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  40m Log, Page 242 of 344  Not logged in ELOG logo
ID Date Authorup Type Category Subject Text Attachments
  12191   Thu Jun 16 16:11:11 2016 jamieUpdateCDSupgrade aborted for nowAfter poking at the new configuration more,
it also started to show instability. 
I couldn't figure out how to make test
  
  12201   Mon Jun 20 11:19:41 2016 jamieConfigurationCDSGPS receiver not resetting properly


  
  12202   Mon Jun 20 14:03:04 2016 jamieConfigurationCDSEndRun GPS receiver upgraded, fixedI
just upgraded the EndRun Technologies Tempus
LX GPS receiver timing unit, and it seems
 GPSreceiverWorking.jpg 
  12724   Mon Jan 16 22:03:30 2017 jamieConfigurationComputersMegatron update


  
  12763   Fri Jan 27 17:49:41 2017 jamieUpdateCDStest of new daqd code on fb1Just FYI I'm running a test of updated
daqd code on fb1. 

fb1 has it's own fiber to the
  
  12769   Sat Jan 28 12:05:57 2017 jamieUpdateCDStest of new daqd code on fb1


  
  12770   Mon Jan 30 18:41:41 2017 jamieUpdateCDSTEST ABORTED of new daqd code on fb1I just aborted the fb1 test and reverted
everything to the nominal configuration. 
Everything looks to be operating nominally. 
  
  12794   Fri Feb 3 11:03:06 2017 jamieUpdateCDSmore testing fb1; DAQ DOWN DURING TESTMore testing of fb1 today.  DAQ DOWN
UNTIL FURTHER NOTICE.

Testing Wednesday did not resolve
  
  12798   Sat Feb 4 12:20:39 2017 jamieSummaryCDS/cvs/cds/caltech/chans back on svn1.6


  
  12799   Sat Feb 4 12:29:20 2017 jamieSummaryCDS/cvs/cds/caltech/chans back on svn1.6No, not confused on that point. We just
will not be testing OS versions at the 40m
or running multiple OS's on our workstations.
  
  12800   Sat Feb 4 12:50:01 2017 jamieSummaryCDS/cvs/cds/caltech/chans back on svn1.6


  
  13108   Mon Jul 10 21:03:48 2017 jamieUpdateGeneralAll FEs down 




  
  13115   Wed Jul 12 14:52:32 2017 jamieUpdateGeneralAll FEs downI just want to mention that the situation
is actually much more dire than we originally
thought.  The diskless NFS root filesystem
  
  13151   Sat Jul 29 16:24:55 2017 jamieUpdateGeneralPSL StripTool flatlined


  
  13340   Thu Sep 28 11:13:32 2017 jamieUpdateCDS40m files backup situation 




  
  13344   Fri Sep 29 09:43:52 2017 jamieHowToCDSpyawg 




  
  13350   Mon Oct 2 18:50:55 2017 jamieUpdateCDSc1ioo DC errors


  
  13383   Tue Oct 17 17:53:25 2017 jamieSummaryLSCprep for tests of Gabriele's neural network cavity length reconstructionI've been preparing for testing Gabriele's
deep
neural network MICH/PRCL reconstruction.
 c1dnn.png 
  13386   Wed Oct 18 01:41:32 2017 jamieUpdateCDSFEs unresponsive


  
  13388   Wed Oct 18 09:21:22 2017 jamieUpdateCDSFEs unresponsive


  
  13390   Wed Oct 18 12:14:08 2017 jamieSummaryLSCprep for tests of Gabriele's neural network cavity length reconstruction


  
  13395   Thu Oct 19 15:42:03 2017 jamieSummaryLSCMICH/PRCL reconstruction neural network running on c1lscGabriele's
PRCL/MICH reconstruction neural network is
now running on c1lsc. 
 NN.pngC1DNN_GDS.pngC1DNN_CPU_METER.png 
  13400   Tue Oct 24 20:14:21 2017 jamieSummaryLSCfurther testing of c1dnn integration; plugged in to DAQIn order to try to isolate CPU6 for the
c1dnn neural network reconstruction model,
I set the CPUAffinity in /etc/systemd/system.conf
 NN.pngc1dnn_out.png 
  13411   Mon Nov 6 18:22:48 2017 jamieSummaryLSCcurrent procedure for running c1dnn codeThis is the current procedure to start
the c1dnn model:

  
  13480   Fri Dec 15 01:53:37 2017 jamieUpdateCDSCDS recovery, NFS woes


Quote:


  
  16325   Tue Sep 14 15:57:05 2021 jamieFrogsCDSfb1 /var full after reboot, caused all sorts of problems/var on fb1 filled up today, which caused
all sorts of CDS issues.  I found out
about the problem by reading the logs of
  
  16327   Tue Sep 14 16:44:54 2021 jamieFrogsCDSfb1 /var full after reboot, caused all sorts of problemsJonathan Hanks pointed me to this fix to
the gpstime kernel module that was unfortunately
put in after the 3.4 release that we're
  
  9786   Mon Apr 7 15:26:32 2014 jamie, ericqUpdateCDSaborted attempt to update c1sus machine with second CPUThis morning we attempted to replace the
c1sus front end machine with a spare that
had been given a second CPU, and therefore
 Screenshot-Untitled_Window.png 
  5248   Tue Aug 16 11:49:17 2011 jamie, jenneUpdateGeneraltoday's work to do>If necessary steer ETMs and ITMs to
make the X and Y green beam flashing.
Green is now flashing in both X and
  
  7235   Mon Aug 20 13:10:31 2012 jamie, jenneUpdateSUSETMX is not happy

    

       
            
  
  7671   Mon Nov 5 19:38:52 2012 jamie, jenne, ayaka, denUpdateAlignmentmore alignment woesEarlier this morning we thought things
were looking pretty good.  IPPOS, IPANG,
and the AS and REFL spots looked like they
  
  5288   Tue Aug 23 14:49:14 2011 jamie, jenne, kiwamu, suresh, keikoUpdateSUSAdjustment of ETMY, issue with ITMY whiteningBefore lunch we took a closer look at two
of the suspensions that were most problematic:
ITMY and ETMY.  Over lunch we took new
 ITMY.pngETMY.png 
  5295   Wed Aug 24 11:30:27 2011 jamie, jenne, kiwamu, suresh, steveUpdateSUSETMX wiped, replaced, door onWe've closed up ETMX:

    the optic was drag wiped

   the suspension tower was put back
  
  5296   Wed Aug 24 11:40:21 2011 jamie, jenne, kiwamu, suresh, steveUpdateSUSproblem with ITMXITMX was drag wiped, and the suspension
was put back into place.  However, after
removing all of the earthquake stops we found
  
  5259   Thu Aug 18 00:53:48 2011 jamie, kiwamu, suresh, jenneUpdateGeneralPUMP PLAN ABORTED; need to work more on IFO alignmentWe have decided that
the IFO alignment is bad enough that we're
not ready to pump down.  PUMP ABORTED.
The
 Beam_spot_shifts.png 
  5258   Wed Aug 17 20:14:49 2011 jamie, kiwamu, suresh, jenne, keiko, anamariaUpdateGeneralin-vacuum work status, prep for pumpThis afternoon's work:

    OSEMs were adjusted on
all suspended optics.
    X and
  
  7599   Tue Oct 23 17:30:33 2012 jamie, nic, jenne, raji, manasaUpdateAlignmentInitial attempts to fix IFO alignmentWe went into the vertex today to see about
fixing the alignment.  The in-air access
connector is in place, and we took heavy
  
  9276   Thu Oct 24 09:08:27 2013 jamie.UpdateLSCPRMI + 2 ALS armsnice.   
  1898   Thu Aug 13 11:20:43 2009 janoschHowToPEMthree-channel self-noise estimationThere are two new Matlab files on the svn
in /mDV/extra/C1. 'mycsd.m' is to calculate
the cross-spectral density between two channels,
  
  7029   Wed Jul 25 15:33:55 2012 janoschUpdateLSCringdown measurementWe did our first ringdown measurement on
the Y arm. First we tried to keep the arm
locked in green during the ringdown, but
 Rindown1.png 
  7038   Thu Jul 26 13:10:51 2012 janoschUpdateLSCmodelled ringdownWe fitted shutter and ringdown functions
to the ringdown data. It is not perfectly
clear how the power change due to the shutter
 Ringdown.png 
  7301   Tue Aug 28 18:28:21 2012 janoschMetaphysicsRingdownripples Let's see if the ripples observed
in the MC ringdown can be due to tilt
motion of the mirrors.
  
  7303   Tue Aug 28 19:21:37 2012 janoschMetaphysicsRingdownripples Hmm. I don't know what ringing really
is. Ok, let's assume it has to
do with the pump... I don't see how
  
  7305   Wed Aug 29 09:35:03 2012 janoschMetaphysicsRingdownripples 2Ok, so the whole idea that mirror motion
can explain the ripples is nonsense. At least,
when you think off the ringdown with
  
  7356   Fri Sep 7 00:08:10 2012 janoschMetaphysics baffle clipping lossWith a curvature radius of about 57m
for the ETMs, flat ITMs at the beam waist,
and using 39m for the arm lengths, one finds
  
  7480   Thu Oct 4 18:48:04 2012 janoschConfigurationPSLAOM installation
  
  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
  
  7533   Thu Oct 11 21:26:40 2012 janoschUpdateGeneralPRC phase mapsJust some plots. There is nothing new here
except for the fact that I learned how to analyze
phase maps myself and how to prepare them
 7x 
  7615   Wed Oct 24 22:48:46 2012 janoschUpdateComputer Scripts / ProgramsPhase map summary of LaserOptik mirrors
  
  7627   Thu Oct 25 22:52:07 2012 janoschUpdateGeneraltip-tilt phase mapsNow that I read Koji's last elog about
phase maps, I am not sure if these are still
required, but here they are (the tilt-removed
 6x 
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