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ID Date Author Type Category Subjectup Text Attachments
  4039   Thu Dec 9 23:17:47 2010 kiwamuUpdateSUSbeam pointing has been done[Koji, Osamu and Kiwamu]
 We
  
  4040   Fri Dec 10 09:58:57 2010 AidanUpdateSUSbeam pointing has been doneGood news. I feel multi-chromatic-locking
success is just around the corner.
By the way, there's a new presentation
  
  4874   Fri Jun 24 00:13:24 2011 kiwamuUpdateABSLbeam profile measurement of LWEThe
beam profile of the LWE (LightWave Electronics)
NPRO was measured.
 beam_profile.png 
  3570   Mon Sep 13 22:51:07 2010 tara,valeraConfigurationPSLbeam scan for RCAVOn Friday, Valera and I calculated the
modematching for reference cavity from AOM.
We scan the beam profile where the
 2010_09_10_w.mat 
  7527   Thu Oct 11 11:20:05 2012 janoschUpdateGeneralbeam shape simulation, PRCI started to create a Finesse model of
the PRC cavity. We have the phase maps for
the PRC and the two ITMs. I could not find
  
  4110   Wed Jan 5 03:06:02 2011 kiwamuUpdateIOObeam spots on MC mirrorsI checked
the spot positions on MC1 and MC3 by running
  
  528   Tue Jun 10 08:37:18 2008 steveUpdatePSLbeam trap is being testedHigh power beam trap is being tested just
west of FSS area on psl enclosure.
 trapss3w.png 
  6648   Thu May 17 15:31:22 2012 steveUpdateGeneralbeam trap posts & clamps for vacuum Aluminum posts and SS clamps for
green glass traps in vacuum will be out of
the shops by June 6, 2012 the latest
 05161201.PDF05151201.PDF 
  5047   Wed Jul 27 15:38:01 2011 steveUpdateVACbeam traps for vacuumWe have cleaned, baked, rga scaned traps
for vacuum. Thorlabs LB1 on 1" OD ss
posts and forks. The effective surface area
 P1080095.JPG 
  8087   Fri Feb 15 09:58:49 2013 SteveUpdateGeneralbeam traps ready to be installedBlack-green glass traps are ready for light
in vacuum. I can assemble more if needed.
These three sizes are available.
 IMG_0083.JPGIMG_0084.JPG 
  8089   Fri Feb 15 16:09:19 2013 KojiUpdateGeneralbeam traps ready to be installedFor the hexagonal one, insert one of the
glass plate only half. Use a 1"x.5"
piece if exists.
 HexBeamDump.pdfDiamondBeamDump2in.pdf 
  5872   Fri Nov 11 12:32:45 2011 KatrinUpdateGreen Lockingbeat PSL - YARM laser [Suresh, Katrin]
Measured frequency fluctuation of
the beat between PSL and YARM lasers.
 beat_psl_y.png 
  4211   Thu Jan 27 11:04:27 2011 KojiUpdateGreen Lockingbeat freq scanExperiment in the night of Jan 26.
o The arm was locked for the IR beam
and was aligned for it.
 arm_scan.pdfarm_cav_scan3.png110126_ALS_inloop.pdf 
  4268   Thu Feb 10 05:06:35 2011 kiwamuUpdateGreen Lockingbeat noise : a little bit better, and 1Hz peak from amplitude noise coupling I
repeated the same measurement as that Koji
 Screen_shot_2011-02-10_at_4.01.43.pngScreen_shot_2011-02-10_at_4.52.13.png 
  6302   Tue Feb 21 22:06:18 2012 jamieUpdateLSCbeatbox DFD installed in 1X2 rackI have installed a proto version of the
ALS
beatbox delay-line frequency discriminator
  
  6794   Mon Jun 11 21:50:08 2012 yutaUpdateGreen Lockingbeatbox looks OKSummary:
  We need I-Q frequency deiscriminator
to control the arm length fine and continuously.
 CIMG1522.JPG 
  734   Thu Jul 24 11:49:07 2008 MashaSummaryAuxiliary lockingbelated weekly summaryI designed a high pass filter to whiten the
spectrum from the Mach Zehnder to optimize
the 
 filter_tr_function.pdffiltered_spectr0724.pdf 
  7342   Tue Sep 4 20:25:22 2012 jamieOmnistructureVACbetter in-air "lite" access connector neededWe really need something better to replace
the access connector when we're at air. 
This tin foil tunnel crap is dumb. 
  
  7343   Wed Sep 5 09:50:25 2012 SteveOmnistructureVACbetter in-air "lite" access connector needed

    

       
            
 IMG_1612.JPG 
  7344   Wed Sep 5 10:50:15 2012 jamieOmnistructureVACbetter in-air "lite" access connector needed

    

       
            
  
  7345   Wed Sep 5 13:11:43 2012 jamieOmnistructureVACbetter in-air "lite" access connector needed

    

       
            
  
  7952   Tue Jan 29 10:59:37 2013 lazy personFrogsGeneralbetter plan 
 I propose we work around this
problem with giant
  
  2670   Fri Mar 12 17:08:22 2010 steveConfigurationVACbg-RGAscan at d18RGA scan of rga-region only at day 18  
This is the back ground of the rga with some
calibration gas.
 bg-d18_20100312scan.png 
  11040   Mon Feb 16 21:52:51 2015 ranaHowToTreasurebig Dataviewer windowsFollowing this
entry, I have made the same change in
the controls account on rossa:
 bigDV.png 
  15680   Tue Nov 17 13:24:40 2020 ChubUpdateGeneralbig UPS on the wayOrdered 11/16 from CDW, on PO# S492940, the
high voltage Tripp Lite SMART5000XFMRXL 
  
  894   Thu Aug 28 19:02:25 2008 rana, josephb, robSummaryComputersbig bootThis afternoon Joe did something with an .ini
file (look for his detailed elog entry) and
the computers went bad.
  
  13731   Thu Apr 5 13:46:42 2018 gautamUpdateSUSbig earthquakeSeems like there was a 5.3 magnitude EQ
~10km from us (though I didn't feel it).
All watchdogs were tripped so our mirrors
 EQ_April52018.png 
  7923   Tue Jan 22 09:10:19 2013 SteveUpdatePEMbig foot is dirtyPlease wipe, clean car wheels and wear
booties entering the 40m lab.
Obviously this person has no idea
 IMG_1873.JPGIMG_1874.JPG 
  513   Tue Jun 3 10:19:45 2008 tobinConfigurationComputersbig machineSeveral of us transported the big new awesome
Sun box from Bridge over to 
the 40m last week.  If I recall correctly,
  
  3490   Mon Aug 30 22:45:49 2010 kiwamuUpdateCDSbinary outputs for the new CDS{ Joe and Kiwamu }
Today we made some efforts to
get the binary outputs (BOs) working.
  
  6616   Mon May 7 21:05:38 2012 DenUpdateCDSbiquad filter formI wanted to switch the implementation of
IIR_FILTER from DIRECT FORM II to BIQUAD
form in C1IOO and C1SUS models. I modified
  
  6622   Tue May 8 09:47:53 2012 JamieUpdateCDSbiquad filter form

    

       
            
  
  6624   Tue May 8 10:43:42 2012 DenUpdateCDSbiquad filter form

    

       
            
  
  7041   Thu Jul 26 17:39:49 2012 DenUpdatedigital noisebiquad key is working I've filtered a 1 Hz sin wave excitation
with a notch filter inside c1sus and c1rfm
models. The biquad key is switched on in
 df2_bqf.pngdf2_bqf_spec.pngiir_psd_notch.pngiir_time_notch.png 
  7045   Fri Jul 27 14:30:49 2012 JamieUpdatedigital noisebiquad key is workingWhat is "DQF"?  Is that
the biquad?  And what is the difference
between DF1 and DF2?  Why don't you
  
  7050   Mon Jul 30 14:24:25 2012 DenUpdatedigital noisebiquad key is working

    

       
            
 lnf.png 
  6748   Sun Jun 3 23:50:00 2012 DenUpdateCDSbiquad=1From now all models calculate iir filters
using biquad form. I've added biquad=1 to
cdsParameters to all models except c1cal,
  
  4597   Mon May 2 13:43:05 2011 steveFrogsPhotosbirthday boys.....Happy.... Birthday.... to.... Joseph...
and... Jamie...Happy....Birthday..... to....
You............sing with us........Happy
 P1070622.JPG 
  11972   Wed Feb 3 08:39:17 2016 SteveUpdateCDSblank daily summary pagesDaily summary pages are blank today. Yesterday
is ok
  
  7545   Mon Oct 15 08:12:45 2012 SteveUpdateVACblank vac monitorVME
crate  blew its fuse and the fuse
housing is hard to access.
 blankvac.png 
  1184   Sun Dec 7 16:12:53 2008 ranaUpdateDAQbooted awg[SIZE=3]because it was [COLOR=red]red[/COLOR][/SIZE]   
  12389   Tue Aug 9 19:35:49 2016 ranaUpdateSEIboth Guralp seismometers are functioning and being acquiredAfter
some cable swapping, we now have both Guralp
seismometers running and the times series
 1goodday.png 
  6840   Wed Jun 20 18:09:23 2012 yutaUpdateLockingboth arms aligned, ITMX oplev centered[Jenne, Yuta]

We aligned FPMI. I also centered ITMX
 FPMIalignment2010620.png 
  8162   Mon Feb 25 21:25:14 2013 yutaUpdateAlignmentboth arms locked in IR[Jenne, Evan, Yuta]

After Y alignment, X arm is aligned
 QUAD1_1045890588.png 
  12448   Fri Aug 26 17:48:14 2016 gautamUpdateSUSbounce mode coupling reductionWe worked on reducing the bounce mode coupling
into the sensor signals today. After some
trial and error, essentially following the
 ETMY_BounceSpectra_26Aug2016_1.pdf 
  456   Sun Apr 27 18:11:58 2008 robDAQComputersbr40m?
The testpoint manager (which runs on fb40m)
crashed this afternoon.  Upon re-starting
  
  457   Sun Apr 27 22:57:15 2008 ajwDAQComputersbr40m?[quote]
The testpoint manager (which runs on fb40m)
crashed this afternoon.  Upon re-starting
  
  3832   Mon Nov 1 10:17:55 2010 steveUpdateGeneralbreakers relabelledPedro of the electrical shop helped to
retrace wires from the racks to the breakers.
Many wrong labels were replaced. These labels
 P1060970.JPGP1060972.JPGP1060975.JPG 
  2420   Tue Dec 15 21:39:34 2009 AlbertoUpdateABSLbrief summary of this afternoon's measurementsI took measurements of the open loop
gain of the AbsL PLL with the old Universal
PDH Box.
I Also measured the
  
  5978   Tue Nov 22 15:18:18 2011 kiwamuUpdateGreen Lockingbroad band noise depends on the gain of Y green PDH. and comaprator broken

    

       
            
  
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