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ID Date Author Type Category Subjectup Text Attachments
  5335   Fri Sep 2 13:12:08 2011 kiwamuUpdateIOOtriple resonant box : ready to installThe triple
resonant box was checked again. Each resonant
 refl_eom.png 
  5336   Fri Sep 2 15:56:32 2011 KojiUpdateIOOtriple resonant box : ready to installWhat are the reflected RF powers for those
frequencies? 
Is the 29.5MHz more problem than the
  
  2523   Mon Jan 18 23:44:19 2010 kiwamuUpdateElectronicstriple resonant circuit for EOMThe first
design of the triple resonant EOM circuit
 whole_circuit.pngdesigned_circuit.png 
  2524   Tue Jan 19 00:10:44 2010 ranaUpdateElectronicstriple resonant circuit for EOMVery cool.     
  2526   Tue Jan 19 02:40:38 2010 KojiUpdateElectronicstriple resonant circuit for EOMThe design looks very good. I have some
questions.
1. As far as I remember, you've
  
  2527   Tue Jan 19 03:04:14 2010 KojiUpdateElectronicstriple resonant circuit for EOMSelf-follow:
I got the answer of Q3 from the follow-up
entry.
  
  3462   Tue Aug 24 11:23:32 2010 steveUpdatePEMtripod leg installation completedBertine Robby, Bertin and Jerry completed
the installation by pouring concrete yesterday
and cleaning up today.
 7x 
  241   Wed Jan 16 14:09:45 2008 robUpdateLSCtuesday's locking
I got a little further with the locking (PRFPMI)
last night, after discovering that the cable
  
  1463   Thu Apr 9 12:23:49 2009 peteUpdateLockingtuning ETM common modePete, Yoichi
Last night, we put the IFO in FP
Michelson configuration.  We took transfer
 FPMI-DARM-CARM-ETM-fineScan.pdf 
  13143   Tue Jul 25 14:04:06 2017 SteveUpdateVACturbo controller installed and we are running at vac normalGautam and Steve,

Spare Varian turbo-V 70 controller,
Model 969-9505, sn 21612 was swapped in.
 TP2@75Krpm.png 
  4461   Wed Mar 30 16:57:13 2011 kiwamuUpdateGeneralturned off c1aux [Steve / Kiwamu]
 As a part of the video cable
session, we reconnected some power cords
  
  2479   Tue Jan 5 13:23:45 2010 AlbertoOmnistructureEnvironmentturning pageIn the lab there are lots of old posters
with outdated autocad drawings, or printouts
with schematics of old electronics hanging
  
  7949   Mon Jan 28 21:32:38 2013 jamieUpdateAlignmenttweaking of alignment into half PRC[Koji, Jamie]
We tweaked up the alignment of the
half PRC a bit.  Koji started by looking
  
  2707   Wed Mar 24 04:22:51 2010 kiwamu, mattUpdateGreen Lockingtwo NPRO PLL Now some pedestals, mirrors and lenses
are left on the PSL table, since we are on
the middle way to construct a PLL setup which
  
  2710   Wed Mar 24 14:52:02 2010 AlbertoUpdateGreen Lockingtwo NPRO PLL


   
        
            
  
  6857   Fri Jun 22 20:00:14 2012 JamieOmnistructureElectronicstwo RG-405 cables ran from 1X2 rack to control room[Yaakov, Eric, Jenne, Yuta]
Two of our surfs, Yaakov and Eric,
pulled two unused RG-405/SMA cables that
  
  4483   Fri Apr 1 23:49:24 2011 kiwamuSummaryGreen Lockingtwo states in green beat-noteAccording
to the measurement done by Aidan and me,
there are two beat-note state.
  
  10433   Wed Aug 27 18:03:47 2014 ericqUpdateGreen LockinguPDH Box Checkup Quick post of plots and data; I'll
fill in more detail tonight. 
TL;DR: I pulled both green PDH boxes
 uPDH_X.JPGuPDH_Y.JPGupdhTFs.pdfupdhNoises.pdfuPDH_Aug27.zip 
  10437   Thu Aug 28 17:34:20 2014 ericqUpdateGreen LockinguPDH Box CheckupI had noticed in the past, that the digital
control signal monitor for the X end would
saturate well before the ADC should saturate
 TEK00006.PNG 
  10438   Fri Aug 29 17:28:07 2014 ranaUpdateGreen LockinguPDH Box Checkup 
  
  10439   Fri Aug 29 23:53:35 2014 ericqUpdateGreen LockinguPDH Box CheckupI had pulled out both X and Y servo boxes
for inspection, put the Y box back, soldered
in a missing op amp power capacitor on the
  
  10441   Tue Sep 2 20:02:06 2014 ericqUpdateGreen LockinguPDH Box CheckupI narrowed down the saturation point in
the X green PDH box to the preamp inside
the AD8336, but there is still no clear answer
  
  10443   Wed Sep 3 00:17:22 2014 ranaUpdateGreen LockinguPDH Box CheckupWhat monitor point is being plotted here?
Or is it a scope probe output?
If this saturation is in the uPDH-X
  
  10447   Wed Sep 3 20:38:40 2014 ericqUpdateGreen LockinguPDH Box CheckupThe traces were from the front panel output
BNCs, but the VGA preamp exhibited this asymmetric
saturation at its output.  
  
  10426   Fri Aug 22 18:00:08 2014 jamieOmnistructureCDSubuntu12 awgstream installedI installed awgstream-2.16.14 in /ligo/apps/ubuntu12. 
As with all the ubuntu12 "packages",
you need to source the ubuntu12 ligoapps
  
  10177   Thu Jul 10 17:33:26 2014 jamieOmnistructureComputer Scripts / Programsubuntu12 software installed, gds 2.16.3.2Rana wanted the latest GDS installed (for
newest DTT), so I made an ubuntu 12 install
directory into which I installed
  
  9966   Fri May 16 20:55:18 2014 JamieFrogsloreun-full-screening Ubuntu windows with F11Last week Rana and I struggled to figure
out how to un-full-screen windows on the
Ubuntu workstations that appeared to be stuck
  
  11253   Sun Apr 26 01:10:18 2015 ranaUpdateASCunBroken Xass?Today I tried some things, but basically,
lowering the input gain by 10 made the thing
stable. In the attached screenshotstrip,
 xasstune_150426.pngxassnoise.pdf 
  11255   Sun Apr 26 15:05:35 2015 JenneUpdateASCunBroken Xass?Thank you both.

I have updated the .snap file,
so that it'll use these parameters, as
  
  6571   Thu Apr 26 09:22:17 2012 steveUpdate under the east end optical table

    
        
  
  6282   Wed Feb 15 11:34:01 2012 steveUpdate under the shouth end optical tableI added an U channel based bottom shelf
at the south end today.
 P1080535.JPGP1080537.JPG 
  1654   Fri Jun 5 01:10:13 2009 rob, peteUpdateLockingunderminedWe were stymied early in the evening by
a surreptitiously placed, verbo-visually
obfuscated command in the drstep script. 
  
  13171   Tue Aug 8 17:04:26 2017 SteveUpdateVACunintended pump downIFO pressure 2 Torr,    PSL 
shutter closed.  I'm pumping down
with 2 roughing pumps with ion pump gate
 pumping_down.png 
  13172   Tue Aug 8 17:44:11 2017 SteveUpdateVACunintended pump downPumpdown stopped for over night  at
~  1 Torr

The roughing line disconnected. 
 stopped_pumping.png 
  13175   Wed Aug 9 11:59:51 2017 SteveUpdateVACunintended pump down at vacuum normalpd80b has reached Vac Normal. IFO pressure
0.5 mTorr

We need our vauum channels back
 pdc.pngpd80b@vacnormal.png 
  11429   Sat Jul 18 16:59:01 2015 jamieUpdateCDSunloaded, turned off loading of, symmetricom kernel module on fbfb has been loading a 'symmetricom'
kernel module, presumably because it was
once being used to help with timing. 
  
  1585   Thu May 14 02:36:05 2009 peteUpdateLockingunstable IFOIt seems that the MC3 problem is intermittent
(one-day trend attached).  I tried to
take advantage of a "clean MC3"
 mc3.jpg 
  14805   Wed Jul 24 12:24:43 2019 MilindUpdateIOOunstick.py and ifotestMoved the unstick.py code to the ifotest
repository here.
It now handles signals like those generated
  
  1955   Thu Aug 27 12:34:48 2009 YoichiUpdateLockingup to arm power 70Last night, I tried to run locking scripts.
The power went up to 70 a couple of times
.
  
  12358   Sun Jul 31 17:28:38 2016 ranaOmnistructureGeneralupcleanI cleaned up the south Electronics bench
today.

The other two, as well as several
  
  6286   Thu Feb 16 04:29:30 2012 kiwamuUpdateLSCupconversion noise from BS motionSometimes ago I reported that there
have been a kind of upconversion noise when
PRM was excited (#6211).
 Untitled.png 
  3556   Fri Sep 10 02:35:30 2010 rana, kiwamu, valera, taraConfigurationPSLupdateOver the last couple nights we got the
beam into the FSS path and all the way to
the IMC and out onto the AP table.
 40mPSL.pdf 
  3544   Wed Sep 8 11:46:53 2010 kiwamuUpdatePSLupdate of the layoutI put some
green stuff on the layout drawing.
 40mPSL.png 
  6303   Wed Feb 22 01:53:57 2012 kiwamuUpdateLSCupdate on glitch tableI
tried SRMI. The glitch rate wasn't as high
as that of PRMI but it happened once per
  
  6386   Thu Mar 8 04:13:12 2012 kiwamuUpdateLSCupdate on the locking activity[Keiko / Kiwamu]
 Some updates on the locking
activity:
  
  6393   Fri Mar 9 13:34:13 2012 keikoUpdateLSCupdate on the locking activityWe tried to measure the sensing matrix
for MICH and PRCL last night. They look too
much mixed as we expect... the matrix may
  
  6398   Sat Mar 10 02:00:03 2012 keikoUpdateLSCupdate on the locking activityITMX and ITMY balance for the MICH excitation
(lockin) is adjusted again. Now it's ITMx
= -0.992, ITMy = 1 for MICH (lockin output
  
  3254   Tue Jul 20 23:52:36 2010 kiwamuUpdateVACupdate: slow vent has startedThe
vent is still going on. At this moment the
pressure inside of the chambers is about
 untitled.png 
  9897   Fri May 2 01:58:52 2014 ranaConfigurationComputer Scripts / ProgramsupdateDB configured to index NFS during CRON dailyI wanted
to use locate to find some files today, but
  
  8398   Wed Apr 3 01:32:04 2013 JenneUpdateComputersupdated EPICS database (channels selected for saving)I modified /opt/rtcds/caltech/c1/chans/daq/C0EDCU.ini
to include the C1:LSC-DegreeOfFreedom_TRIG_MON
channels.  These are the same channel
  
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