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ID Date Author Type Category Subjectup Text Attachments
  10869   Wed Jan 7 14:16:27 2015 JenneUpdateLSCtrans QPDs realignedNow that both end transmission QPDs have
the line filters, I aligned them.
I locked and aligned the IR using
  
  2494   Sun Jan 10 13:32:09 2010 HaixingUpdateSUStransfer function measurement of the quadrant maglev circuit I have assembled the circuit and the
control box for the quadrant magnetic
levitation yesterday. The final setup
 6x 
  2495   Sun Jan 10 15:47:26 2010 KojiUpdateSUStransfer function measurement of the quadrant maglev circuit 1. Why do all of the BNCs have no GND connection?
Each should have the individual cables to
the ground. Each signal line and the corresponding
  
  2497   Sun Jan 10 16:50:34 2010 HaixingUpdateSUStransfer function measurement of the quadrant maglev circuit

    
        
  
  2498   Sun Jan 10 17:15:25 2010 KojiUpdateSUStransfer function measurement of the quadrant maglev circuit 1. Yes. That is the bad. You should eventually
replace the BNCs to the isolated ones.
2. OK. I like to emphasize again
  
  4324   Fri Feb 18 15:05:49 2011 kiwamuUpdateGreen Lockingtransfer function of angle to beat note (length) [Koji and Kiwamu]
 We
 a2l_TF.png 
  6655   Tue May 22 00:23:45 2012 DenUpdateCDStransmission error monitorI've started to create channels and an
medm screen to monitor the errors that occur
during the transmission through the RFM model.
 Screenshot.png 
  13330   Mon Sep 25 17:56:33 2017 johannesUpdateComputer Scripts / Programstransmitted power during lossmapI had to do a reboot + burt restore of
c1psl today. It was unresponsive and I couldn't
get the PMC to lock. I also had to slightly
  
  6556   Sat Apr 21 21:10:34 2012 JamieUpdateCDStrend frame issue partially resolved

    

       
            
  
  7955   Tue Jan 29 15:16:18 2013 ManasaFrogsGeneraltrial run 
 I would like to suggest a trial
run on these....Ergomates and 
 ErgoMatesFeatures.jpgbooties.jpg 
  7967   Wed Jan 30 16:24:25 2013 ManasaFrogsGeneraltrial run

    

       
            
  
  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
  
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