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  40m Log, Page 84 of 346  Not logged in ELOG logo
ID Date Author Type Category Subjectup Text Attachments
  8338   Mon Mar 25 16:51:43 2013 ChloeUpdate Final QPD Circuit DesignThis is the final version of the QPD circuit
I'm going to build. After playing around
with the spatial arrangement, this should
 IMG-20130325-00244.jpg 
  11535   Fri Aug 28 00:59:55 2015 IgnacioUpdateIOOFinal SISO FF Wiener Filter for MCLThis is my
final
 bode.png2.png3.png4.png6.png 
  14764   Tue Jul 16 15:17:57 2019 KojiHowToCDSFinal bit bug of the BIO CDS module Yutaro talked about the BIO bug in KAGRA
elog. http://klog.icrr.u-tokyo.ac.jp/osl/?r=9536

I think I made the similar change
  
  14890   Tue Sep 17 14:43:59 2019 gautamHowToCDSFinal bit bug of the BIO CDS module Came across this while looking up the BIO
situation at 1Y2. For reference, the fix
Koji mentions can be seen in the attached
 Screen_Shot_2019-09-17_at_2.44.41_PM.png 
  14941   Fri Oct 4 22:22:03 2019 gautamUpdateCDSFinal incarnation of latch.py[KA, GV]

This elog is meant to be a summary
of some of the many subtleties
 LatchLogic.pdf 
  14947   Tue Oct 8 03:19:14 2019 KojiUpdateCDSFinal incarnation of latch.pyNow with the CM board tested with the signal
injected, it turned out that the latch logic
was flipped. As the default state locked
  
  941   Thu Sep 11 11:29:14 2008 josephbConfigurationComputersFinal netgear switch in place in 1Y2I've placed the final (of 4) Netgear prosafe
24 port switch at the very top of 1Y2.  At
that location, there are no holes left to
  
  8961   Fri Aug 2 21:59:36 2013 CharlesUpdateISSFinalized ISS Schematic (hopefully) Attached is the finalized schematic. The
general circuit topology should remain the
same from this point forward, although individual
 ISS_v3.pdfISS_v3-Power_Reg.pdf 
  16988   Mon Jul 11 19:29:23 2022 PacoSummaryGeneralFinalizing recovery -- timing issues, cds, MC1[Yuta, Koji, Paco]

Restarting
CDS

We were having
  
  2983   Tue May 25 16:40:27 2010 josephb, alexUpdateCDSFinally tracked down why new models wouldn't talk to each otherThe problem with the new models using the
new shared memory/dolphin/RFM defined as
names in a single .ipc file.
  
  17006   Fri Jul 15 16:20:16 2022 Cici HannaUpdateGeneralFinding UGFI have temporarily abandoned vectfit and
aaa since I've been pretty unsuccessful
with them and I don't need poles/zeroes
 UGF_4042.pngUGF_5650.pngTFSR785_29-06-2022_114042.txtTFSR785_29-06-2022_115650.txt 
  16993   Tue Jul 12 18:35:31 2022 Cici HannaSummaryGeneralFinding Zeros/Poles With VectfitAm still working on using vectfit to find
my zeros/poles of a transfer function - now
have a more specific project in mind, which
  
  8322   Thu Mar 21 09:53:46 2013 AnnalisaUpdateLockingFinding the beat note Yesterday I tried to find the beat
note between the main PSL and the auxiliary
NPRO, but I didn't :( 
  
  8323   Thu Mar 21 10:19:28 2013 KojiUpdateLockingFinding the beat noteGive us more info on the elog:

What PD are you using? How much power
  
  8327   Thu Mar 21 13:11:42 2013 AnnalisaUpdateLockingFinding the beat note

    

       
            
 Beat_note_setup.jpg 
  541   Wed Jun 18 18:26:19 2008 YoichiUpdatePSLFinding the optimal operation temperature for the NPRO by the slow act scanBeing suspicious of the temperature stabilization
of the NPRO crystal, I ran the slow scan
script written by Rana to find the suitable
 FSS-slow-scan.pdf 
  7953   Tue Jan 29 14:20:02 2013 KojiUpdateGeneralFiner rotation stage for optics characterizationA rotation stage has been ordered.

  
  15618   Thu Oct 8 08:37:15 2020 gautamUpdateComputer Scripts / ProgramsFinesse GUIThis
looks cool, we should have something similar,
can be really useful.
  
  15621   Thu Oct 8 18:40:42 2020 KojiUpdateComputer Scripts / ProgramsFinesse GUIIs it better than Luxor? https://labcit.ligo.caltech.edu/~jharms/luxor.html   
  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 
  13915   Mon Jun 4 19:41:01 2018 keerthanaUpdate Finesse code for cavity scanThe cavity scan data obtained from the
Finesse simulation is attached here. Fig1
indicates the cavity scan data in the absence
 Fig1.pngFig2.png 
  13956   Wed Jun 13 18:08:36 2018 keerthanaUpdate Finesse code for cavity scanThe unit mentioned in the x-axis was wrong.
So I have remade the graphs. The point where
frequency equals to zero is actually the
 finesse1.pdffinesse2.pdf 
  12120   Wed May 18 01:10:22 2016 gautamUpdateCOCFinesse modellingI've been working on putting together
a Finesse model for the current 40m configuration.
The idea was to see if I could reproduce
 arms.pdfPRC.pdfSRC.pdfFinesse_model.zip 
  12130   Tue May 24 22:49:02 2016 gautamUpdateCOCFinesse modelling - mode overlap scansSummary:

Having played around with a toy finesse
model, I went about setting up a model in
 9x 
  12131   Tue May 24 23:17:37 2016 ericqUpdateCOCFinesse modelling - mode overlap scansI think you should use the current actual
PRC & SRC cavity lengths as measured,
as it would be simplest to simply replace
  
  2903   Mon May 10 17:47:16 2010 josephbSummaryCDSFinishedSo I finished writing a script which takes
an .ipc file (the one which defines channel
names and numbers for use with the RCG code
  
  2908   Mon May 10 20:33:29 2010 KojiSummaryCDSFinishedThis IPC stuff looks really a nice improvement
of CDS.
Please just maintain the wiki updated
  
  16499   Fri Dec 10 15:59:23 2021 PacoUpdateBHDFinished Coil driver (even serial number) units tests[Paco, Anchal]

We have completed modifications
and testing of the HAM Coil driver D1100687
 dc_fail.jpg 
  16514   Thu Dec 16 15:32:59 2021 AnchalUpdateBHDFinished Coil driver (odd serial number) units testsWe have completed modifications and testing
of the HAM Coil driver D1100687 units with
serial numbers listed below. The DCC
  
  16517   Thu Dec 16 17:57:17 2021 AnchalUpdateBHDFinished Coil driver (odd serial number) units testsS2100619 was fixed
by Koji and it passed the test after
that.
  
  12329   Mon Jul 25 10:54:55 2016 PrafulUpdateComputer Scripts / ProgramsFinished MEDM Tab on Summary PagesThe MEDM screen capture tab is now working
and up on the summary pages: https://nodus.ligo.caltech.edu:30889/detcharsummary/day/20160725/medm/

Please let me know if you have
  
  12330   Mon Jul 25 12:22:18 2016 ranaUpdateComputer Scripts / ProgramsFinished MEDM Tab on Summary PagesLooks pretty great. However, there's
two problems:

1) Some of the MEDM screens don't
  
  12439   Wed Aug 24 23:47:30 2016 PrafulUpdateElectronicsFinished Prototype BoxGautam helped me drill holes in a metal
box and I set up my circuit inside. Everything
seems to be working so far. Tomorrow I'll
 out1.pdfout2.pdfout3.pdfin1.pdfin2.pdf 
  3116   Thu Jun 24 16:59:24 2010 josephbUpdateVACFinished restoring the access connector and door[Jenne,  Kiwamu, Steve, Sharmila,
Katherine, Joe]
We finished bolting the door on the
  
  2597   Fri Feb 12 13:56:16 2010 josephbUpdateComputersFinishing touches on IP switch overThe GPIB interfaces have been updated to
the new 192.168.113.xxx addresses, with Alberto's
help.
  
  4056   Wed Dec 15 12:46:18 2010 KojiSummaryIOOFinishing up the vac workWhat else?
v: Edit on Dec 15 10PM
  
  15490   Thu Jul 16 14:41:22 2020 gautamUpdateGeneralFire extinguisher inspectionThe (masked) tech accessed all areas in
the lab (office area, control room, VEA)
between ~230pm-3pm. The laser safety goggles
  
  15530   Mon Aug 17 21:24:43 2020 gautamUpdateGeneralFire extinguisher inspectionA technician came to the lab today at ~4pm.
He entered the VEA (with booties and googles),
and also the clean and bake lab. The whole
  
  1940   Tue Aug 25 02:37:53 2009 ranaConfigurationComputer Scripts / ProgramsFirefox 3.5 installed for 64 bit linux in apps/   DSC_0620.JPG 
  5863   Thu Nov 10 16:26:46 2011 MirkoUpdateComputersFirefox kills elogHad to restart the elog many times. For
some reason firefox 8 on Win 7 kills the
elog pretty consistently when trying to make
  
  14010   Sat Jun 23 13:08:41 2018 JonUpdateAUXFirst Coherent AUX Scan of PRC Using AM Sidebands[Jon, Keerthana, Sandrine]

Thu.-Fri. we continued with PRC
scans using the AUX laser, but now the "scanned"
 IMG_2695.jpegIMG_2698.jpegIMG_2699.jpeg 
  14011   Sat Jun 23 20:54:35 2018 KojiUpdateAUXFirst Coherent AUX Scan of PRC Using AM SidebandsHow much was the osc freq of the marconi?
And then how much was the resulting freq
offset between PSL and AUX?
  
  14017   Tue Jun 26 10:06:39 2018 keerthanaUpdateAUXFirst Coherent AUX Scan of PRC Using AM Sidebands(Jon, Keerthana, Sandrine)

I am attaching the plots of the
Reflected and transmitted AUX beam. In the
 TRANS.pdfREFL.pdf 
  7860   Wed Dec 19 21:35:33 2012 KojiSummaryGeneralFirst Contact Training with Margot[Koji, Steve]
First
Contact Training with Margot
  
  12223   Tue Jun 28 20:43:23 2016 KojiSummaryCOCFirst Contact cleaning practiceMade a dry run of the in-situ cleaning
for a 3inch optic.

Attachment 1: The Al dummy mass
 7x 
  7388   Fri Sep 14 16:39:14 2012 ericq, jenneUpdateGeneralFirst In Vac PictureAfter much fussing, we got a picture of
MMT1 with the beam.
Using the iris doesn't seem feasible.
 mmt1.jpg 
  7389   Fri Sep 14 18:15:43 2012 ranaUpdateASCFirst In Vac Picture 
 Looks good. Any way that you
can tell in an unambiguous way, where the
  
  2964   Fri May 21 00:51:06 2010 JenneUpdateIOOFirst MC mode measuring (hopefully) done[Jenne, Kiwamu, Steve]
Round 1 of measuring the MC mode
is pretty much done.  Yay.
  
  5727   Fri Oct 21 18:20:54 2011 MirkoUpdateCDSFirst OAF version running[Jenne, Jamie, Mirko]
We got the first version of the oaf
code based on Matt"s code running!!
  
  16007   Thu Apr 8 17:04:43 2021 Anchal, PacoUpdateSUSFirst Successful Coil BalancingToday, we finally crossed the last hurdle
and got a successful converging coil balancing
run. 
 SDistanceFromIdentity.pdfSmatIterations.pdfSmatrixPlots.pdf 
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