Checked the mass centering on the T240 Deployed Wednesday, but I did not center them.

Day                U       V       W

Wednesday 0.12  0.09  0.02V

Friday          -.11   -.22   -.32

So the warm up of the springs is evident on the mass positions but it is still within comfortable range.

It will need re-centering when we put the T240 into the BRS enclosure (Tuesday.)

• EQ seen at: 
  • USGS: Listed as occurring at 17:28utc
  • Seis BLRMS:  ~17:30utc
  • Terramon:  18:15 arrival estimate
• Magnitude: 6.9
• Location: Fiji
• Lock Status: H1 & L1 both lost lock.

We were already in Commissioning but then a 6.9 from Fiji rolled through.

TITLE: 02/24 Day Shift: 16:00-00:00 UTC (08:00-16:00 PST), all times posted in UTC
STATE of H1: Observing at 69Mpc
OUTGOING OPERATOR: Corey
CURRENT ENVIRONMENT:
    Wind: 3mph Gusts, 2mph 5min avg
    Primary useism: 0.02 μm/s
    Secondary useism: 0.18 μm/s
QUICK SUMMARY: 2.5hours lock at 70Mpc. Hopefully the earthquakes dont continue today.

TITLE: 02/24 Owl Shift: 08:00-16:00 UTC (00:00-08:00 PST), all times posted in UTC
STATE of H1: Observing at 66Mpc
INCOMING OPERATOR: TJ
SHIFT SUMMARY:

Another nice quiet shift other than a decent-sized quake from the other side of the hill (off north Vancouver island).
LOG:

• 8:19  Diag RESET for h1iopasc0
• 10:53 Alaska EQ passes by (only observed via tidal signals)
• 12:33 Lockloss due to 4.9 Canada EQ
  • 13:32 Back to OBSERVING
• LLO will be going to COMMISSIONING at 9amPST.  We have Work Permits to do the same when Commissioners are ready.

• EQ seen at: 
  • USGS: Listed as occurring at 12:28utc
  • Seis BLRMS:  12:31utc
  • Terramon:  12:32 arrival estimate
  • Tidal signals start seeing around 12:30utc
• Magnitude: 4.9
• Location: Canada, Point Hardy again
• Start time: 12:30utc local
• Lock Status: H1 dropped first (ending ~14hr lock) and then L1.

12:31:  tidal signals elevate

12:33:  Lockloss due to 5.0 EQ from India

------

Actually this is another Point Hardy, Canada aftershock.

First attempt at locking up had the ASC control singals ringing up around the ENGAGE_REFL_POP_WFS step.  This is a new feature to me.

• EQ seen at: 
  • USGS: Listed as occurring at 10:24utc
  • Terramon: reported r-wave to arrive at 10:45utc
  • Seismic BLRMS: 10:37utc it begins to ramp up
  • Tidal showed oscillations at 10:53utc
• Magnitude: 4.9
• Location: Alaska
• Start time: 10:37utc local
• Lock Status: H1 & L1 ride through it.

Just got a call in from Mike L. inquiring about whether we had a power outage on the site (we are fine).  Sounds like at around 2:15am local time part(s) of Kennewick had an outage (Mike had reported not being able to see some CDS webpages (I was able to look at them from my laptop via the GC network).  At any rate, luckily no issues to deal with here *knock on wood*.

TITLE: 02/24 Owl Shift: 08:00-16:00 UTC (00:00-08:00 PST), all times posted in UTC
STATE of H1: Observing at 68Mpc
OUTGOING OPERATOR: Cheryl
CURRENT ENVIRONMENT:
    Wind: 3mph Gusts, 2mph 5min avg
    Primary useism: 0.02 μm/s
    Secondary useism: 0.16 μm/s
QUICK SUMMARY:

All is quiet on the H1 front.  Cleared a TIMING error on the h1iopasc0 front end (same as last night).  L1 was down and very quickly came back up 14min ago and we are back to double coincidence.

Now to go through the Ops Checksheet.

TITLE: 02/24 Eve Shift: 00:00-08:00 UTC (16:00-00:00 PST), all times posted in UTC
STATE of H1: Observing at 66Mpc
INCOMING OPERATOR: Corey
SHIFT SUMMARY:

• not much activity
• one earthquake, H1 stayed in Observe, alog 34358
• one break from Observe, Operator error, alog 34360

• FAMIS Task 8034: trend BRSX and BRSY drift over about 7 weeks.
• BRSX is holding a value near zero, with few excursions.
• BRSY is trending downward, and it looks like that's been a trend, and current value is around -7500.

DQ shifter: Beverly

LHO fellows: Heather, Vaishali, Evan

• Excellent duty cycle averaging 86.8% over the three days including 100% on Wednesday and a remarkable 77% on maintenance Tuesday.
• The BNS range was very steady at around 70 Mpc with brief episodes of slightly lower range.
• An especially noisy period between 22:10 and 22:26 on Wednesday resulted from moving a forklift and roof walking during Observing (see alog 34330).
• Excess noise in h(t) appeared at around 13:00 on Tuesday and Wednesday that appeared to be correlated with a bump in ground motion and excess bounce/roll mode noise. On Wednesday, this could be related to a wind spike and a degredation of the YAW alignment observed at that time (see forthcoming alog from Heather). This correlation happened previously (see alog 32370 ) and was attributed to truck traffic on Route 10 near the entrance to the site. 
• Some noise visible as "towers" in the hourly h(t) spectrograms appear to be "blue mountains" aka "scratchy" of unknown cause.
  Full results may be found at https://wiki.ligo.org/DetChar/DataQuality/DQShiftLHO20170220.

I used an older diaggui template of mine and didn't realize it had excitation channels chosen for the IMs, so when I ran it, H1 was knocked out of Observe.

The attached plot suggests no actual injection happened, plot covers 2:48:00UTC to 2:50:00UTC.

Time out of Observe:

• Out of Observe at 02:48:52UTC
• back in Observe at 02:49:24UTC
• total of 32 seconds

Excitation Channels:

• H1:SUS-IM1_M1_OSEMINF_LL_EXC
• H1:SUS-IM2_M1_OSEMINF_LL_EXC
• H1:SUS-IM3_M1_OSEMINF_LL_EXC
• H1:SUS-IM4_M1_OSEMINF_LL_EXC

Monitoring from home.  Likely won't need to be addressed tonight

Replaced CP8 fuses to fix LLCV actuator after discovering actuator not responding to manual stroke.

No fuse LED indicator lights were lit at vacuum rack in EX VEA, so I needed to use cell phone while laser locked (sorry!) to text Kyle for wiring diagram locations. I replaced both fuses. Old fuses test good. Guessing that during actuator modification on Tuesday when fuses were pulled and plugged back in there was a bad connection.

TITLE: 02/24 Day Shift: 16:00-00:00 UTC (08:00-16:00 PST), all times posted in UTC
STATE of H1: Observing at 67Mpc
INCOMING OPERATOR: Cheryl
SHIFT SUMMARY: One lock loss that was coincident with an earthquake, but I'm not sure if that was the cause or not. Using the lockloss tool i looked at different SEI and ASC channels, and there is an earthquake seen, but not nearly as big as other ones that I've seen us ride through. Relocked with no issues, but our range does seem to be trending down. Chandra had to replace a fuse for CP8 at EX which is in the VEA. I left us in Observing incase she was quiet enough, but hopefully DetChar can check to make sure.
LOG:

• 17:55 Kyle to MY
• 18:27 Kyle back, but leaving again with a tape measure
• 18:56 Kyle back
• 21:30 Fil, Alfredo, Elizabeth running cables from the server room to the valve room in the OSB.
• 21:39 Jason to MY
• 22:55 Chandra to EX to look at CP8
• 23:15 Chandra headed back, but then will be returning to replace a fuse in the EX VEA. This is necessary to keep CP8 from overfilling overnight.
• 23:26 Jason back
• 23:51 Chandra entering EX VEA to swap out a fuse.
• 00:07 Chandra out. She used her phone while in the VEA, I imagine that this may show up in the data so I am tagging DetChar since I left it in Observing. BRS didn't even notice her, and the BLRMS only show a slight sign of someone in there.