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ID Date Author Type Category Subjectup Text Attachments
  5272   Fri Aug 19 23:41:20 2011 JennyUpdatePSLRelocking NPRO to reference cavity.

    

       
            
  
  5468   Mon Sep 19 20:56:36 2011 PaulSummarySUSRemaining SRM and ITMY OSEMs calibrations 
I've now taken data for the pitch
and yaw calibrations for the OSEMs of SRM
 SRM_PITCH_calib_curve.pngSRM_YAW_calib_curve.pngITMY_PITCH_calib_curve.pngITMY_YAW_calib_curve.png 
  16519   Fri Dec 17 12:32:35 2021 KojiUpdateSUSRemaining task for 2021Anything else? Feel free to edit this entry.

- SUS: AS1 hanging

- SUS: PR3/SR2/LO2 3/4" thick
  
  16522   Fri Dec 17 19:19:42 2021 KojiUpdateSUSRemaining task for 2021I had the fear that any mistake in the
electronics chain could have been the show
stopper.
 PXL_20211218_030145356.MP.jpg 
  16525   Sun Dec 19 07:52:51 2021 AnchalUpdateSUSRemaining task for 2021The I/O chassis reassigns the ADC and DAC
indices on every power cycle. When we moved
it, it must have changed it from the order
  
  16534   Wed Dec 22 18:16:23 2021 KojiUpdateSUSRemaining task for 2021The in-vacuum installation team has reported
that the side OSEMs of ITMX and LO1 are going
to be interfering if place LO1 at the planned
 ITMX_2016_07_21.jpgScreen_Shot_2021-12-22_at_18.03.42.png 
  2074   Fri Oct 9 03:53:56 2009 JenneUpdateAdaptive FilteringRemaking the ASSThe c1ass computer, which is now used for
the OAF system, has many remnants from the
days when it was actually used as an ASS. 
  
  11563   Thu Sep 3 00:45:25 2015 IgnacioUpdateIOORemeasured MC2 to MCL TF + Improved subtraction performanceToday, I
remeasured the transfer function for MC2
to MCL in order to improve the subtraction
 8x 
  8498   Fri Apr 26 20:43:51 2013 JenneUpdateLSCRemeasuring the Schnupp asymmetry[Jenne, Annalisa, with guidance from Koji]
We took data to remeasure the
Schnupp asymmetry, using the Valera method
  
  8528   Fri May 3 17:32:59 2013 JenneUpdateLSCRemeasuring the Schnupp asymmetryI have looked at / analyzed the Schnupp
data that Annalisa and I took last week,
as well as some more Yarm data that I took
 Xarm_SchnuppData_April2013.pngYarm_SchnuppData_April2013.png 
  1738   Mon Jul 13 15:48:05 2009 ranaOmnistructureEnvironmentRemoval of the cold air deflection device for the MOPA chillerAround 2 PM today, I removed the blue flap
which has been deflecting the cold air from
the AC down into the laser chiller.
  
  1740   Mon Jul 13 23:03:14 2009 rob, albertoOmnistructureEnvironmentRemoval of the cold air deflection device for the MOPA chiller[quote]Around 2 PM today, I removed the blue
flap which has been deflecting the cold air
from the AC down into the laser chiller.
  
  1741   Tue Jul 14 00:32:46 2009 rob, albertoOmnistructureEnvironmentRemoval of the cold air deflection device for the MOPA chiller[quote][quote]Around 2 PM today, I removed
the blue flap which has been deflecting the
cold air from the AC down into the laser
  
  1745   Tue Jul 14 17:48:20 2009 JenneOmnistructureEnvironmentRemoval of the cold air deflection device for the MOPA chiller[quote][quote][quote]Around 2 PM today, I
removed the blue flap which has been deflecting
the cold air from the AC down into the laser
 ACeffectonLASER2.png 
  572   Thu Jun 26 10:56:15 2008 Max JonesUpdatePEMRemoved MagnetometerI removed the Bartington Magnetometer on the
x arm to one of the outside benches. I'll
be trying to determine if and how it works
  
  7246   Tue Aug 21 22:54:47 2012 JenneUpdateLockingRemoved beam dump from POY pathPOY was looking funny, and the YARM wasn't
locking.  It looked like POY wasn't
seeing any light at all.  I went to
  
  16676   Wed Feb 23 15:08:57 2022 AnchalUpdateGeneralRemoved extra beamsplitter in MC WFS pathAs discussed in the meeting, I removed
the extra beam splitter that dumps most of
the beam going towards WFS photodiodes. 
  
  4561   Fri Apr 22 12:07:38 2011 josephb, steveUpdateCDSRemoved hanging D-sub to SCSI in 1X2Problem:
Way back, Jay had D-sub
to SCSI adapters made to adapt our existing
Sander box AA filters to the new SCSI based
  
  4590   Fri Apr 29 14:36:36 2011 josephb, steveUpdateCDSRemoved hanging D-sub to SCSI in 1X5

    

       
            
 P1070621.JPG 
  3080   Wed Jun 16 11:31:19 2010 josephbSummaryComputersRemoved scaling fonts from medm on AllegraBecause it was driving me crazy while working
on the new medm screens for the simulated
plant, I went and removed the aliased font
  
  17184   Tue Oct 11 16:52:42 2022 AnchalUpdateIOORenaming WFS channels to match LIGO site conventions[Tega, Anchal]

c1mcs and c1ioo models have been
updated to add new acquisition of data.
  
  2806   Mon Apr 19 07:38:07 2010 ranaHowToElectronicsRepair and Calibration of SR560: s/n 59650Frank noticed that this particular SR560
had an offset on the output which was unzeroable
by the usual method of tuning the trim pot
  
  9560   Thu Jan 16 21:38:13 2014 ericqUpdateLSCRepeat of PRC length measurement[ericq,Jenne]
Since we don't have agreement between
the measurements we made the other day and
  
  15966   Thu Mar 25 16:02:15 2021 gautamSummarySUSRepeated measurement of coil Rs & Ls for PRM/BSMethod

Since I am mainly concerned with
the actuator part of the OSEM, I chose to
  
  9335   Mon Nov 4 12:07:55 2013 DmassOmnistructureGeneralReplaced Broken Drill BitsI broke a small bit while using the 40m
drill press to vent some 1/4-20 screws for
the cryo experiment.
  
  9202   Fri Oct 4 12:33:27 2013 MasayukiUpdateSUSReplaced the laser for Optical Lever of ETMY [Steve, Masayuki]
We replaced the laser for optical
lever of ETMY. And also we aligned the path
 OPLEV_SUM.pdfETMYoplev.png 
  9203   Fri Oct 4 14:36:44 2013 ranaUpdateSUSReplaced the laser for Optical Lever of ETMY   That's good, but please no
more Oplev work. We want to do all of
it at once and to make no more changes until
  
  9206   Sun Oct 6 18:37:43 2013 ranaUpdateSUSReplaced the laser for Optical Lever of ETMY I centered the ETMY OL today and found
that the UGF was around 3-4x too LOW after
the laser swap and re-alignment. That's why
 web-burnt-toast.jpg 
  9212   Mon Oct 7 10:51:18 2013 SteveUpdateSUSReplaced the laser for Optical Lever of ETMY  Just plot.
RA: I'm not
 ETMXoplevETMY.pngoplevSettings.png 
  8125   Wed Feb 20 23:25:50 2013 ZachSummaryElectronicsReplacement for the AD743: OPA140 and OPA827I have found two great FET input chips  ULN_opamp_comparison_2_20_13.png 
  8151   Sat Feb 23 18:01:38 2013 ZachSummaryElectronicsReplacement for the AD743: OPA140 and OPA827Rana suggested that I measure the OPA827
and OPA140 noise with high source impedance
so as to see if we could find the low-frequency
 OPA140_OPA827_noise_vs_Rs.pngScreen_Shot_2013-02-24_at_12.12.23_PM.pngScreen_Shot_2013-02-24_at_12.12.43_PM.png 
  8153   Sun Feb 24 16:49:00 2013 ranaSummaryElectronicsReplacement for the AD743: OPA140 and OPA827  This looks pretty good already.
Not sure if we can even measure anything
reasonable below 0.1 Hz without a lot of
  
  12239   Fri Jul 1 17:51:28 2016 PrafulSummaryElectronicsReplacing DIMM on OptimusThere has been an ongoing memory error
in optimus with the following messages:

controls@optimus|~
  
  12275   Fri Jul 8 15:44:07 2016 PrafulUpdateElectronicsReplacing DIMM on OptimusOptimus' memory errors are back so
I found the exact DIMM model needed to replace:
http://www.ebay.com/itm/Lot-of-10-Samsung-4GB-2Rx4-PC2-5300P-555-12-L0-M393T5160QZA-CE6-ECC-Memory-/201604698112?hash=item2ef0939000:g:EgEAAOSwqBJXWFZh
  
  12613   Mon Nov 14 14:21:06 2016 gautamSummaryCDSReplacing DIMM on OptimusI replaced the suspected faulty DIMM earlier
today (actually I replaced a pair of them
as per the Sun Fire X4600 manual). I did
  
  12615   Mon Nov 14 19:32:51 2016 ranaSummaryCDSReplacing DIMM on OptimusI did apt-get update and then apt-get upgrade
on optimus. All systems are nominal.
  
  15577   Wed Sep 16 12:03:07 2020 JonUpdateVACReplacing pressure gaugesAssembled is the list of dead pressure
gauges. Their locations are also circled
in Attachment 1.
 vac_gauges.png 
  15692   Wed Dec 2 12:27:49 2020 JonUpdateVACReplacing pressure gaugesNow that the new Agilent full-range gauges
(FRGs) have been received, I'm putting
together an installation plan. Since
  
  15703   Thu Dec 3 14:53:58 2020 JonUpdateVACReplacing pressure gaugesUpdate to the gauge replacement plan (15692),
based on Jordan's walk-through today.
  
  15158   Mon Jan 27 14:01:01 2020 JordanConfigurationGeneralRepurposed Sorenson Power Supply The 24 V Sorenson (2nd from bottom) in
the small rack west of 1x2 was repurposed
to 12V 600 mA, and was run to a terminal
  
  17268   Tue Nov 15 17:08:59 2022 PacoUpdateBHDRequest for estimates[Yehonathan, Yuta, Paco]

We would like to estimate:


LO phase sensitivty (for
  
  1681   Tue Jun 16 20:03:41 2009 AlbertoUpdateElectronicsRequirements on Wenzel MultiplierFor
the 40m Upgrade, we plan to 
 SummaryOfResult.pdf 
  3274   Fri Jul 23 10:16:44 2010 josephbUpdateCDSRerouted RFM around c1lsc, took RFM card out of c1lsc I re-routed around the c1lsc machine
this morning.  I turned the crate off,
and disconnected the transmission fiber from
  
  3283   Fri Jul 23 21:35:48 2010 ranaUpdateCDSRerouted RFM around c1lsc, took RFM card out of c1lsc I just realized that an unfortunate
casualty of this LSC work was the deletion
of the slow controls for the LSC which we
  
  3289   Mon Jul 26 10:02:42 2010 josephbUpdateCDSRerouted RFM around c1lsc, took RFM card out of c1lscIf you're refering to just the medm screen, 
those can be restored from the SVN. 
As we're moving to a new directory structure,
  
  16340   Thu Sep 16 20:18:13 2021 AnchalUpdateGeneralResetFridge brought back inside.




 PXL_20210917_031633702.jpg 
  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
  
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