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  40m Log, Page 156 of 344  Not logged in ELOG logo
ID Date Author Type Category Subjectup Text Attachments
  4743   Wed May 18 22:11:31 2011 ranaConfigurationLSCNew digital lockin added to LSC model/screen   Untitled.png 
  4766   Wed May 25 20:12:55 2011 JamieConfigurationLSCNew digital lockin added to LSC model/screen


   
        
            
 lsc-lockin-adl.png 
  4767   Thu May 26 17:10:21 2011 JamieConfigurationLSCNew digital lockin added to LSC model/screen


   
        
            
  
  17305   Wed Nov 23 16:34:33 2022 KojiUpdateCDSNew donatella testingLet's use this entry to list of the
test results of new donatella.


Firefox
  
  16252   Wed Jul 21 14:50:23 2021 KojiUpdateSUSNew electronicsReceived:

Jun 29, 2021 BIO I/F 6 units
Jul 19, 2021 PZT Drivers x2 / QPD
 P_20210629_183950.jpegP_20210719_135938.jpeg 
  16281   Tue Aug 17 04:30:35 2021 KojiUpdateSUSNew electronicsReceived:

Aug 17, 2021 2x ISC Whitening

Delivered 2x Sat Amp board to Todd
 P_20210816_234136.jpgP_20210816_235106.jpgP_20210816_234220.jpg 
  16436   Wed Oct 27 19:34:52 2021 KojiSummaryElectronicsNew electronics racks1. The rack we cleaned today (came from
West Bridge) will be placed between 1X3 and
1X4, right next to 1X4 (after removing the
 P_20211027_180737.jpgP_20211027_180443.jpgP_20211027_180408.jpgP_20211027_180139.jpg 
  16149   Fri May 21 00:05:45 2021 KojiUpdateSUSNew electronics: Sat Amp / Coil Drivers11 new Satellite Amps were picked up from
Downs. 7 more are coming from there. I have
one spare unit I made. 1 sat amp has already
 F3CDEF8D-4B1E-42CF-8EFC-EA1278C128EB_1_105_c.jpeg 
  16212   Thu Jun 17 22:25:38 2021 KojiUpdateSUSNew electronics: Sat Amp / Coil DriversIt is a belated report: We received 5 more
sat amps on June 4th. (I said 7 more but
it was 6 more) So we still have one more
 P_20210604_231028.jpeg 
  5815   Fri Nov 4 21:15:38 2011 KatrinUpdateGreen LockingNew fiber coupler (YARM)63% coupling efficiency into the new fiber
collimator (Thorlabs XXXX) and the blue fiber.This
should be sufficient for a beat measurement
  
  15549   Sat Aug 29 22:46:29 2020 gautamUpdateBHDNew homodyne-phase control electronicsSummary:

The electronics chain used to drive
the three elements of the PI PZT on which
 zetaDrive.pdftrekTFs.pdf 
  11423   Fri Jul 17 02:46:07 2015 IgnacioUpdateGeneralNew huddle test data for Wilcoxon 731A resultsOn Thursday, new huddle test data for the
Wilcoxon 731A was aquired by Eric. 

The difference between this new
 6x 
  2886   Thu May 6 16:18:37 2010 AlbertoUpdate40m UpgradingNew improved design for the 11MHz photodiodeAfter munching analytical models, simulations,
measurements of photodiodes I think I got
a better grasp of what we want from them,
 pox11.pdf 
  2893   Thu May 6 19:57:26 2010 AlbertoUpdate40m UpgradingNew improved design for the 11MHz photodiode


   
        
            
 pox11.pdf 
  2894   Fri May 7 11:21:49 2010 kojiUpdate40m UpgradingNew improved design for the 11MHz photodiodeHow much is the width?

  
  2896   Fri May 7 18:18:02 2010 AlbertoUpdate40m UpgradingNew improved design for the 11MHz photodiode


   
        
            
  
  2897   Fri May 7 19:02:27 2010 ranaUpdate40m UpgradingNew improved design for the 11MHz photodiodeTo measure the width of a resonance, the
standard method is to state the center frequency
and the Q. Use the definition of Q from the
  
  8116   Wed Feb 20 18:35:42 2013 JenneUpdateAlignmentNew in-vac alignment procedureI have updated the vacuum checklist for
in vacuum alignment.  Please take a
look (https://wiki-40m.ligo.caltech.edu/vent/checklist)
  
  6969   Thu Jul 12 15:43:07 2012 YaakovUpdateSTACISNew input point, using accelerometers for feedback Here's a picture of where I am now
inputting signals into the STACIS with the
accelerometers (the orange and blue wires): 
 new_input.JPGcBoard_tFunction.png 
  10990   Mon Feb 9 17:23:17 2015 diegoUpdateComputer Scripts / ProgramsNew laptopsI forgot to elog about these ones, my bad...
The new/updated laptops are giada, viviana
and paola; paola is already in the lab, while
  
  15508   Thu Aug 6 22:57:20 2020 gautamUpdatesafetyNew live HV SuppliesBe aware that there is now a KEPCO HV supply
that is energized, sitting on the floor immediately
adjacent to the OMC rack, east of the AP
  
  9250   Thu Oct 17 13:40:55 2013 JenneUpdateLSCNew lockin / sensing matrix frequenciesI locked PRMI, and (after fixing the POP
QPD situation, noted in elog
9249) took power spectra of all the REFL
 All_REFL_PRMI_17Oct2013.pdf 
  9245   Wed Oct 16 03:04:37 2013 JenneUpdateLSCNew lockin / sensing matrix model parts

    

       
            
  
  9270   Wed Oct 23 19:28:22 2013 JenneUpdateLSCNew lockin / sensing matrix model partsI have modified the Sensing Matrix I,Q
to Mag, Phase library part in the new sensing
matrix system.
  
  9227   Wed Oct 9 22:05:55 2013 JenneUpdateLSCNew lockin / sensing matrix screensAfter finishing up working on the models
for today, I made corresponding screens.
 
  
  9234   Fri Oct 11 17:37:08 2013 JenneUpdateLSCNew lockin / sensing matrix screens

    

       
            
  
  9236   Sun Oct 13 13:29:09 2013 ranaUpdateLSCNew lockin / sensing matrix screens  I think that we always drive
above the UGF for sensing matrix measurements
since we like to put notches in the servo.
  
  9237   Mon Oct 14 17:40:15 2013 JenneUpdateLSCNew lockin / sensing matrix screens Hmmmm, yup.  I forgot to pay
attention to what the UGFs of our LSC loops
are when I was picking a low-noise region. 
  
  9239   Mon Oct 14 21:12:35 2013 JenneUpdateLSCNew lockin / sensing matrix screensAfter staring and thinking, I remembered
that there is a limit to the number of characters
that a channel name can have.  So, I
  
  13789   Wed Apr 25 19:09:37 2018 gautamConfigurationALSNew look EX Fiber couplingSummary:

I implemented most of the things
outlined in my previous elog.
 EX_fiber_MM.pdfIMG_6977.JPGIMG_6972.JPGIMG_6974.JPGIMG_6976.JPG 
  13791   Thu Apr 26 11:24:50 2018 gautamConfigurationALSNew look EX Fiber coupling - pol stabilityHere is a first look at the overnight stability.
For the temperature, I used the calibration
I found in the old psl database file, seems
 polStab.pdf 
  13792   Thu Apr 26 18:58:21 2018 BruceConfigurationALSNew look EX Fiber coupling - pol stability    
  7824   Thu Dec 13 18:06:59 2012 AyakaUpdateWienerFilteringNew microphone mounts Yesterday, I made new mounts for
microphones.
 IMG_0129.JPGIMG_0130.JPG 
  6620   Tue May 8 03:33:24 2012 JenneUpdateSUSNew misalign / restore scripts for IFO_ALIGN screenSince Den wasn't able to fix c1sus (make
it talk to the framebuilder) before he left
a few hours ago, I decided to do some housekeeping
  
  8949   Thu Aug 1 12:12:35 2013 gautamUpdateCDSNew model for endtable PZTsI have
made a new model for the endtable PZT servo,
and have put it in c1iscex. Model name is
 C1ASX_GDS_TP.png 
  8951   Thu Aug 1 15:06:59 2013 jamieUpdateCDSNew model for endtable PZTs

    

       
            
  
  8956   Thu Aug 1 20:58:56 2013 gautamUpdateCDSNew model for endtable PZTs-MEDM Screens setup 
I
 MAIN_SCREEN.pdfMATRICES.pdfLOCKINS.pdfCONTROL_FILTERS.pdf 
  8952   Thu Aug 1 15:28:44 2013 gautamUpdateCDSNew model for endtable PZTs-problem solved

    

       
            
  
  8950   Thu Aug 1 13:09:17 2013 gautamUpdateCDSNew model for endtable PZTs-procedure 
 These
are roughly the steps I followed in setting
  
  8700   Thu Jun 13 15:04:16 2013 JenneUpdateLSCNew modeled sensing matrixUsing all of the latest parameters that
I can find, I have re-modeled the 40m sensing
matrix.  Also, I have it output the
 SensMatMeas_23May2013.pngSensMatModel_13June2013.png 
  8702   Thu Jun 13 16:13:08 2013 nicolasUpdateLSCNew modeled sensing matrixI'd repeat the measurement for REFL11.
The PRC arrow has some big error bar on it,
and maybe the true error is even bigger.
  
  8705   Fri Jun 14 00:32:43 2013 JenneUpdateLSCNew modeled sensing matrixI put in a new version of the modelled
plot.  I figured out a different way
to keep things generic so the same script
 SensMatModel_13June2013_currentPRMIfreq.pngSensMatModel_13June2013_idealPRMIfreq.png 
  8706   Fri Jun 14 02:38:07 2013 ranaUpdateLSCNew modeled sensing matrix This is nice - how about figuring
out how to plot the measurement and model
on the same plot? I guess we need to figure
  
  8737   Mon Jun 24 11:51:23 2013 JenneUpdateLSCNew modeled sensing matrix

    

       
            
 SensMatMeas_23May2013_21May2013_overlay.pngSensMatMeas_23May2013meas_13June2013model_overlay.pngSensMatMeas_23May2013_21May2013_NoRotation_overlay.png 
  5511   Thu Sep 22 01:05:28 2011 KatrinUpdateGreen LockingNew modulation frequency (Y arm)[Kiwamu / Katrin]
 
On Wednesday, the green light was
  
  3055   Tue Jun 8 15:58:25 2010 josephb, alexUpdateCDSNew multi-filter matrix part added to RCG (at the 40m at least)A new webview of the LSP model is available
at:
https://nodus.ligo.caltech.edu:30889/FE/lsp_slwebview_files/
 CDS_Library.png 
  9954   Wed May 14 17:36:32 2014 ericqUpdateCDSNew netgpib scripts for SR785 I have redone the SPSR785 (spectrum measurement)   
  10935   Fri Jan 23 14:25:03 2015 evanUpdateCDSNew netgpib scripts for SR785Does netgpibdata/TFSR785
work at the 40m currently? I rsynced the
netgpibdata
 TFSR785.zip 
  10936   Fri Jan 23 15:46:21 2015 ericqUpdateCDSNew netgpib scripts for SR785


  
  1267   Mon Feb 2 19:23:53 2009 YoichiUpdateGeneralNew optical layout planThe attached is a plan of the optical layout
in the central part for the upgrade.
I included, the folded recycling cavities,
 40mUpgradeOpticalLayoutPlan01.pdf.zip 
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