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ID Dateup Author Type Category Subject Text Attachments
  8400   Wed Apr 3 14:45:34 2013 JamieUpdateComputersupdated EPICS database (channels selected for saving)

    

       
            
  
  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 
  8402   Wed Apr 3 15:00:24 2013 JamieSummaryElectronicsSorensen supplies in LSC rack (1Y2)I investigated the situation of the two
Sorensen supplies in the LSC rack (1Y2). 
They are there solely to supply power to
 20130403_141842.jpg 
  8403   Wed Apr 3 16:03:59 2013 ChloeUpdate QPD Voltage RegulatorsThe voltage regulator on the QPD breadboard
seems to be having problems... yesterday
Eric helped me debug my circuit and discovered
  
  8404   Wed Apr 3 17:40:18 2013 JamieConfigurationElectronicsputting together a 110 MHz LSC demod boardI started to look into putting together
a 110 MHz demod board to be used as POP110
(see #8399).
  
  8405   Wed Apr 3 18:22:00 2013 JenneUpdateElectronicsPOP110 re-implementedI have re-implemented POP110.  The
cable coming from the AS110 diode is disconnected,
labeled, and sitting in the cable tray next
  
  8406   Wed Apr 3 18:27:03 2013 KojiUpdate QPD Voltage RegulatorsBreadboards may not be suitable for a reliable
work. Why don't you switch to any protoboard
and real soldering?
  
  8407   Wed Apr 3 18:41:22 2013 JamieConfigurationElectronicsputting together a 110 MHz LSC demod boardThis SCPQ-150+,
which is surface mount, might also work in
place of the PSCQ-2-120, which is through-mount. 
  
  8408   Wed Apr 3 19:01:06 2013 AlbertUpdateoptical tablesOptical Table Toolboxes Update

    

       
            
  
  8409   Wed Apr 3 22:26:51 2013 ranaConfigurationElectronicsputting together a 110 MHz LSC demod board For the 110 MHz demod boards, we
would ideally have a plugin bandpass filter.
If you have some specs in mind, you can email
  
  8410   Wed Apr 3 23:22:20 2013 ranaUpdateoptical tablesOptical Table Toolboxes Update There are some tips for how to appy
nail polish on YouTube from MKNails and MissJenFABULOUS.
Their tips on how to prepare the site for
  
  8411   Thu Apr 4 10:12:55 2013 GabrieleSummaryLSCPOP22 and POP110I had a look at the POP110 signal, with
the PRMI flashing.
1) The LSCoffset script does not
 pop110_2.pdf 
  8412   Thu Apr 4 10:32:42 2013 GabrieleSummaryLSCREFL55 error signalsThe attached plot shows that also the behaviour
of the REFL11 and 55 signals is qualitatively
equal to the simulation outcome.
 prmi_refl_signals.pdf 
  8413   Thu Apr 4 10:46:54 2013 KojiSummaryLSCREFL55 error signalsBeautiful double peaks. I don't see the
triple zero-crossings. Is this because you
adjusted the phase correctly (as predicted)?
  
  8414   Thu Apr 4 13:39:12 2013 Max HortonUpdateSummary PagesGraph LimitsGraph Limits: The limits on graphs
have been problematic.  They often reflect
too large of a range of values, usually because
  
  8415   Thu Apr 4 14:37:15 2013 JamieConfigurationElectronicsputting together a 110 MHz LSC demod boardI'm having Steve order the following:
2x  SXBP-100+
2x  SCLF-135+
  
  8416   Thu Apr 4 17:23:05 2013 SteveUpdate40m Upgrading ETMY optical table & enclosure is ready for optics

    

       
            
  
  8417   Fri Apr 5 01:18:34 2013 ManasaUpdate40m UpgradingNot a fan of the new plastic box yet

    

       
            
  
  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
  
  8419   Sat Apr 6 09:21:36 2013 ranaUpdate40m UpgradingNot a fan of the new plastic box yet 
 1) We still need to drill and
install the thumbscrew latches
  
  8420   Sun Apr 7 20:49:19 2013 ZachUpdateGeneralRestarted elogwith the script, as it was down.   
  8421   Mon Apr 8 08:05:41 2013 SteveUpdatePSLPMC lockedThe PMC locked manually. MC  grabbed
lock instantaniously
  
  8422   Mon Apr 8 10:19:46 2013 JenneUpdatePSLLSC left enabled 
 Note: The TRY PD isn't installed
and normalized properly yet, so the IFO OVERVIEW
  
  8423   Mon Apr 8 16:37:26 2013 SteveUpdate40m UpgradingETMY enclosure wall transmission 
 Enclosure cover #1 transmission
measured  in 1064 nm,  156 mW, 
  
  8424   Mon Apr 8 22:43:44 2013 ranaUpdatePSLMC locking troubles: MC/FSS servo unstableThe MC seemed to be losing lock recently
quite a bit. I noticed that the PC Drive
RMS signal was red.
 Untitled.png 
  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
  
  8426   Tue Apr 9 00:32:39 2013 ranaConfigurationIOOTurn on MCL Listening to the free swinging Y-arm,
its clear that the fringe velocity is higher
with the MCL path off, than on. I checked
  
  8427   Tue Apr 9 00:32:57 2013 ManasaUpdate40m UpgradingEndtable upgrade for auxiliary green laser : TRY temporarily in placeThe TRY path on the end table is temporarily
in place to help IFO locking.
The Y arm transmission was steered
  
  8428   Tue Apr 9 01:46:40 2013 ZachUpdateGeneralRestarted elogAgain.


  
  8429   Tue Apr 9 07:48:10 2013 SteveUpdatePSLPMC locked

    

       
            
 pmc10d.png 
  8430   Tue Apr 9 08:37:54 2013 SteveUpdate40m UpgradingEndtable upgrade for auxiliary green laser : TRY temporarily in place

    

       
            
  
  8431   Tue Apr 9 14:55:13 2013 JamieUpdateCDSoverbooked test points cause of DAQ problemsFolks were complaining that they were getting
zeros whenever they tried to open fast channels
in DTT or Dataviewer.  It turned out
 lsc-gds.png 
  8432   Tue Apr 9 21:27:48 2013 JenneUpdate40m Upgrading TRY temporarily in place

    

       
            
  
  8433   Wed Apr 10 01:10:22 2013 JenneUpdateLockingConfigure screen and scripts updatedI have gone through the different individual
degrees of freedom on the IFO_CONFIGURE screen
(I haven't done anything to the full IFO
  
  8434   Wed Apr 10 03:59:41 2013 DenConfigurationIOOTurn on MCL

    

       
            
 MCL.pdf 
  8435   Wed Apr 10 07:37:33 2013 SteveUpdatePSLPMC locked

    

       
            
 pmc4d.png 
  8436   Wed Apr 10 14:25:04 2013 ManasaUpdate40m UpgradingEndtable upgrade for auxiliary green laser : LWE Alberto laser beam profileI measured the beam profile of the Alberto
laser (that will be the ETMY end laser) as
I found the data inconsistent with the measurements
 LWE_Alberto_BP.pngbeam_waist.zip 
  8437   Wed Apr 10 15:49:22 2013 AnnalisaConfigurationCOMSOL TipsYend table eigenfrequency simulation with COMSOL I made a Simulation with COMSOL for
the Yend table. Mainly, I tried to see how
the lower eigenmode changes with the number
 Pics_end_table.pdf 
  8438   Thu Apr 11 02:00:21 2013 JenneUpdateLockingTRY gone???TRY
signals are all gone!  Both
the PD and the camera show no signal. 
  
  8439   Thu Apr 11 02:49:18 2013 DenUpdateLockingPRCL on carrierJenne, Den
We suspect PRM shows significant
length to angle coupling due to large oplev
 pop_rin.pdfpower.png 
  8440   Thu Apr 11 03:23:12 2013 DenUpdateGeneralMCL thresholdMC down script is too slow to block MC_L
when the cavity goes out of lock. As a result
the loop strongly kicks MC2. We decided to
  
  8441   Thu Apr 11 03:25:29 2013 JenneHowToSUSIdea for how to properly balance SUS actuators We have calibrated the overall actuators of
each suspension independent of the optical
levers. So, we know how much we are 
  
  8442   Thu Apr 11 03:38:40 2013 DenUpdateLockingangular motionSpectra of BS, PRM, ITMX, ITMY are attached
with oplevs ON and OFF (in units of urad).
Loops reduce RMS from ~2urad to ~0.3urad
 oplevs.pdf 
  8443   Thu Apr 11 10:15:55 2013 SteveUpdateLockingPRM yaw oplev transferfunctionSee   Feb
2012 PRM yaw transferfunctions, also
check Valera's modified  side
  
  8444   Thu Apr 11 11:58:21 2013 JenneUpdateComputersLSC whitening c-code readyThe big
hold-up with getting the LSC whitening
triggering ready has been a problem with
  
  8445   Thu Apr 11 16:29:23 2013 AlbertUpdateoptical tablesOptical Table Toolboxes Update

    

       
            
 Diagram.png 
  8446   Fri Apr 12 02:56:34 2013 DenUpdateLockingprcl angular motionI compared PCRL and XARM angular motions
by misaligning the cavities and measuring
power RIN. Divergence angles for both cavities
 pointing.pngoplev_exc.pdf 
  8447   Fri Apr 12 09:20:32 2013 ranaUpdateLockingprcl angular motion How
is the cavity g-factor accounted for in this
  
  8448   Fri Apr 12 10:33:42 2013 CharlesSummaryISSDC-Coupled ISS Servo DesignGeneral ISS Design
Signals
through the ISS are directed as follows:
 Example_Switching_Filter_Transfer_Function_-_Switch_Closed.pngExample_Switching_Filter_Transfer_Function_-_Switch_Open.png 
  8449   Fri Apr 12 13:21:34 2013 DenUpdateLockingprcl angular motion

    

       
            
  
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