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ID Date Author Type Category Subjectup Text Attachments
  1061   Thu Oct 11 19:07:06 2012 taraNotesRefCavcomsol simulation for cavity suspensionI ran a few more simulations to see how
support area would affect the displacement.
It turned out that it was not significant,
  1062   Sat Oct 13 23:38:08 2012 taraNotesRefCavcomsol simulation for cavity suspension After checking displacement and tilt
of the mirrors from various support points,
the tentative support positions will be 1.2" 
  1063   Tue Oct 16 01:14:00 2012 taraNotesRefCavcomsol simulation for cavity suspensionI checked the cavity length sensitivity
to horizontal acceleration ( normal to the
beam line axis). Unlike the result from vertical
  1065   Wed Oct 24 11:16:52 2012 taraNotesRefCavcomsol simulation for cavity suspensionAs Rana and Jan suggested, I thought about
the effect of mirror's radius of curvature
and DC tilt effect to cavity length noise.
  1067   Fri Oct 26 04:05:18 2012 taraNotesRefCavcomsol simulation for cavity suspensionI looked into the model a bit more to make
sure that I included all the effects and
get the coupling right [more to come]
  1405   Tue Feb 4 01:11:01 2014 taraNotesRefCavcomsol simulation for cavity suspension I'm trying to estimate the coupling
between seismic to displacement noise of
the cavity using COMSOL. 
  1407   Tue Mar 4 18:53:48 2014 taraNotesRefCavcomsol simulation for cavity suspensionI tried to estimate the coupling from seismic
to displacement noise. With the common mode
rejection taken into account, the coupling
  115   Thu May 6 00:05:29 2010 Frank, JanComputingRC noisecomsol/matlab modelWe finished
the first comsol model which where we can
modify the geometry automatically. The problem
  240   Wed Jul 28 21:53:10 2010 FrankNotesDAQconfusing cross-connect panel connectionsthe documents we have in the PSL lab about
the connection made in the PSL rack cross-connect
panel are not consistent with the current
  779   Fri Jan 6 00:53:03 2012 FrankDailyProgressSeismicconical springscleaned the conical springs Rana bought.
Will characterize and try them tomorrow
  250   Mon Aug 2 16:23:59 2010 FrankNotesDAQconnectins for PMC, RCAv and ACAV to VME-based system- personal notes -
current cross-connect connections
  354   Fri Sep 10 12:25:34 2010 FrankNotesLaserconstruction work done - Laser back onworkers finished the piping stuff for today
but have to come back to connect it to the
stuff one floor above. It's not the sprinkler
  765   Thu Dec 22 20:28:58 2011 FrankDailyProgressRefCavcopper shieldstapped a few #2-56 holes in the top of
the copper tube which will be used as a radiative
shield and heater for the cavities. The holes
  186   Tue Jun 29 17:57:40 2010 taracNotesPMCcoupling eff vs TemperatureWe had a problem with power coupling
efficiency to the PMC.  Sometime it
  524   Wed Mar 2 10:58:42 2011 FrankNotesComputerscrate crashed againrestarted it   
  505   Sun Feb 20 18:06:15 2011 taraNotesComputerscrate crashes Both crate crashes around 17:20 today.
I reset them back.
After we use the perl scripts for
  458   Mon Jan 31 19:42:36 2011 FrankNotesComputerscurrent IP-addressfor fb2 from outside is
  389   Wed Nov 10 22:36:59 2010 taraSummaryPMCcurrent PMC's OLG TF The
current plot for PMC's OLG TF is plotted
below. The RF V is 6V, Gain slider is 14
  781   Sat Jan 7 00:45:47 2012 FrankDailyProgressNoiseBudgetcurrent TTFSS noise budgetanalyzed the data taken yesterday with
the old TTFSS setup. Measured the EP noise
(out1, common path, right after the mixer)
  782   Wed Jan 11 20:50:08 2012 taraDailyProgressNoiseBudgetcurrent TTFSS noise budget As Frank proposed to use side band
frequency at 21.5 or 14.75 MHz, I checked
the HOM of both frequencies.
  544   Tue Mar 22 00:38:11 2011 taraDailyProgressBEATcurrent beat measurementToday I measured beat noise again to see
where we are after adjusting many parameters.
The beat measurements are plotted
  337   Wed Sep 1 15:22:39 2010 taraNotesRefCavcurrent parameters for cavities   Temperature on both cavities
are fairly constant over -8 hrs, still can't
simultaneously lock both cavities.                        
  259   Fri Aug 6 14:36:24 2010 Megan, FrankNotesRefCavcurrent slow actuator values- personal
notes - 
  220   Thu Jul 15 15:08:46 2010 FrankNotesPMCcurrent values to lock systempersonal notes to lock system remotely:
for PMC:
PMC voltage 203.5V --> DC offset
  2117   Mon Mar 5 22:17:45 2018 CraigDailyProgressComputerscymac3 ADC is spikyI've been working on our new ws1 all
day today, trying to get it back to where
ws3 was.  I got git working, recreated
  2119   Tue Mar 6 08:04:11 2018 GabrieleDailyProgressComputerscymac3 ADC is spikyThe real time model X3TST was not running.
I likely forgot to restart it after the power
outage of a week ago. 
  2121   Wed Mar 7 02:58:13 2018 ranaDailyProgressComputerscymac3 ADC is spikyI recommend Craig write a script called
  756   Thu Dec 8 21:31:26 2011 FrankNotesComputersdaq still broken, but differentreplaced the hard drive, created an new
ext3 file system and mounted it as /frames/full.
After forced fsck for the other drives computer
  757   Thu Dec 8 23:54:05 2011 FrankNotesComputersdaq still broken, but differentchecked the source code for the daqd. There
is only one line where one of the messages
occurs. Couldn't find the part of the source
  750   Wed Dec 7 23:26:02 2011 FrankNotesDAQdaqd crashed about a week agodaqd crashed on 12/2/2011 around 9.12am
without log entry. Last file : controls controls 
57833 Dec  2 09:12 C-R-1006881152-32.gwf.
  760   Fri Dec 9 11:49:17 2011 FrankSummaryDAQdaqd problems (which turn out to be not critical)Talked to Alex about the daqd and it's
strange behavior on our machine.

    The first thing is that
  850   Tue Feb 28 00:19:41 2012 FrankNotesDAQdaqd restartedrestarted the framebuilder process. Channel
list needs to be updated, i didn't clean
up the FSS channels so there are still old/unused
  320   Tue Aug 31 13:33:02 2010 taraNotesComputersdead channel, C3:PSL-ACAV_TEMPAVGYesterday, I reset the PSL crate behind
the SUN computer, but the channel C3:PSL-ACAV_TEMPAVG
is stil inactive.
  321   Tue Aug 31 13:40:00 2010 FrankNotesComputersdead channel, C3:PSL-ACAV_TEMPAVGlooks like some fault of the database.
/usr1/epics/psl/db/acav.db does not contain
the correct entry. check rcav.db and copy
  322   Tue Aug 31 14:50:53 2010 taraNotesComputersdead channel, C3:PSL-ACAV_TEMPAVG

  323   Tue Aug 31 14:52:41 2010 FrankNotesComputersdead channel, C3:PSL-ACAV_TEMPAVGmade the changes a minute ago. simply reboot
after changing the values in the startup.cmd
(those i didn't change)
  324   Tue Aug 31 15:04:51 2010 FrankNotesComputersdead channel, C3:PSL-ACAV_TEMPAVGbe carefull with the data you are taking
right now. it's wrong for your projection
as the power fluctuations are different when
  330   Tue Aug 31 16:15:51 2010 taraNotesComputersdead channel, C3:PSL-ACAV_TEMPAVG

  163   Tue Jun 15 13:36:18 2010 taracElectronics debugging PMC servoFrom the
bode plot, something is not quite right.
I'll debug the PMC servo. My plan is
  686   Sun Sep 18 22:11:33 2011 FrankNotesRefCavdifferential thermal sensitivitymade another step from 26.6degC to 30.6degC
(4 Kelvin). Checked beat frequency to be
~72.192MHz @26.6degC, so we can re-use the
  751   Wed Dec 7 23:39:06 2011 FrankNotesComputersdisk failure on fb2/ sdcstarted 3 days ago. first entry on
Dec  4 04:17:14 fb2 smartd[3490]:
Device: /dev/sdc, 589 Currently unreadable
  1790   Tue Dec 13 13:07:58 2016 yinziDailyProgressTempCtrldriver board updateI finished soldering together the other
two channels for temperature control. This
is what the board looks like now:
  1791   Tue Dec 13 18:20:41 2016 KojiDailyProgressTempCtrldriver board updatePlease don't use red WIMA (or
any film) capacitors for power line bypassing
(decoupling). These are for audio frequency
  1793   Fri Dec 16 12:43:52 2016 not KojiDailyProgressTempCtrldriver board updateWe seem to be lacking in ceramic caps of
this size or larger, same with electrolytics.
 We may need a restock at some stage.
  1794   Sat Dec 17 01:51:24 2016 KojiDailyProgressTempCtrldriver board update40m is the emergency stock for WB Labs,
vice versa.
  1766   Tue Nov 8 18:22:07 2016 yinziDailyProgressTempCtrldriver circuit updateSo after testing out the LT1012 op amp
in many simple configurations and not having
any of them work (and the measurements were
  1389   Mon Nov 25 15:28:12 2013 taraNotesRefCaveigenmodes of 1.45" refcavI realized that we have not checked the
eigenmodes of 1.45" cavity yet, so I
used comsol to find out several modes. The
  1024   Thu Jul 19 23:55:48 2012 taraNotesAOMellipticity of the beam through AOMI'm optimizing the AOM to make sure that
we have max power, and to minimize pointing 
due to frequency change, and minimize ellipticity
  1602   Sun Nov 1 20:50:36 2015 ranaHowToDocumentationelog etiquetteMama mia!    
  1603   Wed Nov 4 10:54:30 2015 AntonioHowToDocumentationelog etiquetteScusami :-(. D'ora in poi usero'
solo PDF :-)!!!

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