9:40 am local

Took about 30 sec. to overfill CP3 & CP4 each. Both nominal LLCV settings were a bit high based on exhaust pressure (non zero) and TC readings prior to fill. I've lowered CP3 to 18% and CP4 to 37%.

The /trend file system on h1tw0 became corrupt this morning about 6:05 AM PST. Rebooted computer to force unmount and fsck of file system. Many errors were discovered and repaired. It appears there may be a bad drive in the RAID, it is being replaced.  The daqd process is also dying when it encounters an improperly sized file, we will probably just remove it. 

About 24.5 hours of continuous lock, still alive.

Due to road condition, many will stay at home or come in late. I'm covering the operator shift as much as I can.

In trending the PSL Enclosure temperatures for the past few days, I remembered about the AD590-based sensor on
the table near the exit of the reference cavity chamber.  There's a sudden jump in the temperature reading.  Not
sure why this would be the case.  The reference cavity was locked at the time.

H1 is locked and Observing for 19hours43min.

Range is vacillating between 63 and 73Mpc. (as per the range medm screen)

The 1009.5 vioin mode has neither rung down nor up.

Environmental conditions are nominally good

All seismic BLRMS show downward trending

Below are trends from the past two days. I can see a definite correlation between wind speed and the .3u particle count in the PSL 101 dust monitor ~ two days ago. It's hard to tell about the most current one. The particle count is definitly high enough to set off the alarm but can wind speeds under 10mph be to blame?

I don't see any aLogs about VEA environmental changes at EY so I don't quite know what is going on with dust monitor 1. Again, I see wind speeds ≤ 10mph

TITLE: 12/12 Eve Shift: 00:00-08:00 UTC (16:00-00:00 PST), all times posted in UTC
STATE of H1: Observing at 71.8Mpc
INCOMING OPERATOR: Ed
SHIFT SUMMARY:

All shifts should be like this....weekend!  Cheryl handed off a locked H1 & it is approaching 16hrs of lock.  The range looks very good on this stretch:  flat, no glitch drops.  useism is just under the 90percentile and winds are low.

1st Harmonic of Violins (~1kHz) are high (1x^-15).  Perhaps we should address damping these guys down at some point when L1 is down?

Tonight Amber Henry was my copilot at the operator helm.  Walked her through some of the basics.

Plot attached:

TITLE: 12/11 Day Shift: 16:00-00:00 UTC (08:00-16:00 PST), all times posted in UTC
STATE of H1: Observing at 70.4106Mpc
INCOMING OPERATOR: Corey
SHIFT SUMMARY:

• alog 32441 - earthquake
• 19:15:32UTC - H1 out of Observe for a2l
  • ran a2l
• 19:23:35UTC - shelf is gone, put H1 back in Observe
• alog 32443 - a2l, and it's effect on H1
• alog 32449 - high dust counts, I suspect related to HVAC changes, but needs to be verified
• alog 32450 - site update
• 22:39:26UTC - H1 kicked out of Observe
• • channel found and unmonitored
• 22:46:58UTC - H1 back in Observe
• alog 32453 - H1 kicked out of Observe by EY ECAT PLC2

• Channel: H1:ALS-Y_FIBR_LOCK_TEMPERATURECONTROLS_ON
• 22:39:26UTC - H1 kicked out of Observe
• 22:46:58UTC - H1 back in Observe
• no change to H1 config
• Attached:
  • screenshot of EY ECAT PL2 SDF, right before I accepted that channel as unmonitored
  • DISG_SDF log
  • plot 1: H1 going out of Observe
  • plot 2: H1 going back into Observe
  • plot 3: the channel continues to change but Observe is not effected

Terra called in to check on H1.  I hadn't looked outside, so wasn't aware that we'd had sleet this morning after I got here, and she's telling me that road conditions in town are not good.  She and I talked about H1 and it's running well, so she did not come to the site.  She emailed Keita, so he's aware.

Local time translates into 15:00UTC yesterday to 21:00 today.