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ID Date Author Type Category Subjectup Text Attachments
  3868   Fri Nov 5 14:06:19 2010 yutaUpdateIOOtried to align MC by A2L measurement(Suresh, Kiwamu, Yuta)

Summary:
 A2LmeasurementFigures.png 
  3713   Thu Oct 14 01:09:17 2010 yutaUpdateIOOtried to lock MC but failed(Rana, Koji, Kiwamu, Suresh, Yuta)
 
  
  6763   Wed Jun 6 02:28:02 2012 yutaUpdateGreen Lockingtried to see Yarm length change with weak beat note[Jenne, Yuta]

Summary:
 beatycoarseringdown20120605.pngbeatysetup20120605.png 
  4671   Mon May 9 18:54:29 2011 kiwamuUpdateLSCtriggerd locking logic : screen preparedI made a new medm screen for the triggering
logics. Have fun.
I put a button on C1LSC.adl to invoke
 trigger_medm.png 
  7055   Tue Jul 31 00:27:52 2012 DenUpdatePEMtrilliumWe have a Trillium for several days from
Vladimir. I've put seismometer inside the
foam box on linolium. I was not able to level
  
  11109   Fri Mar 6 13:48:17 2015 dark kiwamuSummaryIOOtriple resonance circuitI was asked by Koji to point out where
a
schematic of the triple resonant circuit
  
  2596   Fri Feb 12 13:15:41 2010 kiwamuUpdateElectronicstriple resonant EOM --- liniaryity test
I have
measured the linearity of our triple resonant
 linearity_edit.png 
  2602   Sat Feb 13 13:21:53 2010 KojiUpdateElectronicstriple resonant EOM --- liniaryity testLooks good. I just thought of the idea
that we also can use Alberto's PLL setup
to sense the modulation with more sensitivity. 
  
  2586   Wed Feb 10 17:28:02 2010 kiwamuUpdateElectronicstriple resonant EOM ---- preliminary resultI have made a
prototype circuit of the triple resonant
 mod_depth.png 
  2587   Wed Feb 10 23:15:37 2010 KojiUpdateElectronicstriple resonant EOM ---- preliminary resultHey, this looks nice, but can you provide
us the comparison of rad/V with the resonant
EOM of New Focus?
  
  2590   Thu Feb 11 16:52:53 2010 kiwamuUpdateElectronicstriple resonant EOM ---- preliminary resultThe commercial resonant EOM of New Focus
has the modulation efficiency of 
  
  5339   Sat Sep 3 14:47:50 2011 kiwamuUpdateIOOtriple resonant box : brief estimations about reflections and mode. depths(RF reflections)
The reflected RF power going back
to the RF generation box will be :
  
  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
  
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