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  40m Log, Page 271 of 341  Not logged in ELOG logo
ID Date Author Type Category Subjectdown Text Attachments
  4695   Wed May 11 22:54:53 2011 JenneUpdateTreasureETMY trans QPD installedI put the ETMY trans QPD in. 
The ETMY trans beam was already going
toward the TRY DC PD, and a CCD camera. 
  
  8320   Thu Mar 21 08:11:53 2013 SteveUpdate40m UpgradingETMY table swap

    

       
            
  
  8321   Thu Mar 21 08:46:46 2013 ManasaUpdate40m UpgradingETMY table swapYes! We are swapping.
I'll be there very soon!
  
  8355   Tue Mar 26 16:10:31 2013 JamieUpdate40m UpgradingETMY table levelingSteve's suggestion for how to level the
end table using "swivel leveling mounts":
 end-tabel-leveling.png 
  8330   Thu Mar 21 17:06:34 2013 SteveUpdate40m UpgradingETMY table is out

    

       
            
 ETMYtableSupport.jpg 
  8340   Mon Mar 25 18:07:31 2013 SteveUpdate40m UpgradingETMY table is out

    

       
            
 shimmingEE.jpg 
  7429   Sat Sep 22 01:03:30 2012 DenUpdatePEMETMY tableI've installed Guralp readout box back
and it turned out that it does not work with
voltage provided from the rack (+13.76 0
 X.pdfY.pdfZ.pdf 
  7539   Fri Oct 12 22:44:49 2012 DenUpdatePEMETMY table

    

       
            
 6x 
  7540   Sun Oct 14 11:41:42 2012 DenUpdatePEMETMY table

    

       
            
 DSC_4739.JPG14OCT2012.pdf14OCT2012.xml 
  14433   Mon Feb 4 20:13:39 2019 gautamUpdateSUSETMY suspension oddnessI looked at the free-swinging sensor data
from two nights ago, and am struggling with
the interpretation. 
 ETMY_sensors_1_Feb_2019_2230_PST.pdfETMY_UL.pdfETMY_sensors_timeDomain.pdf 
  14441   Thu Feb 7 19:34:18 2019 gautamUpdateSUSETMY suspension oddnessI did some tests of the electronics chain
today.


Drove a sine-wave using
 ETMY_sensors.pdfpostDiag.pdf 
  15661   Fri Nov 6 11:36:37 2020 gautamUpdateGeneralETMY suspension eigenmodesAttachment
#1 shows the main
 ETMY_pkFitNaive.pdfETMY.tar.bz2 
  15671   Tue Nov 10 15:13:41 2020 ranaUpdateGeneralETMY suspension eigenmodesFor the input matrix diagonalization, it
seemed to me that when we had a significant
seismic event or a re-alignment of the optic
  
  15673   Thu Nov 12 14:26:35 2020 gautamUpdateGeneralETMY suspension eigenmodesThe results from the ringdown are attached
- in summary:


The peak positions have
 ETMY.tar.bz2 
  2280   Tue Nov 17 11:09:43 2009 KojiConfigurationSUSETMY suspension conencted to megatron ADC/DACI have connected ETMY sus electronics to
megatron ADC/DAC.
We continue this state until 15:00
  
  2281   Tue Nov 17 13:39:37 2009 KojiConfigurationSUSETMY suspension conencted to megatron ADC/DAC0) Now the connection for the ETMY suspension
was restored in a usual state. It damps
well.
  
  2282   Tue Nov 17 15:23:06 2009 KojiConfigurationSUSETMY suspension conencted to megatron ADC/DACOK.
Now, Timing/ADC/DAC are working. It's almost
there.
1) As a temporaly
  
  2285   Tue Nov 17 21:10:30 2009 KojiConfigurationSUSETMY suspension conencted to megatron ADC/DACKoji, Rana
The megatron DAC was temporaly connected
to the suspension electronics for the DAC
  
  2290   Wed Nov 18 11:27:33 2009 Koji, josephbConfigurationSUSETMY suspension conencted to megatron ADC/DAC

    
        
  
  2291   Wed Nov 18 12:33:30 2009 Koji, josephbConfigurationSUSETMY suspension conencted to megatron ADC/DACHurraaaah!
We've got the damping of the suspension.
The Oplev loops has also worked!
The
 Untitled.png 
  2293   Wed Nov 18 16:24:25 2009 peteConfigurationSUSETMY suspension conencted to megatron ADC/DAC/cvs/cds/caltech/target/fb/daqd -c daqdrc
This starts the FB.
Now the dataviewer and DTT work!
  
  14615   Thu May 16 23:31:55 2019 gautamUpdateSUSETMY suspension characterizationHere is my analysis. I think there are
still some problems with this suspension.

 6x 
  14620   Fri May 17 17:01:08 2019 gautamUpdateSUSETMY suspension characterizationTo investigate my mapping of the eigenfrequencies
to eigenmodes, I checked the Oplev spectra
for the last few hours, when the Oplev spot
 etmy_oplevs.pdf 
  12428   Mon Aug 22 13:06:11 2016 gautamUpdateSUSETMY suspendedToday morning, I suspended ETMY and made
the same checks dscribed below. The clamping
went smoothly, 5 in. lb. of torque seems
 IMG_3019.JPG 
  5029   Mon Jul 25 11:46:28 2011 steveUpdateSUSETMY sus problem hunt[Kiwamu / Steve]
We checked
 ETMY_AA_ADC.png 
  1447   Tue Mar 31 09:42:32 2009 steveUpdatePEMETMY sus damping restored againThe Caltech gasoline storage tank is being
upgraded.
They are jack hammering and digging
  
  472   Fri May 9 08:40:24 2008 steveUpdateSUSETMY sus damping restoredETMY lost damping at 19:10 last night.
There was no seismic event than.
Sus damping was restored this morning. 
  
  1439   Sun Mar 29 13:44:27 2009 steveUpdateSUSETMY sus damping restoredETMY sus damping was found to be tripped.
It was retored.
All fluorecent light were turned
  
  3455   Mon Aug 23 08:28:27 2010 steveUpdateSUSETMY sus damping restored    
  4931   Fri Jul 1 18:48:13 2011 JamieUpdateSUSETMY sus controller found to be in a bad stateI'm not sure what happened to ETMY SUS,
but it was in a pretty bad state.  Bad
burt restore, I would guess.
  
  4933   Fri Jul 1 20:22:24 2011 ranaUpdateSUSETMY sus controller found to be in a bad stateActually, ETMY was the only good one. They
should all have the 30 Hz High pass as the
damping filter. I think these details are
  
  12364   Wed Aug 3 10:52:03 2016 SteveUpdateGeneralETMY soaking dishETMY UL epoxy soaking dish. All teflon
in glass.

 
 SD1.jpgSD2.jpgSD3.jpg 
  9262   Wed Oct 23 09:17:33 2013 SteveUpdateSUSETMY sensors compared to ETMX ETMY sensors are glitching or getting
kicked up.
Atm3, There is no seismic activity
 ETMYglitching.pngOSEMsensorsETMY&X.pngETMYgettingKickedUp.pngdrive-damp.png 
  9263   Wed Oct 23 11:42:28 2013 ranaUpdateSUSETMY sensors compared to ETMX  This is not really definitive.
The 0.1-0.3 Hz band is not the right one
to look for seismic transients - it should
  
  9265   Wed Oct 23 15:48:06 2013 ranaUpdateSUSETMY sensors compared to ETMXI noticed by eye that during one event
when ETMY was getting kicked up, its CPU
meter (C1:FEC-47_CPU_METER) went RED.
 remote-control-cockroach.jpg 
  9266   Wed Oct 23 17:30:17 2013 jamieUpdateSUSETMY sensors compared to ETMXc1scy has been running slow (compared to
c1scx, which does basically the exact same
thing *) for many moons now.  We've
  
  9267   Wed Oct 23 18:24:56 2013 ranaUpdateSUSETMY sensors compared to ETMX 
 While that would be good -
it doesn't address the EDCU problem at hand.
  
  9268   Wed Oct 23 18:28:01 2013 JenneUpdateSUSETMY sensors compared to ETMXWe have now watched the ETMY computer situation
for a little over 150 minutes, and have seen
one 'event' where the CPU time of the scy
 Screenshot-Untitled_Window.pngScreenshot-Untitled_Window-1.png 
  9277   Thu Oct 24 10:31:25 2013 SteveUpdateSUSETMY sensors compared to ETMXAtm1,  The strong glitches are back.
Atm2,  SUS-ETMX & Y_SENSOR_LL
Damping OFF at (ref0 & ref1). damping
 24h_glitching.pngdampingOffref.png 
  9307   Tue Oct 29 10:51:16 2013 MasayukiUpdateSUSETMY sensors compared to ETMX[Steve, Masayuki]
We lowered the
  
  9311   Tue Oct 29 22:33:57 2013 ranaUpdateSUSETMY sensors compared to ETMX

    

       
            
 Scratch-n-SniffStinkyDooBabyShowerGame1.jpg 
  14562   Mon Apr 22 22:43:15 2019 gautamUpdateSUSETMY sensor diagnosis Here are the results from this test. The
data for 17 April is with the DC bias for
ETMY set to the nominal values (which gives
 ETMY_sensorSpectra_consolidated.pdf 
  4047   Mon Dec 13 18:06:43 2010 JenneUpdateSUSETMY resuspended, ready to install. Tip Tilt realigned, ready to install.[Koji, Jenne]
I wish I could use a bigger font
for this, but, 
 StatusTable.png 
  12397   Wed Aug 10 23:45:03 2016 gautam UpdateSUSETMY re-suspendedSummary:


 7x 
  12398   Thu Aug 11 00:20:41 2016 KojiUpdateSUSETMY re-suspendedHow much pitch bias do you need in order
to correct this pitch misalignment?
That may give you the idea how bad
  
  12401   Thu Aug 11 11:56:40 2016 gautamUpdateSUSETMY re-suspended


 pitchBalancingWithBias.PDF 
  5194   Thu Aug 11 16:07:37 2011 steveUpdateSUSETMY rack cables strain releived   P1080159.JPGP1080160.JPG 
  12384   Tue Aug 9 00:44:43 2016 gautam UpdateSUSETMY patch-upSummary:

Given that ETMX looks to be in
good shape and the optic and suspension tower
  
  12386   Tue Aug 9 15:27:57 2016 gautam UpdateSUSETMY patch-upThe pickle
pickers came off nicely and both magnets
seem to be glued on okay. The alignment of
 IMG_2996.JPGIMG_2997.JPG 
  12390   Wed Aug 10 03:08:03 2016 gautam UpdateSUSETMY patch-up[lydia, gautam]

Rana felt it was alright to use
the wire clamp and suspension cage in its
  
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