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ID Dateup Author Type Category Subject Text Attachments
  1565   Fri May 8 15:40:44 2009 peteUpdateLockingprogressively weaker locksthe align script was run after the third
lock here.  it would have been interesting
to see the arm powers in a 4th lock 
 powers_3lock.pdf 
  1566   Fri May 8 16:03:31 2009 JenneUpdatePEMUpdate on Jenne's Filtering StuffTo include the plots that I've been working
on in some form other than on my computer,
here they are:
 H1S5OneMonthWienerCompBLACK.pngH1S5BandLimitedTimePlot.png 
  1567   Fri May 8 16:29:53 2009 ranaUpdateComputer Scripts / Programselog and NDSLooks like the new NDS client worked. Attached
is 12 hours of BLRMS.
 Untitled.png 
  1568   Sat May 9 00:15:21 2009 YoichiUpdatePSLLaser head temperature oscillationAfter the laser cooling pipe was unclogged,
the laser head temperature has been oscillating
in 24h period.
 laser.png 
  1569   Sat May 9 02:20:11 2009 JenneUpdatePSLLaser head temperature oscillation[quote]After the laser cooling pipe was unclogged,
the laser head temperature has been oscillating
in 24h period.
  
  1570   Sat May 9 15:19:10 2009 ranaUpdatePSLLaser head temperature oscillationThis is 8 days of 10-minute trend.

DTEC is just the feedback control signal
 Picture_2.png 
  1571   Sun May 10 13:34:32 2009 carynUpdatePEMUnplugged Guralp channelsI unplugged Guralp EW1b and Guralp Vert1b
and plugged in temp sensors temporarily.
Guralp NS1b is still plugged in.
  
  1572   Sun May 10 13:41:17 2009 steveUpdateVACETMY damping restored, VC1 openedETMY damping restored.
Cryo  interlock closed VC1 ~2
days ago. P1 is 6.3 mTorr. Cryo temp 12K
  
  1573   Mon May 11 11:49:20 2009 steveUpdatePSLMOPA cooling water lines are backwards[quote]This is 8 days of 10-minute trend.

DTEC is just the feedback control signal
 htempvar80d.jpg 
  1574   Mon May 11 12:25:03 2009 josephb,AlexUpdateComputersfb40m down for patchingThe 40m frame builder is currently being
patched to be able utilize the full 14 TB
of the new raid array (as opposed to being
  
  1575   Tue May 12 01:11:55 2009 YoichiUpdateLSCDARM response (DC Readout)I measured the DARM response with DC readout.

This time, I first measured the open loop
 SUS_Resp.pngDARM_Resp.png 
  1576   Tue May 12 01:22:51 2009 YoichiUpdateLSCArm lossUsing the armLoss script (/cvs/cds/caltech/scripts/LSC/armLoss),
I measured the round trip loss (RTL) of the
arms.
  
  1577   Tue May 12 15:22:09 2009 YoichiUpdateLSCArm Finesse[quote]
It looks as if the measured DARM response
is skewed by an extra low pass filter at
  
  1578   Tue May 12 17:26:56 2009 peteUpdateoplevsetmy oplev quad was badPete, Rob
After looking at some oplev noise
spectra in DTT, we discovered that the ETMY
 bad_oplev_quad.pdf 
  1579   Wed May 13 02:53:12 2009 robSummaryloreChannel Hopping: That ancient enemy (MC problems)We were stymied tonight by a problem which
began late this afternoon.  The MC would
periodically go angularly unstable, breaking
  
  1580   Wed May 13 03:05:13 2009 peteUpdateoplevsetmy oplev quad was bad


   
        
            
  
  1581   Wed May 13 12:41:14 2009 josephbUpdateCamerasTiming and stability tests of GigE Camera codeAt the request of people down at LLO I've
been trying to work on the reliability and
speed of the GigE camera code.  In my
 newCodeFPS.pngnewCodeFPS_hist.png 
  1582   Wed May 13 14:43:29 2009 robSummaryloreChannel Hopping: That ancient enemy (MC problems)


   
        
            
 MC3sidemon.png 
  1583   Wed May 13 21:15:04 2009 ranaSummarySUSChannel Hopping: That ancient enemy (MC problems)The MC side problem could also be the side
tramp unit problem. Set the tramp to 0 and
see if that helps.
  
  1584   Thu May 14 00:15:39 2009 robSummarySUSChannel Hopping: That ancient enemy (MC problems)[quote]The MC side problem could also be the
side tramp unit problem. Set the tramp to
0 and see if that helps.[/quote]
 sidemon.png 
  1585   Thu May 14 02:36:05 2009 peteUpdateLockingunstable IFOIt seems that the MC3 problem is intermittent
(one-day trend attached).  I tried to
take advantage of a "clean MC3"
 mc3.jpg 
  1586   Thu May 14 15:28:28 2009 steveSummarySUSApril 24 earthquake effect on MC2[quote][quote]The MC side problem could also
be the side tramp unit problem. Set the tramp
to 0 and see if that helps.[/quote]
 eq042409.jpg 
  1587   Thu May 14 16:07:20 2009 peteSummarySUSChannel Hopping: That ancient enemy (MC problems)[quote][quote]The MC side problem could also
be the side tramp unit problem. Set the tramp
to 0 and see if that helps.[/quote]
 mc3_5days.jpg 
  1588   Fri May 15 00:02:34 2009 peteUpdateSUSETMX coils look OKI checked the four rear coils on ETMX by
exciting XXCOIL_EXC channel in DTT with amplitude
1000@ 500 Hz and observing the oplev PERROR
  
  1589   Fri May 15 14:05:14 2009 DmassHowToComputersHow To: Crash the ElogThe Elog started crashing last night. It
turns out I was the culprit, and whenever
I tried to upload a certain 500kb .png picture,
  
  1590   Fri May 15 16:47:44 2009 josephbUpdateCamerasImproved camera codeAt Rob's request I've added the following
features to the camera code.
The camera server, which can be started
  
  1591   Fri May 15 17:30:00 2009 robUpdateLSCarms, coils, locksThis is the two arms locked, for an hour. 
No integrator in either loop, but from this
it looks like ETMY may have a bigger length2angle
 armslock_no_int.png 
  1592   Sat May 16 16:20:33 2009 robUpdateLSCarms, coils, locks, #2


   
        
            
 twoproblems.pngcoil_imbalanceETMY.pngITMXalignment.png 
  1593   Sun May 17 14:35:52 2009 YoichiUpdateVACVC1 openedI found the VC1 was closed and the pressure
was 4.5e-3 torr.
I tweaked the optical sensor (cryopump temperature),
  
  1594   Sun May 17 20:50:38 2009 robOmnistructureEnvironmentmag 5.0 earthquake in inglewood2009 May 18  03:39:36 UTC



   Details
  
  1595   Sun May 17 21:45:40 2009 robUpdateASCITMX oplev centered    
  1596   Sun May 17 23:22:19 2009 ranaUpdateEnvironmentseisBLRMS for the past 3 weeksLooks like Chris Wipf's fix of using fclose
worked for the NDS client.
The attached plot shows the minute trend
 Untitled.png 
  1597   Mon May 18 01:54:35 2009 ranaUpdatePEMUnplugged Guralp channelsTo see if Caryn's data dropouts were happening,
I looked at a trend of all of our temperature
channels. Looks OK now.
 Untitled.png 
  1598   Mon May 18 02:18:17 2009 ranaSummarySEIUsing STACIS w/ a good position sensor[FONT=Verdana]WE turned off STACIS a few years
ago because we noticed that it was causing
noise below a few Hz and making
 stacis40.png 
  1599   Mon May 18 10:06:56 2009 carynUpdatePEMTemp sensor[quote]To see if Caryn's data dropouts were
happening, I looked at a trend of all of
our temperature channels. Looks OK now.
 datadropout.pngcoolerpic1.jpgcoolerpic2.jpg 
  1600   Mon May 18 15:31:11 2009 ranaUpdatePEMTemp sensor[quote]Picture of cooler for posterity is
attached[/quote]
 Untitled.png 
  1601   Mon May 18 19:44:52 2009 rana, steveConfigurationVACCryo Pump turned off and valved off: 1 beer can onlyI was seeing some excess noise in the ETMY
oplev yaw and so we turned off the cryo and
restarted c1vac2 to get the turbo pump channels
  
  1602   Mon May 18 20:16:20 2009 ranaConfigurationVACnot itThere was essentially no change in the ETMY
oplev spectrum with the cryo off!
 a.png 
  1603   Mon May 18 21:34:18 2009 ranaConfigurationSUSETMY f2pRatio script runNow that the ETMY optical lever is not so
bad, I ran the f2pRatio script and it seems
to have worked.
  
  1604   Tue May 19 09:34:29 2009 steveConfigurationVACIFO is not pumped & CRYO is being regeneratedMorning Vacuum condition: IFO is not being
pumped, P1 pressure is 1.8 mTorr and rising
(see P1 pressure plot of 100 min ).
 cryoreg.jpgcryo30d.jpg 
  1605   Tue May 19 12:30:41 2009 robConfigurationSUSETMY f2pRatio script run[quote]Now that the ETMY optical lever is
not so bad, I ran the f2pRatio script and
it seems to have worked.
 f2ademo.png 
  1606   Tue May 19 15:54:29 2009 JenneUpdatePEMMore Plots for the S5 H1:DARM Wiener Filtering....Even more plots for the Wiener filtering!
We have a set of spectrograms, which
show (in color) the amplitude spectrum, at
 6x 
  1607   Tue May 19 15:57:07 2009 steveUpdateIOOMC2 damping restored after EQ  Earthquake mag 4.0 at Lennox, Ca
    trips MC2 watchdogs
      http://quake.usgs.gov/recenteqs/Quakes/ci10411545.html
 acc.jpg 
  1608   Tue May 19 16:08:03 2009 ranaSummarySEIEUCLIDFrom Stuart Aston, I've attached a picture
of the EUCLID position sensor:
 Picture_6.png 
  1609   Tue May 19 16:18:45 2009 steveConfigurationVACIFO pressure is 4.2e-7 Torr with CRYO pump[quote]Morning Vacuum condition: IFO is not
being pumped, P1 pressure is 1.8 mTorr and
rising (see P1 pressure plot of 100 min ).
  
  1610   Wed May 20 01:41:19 2009 peteUpdateVACcryopump probably not itI found some neat signal analysis software
for my mac (http://www.faberacoustical.com/products/),
and took a spectrum of the ambient noise
  
  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
  
  1612   Wed May 20 09:55:18 2009 steveUpdatePEMoplev servos turned offAll oplevs servos turned off to protect
our suspentions from vibration due to drilling
and pounding in CES high bay area.
 ACpart6m.jpg 
  1613   Wed May 20 10:43:17 2009 steveOmnistructureEnvironmentaccelerometers sensitivity


   
        
            
 eq5m4.jpg 
  1614   Wed May 20 16:03:52 2009 steveOmnistructureEnvironmentusing OSEMs to look at seismic activityRana suggested using OSEM sensing voltages
as guide lines to look seismic activity.
As you see todays drilling and tumping
 eqOSEM5m4.jpg 
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