40m QIL Cryo_Lab CTN SUS_Lab TCS_Lab OMC_Lab CRIME_Lab FEA ENG_Labs OptContFac Mariner WBEEShop
  40m Log, Page 259 of 344  Not logged in ELOG logo
IDdown Date Author Type Category Subject Text Attachments
  4300   Tue Feb 15 11:56:17 2011 josephbUpdateCDSUpdated some DAQ channel namesThat is my fault for not running the activateDAQ.py
script after a round of rebuilds.  I have
run the script this morning, and confirmed
  
  4299   Tue Feb 15 11:53:02 2011 kiwamuSummaryGeneraltoday's missionsI
think this week is going to be an "alignment
week".
  
  4298   Tue Feb 15 11:43:53 2011 JenneUpdateComputersOccasional error with NDS2Just in case anyone has encountered this
/ knows how to fix it....
I'm running NDS2 on Rossa, trying
  
  4297   Tue Feb 15 06:59:57 2011 Suresh, JenneOmnistructureGeneralX end enclosure left open[Jenne, Suresh]
 Jenne found the X-end table
enclosure had been left open.  She replaced
  
  4296   Tue Feb 15 06:15:07 2011 SureshUpdateASCno signal from IP_ANG_Seg1[Valery, kiwamu, Jenne, Suresh]
    I first interchanged
the two QPD's on the Y end table to see if
 Y-end_beam.JPG 
  4295   Tue Feb 15 03:10:37 2011 kiwamuUpdateASCIR beam alignment for Xarm : TRX reductionI tried aligning the IR beam axis for
the X arm to have good beam centering on
ITMX and ETMX.
  
  4294   Tue Feb 15 02:13:16 2011 kiwamuSummaryASCa daytime task : small signals on ETMX OLRana
and I found that the QPD for the optical
lever at X end are showing small signals.
  
  4293   Mon Feb 14 23:29:04 2011 ranaSummarySUSETMX Fitlers moved aroundAll of the SUS used to have only 1 filter
module for SIDE. They now have 3 filter modules
for SIDE just like the other DOFs.
  
  4292   Mon Feb 14 21:59:35 2011 ranaUpdateCDSUpdated some DAQ channel namesAlthough Joe and Kiwamu claim
that they have inserted the correct DAQ names
for the OPLEVs (e.g. PERROR and YERROR) back
  
  4291   Mon Feb 14 18:27:39 2011 josephbUpdateCDSBegan updating to latest CDS svn, reverted to previous state[Joe, Alex]
This morning I began the process
of bringing our copy of the CDS code up to
  
  4290   Mon Feb 14 17:16:47 2011 steveUpdateGeneralracks, breakers labeledThe south arm labels were changed from
y to x to reflect reality.
So racks, manual disconnects and
  
  4289   Mon Feb 14 15:59:49 2011 JenneUpdateIOOWFS quantum efficiency as a function of angle[Larisa and Jenne]
A few weeks ago (on the 28th of January)
I had tried to measure the quantum efficiency
  
  4287   Mon Feb 14 12:37:23 2011 kiwamuUpdateASCno signal from IP_ANG_Seg1It turns out there are no reasonable
signal from the segment 1 on the IP_ANG QPD.
  
  4286   Mon Feb 14 11:23:24 2011 steveUpdateSAFETYenclosure door upgradeThe #3 enclosure door was removed for the
carpenter shop this morning. They will make
5 full size doors with window on each.
 P1070418.JPG 
  4285   Mon Feb 14 07:58:43 2011 SureshUpdateCDSToday's CDS problems 
  I am concentrating on the
RF system just now and will be attending
  
  4284   Mon Feb 14 07:37:13 2011 SureshUpdateElectronicsRF Generation Box: capacitors across power lines 
There were several parts in this
box which did not have shunting capacitors
  
  4283   Mon Feb 14 01:40:14 2011 KojiOmnistructureCDSName of the green related channelsI propose to use C1:ALS-xxx_xxx for the
names of the green related channels, instead
of GCV, GCX, GCY, GFD...
  
  4282   Mon Feb 14 01:19:18 2011 ranaUpdateCDSToday's CDS problemsThis is just a listing of  CDS problems
I still notice today:

    
    MC2-MCL
  
  4281   Mon Feb 14 00:39:21 2011 rana, sureshUpdateElectronicsVCO Frequency Noise Measurement with the MFDWe hooked up the VCO Driver output to the
MFD. We adjusted the levels with attenuators
to match up to the Level 7 mixer that's being
  
  4280   Sun Feb 13 16:50:17 2011 kiwamuUpdateASCIP_ANG was at wrong ADCI found that  xmen.jpg 
  4279   Sun Feb 13 16:20:53 2011 SureshUpdateElectronicsREFL11 Photodiode replacedIt is 0.375 mW as in the calculation. 
The total diode output is just 1mW and it
is divided with a 50/50 beam splitter... 
  
  4278   Sun Feb 13 15:02:23 2011 kiwamuUpdateGreen LockingX arm beam offcentering has been measuredThe amounts
of the X arm's beam off-centering have been
 misposition.png 
  4277   Sun Feb 13 02:33:37 2011 KojiUpdateElectronicsREFL11 Photodiode replacedSuresh is saying 375mW and 0.375mW. Let's
wait for his update of the actual power.
Also he is not using EPICS, there
  
  4276   Sat Feb 12 23:22:21 2011 ranaUpdateElectronicsREFL11 Photodiode replaced375 mW is way too much light. We must never
put more than 100 mW on any of these diodes.
We don't want to blow up more diodes like
  
  4275   Sat Feb 12 08:08:05 2011 SureshUpdateElectronicsREFL11 Photodiode replacedA new photodiode ( Perkin and Elmer Model
no. C30642GH Sl No.1526) has been installed
in the place of the old photodiode. 
 C30642_datasheet-1.pdf40mUpgradeREFL11schematic.pdfP2120572.JPGP2120565.JPGP2120571.JPG 
  4274   Fri Feb 11 16:43:09 2011 steveUpdateVIDEOMC1 & 3 video monitorI set up video monitoring of MC1 and MC3  P1070415.JPG 
  4273   Fri Feb 11 09:27:03 2011 steveConfigurationVACRGA scanThe RGA scan is normal at day 52 of this
pump down.
Light power BS 1064nm ~25mW, ETMX
 rgascan20110211.jpgpressurepd70.jpg 
  4272   Fri Feb 11 00:20:58 2011 SureshUpdateElectronicsREFL11: Photodiode requires replacement 
This is with reference to Kevin and
Jenne's elogs  # 3890,
 REFL11_10Feb2011.jpg 
  4271   Thu Feb 10 14:52:36 2011 AidanHowToComputersAdding filenames in MATLAB plotsThe following code is incredibly useful
when creating  MATLAB plots as it adds
the filename of the script to the plot itself.
  
  4270   Thu Feb 10 14:07:18 2011 josephbUpdateCDSUpdating dolphin drivers to eliminate timeouts when one dolphin card is shutdown[Joe,Alex]

Alex
  
  4269   Thu Feb 10 11:16:31 2011 steveUpdatePEMsouth arm AC turned onThe air condition was off for the south
arm. I  turned it on.
  
  4268   Thu Feb 10 05:06:35 2011 kiwamuUpdateGreen Lockingbeat noise : a little bit better, and 1Hz peak from amplitude noise coupling I
repeated the same measurement as that Koji
 Screen_shot_2011-02-10_at_4.01.43.pngScreen_shot_2011-02-10_at_4.52.13.png 
  4267   Thu Feb 10 00:23:25 2011 JenneUpdateGreen LockingGreen TRX DC PD installed on PSLUsing a stray beam that is generated as
the transmitted green beam from the Xarm
goes through the viewport to the PSL table,
  
  4266   Wed Feb 9 23:48:12 2011 SureshConfigurationCamerasVideo Cable work: New Labels[Larisa, Aidan,Steve,Suresh]
   Today was the first
session for implementing the new video cabling
  
  4265   Wed Feb 9 15:26:22 2011 josephbUpdateCDSUpdated c1scx with lockin, c1gcv for green transmission pdUpdated
the c1scx model to have two Lockin demodulators
(C1:SUS-ETMX_LOCKIN1 and C1:SUS-ETMX_LOCKIN2). 
  
  4264   Wed Feb 9 10:25:46 2011 steveUpdateSAFETYAP tableI blocked the  AP table's south west
10" ID port since it is obsolete with
the new layout.
 P1070395.JPG 
  4263   Tue Feb 8 16:44:43 2011 JenneUpdateComputersLIGO Grid Cluster client upgraded on RossaI did a yum-install of the latest ldg-client
(to get onto the LIGO Clusters) on Rossa. 
I followed the instructions on the
  
  4262   Tue Feb 8 16:04:58 2011 josephbUpdateCDSHard coded decimation filters need to be fixed[Joe, Rana]
Filter definitions for the decimation
filters to epics readback channels (like
  
  4261   Tue Feb 8 15:22:13 2011 kiwamuUpdateGreen Lockingnew electronics rack at X end Yesterday
I moved the whole green electronics stuff,
which had been sitting on the floor at the
 DSC_2861_ss.png 
  4260   Tue Feb 8 13:26:11 2011 AidanSummaryGreen LockingTemperature dependence of phase change of green on reflection I did a quick back of the envelope
calculation of the expected green phase change
on reflection from the aLIGO ITM.
  
  4259   Tue Feb 8 10:23:02 2011 AidanSummaryGreen LockingDigital Frequency Discriminator - reference 
Here's the reference for the self-reference
frequency detection idea. See Figure 2.
  
  4258   Mon Feb 7 21:23:11 2011 ranaConfigurationPSLPSL FSS Temperature Sensor Interface box removedI noticed that the RMTEMP channel was spiking
myteriously when Kiwamu opened the PSL door.
We found out that the LEMO connectors would
 P2070555-1.JPG 
  4257   Mon Feb 7 19:21:32 2011 Beard PapaMetaphysicsPhotosThe Adventures of Dr Stochino and Beard Papa    
  4256   Mon Feb 7 10:37:28 2011 josephbUpdateComputersTemporarily removed cronjob for rsync.backupThe backup appears to have finished on
nodus, and I've put the rsync job back in
the crontab.
  
  4255   Sun Feb 6 02:29:28 2011 ranaUpdateElectronicsAnalog MFD: longer cableI swapped over to a 3x longer cable (old
65 ft. Pasternak cable from ancient 40m days).
The old one was 6m, the new one is 18.2 m.
 mfd18.png 
  4254   Sat Feb 5 23:03:04 2011 rana, kojiSummaryElectronicsAnalog Frequency Discriminator: splitter + mixer + long cableThis diagram shows the setup  mixer.pdfUntitled.pngfsm.png 
  4253   Fri Feb 4 23:39:56 2011 rana, kojiUpdateLSCmixer based FD set up for noise testWe set up the mixer based FD to check
out its noise performance.
It is being acquired as C1:GCV-XARM_FINE_OUT_DAQ.
  
  4252   Fri Feb 4 18:58:19 2011 ranaUpdateComputersTemporarily removed cronjob for rsync.backup

    
        
  
  4251   Fri Feb 4 15:03:20 2011 josephbUpdateComputersModified cshrc.40mRemoved
some lines from the PATH environment variable
since they point to old codes which no longer
  
  4250   Fri Feb 4 13:45:25 2011 josephbUpdateComputersTemporarily removed cronjob for rsync.backup<p>I removed the rsync backup from nodus'
crontab temporarily so as to not have multiple
backup jobs running.  The job I started
  
ELOG V3.1.3-