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ID Date Author Type Category Subjectup Text Attachments
  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
  
  14664   Tue Jun 11 19:25:58 2019 aaronConfigurationBHDReviving the single OMC BHD design?I drew out some idea of how we might
use a single OMC to clean both paths of the
BHD after mixing, without being susceptible
 singleOMC.pdf 
  14685   Fri Jun 21 19:22:40 2019 KojiConfigurationBHDReviving the single OMC BHD design?I think a Faraday rotator rotates the polarizations
in a same way for both forward and backward
beam, and it's not like in this figure.
  
  9565   Wed Jan 22 15:24:11 2014 SteveSummaryVACRga scan after reboot

    

       
            
 Rgascan169dwarmingup.pngBlankMedmMustBeFixed.png 
  15933   Wed Mar 17 15:04:20 2021 gautamUpdateElectronicsRibbon cable for chassisI had asked Chub to order 100ft ea of 9,
15 and 25 conductor ribbon cable. These arrived
today and are stored in the VEA alongside
 IMG_9139.jpg 
  10091   Tue Jun 24 13:02:54 2014 ManasaUpdatePSLRingdown PD installed

    

       
            
 PSL_ringdown.png 
  7164   Mon Aug 13 19:29:10 2012 ManasaSummary Ringdown measurementsI tried to make ringdown measurements at
the IMC using the DC falling edge as the
trigger. Input to the MC was switched off
  
  7196   Wed Aug 15 17:17:58 2012 Manasa, JanUpdateIOORingdown measurementsFinally ringdown at IMC conquered and oopsie
that came out so clean!
The finesse of the cavity from the
 Ringdown_815.jpg 
  7199   Wed Aug 15 20:15:51 2012 JanUpdateIOORingdown measurements
  
  7200   Wed Aug 15 20:53:48 2012 ManasaUpdateIOORingdown measurements

    

       
            
  
  15132   Fri Jan 17 22:11:19 2020 YehonathanUpdatePSLRingdown measurementsI prepare for the ringdown measurement
of the PMC according to Gautam's previous
experiments.
 20200117_192455.jpg20200117_192448.jpg 
  15154   Sat Jan 25 11:54:42 2020 YehonathanUpdatePSLRingdown measurementsZero
order beam PMC ringdown

On Wednesday I installed 3
 Input_beam_path.jpgReflected_Beam_Path.jpgTransmitted_Beam_Path.jpgPMCRingdownNormalizedRawdata.pdfTransPDFits.pdf 
  15160   Mon Jan 27 21:35:06 2020 YehonathanUpdatePSLRingdown measurementsZeroth
order IMC ringdown setup

Following
 IMC_REFL_Beam_Path.jpg 
  15161   Mon Jan 27 21:48:49 2020 gautamUpdatePSLRingdown measurementsIt's fine to block the WFS while doing
ringdowns 
 elevatedSeis.pdf 
  10042   Mon Jun 16 12:58:50 2014 manasaSummaryIOORingdown recap A recap of the ringdown measurements made
at the 40m in mid 2012, the hardware that
was installed for the same and results from
 Ringdown_815.pdfMCringdown_cum.pdfcum_plot.png 
  10043   Mon Jun 16 15:32:12 2014 ranaSummaryIOORingdown recap  
To do this better:
1) Just step the analog input
  
  7883   Tue Jan 8 17:54:34 2013 JenneUpdateAlignmentRisers to bring TTs to correct beam height are in use 
 [Jenne, EricQ, Nic, MattA]
* TT1 is in place, aligned so beam
  
  7878   Mon Jan 7 16:45:30 2013 JenneUpdateAlignmentRisers to bring TTs to correct beam height are wrong[Jenne, with backup from Koji and Steve]
Short version:
TT1 was installed without a riser,
 SR3_7Jan2013_ExtraHoleMachinedAtCorner.JPGTT1_7Jan2013_BasePlateAndRiserHoleMismatch.JPG 
  2014   Mon Sep 28 23:13:14 2009 JenneConfigurationElectronicsRob is breaking stuff....Koji and I were looking for an extender
card to aid with MZ board testing. 
Rob went off on a quest to find one. 
  
  2019   Tue Sep 29 16:14:44 2009 robConfigurationElectronicsRob is breaking stuff....


   
        
            
  
  2489   Fri Jan 8 18:20:12 2010 steveMetaphysicsTreasureRob now can concentrate on his thesisWe are celebrating Rob's promotion to thesis
poetry.  These pictures were taken on
December 9, 2009
 rob2.JPGrob3.JPGrob1.JPG 
  51   Thu Nov 1 19:53:34 2007 Andrey RodionovBureaucracyPhotosRobert's photo   DSC_0068.JPG 
  6975   Fri Jul 13 19:48:56 2012 JenneUpdateEnvironmentRocks - very loudI assume it's the rock tumbler, although
it could be something else, but the MC has
had trouble staying locked yesterday and
  
  15765   Thu Jan 14 12:32:28 2021 gautamUpdateCDSRogue master may be doing something good?I think the "Rogue
Master" setting on the RFM network
may be doing some good. 5 mins, ago, all
 Screenshot_2021-01-14_12-35-52.png 
  419   Tue Apr 15 18:44:25 2008 ranaConfigurationComputersRosalbaThere is a new computer in the control room
-- its called [B][COLOR=purple]Rosalba[/COLOR][/B],
in keeping with our naming convention. Its
  
  421   Wed Apr 16 10:20:01 2008 AndreyUpdateComputersRosalba and linux3[quote]There is a new computer in the control
room -- its called [B][COLOR=purple]Rosalba[/COLOR][/B],
in keeping with our naming convention. Its
  
  6237   Mon Jan 30 16:18:51 2012 steveUpdatePEMRoscolux colored film transmittance at 1064 nm 
 Roscolux filter films 
#74 night blue,  0.003" thick 
  
  10605   Tue Oct 14 17:38:31 2014 ericqUpdateComputer Scripts / ProgramsRossa and Allegra wiped, Ubuntu 12.04 installedWhen I came in, Rossa was booted to Ubuntu
10. I tried rebooting to select 12, but couldn't
ever successfully boot again. Since Diego
  
  10606   Tue Oct 14 23:44:42 2014 diegoUpdateComputer Scripts / ProgramsRossa and Allegra wiped, Ubuntu 12.04 installedAllegra and Rossa wiped and updated to
Ubuntu 12.04.5 by me and Ericq; the following
procedure was followed:
  
  8643   Fri May 24 14:44:34 2013 JenneUpdateGeneralRossa freezes all the timeI am getting tired of having to restart
Rossa all the time.  She freezes almost
once per day now.  Jamie has looked
  
  10045   Mon Jun 16 21:22:16 2014 JenneUpdateComputer Scripts / ProgramsRossa having a bad day[Jenne, Rana]
Today, Rossa has been hanging at
bootup.  You get the desktop, and most
  
  10063   Wed Jun 18 19:30:28 2014 JenneUpdateComputer Scripts / ProgramsRossa having a better dayI have modified the /etc/default/grub
file, so that we're loading up
  
  10540   Thu Sep 25 15:41:15 2014 ericqUpdateComputer Scripts / ProgramsRossa having a better day 
I think I found out why rossa was
mad. 
  
  2229   Tue Nov 10 19:19:57 2009 AlbertoUpdateABSLRotated polarizer on the PSL table, along the MC input pick off beam Aligning the beam for the PLL of the AbsL
Experiement I rotated the polarizer along
the path of the MC Input pick off beam (=
  
  5541   Sat Sep 24 20:14:36 2011 KojiUpdateLSCRough estimation of the PR gain 
POXDC (i.e. POY DCout) 
PRM misaligned: 70cnt
  
  7564   Wed Oct 17 08:04:31 2012 SteveUpdateVACRoughing pumps on for oil changePR1, PR2 and RP3 turned on for warming
up for oil change. Oil changed with 3.2L
of  MVT-19
  
  7597   Tue Oct 23 16:18:03 2012 SteveUpdateVACRoughing pumps on for oil change

    

       
            
 oilchange.jpg 
  4901   Tue Jun 28 16:52:37 2011 SonaliUpdateGreen LockingRouting of fibre to PSL complete.1. Suresh and I completed the alignment
of the fibre and the three mirrors on the
ETMY table.
 coupled_fibre.jpgthe_fibre_route.jpgETMY_aftr_fibre_coupling2.png 
  3398   Wed Aug 11 12:58:56 2010 JennaUpdateElectronicsRubidium clock phase noiseI took some measurements of the clock this
morning, first without the box, then with
the box, then without the box again. All
 08_11_Rb_crazybox.pdf08_11_Rb_comparison.pdf 
  3400   Wed Aug 11 15:27:16 2010 JennaUpdateElectronicsRubidium clock phase noiseWe unsynched the clocks by unhooking the
1pps locking. I've added it to the plot of
the other measurements here, and we've divided
 08_11_Rb_withspec.pdf 
  3402   Wed Aug 11 16:38:02 2010 JennaUpdateElectronicsRubidium clock phase noise


   
        
            
  
  3423   Fri Aug 13 20:58:20 2010 JennaSummaryElectronicsRubidium clock phase noise measurement Here's an overview of the rubidium
measurement:
 6x 
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