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ID Date Author Type Category Subjectup Text Attachments
  14438   Thu Feb 7 13:55:25 2019 gautamUpdateVACRGA turned on[chub, steve, gautam]

Steve came by the lab today. He
  
  1974   Tue Sep 8 16:01:52 2009 steveConfigurationVACRGA was separeted from IFOThe RGA isolation valve VM1 was closed
since Aug 24, 2009  I installed the
new UPS that time.
 vm1closed.jpg 
  139   Thu Nov 29 11:10:54 2007 robOmnistructureVACRGAlogger sleepingWithout the RGA controller responding, the
RGAlogger script just hangs.  Rather than
fix it, I just put it to sleep by commenting
  
  10224   Thu Jul 17 00:38:30 2014 JenneUpdateLSCRIN in arm transmission[Rana, Jenne]
We had a look at the RIN of the transmission
signals TRX and TRY, when the arms were individually
 TransRIN.pdf 
  10241   Sat Jul 19 17:36:44 2014 JenneUpdateLSCRIN in arm transmissionI looked at what the RIN contribution of
the sqrtInv sensor is by locking the arms
individually on IR using POX and POY. 
 TransSqrtInvRIN_vs_ALSsensing_18July2014.pngThorlabsRIN_16July2014.png 
  10242   Sat Jul 19 20:51:51 2014 KojiUpdateLSCRIN in arm transmissionYour
calibration of the ALS signal should be revised.
The phase for the ALS is not an optical
  
  10258   Wed Jul 23 02:01:15 2014 JenneUpdateLSCRIN in arm transmission - revised calibration 
As Koji pointed out, I messed up
the calibration.  However, fixing it
 TransSqrtInvRIN_vs_ALSsensing_18July2014.png 
  10703   Wed Nov 12 18:08:35 2014 JenneUpdateLSCRIN in transmission a problem?In my previous meditations about RIN, particularly
elog
10258, I was only thinking about the
 RIN_TRX_TRY_MCtrans_12Nov2014_zip.xml.gzRIN_TRX_TRY_MCtrans_12Nov2014.pdfRINcontribution_12Nov2014_linearXscale.pngRINcontribution_12NOv2014_logXscale.png 
  10707   Thu Nov 13 01:00:37 2014 ranaUpdateLSCRIN in transmission a problem? 
 I modified the MC2 trans optical
setup a little bit: the reflection from the
  
  10709   Thu Nov 13 04:28:28 2014 JenneUpdateLSCRIN in transmission a problem?[Jenne, Rana, Koji]
We
did some thinking on what could be causing
 zippyzip.zipRIN_TRX_TRY_IPPOS_NoLens_12Nov2014.pdf 
  10720   Fri Nov 14 20:31:13 2014 ericqUpdateLSCRIN in transmission a problem?I took a quick look at single arm RIN.
Actuating on MC2 vs. the ETM, or using AS55
instead of POY11 made no noticeable difference
  
  10294   Wed Jul 30 09:33:33 2014 SteveUpdateSUSRIN of HeNe lasersFrom old 40m elog 5-29-2007  RINHeNe.pdfRINHeNe2.pdfRINHeNe2.pdfRINHeNe3.pdf 
  10712   Thu Nov 13 23:42:01 2014 JenneUpdateLSCRIN vs. SeismicAfter Kate, Diego and I moved the seismometers
to the corner for a huddle test (see elog
10711), I wanted to check the coherence
 Seismic_TRXTRYandMC_13Nov2014.pdf 
  10718   Fri Nov 14 17:08:17 2014 JenneUpdateLSCRIN vs. SeismicT-240 has a different convention than we
use.  It assumes that North is aligned
with the Y-axis.  Since this is the
  
  16335   Thu Sep 16 00:00:20 2021 KojiUpdateGeneralRIO Planex 1064 Lasers in the south cabinetRIO Planex 1064 Lasers in the south cabinet

Property Number C30684/C30685/C30686/C30687
 P_20210915_232426.jpg 
  11078   Thu Feb 26 16:37:21 2015 manasaFrogsLSCRIP illegal power supplyNo more illegal power supply at the LSC
rack 
  
  7019   Tue Jul 24 15:17:10 2012 MashaUpdatePEMRMS Filters, PEM SitemapRMS Filters
How Den, Rana, and I chose RMS filters:
 GUR1Z0p3to1FilterCoherence.pngGUR1Z3to10FilterCoherence.pngGUR1Z3to10FilterSignal.png 
  8836   Fri Jul 12 12:51:13 2013 CharlesUpdateISSRMS Noise from PMC TransmissionI went out on the floor to look at the
transmitted signal from the PMC to get a
rough idea of the noise of the unstabilized
  
  8838   Fri Jul 12 13:15:43 2013 KojiUpdateISSRMS Noise from PMC TransmissionIt would be better to measure the power
spectrum density of the fluctuation. 
The RMS does not tell enough information
  
  8839   Fri Jul 12 18:30:20 2013 CharlesUpdateISSRMS Noise from PMC Transmission

    

       
            
  
  8830   Thu Jul 11 13:52:51 2013 CharlesUpdateISSRMS threshold detection and triggeringThere are essentially two major portions
of the ISS I am designing. One system has
the voltage reference, differential amplifier
 40mServo_v1.pdfSimple_Comparator_Circuit.pngF0001TEK.JPG 
  11134   Wed Mar 11 19:15:03 2015 KojiSummaryLSCROUGH calibration of the darm spectrum during the full PRFPMI lockI made very rough calibration of
the DARM spectra before and after the transition
for the second lock on Mar 8.
 150308_DARM_ROUGH_CALIB.pdf 
  17051   Mon Aug 1 17:19:39 2022 CiciSummaryGeneralRPitaya Data on Jupyter NotebookHave successfully plotted data from the
Red Pitaya on Jupyter Notebook! Have
lost years of my life fighting with PyQt.
  
  13365   Fri Oct 6 12:56:40 2017 gautamSummaryLSCRTCDS NN[gabriele, gautam]

Gabriele had prepared a C code
implementation of his NN for MICH/PRCL state
 post_NN_test.png 
  14122   Wed Aug 1 19:41:15 2018 gautamSummaryComputersRTCDS recovery, c1ioo changes[Gautam Koji]

After this work, we recovered the
nominal RTCDS state. The main points were:
 CDS_overview.png 
  15950   Sun Mar 21 19:31:29 2021 ranaSummaryElectronicsRTL-SDR for monitoring RF noise / interferenceWhen we're debugging our RF system,
either due to weird demod phases, or low
SNR, or non-stationary noise in the PDH signals,
 Screen_Shot_2021-03-21_at_7.43.24_PM.png 
  6124   Thu Dec 15 11:47:43 2011 jamieUpdateCDSRTS UPGRADE IN PROGRESSI'm now in the
middle of upgrading the RTS to version 2.4.
All
RTS systems will be down until futher notice...
  
  16935   Tue Jun 21 21:17:16 2022 yutaUpdateBHDRTS models for BHD added but PCIE error remaining[Anchal, Yuta]

RTS
models for BHD homodyne phase control (c1hpc)
 Screenshot_2022-06-21_20-12-55_C1HPC.pngScreenshot_2022-06-21_20-14-56_C1SU2.pngScreenshot_2022-06-21_20-13-38_C1LSC.pngScreenshot_2022-06-21_20-34-44_RED.png 
  6125   Thu Dec 15 22:22:18 2011 jamieUpdateCDSRTS upgrade aborted; restored to previous settingsUnfortunately, after working on it all
day, I had to abort the upgrade and revert
the system back to yesterday's state.
  
  6174   Thu Jan 5 20:40:21 2012 JamieUpdateCDSRTS upgrade aborted; restored to previous settings; fb symmetricom card failing?After running into more problems with the
upgrade, I eventually decided to abort todays
upgrade attempt, and revert back to where
  
  6173   Thu Jan 5 09:59:27 2012 JamieUpdateCDSRTS/RCG/DAQ UPGRADE TO COMMENCERTS/RCG/DAQ UPGRADE
TO COMMENCE
I will be attempting
(again) to upgrade the RTS, including the
  
  16428   Tue Oct 26 14:53:24 2021 KojiUpdateElectronicsRack1. We have a rack at the 40m storage. We
are free to take it to the lab. If there
is a tag, tell the info to Liz. Let's
 P_20211026_143814.jpg 
  16458   Mon Nov 8 18:42:38 2021 KojiSummaryBHDRack Layout / Power Strips


Rack
 rack_plan.pdf 
  14869   Tue Sep 10 16:10:40 2019 ChubUpdate Rack UpdateStill removing old cable, terminal blocks
and hardware.  Once new strain reliefs
and cable guides are in place, I will need
 20190910_154018.jpg20190910_154006.jpg 
  2953   Wed May 19 16:09:11 2010 josephbUpdateCDSRacks to small for IO Chassis railsSo I discovered the hard way that the racks
are not standard width, when I was unable
to place a new IO chassis into the racks
  
  2809   Mon Apr 19 16:27:13 2010 AidanUpdateGreen LockingRaicol crystals arrived and we investigated themJenne, Koji and I opened up the package
from Raicol and examined the crystals under
the microscope. The results were mixed and
  
  2816   Tue Apr 20 11:14:31 2010 AidanUpdateGreen LockingRaicol crystals arrived and we investigated them 
 Here
is Crystal 724 polished side 2 with all photos
  
  1939   Tue Aug 25 01:27:09 2009 ranaConfigurationComputersRaid update to Framebuilder (not quite)


   
        
            
  
  1901   Fri Aug 14 10:39:50 2009 josephbConfigurationComputersRaid update to Framebuilder (specs)The RAID array servicing the Frame builder
was finally switched over to JetStor Sata
16 Bay raid array. Each bay contains a 1
  
  427   Fri Apr 18 16:48:13 2008 AndreyUpdatePEMRain collector of weather station
Today the rain collector of our weather station
was cleaned. As a result, we checked that
 DSC_0520--before.JPGDSC_0537--after.JPG 
  11283   Mon May 11 15:15:12 2015 manasaUpdateGeneralRan ASS for armsArm powers had drifted to ~ 0.5 in transmission.

X and Y arms were locked and ASS'd
to bring the arm transmission powers to
  
  16398   Wed Oct 13 11:25:14 2021 AnchalSummaryCDSRan c1sus2 models in martian CDS. All good!Three extra steps (when adding
new models, new FE):


Chris
pointed out that the sudo command in c1sus2
 CDS_screens_running.png 
  52   Thu Nov 1 19:54:22 2007 Andrey RodionovBureaucracyPhotosRana's photo   DSC_0120.JPG 
  11635   Tue Sep 22 16:52:36 2015 ericqSummaryGeneralRandom NotesSome things bouncing around my head that
haven't made it to ELOG yet:


Last week, Rana and I were
  
  2430   Thu Dec 17 23:27:23 2009 ranaUpdatePEMRanger Noise: sim w. Rai FET box as readoutI have started measuring the low frequency
noise of the FET front end + LT1128 low noise
preamp from Rai Weiss. It has a very low
 ranger.pdf 
  363   Fri Mar 7 00:47:54 2008 ranaConfigurationPEMRanger SS-1Yesterday evening around 7:30 PM, I changed
the Ranger seismometer from a 
vertical to a horizontal seismometer. To
 ss1.pdf 
  881   Mon Aug 25 15:50:18 2008 ranaSummaryPEMRanger SS-1The manual for the Ranger SS-1 seismometer
can be found on line here:
[URL=ftp://ftp.kmi.com/pub/software_manuals/300190/300190nc.pdf]ftp://ftp.kmi.com/pub/software_manuals/300190/300190nc.pdf[/URL]
  
  1167   Tue Dec 2 19:18:10 2008 ranaSummaryPEMRanger SS-1In entry http://dziban.ligo.caltech.edu:40/40m/881
and a follow up from Jenne I put in the Ranger
calibration.
  
  391   Fri Mar 21 23:15:11 2008 ranaConfigurationPEMRanger SS-1: New SetupThe Ranger seismometer has been in a bad state.
Its output had been sent into a SR560 without
any termination.
  
  1171   Wed Dec 3 19:21:09 2008 ranaConfigurationPEMRanger moveI looked at the Ranger signals. [B]Somehow
it has a relative transfer function of 'f'
between it and the Guralp.[/B]
 c.pdfwsnb.pdf 
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