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ID Date Author Type Category Subjectdown Text Attachments
  16887   Fri Jun 3 12:13:58 2022 PacoConfigurationCDSFix RFM channels [Paco, Yuta]

We tried fixing the issue of LSC_TRY
and LSC_TRX channels not working. We first
 SoGreen.png 
  16274   Tue Aug 10 17:24:26 2021 pacoUpdateGeneralFive day trendAttachment 1 shows a five and a half day
minute-trend of the three temperature sensors.
Logging started last Thursday ~ 2 pm when
 six_day_minute_trend.png 
  14439   Thu Feb 7 17:27:53 2019 KojiSummaryTip-TIltFive FiveNine Optics Optics delivered5 PR3/SR3 optics from FiveNine Optics were
delivered. The data sheets were scanned and
uploaded to the following wiki page. https://wiki-40m.ligo.caltech.edu/Aux_Optics
  
  14442   Fri Feb 8 00:20:56 2019 gautamSummaryTip-TIltFive FiveNine Optics Optics deliveredThey have been stored on the 3rd shelf
from top in the clean optics cabinet at the
south end. EX
  
  16467   Tue Nov 16 11:37:26 2021 HangHowToSUSFitting suspension model--large systematic errorsOne goal of our sysID study is to improve
the aLIGO L2A feedforward. Our algorithm
currently improves only the statistical uncertainty
 L2L_L3P_fit.pdfL2L_L3P_residual.pdf 
  512   Tue Jun 3 02:15:29 2008 AndreySummaryCamerasFitting results
There have been a lot of work going on related
to the processing of images captured by the
 May30-GC650.pdfMay30-GC750.pdfJune02-GC650.pdfJune02-GC750.pdf 
  5015   Thu Jul 21 23:36:51 2011 JennyUpdate Fitting beam waist with MATLABI am starting work on the PSL table at
the 40m. My goal is to lock  the laser coming
from the nearby table to the FP cavity and
 twobeamfit2.jpg 
  16486   Mon Nov 29 15:24:53 2021 HangHowToGeneralFisher matrix vs length of each FFT segmentWe have been discussing how does the parameter
estimation depends on the length per FFT
segment. In other words, after we collected
 setup.pdfFisher_vs_Tperseg.pdffisher_vs_mcmc_offset_removed.pngfisher_vs_mcmc.png 
  16373   Mon Oct 4 15:50:31 2021 HangUpdateCalibrationFisher matrix estimation on XARM parameters[Anchal, Hang]

What: Anchal and I measured the
XARM OLTF last Thursday.
 tf_meas.pdffisher_est_vs_data.pdfPxx_evol.pdffisher_evol.pdf 
  6882   Wed Jun 27 14:18:30 2012 Yaakov SummarySTACISFirst week summaryThe beginning of my first week was spent
at various orientations and safety meetings,
some for general SURF and some more specific
  
  10959   Fri Jan 30 02:57:03 2015 JenneUpdateModern ControlFirst try with PRCL ASC Wiener filtering[Aside - How do you rotate plots in the
new elog?  It's showing them correctly
in the attachments list below the entry,
 9x 
  15926   Tue Mar 16 19:13:09 2021 Paco, AnchalUpdateSUSFirst success in Input Matric DiagonalizationAfter jumping through few hoops, we have
one successful result in diagonalizing the
input matrix for MC1, MC2 and MC3.
 IMC_InputMatrixDiagonalization.pdfInMatCalcScripts.zip 
  2941   Mon May 17 19:42:11 2010 JenneUpdateIOOFirst steps toward MC mode measuring[Jenne, Kevin, Steve]
We made some progress toward getting
the MC's beam profile measured.  In
  
  2942   Tue May 18 01:40:56 2010 KojiUpdateIOOFirst steps toward MC mode measuringOK. Don't worry. This is just an initial
confusion which we also had for the suspensions
a while ago.
  
  2945   Tue May 18 12:04:13 2010 robUpdateIOOFirst steps toward MC mode measuring


   
        
            
  
  2949   Tue May 18 16:44:35 2010 KojiUpdateIOOFirst steps toward MC mode measuringHere is the upadted list http://lhocds.ligo-wa.caltech.edu:8000/40m/Upgrade_09/Optics

  
  5157   Tue Aug 9 16:21:59 2011 Manuel, IshwitaUpdateWienerFilteringFirst results of our simulationsWe did the simulation of the stacks by
defining a transfer function for one stack
 (green
 simu1.pngsimu2w.pngTFwhitened2.png 
  3593   Tue Sep 21 16:05:21 2010 josephbUpdateCDSFirst pass at rack diagramI've made a first pass at a rack diagram
for the 1X1 and 1X2 racks, attached as png.
Gray is old existing boards, power
 1X1_1X2_racks.png 
  11979   Fri Feb 5 16:50:24 2016 gautamUpdateGreen LockingFirst pass at mode-matchingI've done a first pass at trying to
arrive at a mode-matching solution for the
X-end table once we swtich the lasers out.
 Modematch_AUXx.pdfNewSetUp.pngModematch_AUXx_2.pdfXendModeMatch.m.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 
  1714   Thu Jul 2 06:31:35 2009 ClaraUpdatePEMFirst mic in place and connectedI clamped Bonnie (microphone) to the top
of a chamber near the vertex of the arms
and placed Clyde (pre-amp) on the table right
 bonnieandclyde.JPG 
  13674   Thu Mar 8 23:50:27 2018 gautamUpdateALSFirst look at new ALS electronics
Locked single arms, dither aligned,
and saved offsets to EPICS (slow) sliders
in anticipation of having to reboot all vertex
 BeatMouth_OOL.pdf 
  13675   Fri Mar 9 01:07:01 2018 gautamUpdateALSFirst look at new ALS electronics[koji,
gautam]
 ALS_vs_POXnoise.pdf 
  13274   Wed Aug 30 11:04:08 2017 GabrieleSummaryLSCFirst look at neural network reconstruction of PRMI motionIntroduction

I trained a deep
neural network (DNN) to reconstruct MICH
and PRCL degrees of freedom in the PRMI configuration.
 IMG_5882.pnggru_2017_08_13a_100x4_4000_300_20_free_swinging_time_domain.png.pnggru_2017_08_13a_100x4_4000_300_20_free_swinging_free_swinging_histograms2d.png.pngsimulation_histograms2d.png.png 
  15534   Thu Aug 20 00:21:51 2020 gautamUpdateElectronicsFirst look at HV coil driverSummary:

A single channel of this
board was stuffed (and other channels
 IMG_8724.JPGtimeDomain.pdfHVampNoise.pdf 
  15536   Sun Aug 23 23:36:58 2020 gautamUpdateElectronicsFirst look at HV coil driverSummary:

A more careful analysis has revealed
some stability problems. 
 IMG_5379.JPGstabilityCriterion.pdf 
  13932   Fri Jun 8 01:08:22 2018 johannesUpdatePSLFirst light of AUX at YENDAmong the things that we hadn't taken
care of yesterday before beginning to look
for transmission signals were the polarization
 AG4395A_07-06-2018_205019.pdfPSL_AUX_SETUP.pdfAS_AUX_SETUP.pdf 
  43   Thu Nov 1 01:28:04 2007 waldmanOtherOMCFirst digital lock of OMC[Pinkesh, Sam]

We locked a fiber based NPRO to the suspended
 071101_PZT_firstLoopSweep.pdf071101_PZT_firstLoopSweep.gif071101_OMC_FirstLock_spectra.pdf071101_OMC_FirstLock_spectra.gif 
  14613   Thu May 16 13:07:14 2019 gautamUpdateSUSFirst contact residue removalI  used a pair of tweezers to remove
the stray fiber of first contact. As Koji
predicted, this was rather dry and so it
 etmy_sensors.pdfetmy_BRmode.pdf 
  12065   Wed Apr 6 17:52:21 2016 gautamUpdateendtable upgradeFirst contact cleaning commencedI've begun cleaning the optics that
will eventually go back onto the newly installed
X-endtable. We decided that First Contact
  
  13250   Thu Aug 24 18:02:16 2017 GabrieleSummaryLSCFirst cavity length reconstruction with a neural network1) Introduction

In brief, I
trained a deep neural network (DNN) to recosntuct
the cavity length, using as input only the
 8x 
  13251   Thu Aug 24 18:51:57 2017 KojiSummaryLSCFirst cavity length reconstruction with a neural networkPhenomenal!
  
  13256   Sat Aug 26 09:56:34 2017 GabrieleSummaryLSCFirst cavity length reconstruction with a neural networkUpdate

I included the 55 MHz
sideband and higher order modes in my
training examples. To keep things simple,
 gru_fp_2017_08_25a_50x2_3000_300_20_histogram_1d.png.pnggru_fp_2017_08_25a_50x2_3000_300_20_histogram_2d.png.pngFP_net_reconstruction_1dhistogram.pngFP_net_reconstruction_2dhistogram.png 
  13258   Mon Aug 28 08:47:32 2017 JamieSummaryLSCFirst cavity length reconstruction with a neural network


  
  16892   Mon Jun 6 13:35:11 2022 PacoUpdateLSCFirst calibrated spectra of MICH at AS55 Q[Paco, Yuta]

On the topic of high AS55_Q RFPD
offset, it seems it stems from a small residual
 Screenshot_2022-06-06_17-30-16_MICHOLTF.pngCalibrated_MICH_ERR.pdf 
  5639   Sun Oct 9 17:13:46 2011 kiwamuUpdateLSCFirst attempt to estimate mode matching efficiency using interferometerThe efficiency
of the mode matching (MM) to PRC (Power-Recycling
 mm_reflection.png 
  5640   Mon Oct 10 00:01:26 2011 KojiUpdateLSCFirst attempt to estimate mode matching efficiency using interferometer"^2"s are missing in the second
equation, but the calculation results seem
correct.
  
  3099   Tue Jun 22 20:07:08 2010 JenneUpdate40m UpgradingFirst attempt at Tip Tilt hanging[Jenne, Steve, Nancy, Gopal]
We
made an attempt at hanging some of the Tip
 2_ECDs_small.jpgMagnetStickingOutFar_small.jpg 
  6878   Wed Jun 27 11:27:49 2012 LizUpdate First Week Update!This week, the
other SURF students and I got          
  
  565   Wed Jun 25 11:36:14 2008 Max JonesUpdateComputer Scripts / ProgramsFirst Week UpdateFor the first week I have been modifying the
noise budget script in caltech/NB to run
with 40 m parameters and data. As per Rana's
 C1_NoiseBudgetPlot_Day.epsC1_NoiseBudgetPlot_Night.eps 
  6879   Wed Jun 27 11:33:28 2012 MashaUpdateGeneralFirst Week UpdateThis week I wrote Matlab code, most of
which can be found in /users/masha
First, I wrote a simulation seismicFilter.m
  
  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 
  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!!
  
  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.
  
  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
  
  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 
  7860   Wed Dec 19 21:35:33 2012 KojiSummaryGeneralFirst Contact Training with Margot[Koji, Steve]
First
Contact Training with Margot
  
  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?
  
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