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ID Date Author Typeup Category Subject Text Attachments
  4364   Mon Feb 28 11:22:40 2011 josephbSummaryGeneralto do list

   
        
            
  
  4371   Wed Mar 2 22:57:57 2011 sureshSummaryGeneralStuff from LLOHere is a partial list of stuff which is
being packed at LLO to be shipped to CIT. 
The electronics ckt boards are yet to be
 eLIGO_items_from_LLO_for_Caltech.xls 
  4375   Thu Mar 3 20:30:03 2011 ranaSummaryPSLPMC Sweeps @ different input power levels to measure the FinesseIts been well
noted in the past that sweeping the PMC
at high power leads to a distortion of the
  
  4381   Mon Mar 7 17:58:14 2011 sureshSummaryGeneralStuff from LLO
Here is the updated list. These lists were
used as packing lists and therefore are organised
 eLIGO_items_from_LLO_for_Caltech_Sheet1.pdf 
  4382   Mon Mar 7 18:20:01 2011 kiwamuSummaryGreen Lockingplans
This
week's goal is to investigate the source
of the differential noise and to lower it.
  
  4387   Tue Mar 8 15:33:09 2011 kiwamuSummaryGreen Lockingplan on Mar.8th
  
  4391   Wed Mar 9 17:29:11 2011 steveSummaryVACsingle O-ring protectionWe have one single O-ring on the 40m vacuum
envelope. It is on the OOC west side, facing
the AP table. This O-ring has to be protected
 so1.jpgP1070458.JPG 
  4394   Thu Mar 10 01:28:47 2011 joe, jamie, rana, chrisSummaryCDSSimSuspension !Today was a banner day for  40mETMY.pngdvsim.pngredpill_bluepill.jpg 
  4412   Fri Mar 18 14:18:00 2011 kiwamuSummaryGeneralnew laser pointersJust for a record. We got 4 new laser
pointers (2 greens, 1 blue, and 1 green and
 DSC_2883_ss.jpg 
  4419   Mon Mar 21 16:49:11 2011 kiwamuSummaryGreen Lockingplan for this week- Plan for this
week
  
  4421   Tue Mar 22 00:01:25 2011 kiwamuSummaryGreen Lockingplan for daytime tasksSome
tasks for the daytime tomorrow.
  * Beam profile measurements
  
  4433   Wed Mar 23 14:19:35 2011 KojiSummaryGeneralGrand PlanThis is the grand plan we talked about
in the beginning of the meeting.

    (Kiwamu) X-end Green cleaning
  
  4435   Wed Mar 23 19:16:17 2011 AidanSummaryGreen LockingY-END green equipment is all availableWith the exception of a 2" mirror
mount, I've confirmed that we have everything
for the Y-end green production and mode-matching.
 three-quarter_inch_pedestal.jpg 
  4436   Thu Mar 24 01:16:19 2011 SureshSummaryGreen LockingY-END green equipment is all availableThere was a 2" mirror mount among the spares
on the PSL table.  It has a window LW-3-2050
UV mounted in it.  I
  
  4471   Wed Mar 30 21:43:31 2011 Aidan, KiwamuSummaryGreen LockingCalculation of the green contrast on the RF PDSkip to final thought ...
Kiwamu and I have set about measuring
the contrast of the signal on the RF PD.
  
  4479   Thu Mar 31 20:37:10 2011 AidanSummaryGreen LockingRF amplitude source I gutted one of the $2 red laser
pointers to build a laser source whose amplitude
we could modulate at RF frequencies. Basically,
 P1000543.jpgP1000544.jpgP1000545.jpg 
  4480   Thu Mar 31 20:46:11 2011 AidanSummaryGreen LockingGreen beat note PD DC responseI measured the DC response of the Green
PD
  
  4483   Fri Apr 1 23:49:24 2011 kiwamuSummaryGreen Lockingtwo states in green beat-noteAccording
to the measurement done by Aidan and me,
there are two beat-note state.
  
  4487   Tue Apr 5 17:04:36 2011 steveSummarySAFETYcranes inspected and load testedMike Caton of Konecranes inspected and
loadtested all 3  of the 40m cranes
at max reach trolley positions with 1 ton.
 P1070522.JPGP1070532.JPG 
  4488   Tue Apr 5 17:31:59 2011 steveSummaryGeneralnew laser pointers

    

       
            
 P1070530.JPG 
  4489   Tue Apr 5 19:54:39 2011 KojiSummaryGreen LockingHamamatsu S3399 testSince last Friday I have been testing the
broadband RF photodetector in order to
figure out the capability of S3399 with the
 S3399_test_110405.pngS3399_test_110405.pdf 
  4490   Tue Apr 5 21:20:11 2011 KojiSummaryGreen LockingX-arm cavity locked with LB1005 servo boxLast Thursday, I tested Newport
Servo Controller LB1005 with the X_arm
green PDH servo.
 servo.pngOLTF.pdf 
  4494   Wed Apr 6 19:36:32 2011 AidanSummaryGreen Locking(In)sanity check of Green PD - some inconsistenciesI moved the Hartmut Green PD to the Jenne
laser bench to try to determine if the response
at RF was reasonable or somehow very much
 PD_measurement.pngplot_PD_RF_ratios.pdf 
  4497   Thu Apr 7 11:51:13 2011 steveSummarySAFETYnew crane operator inaugurated

    

       
            
 P1070535.JPG 
  4500   Thu Apr 7 16:09:17 2011 AidanSummaryGreen Locking(In)sanity check of Green PD - some inconsistenciesI think I had underestimated the responsivity
of the Silicon PD at 1064nm. The previous
value was based on a rough search online
  
  4501   Thu Apr 7 19:28:02 2011 KojiSummaryGreen Locking(In)sanity check of Green PD - some inconsistenciesResponsivity of SGD-444A


 SGD-444A.png 
  4502   Thu Apr 7 21:58:57 2011 AidanSummaryGreen LockingBeat note amplitudeHaving convinced myself that the green
Hartmut PD is giving an acceptable response
at RF frequencies I decided to double-check
  
  4504   Fri Apr 8 19:43:03 2011 kiwamuSummaryIOORF combiner eases impedance mismatchingAn RF combiner should  modulationBox.png 
  4505   Fri Apr 8 20:43:46 2011 kiwamuSummaryIOORF combiner + resonant box : impedance and reflection coefficient The
input impedance of the resonant box was measured
when an RF combiner was attached to the box.
 imp_refl.png 
  4517   Tue Apr 12 18:15:07 2011 kiwamuSummaryIOORF combiner is more like attenuator 
I realized
 reflection_test.png 
  4538   Mon Apr 18 13:05:57 2011 kiwamuSummaryLSCdemod board modificationHere
is the idea how we upgrade the demodulation
boards. 
 demod_board.png 
  4549   Wed Apr 20 23:20:49 2011 jamieSummaryComputersinstallation of CDS tools on pianosaThis is an overview of how I got (almost)
all the CDS tools running on pianosa, the
new Ubuntu 10.04 control room work station.
  
  4575   Wed Apr 27 20:14:16 2011 AidanSummaryelogRestarted with script ...    
  4585   Fri Apr 29 03:39:49 2011 KojiSummaryLSCCavity lengthsI tried the idea that the PRC can resonate
f1 and f2 at the same time if the arm gives
the reflection phase to f1 and f2 with the
  
  4619   Tue May 3 18:25:38 2011 kiwamuSummaryLSCPRMI locking : plan[Rana/Jamie/Kiwamu]
 Since we've got the PRMI locked
we now should be able to do more qualitative
  
  4629   Wed May 4 15:56:09 2011 valeraSummaryGeneralPSL and MC trendsThe attached plot shows 2 day trends of
the PMC and MC reflected and transmitted
power, the PSL POS/ANG QPD signals, and the
 pslmcdrift.pdf 
  4632   Thu May 5 04:38:20 2011 KojiSummaryLSCComparison between S3399 and FFD-100Comparison between Hamamatsu S3399 and
Perkin Elmer FFD-100
These are the candidates for the
 PD_response.pdf 
  4647   Thu May 5 18:38:01 2011 ranaSummaryCDSSub-system TRAMP adjustmentsI think
that the gain ramping time (_TRAMP) should
  
  4649   Fri May 6 01:27:12 2011 KojiSummaryGeneralaLIGO BBPD / Green PD investigationMinicircuits
ERA-5SM was used for the RF
amp of the BBPD. This amp is promising
 PD_response.pdfFFD-100_AP389_MCL.pdf 
  4651   Fri May 6 10:20:00 2011 steveSummarySAFETY2011 safety auditThe emphasis of this annual safety audit 
was on  safe  electrical housekeeping
on March 3, 2011
 sa2011done1.pdfP1070448.JPG 
  4658   Sat May 7 12:57:54 2011 KojiSummaryGeneralaLIGO BBPD / Green PD investigationThe RF amplifier of the prototype BBPD
has been replaced from ERA-5SM to MAR-6SM.
 PD_response.pdf 
  4771   Tue May 31 11:34:13 2011 steveSummarySAFETYsafety glasses checked  1064 nm transmison were measured
of 40m safety glasses as shown . Their performance
did not degrade. They are as good as their
 P1070823.JPG 
  4779   Thu Jun 2 10:19:37 2011 Alex IvanovSummaryDAQinstalled new daqd (frame builder) program on fb (target/fb/daqd)I hope that new daqd code will fix the
problem with non-aligned at 16 seconds frame
file GPS times.
  
  4821   Wed Jun 15 01:30:38 2011 JamieSummaryLSCSchnupp asymmetry measurementMeasurement of Schnupp asymmetry
This
was done by measuring the relative phase
between the sidebands reflected from the
 schnupp.pngarm_phase.pyplot.pyschnupp_ETMX.pikschnupp_ETMY.pik 
  4835   Mon Jun 20 00:59:02 2011 kiwamuSummaryGeneralWeekly reportThis
is a summary for the week ending June 19th.
Feel
  
  4853   Wed Jun 22 12:24:44 2011 NicoleSummarySUSMidweek 2 Work SummaryI
have made my transfer function model
 P6220200.JPG 
  4854   Wed Jun 22 12:29:57 2011 IshwitaSummaryAdaptive FilteringWeekly summaryI started on the 16th with a very intense
lab tour & was fed with a large amount
of data (I can't guarantee that I remember
  
  4858   Wed Jun 22 18:41:23 2011 NicoleSummarySUSBROKEN bread board circuit box and L9337 LED Current Versus Voltage CurveNOTE: The potentiometers on the  LED_I_vs_V_exp_plot.png 
  4859   Wed Jun 22 18:50:45 2011 JamieSummaryGeneralJuly 2011 vent planKiwamu and I have started to put together
a vent plan on the 40m wiki:
http://blue.ligo-wa.caltech.edu:8000/40m/vent/201107
  
  4861   Wed Jun 22 21:36:41 2011 ranaSummaryGeneralJuly 2011 vent planI
put a paper Peet's bag with half of the Mini-Moos
into George. 
  
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