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ID Date Author Type Categoryup Subject Text Attachments
  17031   Mon Jul 25 09:37:39 2022 DeekshaUpdateElectronicsUsing the DFD to measure PZT TFThe DFD was setup to measure the change
in beatnote when excited. A long long (128in)
cable goes from the SR785 near the DFD all
 ag4395.jpegdfd.jpeg 
  17039   Wed Jul 27 14:39:04 2022 DeekshaUpdateElectronicsNew and improved PZT TF data from the DFDPaco and I messed around with the attenuation
of the scope and bandwidth of the IF. We
also replaced the BNC T's in the
 tf_data.pnglatest_data.zipdfd_-_new.drawio.png 
  17104   Thu Aug 25 15:24:06 2022 PacoHowToElectronicsRFSoC 2x2 board -- fandango[Paco, Chris Stoughton, Leo -- remote]

This morning Chris came over to
the 40m lab to help us get the RFSoC board
 adc0_1137MHz.pngadc1_1137MHz.pngrfdc_PLLsettings.pngclockingwiz_settings.pngblockIPdiag.png 
  33   Tue Oct 30 20:15:24 2007 tobinOtherEnvironmentearthquakeRana, Tobin

Largish (M5.6) earthquake in San Francisco
  
  47   Thu Nov 1 16:42:48 2007 Andrey RodionovSummaryEnvironmentEnd of Daylight Saving Time this weekendUseful information for everyone, as a friendly
reminder:
  
  100   Wed Nov 14 12:33:35 2007 tobinAoGEnvironmentconstructionThe construction crews are running a jack-hammer
right outside of the control room.
 DSC_0172.JPG 
  131   Wed Nov 28 16:18:15 2007 AlbertoMetaphysicsEnvironmentso clean you can eat on itI tidied up the desks in the lab, brought
the Spectrum Analyzers back to the Salumeria
(you don't want to know about that), sorted
 DSC_0180.JPGDSC_0181.JPG 
  212   Sat Dec 22 15:32:11 2007 tobinAoGEnvironmentantsAnts are everywhere: on the PSL table, on
the circuit board I'm soldering...  
 DSC_0361.JPG 
  239   Tue Jan 15 13:15:27 2008 tobinUpdateEnvironmentlots of noiseThey're throwing concrete around at the construction
site.
  
  257   Wed Jan 23 20:52:40 2008 ranaSummaryEnvironmentFlooding from construction areaWe noticed tonight around 7 PM that [B]there
was a lot of brown water in the control room
and also in the interferometer area[/B] mostly
 Shop-Vac_Action.MOVFlooding.pdf 
  290   Fri Feb 1 10:43:05 2008 JohnUpdateEnvironmentConstruction workThe boys next door have some [URL=http://dziban.ligo.caltech.edu:40/40m/?mode=full&reverse=0&reverse=1&npp=20&subtext=hammer]bigger
noisier[/URL] toys.
 DSC_0433.JPG 
  340   Sun Feb 24 10:51:58 2008 tfFrogsEnvironment40m in phdcomics?[url=http://www.phdcomics.com/comics/archive.php?comicid=977][img]http://www.phdcomics.com/comics/archive/phd021308s.gif[/img][/url]   
  374   Thu Mar 13 03:07:19 2008 LisaMetaphysicsEnvironmentCoolness at the 40mMy first (and hopefully not last) week at
the [COLOR=orange]40m lab[/COLOR] is ending
:(
  
  410   Thu Apr 3 18:33:17 2008 AndreySummaryEnvironmentStatus of Weather Station
During the last two days some things related
to weather station have been improved.
  
  414   Fri Apr 4 16:54:06 2008 AndreySummaryEnvironmentWeather station is fully alive
[COLOR=blue]After today's trip to the roof
of our building the weather station seems
 Work_on_the_Roof.pdf 
  666   Mon Jul 14 10:57:00 2008 KojiFrogsEnvironmentSomeone at 40M sent LHO water of lifeSomeone at the 40m sent Mike@LHO a pound of
peets coffee with the name of Koji Arai.
It was a good surprise! Thanks, we will enjoy
  
  716   Tue Jul 22 16:50:09 2008 steveMetaphysicsEnvironmentprofessorial clean up of work benchAtm1: is showing the spiritual satisfaction
after work bench clean up by the professor
himself.
 ranaclup.pngcleanup2.png 
  743   Sun Jul 27 20:25:49 2008 ranaConfigurationEnvironmentOffice Temperature increased to 75 FSince we have the chiller for the PSL chiller
now, [SIZE=2][COLOR=darkred]I've just increased
the office area 
  
  754   Tue Jul 29 11:50:01 2008 JenneUpdateEnvironment5.6 Earthquake Earthquake Details
Magnitude 5.6
Date-Time
  
  1025   Fri Oct 3 19:38:02 2008 robMetaphysicsEnvironmentThe Gatekeeper
Found this lady outside the door of the 40m
lab a few nights ago.
 DSC_0409.JPG 
  1026   Sat Oct 4 07:23:42 2008 KojiMetaphysicsEnvironmentThe GatekeeperHi, this is Koji from Japan.

I am afraid that this is a poisonous spider,
  
  1161   Mon Nov 24 19:15:16 2008 rana, alberto, johnConfigurationEnvironmenttemperatureThe PSL Room Temperature was alarming because
it had gone above 23 C. This set off an unfortunate
chain of events:
  
  1163   Tue Nov 25 19:29:15 2008 rana, alberto, johnConfigurationEnvironmenttemperature[quote]The PSL Room Temperature was alarming
because it had gone above 23 C. This set
off an unfortunate chain of events:
  
  1164   Thu Nov 27 22:56:42 2008 ranaConfigurationEnvironmenttemperature8-)  mc.png 
  1209   Wed Dec 31 22:59:40 2008 YoichiSummaryEnvironmentParticle counts going crazyYes it is a new year's eve, and a lot of crazy
people are on Colorado to secure seats for
the parade tomorrow.
  
  1211   Thu Jan 1 01:07:03 2009 YoichiSummaryEnvironmentParticle counts going crazyI increased the fan speed of the PSL HEPA
filter to the maximum.
  
  1512   Thu Apr 23 18:09:11 2009 YoichiUpdateEnvironmentEffect of cryopumpThe attached is the trend plot of the MC1
accelerometer for 3 days.
It is evident that the seismic level increased
 SeisTrend.pdf 
  1513   Thu Apr 23 21:13:37 2009 YoichiSummaryEnvironmentMag. 4 earthquake in LA tripped the watchdogs of the most optics So far, no damage is noticeable.
restoreWatchdog script was useful :-)
  
  1539   Fri May 1 18:51:34 2009 AlbertoSummaryEnvironmentearthquakeEarthquake 4.4 Leo Carrillo Beach.
Some of the watchdogs tripped out.
  
  1594   Sun May 17 20:50:38 2009 robOmnistructureEnvironmentmag 5.0 earthquake in inglewood2009 May 18  03:39:36 UTC



   Details
  
  1596   Sun May 17 23:22:19 2009 ranaUpdateEnvironmentseisBLRMS for the past 3 weeksLooks like Chris Wipf's fix of using fclose
worked for the NDS client.
The attached plot shows the minute trend
 Untitled.png 
  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 
  1706   Fri Jun 26 19:14:04 2009 ranaUpdateEnvironmentseisBLRMS for the past 3 weeks[COLOR=chocolate][SIZE=2]Restarted the seisBLRMS.m
on mafalda (running a term on op540m). Don't
know why it stopped - the
  
  1730   Fri Jul 10 17:32:08 2009 ranaUpdateEnvironmentseisBLRMS & mafalda restartedRana, Alberto

Mafalda's ethernet cable had fallen out of
  
  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 
  1732   Sun Jul 12 20:05:06 2009 ranaOmnistructureEnvironmentChanged office tempThis is a 7-day minute trend. There's [B]no
obvious effect[/B] in any of the channels
looking back 2 days. 
 Picture_3.png 
  1738   Mon Jul 13 15:48:05 2009 ranaOmnistructureEnvironmentRemoval of the cold air deflection device for the MOPA chillerAround 2 PM today, I removed the blue flap
which has been deflecting the cold air from
the AC down into the laser chiller.
  
  1740   Mon Jul 13 23:03:14 2009 rob, albertoOmnistructureEnvironmentRemoval of the cold air deflection device for the MOPA chiller[quote]Around 2 PM today, I removed the blue
flap which has been deflecting the cold air
from the AC down into the laser chiller.
  
  1741   Tue Jul 14 00:32:46 2009 rob, albertoOmnistructureEnvironmentRemoval of the cold air deflection device for the MOPA chiller[quote][quote]Around 2 PM today, I removed
the blue flap which has been deflecting the
cold air from the AC down into the laser
  
  1745   Tue Jul 14 17:48:20 2009 JenneOmnistructureEnvironmentRemoval of the cold air deflection device for the MOPA chiller[quote][quote][quote]Around 2 PM today, I
removed the blue flap which has been deflecting
the cold air from the AC down into the laser
 ACeffectonLASER2.png 
  1927   Wed Aug 19 02:17:52 2009 ranaOmnistructureEnvironmentControl Room Workstation desks lowered to human heightThere were no injuries...Now we need to
get some new chairs.
  
  2046   Fri Oct 2 18:26:32 2009 robAoGEnvironmentearthquakequake coming through.  I've re-enabled
optic damping (except ETMY), and left off
the oplevs for now.  We can do a resonant-f 
 California_Nevada.gif 
  2059   Tue Oct 6 20:09:50 2009 JenneOmnistructureEnvironmentRF area is clean!I spent part of the afternoon cleaning
up the area next to the Mode Cleaner where
we keep all of our RF stuff:  Attenuators,
 DSC_0894.JPG 
  2060   Tue Oct 6 23:39:54 2009 KojiOmnistructureEnvironmentRF area is clean!Awesome.
I propose that anyone who tries to
do this kind of thoroughgoing cleaning should
  
  2210   Mon Nov 9 12:09:10 2009 AlbertoOmnistructureEnvironmentBNC Cable Laid Down from South End to East VErtexI laid down the floor a BNC cable from
the Y End table to the BNC Chamber. The cable
runs next to the east wall.
 DSC_0986.JPG 
  2213   Mon Nov 9 13:26:19 2009 AlbertoOmnistructureEnvironmentTidying up BNC cables rack around the labWe have thousands of miles of BNC cables
in the lab but we still don't find one when
we need it. I decided to solve the problem.
 DSC_0987.JPG 
  2214   Mon Nov 9 14:53:47 2009 AlbertoOmnistructureEnvironmentTidying up BNC cables rack around the labThis would be a good trial once you put
the label "BNC only" on
the wall.
  
  2216   Mon Nov 9 15:08:29 2009 KojiOmnistructureEnvironmentTidying up BNC cables rack around the lab


   
        
            
  
  2219   Mon Nov 9 16:32:36 2009 AlbertoFrogsEnvironmentShot of the white board yesterday before erasingYesterday Rana and I needed some room on
the white board in the Control Room. We had
to erase some of the stuff present on the
 DSC_0980.JPGDSC_0980.JPG 
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