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New entries since:Wed Dec 31 16:00:00 1969
ID Date Author Type Category Subjectup Text Attachments
  7215   Fri Aug 17 08:33:46 2012 SteveUpdateCamerasvideo cameras in the dark

    

       
            
 dark.jpg 
  7216   Fri Aug 17 09:34:27 2012 KojiUpdateCamerasvideo cameras in the darkI used the LED illuminations at ETMX and BS
yesterday for a tour.
I am afraid that I left them on.
  
  7217   Fri Aug 17 10:38:15 2012 SteveUpdateCamerasvideo cameras in the dark> I used the LED illuminations at ETMX and
BS yesterday for a tour.
> I am afraid that I left them on.
  
  7219   Fri Aug 17 14:45:51 2012 ranaUpdateCamerasvideo cameras in the dark The problem with the glow on the
ETMY face is due to the red light being scattered
off of the optical table from the HeNe laser
  
  7236   Mon Aug 20 18:10:44 2012 JenneUpdateCamerasvideo capture script copied over to real scripts directoryThe videocapture.py script is now in ...../scripts/general/
, along with the videoswitch. 
Also, there's a button gui on the
  
  10259   Wed Jul 23 10:39:18 2014 SteveUpdateCamerasvideo quad processors replacedQuad
processor 2 & 3 were replaced.
  
  2120   Mon Oct 19 18:14:28 2009 robUpdateCamerasvideo switch brokenThe Chameleon HB (by Knox) video switch
that we use for routing video signals into
the control room monitors is broken. 
  
  8036   Fri Feb 8 12:43:26 2013 yutaUpdateComputersvideocapture.py now supports movie capturingI updated /opt/rtcds/caltech/c1/scripts/general/videoscripts.py
so that it supports 
  
  8612   Wed May 22 00:42:13 2013 KojiSummarySUSviolin QWhile looking at the decay of the violin
mode of the PRM, I made a simple measurement
of the decay rate.
  
  1611   Wed May 20 01:53:48 2009 rob, peteUpdateLockingviolin mode filters in drstep_bangRecently the watch script was having difficulty
grabbing a lock for more than a few seconds. 
Rob discovered that the violin notch filters
  
  3875   Sat Nov 6 01:54:15 2010 FrankSummaryComputersvirus definition file update on laptop for dinocami took
some pictures with the dinocam this afternoon.
I used the laptop computer next to it using
  
  4447   Mon Mar 28 16:19:23 2011 steveFrogsPhotosvisithing 5th gradersSuresh is captivating his audience with
gravity waves on last Friday, March 25
 P1070475.JPG 
  3682   Fri Oct 8 17:36:16 2010 steveFrogsPhotosvisiting undergradsProf Alan Weistein guided the 24 student
through the 40m. His performance was rated
as  an enthusiastic 9.5
 P1060916.JPGP1060921.JPGP1060922.JPGP1060915.JPG 
  5434   Fri Sep 16 16:07:28 2011 steveUpdateSAFETYvisitors safety trainingPaul, Mirko and Katrin visiting grad students
received the 40m basic safety training.
 P1080241.JPG 
  12810   Tue Feb 7 19:14:59 2017 JohannesUpdateCDSvme crate backplane adapter board layoutAfter fighting with Altium for what seems
like an eternity I have finished putting
my vision of the vme crate backplane adapter
 vme_backplane.pdf 
  12781   Tue Jan 31 22:15:02 2017 JohannesUpdateCDSvme crate backplane adapter boardsI made a crude sketch for how Lydia and
I envision the connector situation on the
back of the vme crates to be solved. Essentially
 vme_backplane_conn_sketch.jpg 
  6305   Wed Feb 22 16:55:16 2012 JamieUpdateSUSwacky state of SUS input matricesWhile Kiwamu and I were trying to investigate
the the vertex
glitches we were noticing excess noise
  
  6307   Thu Feb 23 02:20:07 2012 ZachUpdateSUSwacky state of SUS input matricesThis reminds me that the whole Dr. SUS
situation never got taken care of. Where
  
  2823   Wed Apr 21 10:09:23 2010 kiwamuUpdateGreen Lockingwaist positon of Gaussian beam in PPKTP crystalsTheoretically the waist position of
a Gaussian beam (1064) in our PPKTP crystal
differs by ~6.7 mm from that of the incident
 focal_positin_edit.png 
  2850   Tue Apr 27 14:18:53 2010 kiwamuUpdateGreen Lockingwaist positon of Gaussian beam in PPKTP crystalsThe mode profile of Gaussian beams in
our PPKTP crystals was calculated.
I
 mode_in_PPKTP.png 
  3325   Thu Jul 29 21:13:39 2010 DmassUpdateGreen Lockingwaist positon of Gaussian beam in PPKTP crystals


   
        
            
  
  3327   Thu Jul 29 22:58:25 2010 kiwamuUpdateGreen Lockingwaist positon of Gaussian beam in PPKTP crystals- As you said, I just calculated the waist
position in the crystal because the speed
of light changes in a medium and eventually
  
  3328   Fri Jul 30 00:02:15 2010 DmassUpdateGreen Lockingwaist positon of Gaussian beam in PPKTP crystals


   
        
            
  
  15566   Wed Sep 9 20:52:45 2020 ranaSummaryIOOwandering line in IMCsince the summary pages are working again,
I was clicking through and noticed that there's
a wandering peak in the whitened IMC spectrogram
  
  11487   Mon Aug 10 15:25:05 2015 SteveUpdatePEMwasp nestThe wasp nest will be removed tomorrow
from from the out side of the east arm window.

The resonant frequency of the newly
 waspN.jpg 
  2309   Fri Nov 20 16:18:56 2009 robConfigurationSUSwatchdog rampdownI've changed the watchdog rampdown script
so it brings the SUS watchdogs to 220, instead
of the 150 it previously targeted. 
  
  2372   Wed Dec 9 17:51:03 2009 kiwamuUpdateSUSwatchdogsPlease do not touch
the watchdogs for all SUSs except for MCs,
  
  6060   Thu Dec 1 17:33:18 2011 kiwamuUpdateSUSwatchdogs fixedThe watchdogs'
issue has been solved and they are now working
  
  3456   Mon Aug 23 15:24:24 2010 kiwamuConfigurationSUSwatchdogs offFor the new CDS test, I turned
off the watchdogs for PRM, SRM, BS, ITMs
  
  4024   Tue Dec 7 20:38:17 2010 kiwamuUpdateSUSwatchdogs off at ITMX and ETMXI am leaving ITMX and ETMX freely swinging,
so that later I can take the spectra and
diagonalize the input matrices.
  
  4031   Wed Dec 8 22:47:09 2010 kiwamuUpdateSUSwatchdogs off at ITMX and ETMXTonight,
swing again.
  
  11767   Mon Nov 16 16:18:34 2015 gautamUpdateGeneralwater leak along Y-arm?A Caltech maintenance staff dropped by
at around noon today, and told me that he
had seen a small puddle of water on the other
  
  11771   Tue Nov 17 10:06:53 2015 SteveUpdateGeneralwater leak in east arm


 eastArmLeakyPipeInsideWall.jpgwd18ft.jpg 
  1991   Fri Sep 18 14:25:00 2009 robOmnistructurePSLwater under the laser chillerrob, koji, steve
We noticed some water (about a cup)
on the floor under the NESLAB chiller today. 
  
  1992   Fri Sep 18 16:05:08 2009 JenneOmnistructurePSLwater under the laser chiller

    
        
  
  2297   Thu Nov 19 09:25:19 2009 steveUpdateMOPAwater was added to the laser chillerI added ~500 cc of distilled water to the
laser chiller yesterday.
 htempwtr.png 
  8099   Mon Feb 18 18:28:01 2013 yutaBureaucracyAlignmentwe are going to pump downWe
will start preparing for pumping down. Main
goal for this is to demonstrate PRFPMI using
  
  13475   Thu Dec 14 08:59:17 2017 SteveUpdateGeneralwe are here   8_days.png 
  1627   Wed May 27 10:54:09 2009 robUpdatePSLwe don't understand the chiller (broken)


   
        
            
  
  1628   Wed May 27 15:59:44 2009 robUpdatePSLwe don't understand the chiller (broken)steve, alberto, rob
After some futzing around with the
chiller, we have come to the tentative conclusion
  
  7693   Fri Nov 9 11:38:38 2012 jamieUpdateGeneralwe're closing upAfter a brief look this morning, I called
it and declared that we were ok to close
up.  The access connector is almost
  
  152   Fri Nov 30 21:27:24 2007 ranaDAQPEMweather / stacis / c1pem1I was trying to add some Seis BLRMS channels
to the c1pem1 processor so that we could
have DMT trends.
  
  189   Wed Dec 12 22:24:48 2007 tobinFrogsPEMweather stationI poked at the weather station briefly this
evening.
  
  11291   Thu May 14 17:41:10 2015 ranaUpdatePEMweather station and Guralp maintenanceToday Steve and I tried to recenter the
Guralps. The breakout box technique didn't
work for us, so we just turned the leveling
 GurPost_150514.pngsecretWeatherTrends.png 
  418   Tue Apr 8 09:08:54 2008 steveConfigurationPEMweather station disconnectedWe can not leave cables in the walkways and
go on vacation.
I disconnected the weather station from the
 toast.jpg 
  516   Wed Jun 4 10:18:52 2008 steveUpdatePSLwedged SS beam trapI moved the SS trap over to the psl table.
Texas super # 8 was used from the large shipment.
TXs#8 scattering measured as before, meaning
 trap1.pngtrap2.png 
  2027   Wed Sep 30 02:01:28 2009 robUpdateLockingweekIt's been a miserable week for lock acquisition,
with each night worst than the last. 
The nadir was around Sunday night, when I
 srmcpu.png 
  5151   Tue Aug 9 03:05:05 2011 kiwamuSummaryGeneralweekly reportSummary of the week ending Aug 8th.   
  764   Wed Jul 30 12:03:44 2008 MashaSummaryAuxiliary lockingweekly summaryI've been learning about mode matching/beam
propagation, so I can work on getting more
 mz_fiber_noise0730.pngsetup0730.JPGMZnoise_sources0727.png 
  804   Wed Aug 6 13:57:44 2008 MashaSummaryAuxiliary lockingweekly summaryFinished second progress report.

Working on improving the sensitivity of the
  
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