40m QIL Cryo_Lab CTN SUS_Lab TCS_Lab OMC_Lab CRIME_Lab FEA ENG_Labs OptContFac Mariner WBEEShop
  40m Log, Page 276 of 344  Not logged in ELOG logo
ID Date Author Type Category Subjectup Text Attachments
  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

    

       
            
  
  5298   Wed Aug 24 16:13:36 2011 kiwamuUpdateSUSbroke UL magnet on ITMXI broke
the UL magnet on ITMX
  
  10120   Wed Jul 2 11:47:26 2014 SteveUpdateVACbroken changeover regulator of N2 supply

    

       
            
  
  7656   Thu Nov 1 17:37:00 2012 SteveUpdateGeneralbronze bushing for 40m vacSuprema- SS clear edge mirror mount 2"
diameter is modified for 40m vacuum use.
One left and one right handed one. It's adjustment
 IMG_1764.JPG 
  7660   Fri Nov 2 03:28:54 2012 ranaUpdateGeneralbronze bushing for 40m vac

    

       
            
  
  10   Tue Oct 23 11:08:20 2007 steveOtherGeneralbrush firesThere are big brush fires around LA
40 days plot show no effect in the 40m lab
 brushfires.jpg 
  1381   Mon Mar 9 23:55:38 2009 OsamuDAQComputersbscteststand and kami1 outside martianThis morning there was a confliction of
tpman running on fb40m and kami1. Alex fixed
it temporary but Rana suggested it was better
  
  6830   Mon Jun 18 17:28:03 2012 yutaSummaryComputersbugs in CDS_PARTS/simLinkParts/FcnFcn module in CDS_PARTS is used to include
a user defined function in a model.
We should be able to use this by entering
 model_sindegbug.pngdv_sindegbug.png 
  17153   Thu Sep 22 20:57:16 2022 TegaUpdateComputersbuild, install and start 40m models on teststand [Tega, Chris]

We built, installed and started
all the 40m models on the teststand today.
 dolphin_state_plus_c1shimmer.pngFE_status_overview.png 
  7942   Thu Jan 24 16:31:46 2013 SteveUpdatePEMbuilding exterier wall paintedThe wood exteier walls, gutters and doors
were painted at CES-Annex building #69
 IMG_1880.JPG 
  1958   Thu Aug 27 16:14:28 2009 steveSummaryOMCburned photodiodeOld -pre 6/2009  LLO DCPD 3 mm od
GTRAN photodiode
 20090827_173252.jpg20090827_170802.jpg 
  264   Fri Jan 25 09:22:21 2008 steveUpdatePEMburned toast award goes toDYM for  collaborating with the enemy. 

In order to minimize the number of ants visiting
  
  4053   Tue Dec 14 11:24:35 2010 josephbUpdateCDSburt restoreI had
updated the individual start scripts, but
forgotten to update the rc.local file on
  
  3706   Wed Oct 13 17:04:34 2010 josephb, yutaUpdateCDSburt restore now working with filter settingsPreviously, burt restoring was not setting
filters on and off, which was required us
to constantly go through all the filter banks
  
  4869   Thu Jun 23 22:00:22 2011 JamieUpdateSUSburt snapshotI recorded a burt snapshot of these settings:
/opt/rtcds/caltech/c1/burt/autoburt/snapshots/2011/Jun/23/21:40
  
ELOG V3.1.3-