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ID Datedown Author Type Category Subject Text Attachments
  3862   Thu Nov 4 17:24:49 2010 steveUpdateGeneralconflat flanges for MIT8 pieces of 10" CF blanks were shipped
to MIT
 P1070020.JPG 
  3861   Thu Nov 4 15:27:33 2010 josephb, yutaUpdateCDSc1ioo test points not workingProblem:
We can't access any of the c1ioo
computer testpoints.  Dataviewer and
  
  3860   Thu Nov 4 15:15:43 2010 josephbUpdateCDSModified feCodeGen.pl, fmseq.pl, and suspension screensFeature Requested:
Have the CPU_meter change change
color at various alarm levels.  These
  
  3859   Thu Nov 4 03:13:46 2010 SureshUpdateLockingFibre coupling 1064nm light at the south-end table[Kiwamu,
Suresh]
We
  
  3858   Wed Nov 3 23:58:45 2010 ranaUpdateElectronicsCougarsI looked at this web page: http://www.teledyne-cougar.com/Index.asp
for the RF company that Rich has recently
started using.
  
  3857   Wed Nov 3 21:19:40 2010 yutaUpdateCDSput LOCKIN to c1ioo model and checked(Joe, Yuta)

Summary:
 Screenshot_C1IOO_LOCKIN.png 
  3856   Wed Nov 3 19:14:00 2010 ranaUpdatePSLPMC mode matching updateI moved the lens just before the PMC to
check the mode matching landscape. The PMC
trans went up from ~6.5 to ~6.8. That's 5%
  
  3855   Wed Nov 3 17:01:01 2010 josephbSummaryCDSComparison of RFM read times Problem:
RFM reads are slow.  Rolf has
said it should take 2-3 microseconds per
  
  3854   Wed Nov 3 16:49:31 2010 steveUpdateGeneralstorage cabinet is in placeThe south end of IFO room 104 was reshuffled.
The flow bench was moved all the way to the
south end to create more room for the crane
 P1070018.JPG 
  3853   Wed Nov 3 15:13:55 2010 josephbUpdateCDSTemporary RFM slow read work aroundProblem:
Each RFM read in the c1mcs model
is adding ~7 microseconds to the cycle time. 
  
  3852   Wed Nov 3 09:32:00 2010 ranaSummaryCDSEurocard board swapping When swapping Eurocard boards, it
is safest to first turn down the power supplies
and then do the swapping. 
  
  3851   Wed Nov 3 03:00:47 2010 KojiSummaryGreen Lockingcoarse locked green beat frequencyWow! Great guys!!   
  3850   Wed Nov 3 02:37:39 2010 yutaSummaryGreen Lockingcoarse locked green beat frequency(Kiwamu, Yuta)

 Screenshot_LowFreqLock.png 
  3849   Wed Nov 3 02:23:11 2010 yutaSummaryCDSchecking whitening filter boardSummary:
  Last night, I found that some
of the input channels have wrong hardware
 MC3SEN.png 
  3848   Tue Nov 2 16:49:02 2010 JenneConfigurationCamerasCabling on the PSL tableDear whomever setup the camera on the SW
corner of the PSL table,
It would be handy if, even for temporary
  
  3847   Tue Nov 2 16:24:07 2010 KojiUpdateAuxiliary lockingAlignment for the green in the X trans table [Kiwamu Koji]
Today we found the green beam
from the end was totally missing at the vertex.
  
  3846   Tue Nov 2 15:24:18 2010 josephbUpdateCDSc1ioo and c1mcs only sending MC_L, MC1_PIT, MC1_YAWIn order to have the c1mcs model run, we're
running with only 3 RFM channels between
c1ioo and c1mcs at the moment.  This
  
  3845   Tue Nov 2 13:51:40 2010 josephb, yutaUpdateCDSRFM slowdown problemProblem:
Each RFM memory location which needs
to be read by a front end model slows the
  
  3844   Tue Nov 2 11:34:53 2010 josephb, alexUpdateCDSdiagconfd running, excitations back in dttProblem:
Diagnostic test tools was starting
with errors.
  
  3843   Tue Nov 2 00:17:01 2010 SureshConfigurationLockingTemporary changes to the Video MuxFiber
coupling 1064 nm light at the end of X arm
This
  
  3842   Mon Nov 1 23:31:05 2010 yutaUpdateCDSchecked input hardware filter in single frequencyBackground:
  For input filter, we have analog
whitening filter and also digital whitening
  
  3841   Mon Nov 1 19:32:08 2010 yutaSummaryCDSfb crashed? during c1ioo and c1mcs connection at ASCFrame builder
died again!!
  
  3840   Mon Nov 1 17:27:47 2010 JenneUpdateSUSPRM ready for installation into chamber[Jenne, Suresh]
Over the weekend, Bob and Daphen
gave the PRM a 48hr. vacuum bake.  This
  
  3839   Mon Nov 1 16:43:24 2010 KojiSummaryCDSCDS time delay measurementUm, Beautiful.   
  3838   Mon Nov 1 15:47:15 2010 yutaSummaryCDSCDS time delay measurementBackground:
  I measured CDS time delay last
week, but because of my lack of understanding
 downupsampling.pngCDSdelay2.png 
  3837   Mon Nov 1 15:35:41 2010 josephbUpdateCDSFront end USR and CPU times now recorded by DAQProblem:
We have no record of how long the
CPUs are taking to perform a cycle's worth
  
  3836   Mon Nov 1 14:53:30 2010 josephb, alex, rolfUpdateCDSAlex updated FB and mx_streams codeProblem:
The framebuilder was being flaky. 
MX_streams would go down, prevent testpoints
  
  3835   Mon Nov 1 12:38:56 2010 Leo SingerConfigurationComputerspython-sqlite installed on AllegraI installed the Python bindings for sqlite
on Allegra using
$ sudo yum install python-sqlite
  
  3834   Mon Nov 1 11:34:08 2010 josephbUpdateCDSCA.Client.Exception spam fixedProblem:
CA.Client.Exception...............................................
  
  3833   Mon Nov 1 10:28:41 2010 steveBureaucracySAFETYSuresh received 40m safety trainingOur new postdoc Suresh Doravari received
40m specific safety training last week.
  
  3832   Mon Nov 1 10:17:55 2010 steveUpdateGeneralbreakers relabelledPedro of the electrical shop helped to
retrace wires from the racks to the breakers.
Many wrong labels were replaced. These labels
 P1060970.JPGP1060972.JPGP1060975.JPG 
  3831   Sun Oct 31 00:19:35 2010 ranaSummaryComputer Scripts / ProgramsHP3563A netGPIB functionI've wheeled the old HP audio frequency
signal analyzer into the control room to
debug the GPIB/python interface. The wireless
  
  3830   Sat Oct 30 14:35:43 2010 KojiSummaryCDSCDS time delay measurementUnsatisfactory.
Neglecting the digital anti-imaging
 CDS_system_investigation_090323.pdf 
  3829   Sat Oct 30 05:27:53 2010 yutaSummaryCDSCDS time delay measurementMotivation:
  We want to know the time delay
of CDS in the IOP scheme.
 delaysetup.pngCDSdelay.png 
  3828   Fri Oct 29 18:37:33 2010 yutaSummaryCDSdaqd and current CDS statusBackground:
  Before Joe left(~ 1 hour ago),
fb was working for a while. But after he
 06-25-2009.NN_24ThreatLevel.GJH2L69BK.1.jpg 
  3827   Fri Oct 29 16:43:25 2010 josephbUpdateCDSc1ioo now talking to c1susProblem:
c1ioo was not able to talk to c1sus
because of timing issues.  This prevented
  
  3826   Fri Oct 29 16:39:01 2010 JenneUpdateTreasureOld Green suspension towers disassembled[Jenne, Joonho]
At Koji's request, we disassembled
2 of the old Green suspension towers that
 P1070014.JPGP1070015.JPG 
  3825   Fri Oct 29 16:03:35 2010 kiwamuUpdatePSLwideband EOM : installed the triple resonant box 
 
 small_DSC_2654.jpg 
  3824   Fri Oct 29 14:16:26 2010 JenneUpdateSUSPRM baking[Suresh, Jenne]
We took a look-see at the PRM after
the gluing from last night.  The balance
  
  3823   Fri Oct 29 14:06:12 2010 kiwamuUpdateGreen LockingRe: 80MHz VCO for green PLL : VCO calibrationP.S. There is a document about the 80MHz
VCO box. This may be helpful. 
  
  3822   Fri Oct 29 11:29:29 2010 josephbUpdateCDSHow I broke the frame builder yesterdayProblem:
Long before Yuta came along and deleted
daqd, I had done something to prevent the
  
  3821   Fri Oct 29 11:25:15 2010 josephb, yutaSummaryCDS[EMERGENCY] accidentally deleted daqdProblem:
Missing daqd file, i.e. the framebuilder
executable.
  
  3820   Fri Oct 29 06:20:20 2010 kiwamuUpdateGreen Locking80MHz VCO for green PLL : VCO calibration I calibrated the VCO frequency
as a function of the applied input voltage.
 calibration.png 
  3819   Fri Oct 29 05:40:51 2010 kiwamuUpdatePSLwideband EOM aligned : AM decreased by 24dBAt the
PSL table I aligned the wideband EOM more
 EOMalign.png 
  3818   Fri Oct 29 04:58:04 2010 KevinUpdatePSLPBS Optimization[Koji and Kevin]
Since there was still a lot of power
being reflected from the PBS before the Faraday
  
  3817   Fri Oct 29 04:24:34 2010 KojiUpdateIOOPMC output increased: need attention[Kevin Koji]
- The PBS alignment increased
the transmitted power
  
  3816   Fri Oct 29 01:18:03 2010 KojiSummarySUSPRM standoff glued[Suresh Koji]
The standoff glued. The incandescent
lamp set for curing the epoxy.
 IMG_3674.jpg 
  3815   Thu Oct 28 23:17:15 2010 yutaSummaryCDS[EMERGENCY] accidentally deleted daqdRana showed me that if c1sus machine runs
c1mcs stuff(and c1x02 stuff) only, we can
use dataviewer without crashing fb.
  
  3814   Thu Oct 28 21:20:11 2010 yutaUpdateCDSFlaky fb, tried DAQ re-install, but no helpSummary:
  Unfortunately, fb is flakier
than normal. 
  
  3813   Thu Oct 28 20:08:26 2010 yutaUpdateGreen Lockingrevised RF amp cascadingBackground:
  Yesterday, I said I will use
ZHL-32A for amplifying beat note signal,
  
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