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Reports until 17:22, Thursday 21 April 2016
H1 CDS (DAQ)
david.barker@LIGO.ORG - posted 17:22, Thursday 21 April 2016 (26721)
CDS NDS lookback times

Some questions about look-back times for framed data served by our internal NDS servers have been asked recently, so for the record here are the current look-back times for each type of frame

nds science frames commisioning frames second trends
nds0 02 days 04 hours 10 days 12 hours 25 days 12 hours
nds1 02 days 11 hours 10 days 21 hours 24 days 11 hours

data was obtained by the script /opt/rtcds/userapps/release/cds/h1/scripts/report_daq_framewriter_lookback_times.bsh

H1 General
jim.warner@LIGO.ORG - posted 15:54, Thursday 21 April 2016 (26719)
Shift Summary

TITLE: 04/21 Day Shift: 15:00-23:00 UTC (08:00-16:00 PST), all times posted in UTC
STATE of H1: Recovering
INCOMING OPERATOR: Travis
SHIFT SUMMARY: PSL work looks to be done, now trying to recover the IFO
LOG:

15:00 JeffB to LVEA to lock 3IFO cabinet, back 15:15
15:00 PeterK to PSL Jason at 15:45, out 17:30
15:30 JeffB and Fil to Diode room
15:45 Ed to LVEA to take a picture
16:00 JeffB to CER/Diode Room
18:30 Peter Jason to PSL, out at 20:00
22:00 Sheila to IOT1

H1 DCS (CDS, DCS)
gregory.mendell@LIGO.ORG - posted 15:19, Thursday 21 April 2016 (26717)
DCS Disk2Disk scripts have been restarted using their standard configuration, with CDS fw0's filesystem as the primary source of frame data 
I have restarted the DCS Disk2Disk scripts using their standard configuration, with CDS fw0's filesystem as the primary source of frame data and CDS fw1's filesystem as the backup source of frame data, for DCS archiving of raw (science), second-trend, and minute-trend data. (The primary and backup source of data had been switched temporarily earlier this week due to DCS maintenance.)
H1 SEI
hugh.radkins@LIGO.ORG - posted 14:12, Thursday 21 April 2016 - last comment - 17:13, Thursday 21 April 2016(26715)
Temperature Excusion at EndY and BRSY Holds on

The Temperature spike at the ENDY did give the BRS a jostle but it seems to have recovered as has the temperature.

The attached trends are 2 days of the BRSY position, velocity,  VEA temp, ground seismo Y, wind and the BRS DRIFTMON.  To me, the most interesting thing is the ring up in the BRS signals near the beginning of the traces likely related to the seismic spike seen.  I suspect this is a VEA entrance that got pretty close to the BRS (stick to the sides if you can rather than the ends of the enclosure.)  This ring up was still not quite enough to trigger the damping so no too bad and you can see how long it takes to ring down without the capacitive damping.

Also, late in the trends, one can see the winds start to pick up and it kicked the BRS enough to trigger the damping--the velocity hit 3000.  Maybe we'll need to bump up the damping threshold??

Images attached to this report
Comments related to this report
krishna.venkateswara@LIGO.ORG - 17:13, Thursday 21 April 2016 (26720)
Link

Hugh, you are likely right on both counts. The ring-up was very likely a person going close to the BRS box and yes, the high threshold could be set a bit higher at 4000, to prevent trigerring the capacitive damping during wind-speeds below~35-40 mph.

The ideal solution to this problem would be if we could figure out a way to keep the damping at Q~50 without adding noise. We failed to do this during our trip (see 26596, 26465), most likely because one of the capacitors was shorted, which we realized too late. If we changed the damping scheme it may be possible to have it constantly damped. Worth thinking about more.

H1 General (CDS)
edmond.merilh@LIGO.ORG - posted 08:47, Thursday 21 April 2016 - last comment - 15:20, Thursday 21 April 2016(26712)
24VDC Power supply/rack for Safety Interlock System installed

Yesterday I installed a Sorenson power supplt into the rack I placed in the closet in the LVEA. It was connected to the fuse block and powered up. After testing for the proper voltages/polarities at the drops, power was connected to the Beckhoff interlock modules and visual confirmation of function was confirmed. The total current draw for 7 of these units, as they currently sit under power, is approximately 600µA. 

Images attached to this report
Comments related to this report
michael.zucker@LIGO.ORG - 09:16, Thursday 21 April 2016 (26713)
Link

Why are we installing a noisy switching supply in the LVEA? These Sorensons were banished for a reason...

richard.mccarthy@LIGO.ORG - 15:00, Thursday 21 April 2016 (26716)
Link 

They were not banished. Some issues were attributed to them and we removed them.  This unit powers a digital system and is far enough away from sensitive systems based on measurements done for PSL UPS on the floor.
H1 General
nutsinee.kijbunchoo@LIGO.ORG - posted 22:59, Wednesday 20 April 2016 (26706)
OPS Eve Shift Summary

All time in UTC:

00:29 Chandra to Mid X.

00:40 Chandra back

00:56 Chandra going back out.

           Chandra back shortly after.
06:00 Everybody's gone home. I'll end my log here.

 

Fewn notes:

- No commissioning tonight.

- Jamie paused DIAG_SDF Guardian node because we're not using it and it's saturating the log.

- Changed PSL RS calibration -- "Power in" changed from 56 W to 52 W (got this from last night observation), minimum angle from -25 to -23 (also from observation), min power from 1 to 0 (observation), wave number from 1 to 2 (it should have been 2 all this time).

- Added a new CO2 rotation stage graphics for my own amusement. Will likely be your amusement too once it's working.

- CP6 alarm is still going off.

Images attached to this report
LHO FMCS
john.worden@LIGO.ORG - posted 22:23, Wednesday 20 April 2016 - last comment - 23:03, Wednesday 20 April 2016(26708)
END Y temperature run away

It looks like the chilled water pump CWP1 at EY tripped off at ~5:00 pm this evening. For some reason the second chiller has not started so I have restarted the tripped water pump. Hopefully this will make it through the night.

Images attached to this report
Comments related to this report
nutsinee.kijbunchoo@LIGO.ORG - 23:03, Wednesday 20 April 2016 (26709)
Link

I only got a verbal alarm for the high EY temperature. FMC alarm handler didn't go off (I looked after I heard the verbal alarm so I thought the high EY temp was part of the daily temp fluctuation and didn't think to look further). This is not very good.

H1 CDS (CDS, VE)
patrick.thomas@LIGO.ORG - posted 18:19, Wednesday 20 April 2016 (26705)
Sitemap VE menu updated 
I put back the links to the old screens and added links to the new Beckhoff screens.
H1 CDS (CDS, VE)
patrick.thomas@LIGO.ORG - posted 18:15, Wednesday 20 April 2016 (26703)
Control room ve alarm handler updated 
I have updated the control room alarm handler configuration file to match the move to Beckhfoff controls at MX and MR. The alarm handler has been restarted to use it.

The configuration file is '/opt/rtcds/userapps/release/cds/h1/alarmfiles/ve.alhConfig'. It is in svn at 'cds_user_apps/trunk/cds/h1/alarmfiles/ve.alhConfig'.
LHO VE
chandra.romel@LIGO.ORG - posted 17:52, Wednesday 20 April 2016 - last comment - 02:43, Thursday 21 April 2016(26701)
CP6 below 100% full 
After 15 hrs, CP6 finally registers a real value on the liquid level read back. Currently at 98.5%. I opened the Dewar valve and set the LLCV to 55% (normally runs between 60-65%). I'll be here for a while working on CAD drawings so I'll monitor it.
Comments related to this report
chandra.romel@LIGO.ORG - 18:14, Wednesday 20 April 2016 (26702)
Link 

Magnehelic reads a hair over 40 in. H20 (maybe 40.4?) when liquid level reads back 97.8%. Ratios match what we expect!
chandra.romel@LIGO.ORG - 18:16, Wednesday 20 April 2016 (26704)
Link 

Raised LLCV to 57%.
chandra.romel@LIGO.ORG - 21:32, Wednesday 20 April 2016 (26707)
Link 

Raised level to 60% valve open (liquid level reads 85.7%).
Images attached to this comment
chandra.romel@LIGO.ORG - 23:42, Wednesday 20 April 2016 (26710)
Link 

I was going to manually fill CP6 a bit before I left, but the bypass valve is frozen shut. Liquid level is 80.5% in the red, but LLCV is set to its normal value of 60%. Should be good and ready for some Beckhoff PID action in the morning.
kyle.ryan@LIGO.ORG - 02:43, Thursday 21 April 2016 (26711)
Link 

75% @ 0240 hrs. local
H1 CDS (VE)
david.barker@LIGO.ORG - posted 17:37, Wednesday 20 April 2016 (26700)
MR vacuum upgrade to Beckhoff work

Today I modified CDS to use the new Beckhoff MR vacuum controls channel names. I verifed that my procedures for this are correct. Procedures are in the wiki page:

https://lhocds.ligo-wa.caltech.edu/wiki/MigratingVacuumControlsCdsFromVmeToBeckhoff

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