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  40m Log, Page 261 of 339  Not logged in ELOG logo
ID Date Author Type Category Subject Text Attachments
  3959   Sat Nov 20 01:58:56 2010 yutaHowToCDSeditting RT models and MEDM screens(Suresh, Yuta)

If you come up with a good idea and
  
  3958   Fri Nov 19 18:20:59 2010 SureshUpdateSUSGlue dynamics!I examined
the magnet-dumbbell joints under the microscope
to see whether the glue that I applied yesterday
 Too_much_glue_1.jpgToo_much_glue_2.jpgToo_much_glue_2.jpgToo_much_glue_3.jpg 
  3957   Fri Nov 19 17:12:22 2010 yutaUpdateCDSETMX damped, but with weird TO_COIL matrixBackground:
  c1iscex machine is currently
being setup and RT model c1scx is running.
 ETMXdamping.png 
  3956   Fri Nov 19 16:13:09 2010 JenneUpdateSUSETMU05: magnets glued to optic[Jenne, Suresh]
Suresh
and I glued the intact-from-the-first-round
 StatusTable.png 
  3955   Fri Nov 19 15:51:50 2010 KojiUpdateElectronicsREFL55 CharacterizationsRF Transimpedance of 200Ohm means the residual
impedance at the resonance (R_res) of 40,
  
  3954   Fri Nov 19 12:53:50 2010 josephbUpdateCDSTestpoints on c1iscex now workingProblem:
c1iscex did not have test points
working last night.
  
  3953   Fri Nov 19 04:23:12 2010 SureshUpdateSUSCleaned and stuck magnets to dumbbellsTo clean
the glue off the magnets and dumbbells I soaked them
 7x 
  3952   Fri Nov 19 03:43:33 2010 KevinUpdateElectronicsREFL55 Characterizations[Koji, Rana, and Kevin]
I have been trying to measure the
shot noise of REFL55 by shining a light bulb
  
  3951   Thu Nov 18 23:45:18 2010 ranaConfigurationPSLPMC Refl CamValera
and Haixing and I installed a PMC REFL camera
 mc2_simulink.png 
  3950   Thu Nov 18 17:42:20 2010 Joonho LeeSummaryElectronicsCCD cables.I finished
the direct measurement of cable impedances.
Moreover,
 Upgrade_plan_(Nov18).pdf 
  3949   Thu Nov 18 16:42:29 2010 Joonho LeeConfigurationElectronicsQuad Video for PMCT, RCT, RCR fixed.The far
right monitor in the control room is now
displaying IMCR, PMCT, RCR, RCT.
  
  3948   Thu Nov 18 16:32:21 2010 yutaSummaryCDScurrent damping status for all optics c1sus handlesSummary:
   I set Q-values for each
ringdown of PRM, BS, ITMX, ITMY, MC1, MC2,
 c1susdampings.png 
  3947   Thu Nov 18 14:19:01 2010 josephbUpdateCDSSwapped c1auxex and c1auxey codesProblem:
We had not switched
the c1aux crates when we renamed the arms,
  
  3946   Thu Nov 18 14:05:06 2010 josephb, yutaUpdateCDSc1sus is alive!Problem:
We broke c1sus by moving ADC cards
around.
  
  3945   Thu Nov 18 11:06:20 2010 josephbUpdateCDSc1sus and ADCsProblem:
ADCs are timing out on c1sus when
we have more than 3.
  
  3944   Thu Nov 18 01:52:58 2010 KevinUpdateElectronicsREFL55 Transfer FunctionsI measured the optical and electrical transfer
functions for REFL55 and calculated the RF
transimpedance. To measure the optical transfer
  
  3943   Thu Nov 18 00:40:31 2010 yutaUpdateIOOPRM reflected beam reached AP table(Kiwamu, Yuta)

Summary:
  
  3942   Wed Nov 17 23:45:20 2010 JenneUpdateSUSA bad day for suspensions[Jenne, Suresh]
Today has been a downright miserable
day in the world of suspension work. Thumbs
 StatusTable.png 
  3941   Wed Nov 17 20:44:59 2010 yutaSummaryCDSno QPD channels on c1sus machine today(Joe, Suresh, Yuta)

  
  3940   Wed Nov 17 16:02:30 2010 josephbUpdateCDSModified feCodeGen.pl to fix filtMuxMatrix name generationProblem:
Sometime in the last 3 weeks, probably
when Alex brought his latest changes from
  
  3939   Wed Nov 17 15:49:53 2010 ranaUpdateDAQOle Channel NamesThe following channels should be named
as below to keep in line with their names
pre-upgrade rather than use _DAQ in the name.
  
  3938   Wed Nov 17 10:39:20 2010 josephbUpdateCDSScreen Time FixAn improved python code to apply a replacement
to all *.adl files in a directory would be:
import
  
  3937   Wed Nov 17 02:53:41 2010 yutaUpdateIOOplaced new PRM to BS table(Kiwamu, Yuta)

Background:
  
  3936   Tue Nov 16 23:36:29 2010 Suresh, JenneUpdateSUSAssembly of ETMs[Jenne,
Suresh]
 
 StatusTable.png 
  3935   Tue Nov 16 21:42:31 2010 ranaUpdateCDSScreen Time FixI learned today that the following python
code will do a find/replace to fix the TIME
string on any MEDM screen which has a whited
  
  3934   Tue Nov 16 16:00:26 2010 AidanUpdateGreen LockingPID loop but no green

    

       
            
  
  3933   Tue Nov 16 15:32:18 2010 valeraUpdateElectronicsOSEM noise at the output of the satellite box I measured the SRM OSEM (no magnets
at the moment) noise out of the satellite
box with a SRS785 spectrum analyzer. I inserted
 osemnoise.pdf 
  3932   Tue Nov 16 12:47:30 2010 AidanUpdateGreen LockingPID loop but no greenThe PID loop is ready to be run on the
green beat note but, since the tanks are
open, there is no green transmission from
 Screenshot-C1LSC_EX_GRN_SLOW.adl.png 
  3931   Tue Nov 16 10:47:45 2010 AidanUpdateGreen LockingRebooted c1psl - added new GRNBEAT_FREQ channelI restored C1:PSL-126MOPA_126MON to its
original settings (EGUF = -410, EGUL = 410)
and added a new calc channel called C1:LSC-EX_GRNBEAT_FREQ
  
  3930   Tue Nov 16 09:02:54 2010 AidanUpdateGreen LockingPID loop - calibration of SR620 output [Aidan, Kiwamu]
Kiwamu and I roughly calibrated the
analogue output from the SR620 frequency
  
  3929   Tue Nov 16 03:33:22 2010 yutaUpdateIOOaligned Faraday, beam reached SM just before PRM(Koji, Yuta)

 MCalignNov16.png 
  3928   Mon Nov 15 22:24:28 2010 SureshUpdateSUSSelection of MagnetsI have
selected a set of 16 magnets which have a
B field between 900 to 950 Gauss (5% variation)
  
  3927   Mon Nov 15 17:10:59 2010 kiwamuUpdateGreen LockingPLL with real green signal I
checked the slow servo and the PLL of 80MHz
 FCnoise.png 
  3926   Mon Nov 15 16:26:46 2010 josephbUpdateCDSc1iscex is now running and the network hasn't diedProblem:
c1iscex was spamming the network
with error messages.
  
  3925   Mon Nov 15 16:09:44 2010 JenneUpdateVACETMX, ETMY, ITMY chambers opened[Steve, Jenne, Suresh, Koji]
The remaining test mass chambers
have been opened, and have light doors in
  
  3924   Mon Nov 15 15:02:00 2010 KojiSummaryPSLpower measurements around the PMC[Valera Yuta Kiwamu Koji]
Kiwamu burtrestored c1psl.  We measured
the power levels around the PMC.
  
  3923   Mon Nov 15 15:01:51 2010 kiwamuUpdateIOOrealigned the wideband EOMSince we are going to lock the MC today,
I
aligned it back to the default place.
  
  3922   Mon Nov 15 14:42:01 2010 AidanUpdatePSLC1PSL rebooted? Yeah. Joe and I rebooted c1psl a couple
of times this morning. I didn't realize the
burtrestore wasn't automatic.
  
  3921   Mon Nov 15 14:36:37 2010 KojiUpdatePSLC1PSL rebooted? Has C1PSL rebooted? Has burtrestore been
forgotten? Even without elog?
We found some settings are wrong
  
  3920   Mon Nov 15 11:52:22 2010 kiwamuUpdateGreen LockingPLL with real green signal   PLL_with_green.png 
  3919   Mon Nov 15 11:13:12 2010 josephbUpdateCDSModified rc.local to not start mx_streams automaticallyProblem:
c1iscex floods the network with about
1 gigabyte of error messages in a few seconds,
  
  3918   Mon Nov 15 04:57:10 2010 ranaUpdateElectronicsSRM side OSEM noise with no magnetIF I believe this calibration and IF I
believe that the noise is the same with no
magnet in there, then its almost 1
  
  3917   Sun Nov 14 16:40:46 2010 JenneUpdateTreasureActivities related to OSEM measurement[Valera, Jenne]
We pondered the idea of clamping
the PRM optic to measure the OSEM noise. 
  
  3916   Sun Nov 14 16:26:31 2010 jenne, valeraUpdateElectronicsSRM side OSEM noise with no magnetWe realized that the SRM sensors are connected
to the readout but just sitting on the BS
in vacuum table with no magnets and therefore
 SRM-SD-Current-NoMagnet.pdf 
  3915   Sun Nov 14 11:56:59 2010 valeraUpdateCDSTest of ADC noise 
We missed
  
  3914   Sun Nov 14 02:59:31 2010 ranaConfigurationGeneralMEDM snapshots web pageSince Nodus is a Solaris machine it can
barely handle doing the ImageMagick commands
(such as convert and import). I removed
  
  3913   Sat Nov 13 16:57:21 2010 valeraConfigurationElectronicsPRM Side OSEM transimpedance changeNow that we have increased the range of
the AA to +/- 10 V I have increased the PRM
side OSEM transimpedance from 29 kV/A to
 PRM-SD-ADC.pdfPRM-SD-Current.pdf 
  3912   Sat Nov 13 15:53:05 2010 yutaUpdateCDSdiagonalization of MC input matrixMotivation:
  MC is aligned from the A2L
measurement, but to do the beam centering
 MCspectraNov09.pngMCspectraNov13.pngMC1spetra_wrongmatrix.png 
  3911   Fri Nov 12 20:40:51 2010 josephb, yuta, valeraConfigurationElectronicsAA voltage rangeWe changed the range of the two SUS AA
boards in the corner from +/-2 V to +/-10
V by changing the supply voltage from +/-5
  
  3910   Fri Nov 12 19:24:56 2010 KojiUpdateCDSTest of ADC noise[Koji Yuta]
We found one of the ADC cables were
left unconnected. This left the MC suspensions
  
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