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  40m Log, Page 242 of 344  Not logged in ELOG logo
IDdown Date Author Type Category Subject Text Attachments
  5146   Tue Aug 9 01:35:45 2011 SureshUpdateSUSETMX Side Sensor slow channel down for a long timeThe slow signal from the side sensor on
ETMX was last seen in action sometime in
May 2010!  And then the frame builder
 ETMX-SDSEN_trend1.pngETMX_SDSEN_trend2.png 
  5145   Mon Aug 8 22:12:58 2011 NicoleSummarySUSDaily SummaryToday I balanced the mirror, finished putting
together the second photosensor, and finished
my photosensor circuit box! 
 frontview.jpgfrontview.jpg 
  5144   Mon Aug 8 20:23:14 2011 JennyUpdatePSLNetwork analyzer and PD set up to measure amplitude response of PZT

    

       
            
  
  5143   Mon Aug 8 19:45:27 2011 jamieUpdateCDSactivateDQ script run; SUS channels being acquired again> Also the BS is missing its DAQ channels
again (JAMIE !) so we can't diagnose it with
the free swinging method.
  
  5142   Mon Aug 8 15:52:39 2011 steveUpdateVACback ground rga scanThe RGA region is beeing monitored during
the vent. This will tell us how clean the
RGA itself is.
 bg-d5.jpgpresBg-d5.jpg 
  5141   Mon Aug 8 15:20:49 2011 kiwamuUpdateSUSinspection on ETMY (round 1)Since
ETMY have been showing some strange behaviors
we deeply inspect the ETMY suspension.
 Screen_shot_2011-08-08_at_15.08.23.png 
  5140   Mon Aug 8 14:21:03 2011 steveUpdatePEMParticle counts controlled

    

       
            
 P1080149.JPGP1080150.JPG 
  5139   Mon Aug 8 13:24:00 2011 steveMetaphysicsTreasure Monday morning

    

       
            
 P1080147.JPG 
  5138   Mon Aug 8 12:08:05 2011 ranaUpdateSUSsus at atm   Untitled.png 
  5137   Mon Aug 8 00:58:26 2011 ranaUpdateCDSdiagonalization of MC input matrixBesides the purpose of correctly tuning
the suspensions, my hidden goal in the input
matrix diagonalization has been to figure
 null.png 
  5136   Mon Aug 8 00:12:58 2011 ranaUpdateCDSdiagonalization of MC input matrixI've finally   
  5135   Sun Aug 7 18:41:12 2011 JenneUpdateGreen LockingX green beam re-aligned


   
        
            
  
  5134   Sun Aug 7 14:11:53 2011 JenneUpdatePEMParticle counts through the roof[Jenne, Kiwamu]
While Kiwamu was finalizing the X
green alignment, I started to prepare to
 ParticleCount_High_7Aug2011.png 
  5133   Sun Aug 7 14:01:58 2011 kiwamuUpdateGreen LockingX green beam re-aligned[Jenne / Kiwamu]
 The
  
  5132   Sun Aug 7 11:10:54 2011 SureshSummaryGeneralOSEM positioning
  
  5131   Sat Aug 6 13:38:02 2011 ranaSummaryGeneralSummary of today's in-vacuum workThis OSEM placement is just the OPPOSITE
of what the proper placement is.
Usually, we want to put them in so
  
  5130   Sat Aug 6 03:10:05 2011 SureshSummaryGeneralSummary of today's in-vacuum workThe table below gives the OSEM positions
as seen on the slow chanels C1:SUS-ETMX_{UL,UR,LL,LR,SD}PDMon
 ETMX_OSEMs.pngAfter_osem_adjustment.JPGBefore_osem_adj.JPG 
  5129   Fri Aug 5 22:54:29 2011 kiwamuMetaphysicsTreasureCrane crew here Monday morningAlso, according to Steve, there will be some
crane guys for fixing the Y end crane issue
  
  5128   Fri Aug 5 20:44:26 2011 jamieMetaphysicsTreasureFilm crew here Monday morningJust a reminder that a film crew will
be here Monday morning, filming Christian
Ott for some Discovery channel show.
  
  5127   Fri Aug 5 20:37:34 2011 jamieSummaryGeneralSummary of today's in-vacuum work[Jamie, Suresh, Jenne, Koji, Kiwamu]
After this morning's hiccup
with the east end crane, we decided to
  
  5126   Fri Aug 5 18:29:35 2011 JennyUpdatePSLNetwork analyzer and PD set up to measure amplitude response of PZT

    

       
            
  
  5125   Fri Aug 5 15:11:24 2011 kiwamuUpdateSUSRe: cross couplingThere is a page on the 40m wiki explaining
the procedure.
 
  
  5124   Fri Aug 5 14:03:12 2011 steveUpdateGeneralmalfunctioning crane at ETMYThe horizontal trolley drive stopped working 
at the east end this morning. It is working
intermittently. In the worst case we can
  
  5123   Fri Aug 5 13:51:51 2011 steveUpdateSUScross couplingWe need a plan how to minimize cross coupling
in the OSEMs now
  
  5122   Fri Aug 5 08:08:42 2011 kiwamuSummaryGeneralplan todayToday's main
mission is : adjustment of the arm length
  
  5121   Fri Aug 5 04:03:16 2011 KojiUpdateLSCREFL165 PDREFL165 PD was made and tested. The characterization
results are in the PDF file.
Resonance at 166.12MHz
 P8041394.JPGP8041395.JPGREFL165_test_110804_KA.pdf 
  5120   Fri Aug 5 02:00:09 2011 kiwamuSummaryGeneralsummary of today's invac work [Jamie, Jenne, Suresh,
Steve, Koji, Kiwamu]
  
  5119   Thu Aug 4 20:05:23 2011 NicoleUpdateSUSNew Horizontal Sliding Base Mount for TT suspension testingIn order to more-securely mount the TT
supsion to the horizontal sliding base, I
have made a sub-mounting plate (upon Koji's
 topplateview.jpgplatform.jpglasersetup.jpg 
  5118   Thu Aug 4 11:18:12 2011 ranaUpdateSUSsus at atmRemember that the Oplevs are not good references
because of the temperature sensitivity. The
week long trend shows lots of 24 hour fluctuations.
  
  5117   Thu Aug 4 09:42:19 2011 KojiUpdateABSLABSL Laser shutter closedThe shutter of the ABSL laser is closed
for the vent work.
  
  5116   Thu Aug 4 08:25:51 2011 steveUpdateSUSsus at atmITMX and PRM moved alot.  BS and  
ITMY just a little based on oplev reference.
 SUSatm.pngoplevsaftervent.png 
  5115   Thu Aug 4 01:49:08 2011 SureshUpdateIOOMC is lockedI measured the power transmitted from the
PSL to the MC.
It is 19mW.
  
  5114   Thu Aug 4 00:04:52 2011 JennyUpdatePSLNetwork analyzer and PD set up to measure amplitude response of PZTToday I placed the PDA255 photodiode on
the PSL table to catch the small amount of
beam power reflected by the second polarizing
  
  5113   Wed Aug 3 22:31:38 2011 KojiUpdateLSCREFL33 PDREFL33 is ready for the installation
Characterization results of REFL33
is found in the PDF attachment.
 REFL33_test_110801_KA.pdf 
  5112   Wed Aug 3 22:22:47 2011 KojiUpdateLSCREFL165 PDThis REFL165 was good in terms of RF, but
I forgot to make the DC path functioning.
I will try some ideas to fix this
  
  5111   Wed Aug 3 16:18:30 2011 steveUpdateVACvent is almost finishedP1 at 750 Torr,  Vent valve VV1 is
left open to atm. It will reach equilibrium
in an hour. The PSL power is not turned down
 vent8h.jpg 
  5110   Wed Aug 3 14:40:32 2011 kiwamuSummaryGeneralminutes of 40m meeting : plan tomorrowTomorrow's main goal
is : let the both X and Y green light come
  
  5109   Wed Aug 3 14:20:49 2011 steveUpdateSUSITMX and PRM damping restoredITMX watchdog tripped around 5 Torr 
and the PRM around 450 Torr of this vent.
They were restored than.
  
  5108   Wed Aug 3 12:37:57 2011 KojiSummarySUSWeekly SummaryI vote for making an adapter plate between
the sliding plate and the bottom base.

  
  5107   Wed Aug 3 12:27:01 2011 NicoleSummarySUSWeekly SummaryThis week I have determined the linear
region for my photosensor. I have determined
the linear region to be -14.32 V/cm in the
 calibrationplot.jpgcalibrationplot.jpgcalibrationplot.jpgnewholestobe.JPG 
  5106   Wed Aug 3 12:24:08 2011 Manuel, IshwitaUpdateWienerFilteringWeekly summaryLast Friday (Jul 29) we reinstalled the
blue breakout box, and changed the names
of the C1:PEM channels. Elog
  
  5105   Wed Aug 3 11:34:59 2011 kiwamuUpdateVACRe: ventAn
important rule during the in-vac work :
  
  5104   Wed Aug 3 09:40:13 2011 steveUpdateVACventThe vacuum system is coming up to atm.
The vent was started with slow N2 flow. The
PSL output is blocked 2 places on the table.
 pzt2011Aug3.png 
  5103   Wed Aug 3 04:29:48 2011 kiwamuUpdateIOOpeparation for low power MC : HWP+PBS installed[Suresh / Kiwamu]
 The incident beam power going into
  
  5102   Wed Aug 3 02:28:08 2011 Manuel, IshwitaUpdateWienerFilteringWiener Filtering in X-armWiener Filtering was applied on the data
collected from the X-arm during the time:
GPS
 WFgur1X1Y2X2YN20000srate2048.pngWFgur2XN20000srate2048.pngWFgur2YN20000srate2048.pngSchermata-6.pngSchermata-7.png 
  5101   Wed Aug 3 02:20:33 2011 KojiUpdateLSCREFL165 PDREFL165 PD has been made from the old 166MHz
PD.
As the required inductance was ~10nF
 REFL165_schematic_110802_KA.pdfP8031393.JPGP8031391.JPG 
  5100   Wed Aug 3 01:30:04 2011 JenneUpdateLSCAbsolute length of Xarm and Yarm measuredSo far, this is just preliminary, because   
  5099   Tue Aug 2 23:14:21 2011 NicoleUpdateSUSCorrected Screw Alignment in TT Suspension BaseThe TT suspension base was not able to
be securely mounted to the optical table
(i.e. mounted with 4 screws)
 newholes.jpgmountedmirrorflash.jpg 
  5098   Tue Aug 2 23:02:48 2011 NicoleUpdateSUSFixed Accelerometer

 
 shakerposts.jpgnewclips.jpgclipstoamplifier.jpg 
  5097   Tue Aug 2 19:05:13 2011 kiwamuUpdateIOOpeparation for low power MC : HWP+PBS installed[Steve / Kiwamu]
 
 attenuator.png 
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