Grabbing the opportunity to dither-up while Livingston is still in the process of re-joining the search.

IFO has been locked in Observing for the past 15.5 hours. Need to damp the 4735 Hz violin mode and run the A2L script at the next opportunity. No other problems or issues noted.

• Overall duty cycle: 72.14 % (3 days)
• Inspiral range around 65-70Mpc - range.
  • Degradation in inspiral range (by ~5-10Mpc) coincides with noise excess in 50-200Hz appearing in the spectrogram for which the reason is unclear.
  • It could be correlated with rubbing optics, but degradation of inspiral range is less severe than typical rubbing and the frequency band of the noise is narrower than by typical rubbing.
  • But still there exists similarity between the rubbing effect and the noise excess.
• Hveto vetoed mostly low-frequency glitches (≲10Hz), but not in higher frequency range.
• Typical range decrease from 13:00 UTC due to anthropogenic ground motion at Hanford
• Detailed report shown here : DQShiftLHO20170123
• Shifter: J. Oh / S. H. Oh

Ops Shift Transition: 01/27/2017, Owl Shift 08:00 – 16:00 (00:00 - 08:00) - UTC (PT)

TITLE: 01/27 Eve Shift: 00:00-08:00 UTC (16:00-00:00 PST), all times posted in UTC

STATE of H1: Observing at 67Mpc

INCOMING OPERATOR: Jeff

SHIFT SUMMARY: Locked and Observe the entire shift. The 4735Hz has been ringing up slowly, been waiting for LLO to go down to damp it.

Attached is the 3IFO and spare parts desiccant cabinet relative humidity data with the last few months appended.  Looks near zero except when I've opened the cabinets to look for items or take the RH reading.

BRSY shows drift as one of the photodiode spots works it;s way of the photodiode. The large spike is when the box was opened to install the STS. The downward trend following thermalization shows signs of decreasing. Next weeks maintenance will be to re-center and re-zero the STS that is co-mounted to the BRS. The margin of the drift still remains good between the defined thresholds.

• Work Permits were discussed and/or closed
• We'd like to see aLogs from Dick G regarding his RF work
• As per Amber, there will be a large tour group of 4th graders early Friday morning.

For Next Tuesday's Maintenance:

VAC - Kyle will be running roughing pumps in he mechanical room next Tuesday. Gerardo will be modifying an ion pump power supply for HAM6. He will also be going to MX for purge air maintenance.

SEI - the sei team would like to re-center and re-zero the masses on the STS that is co-mounted to the BRS at EY. They would also like to begin model changes to the ISIs. They will begin with BSCs and the Output arm only as trips to input arms could potentially be to costly to chance at this time.

CDS ELE - The addresses need o be set on the Beckhoff interlock modules for the safety system. They would also like to take a look at the illuminator on ETMY.

REMINDER:Benton County Sheriff will now be making routine visites to the site during evening and owl shift times. It would help to carry proper site related ID on your person.

19:41UTC  Lockloss. No immediately apparent cause

20:39 Back to Observing

Attached is a 30 day trend of the ITMs and BS SUS vertical and Pitch drifts, along with the BSC3 external temp sensor.  Recall that the LVEA temperature control was a bit wild for a few weeks during extreme cold in our region which ended up apparently raising the temp as seen by the test mass suspensions.  This was remedied around 6 days ago and the BSC3 temp channel reports a cooling trend.  Subsequently, the TM and BS suspensions have been drifting back up.

Ignore the first channel on the plot, the BSC1 external temp sensor jumps around with offsets periodically for some unknown reason.

 Message: ETMY_ST2CPSINF_H3 high freq noise is high!

These plots were generated by Jim's new script launcher that he asked my to try out.

TITLE: 01/26 Owl Shift: 08:00-16:00 UTC (00:00-08:00 PST), all times posted in UTC
STATE of H1: Observing at 68Mpc
INCOMING OPERATOR: Ed
SHIFT SUMMARY: Observing the entire night. Ed pointed out that the 4735 Hz line is rung up. I was paying attention to the wrong line and did not notice it.
LOG:

08:45 UTC Diag reset H1IOPASC0 to clear timing error
11:31 UTC GRB. LLO is down.

Have remained in observing. H1IOPASC0 reported a timing error. I hit diag reset and cleared it. No other issues to report.

Krishna

I took a quick look at the data from the PEM STS at EndY, which is mounted on the BRSY platform. The channels are mentioned in 33533.

First plot shows the GND STS (used by SEI) and the PEM STS converted to angle units (by multiplying by w^2/g) in comparison to the BRSY - rX. The wind-speed during this time was less than 2-3 m/s. The GND STS sees less signal than the BRS below ~50 mHz, but the PEM STS sees a lot more. The second plot shows the coherence between some channels and the third plot shows the X-direction signal. The Z channel is not recorded so I can't access it through ligodv-web.

The source of extra noise in the PEM STS could be  - a) Insufficient mass centering or b) Extra temperature noise either on the STS case or the table it sits on; more insulation to the table and the STS case might help...

The pending leap second LED cleared at 16:00 PST indicating the leap second was applied correctly. Disappointingly I did not see the seconds indicator do the 58, 59, 60, 00, 01 sequence, it looks like it stayed on 00 for two seconds.