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  40m Log, Page 128 of 344  Not logged in ELOG logo
ID Dateup Author Type Category Subject Text Attachments
  6395   Fri Mar 9 16:00:46 2012 steveUpdateGreen Lockinglaser emergency shut down switch replaced at the south endOver-sized local laser emergency switch
was held by large C clamp at the south end.
This was replaced by a smaller one and it
  
  6396   Fri Mar 9 16:28:10 2012 Ryan FisherSummaryComputer Scripts / ProgramsAlterations to base epics install for installing aLIGO conlog:I created a page on the wiki for the new EPICS
log (conlog):
https://wiki-40m.ligo.caltech.edu/aLIGO%20EPICs%20log%20%28conlog%29
  
  6397   Fri Mar 9 20:44:24 2012 Jim LoughUpdateCDSDAQ restart with new ini fileDAQ reload/restart
was performed at about 1315 PST today. The
previous ini file was backed up as c1pem20120309.ini
  
  6398   Sat Mar 10 02:00:03 2012 keikoUpdateLSCupdate on the locking activityITMX and ITMY balance for the MICH excitation
(lockin) is adjusted again. Now it's ITMx
= -0.992, ITMy = 1 for MICH (lockin output
  
  6399   Sat Mar 10 15:29:47 2012 ZachHowToComputer Scripts / ProgramsModeMatchrFor your mode matching pleasure, I  MMrLogo.png 
  6400   Mon Mar 12 01:04:18 2012 keikoUpdateLSCRAM simulation update, RAM LSC matrix I calculated the DRMI RAM LSC
matrix with RAM and the operation point offsets.

    configuration: C1 DRMI
  
  6401   Mon Mar 12 18:57:58 2012 keikoUpdateLSCRAM simulation update, RAM LSC matrix

    

       
            
  
  6402   Mon Mar 12 22:14:56 2012 SureshUpdateRF SystemCalibration of Demod Board Efficiency. I have completed the calibration of the
demod board efficiencies.  Here is the
schematic of the set-up.
 Calibration_Schematic.pngDemod_calib.pngDemod_calib.txtDemod_calib.xlsx 
  6403   Tue Mar 13 07:04:55 2012 kiwamuUpdateLSCevolution of the sensing matrix in PRMI as a function of timeThe
punch line is -- the sensing matrix still
looks strange in the PRMI configuration.
 PRCL.pngMICH.png 
  6404   Tue Mar 13 13:28:31 2012 Ryan FisherUpdateCDSDAQ restart with new ini fileExtra note:  This was the ini file that was
edited:
/cvs/cds/rtcds/caltech/c1/chans/daq/C1PEM.ini
  
  6405   Tue Mar 13 16:40:06 2012 kiwamuUpdateLSCevolution of the sensing matrix in PRMI as a function of time: detailsHere
I describe the measurement of the sensing
matrix.
 lockins_MICH.png 
  6406   Tue Mar 13 16:56:19 2012 kiwamuUpdateLSCevolution of the sensing matrix in PRMI as a function of timeNext steps:

    Compare the obtained sensing
matrix with an Optickle model. Particularly
  
  6407   Tue Mar 13 19:14:40 2012 kiwamuUpdateLSCNoise estimatino in the REFL33Q as a MICH sensor
A feasibility study of the REFL33Q as a MICH
sensor was coarsely performed from the point
 NB_REFL33.png 
  6409   Wed Mar 14 03:34:44 2012 kiwamuUpdateSUSAdjustment of BS suspension output matrix : coupling from SIDE to POS[Rana / Kiwamu]
 We put some elements in the
 Untitled.png 
  6410   Wed Mar 14 04:03:37 2012 kiwamuUpdateIOOPZT1 and associate extra worksAs the PZT1 has not been functional, I
have been aligning the Y arm to the input
beam instead of aligning the beam to the
  
  6411   Wed Mar 14 04:19:51 2012 kiwamuUpdateLSCREFL33Q for MICH control : not good I tried the REFL33Q for controlling
MICH in the PRMI configuration (#6407)
 Untitled.png 
  6412   Wed Mar 14 05:26:39 2012 interferomter tack forceUpdateGeneraldaytime tasksThe
following tasks need to be done in the daytime
tomorrow.
  
  6413   Wed Mar 14 10:06:26 2012 steveUpdateGreen Lockingdichroic mirror quotesDichroic
mirror quotes are in the wiki.
ATF is pricy.
  
  6414   Wed Mar 14 13:16:50 2012 kiwamuUpdateLSCA correction on Noise estimatino in the REFL33QA
correction on the previous elog about the
REFL33Q noise:
  
  6415   Wed Mar 14 13:27:15 2012 ZachHowToComputer Scripts / ProgramsModeMatchrI have added to ModeMatchr the capability   
  6416   Wed Mar 14 14:09:01 2012 interferomter tack forceUpdateGeneraldaytime tasks

    
        
  
  6417   Wed Mar 14 16:33:20 2012 keikoUpdateLSCRAM simulation / RAM pollution plotIn the last post, I showed that SRCL element
in the MICH sensor (AS55I-mich) is chaned
1% due to RAM.
 Mar14pollution.pngRAMexampleplot.png 
  6418   Wed Mar 14 16:39:02 2012 SureshUpdateGeneralREFL165 signal was not reaching demod board : Fixed

    

       
            
 Test_CDS_Calibration.png 
  6419   Wed Mar 14 21:01:36 2012 keikoUpdateLSCevolution of the sensing matrix in PRMI as a function of timeThis is the simulated signals
to compare with the original post #6403
  
  6420   Wed Mar 14 23:02:09 2012 KojiUpdateLSCLocking activityKiwamu and Koji
The target is to realize DRMI or
PRMI + one arm with ALS.
  
  6421   Thu Mar 15 04:04:23 2012 KojiConfigurationLockingPRC Matching issuesKiwamu and Koji
We found that the intra-cavity mode
of the PRC is not round although it was obvious
 P3150910.jpgP3150902.jpgP3150906.jpgP3150907.jpgP3150900.jpg 
  6422   Thu Mar 15 08:48:40 2012 RyanSummaryCDSSummary of Syracuse Visit to 40m Mar 5-9 2012JIMS Channels in PEM Model
The
PEM model has been modified now to include
the JIMS(Joint Information Management System)
  
  6423   Fri Mar 16 06:17:56 2012 SureshUpdateElectronicsREFL165 calibration : measurements 
These are the measurements for estimating
the amplitude of the signal recorded in the
 IMG_0552.JPG 
  6424   Fri Mar 16 10:37:52 2012 JenneUpdateElectronicsJenne Laser

    

       
            
  
  6425   Fri Mar 16 16:01:53 2012 ranaUpdateElectronicsREFL165 calibration : measurements To characterize the RF V to counts
we need to know the state of the whitening
filter board. Was the filter on or off ?
  
  6426   Fri Mar 16 16:03:03 2012 kiwamuUpdateIOOMC alignment servo : put some offsets in the TRANS QPD signalThe
MC alignment servo wasn't great in the last
1 hour or so as it kept disturbing the MC
  
  6427   Sun Mar 18 00:29:24 2012 DenUpdatePEMsts-2I've turned off the power of the STS-2
readout box as it provides outputs with ~10
Volts DC offset! AA filter box works in the
  
  6428   Mon Mar 19 21:25:31 2012 SureshUpdateElectronicsREFL165 calibration : measurements


   
        
            
  
  6429   Tue Mar 20 09:59:01 2012 steveUpdateIOOLaser tripped offToday is janitor day. It still does not
explain why the 2W Innolight tripped off
about an hour ago. All back to normal. 
  
  6430   Tue Mar 20 16:53:48 2012 steveUpdatePEMcranes maintenance & certified inspection of 2012Fred Goodbar of Konecrane has completed
the annual certified crane inspection and
maintenance of our cranes as required in
  
  6431   Tue Mar 20 17:50:44 2012 SureshUpdateComputersBeam Scan machine fixedThere was something wrong with the Beam
Scan PC.  The  mouse and screen
were not responding and the PC was asking
  
  6432   Wed Mar 21 10:31:28 2012 steveUpdateSAFETYAC power to ETMY turned offETMY sus damping was disabled. Green locking
laser and associated electronics turned off.
Computers and power supplies turned off at
  
  6433   Wed Mar 21 11:32:47 2012 steveUpdateSAFETYAC power to ETMX turned off


   
        
            
  
  6434   Wed Mar 21 19:12:27 2012 steveUpdateComputersAC power back on both ends

    

       
            
  
  6435   Thu Mar 22 08:14:21 2012 steveUpdateGreen Lockingdichroic mirror quotes with large wedge

    

       
            
  
  6436   Thu Mar 22 16:45:06 2012 kiwamuUpdateCDSc1scx and c1scy not properly runningIt
seems that neither c1scx nor c1scy is working
properly as their ADC counts are showing
  
  6437   Thu Mar 22 17:35:59 2012 kiwamuUpdateLockingmode profiles of the POP and POX beams : not bright enoughI tried to measure the beam profiles at
the POP and POX ports as Koji mentioned in
his entry (#6421).
  
  6438   Thu Mar 22 17:41:15 2012 sureshUpdateCDSc1scx and c1scy not properly running

    

       
            
  
  6439   Thu Mar 22 23:43:56 2012 KojiUpdateCDSc1scx and c1scy not properly runningDid you guys checked if the simplant switch
is set to "REAL WORLD" mode?
  
  6440   Fri Mar 23 01:59:59 2012 kiwamuUpdateIOOREFL beam currently unavilable[Suresh / Kiwamu]
Currently
the REFL beam is bypassed by additional mirrors
  
  6441   Fri Mar 23 05:10:46 2012 SureshUpdateIOOBeam Profile measurements: Errors too large to yield good fits.[Kiwamu, Suresh]
   Today we attempted to
measure the beam profile of the REFL beam
 rawdataplot.pngPRM-to-REFL-profile.pdf 
  6442   Sun Mar 25 20:13:31 2012 ranaHowToSUSOptical Lever Servo Tuning thoughtsTo start the optical lever filter design,
I looked into the noise on ITMY. It should
be similar to the other arm cavity optics
 Untitled.png 
  6443   Mon Mar 26 12:50:24 2012 ZachUpdateelogrestarted with scriptOn the plus side, it was the first time
I've had to do it in a while..
  
  6444   Mon Mar 26 15:15:16 2012 kiwamuUpdateIOOexpected beam profile of PRM reflectionI have estimated how the mode profile
of the PRM reflection should be, as shown
in the plot blow.
 expected_edit.png 
  6445   Mon Mar 26 16:25:44 2012 kiwamuUpdateIOOexpected v.s. measured beam profile of PRM reflection[Suresh / Kiwamu]
 We did the 2nd round of
the PRM reflection mode scan on Friday.
 PRMreflection.pngDSC_4001_small.jpg 
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