40m QIL Cryo_Lab CTN SUS_Lab TCS_Lab OMC_Lab CRIME_Lab FEA ENG_Labs OptContFac Mariner WBEEShop
  40m Log, Page 205 of 335  Not logged in ELOG logo
ID Date Author Type Category Subject Text Attachments
  6558   Tue Apr 24 09:58:37 2012 steveUpdatePEMearthquake 3.9 magnitudeLocal
eq shakes the lab
  6557   Mon Apr 23 23:20:07 2012 DenUpdatePEMmicrophonesTonight I wanted to measure the ambient
noise level using Blue Bird mics and figure
out if Panasonic WM61a or Primo EM172/173
  6556   Sat Apr 21 21:10:34 2012 JamieUpdateCDStrend frame issue partially resolved


  6555   Sat Apr 21 20:40:28 2012 JamieUpdateCDSframebuilder frame writing working again


  6554   Sat Apr 21 17:38:19 2012 JamieUpdateCDSdtt, dataviewer working; problem with trend frames


  6553   Fri Apr 20 23:02:25 2012 DenUpdateAdaptive Filteringfrequency domain filter DFT-LMS is a frequency domain adaptive
filter that demonstrates faster convergence
compared to the time-domain LMS filter.
  6552   Fri Apr 20 19:54:57 2012 JamieUpdateCDSCDS upgrade problemsI ran into a couple of snags today.
A big one is that the framebuilder
daqd started going haywire when I told it
  6551   Thu Apr 19 22:18:24 2012 DenUpdateAdaptive Filteringoaf algorithm: old vs new Here are the issues that I found
not quite accurate in the old oaf code:
1. There is no need to calculate
  6550   Thu Apr 19 16:21:04 2012 ZachUpdateComputer Scripts / ProgramsArbcav updated, made badassI have modified Arbcav to be way cooler  6x 
  6549   Thu Apr 19 09:45:43 2012 SureshUpdateGeneralMC2 Oplev signals redirected for use in WFS servo


  6548   Thu Apr 19 08:43:16 2012 JamieUpdateCDSoaf


  6547   Wed Apr 18 23:12:49 2012 DenUpdateCDSoafAdaptive filter outputs some non-zero signal
in the OFF position
  6546   Wed Apr 18 19:59:48 2012 JamieUpdateCDSCDS upgrade successThe upgrade is nearly complete:

    new daqd code is running
on fb
    the fe/daqd timing issue
  6545   Wed Apr 18 11:54:31 2012 JenneUpdateGeneralPower outage last night


  6544   Wed Apr 18 11:46:14 2012 JenneUpdateGeneralPower outage last night


  6543   Wed Apr 18 10:05:40 2012 JamieUpdateGeneralPower outage last nightAll of the front-ends are back up and I've
been able to recover local control of all
of the opitcs (snapshots from saturday).
  6542   Wed Apr 18 08:53:50 2012 JamieUpdateGeneralPower outage last nightApparently there was a catastrophic power
failure last night.  Bob says it took
out power in most of Pasadena.
  6541   Tue Apr 17 19:03:09 2012 JamieUpdateCDSCDS upgrade in progressUpgrade progresses, but not complete. 
There are some relatively minor issues, and
one potentially big issue.
  6540   Tue Apr 17 11:05:04 2012 JamieUpdateCDSCDS upgrade in progressI am continuing to attempt to upgrade the
CDS system to RTS 2.5.  Systems will
continue to be up and down for the rest of
  6539   Tue Apr 17 10:55:50 2012 RyanUpdateComputersUpdating aLIGO Conlog


  6538   Mon Apr 16 14:37:01 2012 DenUpdatePEMgur2_x


  6537   Mon Apr 16 09:44:54 2012 JenneUpdatePEMgur2_x


  6536   Mon Apr 16 09:10:37 2012 DenUpdatePEMgur2_xAlready not for the first time I notice
that GUR2 readjusts its X zero position
  6535   Sat Apr 14 00:19:35 2012 SureshOmnistructureLSCOptical Fibers for insitu RFPD characterisation    I have worked out the fibers
we need to get for the following distribution
  6534   Fri Apr 13 16:09:43 2012 SureshUpdateComputer Scripts / ProgramsACAD 2002 installed on C21530I have installed
ACAD 2002 on one of the Windows machines
  6533   Fri Apr 13 01:27:10 2012 JenneUpdateSUSOplevs recenteredIt's been a while since I think anyone
has done it, and several optics were pretty
far from centered, so I centered all of the
  6532   Thu Apr 12 23:52:49 2012 JenneUpdateLockingPRMI locked - 'bouncy'I am locking some things, and have the
PRM aligned, and it will stay locked for
short periods of time, but as Kiwamu warned
  6531   Thu Apr 12 23:12:16 2012 SureshUpdateIOOBeam Profile measurement: IPPOS beam: Possible Clipping


  6530   Thu Apr 12 22:04:17 2012 Mike J.UpdateComputersNew Hysteresis Model & PlotsThe new hysteresis model uses a triangle
wave with offset zero points as the position
function and a sinusoidal force function,
  6529   Thu Apr 12 20:56:07 2012 DenUpdatePEMdaqGUR1 XYZ, GUR2 XYZ, MC_F channels are now
recorded at 256 Hz.
  6528   Thu Apr 12 14:48:44 2012 SureshUpdateSUSlocal damping and WFS    WFS servo is moving
the MC mirror angles to minimise TEM01 and
TEM10 modes within the MC cavity.   
  6527   Thu Apr 12 08:49:14 2012 DenUpdateSUSlocal damping and WFSI tried to figure out what can add noise
below 0.5 Hz to the MC_F. I compared MC1,
MC2, MC3 suspos, suspit, susyaw and susside
  6526   Thu Apr 12 01:17:56 2012 SureshUpdateIOOBeam Profile measurement: IPPOS beam: Possible Clipping[Suresh, Jenne]
input beam is most probably being clipped
  6525   Thu Apr 12 00:40:45 2012 JenneUpdateSUSPRM, BS oplevs offThere's a beam dump after the HeNe on the
BS oplev table, since the IPPOS measurement
optics (steering mirrors) are in the way
  6524   Thu Apr 12 00:16:38 2012 JenneUpdateEnvironmentEarthquake - moderate 

M4.7  - Santa Isabel, Mexico
2012-04-12 06:48:38 UTC
  6523   Wed Apr 11 22:48:39 2012 ranaUpdateEnvironmentBLRMS   seis_blrms.png 
  6522   Wed Apr 11 18:19:51 2012 JenneUpdateIOOMode matching recollections and conclusionsAnother histogram.  This one allows
the MMT mirror positions to move, the MMT
incident angle for both curved optics to
  6521   Wed Apr 11 17:56:26 2012 JenneUpdateGeneralSummary of things to figure out with the IFOQuestions:
Power recycling gain
   * It should be ~40,
  6520   Wed Apr 11 16:33:16 2012 JenneBureaucracyGeneral40m Meeting Action ItemsAction
Items from Last Week:
  6519   Wed Apr 11 14:34:48 2012 JenneUpdateEnvironmentPlumbing guys are here


  6518   Wed Apr 11 12:25:11 2012 RyanUpdateComputersUpdating aLIGO ConlogOver the next few days, I will be working
on upgrading the aLIGO Conlog install to
include new bugfixes distributed by Patrick
  6517   Tue Apr 10 23:56:44 2012 ranaUpdateComputersSensorayNow that Mike has got the Sensoray working,
Jenne/Suresh should grab some new images
of the ETM cage as Keiko did so that we can
  6516   Tue Apr 10 17:02:29 2012 JenneUpdateIOOMode matching recollections and conclusions...Mostly just recollections at this point.
I re-looked at the mode matching's
sensitivity to misplaced optics.  Here
  6515   Tue Apr 10 13:42:54 2012 JenneUpdateEnvironmentPlumbing guys are hereI don't know why, but they're looking around
on the roof, and inside our ceiling above
the bathrooms.
  6514   Tue Apr 10 11:08:29 2012 taraUpdatePSLcurved mirror behind AOM removedWe removed the curved mirror behind the
AOM (ROC=0.3m) on PSL table. The mirror is
now in PSL lab. See PSL:905
  6513   Mon Apr 9 20:02:19 2012 Mike J.UpdateComputersSensorayThe highest resolution available is 720x480
pixels. Bit depth of captured images and
video is most likely 16 bits per pixel. Video
  6512   Mon Apr 9 18:18:14 2012 kiwamuUpdateLSCDRMI time seriesHere is a time series when the DRMI is
being locked.
You can see that the AS110 goes up
  6511   Mon Apr 9 17:03:38 2012 DenUpdateEnvironmentLms vs WienerI tried to figure out why offline LMS filter
subtract seismic noise much better from MC_F
then the Wiener filter. I did the calculations
  6510   Mon Apr 9 15:09:34 2012 JenneUpdateLSCLocked MICH

  6509   Mon Apr 9 15:02:30 2012 JenneUpdateLSCLocked MICHI was going to try some locking, but things
are a little too noisy. 
Just so Kiwamu knows what I did today,
ELOG V3.1.3-