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ID Date Author Type Category Subjectup Text Attachments
  15011   Mon Nov 4 19:02:25 2019 YehonathanUpdatePSLMapping the PSL electronicsI created a spreadsheet (Attached) by taking Koji's
c1psl sheet from slow_channel_list and filtering
out the channels that do not need an Acromag.
 PSL_Wirings_-_Sheet1_(1).pdf 
  15099   Tue Dec 17 00:23:28 2019 YehonathanUpdatePSLMapping the PSL electronicsI added to the PSL wiring list the
ioo channels and the laser shutter (See attached
pdf for an updated list).
 PSL_Wirings_-_Sheet1_(2).pdf 
  15100   Tue Dec 17 18:05:06 2019 YehonathanUpdatePSLMapping the PSL electronicsUpdated the channel list (Attached):

1. Removed the MC steering mirror
PZT channels
 PSL_Wirings_-_Sheet1_(3).pdf 
  15103   Fri Dec 20 18:33:21 2019 YehonathanUpdatePSLMapping the PSL electronicsFinal (hopefully) PSL channel list is attached
with allocated Acromag channels. Wiring spreadsheet
coming soon.
 PSL_Wirings_-_Channel_List.pdf 
  15104   Mon Dec 23 19:30:20 2019 YehonathanUpdatePSLMapping the PSL electronicsPSL wiring spreadsheet is ready. (But the
link was stripped. Koji)

Link
  
  15108   Wed Jan 1 04:53:11 2020 gautamUpdatePSLMapping the PSL electronicsFor the IMC servo board, it'd be easiest
to copy the wiring scheme for the BIO bits
as is configured for the CM board (i.e. copy
  
  15110   Wed Jan 1 16:04:37 2020 YehonathanUpdatePSLMapping the PSL electronicsDone.




  
  3126   Mon Jun 28 11:27:08 2010 MeganUpdateElectronicsMarconi Phase NoiseUsing the three Marconis in 40m at 11.1
MHz, the Three Cornered Hat technique was
used to find the individual noise of each
 IndividualNoise11100kHzAllRanges.jpgIndividualNoise11100kHzSeparate.jpgDirectvsIndirectNoise.jpgFG12Noise.jpg 
  2869   Mon May 3 01:16:50 2010 ranaHowToElectronicsMarconi phase noise measurement setup To try the 3-corner hat method
on the Marconis, I started to set up the
 pn.png 
  2879   Tue May 4 18:40:27 2010 ranaHowToElectronicsMarconi phase noise measurement setupTo check the UGF, I increased the gain
of the PLL by 10 and looked at how much the
error point got suppressed. The green trace
 Untitled.pngifrnoise.png 
  2913   Tue May 11 18:58:49 2010 ranaHowToElectronicsMarconi phase noise measurement setupJust a little while ago, at 2330 UTC on
5/11, I swapped the phase noise setup to
use another Marconi - this time its the 3rd
 Untitled.png 
  2914   Wed May 12 02:21:56 2010 ranaHowToElectronicsMarconi phase noise measurement setupFinally got the 3-cornered-hat measurement
of the IFRs done. The result is attached.
 pn.png 
  2570   Thu Feb 4 12:29:04 2010 josephbUpdateComputersMartian IP switch over notesWhat is the change:
We will be
moving the 131.215.113.XXX ip addresses of
the martian network over to a 192.168.XXX.YYY
  
  4603   Tue May 3 00:44:02 2011 KojiConfigurationComputersMartian WIreless BridgeThe Martian wireless bridge has the ethernet
cable inserted in the wrong connector.
It should be inserted to one of the
  
  4135   Tue Jan 11 14:05:11 2011 josephbUpdateComputersMartian host table updated dailyI created two simple cron jobs, one running
on linux1 and one running on nodus, to produce
an updated copy of the martian host table
  
  14465   Tue Feb 19 19:03:18 2019 ranaUpdateComputersMartian router -> WPA2I have swapped our martian router's
WiFi security over to WPA2 (AES) from the
previous, less-secure, system. Creds are
  
  10196   Mon Jul 14 16:51:07 2014 NichinUpdateElectronicsMartian table updated, Named server restarted [Nichin, Jenne]
The martian lookup tables are located
at 
  
  1339   Thu Feb 26 01:24:44 2009 YoichiUpdateComputersMartian wireless is backToday, a new wireless router arrived.
I configured and installed it. Now the martian
wireless network is back.
  
  1325   Thu Feb 19 16:29:43 2009 YoichiUpdateComputersMartian wireless router badThe Martian wireless router is dead.
I rebooted it several times, but it hangs
up in a minute.
  
  9026   Mon Aug 19 09:54:13 2013 SteveUpdatesafetyMasayuki receives safety trainingMasayuki Nakano, a student of Seiji's from
ICRR / U Tokyo, is visiting us here at the
40m lab for the next couple months.
  
  16135   Wed May 12 14:23:20 2021 JordanUpdateSUSMass Properties of SOS Assembly with 3"->2" Optic sleeve, in SI units   Moments_of_Inertia_SI.PNG 
  16136   Wed May 12 16:53:59 2021 KojiUpdateSUSMass Properties of SOS Assembly with 3"->2" Optic sleeve, in SI unitsNo, this is the property of the suspension
assembly. The mass says 10kg

Could you do the same for the testmass
  
  16137   Wed May 12 17:06:52 2021 JordanUpdateSUSMass Properties of SOS Assembly with 3"->2" Optic sleeve, in SI unitsHere are the mass properties for the only
the test mass assembly (optic, 3" ring,
and wire block). (Updated with g*mm^2)
 Moments_of_Inertia_SI.PNG 
  16146   Wed May 19 18:29:41 2021 KojiUpdateSUSMass Properties of SOS Assembly with 3"->2" Optic sleeve, in SI unitsCalculation for the SOS POS/PIT/YAW resonant
frequencies

- Nominal height gap between the
 SOS_resonant_freq.pdfSOS_resonant_freq.nb.zip 
  3740   Tue Oct 19 00:24:07 2010 DmassOmnistructureElectronicsMassive restocking of the 40mI had a number of delinquent items on the
sign out list from the 40m. I returned about
half, and ordered replacements for most of
  
  120   Tue Nov 20 18:35:20 2007 JohnHowToComputersMatLab in EmacsIf you can't get MatLab to run in emacs try
adding the following to the .emacs file
  
  251   Mon Jan 21 23:30:03 2008 AndreyUpdateComputer Scripts / ProgramsMatlab Program for Q-factor measurements (XARM -> ITMX and ETMX)
Finally I overcame difficulties with adapting
Sonia's Matlab programs for XARM (Sonia's
 Example-ITMX_POS_40.png 
  12859   Wed Mar 1 16:00:41 2017 gautamUpdateComputer Scripts / ProgramsMatlab R2016b installedSince it would be nice to have the latest
version of Matlab, with all its swanky new
features (?), available on the control room
  
  6083   Wed Dec 7 20:55:44 2011 Vladimir, DenUpdatedigital noiseMatlab error

    

       
            
 gain_cmp.png 
  281   Mon Jan 28 17:16:54 2008 AndreyConfigurationComputersMatlab libraries DO NOT WORK properly sometimes
Working in Matlab, I encountered at two different
times today the license distribution problem:
  
  10751   Wed Dec 3 21:41:12 2014 JenneUpdateComputer Scripts / ProgramsMatlab license updatedIt seems that the old Matlab servers went
down a week or so early, so I have updated
the Matlab license information in 
  
  777   Thu Jul 31 16:11:22 2008 josephbConfigurationComputersMatlab on MegatronMatlab now works on megatron.

I did a few things:
  
  8774   Thu Jun 27 21:59:42 2013 ranaUpdateComputer Scripts / ProgramsMatlab upgradedI moved the old matlab directory from /cvs/cds/caltech/apps/linux64/matlab_o   
  15988   Thu Apr 1 21:13:54 2021 AnchalUpdateSUSMatrix results, new measurement set to trigger
New
Input matrix used for MC2 (C1:SUS-MC2_INMATRIX_ii_jj


  
  15993   Fri Apr 2 15:22:54 2021 gautamUpdateSUSMatrix results, new measurement set to triggerHow should I try to understand why PIT
and YAW are so different? 

  
  439   Tue Apr 22 22:51:30 2008 ranaConfigurationIOOMcWFS StatusI've been working a little on the MC WFS in
the last few days. I have made many 
changes to the sensing matrix script and
  
  1503   Mon Apr 20 20:00:44 2009 ranaConfigurationIOOMcWFS gains re-allocatedSince it looks like the night time people
have been running with a WFS gain of 0.05
and I like the slider
  
  545   Thu Jun 19 15:52:06 2008 AlbertoConfigurationComputersMeasure of the current absorbed by the new Megatron ComputerTogether with Rich Abbot, sam Abbot and I
measured the current absorbed by the new
Megatron computer that we installed yesterday
  
  13080   Mon Jun 26 09:39:15 2017 NaomiSummaryGeneralMeasure transfer functions of Mini-Circuits filtersI have spent my first few days as a SURF
getting experience working with the Network/Spectrum
Analyzer (AG 4395A). After an introduction
 Bode_Plot.png 
  1662   Tue Jun 9 11:29:07 2009 JenneUpdateoplevsMeasured ETMY oplev beam size...put everything backI measured the ETMY oplev beam size at
a couple different distances away from the
HeNe by taking out the steering mirror and
  
  2317   Mon Nov 23 21:30:29 2009 JenneUpdateLSCMeasured MC lengthWith Koji's help, I measured the length
of the Mode Cleaner.
The new modulation frequencies (as
  
  2319   Tue Nov 24 08:00:16 2009 ranaUpdateLSCMeasured MC lengthI propose that from now on, we indicate
in the elog what frequencies we're referring
to. In this case, I guess its the front panel
  
  2320   Tue Nov 24 10:36:21 2009 KojiUpdateLSCMeasured MC lengthWhat I meant was the VCO driver, not the
FSS box.
As for the frequency, all written
  
  2325   Wed Nov 25 03:05:15 2009 robUpdateLockingMeasured MC length

    
        
  
  2333   Wed Nov 25 15:38:08 2009 robUpdateLockingMeasured MC length

    
        
  
  2332   Wed Nov 25 14:29:08 2009 robUpdateLockingMeasured MC length--FSS trend

    
        
 FSStrendpowerjump.png 
  2335   Wed Nov 25 16:13:27 2009 ranaUpdatePSLMeasured MC length--FSS trendbut the increase in both the RCtrans and
the RCrefl is consistent with my theory that
the power going to the RC has increased ;
  
  2336   Wed Nov 25 16:44:52 2009 KojiUpdatePSLMeasured MC length--FSS trendI checked C1:PSL-FSS_VCODETPWR. The attached
is the 4 months trend of the FSS RCTRANS
/ RFPDDC(=FSS REFL) / VCODETPWR / VCOMODLEVEL.
 091125_FSS.png 
  10967   Tue Feb 3 04:07:49 2015 JenneUpdateModern ControlMeasured PRM -> POP QPD TFsToday (after centering the POP QPD), I
measured the PRM to POP QPD transfer functions. 
I am suspicious that this was part of my
 PIT_measured_TF.pngYAW_measured_TF.png 
  9661   Mon Feb 24 13:21:00 2014 JenneUpdateElectronicsMeasured REFL165 demod board I measured the REFL 165 demod board's
I/Q separation.  
Our 11MHz signal is currently 11.066092
  
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