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IDup Date Author Type Category Subject Text Attachments
  4134   Tue Jan 11 13:32:52 2011 josephb, kiwamuUpdateCDSUpdated some DAQ channel names[Joe,
Kiwamu]
We
  
  4135   Tue Jan 11 14:05:11 2011 josephbUpdateComputersMartian host table updated dailyI created two simple cron jobs, one running
on linux1 and one running on nodus, to produce
an updated copy of the martian host table
  
  4136   Tue Jan 11 16:04:17 2011 josephbUpdateCDSScript to update web views of models for all installed front endsI wrote
a new script that is in /opt/rtcds/caltech/c1/scripts/AutoUpdate/
called  webview_simlink_update.m. 
  
  4137   Tue Jan 11 17:08:43 2011 SureshConfigurationPSLreplaced the pzt-steering mirror on PSL[Rana,
Jenne, Suresh]
Yesterday,
  
  4138   Tue Jan 11 18:41:43 2011 JenneUpdateIOOPut MC PZT offset onto MC board, instead of on awkward cart[Larisa and Jenne]
We wanted to get rid of the awkward
cart that was sitting behind the 1Y1 rack. 
 D040180-B.pdf 
  4139   Tue Jan 11 21:08:19 2011 JoonhoSummaryCamerasCCD cables upgrade plan.Today
I have made the CCD Cable Upgrade Plan for
improvement of sysmtem.
 CCD_Cable_Upgrade_Plan_Jan11_2011.pdf 
  4140   Wed Jan 12 01:38:52 2011 KojiUpdateIOOPut MC PZT offset onto MC board, instead of on awkward cartI can not think of any reason that the
input impedance of 13kOhm between the pos/neg
inputs produces such a big change at the
  
  4141   Wed Jan 12 01:39:49 2011 kiwamuUpdateLSClocked X arm[Suresh, Kiwamu]
  
  4142   Wed Jan 12 02:41:19 2011 kiwamuUpdateGeneraldaytime tasks for tomorrow[Rana, Kiwamu]
Here
is the list for the daytime tasks of tomorrow,
  
  4143   Wed Jan 12 17:22:47 2011 SureshConfigurationLockingMC demod phase adjusted to minimise the I output[Koji, Suresh]
We wanted to check and make sure
that the relative phase of the two inputs
 TEK00000.PNG 
  4144   Wed Jan 12 17:50:21 2011 josephbUpdateCDSWorked on c1lsc, MC2 screens[josephb,
osamu, kiwamu]
We
  
  4145   Wed Jan 12 22:19:54 2011 KojiUpdateIOOMC flakiness solved[Koji Suresh Kiwamu]
Suresh modified the MC board to have
+5V offset at the output. (To be reported
  
  4146   Wed Jan 12 22:33:24 2011 kiwamuUpdateCDSMC2 dewhitening are healthy except for URI briefly
checked the MC2 analog dewhitening filters.
It
  
  4147   Wed Jan 12 22:39:16 2011 SureshUpdateIOOPut MC PZT offset onto MC board, instead of on awkward cart


   
        
            
 P1120508.JPGP1120509.JPGD040180-B_with_5V_offset.pdf 
  4148   Thu Jan 13 03:00:01 2011 JenneUpdateIOOWFS shenanigansMy goal
this afternoon was to
 D990249-B-1_MCWFS_schematic.pdf 
  4149   Thu Jan 13 12:56:57 2011 ranaUpdateIOOWFS shenanigansActually, I just found out that there are
different flavors of 'YAG-444'. 
There's a YAG-444AH and also a YAG-444-4AH.
 PerkinElmerQPDs.pdf 
  4150   Thu Jan 13 14:21:13 2011 josephbUpdateCDSWebview of front end model files automatedAfter
Rana pointed me to Yoichi's MEDM snapshot
script, I learned how to use Xvfb, which
  
  4151   Thu Jan 13 16:34:02 2011 josephbUpdateComputers32 bit matlab updatedThere
was a problem with running the webview report
generator in matlab on Mafalada.  It
  
  4152   Thu Jan 13 16:41:07 2011 josephbUpdateCDSChannel names for LSC updatedI renamed most of the filter banks in the
c1lsc model.  The input filters are
now labeled based on the RF photodiode's
  
  4153   Fri Jan 14 01:55:26 2011 kiwamuUpdateLSCX arm locked with C1LSC digital control [Koji, Kiwamu]
  
  4154   Fri Jan 14 11:29:00 2011 kiwamuUpdateLSCexpected open loop TF of X arm lockingHere shows a plot of the expected open
loop transfer function (TF) for the X arm
locking.
 xarm_oltf.png 
  4155   Fri Jan 14 12:29:57 2011 KojiUpdateLockingNext steps for the greenThese are the next steps for a better operation
of the arm locking. They are suitable for
the day time activities
  
  4156   Fri Jan 14 12:34:08 2011 KojiUpdateLSCX arm locked with C1LSC digital controlMy feeling was that the saturation was
caused by the LSC whitening filter which
was always on.
  
  4157   Fri Jan 14 17:13:39 2011 josephbUpdateCamerasPylon driver for Basler Cameras installed on MegatronAfter getting some help from the Basler
technical support, I was directed to the
following ftp link:
  
  4158   Fri Jan 14 17:58:50 2011 OsamuConfigurationGeneralStandalone RT setup I'll be gone to Hanford site next
week and come back to Caltech on 24th's week.
I setup a standalone RT system at
  
  4159   Fri Jan 14 20:37:00 2011 kiwamuHowToGreen Lockingplan for this month I summarized how we proceed our green
locking in this month on the wiki.
Since step1 and 2 shown on the wiki
 green_plan.png 
  4160   Fri Jan 14 20:39:20 2011 ranaUpdateCDSUpdated some DAQ channel namesI like this activateDAQ script, but someone   
  4161   Sun Jan 16 02:20:59 2011 SureshUpdateLockingcomparing the PSL with the X-end-NPRO through the green beatObjective:
      We
wish to study the coherence of the two NPROs
 P1160510.JPGP1160511.JPGP1160515.JPGP1160516.JPG 
  4162   Mon Jan 17 04:10:10 2011 ranaConfigurationComputersNTPD restarted on c1dcuepics (to fix the MEDM screen times)I installed NTPD on Megatron (its Ubuntu,
so different from the CentOS workstations).
Here's the terminal cap to show that its
  
  4163   Mon Jan 17 15:31:50 2011 josephbUpdateCamerasTest the Basler acA640-100gm cameraThe Basler
acA640-100gm is a power over ethernet camera. 
It uses a power injector to supply power
 PylonViewer.jpg 
  4164   Mon Jan 17 20:13:38 2011 ranaUpdateElectronicsPOX_11 Optical TFI used 50 mA to drive the laser diode.
The light is split 50/50 between the DUT
(Device Under Test) and the New Focus 1611
 A.TIF 
  4165   Tue Jan 18 10:25:23 2011 steveUpdatePEMvertex crane work this weekThe crane people are here. The Vertex chambers
are covered with plastic. The PSL HEPAs will
be running on high during the day.
  
  4166   Wed Jan 19 03:37:30 2011 SureshUpdateLockingcomparing the PSL with the X-end-NPRO through the green beat 
 
 [Kiwamu, Suresh]
 Phase_noise_in_digital_frequency_dividers.pdf 
  4167   Wed Jan 19 04:25:54 2011 KevinUpdateElectronicsPOX Transfer FunctionsI redid the optical POX transfer functions
and updated the wiki at http://lhocds.ligo-wa.caltech.edu:8000/40m/Electronics/POX.
I measured each transfer function
  
  4168   Wed Jan 19 10:31:24 2011 josephbUpdateelogElog restarted againElog wasn't
responding at around 10 am this morning. 
I killed the elogd process, then used the
  
  4169   Wed Jan 19 10:45:00 2011 KojiUpdateElectronicsPOX Transfer FunctionsTF looks fine except for the large peak
at around 200MHz which has been reported
by Rana. The time series and the spectrum
  
  4170   Wed Jan 19 17:00:23 2011 KevinUpdateElectronicsPOX Transfer Functions The value of I_dc was a mistake.
The value should be 240 µA.
The widths of the resonance peaks
  
  4171   Thu Jan 20 00:39:22 2011 kiwamuHowToCDSDAQ setup : another trickHere
is another trick for the DAQ setup when you
add a DAQ channel associated with a new front
  
  4172   Thu Jan 20 01:50:30 2011 KevinUpdateElectronicsPOX Transfer Functions[Koji, Kevin]
We fit the entire POX optical transfer
function from 1 MHz to 500 MHz in LISO. The
  
  4173   Thu Jan 20 04:03:02 2011 kiwamuUpdateCDSc1scy error I found
that c1scy was not running due to a daq initialization
  
  4174   Thu Jan 20 04:43:28 2011 kiwamuUpdateGreen Lockingstatus update: PLL connected to ADC I
connected the PLL signal to the ADC on c1ioo. 
  
  4175   Thu Jan 20 10:15:50 2011 josephbUpdateCDSc1scy errorThis is
caused by an insufficient number of active
DAQ channels in the C1SCY.ini file located
  
  4176   Thu Jan 20 15:15:39 2011 kiwamuUpdateGreen Lockingstatus update: PLL connected to ADCI
realized that the black AA board I mentioned
  
  4177   Thu Jan 20 15:39:59 2011 AidanUpdateLockingUpper limit on frequency noise of ADC[Aidan, Kiwamu]
Kiwamu and I plugged the output from
a DS3456 function generator into the ADC
 Sine-wave-width-test_of_ADC.pdf 
  4178   Thu Jan 20 17:00:39 2011 AidanConfigurationLockingBallpark figures for Green Locking PLLs (Digital vs Analogue)If we use a digital PLL for locking the
frequency of the PSL and END green lasers
then we can expect a UGF of around 1kHz (assuming
  
  4179   Thu Jan 20 18:20:55 2011 josephbUpdateCDSc1iscex computer and c1sus computer swappedSince
the 1U sized computers don't have enough
slots to hold the host interface board, RFM
  
  4180   Thu Jan 20 22:17:12 2011 ranaSummaryLSCFPMI Displacement NoiseI found this old plot in an old elog entry
of Osamu's (original
link).
 osamu-1140657006.pdf 
  4181   Fri Jan 21 02:45:43 2011 kiwamuUpdateGreen Lockinginterface for PLL to ADC  [Suresh, Kiwamu]
  
  
  4182   Fri Jan 21 11:45:01 2011 AidanConfigurationLockingBallpark figures for Green Locking PLLs (Digital vs Analogue)

    

       
            
  
  4183   Fri Jan 21 15:26:15 2011 josephbUpdateCDSc1sus broken yesterday and now fixed[Joe,
Koji]
Yesterday's CDS swap of c1sus and
  
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