To remind everyone what the response is during an earthquake: While the IFO is locked, do nothing. AFTER  the IFO goes down, if the earhtquake is big (probably like a mag 7+, but depends on distance) switch to the large eq state. When .03-.1 hz blrms are somewhere below 1 micron, switch back to the windy state. This is just to prevent tables from tripping, saving time and steps in recovery. The hope is that if the tables don't trip, you're less likely to have to do an initial alignment.

If you like resetting watchdogs and running through initial alignment, feel free to ignore these directions.

LHO General
corey.gray@LIGO.ORG - posted 08:31, Sunday 25 June 2017 (37114)
Transition To DAY

TITLE: 06/25 Day Shift: 15:00-23:00 UTC (08:00-16:00 PST), all times posted in UTC
STATE of H1: Observing at 67Mpc
OUTGOING OPERATOR: Jim
CURRENT ENVIRONMENT:
    Wind: 4mph Gusts, 3mph 5min avg
    Primary useism: 0.01 μm/s
    Secondary useism: 0.07 μm/s

useism continues it's downward step down from yesterday.  Winds are gentle/neglible.
QUICK SUMMARY:

Two fast locklosses over the last 12hrs for H1; Jim mentioned recent one was extremely easy/fast to recover from.  Currently approaching 4hr lock. 

Noticed some recent DARM blrms oscillations on the video0 StripTool, (see attached)....these have generally been flat when I've scanned them for my recent shifts of last couple weeks:

  1. 14:15-14:17utc:  On Bands 2,3,4 & 5
  2. 14:45:  On Bands 2,3,4, & 5 for duration less than a minute
  3. 15:08:  On Bands 2 & 3

(Only mentioning these, because haven't noticed much activities on these lately.)

Images attached to this report
H1 General
jim.warner@LIGO.ORG - posted 08:04, Sunday 25 June 2017 (37113)
Shift Summary

TITLE: 06/25 Owl Shift: 07:00-15:00 UTC (00:00-08:00 PST), all times posted in UTC
STATE of H1: Observing at 67Mpc
INCOMING OPERATOR: Corey
SHIFT SUMMARY: One unexplained lockloss, but it locked right back up
LOG:

10:54 Lockloss

11:22 Back to Observing

 

LHO General
thomas.shaffer@LIGO.ORG - posted 00:00, Sunday 25 June 2017 (37111)
Ops Eve Shift Summary

TITLE: 06/25 Eve Shift: 23:00-07:00 UTC (16:00-00:00 PST), all times posted in UTC
STATE of H1: Observing at 67Mpc
INCOMING OPERATOR: Jim
SHIFT SUMMARY: One lock loss, but ti came back up with no issues.
LOG:

H1 General
thomas.shaffer@LIGO.ORG - posted 22:22, Saturday 24 June 2017 - last comment - 22:47, Saturday 24 June 2017(37110)
Lockloss @05:03UTC

No obvious reasons why we broke lock. 60hrs and 2min

Images attached to this report
Comments related to this report
thomas.shaffer@LIGO.ORG - 22:47, Saturday 24 June 2017 (37112)
Link

Back to Observing at 05:47 UTC

H1 General
thomas.shaffer@LIGO.ORG - posted 20:24, Saturday 24 June 2017 (37109)
Ops Mid Shift Report

58 hours locked with calm environment. DIAG_MAIN started reporting the PCAL Y RX PD greater than 1% off message again. Trended and saw the same as yesterday (see 37103)

LHO General
thomas.shaffer@LIGO.ORG - posted 16:05, Saturday 24 June 2017 (37108)
Ops Eve Shift Transition

TITLE: 06/24 Eve Shift: 23:00-07:00 UTC (16:00-00:00 PST), all times posted in UTC
STATE of H1: Observing at 67Mpc
OUTGOING OPERATOR: Corey
CURRENT ENVIRONMENT:
    Wind: 9mph Gusts, 7mph 5min avg
    Primary useism: 0.04 μm/s
    Secondary useism: 0.10 μm/s
QUICK SUMMARY: 54 hour lock, calm environment.

LHO General
corey.gray@LIGO.ORG - posted 16:05, Saturday 24 June 2017 (37107)
DAY Operator Summary

TITLE: 06/24 Day Shift: 15:00-23:00 UTC (08:00-16:00 PST), all times posted in UTC
STATE of H1: Observing at 68Mpc
INCOMING OPERATOR: TJ
SHIFT SUMMARY:

Nice quiet shift with H1 locked for almost 54hrs.  
LOG:

LHO General
corey.gray@LIGO.ORG - posted 08:12, Saturday 24 June 2017 (37106)
Transition To DAY

TITLE: 06/24 Day Shift: 15:00-23:00 UTC (08:00-16:00 PST), all times posted in UTC
STATE of H1: Observing at 68Mpc
OUTGOING OPERATOR: Jim
CURRENT ENVIRONMENT:
    Wind: 4mph Gusts, 3mph 5min avg
    Primary useism: 0.01 μm/s
    Secondary useism: 0.12 μm/s

useism has taken a step below the 50th percentile in the last 14hrs.  No winds.  Going to be a hot one today (102degF forecast!).
QUICK SUMMARY:

H1 locked for 46+hrs.  H1, L1, & V1 have been locked for the majority of the last 22hrs.

H1 General
jim.warner@LIGO.ORG - posted 07:58, Saturday 24 June 2017 (37105)
Shift Summary

TITLE: 06/24 Owl Shift: 07:00-15:00 UTC (00:00-08:00 PST), all times posted in UTC
STATE of H1: Observing at 69Mpc
INCOMING OPERATOR: Corey
SHIFT SUMMARY: Quiet shift
LOG:

Nothing to report. A couple small earthquakes, but locked for 45 hours now.

LHO General
thomas.shaffer@LIGO.ORG - posted 00:03, Saturday 24 June 2017 (37104)
Ops Eve Shift Summary

TITLE: 06/24 Eve Shift: 23:00-07:00 UTC (16:00-00:00 PST), all times posted in UTC
STATE of H1: Observing at 66Mpc
INCOMING OPERATOR: Jim
SHIFT SUMMARY: Nothing much to report other than what was mentioned in 37103.
LOG:

H1 General (CAL)
thomas.shaffer@LIGO.ORG - posted 20:47, Friday 23 June 2017 (37103)
Ops Mid Shift Report

Locked for 34 hours at 67Mpc.

DIAG_MAIN is showing "PCAL: Y RX PD is greater than 1% off". Trending the channel that is looks at (H1:CAL-PCALY_RX_PD_VOLTS_OUTPUT), it has dropped very slightly. This same message showed up about 12 hours ago, so I got suspicious of temperature. Sure enough, you can clearly see it dip with the temperature. See 2 day trend below

Images attached to this report
LHO General
thomas.shaffer@LIGO.ORG - posted 16:07, Friday 23 June 2017 (37102)
Ops Eve Shift Transition

TITLE: 06/23 Eve Shift: 23:00-07:00 UTC (16:00-00:00 PST), all times posted in UTC
STATE of H1: Observing at 65Mpc
OUTGOING OPERATOR: Travis
CURRENT ENVIRONMENT:
    Wind: 11mph Gusts, 9mph 5min avg
    Primary useism: 0.02 μm/s
    Secondary useism: 0.13 μm/s
QUICK SUMMARY: 30 hr lock, not much else to report

H1 General
travis.sadecki@LIGO.ORG - posted 16:00, Friday 23 June 2017 (37101)
Ops Day Shift Summary

TITLE: 06/23 Day Shift: 15:00-23:00 UTC (08:00-16:00 PST), all times posted in UTC
STATE of H1: Observing at 67Mpc
INCOMING OPERATOR: TJ
SHIFT SUMMARY:  Locked in Observing for the entire shift and ~27 hours total.  No issues to report.
LOG:  None

H1 General
travis.sadecki@LIGO.ORG - posted 12:10, Friday 23 June 2017 (37100)
Ops Day Mid-shift Summary

We have remained in Observing for the duration of the shift thus far.  26 hours locked and 23.5 hours in Observing.

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