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ID Date Author Typeup Category Subject Text Attachments
  12764   Fri Jan 27 19:40:03 2017 ranaMetaphysicselogword wrapping & large images"Why does the word wrapping not work
in our browsers with ELOG?" I sometimes
wonder. Some of the elogs are fine, but often
  
  12776   Tue Jan 31 15:08:13 2017 ericqMetaphysicsCDSMinute Trend KoanA novice was learning at the feet of Master
Daqd. At the end of the lesson he looked
through his notes and said, “Master,
  
  14265   Fri Nov 2 09:47:57 2018 SteveMetaphysicsTreasureZojirushi is dead     It took at least
ten years to rust away. 
 DSC01773.JPGzoji.JPG 
  14271   Mon Nov 5 15:55:39 2018 SteveMetaphysicsTreasureZojirushi is deadWe
have no coffee machine.

We
 zoji.JPG 
  14272   Tue Nov 6 09:45:32 2018 aaronMetaphysicsTreasureZojirushi is deadNew
all organic machine.
  
  16485   Wed Nov 24 17:13:31 2021 YehonathanMetaphysicsGeneralToilet tank brokenThe toilet tank in the big bathroom stopped
refilling. I contacted PPService@caltech.edu
and put up an "Out of Order sign".
  
  16487   Tue Nov 30 11:03:44 2021 YehonathanMetaphysicsGeneralToilet tank brokena plumber came in yesterday and fixed the
issue.

  
  64   Mon Nov 5 22:24:38 2007 Andrey, SteveOmnistructureVACPumping down goes smoothly
We (Steve and Andrey) started pumping down
at 3.25PM today. At 9 PM we turned off the
  
  79   Wed Nov 7 14:01:31 2007 waldmanOmnistructureOMCFrequency and Intensity noiseOne of the biggest problems I had using the
PZT to lock was excessive noise.  I did a
little noise hunting and found that the problem
  
  86   Fri Nov 9 00:01:24 2007 waldmanOmnistructureOMCOMC mechanical resonances (Tap tap tappy tap)[Pinkesh, Aidan, Sam]

We did a tap-tap-tappy-tap test of the OMC
 7x 
  99   Wed Nov 14 07:48:38 2007 nornaOmnistructureOMCOMC Cable dressing[Snipped from an email]

1) Last Friday Pinkesh and I set the OMC
 OMC-11-13-07_011.jpgVerticalTrans.pdf 
  114   Mon Nov 19 14:19:25 2007 steveOmnistructurePEMjackhammerThe construction personal successfully jackhemmered
a fence around the "Drever's parking slot"
There is no parking space available close
 jackhammer.jpgjackhammer2.jpg 
  122   Mon Nov 26 10:17:31 2007 steveOmnistructureSUSetmy sus damping restored20 days plot is showing etmy loosing damping
4 times.
I zoomed in with each event. Three of them
 etmyrms20d.jpgetmyrmseq.jpg 
  129   Wed Nov 28 08:47:29 2007 steveOmnistructureVACrga is out of orderThe rga is not working since Nov 10
The controller is broken.
pd65-m-d23
 pd65d23.jpg 
  139   Thu Nov 29 11:10:54 2007 robOmnistructureVACRGAlogger sleepingWithout the RGA controller responding, the
RGAlogger script just hangs.  Rather than
fix it, I just put it to sleep by commenting
  
  153   Sun Dec 2 17:37:33 2007 ranaOmnistructureComputersNetwork Cabling in the OfficeWe all know that we've spent many integrated
man hours trying to figure out why our network
connections
  
  179   Fri Dec 7 11:33:24 2007 waldmanOmnistructureOMCPZT wiringThe 2 pin LEMO connector has got an unmarked
pin and a pin marked by a white half-circle.
The unmarked pin is connected to the side
  
  188   Wed Dec 12 16:22:22 2007 albertoOmnistructureElectronicsLC filter for the RF-AM monitor circuitIn the LC configuration (see attached schematic)
the resonant frequency is tuned to one of
the peak of our RF-AM monitor and it is amplified
 TF_LC_filter_10pF_1.8uH_scope_probe.pngTF_LC_filter_10pF_1.8mH_no_probe.pngLC_filter_schematic.png 
  190   Thu Dec 13 12:05:36 2007 albertoOmnistructureElectronicsThe new Butterworth seems to work quite wellIt works better probably because of the small
inductors I'm using this time.
The peak is at 30 MHz because I didn't have
 TF_New_Butterworth_12-Nov-2007_TF.pngBultervverth2.png 
  200   Wed Dec 19 11:31:01 2007 steveOmnistructurePEMaircond filter maintenanceJeff is working on all air condiontion units
of the 40m lab
This we do every six months.
 acfilters6m.jpg 
  272   Sat Jan 26 02:08:53 2008 JohnOmnistructureLSCFibresThere is now a fibre running from the SP table
to the ISCT at the Y-end. In the coming days
I will try to mode match the beam from this
  
  310   Tue Feb 12 13:53:27 2008 robOmnistructureVACReturn of the RGA
The new RGA head was installed a few days
ago.  I just ran the [B]RGAlogger[/B] script
 RGA-080212.png 
  365   Fri Mar 7 19:04:39 2008 steveOmnistructurePSLlaser pointerGreen laser pointer was found in my desk.
I blamed Rana for not returning it to me
after a conference talk.
  
  453   Sat Apr 26 11:21:15 2008 ajwOmnistructureComputersbackup of /cvs/cds restartedThe backup of /cvs/cds (which runs as a cron
job on fb40m; see /cvs/cds/caltech/scripts/backup/000README.txt)
  
  464   Mon May 5 11:04:30 2008 robOmnistructureComputersNetwork setup
Mafalda was not connected to the network,
and so our DMF-based seisBLRMS has not been
  
  483   Fri May 16 17:27:55 2008 AndreyOmnistructureGeneralToilets are broken, do not use them !!!
[COLOR=red][SIZE=4] Both toilets in 40-meter
were constantly flushing, the leaking water
  
  780   Fri Aug 1 11:51:15 2008 justingOmnistructureComputersadded /cvs/cds/site directoryI added a /cvs/cds/site directory.  This is
the same as is dicsussed [URL=http://ilog.ligo-la.caltech.edu/ilog/pub/ilog.cgi?group=detector&date_to_view=04/19/2008&anchor_to_scroll_to=2008:04:19:15:54:09-lisab]here[/URL].
 Right now it just has the text file 'cit'
  
  885   Tue Aug 26 09:58:59 2008 steveOmnistructureCOCETMX is #03This is the picture of ETMX from the upper
south west viewport
 etmx-d40posg_012.jpgetmx03.jpg 
  888   Tue Aug 26 18:19:16 2008 ranaOmnistructureElectronicsResistor Noise at the 40mAs Stefan points out in his recent ISS ilog
entries at LLO, Daniel [COLOR=darkgreen]Sigg
recently wrote a
 SEI-RN_RNM.pdf 
  1038   Fri Oct 10 00:34:52 2008 robOmnistructureComputersFEs are down
The front-end machines are all down.  Another
cosmic-ray in the RFM, I suppose.  Whoever
  
  1039   Fri Oct 10 10:20:42 2008 AlbertoOmnistructureComputersFEs are down[quote]
The front-end machines are all down.  Another
cosmic-ray in the RFM, I suppose.  Whoever
  
  1040   Fri Oct 10 13:57:33 2008 AlbertoOmnistructureComputersProblems in locking the X armThis morning for some reason that I didn't
clearly understand I could not lock the Xarm.
The Y arm was not a problem and the Restore
  
  1070   Wed Oct 22 20:50:30 2008 AlbertoOmnistructureComputersGPSToday I measured the GPS clock frequency at
the output of CLOCK_MON in a board on the
same crate where the c1iool0 computer is
  
  1075   Thu Oct 23 18:45:18 2008 AlbertoOmnistructureComputer Scripts / ProgramsPython code for GPIB devices developed for the Absl length experimentI wrote two Python scripts for my measurement
that can be also used/imitated by others:
sweepfrequency. py and HP8590.py. The first
 HP8590.pysweepfrequency.py 
  1135   Fri Nov 14 17:41:50 2008 JenneOmnistructureElectronicsSweet New Soldering IronThe fancy new Weller Soldering Iron is now
hooked up on the electronics bench.  
 newSolderingIron.JPG 
  1198   Sat Dec 20 23:37:43 2008 robOmnistructureGeneralSaturday Night Fever after presumed power failure
Just came by to pick something up...
  
  1215   Sun Jan 4 13:17:23 2009 AlanOmnistructureComputer Scripts / ProgramsNew 40mWebStatusI have set up some code in /cvs/cds/caltech/scripts/webStatus
along with a cronjob on controls@nodus to
generate a webStatus every half hour, at
  
  1216   Mon Jan 5 11:21:05 2009 AlanOmnistructureComputer Scripts / ProgramsNew 40mWebStatus[quote]
I guess we need some kind of "official" crontab
file for controls@nodus so that we know how/where
  
  1218   Thu Jan 8 20:26:17 2009 robOmnistructureGeneralEarthquake in San BernardinoMagnitude 4.5
Date-Time
  
  1372   Mon Mar 9 10:59:05 2009 AlanOmnistructureComputersssh agent on fb40m restarted for backupAfter the boot-fest, the nightly backup
to Powell-Booth failed, and an automatic
email got sent to me. I restarted the ssh
  
  1392   Thu Mar 12 00:29:39 2009 JenneOmnistructureDMFDMF being whiny again[QUOTE]The seisBLRMS has been running on megatron
via an open terminal ssh'd into there from
allegra with matlab running.[/QUOTE]
  
  1414   Fri Mar 20 15:54:29 2009 steveOmnistructureGeneral480V crane power switch on MEZCES Mezzanine is beeing rebuilt to accommodate
our new neighbor: the 20ft high water slide...&
.jacuzzi
  
  1453   Fri Apr 3 14:52:38 2009 JenneOmnistructurePEMGuralp is finally back!After many, many "it'll be there in
2 weeks" from the Guralp people, our
seismometer is finally back!
  
  1518   Fri Apr 24 16:24:25 2009 robOmnistructureVACPaschenIn response to Steve's elog entry, and
for 40m posterity, I provide the Paschen
Curve.
 paschens.pngpaschenplot.m 
  1564   Fri May 8 10:05:40 2009 AlanOmnistructureComputersRestarted backup since fb40m was rebootedRestarted backup since fb40m was rebooted.   
  1594   Sun May 17 20:50:38 2009 robOmnistructureEnvironmentmag 5.0 earthquake in inglewood2009 May 18  03:39:36 UTC



   Details
  
  1613   Wed May 20 10:43:17 2009 steveOmnistructureEnvironmentaccelerometers sensitivity


   
        
            
 eq5m4.jpg 
  1614   Wed May 20 16:03:52 2009 steveOmnistructureEnvironmentusing OSEMs to look at seismic activityRana suggested using OSEM sensing voltages
as guide lines to look seismic activity.
As you see todays drilling and tumping
 eqOSEM5m4.jpg 
  1722   Wed Jul 8 11:13:36 2009 AlbertoOmnistructureComputerswireless router disconnectedOnce again, this morning I found the wireless
router disconnected from the LAN cable. No
martian WiFi was available.
  
  1731   Fri Jul 10 19:56:23 2009 rana, kojiOmnistructureEnvironmentChanged office tempI have increased the temperature setpoint
in the office area by ~0.75 deg F. Figure
attached. Also a few days ago I increased
 therm.JPG 
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