Although it seems to have stopped on its own, and Keita had a look at the code and didn't see any issues, IMC_LOCK went into an error state and reported something like "Cannot connect to ISS_THIRD_LOOP_SERVO_GAIN".  Maybe someone in CDS-land can have a look at this and tell me if it was user error or otherwise.

Due to an 5.3 EQ Northern Mid Atlantic Ridge.

TITLE: 06/29 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: Cheryl
CURRENT ENVIRONMENT:
    Wind: 12mph Gusts, 9mph 5min avg
    Primary useism: 0.05 μm/s
    Secondary useism: 0.07 μm/s
QUICK SUMMARY:  No issues handed off.  Cruising for 2.5 hours on the latest Observing stretch.

TITLE: 06/29 Day Shift: 15:00-23:00 UTC (08:00-16:00 PST), all times posted in UTC
STATE of H1: Observing at 66Mpc
INCOMING OPERATOR: Travis
SHIFT SUMMARY:
LOG:

• 14:30-17:55UTC - PeterK and Rick in OSB optics lab, now out
• 17:57UTC - Kyle to MY, no vacuum changes
• 18:23UTC - Kyle leaving MY heading to MX
• 18:42UTC - Kyle back from MY
• restarted Displacement spectra plot on nuc4
• Lock clock at 23:22 hours, ISC_LOCK was reloaded last night around 23.5 hours ago (glitched H1, can be seen in the range)
• H1 locked for 44 hours

I accidentally took the interferometer out of observe with an SDF mistake while I was setting up jitter monitor blrms in OAF.  We were out of observe for 1 minutes starting at 20:33 UTC

• Tuesday - no LN2 deliveries
• Wednesday - Maintenance:
• LN2 deliveries
• list of activities attached

Shifter: Beverly Berger

LHO Fellows: Pep Covas Vidal, Karl Toland

• Duty cycle 72.6% on Monday, 17.6% on Tuesday, 84.7% on Wednesday for a total average over the shift of 58.3%. The BNS range was typically 68 Mpc.
• LHO remained locked and in observing during an earthquake at about 19:00 UTC on Wednesday, 28 June, but the noise and glitch rate were significantly elevated during this period.
• Unusual acoustic features appear at EY on 26 and 28 June (as well as other days) including broadband sharp noise, especially around 1:30 UTC, narrowband extended noise at around 23 Hz, and nearly periodic noise bursts at around 9 Hz. 
• The BSC3 accelerometer spectrogram seems anomalous and has done so since 16 May 2017.
• Strong noise bands appeared below 15 Hz in the bounce/roll mode region in the first lock after the 28 June 19:00 UTC earthquake and persisted until the first lock loss on 29 June. The timing matches from turning on the dither lines (see alog 37205).
• The 12:00 UTC range drop due to truck traffic has disappeared from h(t) even though the traffic's effect on seismic is clearly visible. This follows the modification of the Swiss cheese baffle. See for example alog 36979.
• Lock losses that began at 00:17 UTC on 26 June (see alogs 37119, 37122, 37126) were apparently traced to ISS DC coupling (see alog 37168 and comments) and were eliminated by resetting some loop parameters and lines in Guardian.

For complete results see https://wiki.ligo.org/DetChar/DataQuality/DQShiftLHO20170626

TITLE: 06/29 Day Shift: 15:00-23:00 UTC (08:00-16:00 PST), all times posted in UTC
STATE of H1: Observing at 69Mpc
OUTGOING OPERATOR: Ed
CURRENT ENVIRONMENT:
    Wind: 10mph Gusts, 8mph 5min avg
    Primary useism: 0.02 μm/s
    Secondary useism: 0.06 μm/s
QUICK SUMMARY:

• H1 still locked since yesterday
• Lock Clock says 16 hours, the lock is 36 hours long
• 15:27UTC - Karen opening the OSB receiving external roll up door, on the approved list in our site activity document

TITLE: 06/29 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: Cheryl
SHIFT SUMMARY:

Quiet shift.
LOG:

14:29 Peter into the optics lab.

12:54UTC Begin 1 hr stand down. Confirmed with LLO.

TITLE: 06/29 Owl Shift: 07:00-15:00 UTC (00:00-08:00 PST), all times posted in UTC
STATE of H1: Observing at 68Mpc
OUTGOING OPERATOR: Travis
CURRENT ENVIRONMENT:
    Wind: 10mph Gusts, 8mph 5min avg
    Primary useism: 0.02 μm/s
    Secondary useism: 0.09 μm/s
QUICK SUMMARY:

Re-started video4 computer. Steady sailing.

TITLE: 06/29 Eve Shift: 23:00-07:00 UTC (16:00-00:00 PST), all times posted in UTC
STATE of H1: Observing at 68Mpc
INCOMING OPERATOR: Ed
SHIFT SUMMARY:  Observing for ~5 hours.  No issues to report.
LOG:  None

To run A2L while LLO is down.

IMC_LOCK guardian was reloaded which dropped us out of Observe.

TITLE: 06/28 Eve Shift: 23:00-07:00 UTC (16:00-00:00 PST), all times posted in UTC
STATE of H1: Observing at 69Mpc
OUTGOING OPERATOR: Cheryl
CURRENT ENVIRONMENT:
    Wind: 16mph Gusts, 13mph 5min avg
    Primary useism: 0.04 μm/s
    Secondary useism: 0.09 μm/s
QUICK SUMMARY:  No issues handed off.  Lock is 19 hours old, but latest Observing stretch is only 2.5 hours old due to dropping out of Observe to change SEI Config for EQ and another drop for some commissioning.

23:09 Drop out of Observe so Sheila can move one of her dither lines.

TITLE: 06/28 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: Travis
SHIFT SUMMARY:
Activities:  all times UTC

• 18:34-18:36 - out of Observe for SEI change, see earlier alog for explanation
• H1 remained locked during the earthquake in Earth_Quake_2 SEI configuration!
• 20:00-20:41 - out of Observe for Sheila's WP#7062, and SEI was set back to WINDY
• 20:58 - computer in CER was on, powered off remotely
• H1 in Observe since 20:41UTC

As described in WP 7062, I have turned on alignment dither lines for PR3, ETMX, and ETMY.

The attached script turns on the lines and sets up the demod matrices, although I don't think it should be necessary to turn the lines off. The attached spectrum shows the new lines in DARM and PRCL at 6.7 Hz (ETMX Pit), 8.1Hz ETMX Yaw, (8.43Hz ETMX yaw), 7.4 Hz ETMX pit, 8.8 Hz ETMY yaw, 13.2 Hz PR3 PIT and 14.8 Hz PR3 Y.  These lines are on for the first time in this lock stretch (starting around 20:30 UTC Jun 28th).  I am hopping to leave them on for a few days/up to a week to get some data. 

The motivation for this is to leave these lines on for several days, to see if using a dither to replace some of QPDs would help to make our jitter coupling more stable over time.

Edit: Keita and Jeff K were concerned about the line at 8.1 Hz potentially causing a problem for calibration, so I moved it to 8.43 Hz.