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  40m Log, Page 324 of 327  Not logged in ELOG logo
ID Date Authordown Type Category Subject Text Attachments
  3506   Wed Sep 1 11:34:39 2010 AlbertoUpdateElectronicsFSS Box Phase Noise from DAQI measured the phase noise of the LO output
of the FSS box from the DAQ. I'm attaching
the results.
 2010-09-01_FSSPhaseNoise.png2010-09-01_FSSphaseNoiseMeasurementSetup.png 
  3509   Wed Sep 1 16:29:28 2010 AlbertoUpdateElectronicsFSS Box Phase Noise from DAQ - Measurement setup modified


   
        
            
 2010-09-01_FSSPhaseNoise_DAQ_00-02_comparison.png2010-09-01_FSSPhaseNoise_DAQ_02.pngFSSphaseNoiseMeasurementSetup02.png 
  3520   Fri Sep 3 11:03:41 2010 AlbertoFrogsElectronicsCable cutting toolsI found this very interesting German maker
of cool cable cutting tools. It's called
Jokari.
  
  3526   Mon Sep 6 10:08:10 2010 AlbertoConfigurationComputersNetgear Network Switch fan broken.The Netgear Network Switch in the top shelf
of Nodus' rack has a broken fan. It is the
one interfaced to the Martian network.
  
  3529   Mon Sep 6 22:09:11 2010 AlbertoUpdateElectronicsRF Frequency Generation Box heat sink installed and testedLast week I noticed that the high power
amplifiers in the Frequency Generation Box
became hot after 2 hours of continuous operation
 DSC_2467.JPG2010-09-06_FreqBoxAmplifierTemperatureTrend.pngDSC_2433.JPG 
  3530   Tue Sep 7 08:56:00 2010 AlbertoUpdateElectronicsFrequency Generation Box Assembly - Phase Noise MeasurementsHere are the results of my phase noise
measurements on the 7 outputs of the Frequency
Generation Box. (BIN=95L applied by DTT).
 2010-09-03_FreqBoxPhaseNoise_AllOutputsComparison_smooth.png2010-09-03_FreqBoxPhaseNoise_AllOutputsComparison_smooth.pdf 
  3532   Tue Sep 7 13:31:49 2010 AlbertoUpdateElectronicsRF System - Frequency Distribution Box - Priority PlanWe need a distribution unit in the LSC
rack to: 1) collect the demod signals coming
from the Frequency Generation Box 2) adjust
 Visio-RFsystem_plan_distributiont.pngRFsystem_plant_distribution_priority.png 
  3535   Tue Sep 7 15:57:07 2010 AlbertoConfigurationComputersNodus connection not working. Fixed[Joe, Alberto]
The Nodus connection to the Martian
network stopped working after someone switched
  
  3537   Tue Sep 7 22:21:17 2010 AlbertoConfigurationComputerselog restarted    
  3552   Thu Sep 9 12:02:03 2010 AlbertoUpdateElectronicsFrequency Generation Box - Amplitude Noise MeasurementsI measured the amplitude noise of the source
outputs and the EOM outputs of the Frequency
Generation box.
 FreqBoxAmplitudeNoiseMeasurementSetup.pngFreqBoxAmplitudeNoise_BusbyBox_AllChannels.png 
  3555   Thu Sep 9 18:53:56 2010 AlbertoConfigurationElectronicsBusby Box, Rai's Box, SR554 in the RF cabinetI stored the Busby Box, the Rai's Box and
the SR554 preamp in the RF cabinet down the
Y arm.
  
  3565   Mon Sep 13 11:40:50 2010 AlbertoUpdateElectronicsFrequency Box Documentation Added to the SVNI uploaded all the material about the RF
frequency Generation Box  into the SVN under
the path:
 freqBoxSVNdierctoryStructure.png 
  3572   Tue Sep 14 18:07:41 2010 AlbertoUpdateElectronicsFrequency Box Documentation Added to the SVNI completed a LIGO document describing
design, construction and characterization
of the RF System for the 40m upgrade.
  
  3764   Fri Oct 22 18:22:27 2010 AlbertoUpdateElectronicsEpic Takeover


   
        
            
  
  3783   Tue Oct 26 07:02:05 2010 AlbertoConfigurationelogELOG 2.8.0 -> ELOG 2.7.5


   
        
            
  
  3893   Thu Nov 11 07:26:03 2010 AlbertoUpdateElectronicsREFL11 Photodiode Not Working


   
        
            
  
  8342   Mon Mar 25 18:58:09 2013 Albert YangUpdateoptical tablesOptical Table ToolboxesFor those of you who spend annoying amounts
of time looking for tools, fear no more.
Toolboxes for each optical table are coming!
  
  8382   Mon Apr 1 16:16:16 2013 AlbertUpdateoptical tablesOptical Table Toolboxes UpdateA heavy duty plastic box is the likeliest
candidate for the optical table toolbox.
It measures 5 9/16 in. x 11 5/8 in. x 4 5/8
  
  8384   Mon Apr 1 16:35:42 2013 AlbertUpdateoptical tablesOptical Table Toolboxes Update

    

       
            
  
  8408   Wed Apr 3 19:01:06 2013 AlbertUpdateoptical tablesOptical Table Toolboxes Update

    

       
            
  
  8445   Thu Apr 11 16:29:23 2013 AlbertUpdateoptical tablesOptical Table Toolboxes Update

    

       
            
 Diagram.png 
  8457   Mon Apr 15 17:44:28 2013 AlbertUpdateoptical tablesOptical Table Toolboxes UpdateI decided to go see what the electrical
tape looks like on the other tools.
These are the tools I felt were necessary
 photo.JPG 
  8502   Mon Apr 29 08:17:40 2013 AlbertUpdateoptical tablesOptical Table Toolboxes Update

    

       
            
  
  8505   Mon Apr 29 15:53:49 2013 AlbertUpdateoptical tablesOptical Table Boxes

    

       
            
 7x 
  3337   Fri Jul 30 19:20:15 2010 AlastairConfigurationGeneralJacket

    
        
  
  3368   Thu Aug 5 16:18:37 2010 AlastairUpdateGeneralclocks still not locked fully - hut removedThe rubidium clocks are still not quite
locked together, though it is clear that
the beat frequency has dropped a lot since
  
  3433   Wed Aug 18 12:02:29 2010 AlastairConfigurationComputerselog had crashed again......I restarted it.   
  3441   Thu Aug 19 09:52:51 2010 AlastairUpdateComputersElog down I restarted it using start-elog-nodus
and this worked out fine - even though I
did it from Pete's on my phone ;-)
  
  3442   Thu Aug 19 11:38:48 2010 AlastairUpdateComputersATF wikiThe ATF wiki page doesn't seem to be working
any more.  Does anyone know where this
is held so we can try to get it back online? 
  
  3443   Thu Aug 19 12:06:07 2010 AlastairUpdateComputersATF wiki


   
        
            
  
  3452   Fri Aug 20 20:36:05 2010 AlastairUpdateGeneralElog Elog was down, I restarted it.   
  3461   Tue Aug 24 06:34:01 2010 AlastairUpdateGeneralElog......was down.  Have restarted it.   
  3475   Fri Aug 27 07:21:13 2010 AlastairUpdateGeneralelog... was down.  I restarted the version
in the 2.7.5 folder.  It went down again
almost immediately but stayed up after the
  
  4563   Mon Apr 25 11:23:41 2011 AlastairBureaucracyComputerswiki?40m wiki seems to have been down for quite
a while now but I can't see any info in the
elog about it.  Is there some ongoing
 119427.strip.gif 
  4566   Mon Apr 25 12:55:35 2011 AlastairBureaucracyComputerswiki?


   
        
            
  
  4897   Tue Jun 28 11:25:56 2011 AlastairBureaucracyComputersrestarted elogThe manual instructions on the 40m wiki
for restarting wouldn't work.  I killed
the process okay, but then I got an error
  
  306   Sun Feb 10 20:47:01 2008 AlanSummarySUSAll watchdogs trippedA moderate earthquake occurred at 11:12:06
PM (PST) on Friday, February 8, 2008.
The magnitude 5.1 event occurred 21 km (13
  
  1058   Mon Oct 20 12:18:38 2008 AlanUpdateComputer Scripts / Programsburtwb missing on Solaris but installed on linux64[quote]c1lsc stalled this evening, so I powercycled
it.
After that, I tried to lock arms to confirm
  
  1060   Mon Oct 20 16:18:00 2008 AlanConfigurationComputers/cvs/cds restored[quote]I moved missing files in /cvs/cds restored
by Alan and Stuart to the original locations.
I confirmed autoburt runs, and dtt, which
  
  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
  
  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
  
  1564   Fri May 8 10:05:40 2009 AlanOmnistructureComputersRestarted backup since fb40m was rebootedRestarted backup since fb40m was rebooted.   
  1756   Thu Jul 16 09:49:52 2009 AlanUpdateComputersfb40m


   
        
            
  
  1910   Sat Aug 15 10:36:02 2009 AlanHowToComputersnodus boot procedure[quote]The restart procedures for the various
processes running on nodus are explained
here:
  
  2445   Tue Dec 22 13:14:37 2009 AlanOmnistructurePEMmiracle in the 40m


   
        
            
  
  10020   Tue Jun 10 12:49:46 2014 AkhilUpdateComputer Scripts / ProgramsInterfacing UFC-6000 with Raspberry Pi completed Goal:
 To interface the Mini Circuits
RF Frequency Counter(FC) Model UFC-6000 with
 Interfacing_Script.zip 
  10036   Fri Jun 13 11:33:55 2014 AkhilUpdateElectronicsCharacterization of UFC-6000 RF Frequency Counter Goal:
To characterize the Mini-Circuits
RF FC (Model UFC-6000) and plot Bode Plots
 Bode_Plots.zip 
  10070   Thu Jun 19 12:10:18 2014 AkhilUpdateElectronicsGain plots to Characterize UFC-6000 RF Frequency CounterThe
goal is to characterize the Mini-Circuits
RF FC (Model UFC-6000)  by plotting
 GainVsFreq.png 
  10096   Wed Jun 25 01:18:24 2014 AkhilUpdateelogWeekly Update Plans
for the Week:

    Phase and noise characterization
  
ELOG V3.1.3-