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ID Datedown Author Type Category Subject Text Attachments
  5868   Fri Nov 11 00:18:53 2011 ZachUpdateElectronicsPrecision temperature controllerI have made   
  5867   Thu Nov 10 22:00:38 2011 MirkoUpdateAdaptive FilteringLooking into MC_F & PSL misalignment


   
        
            
 6x 
  5866   Thu Nov 10 20:20:57 2011 SureshUpdateIOOMC Spot positions have shifted after accelerometer installation on MC2 chamber[ Jenne, Suresh ]
We were tying the fix the WFS and
noticed that the PSL --> MC alignment
  
  5865   Thu Nov 10 19:41:24 2011 JenneUpdateSUSMusings on SUS dewhitening, and MC ELP28'sThe
following will be a stream-of-consciousness,
approximately chronological story of my last
  
  5864   Thu Nov 10 16:44:54 2011 MirkoUpdateAdaptive FilteringLooking into MC_F & PSL misalignment [Den, Mirko]
While doing the things below we accidentally
misaligned the PSL laser. Thanks to Suresh
 10112011076.jpg10112011073.jpg 
  5863   Thu Nov 10 16:26:46 2011 MirkoUpdateComputersFirefox kills elogHad to restart the elog many times. For
some reason firefox 8 on Win 7 kills the
elog pretty consistently when trying to make
  
  5862   Thu Nov 10 12:28:31 2011 JenneUpdateSUSMC2 is being a little wild...WFS to blameMirko and  Den are measuring MC_F,
which they will report about later, but I
noticed that MC2 is totally crazy right now. 
 WFSscreenshot.png 
  5861   Thu Nov 10 11:52:00 2011 JenneUpdateCDSRFM signal transferringI am not so happy with the control signals
that are coming into the OAF via the RFM/Dolphin/shmem. 
The MCL/MCF signal travels via RFM
 OAF_rfm_signals_MCL.pdfOAF_rfm_signals_MICH.pdfOAF_rfm_signals_PRCL.pdfOAF_rfm_signals_GUR1X.pdf 
  5860   Thu Nov 10 05:54:23 2011 kiwamuUpdateGreen LockingBeat-note detected : PSL vs Y arm[Katrin / Kiwamu]
The beat-note
 DSC_3606_small.jpg 
  5859   Wed Nov 9 21:48:43 2011 SureshUpdateIOOWFS Servo included into the MC_AutolockerThe WFS
servo loop will come on 5 seconds after the
MC is locked. 
  
  5858   Wed Nov 9 21:32:38 2011 MirkoUpdateAdaptive FilteringPut accelerometers 4-6 on top of MC2 tankPut the accelerometers on top of MC2. Orientated
as the arms,GUR1 and STS1:
 09112011069.jpgCoherence_quiet_time.pngCoherence_quiet_time.fig 
  5857   Wed Nov 9 21:21:30 2011 SureshUpdateIOOMC WFS: Output matrix determined with loops closed.With the loops closed I ran the $SCRIPTS/MC/WFS/senseWFSoutMATRX
script and analysed the lockin outputs with
  
  5856   Wed Nov 9 20:35:58 2011 MirkoUpdateAdaptive FilteringSeismic noise injection into the MCVery elaborated measurement ;-)
On 11-11-08:
18:40 Stomp near STS1 for 2mins
 8x 
  5855   Wed Nov 9 19:08:18 2011 SureshUpdateelogrestarted elogElog was not responding and was restarted.   
  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
again.
  
  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.
In
  
  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:
 contour_loss.pngcontour_MM.png 
  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
 OAF-MCL-Delay-9Nov2011.pdf 
  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
 fluctuation_test.png 
  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. 
 etmxtripped.pngetmxOpl.png 
  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
 7x 
  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
 Dolphn_TF.png 
  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. 
 WFS_servo-20111108.png 
  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.
 pmcHV.png 
  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) 
The
scripts and screens needed to make the MC
  
ELOG V3.1.3-