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  40m Log, Page 226 of 344  Not logged in ELOG logo
ID Date Author Type Category Subject Text Attachments
  5959   Sat Nov 19 10:41:30 2011 ranaUpdateIOOMC_WFS Servo: The MC2_TRANS_PIT and YAW loops switched ONI'm quite sure that this is not good: since
MC2 can
produce a signal in WFS1 and WFS2, it cannot
  5958   Sat Nov 19 06:04:43 2011 SureshUpdateIOOMC_WFS Servo: The MC2_TRANS_PIT and YAW loops switched ONWithout adding significant amounts of noise
to other WFS loops I have engaged the MC2_TRANS_PIT
and YAW loops. 
  5957   Sat Nov 19 01:26:16 2011 DenUpdateIOOMode cleaner noise projection


  5956   Sat Nov 19 00:47:24 2011 ZachUpdateGreen LockingY-Arm locked with PDH Box #17I installed the newly modified PDH  error_sig_m_11_18_11.png 
  5955   Sat Nov 19 00:34:36 2011 ZachUpdateRF Systemwhy the Newport 6000 isn't working I just figured out why the Newport
6000 isn't stabilizing the temperature. It is designed
  5954   Sat Nov 19 00:09:02 2011 ZachUpdateRF SystemFoam house on EOM


  5953   Fri Nov 18 23:44:33 2011 ranaUpdateIOOMode cleaner noise projectionCould use some more detail on how this
measurement was done. It looks like you used
the SUSPOS signal with the mirror moving,
  5952   Fri Nov 18 19:57:19 2011 MirkoUpdateIOOMode cleaner noise projection 
Some more info on this:
  5951   Fri Nov 18 19:07:07 2011 JenneUpdateRF SystemFoam house on EOM[Jenne, Zach, Frank]
Frank helped Zach and I cable up
at PT-100 RTD, and make sure it worked with
  5950   Fri Nov 18 16:37:14 2011 steveUpdateVACpreparing for ac power interruptionThe vacuum is ready for no AC power for
1 hr on Sunday morning at 10am
  5949   Fri Nov 18 15:45:11 2011 MirkoUpdateIOOMode cleaner noise projection[Rana, Den, Mirko]
Updated the MC noise projection to
include the longitudinal motion of the MC
  5947   Fri Nov 18 15:35:18 2011 kiwamuUpdateIOORF generation box : power switch malfunctionJenne
gave me a spare LED power switch
  5946   Fri Nov 18 12:11:24 2011 ZachUpdateGreen LockingY end green PDH servo : it's okay


  5945   Fri Nov 18 11:28:39 2011 ranaUpdateGreen LockingY end green PDH servo : it's okay


  5944   Fri Nov 18 11:16:08 2011 ranaUpdateIOOeom box


  5943   Fri Nov 18 08:29:35 2011 SureshUpdateIOOHEPA air-flow effect on WFS.[Koji, Suresh]
    We investigated
the effect of airflow from the HEPA filters
  5942   Fri Nov 18 02:50:10 2011 kiwamuUpdateIOORF generation box : power switch malfunction[Suresh / Kiwamu]
power switch button of the RF generation
  5941   Fri Nov 18 01:51:37 2011 KojiUpdateIOOStochmon updateUpdate
of the stochmon status
  5939   Fri Nov 18 01:27:04 2011 DenUpdateIOOMC locked[Mirko, Den]
While the MC was unlocked (and the
local damping off) we've measured the coherence
  5938   Fri Nov 18 01:12:14 2011 SureshUpdateCDSMC1 LR dead for > 1 month; now revived temporarily[Den, Mirko, Suresh]
    We were investigating
why there is no correlation between MC1 osem
  5937   Fri Nov 18 00:36:23 2011 ZachUpdateGreen LockingY-Arm PDH box modifiedI modified the Y-Arm PDH box (S/N 17)  pdh17_tf_vs_liso_11_17_11.png 
  5936   Fri Nov 18 00:25:10 2011 ZachUpdateelogrestarted with script.   
  5935   Thu Nov 17 23:47:43 2011 DenUpdateIOOMC1_SENSORThe most interesting plot did not uploaded
in the previous elog.
Upload now local MC1_SENSOR signals.
  5934   Thu Nov 17 23:44:48 2011 DenUpdateIOOMC1_SENSORWe've found that one of the  MC1_SENSORS
does not work properly.
See the figure.
  5933   Thu Nov 17 23:38:40 2011 DenUpdateIOOMC unlockedMC is unlocked to measure the free swing
of the MC mirrors with the local sensors.
Autolocker is disabled.
  5932   Thu Nov 17 22:24:19 2011 DenUpdateAdaptive FilteringMC1_COILAnalyzing coherence between MC length and
signals on MC1, MC2 and MC3 coils we have
noticed that MC1 COIL signal is not coherent
  5931   Thu Nov 17 21:12:09 2011 KojiUpdatePSLHEPA setting changed[Koji, Suresh]
8:50PM HEPA@100% for the test
8:55PM HEPA@0%
  5930   Thu Nov 17 18:20:26 2011 kiwamuUpdateGreen LockingY arm ALS : 1st trial of noise budgetThe
noise budget on the Y arm ALS has begun.
  5929   Thu Nov 17 17:21:22 2011 kiwamuUpdateGreen LockingY end green PDH servo : it's okay


  5928   Thu Nov 17 17:03:28 2011 MIrkoUpdateIOOMC noise projectionAnother go at the noise projection from
MC1-3 pit/yaw to MC length. This  time injecting
into the MC autoalignment FB (e.g. C1:IOO-WFS1_PIT_EXC
  5927   Thu Nov 17 15:19:06 2011 steveUpdateSUSTi spring plunger to hold OSEM is not affortableOur existing 300 series SS plungers from
McMastercar #8476A43 are silver plated as
Atm2 shows.
  5926   Thu Nov 17 14:38:16 2011 ZachUpdateRF SystemStochmon?It turns out that we don't have all the
parts I would need to do a full prototype
  5925   Thu Nov 17 13:58:12 2011 SureshUpdateIOOMC unlocked and misaligned.

  5924   Thu Nov 17 11:51:14 2011 JenneUpdateEnvironmentIncandescent vs. fluorescent lights?I'm just on an elog roll this morning...
Again while poking around inside
the IFO room, I noticed that they have replaced
  5923   Thu Nov 17 11:35:27 2011 KojiUpdateRF SystemStochmon?The  Stochmon channels for 11&55MHz
have been reasonably working since last night.
The output is not yet calibrated
  5922   Thu Nov 17 11:27:58 2011 JenneUpdatePSLHEPA turned downI was measuring things to see how big my
adapter plate needs to be, and I decided
that we'd had enough days of the HEPA being
  5921   Thu Nov 17 11:04:02 2011 JenneUpdateRF SystemStochmon?Is there an update on Stochmon?  Are
the signals acquired somewhere already? 
What's the current deal-io?  The new
  5920   Thu Nov 17 03:46:52 2011 kiwamuUpdateGreen LockingPSL doubling had been diabledI
found that the temperature controller of
the PSL doubling oven had been disabled.
  5919   Wed Nov 16 23:50:40 2011 DenUpdateAdaptive Filteringseismic noise injection[Micro, Den]
Analyzing coherence of seismic noise
and mode cleaner length we've figured out
  5918   Wed Nov 16 21:01:08 2011 JenneUpdateTreasureeom boxI made a super sweet new foam box for our
EOM.  It's awesome, and should be reasonably
easy to duplicate.  Check out the 
  5917   Wed Nov 16 20:30:27 2011 not KojiUpdateIOOMC unlocked and misaligned.


  5916   Wed Nov 16 18:14:09 2011 KojiUpdateIOOMC unlocked and misaligned.Actually, do we need to reset the filter
history at every lock loss of the MC?
Those DC offsets were necessary to
  5915   Wed Nov 16 17:40:48 2011 MirkoUpdateIOOMC unlocked and misaligned.MC fell out of lock and was then quite
badly misaligned. Mostly in pitch. I realigned
it and it locked ok.
  5914   Wed Nov 16 17:29:46 2011 kiwamuUpdateGreen LockingSome updates on the Y end green PDH

  5913   Wed Nov 16 17:03:19 2011 KojiUpdateIOOMC2 Shifted in Pitch, corrected by adjusting the pitch biasMC was not locked for more than 5 hours
because of the misalignment.
Noticed that MC2 WFS feedback filters
  5912   Wed Nov 16 14:34:18 2011 steveUpdatePSLIOO beam moves in pitchC1:IOO-QPD_ANG_VERT beam movement 
in 1 degree C temp change in 3 hrs
  5911   Wed Nov 16 12:21:33 2011 KojiUpdateeloggooglebot (Re: restarted)- elogd itself is a sort of web server
which has no freedom to put our own file,
we can not put robots.txt
  5910   Wed Nov 16 10:53:35 2011 SureshUpdateIOOMC2 Shifted in Pitch, corrected by adjusting the pitch bias

  5909   Wed Nov 16 10:25:57 2011 steveUpdateSUSPRM damping restoredThe  PRM lost damping about a day
ago. It was restored.
  5908   Wed Nov 16 10:13:13 2011 jamieUpdateelogrestarted


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