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  40m Log, Page 223 of 339  Not logged in ELOG logo
ID Date Author Type Category Subject Text Attachments
  5854   Wed Nov 9 18:02:42 2011 jamieUpdateCDSISCEX front-end working again (for the moment...)The c1iscex IO chassis seems to be working
again, and the iscex front-end is running
  5853   Wed Nov 9 17:41:17 2011 JenneUpdateComputersETMX restoredJamie did computer magic.  I burt
restored scxepics, and restored ETMX damping.
  5852   Wed Nov 9 16:49:17 2011 kiwamuUpdateGreen LockingY end laser temperature with slow input connectedIndeed it is strange. I took a quick look
at it.
  5851   Wed Nov 9 16:29:36 2011 KojiSummaryLSCCharacterization of the Power Recycled MichelsonDifficult to understand.
The mode matching does not change
the recycling gain. It changes the coupling
  5850   Wed Nov 9 16:03:21 2011 kiwamuSummaryGeneralGoal this weekGoal of this week : 
ALS on the Y arm
  5849   Wed Nov 9 14:49:07 2011 kiwamuSummaryLSCCharacterization of the Power Recycled MichelsonEDIT
by KI:
  5848   Wed Nov 9 14:23:35 2011 JenneUpdateAdaptive FilteringOAF MC Delay MeasurementAs described in elog
2063 and the mevans
document, we need to measure the TF of
  5847   Wed Nov 9 13:44:04 2011 MirkoUpdateComputersNDS1 missing channels in matlabThe Matlab NDS1 access seems to only work
for some channels. With other  channels it
just hangs 'Busy' and does nothing. 
  5846   Wed Nov 9 12:05:08 2011 KatrinUpdateGreen LockingYARM error signal and feedback signalerror signal = signal measured behind the
low-pass filter
feedback signal = output of the gain
  5845   Wed Nov 9 10:35:30 2011 jamieUpdateSUSETMX oplev is down and sus damping restored


  5844   Wed Nov 9 07:57:39 2011 steveUpdateSUSETMX oplev is down and sus damping restoredThe ETMX oplev returning beam is well centered
on the qpd. We lost this signal 2 days ago.
I will check on the qpd. 
  5843   Tue Nov 8 19:08:21 2011 MirkoHowToComputersNew DV[quote]To use the new ligoDV (previously GEO
DV) to look at 40m data, open up a matlab,
set up for mDV as usual,
  5842   Tue Nov 8 18:06:43 2011 MirkoUpdateAdaptive FilteringNoise injections to MC1-3 PIT & YAWWith fancy analysis tools approaching usability
I looked some more into noise projections
from PIT,YAW motion of the MC mirrors to
  5841   Tue Nov 8 17:48:21 2011 MirkoUpdateCDSDolphin weirdnessHad since yesterday evening some trouble
with getting a channel from rfm on c1sus
to oaf on c1lsc via dolphin. Several restarts
  5840   Tue Nov 8 12:07:08 2011 SureshUpdateIOOMC WFS Servo: suppression of WFS error signals below 3HzI switched on the WFS servos with the output
matrix (open loop) determined last Friday. 
  5839   Tue Nov 8 10:34:42 2011 SureshUpdateIOOMC spot decenter measured

  5838   Mon Nov 7 22:20:18 2011 kiwamuUpdateGreen LockingRe:YARM length fluctuationA nice plot !
Can you put another y-axis on the
right hand side of the same plot  in
  5837   Mon Nov 7 17:38:18 2011 KatrinUpdateGreen LockingYARM length fluctuation   fluctuation.pngfluctuation_length.pngfluctuation_Hz_length.png 
  5836   Mon Nov 7 17:27:28 2011 jamieUpdateComputersISCEX IO chassis timing slave deadIt appears that the timing slave in the
c1iscex IO chassis is dead.  It's front
"link" lights are dark, although
  5835   Mon Nov 7 16:42:56 2011 JenneUpdateAdaptive FilteringBLRMS's to monitor OAF channelsI copied Mirko's PEM BLRMS block, and made
it a library part.  I don't know where
such things should live, so I just left it
  5834   Mon Nov 7 15:49:26 2011 jamieUpdateIOOWFS output matrix measured (open loop)


  5833   Mon Nov 7 15:43:25 2011 jamieUpdateLSCLSC model recompiled


  5832   Mon Nov 7 15:15:21 2011 JenneUpdateLSCLSC model recompiled

  5831   Mon Nov 7 14:58:17 2011 steveUpdateGeneralChamber illuminator remote switches installed


  5830   Mon Nov 7 14:50:19 2011 JenneUpdateComputersISCEX is having a bad dayI clicked on the FE status screen, just
to check on things, and everything on the
c1iscex section was 
  5829   Mon Nov 7 12:51:44 2011 ZachUpdateelogRestarted elogI've noticed that it always takes running
the script twice for it to actually work.
I think there's something wrong with how
  5828   Mon Nov 7 11:50:42 2011 JenneUpdateelogRestarted elogElog restart script killed the elog, but
didn't restart it.  Restarted by hand.
  5827   Mon Nov 7 08:25:15 2011 steveUpdateGeneralno electricity on Nov. 20The
Nov.19 interruption was rescheduled to be
on Nov.20,2011
  5826   Mon Nov 7 08:08:24 2011 steveUpdateIOOPMC lockedThe PMC acted like it was sleeping. The
HV slider was dead. The MC locked instantly
as the PMC had transmission.
  5825   Sun Nov 6 21:09:03 2011 ranaUpdateAdaptive Filteringcoherence

  5824   Sun Nov 6 16:58:25 2011 ZachUpdateSUSDr. SUS failed--NDS2 problems again Dr. SUS failed while trying to   
  5823   Sun Nov 6 09:39:25 2011 Dr. SUSUpdateSUSOptics kickedAll suspended optics have been kicked at Sun
Nov  6 09:39:25 PST 2011. Watchdogs will
be reengaged in 5 hours. Please refrain from
  5822   Sat Nov 5 21:19:08 2011 ZachUpdateSUSDr. SUS paths updated--question of human oversight remainsOk, here's the deal:

    For the time being, I
have written a "
  5821   Sat Nov 5 14:54:59 2011 KojiUpdateASCASS scripts goneIn any case, the daily backup of the scripts
are found in /cvs/cds/caltech/scripts_archive. 
  5820   Sat Nov 5 04:30:21 2011 kiwamuUpdateGreen LockingRe:Passive summing box modificationsI think you also should check the PZT's
capacitance of the 700mW LightWave because
2.36 nF is the one for the 1W Innolight laser.
  5819   Sat Nov 5 01:10:29 2011 SureshUpdateIOOWFS output matrix measured (open loop) 
scripts and screens needed to make the MC
  5818   Sat Nov 5 00:24:13 2011 SureshUpdateASCASS scripts gone

  5817   Sat Nov 5 00:04:23 2011 kiwamuUpdateASCASS scripts goneDid
somebody delete all the scripts in /opt/rtcds/caltech/c1/scripts/ASS
  5816   Fri Nov 4 21:52:58 2011 DenUpdateAdaptive Filteringcoherence[Mirko, Den]
We still think about the coherence
between seismic noise and mode cleaner length.
  5815   Fri Nov 4 21:15:38 2011 KatrinUpdateGreen LockingNew fiber coupler (YARM)63% coupling efficiency into the new fiber
collimator (Thorlabs XXXX) and the blue fiber.This
should be sufficient for a beat measurement
  5814   Fri Nov 4 19:30:06 2011 ranaUpdateSUSDr. SUS paths updated--question of human oversight remainsMy inclination is to not do the writing
of the matrices automatically nor to do the
weekly kicks. Its nice to have long locks
  5813   Fri Nov 4 16:23:41 2011 SureshUpdateIOOMC spot decenter measuredAfter Kiwamu adjusted the MC2 PIT to accommodate
the limited range of the PZT1 ( elog
),  I remeasured the spot positions
  5812   Fri Nov 4 15:26:54 2011 JenneUpdateLSCLSC model recompiledI moved the place where we take the OAF
Degree of Freedom signals from - now it's
the error point rather than the feedback
  5811   Fri Nov 4 15:24:13 2011 MirkoUpdateAdaptive FilteringAdaptive FF on the MC doesn't make sense[Den, Jenne, Mirko]
  5810   Fri Nov 4 14:18:24 2011 MIrkoUpdateAdaptive FilteringCoherence between seismometers and MC lengthLooking into the coherence between the
seismometers and IMC length (MC_F):
FIrst with the seismometers only
  5809   Fri Nov 4 13:53:33 2011 KatrinUpdateGreen LockingSHG temperature (YARM)

  5808   Fri Nov 4 13:13:25 2011 ZachUpdateGreen LockingPDH box #17 modified, tooI also modified the Y-Arm PDH box itself
slightly. Previously, there was a flying
10k resistor from the SWEEP input to TP2.
  5807   Fri Nov 4 13:04:50 2011 ZachUpdateGreen LockingPassive summing box modificationsI spent some time the other day trying
to diagnose the problem with the Y Arm universal
PDH box (S/N 17), which Katrin
  5806   Fri Nov 4 05:24:56 2011 kiwamuUpdateLSCoffset introcuded in MC and IFO-configure script modified[Offsets in MC]
 I have introduce an offset
in MC2 PIT because the PZT1 again started
  5805   Fri Nov 4 00:25:49 2011 ZachUpdateSUSDr. SUS paths updated--question of human oversight remains
    I have replaced all instances
ELOG V3.1.3-