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ID Date Author Type Categoryup Subject Text Attachments
  10311   Thu Jul 31 21:21:49 2014 KojiFrogselogMicroSoft BingBot is attacking usOh,
this is cool! Thanks!
I could not figure out how to place
  
  10827   Mon Dec 22 13:34:34 2014 KojiUpdateelogStrange ELOG serachI tried to find my own entry and faced
with a strange behavior of the elog.
The search button invoked the following
  
  10830   Mon Dec 22 16:21:15 2014 ericqUpdateelogStrange ELOG searchIn order to fix ELOG search, I have started
running ELOG v2.9.2 on Nodus.
Sadly,
  
  10839   Tue Dec 23 16:49:32 2014 ericqUpdateelogStrange ELOG search So, despite having registered users,
it turns out that the "Author"
field is still open for editing when making
  
  11002   Wed Feb 11 16:49:41 2015 ranaUpdateelogELOGD restartedNo elog
response from outside and no elogd process
  
  11251   Sun Apr 26 00:08:56 2015 ranaHowToelogTroubles with putting plots in external locationsIf it all possible, don't use links
to your home directory. Its not robust. It
would be like if you clicked on your Google
 48.png 
  12049   Sat Mar 26 18:28:24 2016 KojiUpdateelogelogd flakinessElogd have been restarted several times
today because it died everytime I submit
something.
  
  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
  
  13879   Tue May 22 17:29:27 2018 keerthanaUpdateelogMEDM Diagram for the auxilary laser system control and display.(keerthana, gautam, jon)

In the morning, Jon gave me an
overview of the Auxiliary laser system which
 MEDM_aux.png 
  13926   Thu Jun 7 14:35:26 2018 keerthanaUpdateelogTable- useful for doing the scanning.I think this table will help us to fix
the scanning range of the Marconi frequency.
This will also help in predicting the position
  
  13938   Mon Jun 11 11:45:13 2018 keerthana UpdateelogComparison of the analytical and finesse values of TMS and FSR.


Quantity
 finesse1.pdf 
  13941   Mon Jun 11 18:10:51 2018 Koji UpdateelogComparison of the analytical and finesse values of TMS and FSR.Hmm? What is the definition of the percentage
error? I don't obtain these numbers from
the given values.
  
  13943   Mon Jun 11 19:16:49 2018 keerthanaUpdateelogComparison of the analytical and finesse values of TMS and FSR.The percentage error which I found out
=[(analytical value - finesse value)/analytical
value]*100
 fitting_1.pdf 
  13944   Mon Jun 11 22:05:03 2018 KojiUpdateelogComparison of the analytical and finesse values of TMS and FSR.> The percentage error which I found
out =[(analytical value - finesse value)/analytical
value]*100
  
  13945   Mon Jun 11 22:18:18 2018 keerthanaUpdateelogComparison of the analytical and finesse values of TMS and FSR.Oopss !! I made a mistake while taking
the values from my notes. Sorry.

  
  13954   Wed Jun 13 11:59:03 2018 keerthanaUpdateelogcommand line enabled code for frequency scanningI have modified the code for frequency
scanning and have made it completely command
line enabled. The code is written in python.
  
  13995   Thu Jun 21 13:24:00 2018 keerthanaUpdateelogThe cavity scan data of June 20(Jon, Keerthana, Sandrine)

We tried to align the AUX and PSL
laser yesterday. We collected the data from
 AS110_Beat.pdfYEND_Beat.pdf 
  14039   Thu Jul 5 17:33:36 2018 keerthana, sandrineUpdateelogLights not working
N/S ARM FL.
N/S ARM
INC.


These two lights inside
the 40m-lab are not working.
  
  14040   Thu Jul 5 17:58:04 2018 keerthana, sandrineUpdateelog (Analisa, Sandrine, Keerthana)

Today Annalisa helped us to understand
the new set up used to make the frequency
 setup1.jpgsetup2.jpg 
  14057   Thu Jul 12 14:06:39 2018 keerthanaUpdateelogFinesse and Analytical solution - ComparisonI tried to compare the cavity scan data
we get from the Finesse simulation and that
we expect from the Analytical solution. The
 finesse_cavity.pngAnalytical1.pdfFinesse_Analytical.pdfDifference.pdf 
  14336   Fri Dec 7 19:42:47 2018 ranaFrogselogcan't upgrade DokuWiki because of PHP / SL7All of our wikis (except the 40m one which
unfortunately got turned into ligo.org mess)
use DokuWiki. This now has an auto-upgrade
  
  15274   Fri Mar 13 12:48:47 2020 Larry WallaceUpdateelogCert RenewalUpdated the cert in /etc/httpd/ssl.
The new cert is good until March 12, 2022.
  
  16041   Fri Apr 16 11:31:00 2021 ranaUpdateelogelog stuck ~10 AM todayfound it unresponsive. Restarted fine using
procedure documented in wiki
  
  8606   Tue May 21 17:03:45 2013 SteveUpdateendtable upgradeenclosure tops are sealed

    

       
            
 ETMYoptable.jpgsurgtubclamps.jpgquickrelease.jpgreinforcbridge.jpg 
  8628   Thu May 23 12:02:48 2013 SteveUpdateendtable upgradeETMY - oplev Temporary oplev in place. The spot
on the qpd is still big. My two lens solution
did not work.
 ETMYopl.jpg 
  8655   Thu May 30 11:10:00 2013 SteveUpdateendtable upgradeETMY - oplev

    

       
            
 ETMYoplev.jpg 
  8660   Thu May 30 20:45:53 2013 AnnalisaUpdateendtable upgradeETMY - oplev

    

       
            
  
  8662   Fri May 31 11:15:01 2013 AnnalisaUpdateendtable upgradeETMY - Mode Matching for green - new calculation Since the beam waist after the Faraday
had changed since the last time I measured
it (maybe alignment changed a bit), I made
  
  8669   Tue Jun 4 10:44:13 2013 SteveUpdateendtable upgradePI pzt holders are readyThe PI pzt holders are back from the shop.
They are numbered 1, 2 & 3 and machined
to match.
 PIpztholders.jpg 
  8685   Thu Jun 6 09:58:13 2013 SteveUpdateendtable upgradeenclosure to chamber connection 
 Thin
wall connector from McMCarr#55275K25
 thinwallconnector.jpg06061301.PDF 
  8746   Tue Jun 25 19:18:07 2013 gautamConfigurationendtable upgradeplan of action for PZT installation  This entry is
meant to be a sort of inventory check and
  
  8800   Wed Jul 3 21:19:04 2013 gautamConfigurationendtable upgradeplan of action for PZT installation This is an update on the situation
as far as PZT installation is concerned.
I measured the required cable (PZT driver
 DAC_bank.pngASC_schematic.pdf 
  8804   Mon Jul 8 13:45:19 2013 gautamConfigurationendtable upgradeDriver board verificationWith the help of an expansion card,  I
verified that the + 15V and + 24V
from the eurocrate in the slot I've identified
  
  8823   Wed Jul 10 22:41:06 2013 gautamConfigurationendtable upgradePZT Driver Board I
did the following with the 
 HV_Amplifier.pdf 
  8827   Thu Jul 11 09:15:10 2013 SteveUpdateendtable upgradeETMY optable groundedETMY optical table top was grounded to
the ETMY chamber through 1 Mohms this morning.
I  also strain releifed
  
  8845   Mon Jul 15 11:51:18 2013 gautamConfigurationendtable upgradeDAC at 1Y4-Max Output and Power Spectrum Summary:
I measured the maximum output of
the DAC at 1Y4 as well as its power spectrum.
 max_amp.JPGmax_amp_all_channels.JPGDACOffPowerSpec.pdfDACOnPowerSpec.pdfDAC2kPowerSpectrum.pdf 
  8846   Mon Jul 15 13:51:17 2013 KojiConfigurationendtable upgradeDAC at 1Y4-Max Output and Power SpectrumWe need the unit of the voltage power spectrum
density to be V/sqrt(Hz).
  
  8848   Mon Jul 15 15:54:20 2013 gautamConfigurationendtable upgradeDAC at 1Y4- Power Spectrum -with the right units

    

       
            
 DACOffPSD.pdfDAC500PSD.pdfDAC2000PSD.pdf 
  8852   Mon Jul 15 17:20:43 2013 JenneConfigurationendtable upgradeDAC at 1Y4- Power Spectrum -with the right unitsThose 'peaks' for the oscillations seem
ridiculously broad.  I think you should
look again, really quickly, with smaller
  
  8853   Mon Jul 15 17:59:31 2013 gautamConfigurationendtable upgradeDAC at 1Y4- Power Spectrum -6.4kHz bandwidth

    

       
            
 DAC-6.4_kHz_BW_PSD.pdf 
  8857   Tue Jul 16 14:51:09 2013 gautamConfigurationendtable upgradeAI Board-D000186-Modified notches I tried shifting the notch frequencies
on the D000186-revision D board given to
me by Koji. The existing notches were at
 D000186_Frequency_Response.pdf 
  8873   Thu Jul 18 19:09:08 2013 gautamConfigurationendtable upgradeQPD Calibration for PZT CalibrationSummary 
I have been working on setting up
a QPD which can eventually be used to calibrate
 QPD-XCalib.pdfQPD-YCalib.pdfError_Function_Fitting.zip 
  8874   Thu Jul 18 20:20:52 2013 gautamConfigurationendtable upgradeFirst mirror glued to PZT and mounted in modified mounts 
 Yesterday,
I mounted the first PZT in one of the modified
 Piezo-mirror.jpg 
  8875   Thu Jul 18 21:12:58 2013 gautamConfigurationendtable upgradeAI Board-D000186-All channels modified 
 I carried some further modifications
and tests to the AI Board. Details and observations
 AI_Board_Output.jpg 
  8877   Thu Jul 18 23:34:40 2013 gautamConfigurationendtable upgradeCoarse adjustment of PZT axes orientation in mount I have
managed to orient the PZT in the mount such
that its axes are approximately aligned with
 PZT_out_waveform.jpg 
  8883   Fri Jul 19 22:51:40 2013 gautamConfigurationendtable upgradeSecond mirror glued to PZT and mounted  
I
 Piezo-mirror_2.JPG 
  8884   Fri Jul 19 23:35:31 2013 gautamConfigurationendtable upgradePreliminary Calibration of PZT I recalibrated
the QPD today as I had shifted its position
a little. I then identified the linear range
 QPD-XCalib.pdfQPD-YCalib.pdfPiezo_Yaw_Calib-in_QPD_linear_range-Pitch_tilt.pdfPiezo_Yaw_Calib-in_QPD_linear_range-Yaw_tilt.pdf 
  8892   Mon Jul 22 17:17:30 2013 annalisaUpdateendtable upgradeEnd table picture   YendTable.jpg 
  8896   Tue Jul 23 00:51:46 2013 KojiUpdateendtable upgradeEnd table pictureThe spot on the IPANG QPD was checked.
The spot is higher than the center and South
side of the lens.
 P7224222.JPGP7224223.JPGP7224224.JPGP7224238.JPG 
  8910   Tue Jul 23 19:37:08 2013 AnnalisaUpdateendtable upgradeEnd table picture

    

       
            
 IMG950073.jpgIMG950072.jpg 
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