Waiting for seismic from earthquakes to subside. Two jumps in 0.03 - 0.1 Hz seismic band to 1 um/s.

SUS E_T_M_Y saturating (Nov 8 11:06:27 UTC)
SUS B_S saturating (Nov 8 11:06:27 UTC)
SUS I_T_M_X saturating (Nov 8 11:06:27 UTC)
Intention Bit: Commissioning (Nov 8 11:06:27 UTC)
ISC_LOCK state: DOWN (Nov 8 11:06:35 UTC)
DRMI Unlocked (Nov 8 11:06:35 UTC)


Appears to be an earthquake. Jump to ~ 0.5 um/s in 0.03 - 0.1 Hz seismic band.

TITLE: 11/08 [OWL Shift]: 08:00-16:00 UTC (00:00-08:00 PDT), all times posted in UTC
STATE Of H1: Observing @ ~ 79 MPc.
OUTGOING OPERATOR: Nutsinee
QUICK SUMMARY: From the cameras the lights are off in the LVEA, PSL enclosure, end X, end Y and mid X. I can not tell if they are off at mid Y.
Earthquake seismic band is between ~ 0.01 and 0.1 um/s. Microseism has been steadily increasing and is now between ~ 0.3 and 1 um/s.
Winds are between ~ 5 and 15 mph.
ISI blends are on 45mHz.

TITLE: "11/07 [EVE Shift]: 23:00-07:00UTC (16:00-00:00 PST), all times posted in UTC"

STATE Of H1:  Observing at ~80 Mpc

SUPPORT: 

SHIFT SUMMARY: Microseism has been increasing over the past 20 hrs, now reaching 1 um/s. Wind picked up speed but died down shortly after. We got no trouble there. No noticable earthquake during this shift. Hardly any glitches.

INCOMING OPERATOR: Patrick

ACTIVITY LOG:

00:01 Ed to VPW to use air compressor.

00:31 Robert has been doing HVAC injections. see alog23198.

BNS Range slowly decreasing due to increasing microseism, which now have reached its 90th percentile (5e-1 um/s). Wind starting to pick up speed (now close to 20 mph).

Our range was shown to be limited by the HVAC (Link). Since then Bubba and John have reduced air and water flow rates. Today I repeated the experiment to see how well we are doing. It looks like the HVAC is costing us about 3 Mpc now instead of about 5 before. I started some experiments to narrow down the dominant source but the microseism came up so high that I have stopped and will complete them later. Here are the ranges of time in which the HVAC was not in a steady state (the changes were made during science mode). 

Sitewide shutdown of turbines and chiller pumps.

Nov. 7 UTC

Turn off 19:15:00 19:23:34

Turn on 19:30:00  to 19:36:40

Turn off 19:45:00  to 19:48:40

Turn on 20:00:00 to 20:04:45

Turn off 20:15:00 to 20:18:40

Turn on 20:30:00  to 20:35:05

CS experiments

Nov. 8 UTC

SF 5 & 6 off 00:34:00 to 00:34:10 seis about normal, no change in range

SF 5 & 6 on 00:44:10 to 00:44:30

Turbines off but chiller pump on 1:10:00 to 1:10:10

All on 1:20:00 to 1:20:20

Chiller pump off 1:30:00 to 1:30:15

Chiller pump on 1:40:00 to 1:40:30

In the omiscans for the top 10 BBH/BNS triggers at the Hanford detector, there were three times that were startlingly noisy. The first can be seen here in the CALIB_STRAIN channel, with a good glitch correspondence picked out in the auxiliary channels:

https://ldas-jobs.ligo-wa.caltech.edu/~jacob.broida/Nov4/BBH/GW/1130687680/
https://ldas-jobs.ligo-wa.caltech.edu/~jacob.broida/Nov4/BBH/1130687680/#H1:ASC-REFL_A_RF45_Q_PIT_OUT_DQ

A quick look at the other auxiliary channels shows an unusual amount of strong noise. The following two scans, however, went even more haywire:

https://ldas-jobs.ligo-wa.caltech.edu/~jacob.broida/Nov4/BBH/GW/1130662168/
https://ldas-jobs.ligo-wa.caltech.edu/~jacob.broida/Nov4/BBH/1130662168/

https://ldas-jobs.ligo-wa.caltech.edu/~jacob.broida/Nov4/BNS/GW/1130662171/
https://ldas-jobs.ligo-wa.caltech.edu/~jacob.broida/Nov4/BNS/1130662171/

As of yet we are still unsure about the cause of all this noise.

TITLE:    Nov 6 DAY Shift 16:00-00:00UTC (08:00-04:00 PDT), all times posted in UTC

STATE Of H1: Observing

SUPPORT: Robert, Sudarshan

LOCK DURATION: ≈6.5 hrs (this shift)

INCOMING OPERATOR: Nutsinee

END-OF-SHIFT SUMMARY: IFO Locked most of shift. Robert on site doing some measurements concerning HVAC activity. Brief period of Lockloss for about 1.5 hours, reason unknown. Re-locking was only hindered by ISS second loop engaging. Sudarshan was on deck to help with that and direct me to an aLog entry to add to Ops Wiki. Microseism extends into .8um/s  territory. Handing off to Nutsinee.

ACTIVITY LOG:

16:10 Large wobble in ASC and Tidal that lasted for only ≈2 minutes. Perhaps due to the 4.9 EQ near Venezuela. Terramon issued an 08:23PST R-Wave of .35microns. This didn’t show in 30-100mHz bands and it was below the microseismicity but the timing was nearly coincidental.

18:55  Robert is going to be doing some HVAC variations while IFO is in Science Mode. See aLog #22532

20:30  A Critical Dust Alarm keeps occurring from the vacuum prep lab.

21:10  LockLoss

22:06  Sudarshan helped to troubleshoot ENGAGE_ISS_SECOND_LOOP step with the help of a Kiwamu aLog which has now been added into the Operators Troubleshooting Wiki.

22:09 IFO relocked and Intent bit set to Oberving

22:09UTC

21:10UTC There doesn't seem to be an obvious reason for this, environmentally. Also, bringing the 1 hour stand down time to a slightly pre-mature end.

IFO Locked and observing @ 81.5Mpc. Robert has been doing some HVAC coupling testing/injections while in Science mode. Winds are still calm. µSei spiked to .9microns for a short while but is back down to .4. EQ bands haven’t risen above .1microns despite some minor earthquake activities in the Venezuela area. Robert, Jordan and now Sudarshan are on site.

This occurred during Robert's HVAC testing.

Gamma Ray Burst (Nov 7 17:28:42 UTC)

THe IFO is Locked and in Observation mode. 80Mpc.

Livingston is currently down with what looks like high microseism woes.

TITLE: Nov 7 DAY Shift 16:00-23:00UTC (08:00-04:00 PDT), all times posted in UTC

STATE Of H1: Observing

OUTGOING OPERATOR: Patrick

QUICK SUMMARY: IFO is in Observing @ ≈80Mpc. Eq sei bands are all in the .2micron range. µSei is around .6µ. Wind is calm.. All light appear to be off in E, M, CS & PSL. CW injections are running. Cal lines are running. Livingston is having some troubles. 45M blends being used.

During the down hour, I made shaker injections at HAM1 and IOT2, and made the following site activity injections: