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ID Date Author Type Category Subjectup Text Attachments
  8430   Tue Apr 9 08:37:54 2013 SteveUpdate40m UpgradingEndtable upgrade for auxiliary green laser : TRY temporarily in place

    

       
            
  
  8341   Mon Mar 25 18:42:38 2013 ManasaUpdate40m UpgradingEndtable upgrade for auxiliary green laser : Timeline Endtable upgrade - timeline and progress
chart. End table upgrade wiki page updated.
 
 Endtable_progress.pdf 
  8228   Tue Mar 5 00:24:52 2013 ManasaConfiguration40m UpgradingEndtable upgrade for auxiliary green laser : customized mount Drawing of customized mount for endtable
doubler crystal (PV40+PVP2+NP9071) modified
and updated on the endtable upgrade wiki
  
  8418   Fri Apr 5 01:28:56 2013 ManasaUpdate40m UpgradingEndtable upgrade for auxiliary green laser : populating the tableI started populating the end table; the
TRY path to start with. I found that I need
to redo the cables/electronics layout around
  
  8425   Tue Apr 9 00:15:18 2013 ManasaUpdate40m UpgradingEndtable upgrade for auxiliary green laser : populating the table[Den, Annalisa, Manasa]

The Alberto laser was moved from the
  
  8458   Wed Apr 17 02:20:13 2013 ManasaUpdate40m UpgradingEndtable upgrade for auxiliary green laser : progress 
Assembly progress: 
1. ETMY oplev setup has been put
 TRY_OPL.jpgGRY.jpg 
  8522   Thu May 2 01:19:41 2013 ManasaUpdate40m UpgradingEndtable upgrade for auxiliary green laser : progressI started to put together optics at the
endtable. I am attaching the  layout with
the green blocks showing the optics that
 ETMY_0502.png 
  8543   Tue May 7 19:06:45 2013 ManasaUpdate40m UpgradingEndtable upgrade for auxiliary green laser : progressI have updated the waists (W)  and beam
diameters (D) at 1064nm optics on the
endtable.
 ETMY_endtable_New.png 
  8556   Thu May 9 01:36:32 2013 ManasaUpdate40m UpgradingEndtable upgrade for auxiliary green laser : progressProgress with end table:
Parts in green show assembled optics
that will not require any changes. Parts
 0509.png 
  8560   Thu May 9 22:29:23 2013 ManasaUpdate40m UpgradingEndtable upgrade for auxiliary green laser : progress[Annalisa, Manasa]
More optics have been put on the
table. Direction of the rejected beam from
  
  8561   Fri May 10 20:05:21 2013 AnnalisaUpdate40m UpgradingEndtable upgrade for auxiliary green laser : progressI rotated some mounts along
the green beam path, and I started aligning
the beam again.
  
  8565   Mon May 13 21:35:55 2013 AnnalisaUpdate40m UpgradingEndtable upgrade for auxiliary green laser : progressYend
table - Current status
  
  8576   Tue May 14 21:03:15 2013 AnnalisaUpdate40m UpgradingEndtable upgrade for auxiliary green laser : progress 
GREEN 
The new lenses arrived, and I put
  
  8584   Wed May 15 21:27:39 2013 AnnalisaUpdate40m UpgradingEndtable upgrade for auxiliary green laser : progress 
GREEN
I still have problems in maximizing
  
  8486   Wed Apr 24 15:27:59 2013 ManasaUpdate40m UpgradingEndtable upgrade for auxiliary green laser : progress: New layoutLayout that will be improved upon over
the next few days.
Things that need to be updated:
 ETMY_endtable_New.png 
  7889   Thu Jan 10 12:41:06 2013 ManasaConfiguration40m UpgradingEndtable upgrade for auxiliary green laser : wiki page 
I have created a wiki page linked here with
  
  3762   Fri Oct 22 16:59:21 2010 JenneUpdateElectronicsEpic TakeoverAs the suspension work winds down (we'll
be completely done once the ETMs arrive,
are suspended, and then are placed in the
  
  3764   Fri Oct 22 18:22:27 2010 AlbertoUpdateElectronicsEpic Takeover


   
        
            
  
  15007   Mon Nov 4 11:41:28 2019 shrutiUpdateComputer Scripts / ProgramsEpics installed on donatellaI've installed pyepics on Donatella
running

sudo yum install pyepics
  
  12828   Tue Feb 14 10:43:06 2017 gautamBureaucracyEquipment loanEquipment to Cryo LabPZT   
  9660   Fri Feb 21 12:45:57 2014 ericqUpdateLSCEquivalent Displacement Noise from QPD Dark Noise in SQRTINVEQ UPDATE: Measured it wrong the first
time, fixed now.
I measured the spectra of the SQRTINV
 SQRTINVspectra.pdfSQRTINV_DarkNoise.pdf 
  9693   Wed Mar 5 18:04:36 2014 ericqUpdateLSCEquivalent Displacement Noise from QPD Dark Noise in SQRTINVAt today's meeting, it was suspected that
these noise levels were far too low. (ELOG
 calc1.jpgcalc2.jpgSQRTINVspectra.dat.zipdarkTransmonSpec.py 
  11525   Mon Aug 24 14:05:47 2015 ericqUpdateSUSEricG Investigating L2AThis afternoon, I showed Eric Gustafson
some of the basics of making swept sine measurements
with DTT. We turned off the f2a filters and
  
  15178   Thu Jan 30 17:31:28 2020 JonUpdatePSLErrant FSS_INOFFSET changeA script I was testing errantly set C1:PSL-FSS_INOFFSET
=> 10 V at about 5:30 pm. I manually reverted
the channel value to 0, but I don't know
  
  15179   Thu Jan 30 17:41:10 2020 gautamUpdatePSLErrant FSS_INOFFSET changeYou can trend the data for the past few
hours and see what the appropriate value.
I think
  
  1175   Thu Dec 4 16:29:20 2008 josephbConfigurationComputersError message on Frame Builder Raid ArrayThe Fibrenetix FX-606-U4 RAID connected to
the frame builder in 1Y7 is showing the following
error message: IDE Channel #4  Error Reading
  
  11119   Sun Mar 8 03:27:48 2015 JenneUpdateLSCError signal blending for CARM/DARM transitionsThis elog will be about work that happened
yesterday.  I will write a reply to
this with work from this evening's success.
  
  11120   Sun Mar 8 04:04:19 2015 JenneUpdateLSCError signal blending for CARM/DARM transitionsAs I (very excitedly) reported in elog
11116, I was able to follow the error
signal blending procedure from last night,
  
  11121   Sun Mar 8 13:51:41 2015 ranaUpdateLSCError signal blending for CARM/DARM transitionsAccording
to the official rules, we only need 8 seconds
  
  11122   Mon Mar 9 14:14:32 2015 JenneUpdateLSCError signal blending for CARM/DARM transitionsHere is a longer stretch of data, from
the first RF-only lock on Saturday night.
 Unfortunately daqd had died about 400
 First-ever_RFonly_lock_7March2015.pngSecond-ever_RFonly_lock_7March2015.png 
  8401   Wed Apr 3 14:46:17 2013 GabrieleSummaryLSCError signal simulation in PRMIHere is a summary of a simulation of the
error signal behavior in the PRMI configuration.
The main parameters are: 
 14x 
  8537   Tue May 7 16:21:01 2013 JenneSummaryLSCError signal simulation in PRMII asked Gabriele why it looked like for
the PRCL sweep REFL 55 I&Q were zero
at zero, but for the MICH sweep only REFL55
 8x 
  10887   Tue Jan 13 00:42:15 2015 JenneUpdateLSCError signals for MICH with variable finesse techniqueIn order to know where we should try to
make the transition from REFL##Q to ASDC
for MICH, I did a quick Optickle simulation
 ErrSigs_vsMICHoffset_PRMI.pngErrSigs_vsMICHoffset_PRFPMI_3nmCARMoffset.pngErrSigs_vsMICHoffset_PRFPMI_1nmCARMoffset.pngErrSigs_vsMICHoffset_PRFPMI_0nmCARMoffset.pngErrSigs_vsMICHoffset_PRFPMI_3nmCARMoffset_zoom.png 
  8250   Thu Mar 7 12:39:12 2013 JenneUpdateLockingErudite discussion on PRMI locking[Rana, Jenne, Yuta] (late last night)
After some trouble getting the PRMI
to lock with REFL55 I&Q last night, we
  
  8251   Thu Mar 7 16:55:28 2013 KojiUpdateLockingErudite discussion on PRMI lockingPRMI for the sidebands may have different
situation. Investigate our wiki to find our
the simulation result.
  
  13023   Wed May 31 14:23:42 2017 jigyasaUpdateComputer Scripts / ProgramsEstablishing the EPICs channels for the GigETo set up the EPICs channels for the GigE,
Gautam and I followed the steps in the elog
by him  8957
  
  9490   Wed Dec 18 17:28:50 2013 GabrieleSummaryLSCEstimate of the PRC length errorMeasurement 
Looking back at what I did in april
(see log
 data_fit2.pngdata_kick.pngpop110_vs_dL.pngpop110_vs_dL.png 
  9493   Thu Dec 19 12:51:57 2013 JenneSummaryLSCEstimate of the sign of the PRC length errorMy hunch is that the PRC is SHORT
by a few cm, not long. 
In my Optickle simulation, the sidebands
 DesignLength.pngPlus5cm.pngMinus5cm.png 
  9495   Thu Dec 19 18:33:25 2013 GabrieleSummaryLSCEstimate of the sign of the PRC length errorMaybe I'm getting confused,
but I still believe there is no way to decide
the direction from yesterday's measurement.
  
  10706   Wed Nov 12 22:22:11 2014 KojiSummaryIOOEstimation of the angular jitter imposed by the TTs[Koji, Rana, Jenne]
One coil of the TT produce 36nrad/rtHz
at DC.
 03.png 
  444   Thu Apr 24 22:06:47 2008 AndreySummaryComputersEthernet Cables and HubsToday in the morning (between 8.30AM and noon)
Joe and I were working on understanding which
ethernet cables connect "processors controlling
  
  7691   Thu Nov 8 22:04:43 2012 CharlesUpdateElectronicsEthernet Illuminator ControlConfigured ethernet controlled power strips
to have static IP addresses: 192.168.113.110,
192.168.113.111 and 192.168.113.112.
  
  7698   Mon Nov 12 23:38:50 2012 CharlesUpdateElectronicsEthernet Illuminator Control

    

       
            
  
  7701   Tue Nov 13 00:27:50 2012 JenneUpdateElectronicsEthernet Illuminator Control

    

       
            
  
  14414   Wed Jan 23 18:11:56 2019 gautamUpdateElectronicsEthernet Power Strip IP conflictFor the last week, I noticed that I was
unable to turn the EY chamber illuminator
on using the remote python scripts. This
  
  14418   Fri Jan 25 12:49:53 2019 gautamUpdateElectronicsEthernet Power Strip IP conflict resolvedTo avoid the annoying excercise of having
to manually toggle the illuminators, I solved
the IP conflict. Made a wiki
  
  3852   Wed Nov 3 09:32:00 2010 ranaSummaryCDSEurocard board swapping When swapping Eurocard boards, it
is safest to first turn down the power supplies
and then do the swapping. 
  
  4903   Tue Jun 28 22:07:46 2011 JamieHowToSAFETYEurocrate extender card fried (ie. Jamie did a very bad thing)IMPORTANT ELECTRONICS SAFETY
LESSON TO FOLLOW
Yesterday,
  
  8167   Tue Feb 26 09:55:46 2013 SteveUpdateSAFETYEvan receives safety trainingEvan got 40m specific safety training today.   
  6505   Sat Apr 7 01:45:02 2012 Mike J.UpdateComputersEven Better Hysteresis Model and Plots The new hysteresis model is slightly
based on the SHO equation, but with the force
being out of phase with the position by an
 hyst_v3.pnghyst_v_3.pnghyst_v_3-x(t).png 
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