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ID Date Author Type Category Subjectup Text Attachments
  11889   Thu Dec 17 01:55:16 2015 ericqUpdateLSCUncooperative AUX X[ericq, Gautam]

We were not able to fix the excess
frequency noise of the AUX X laser by the
  
  11892   Fri Dec 18 17:37:04 2015 ranaUpdateLSCUncooperative AUX XHere's how we should diagnose the EX
laser:


Compare IR RIN of laser
  
  10912   Fri Jan 16 04:14:38 2015 ericqUpdateCDSUnexpected CDS behaviorEDIT: Sleepy Eric doesn't
understand loops. The conditions for this
observation included active oplev loops.
 digitalProblem.pdf 
  2902   Mon May 10 16:59:35 2010 AlbertoUpdate40m UpgradingUnexpected oscilaltionin the POY11 PDThe measured transimpedance of the latest
POY11 PD matches my model very well up to
100 MHz. But at about ~216MHz I have a resonance
 2010-05-10_POY11_CalibratedOpticalResponse0-500MHz.pngPOX11.png 
  2904   Mon May 10 18:56:53 2010 ranaUpdateElectronicsUnexpected oscilaltionin the POY11 PDWhere did you get the 55nH based notch
from? I don't remember anything like that
from the other LSC PD schematics. This is
  
  2905   Mon May 10 19:09:45 2010 ranaUpdateElectronicsUnexpected oscilaltionin the POY11 PD


   
        
            
  
  10567   Mon Oct 6 10:04:58 2014 manasaUpdateGeneralUnexpected power shutdownWe had a unexpected    
  10568   Mon Oct 6 10:23:43 2014 SteveUpdateVACUnexpected power shutdown

    

       
            
  
  10569   Mon Oct 6 10:28:18 2014 manasaUpdateGeneralUnexpected power shutdown

    

       
            
  
  10571   Mon Oct 6 17:04:51 2014 ericqUpdateGeneralUnexpected power shutdownI brought back the PMC, MC and Arms.
PMC:

    Same as when we replaced
  
  10572   Mon Oct 6 17:36:17 2014 ericqUpdateGeneralUnexpected power shutdownThe autolocker is now working, but I didn't
change anything to make it so. I was just
putting in some echo statements, to see where
  
  10573   Mon Oct 6 18:15:12 2014 manasaUpdateGeneralUnexpected power shutdown: end green alignmentAfter Q brought back the IR, I went to
check the green situation.
1. The end lasers had to be turned
  
  10570   Mon Oct 6 11:09:52 2014 JenneUpdateGeneralUnexpected power shutdown: slow computersAs per other slow computers, which Chris
figured out in elog
10189, I added all the rest of the slow
  
  10579   Tue Oct 7 16:55:16 2014 SteveUpdateVACUnexpected sweaty valves Pump  spool valves V5, V4, V3
sweating a lot. VM3 and VC2 not so much.
 sweatyV5.jpgsweatyV5f.jpg 
  3643   Mon Oct 4 13:48:41 2010 Leo SingerConfigurationComputersUninstalled gstreamer-devel and gstreamer-plugins-base-devel on rosalba I uninstalled gstreamer-devel and
gst-plugins-base-devel on Rosalba.  Here
is the command I ran:
  
  2421   Wed Dec 16 11:21:20 2009 AlbertoUpdateABSLUniversal PDH Box Servo FiltersYesterday I measured the shape of the
servo filter of both the old and the new
Universal PDH boxes.
Here they
 NewandOlfFilterTF.pngNewandOlfFilterTF.png 
  2423   Wed Dec 16 11:55:47 2009 ranaUpdateABSLUniversal PDH Box Servo Filters 
 To me, they both look stable.
I guess that the phase has to go to -180
  
  2476   Tue Jan 5 09:18:38 2010 AlbertoOmnistructureElectronicsUniversal PDH Box Stored in the RF CabinetFYI: I stored the Universal PDH boxes in
the RF cabiner in the Y arm.
  
  8789   Tue Jul 2 00:25:14 2013 gautamUpdateGreen LockingUniversal PDH box tuning [Koji, Annalisa, Gautam]
Annalisa noticed that over the weekend
the Y-arm green PDH was locked to a sideband,
 circuit.pdfmodel.pdf 
  8548   Wed May 8 16:10:09 2013 JamieUpdateCDSUnknown DAQ channels in c1sus c1x02 IOP?Someone for some reason added full-rate
DAQ specification to some ADC3 channels in
the c1sus IOP model (c1x02):
  
  2150   Tue Oct 27 17:58:25 2009 JenneConfigurationPEMUnknown PEM channels in the PEM-ADCU?Does anyone know what the channels plugged
in to the PEM ADCU, channels 5,6,7,8 are? 
They aren't listed in the C1ADCU_PEM.ini
  
  13949   Tue Jun 12 14:47:37 2018 gautamBureaucracyGeneralUnlabelled components from EX moved to SP table and labelledSteve mentioned two unlabelled optics were
found at EX, relics from the Endtable upgrade.


One was a 1" 45 deg
  
  1528   Tue Apr 28 12:55:57 2009 CarynDAQPEMUnplugged Guralp channelsFor the purpose of testing out the temperature
sensors, I stole the PEM-SEIS_MC1X,Y,Z channels.
I unplugged Guralp NS1b, Guralp Vert1b,
  
  1571   Sun May 10 13:34:32 2009 carynUpdatePEMUnplugged Guralp channelsI unplugged Guralp EW1b and Guralp Vert1b
and plugged in temp sensors temporarily.
Guralp NS1b is still plugged in.
  
  1597   Mon May 18 01:54:35 2009 ranaUpdatePEMUnplugged Guralp channelsTo see if Caryn's data dropouts were happening,
I looked at a trend of all of our temperature
channels. Looks OK now.
 Untitled.png 
  1647   Wed Jun 3 11:28:01 2009 carynUpdatePEMUnplugged Guralp channels     
  9260   Wed Oct 23 00:05:17 2013 manasaUpdateSUSUnstable Y arm ALS points to problems with ETMY suspension[Masayuki, Manasa]

Looking into control signals and error
 Y-SUS_All.png 
  14407   Fri Jan 18 21:34:18 2019 gautamUpdateSUSUnused optic on EY tableDoes anyone know what the purpose of the
indicated optic in Attachment #1 is? 
 IMG_5408.JPG 
  14408   Sat Jan 19 05:07:45 2019 KojiUpdateSUSUnused optic on EY tableI don't think it was used. It is not
on the diagram too. You can remove it.
  
  8986   Thu Aug 8 11:18:46 2013 manasaUpdateComputer Scripts / ProgramsUnused scripts in ASS movedI was receiving missing path error when
I was trying to measure the MC spot positions.
Jenne pointed out that Koji had moved all
  
  15005   Sat Nov 2 16:36:55 2019 YehonathanUpdatePSLUp to date sketch of the 1x1 and 1x2 EurocratesI reproduced Gautam's sketch of the
1x1 and 1x2 Eurocrates into a pdf image
that contains links to the appropriate DCCs
 1x1_1X2_Eurocrates_with_links.pdf 
  15006   Sat Nov 2 17:08:34 2019 YehonathanUpdatePSLUp to date sketch of the 1x1 and 1x2 EurocratesThanks. Please update this wiki page too.

https://wiki-40m.ligo.caltech.edu/Electronics/ElectronicsRacks#A1X1
  
  15008   Mon Nov 4 13:26:04 2019 YehonathanUpdatePSLUp to date sketch of the 1x1 and 1x2 EurocratesDone.




  
  4732   Tue May 17 17:01:22 2011 jamieConfigurationCDSUpdate LSC channels from _DAQ to _DQAs of RCG version 2.1, recorded channels
use the suffix "_DQ", instead of
"_DAQ".  I just rebuilt and
  
  14053   Wed Jul 11 16:50:34 2018 poojaUpdateCamerasUpdate in developing neural networksAim: To develop a neural
network that resolves mirror motion from
 graphs.pdf 
  14070   Fri Jul 13 23:23:49 2018 poojaUpdateCamerasUpdate in developing neural networksAim: To develop a neural
network that resolves mirror motion from
 nn_simulation_2_nodes4_lr0p00001_beta1_0p8_beta2_0p85.pdfnn_simulation_2_nodes8_lr0p00001_beta1_0p8_beta2_0p85.pdf 
  14089   Thu Jul 19 18:09:17 2018 poojaUpdateCamerasUpdate in developing neural networksAim: To develop a neural
network that resolves mirror motion from
 nn_simulation_mlt_sine_nodes4_lr0p00001_beta1_0p8_beta2_0p85_marked.pdfnn_simulation_2_nodes4_target-1to1_marked.pdf 
  12143   Wed Jun 1 11:19:14 2016 VarunUpdateGeneralUpdate of work till nowCompleted:

Wrote and tested a code for AGC
using cavity transmission signal and length
  
  215   Thu Dec 27 12:12:02 2007 pkpUpdate Update on GigE CameraSo I finally got the linux software to compile
on mafalda. I got the software to dump all
the information regarding the camera onto
  
  217   Thu Dec 27 18:18:56 2007 ranaUpdateComputersUpdate on GigE Camera[quote]So I finally got the linux software
to compile on mafalda. I got the software
to dump all the information regarding the
  
  13914   Mon Jun 4 11:34:05 2018 Jon RichardsonUpdateCamerasUpdate on GigE CamerasI spent a day trying to modify
Joe B.'s LLO camera client-server code
without ultimate success. His codes now runs
  
  13917   Tue Jun 5 20:31:42 2018 ranaUpdateCamerasUpdate on GigE CamerasAha! Video is back!

I think it would be good to add
a flag whereby the video can be saved to
  
  1566   Fri May 8 16:03:31 2009 JenneUpdatePEMUpdate on Jenne's Filtering StuffTo include the plots that I've been working
on in some form other than on my computer,
here they are:
 H1S5OneMonthWienerCompBLACK.pngH1S5BandLimitedTimePlot.png 
  2166   Sun Nov 1 17:58:44 2009 JenneUpdateGeneralUpdate on Video SwitchThe current update on the Chameleon video
switch is: no progress.
I connected the old laptop that Rob/Steve
  
  4434   Wed Mar 23 16:06:20 2011 Larisa ThorneUpdateElectronicsUpdate on cable laying [Steve, Suresh, Larisa]
The following cables were laid today:
ETMYT, ETMY, IFOPO, MC1, OMCR, AS Spare,
  
  13125   Wed Jul 19 08:37:21 2017 JamieUpdateCDSUpdate on front-end/DAQ rebuild After the catastrophic fb disk failure
last week we lost essentially the entire
front end system (not any of the userapp
  
  13127   Wed Jul 19 14:26:50 2017 JamieUpdateCDSUpdate on front-end/DAQ rebuild  




  
  13130   Fri Jul 21 18:03:17 2017 JamieUpdateCDSUpdate on front-end/DAQ rebuild Update:


front ends booting with
the new Debian jessie diskless root image
  
  14885   Mon Sep 16 20:22:19 2019 gautamSummaryCDSUpdate on the Acromag status
Jordan (new Engineer) and Chub
neatened out the cabling at 1Y2/1Y3 today.
After their work, I plugged in all the Dsubs
 acromagChecklist.pdf 
  4764   Wed May 25 19:03:59 2011 JamieConfigurationCDSUpdate rtcds checkout of cds_user_apps with new top-level directory names.The top-level subsystem subdirectories
in the cds_user_apps source repository were
renamed today to be all lower case. 
  
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