40m QIL Cryo_Lab CTN SUS_Lab TCS_Lab OMC_Lab CRIME_Lab FEA ENG_Labs OptContFac Mariner WBEEShop
  40m Log, Page 39 of 344  Not logged in ELOG logo
ID Date Author Type Category Subjectup Text Attachments
  14616   Fri May 17 10:12:07 2019 AnjaliSummaryEquipment loanBorrowed componentI borrowed one Marconi (2023 B) from
40 m lab to QIL lab.
  
  14618   Fri May 17 16:07:25 2019 gautamSummaryEquipment loanBorrowed componentZHL-3A (2 units) —-> QIL




  
  17233   Mon Nov 7 12:37:26 2022 KojiUpdateGeneralBorrowed the fiber tester for the OMC labI am borrowing the fiber illuminator /
fiber tester / VisiFault for the OMC lab.
It has been stored in the top drawer at the
 PXL_20221107_202016688.MP.jpg 
  5054   Thu Jul 28 16:10:34 2011 kiwamuUpdateLSCBoth arm locked[Nicole / Jamie / Rana / Kiwamu]
  The X arm and Y arm have been
locked.
  
  9199   Thu Oct 3 22:14:06 2013 MasayukiUpdateGreen LockingBoth arms ALS stabilized for IR resonance[Manasa, Masayuki]
We
 ALS_XY_inloop.pdf 
  16888   Fri Jun 3 15:22:51 2022 yutaUpdateLSCBoth arms locked with POY/POX, IR beam centered on TMs with ASS[JC, Paco, Yuta]

We locked both Y and X arms with POY11
 IRBeamsOnTMs.JPGScreenshot_2022-06-03_15-03-51.png 
  11018   Thu Feb 12 23:40:12 2015 ranaUpdateIOOBounce / Roll stopband filters added to MC ASC filter banks   59.png 
  10930   Thu Jan 22 15:35:41 2015 diegoUpdateSUSBounce/Roll MeasurementsI measured the bounce/roll frequencies
for all the optics, and updated the Mechanical
Resonances wiki page accordingly.
 BR_Jan2015.tar.bz2 
  16652   Wed Feb 9 11:56:24 2022 AnchalUpdateGeneralBringing back CDS[Anchal, Paco]

Bringing back CDS took a lot of
work yesterday. I'm gonna try to summarize
 Screenshot_2022-02-09_12-11-33.png 
  16653   Wed Feb 9 13:55:05 2022 KojiUpdateGeneralBringing back CDSGreat recovery work and cleaning of the
rebooting process.

I'm just curious: Did you observe
  
  2708   Wed Mar 24 12:38:17 2010 HartmutConfigurationGreen LockingBroadband PD for green PLLModified one of the PD assemblies carrying
a large SI-Diode (~10mm diameter).
Removed elements used for resonant
 SiAmpl.pngSiPhase.png 
  5470   Mon Sep 19 21:19:25 2011 KatrinUpdateGreen LockingBroadband photodiode characterizationAnother Hamasutu S3399 photodiode was tested
with the electronic circuit as described
in LIGO-D-1002969-v.
 current_noise_S3399.pdfidet_S3399.pdfS3399_response.pdfcurrent_noise_S3399_v2.pdfidet_S3399_v2.pdf 
  878   Mon Aug 25 12:13:49 2008 JenneUpdatePSLBroken PMC Servo Board[SIZE=3]I broke the PMC servo board[/SIZE]
(on accident).
  
  5299   Wed Aug 24 17:05:11 2011 JenneUpdateSUSBroken UL magnet on ITMX

    

       
            
  
  5302   Thu Aug 25 15:20:03 2011 JenneUpdateSUSBroken UL magnet on ITMXDmass just reminded me that the usual procedure is to bake the   
  5305   Thu Aug 25 17:57:35 2011 SureshUpdateSUSBroken UL magnet on ITMX
  
  5306   Fri Aug 26 07:53:59 2011 steveUpdateSUSBroken UL magnet on ITMX

    

       
            
  
  11242   Fri Apr 24 01:16:30 2015 JenneUpdateASCBroken Xass?I ran the "off" script for the
Xarm ASS, followed by the "on"
script, and now the Xarm ASS doesn't
  
  11248   Sat Apr 25 03:32:45 2015 KojiUpdateASCBroken Xass?I spent a day to fix the XARM ASS, but
no real result. If the input of the 6th DOF
servo is turned off, the other error signals
  
  12342   Wed Jul 27 15:03:02 2016 sisyphusMetaphysicsSUSBroken wireWhile tightening the bolts on the ETMX
wire clamp, the wire broke. All four
face magnets broke off. 
 Unknown.jpeg 
  12343   Wed Jul 27 16:56:47 2016 ranaMetaphysicsSUSBroken wireFor the rest of this vent, at least, we
need to start using the EQ stops
more frequently. Whenever the
  
  2131   Wed Oct 21 17:12:30 2009 AlbertoUpdateelogBrowser context menu enabled on the Elog under HTM editing modeOn behalf of Steve and of the rest of the
not-native-English community at the 40m willing
to have their browser's spell checker working
  
  16245   Wed Jul 14 16:19:44 2021 gautamUpdateGeneralBrrrSince the repair work, the temperature
is significantly cooler. Surprisingly, even
at the vertex (to be more specific, inside
 rmTemp.pdf 
  16246   Wed Jul 14 19:21:44 2021 KojiUpdateGeneralBrrrJordan reported on Jun 18, 2021:

"HVAC tech came today, and replaced
  
  11310   Tue May 19 14:51:44 2015 ericqUpdateModern ControlBrushing up on Wiener FilteringAs part of preparing for the SURF projects
this summer, I grabbed ~50 minutes of MCL
and STS_1 data from early this morning to
 mclData.pngmclWiener.zip 
  11313   Tue May 19 17:53:38 2015 ranaUpdateModern ControlBrushing up on Wiener FilteringGood to see that misofw.m is still alive
and well. Todo:


Apply weighting to the
  
  4418   Mon Mar 21 16:31:02 2011 steveUpdateSAFETYBryan Barr received safety trainingBryan Barr is visiting us from Glasgow
for a month. He received 40m specific safety
training on Friday.
  
  15991   Fri Apr 2 14:51:20 2021 AnchalUpdateSUSBug found, need to redo the balancingLast run gave similar results as the quick
run we did earlier. The code has been unable
to strike out couplings with POS. We found
  
  10754   Thu Dec 4 02:59:05 2014 ericqUpdateLSCBump in Darm Plant[J,Q]
After some housekeeping (ASS is wonky,
alignment of X green beat was bad, tuning
 Dec4_darmbump.pdf 
  10755   Thu Dec 4 03:09:06 2014 JenneUpdateLSCBump in Darm Plant: Lockloss after measurementWe were sitting around arm powers of 6,
and that loop measurement had finished. 
I was about to go down to arm powers of 5ish,
 8x 
  4528   Fri Apr 15 02:18:50 2011 KojiUpdateLSCBunch of RF cables removedWhile Kiwamu was working on the RF cabling
at the LSC rack, I removed 80% of SMA cables
which were not connected anywhere.
  
  13899   Wed May 30 23:57:08 2018 gautamUpdatePEMBurning smell in office area / control room[koji, gautam]

We noticed quite a strong burning
smell in the office area and control room
  
  6634   Wed May 9 14:32:31 2012 JenneUpdateCDSBurt restoredDen and Alex left things not-burt restored,
and Den mentioned to me that it might need
doing.
  
  10026   Wed Jun 11 14:41:11 2014 JenneUpdateSUSBurt restored c1scxepicsETMX had default 1's for gains, 0's for
matrix elements, etc., so I did a burt restore
to May 25th, 2pm, which was a few days before
  
  4046   Mon Dec 13 17:18:47 2010 josephbUpdateCDSBurt updatesProblem:
Autoburt wouldn't
restore settings for front ends on reboot
  
  2459   Mon Dec 28 15:19:19 2009 AlbertoUpdateComputersBurtrestored to Dec 26 at 20:00Since it wasn't sure whether all the front-ends
had been restored after the bootfest, I burtrestored
everything to Dec 26 at 20:00.
  
  3555   Thu Sep 9 18:53:56 2010 AlbertoConfigurationElectronicsBusby Box, Rai's Box, SR554 in the RF cabinetI stored the Busby Box, the Rai's Box and
the SR554 preamp in the RF cabinet down the
Y arm.
  
  2286   Tue Nov 17 21:10:35 2009 ranaSummaryElectronicsBusby Low Noise Box: Photos and Upgrades   IMG_0217.JPGbusby-noise.png 
  11293   Sat May 16 20:37:09 2015 ranaHowToCDSBypassing the CDSUTILS prefix issueThe CDSUTILS package
has a feature where it substitutes in a C1
  
  11302   Mon May 18 16:56:12 2015 ericqHowToCDSBypassing the CDSUTILS prefix issue


  
  11304   Mon May 18 17:44:30 2015 ranaHowToCDSBypassing the CDSUTILS prefix issueToo weird. I undid me changes. We'll
have to make the C1: stuff work inside each
python script.
  
  8672   Tue Jun 4 17:28:09 2013 AnnalisaUpdateLSCC1:ALS-TRY_OUT filter and green progress [Annalisa, Gautam, Rana]
I made the anti-whitening filter
for the C1:ALS-TRY_OUT channel.
 green.JPGQUAD1_1054358327.mp4 
  8674   Tue Jun 4 21:50:23 2013 AnnalisaUpdateLSCC1:ALS-TRY_OUT filter and green progress 
 [Annalisa, Gautam]
 The green beam alignment has
  
  8677   Wed Jun 5 14:01:37 2013 ranaUpdateLSCC1:ALS-TRY_OUT filter and green progressThe rejected beam from this Faraday comes
out at a tiny, tiny angle and so its tough
to pick it off without clipping the main
  
  8680   Wed Jun 5 15:03:42 2013 AnnalisaUpdateLSCC1:ALS-TRY_OUT filter and green progress

    

       
            
 faraday_rejected_beam.JPG 
  4961   Tue Jul 12 10:18:05 2011 JamieUpdateCDSC1:DAQ-FB0_C1???_STATUS indicators red, restored after controller restartsYesterday I found the C1:DAQ-FB0_C1???_STATUS
lights to be red for the SUS, MCS, SCX,
  
  5006   Wed Jul 20 20:04:54 2011 JamieUpdateCDSC1:DAQ-FB0_C1XXX_STATUS sometimes unexplainably goes redI have been noticing this happening occasionally,
but I don't understand what is causing:
 status-fb-red1.png 
  5901   Tue Nov 15 23:44:44 2011 MirkoUpdateCDSC1:LSC & C1:SUS restartedEarlier this evening C1:LSC died then I
hit the DAQ reload after adding an OAF channel
to be recorded. No change to any model. Had
  
  4664   Mon May 9 12:33:40 2011 kiwamuUpdateLSCC1:LSC-TRIG_MTRX : wrong matrix sizeI found
that C1:LSC-TRIG_MTRX has a wrong matrix
  
  4665   Mon May 9 13:14:48 2011 josephbUpdateLSCC1:LSC-TRIG_MTRX : wrong matrix size[Joe,
Kiwamu]
There
  
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