aLIGO LHO Logbook

Displaying reports 49781-49800 of 83188.Go to page Start 2486 2487 2488 2489 2490 2491 2492 2493 2494 End

Reports until 00:22, Friday 24 February 2017

LHO General

Print this report.

corey.gray@LIGO.ORG - posted 00:22, Friday 24 February 2017 (34367)

Transition To OWL

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.

H1 General

Print this report.

cheryl.vorvick@LIGO.ORG - posted 00:15, Friday 24 February 2017 (34366)

Ops Eve Summary:

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

H1 General (SEI)

Print this report.

cheryl.vorvick@LIGO.ORG - posted 23:30, Thursday 23 February 2017 (34365)

BRS Drift

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.

Images attached to this report

H1 DetChar (DetChar)

Print this report.

beverly.berger@LIGO.ORG - posted 20:16, Thursday 23 February 2017 (34364)

DQ Shift: 20 Feb 2017 00:00 to 22 Feb 2017 23:59

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.

H1 IOO (DetChar, IOO)

Print this report.

cheryl.vorvick@LIGO.ORG - posted 19:22, Thursday 23 February 2017 (34360)

unplanned 32 second gap in Observe, due to diaggui excitation channels, plot suggests no actual excitation occurred:

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

Images attached to this report

LHO VE

Print this report.

kyle.ryan@LIGO.ORG - posted 18:15, Thursday 23 February 2017 - last comment - 09:18, Friday 24 February 2017(34359)

Pressure rise on Y-arm -> likely Y2-8 BT ion pump


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

Comments related to this report

chandra.romel@LIGO.ORG - 09:18, Friday 24 February 2017 (34375)

Y arm pressure trends

Images attached to this comment

H1 General

Print this report.

cheryl.vorvick@LIGO.ORG - posted 18:01, Thursday 23 February 2017 (34358)

Earthquake Report:

Earthquake: 45km E of Kaputa, Zambia

Magnitude of EQ (Terramon/USGS): 5.7/5.7
Location of EQ (Terramon/USGS): LAT: -8.5, LON: 30.1 / 8.477°S 30.072°E
Starting time of Event: ~00:45 (BLRMS), 00:48 (Terramon)
Lock Status: H1 Remained in OBSERVING
R-wave arrival: BLRMS 1:48UTC, Terramon 1:43UTC, BLRMS saw 0.4 um/s, Terramon posted 1.6 um/s
R-wave dropped and then spiked again: BLRMS 1:52UTC, BLRMS saw 0.8 um/s

LHO VE

Print this report.

chandra.romel@LIGO.ORG - posted 17:39, Thursday 23 February 2017 (34357)

CP8 fuse swap

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.

Images attached to this report

H1 General

Print this report.

cheryl.vorvick@LIGO.ORG - posted 16:53, Thursday 23 February 2017 (34355)

Ops Eve Transition:

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 15Mpc
OUTGOING OPERATOR: TJ
CURRENT ENVIRONMENT:
    Wind: 6mph Gusts, 4mph 5min avg
    Primary useism: 0.02 μm/s
    Secondary useism: 0.17 μm/s
QUICK SUMMARY:

H1 locked for 2+ hours
range trended down, then a large glitch, still locked

LHO General (DetChar)

Print this report.

thomas.shaffer@LIGO.ORG - posted 16:15, Thursday 23 February 2017 - last comment - 16:59, Thursday 23 February 2017(34346)

Ops Day Shift Summary

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.

Comments related to this report

kyle.ryan@LIGO.ORG - 16:59, Thursday 23 February 2017 (34356)

2356 hrs UTC is when Chandra had sent out a text from the VEA

H1 General

Print this report.

thomas.shaffer@LIGO.ORG - posted 14:50, Thursday 23 February 2017 (34354)

Observing @22:42UTC

The Violins and Bounce modes are still a bit high, but they are damping down. I had to accept a TCSCS diff another for SYSECATC1PLC2, IM-REFL_SERVO_INGAIN I attached a screenshot of below.

Images attached to this report

H1 General

Print this report.

thomas.shaffer@LIGO.ORG - posted 14:12, Thursday 23 February 2017 (34353)

Lockloss @ 22:04UTC

There was an earthquake at the same time as the lock loss (5.2 in Fiji) but the velocity only reached about 0.1 um/s on the 0.03-0.1 so I can't say for sure it that was the cause yet. Control signals were showing signs of a struggle for a few minutes before the lockloss.

H1 SEI

Print this report.

thomas.shaffer@LIGO.ORG - posted 14:07, Thursday 23 February 2017 (34352)

Earthquake Report: 5.0 Severnaya Zemlya, 5.2 Fiji

Severnaya Zemlya

EQ seen at:
- USGS: Listed as occurring at 20:13UTC
- SEIS BLRMS: ~20:45utc velocity of 0.08um/s (0.03-0.1Hz)
- Terramon: R-Wave arrival at 20:38UTC velocity of 1.18um/s
Magnitude: 5.0
Location: Severnaya Semlya
Lock Status: H1 & L1 rode through it.

Fiji

EQ seen at:
- USGS: Listed as occurring at 21:10UTC
- SEIS BLRMS: ~22:00utc velocity of 0.1um/s (0.03-0.1Hz)
- Terramon: R-Wave arrival at 16:02UTC velocity of 0.9um/s
Magnitude: 5.2
Lock Status: H1 Lockloss, L1 rode through it.

LHO General

Print this report.

thomas.shaffer@LIGO.ORG - posted 13:14, Thursday 23 February 2017 (34351)

Thursday 1pm site meeting

There may be some time today for some commissioning work coincident with PEM work at LLO.
SEI - Tuesday will be replacing EY STS2 with T240
CDS HW - Run a fiber from server room to valve room this afternoon.

H1 PSL (PSL)

Print this report.

patrick.thomas@LIGO.ORG - posted 11:16, Thursday 23 February 2017 (34350)

Weekly PSL Chiller Reservoir Top-Off

FAMIS 6511

Added 75 mL H2O to the crystal chiller. There were no alarms on the diode chiller. Both canister filters appeared clear.

H1 AOS (SEI, SUS)

Print this report.

thomas.shaffer@LIGO.ORG - posted 10:58, Thursday 23 February 2017 (34349)

Optical Lever 7 Day Trends

ETMY P is only one that may need recentered soon. Everything else looks good to me.

Images attached to this report

LHO General

Print this report.

corey.gray@LIGO.ORG - posted 08:52, Thursday 23 February 2017 (34340)

OWL Operator Summary

TITLE: 02/23 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: TJ
SHIFT SUMMARY:
Nice quiet shift with a couple of quakes which we drifted through no worse for wear.

LOG:

8:39 PI Mode 28 rung up. I didn't have much luck bringing it down, but it eventually came down (Mode27 rose but also went down mostly on its own).
9:09:15 Big broadband glitch observed
12:35 4.8 Tonga quake shook us a little for 4-5min (as seen on Tidal signals), but no problems.
15:45 H1 rode through a 5.6 Papua New Guinea quake.

H1 SEI

Print this report.

thomas.shaffer@LIGO.ORG - posted 08:15, Thursday 23 February 2017 (34345)

Earthquake Report: 5.6 Papua New Guinea

EQ seen at:
- USGS: Listed as occurring at 15:11UTC
- SEIS BLRMS: ~15:45utc velocity of 0.25um/s (0.03-0.1Hz)
- Terramon: R-Wave arrival at 16:02UTC velocity of 1.7um/s
Magnitude: 5.6
Location: Papua New Guinea
Start time: ~15:45UTC
Lock Status: H1 & L1 rode through it.

H1 CDS (SYS)

Print this report.

david.barker@LIGO.ORG - posted 13:03, Wednesday 22 February 2017 - last comment - 10:51, Thursday 23 February 2017(34328)

CNS-II GPS receiver at EX modified to PWM IRIG-B

I just did EX to complete the set.

Receiver was off between the times 12:32:58 and 12:41:59 PST

EX CNS-II receiver label (on bottom of unit):

model: CNSC02-C

Serial number: 404358

Options: 2

Comments related to this report

zsuzsanna.marka@LIGO.ORG - 10:51, Thursday 23 February 2017 (34348)

CNS-II IRIG-B output is correct except for a midnight bug also documented earlier at LLO (see T1700065). The CNS-II firmware will need to be updated when schedules make it possible.

fetching 1171843188 H1:CAL-PCALX_IRIGB_OUT_DQ
and plotting times around midnight Thu Feb 23 00:00:00 UTC 2017
Wed Feb 22 23:59:48 2017
Wed Feb 22 23:59:49 2017
Wed Feb 22 23:59:50 2017
Wed Feb 22 23:59:51 2017
Wed Feb 22 23:59:52 2017
Wed Feb 22 23:59:53 2017
Wed Feb 22 23:59:54 2017
Wed Feb 22 23:59:55 2017
Wed Feb 22 23:59:56 2017
Wed Feb 22 23:59:57 2017
Wed Feb 22 23:59:58 2017
Wed Feb 22 23:59:59 2017
****Wed Feb 22 00:00:02 2017****
Thu Feb 23 00:00:01 2017
Thu Feb 23 00:00:02 2017
Thu Feb 23 00:00:03 2017
Thu Feb 23 00:00:04 2017
Thu Feb 23 00:00:05 2017

Displaying reports 49781-49800 of 83188.Go to page Start 2486 2487 2488 2489 2490 2491 2492 2493 2494 End