aLIGO LHO Logbook

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Reports until 11:29, Monday 20 March 2017

H1 General (PEM, SEI)

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thomas.shaffer@LIGO.ORG - posted 11:29, Monday 20 March 2017 - last comment - 15:46, Monday 20 March 2017(34944)

More on the mystery noise seen this morning

This morning I saw some noise in the 60-200Hz area on DARM that lastest for a few minutes and then went away. I came back about an hour later, and an hour after that as well. The SEI BLRMS are clearly coincident with this breathing noise, and with the slight drop in range. Robert is thinking this may be tilling or truck traffic on the Hanford site.

I attached a plot of some of the BLRMS. It is seem the most in the corner station, but the ends see it a bit as well.

Images attached to this report

Comments related to this report

thomas.shaffer@LIGO.ORG - 15:46, Monday 20 March 2017 (34955)

Robert and I watched with the roof camera and saw that there are about 5 large trucks that will pass the site on Route 10 within a few minutes of each other. The trucks are the kind that haul dirt/gravel/rocks and have two trailers (excuse my lack of truck terminology there). As these trucks pass, noise is DARM is clearly seen, and in the 3-10 and 10-30Hz SEI BLRMS as well. This much ground motion caused by trucks is abnormal, and we are hoping that it was a only for today. Our range has definitely seen this ground motion and it is show as going from 48-68Mpc for the last 3 hours, and is also seem in the previous lock ending around 16UTC. I attached a 24hr trend of some of the SEI BRLMS and range attached.

While I was watching for trucks to go by, I also saw a FedEx delivery truck show up on site. As this truck made the turn from Route 10 onto our driveway, it raised DARM similarly like the above trucks. On the straight the noise dropped, then the turn toward the LSB it rose again, and finally it had to backup and the noise popped back up.

Images attached to this comment

H1 PSL (PSL)

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nutsinee.kijbunchoo@LIGO.ORG - posted 11:24, Monday 20 March 2017 (34943)

Weekly PSL Status Report

Laser Status: SysStat is good

Front End Power is 34.12W (should be around 30 W)

HPO Output Power is 163.8W

Front End Watch is GREEN

HPO Watch is GREEN

PMC: It has been locked 5 days, 21 hr 27 minutes (should be days/weeks)

Reflected power = 16.03Watts

Transmitted power = 64.35Watts

PowerSum = 80.38Watts.

FSS: It has been locked for 0 days 0 hr and 45 min (should be days/weeks)

TPD[V] = 3.319V (min 0.9V)

ISS: The diffracted power is around 2.0% (should be 3-5%)

Last saturation event was 0 days 0 hours and 45 minutes ago (should be days/weeks)

Possible Issues:

H1 SEI

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hugh.radkins@LIGO.ORG - posted 10:37, Monday 20 March 2017 (34942)

Site SEI Performance Medm

Our good friend Arnaud made an medm showing the BLRMS motion of all the ISI platforms:

"I made a medm screen to show the performance from all platforms at once.

This should help when trying to catch a problem like we had last month with elevated HAM6 motion (https://alog.ligo-la.caltech.edu/aLOG/index.php?callRep=31831)

The file lives under the svn at /opt/rtcds/userapps/release/isi/common/medm/graphics/grid_all.adl (or grid_mini.adl, a smaller version).

and only needs the site/ifo variable as an input (which the sitemap should provide).

At LLO it is currently under sitemap->ISI->PERF_OVERVIEW"

These BLRMS performance views are all visible on the ISI platform overview screen but having them on one screen should be useful. I've updated the H1 area with this file and edited the SITEMAP.adl; LHO Operators can find it in the MAIN area under the SEI pulldown at PERF_OVERVIEW.

Remember green is good, red is bad, yellow and orange in between. See attached.

Images attached to this report

H1 CDS (DAQ)

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david.barker@LIGO.ORG - posted 10:07, Monday 20 March 2017 (34941)

CDS O2 restart report, Tuesday 14th - Sunday 19th March 2017

model restarts logged for Sun 19/Mar/2017 - Tue 14/Mar/2017 No restarts reported.

LHO General

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thomas.shaffer@LIGO.ORG - posted 09:46, Monday 20 March 2017 (34940)

Morning Meeting Minutes

Ran well over the weekend.

Went over maintenance items for tomorrow (see whiteboard for plans).

There are also a few commissioning, calibration, and PEM items that will require time with a locked IFO either tomorrow or over the week.

H1 General

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thomas.shaffer@LIGO.ORG - posted 09:40, Monday 20 March 2017 - last comment - 11:31, Monday 20 March 2017(34939)

Lockloss @ 16:38UTC

not sure of the cause yet. The 60-200Hz noise came back a few times before the lock loss, maybe related?

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thomas.shaffer@LIGO.ORG - 11:31, Monday 20 March 2017 (34945)

Back to observing after getting to low noise and losing lock to an unheard PI, and then a brief period of comissioning when we were back up again.

H1 PSL

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peter.king@LIGO.ORG - posted 09:28, Monday 20 March 2017 (34938)

Adjusted PSL Beckhoff computer time

Adjusted the PSL Beckhoff computer time to daylight savings.  The clock was about 10 minutes off in
addition to the hour.

H1 SEI

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thomas.shaffer@LIGO.ORG - posted 08:39, Monday 20 March 2017 - last comment - 14:27, Tuesday 21 March 2017(34936)

HEPI Pump Pressure 45 Day Trends

EX had a dip in pressure around March 9th from 97.7 to 97.5, but other than that all looks good.

Images attached to this report

Comments related to this report

thomas.shaffer@LIGO.ORG - 08:41, Monday 20 March 2017 (34937)

I forgot to link to FAMIS4530

Closed

david.barker@LIGO.ORG - 17:23, Monday 20 March 2017 (34957)

Looking over the past week, the daily EY gliches are at 20:44 PDT (03:44 UTC). On Saturdays a second glitch occurs at 21:04 PDT (04:04 UTC). Attached plots show 03:25 to 04:10 UTC for 3/19 and 3/12 (two successive saturday evenings in local time).

Images attached to this comment

hugh.radkins@LIGO.ORG - 14:27, Tuesday 21 March 2017 (34975)

Here are data from End Y with most of the pressure channels and the controller output to the pump motor.

The attached plot gives support to this argument:

Something is happening with either the Pump motor or the VFD causing an increase in pressure out from the pump. This is evident by the increasing delay in pressure response as we proceed down the Pump Station Manifold. PRESS1 is the first after the Pump, the rest are after Laminar flow resistors and the filter. BSCSUP_PRESS is way down the line at the Chamber. The PRESS1 clearly leads the down stream pressures and it steps more sharply than the others. So this is a real pressure change increasingly softened by the accumulators and resistors etc as the wave moves down the line.

The VOUT signal is the PID loop responding to the differential pressure (diff between BSCSUP and BSCRET[not shown].) There is a big step down on this channel just before the pressure step up but that wouldn't cause an increase in pressure. So, I don't believe the motor is being directed to drive harder.

I'll look over the VFD manual to see if it has any scheduled items that might cause this? That just hardly makes sense...

Edit--Extra--If the output voltage of the PID controller could actually be manipulated without the VOUT data signal registering it, that too would be a possibility...Dave is looking closer at the computer.

Images attached to this comment

LHO General

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thomas.shaffer@LIGO.ORG - posted 08:15, Monday 20 March 2017 (34934)

Ops Day Shift Transition

TITLE: 03/20 Day Shift: 15:00-23:00 UTC (08:00-16:00 PST), all times posted in UTC
STATE of H1: Observing at 67Mpc
OUTGOING OPERATOR: Corey
CURRENT ENVIRONMENT:
    Wind: 12mph Gusts, 9mph 5min avg
    Primary useism: 0.05 μm/s
    Secondary useism: 0.16 μm/s
QUICK SUMMARY: A few min after I walked in there was some elevated noise in DARM from about 60-200Hz that lasted for a little less than 10min. The seismic BRLMS from 3-30Hz show a large amount of motion around then, but that may just be everyone arriving on site. The noise seems to have gone away for now, but I'll have to keep a close eye on it.

LHO General

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corey.gray@LIGO.ORG - posted 08:02, Monday 20 March 2017 (34933)

OWL Operator Summary

TITLE: 03/20 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: TJ
SHIFT SUMMARY:

Nice quiet shift with H1 locked over 38hrs. Winds are hovering around 10mph.
LOG:

Rebooted video4 in the middle of the night.

LHO General

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corey.gray@LIGO.ORG - posted 00:05, Monday 20 March 2017 (34932)

Transition To OWL

TITLE: 03/20 Owl Shift: 07:00-15:00 UTC (00:00-08:00 PST), all times posted in UTC
STATE of H1: Observing at 64Mpc
OUTGOING OPERATOR: Patrick
CURRENT ENVIRONMENT:
    Wind: 11mph Gusts, 10mph 5min avg
    Primary useism: 0.02 μm/s
    Secondary useism: 0.16 μm/s

Fairly quiet looking night so far. The winds look like they have been slightly inching up over last 3hrs (still at a calm ~10mph)
QUICK SUMMARY:

H1 currently locked over 30hrs.

LHO General

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patrick.thomas@LIGO.ORG - posted 00:01, Monday 20 March 2017 (34931)

Ops Eve Shift Summary

TITLE: 03/19 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: Corey
SHIFT SUMMARY: PI mode 23 glitched a couple times. No other issues. Observing entire shift.

LHO General

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patrick.thomas@LIGO.ORG - posted 20:01, Sunday 19 March 2017 (34930)

Ops Eve Mid Shift Summary

Have remained in observing. No changes in status or issues to report.

LHO General

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patrick.thomas@LIGO.ORG - posted 16:02, Sunday 19 March 2017 (34929)

Ops Eve Shift Transition

TITLE: 03/19 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: Travis
CURRENT ENVIRONMENT:
    Wind: 6mph Gusts, 5mph 5min avg
    Primary useism: 0.02 μm/s
    Secondary useism: 0.18 μm/s 
QUICK SUMMARY:

No issues to report.

H1 General

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travis.sadecki@LIGO.ORG - posted 16:00, Sunday 19 March 2017 (34928)

Ops Day Shift Summary

TITLE: 03/19 Day Shift: 15:00-23:00 UTC (08:00-16:00 PST), all times posted in UTC
STATE of H1: Observing at 67Mpc
INCOMING OPERATOR: Patrick
SHIFT SUMMARY: Observing for the entire shift and 22+ hours total for this lock. Rode through a 6.0 EQ in Solomon Islands early in the shift. No issues to report.
LOG: None

H1 SEI

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travis.sadecki@LIGO.ORG - posted 14:39, Sunday 19 March 2017 (34927)

Earthquake EQ Report

6.0M Auki, Solomon Islands

Was it reported by Terramon, USGS, SEISMON? Yes, Yes, No

Magnitude (according to Terramon, USGS, SEISMON): 6.0, 6.0, NA

Location: 68km N of Auki, Solomon Islands; LAT: -8.1, LON: 160.7

Starting time of event (ie. when BLRMS started to increase on DMT on the wall): 15:40 UTC

Lock status? H1 stayed locked, L1 broke lock.

EQ reported by Terramon BEFORE it actually arrived? Not sure

H1 General

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travis.sadecki@LIGO.ORG - posted 12:01, Sunday 19 March 2017 (34926)

Ops Day Mid Shift Summary

Observing for 18.5 hours. No issues thus far.

H1 General

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travis.sadecki@LIGO.ORG - posted 08:00, Sunday 19 March 2017 (34925)

Ops Day Shift Transition

TITLE: 03/19 Day Shift: 15:00-23:00 UTC (08:00-16:00 PST), all times posted in UTC
STATE of H1: Observing at 66Mpc
OUTGOING OPERATOR: Ed
CURRENT ENVIRONMENT:
    Wind: 5mph Gusts, 3mph 5min avg
    Primary useism: 0.01 μm/s
    Secondary useism: 0.18 μm/s
QUICK SUMMARY: No issues were handed off.

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