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ID Date Author Type Category Subjectup Text Attachments
  10743   Mon Dec 1 17:43:22 2014 JenneUpdateLSCReset Yarm trans normalizationAfter Koji and I reset the transmission
normalizations last Friday, he did some alignment
work that increased the Yarm power. 
  
  1021   Thu Oct 2 18:56:19 2008 ranaSummarySUSResistivity of Suspension WireBob and Steve measured the resistance of the
suspension wire today:
  
  888   Tue Aug 26 18:19:16 2008 ranaOmnistructureElectronicsResistor Noise at the 40mAs Stefan points out in his recent ISS ilog
entries at LLO, Daniel [COLOR=darkgreen]Sigg
recently wrote a
 SEI-RN_RNM.pdf 
  37   Wed Oct 31 09:45:28 2007 waldmanOtherOMCResolution to DAQland saga[Jay, Sam]

We did a rough accounting for the linear
  
  8054   Mon Feb 11 12:49:54 2013 JenneSummaryLSCResonant freq change - why? (and passive TT mode freqs)

    

       
            
  
  16914   Tue Jun 14 19:34:06 2022 yutaUpdateSUSResonant frequency identification from the free swing test[JC, Anchal, Yuta]

We are working on resonant frequency
idendification from the free swing test done
 7x 
  4495   Wed Apr 6 22:13:24 2011 BryanConfigurationGreen LockingResonating green light!Every so often things just work out. You
do the calculations, you put the lenses on
the bench, you manually adjust the pointing
  
  10278   Sat Jul 26 14:45:33 2014 GabrieleMetaphysicsASCResponse of POP QPD Koji asked me to perform a simulation
of the response of POP QPD DC signal to mirror
motions, as a function of the CARM offset.
 pop_qpd_all.pngpop_qpd_carrier.pngpop_qpd_sb.pngfoldeddoublecavity.mistpop_qpd.m 
  10888   Tue Jan 13 01:11:51 2015 diegoUpdateLSCResponse of error signals to MICH EXCFor several MICH offsets, I measured the
response of REFL33Q, ASDC and the ratio ASDC/POPDC
to a MICH EXC. It appears that there is no
 MICH_to_REFL33Q_ASDC_12Jan2015_1.pdfMICH_to_REFL33Q_ASDC_12Jan2015_2.pdfMICH_to_REFL33Q_ASDC_12Jan2015_3.pdf 
  585   Fri Jun 27 18:21:01 2008 JenneUpdateElectronicsResponse of the LO input on the MC demod boardThe alarm handler has been flipping out saying
that the LO input of the MC's demod board
is too low, so at Rana's suggestion, Eric
  
  275   Sat Jan 26 18:48:43 2008 JohnSummaryComputersRestart iscepicsiscepics died this afternoon. We restarted
it and restored settings from yesterday.
I've written up instructions in the wiki.
  
  5396   Tue Sep 13 19:04:58 2011 SureshUpdateComputer Scripts / ProgramsRestarted Frame builder several times while compiling c1ioo, c1mcs and c1rfmI restarted the frame builder at the following
times
 
  
  1564   Fri May 8 10:05:40 2009 AlanOmnistructureComputersRestarted backup since fb40m was rebootedRestarted backup since fb40m was rebooted.   
  5828   Mon Nov 7 11:50:42 2011 JenneUpdateelogRestarted elogElog restart script killed the elog, but
didn't restart it.  Restarted by hand.
  
  5829   Mon Nov 7 12:51:44 2011 ZachUpdateelogRestarted elogI've noticed that it always takes running
the script twice for it to actually work.
I think there's something wrong with how
  
  8420   Sun Apr 7 20:49:19 2013 ZachUpdateGeneralRestarted elogwith the script, as it was down.   
  8428   Tue Apr 9 01:46:40 2013 ZachUpdateGeneralRestarted elogAgain.


  
  3648   Tue Oct 5 13:46:26 2010 josephb, alexUpdateCDSRestarted fb trendingFb is now once again actually recording
trends.
A section of the daqdrc file (located
  
  667   Mon Jul 14 12:43:07 2008 JohnSummaryComputersRestarted fb40m, tpman and c1ass    
  2998   Thu May 27 08:22:57 2010 AidanUpdateComputersRestarted the elog this morning    
  4365   Tue Mar 1 08:42:18 2011 AidanUpdateelogRestarted the elog this morning The elog was dead this morning.
I reanimated it. It is now undead.
 Zombie.gif 
  4575   Wed Apr 27 20:14:16 2011 AidanSummaryelogRestarted with script ...    
  4744   Thu May 19 00:15:20 2011 JenneUpdateelogRestarted, Italian-styleAka, from a hotel in Pisa.   
  4745   Thu May 19 00:22:21 2011 ranaUpdateelogRestarted, Italian-style

    
        
  
  10080   Fri Jun 20 11:43:30 2014 ericqUpdateComputer Scripts / ProgramsRestarting ELOGManasa let me know that the ELOG was down,
and that she used the normal restart procedure,
but then all entries were gone. 
  
  15995   Mon Apr 5 08:25:59 2021 Anchal, PacoUpdateGeneralRestore MC from early quakes[Paco, Anchal]

Came in a little bit after 8 and
found the MC unlocked and struggling to lock
  
  1464   Thu Apr 9 20:56:12 2009 YoichiHowToGeneralRestore the alignment. Write elog entries.I often find that the mirrors are left mis-aligned
(like in X-arm mode) when I come in for the
locking, including tonight.
  
  16238   Tue Jul 6 10:47:07 2021 Paco, AnchalUpdateIOORestored MCMC was unlocked and struggling to recover
this morning due to misguided WFS offsets.
In order to recover from this kind of issue,
  
  16239   Tue Jul 6 16:35:04 2021 Anchal, Paco, GautamUpdateIOORestored MCWe found that megatron is unable to properly
run scripts/MC/WFS/mcwfsoff and scripts/MC/WFS/mcwfson
scripts. It fails cdsutils commands due to
  
  16816   Thu Apr 28 09:12:18 2022 AnchalUpdateBHDRestoring arm alignmentThis would be a daily first task in the
morning. We'll need to check the status
of arm alignment and optimize it back to
  
  16819   Thu Apr 28 18:07:04 2022 AnchalUpdateBHDRestoring arm alignment at EODRestored arm algiment to get 0.8 max flashing
on YARM and 1 max flashing on XARM. I had
to move input alignment using TT2-PR3 pair
  
  12138   Fri May 27 02:52:53 2016 ericqUpdateLSCRestoring high BW single arm controlI've been futzing with the common mode
servo, trying to engage the AO path with
POY for high bandwidth control of a single
  
  209   Thu Dec 20 21:58:28 2007 AndreySummaryComputer Scripts / ProgramsResults for 2 previous XARM measurements have been added
I attached results (plots) of yesterday's
daytime and overnight measurements to the
  
  199   Tue Dec 18 23:41:00 2007 AndreySummaryComputer Scripts / ProgramsResults of Mon/Tue overnight measurements (entry #194)
Here I inform our community about the results
of the measurements of RMS values in XARM
 12x 
  195   Tue Dec 18 00:51:39 2007 AndreyUpdateComputer Scripts / ProgramsResults of Saturday overnight measurements
As I indicated in the previous e-log entry
(#194), I made overnight measurements in
 11x 
  202   Wed Dec 19 16:07:37 2007 AndreySummaryComputer Scripts / ProgramsResults of overnight measurements Tue/Wed night (entry #198)
As indicated in ELOG entry 198, I was making
[COLOR=red]overnight measurements during
 11x 
  15268   Thu Mar 12 01:33:21 2020 gautamUpdateLSCResuming locking activitiesIt's been a while since I've attempted
any locking, so tonight was mostly getting
the various subsystems back together.
 ExcessFreqNoise_LSC.pdf 
  3191   Mon Jul 12 02:21:01 2010 KojiConfigurationASCResurrection of MC WFSI have resurrected the MC WFS on Friday
night.
I have uncommented the WFS part of
  
  4697   Thu May 12 00:59:45 2011 ryan, ranaUpdatePSLReturn of the PSL temperature boxThe PSL temperature box has returned to
service, with some circuit modifications.
The 1k resistors on all the temp. sensor
  
  5071   Sat Jul 30 19:06:25 2011 ryan, ranaUpdatePSLReturn of the PSL temperature box


   
        
            
 rctempbox.png 
  310   Tue Feb 12 13:53:27 2008 robOmnistructureVACReturn of the RGA
The new RGA head was installed a few days
ago.  I just ran the [B]RGAlogger[/B] script
 RGA-080212.png 
  9939   Fri May 9 21:18:51 2014 KojiUpdateGreen LockingReverted X green light power It is actually very tricky to measure the
green power at the output of the doubling
crystal as the IR often leaks into the measurement.
  
  3468   Wed Aug 25 12:40:28 2010 josephbUpdateelogReverted back to 2.7.5 until further testing is doneSo apparently the themes/configurations
didn't work so nicely on some of the logbooks
with 2.8.0, so I'm reverting to 2.7.5 until
  
  7053   Mon Jul 30 17:24:45 2012 YaakovUpdateSTACISRevised sensor noise plot; dead PZTThe geophone noise in my last eLog was
taken before
any amplification of the signal, but
 sensor_noise.bmpsensor_noise.bmpsensor_noise.fig 
  13391   Wed Oct 18 15:26:58 2017 johannesHowToCamerasRevision: CCD calibrationThe units were still off in my previous
post. Here's the corrected, sanity-checked
version:
 calib_20170930_152.pdfcalib_20170930_153.pdf 
  12535   Thu Oct 6 03:56:43 2016 ericqUpdateLSCRevival Attempt[ericq, Gautam, Lydia]

We spent some time tonight trying
to revive the PRFPMI. (Why PR instead of
  
  12547   Tue Oct 11 02:48:43 2016 ericqUpdateLSCRevival AttemptsStill no luck relocking, but got a little
further. I disabled the output of the problematic
PRM OSEM, it seems to work ok. Looking at
  
  14051   Wed Jul 11 15:57:00 2018 aaronUpdateOMCReviving OMC electronicsGautam showed me the electronics racks
for the OMC PZTs and DAQ. I'm in the
process of chasing down what channels we
  
  11482   Thu Aug 6 04:36:41 2015 ericqUpdateASCReviving PRC angular feedforwardTonight, I've taken a bunch of data
where the PRC is carrier locked and the ITM
oplevs have the DC coupling FM turned on,
  
  14816   Mon Jul 29 19:08:55 2019 yehonathanUpdateLoss MeasurementReviving loss measurement by reflection1. X arm is totally misaligned in order
to measure the Y arm loss using the reflection
method. Each measurement round consists of
  
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