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IDup Date Author Type Category Subject Text Attachments
  2776   Tue Apr 6 16:55:28 2010 AlbertoUpdateComputer Scripts / ProgramsData formats in the Agilent AG4395a Spectrum Analyzer


   
        
            
  
  2777   Tue Apr 6 22:54:34 2010 KojiUpdateSUSITMY (south) alignedKiwamu and Koji
ITMY
(south) was aligned
 IMG_2362.jpg 
  2778   Wed Apr 7 09:00:01 2010 steveHowToPEMprepare to open chamberIn order to minimize the diffusion of more
dust particles into the vented IFO vacuum
envelope
 0.5micron.jpg 
  2779   Wed Apr 7 10:48:04 2010 AlbertoUpdateElectronicsREFL11 Noise SimulationLISO simulations confirm the estimate
of ~15nV for the noise of REFL11.
The
largest contribution comes from the 50Ohm
 rfpd11_testinput_noiseplot.pdf 
  2780   Wed Apr 7 10:58:15 2010 KojiUpdateElectronicsREFL11 Noise SimulationWhat??? I don't see any gray trace
of Rs in the plot. What are you talking about?
Anyway, if you are true, the circuit
  
  2781   Wed Apr 7 11:11:19 2010 AlbertoUpdateElectronicsREFL11 Noise Simulation


   
        
            
 rfpd11_testinput_noiseplot.pdf 
  2782   Thu Apr 8 10:17:52 2010 AlbertoUpdate40m UpgradingREFL11 Noise Vs PhotocurrentFrom the measurements of the 11 MHz RFPD
at 11Mhz I estimated a transimpedance of
about 750 Ohms. (See attached plot.)
 2010_04_05_REFL11_ShotnoiseVsPhotocurrent.png 
  2783   Thu Apr 8 10:24:33 2010 AlbertoUpdate40m UpgradingREFL11 Noise Vs Photocurrent


   
        
            
  
  2784   Thu Apr 8 20:53:13 2010 KojiUpdate40m UpgradingREFL11 Noise Vs PhotocurrentSomething must be wrong. 
1. Physical Unit is wrong for the
second term of "Vn = Vdn + Sqrt(2 e
  
  2785   Fri Apr 9 06:45:28 2010 AlbertoUpdate40m UpgradingREFL11 Noise Vs Photocurrent


   
        
            
  
  2786   Sun Apr 11 13:51:04 2010 AlbertoOmnistructureComputersWhere are the laptops?I can't find the DELL laptop anywhere in
the lab. Does anyone know where it is?
Also one of the two netbooks is missing.
  
  2787   Sun Apr 11 19:05:34 2010 KojiOmnistructureComputersWhere are the laptops?One dell is in the clean room for the suspension
work.

  
  2788   Mon Apr 12 14:20:10 2010 kiwamuUpdateGreen LockingPZT response for the innolightI measured a
jitter modulation caused by
  
  2789   Mon Apr 12 16:20:05 2010 AlbertoConfiguration40m UpgradingREFL55 improvedDuring the commissioning of the AS55
PD, I learned how to get a much better rejection
of the 11MHz modulation.
So I
 2010-04-12_REFL55_TF_model_to_meas_comparison.png 
  2790   Mon Apr 12 17:09:30 2010 AlbertoUpdate40m UpgradingREFL11 Noise Vs Photocurrent


   
        
            
 2010-04-09_REFL11NoiseMeasurements.png 
  2791   Mon Apr 12 17:37:52 2010 josephbUpdateComputersY end simulated plant progressCurrently, the y end plant is yep.mdl. 
In order to compile it
 YEP.pngYEP_PLANT.png 
  2792   Mon Apr 12 17:48:32 2010 AidanUpdateComputer Scripts / Programselog restarted The elog crashed when I was uploading
a photo just now. I logged into nodus and
restarted it.
  
  2793   Mon Apr 12 19:50:30 2010 AidanSummaryGreen LockingTemperature sweep of the Lightwave: df/dT = 2.8GHz/KThe beams from the Innolight and Lightwave
NPROs were both incident on a 1GHZ New Focus
PD. Mott and I swept the temperature of the
 LightWave_temp_sweep.pdfLightWave_Temp.m 
  2794   Mon Apr 12 20:48:51 2010 Aidan, MottSummaryGreen LockingTemperature sweep of the Innolight: df/dT ~ 3.3GHz/K

    
        
 Innolight_temp_sweep.pdfInnolight_Temp.m 
  2795   Mon Apr 12 22:44:30 2010 KojiUpdate40m UpgradingREFL11 Noise Vs PhotocurrentData looks perfect ... but the fitting
was wrong.
Vn = Vdn + Z * sqrt( 2 e Idc )
  
  2796   Mon Apr 12 22:51:31 2010 KojiUpdateSUSITMX installed and alignedKoji
ITMX
was aligned
 IMG_2381.jpg 
  2797   Tue Apr 13 12:39:51 2010 Aidan, MottSummaryGreen LockingTemperature sweep of the Innolight: df/dT ~ 3.3GHz/KPlease put those numbers onto wiki somewhere
at the green page or laser characterization
page.
  
  2798   Tue Apr 13 12:49:35 2010 josephbUpdateComputersY end simulated plant progress

    
        
  
  2799   Tue Apr 13 19:53:06 2010 MottUpdateGreen LockingPZT response for the innolight and lightwave 
 I redid the PZT Phase Modulation
measurement out to 5 MHz for both the Innolight
 6x 
  2800   Tue Apr 13 20:02:02 2010 KojiUpdateSUSBS chamber opened, PRM/SRM SOS removed from the tableBob, Steve, and Koji
We
opened North heavy door of the BS chamber
 IMG_2384.jpg 
  2801   Thu Apr 15 14:47:28 2010 steveUpdateElectronics25MHZ oscillation of HP4195AThe 1979 vintage RF spectrum analyzer HP4195A 
sn2904J01587 shipped out  for repair
today to http://www.avalontest.com
 P1060246.JPGP1060249.JPG 
  2802   Fri Apr 16 17:26:23 2010 JenneUpdatePEMGuralp Breakout Box pulledI
pulled the Guralp breakout box from the rack,
and it's sitting on the EE bench here. 
  
  2803   Fri Apr 16 17:46:54 2010 KojiUpdateVACPeeting mirrors alignedSteve and Koji
We aligned the peeping mirrors to
look at the surface of the ITMs. 
  
  2804   Sat Apr 17 18:30:12 2010 ZachUpdateGreen Locking1W NPRO output profileNOTE:
This measurement is wrong and
only remains for documentation purposes.
 profile_fit_4_17_10.png 
  2805   Mon Apr 19 05:54:50 2010 ranaConfigurationPSLRC Temperature Servo Turned OFF temporarilyIn order to measure the transfer function
of the RC cavity's foam, I've turned off
the servo so that the room temperature noise
 Untitled.png 
  2806   Mon Apr 19 07:38:07 2010 ranaHowToElectronicsRepair and Calibration of SR560: s/n 59650Frank noticed that this particular SR560
had an offset on the output which was unzeroable
by the usual method of tuning the trim pot
  
  2807   Mon Apr 19 11:31:04 2010 AidanUpdateGreen Locking1W NPRO output profile

    

       
            
  
  2808   Mon Apr 19 13:23:03 2010 josephbConfigurationComputersyum update fixed on control room machinesI went to Ottavia, and tried running yum
update.  It was having dependancy issues
with mjpegtools, which was a rpmforge provided
  
  2809   Mon Apr 19 16:27:13 2010 AidanUpdateGreen LockingRaicol crystals arrived and we investigated themJenne, Koji and I opened up the package
from Raicol and examined the crystals under
the microscope. The results were mixed and
  
  2810   Mon Apr 19 16:31:42 2010 KevinUpdatePSLInnolight 2W LaserKoji and Kevin 
We unpacked the Innolight 2W laser,
took an inventory, and scanned the operations
  
  2811   Tue Apr 20 00:32:30 2010 JenneUpdatePEMGuralp Breakout Box put back


   
        
            
 Gur2X_before_20Apr2010.jpgGur2X_after_replace_100k_resistors_20Apr2010.jpg 
  2812   Tue Apr 20 07:48:42 2010 steveUpdatePSLion pump HV turned onWe found ref-cavity HV was off yesterday
afternoon. It was turned back on.
  
  2813   Tue Apr 20 08:00:52 2010 steveUpdateSUSETMY damping restoredETMY sus damping was restored   
  2814   Tue Apr 20 09:15:15 2010 steveSummarySAFETYannual safety audit   safa.PDF 
  2815   Tue Apr 20 10:55:10 2010 steveBureaucracySAFETYKevin Kuns received safety training The 40m's new undergrad Kevin Kuns was
introduced to 40m safety hazards. He is new
and needs guidance as specially with 2W laser
  
  2816   Tue Apr 20 11:14:31 2010 AidanUpdateGreen LockingRaicol crystals arrived and we investigated them 
 Here
is Crystal 724 polished side 2 with all photos
  
  2817   Tue Apr 20 13:00:52 2010 ZachUpdateelogelog restarted I restarted the elog with the restart
script as it was down.
  
  2818   Tue Apr 20 13:02:14 2010 ZachUpdateGreen Locking1W NPRO output profileEDIT:
I used an IFIT (inverse fast idiot transform)
to change the x-axis of the plot from Hz
 profile_fit_4_19_10.png 
  2819   Tue Apr 20 13:37:36 2010 JenneUpdateGreen Locking1W NPRO output profile


   
        
            
  
  2820   Tue Apr 20 18:02:22 2010 JenneUpdateCOCNew SRM and PRM Hung[Jenne, Steve]
We removed the old SRM and PRM from
their cages, and are temporarily storing
  
  2821   Tue Apr 20 19:37:02 2010 KojiUpdateGreen Locking1W NPRO output profileBeautiful fitting.

  
  2822   Tue Apr 20 20:15:37 2010 KevinUpdatePSLInnolight 2W Output Power vs Injection CurrentKoji and Kevin measured the output power
vs injection current for the Innolight 2W
laser.
 PvsI_2W.jpg 
  2823   Wed Apr 21 10:09:23 2010 kiwamuUpdateGreen Lockingwaist positon of Gaussian beam in PPKTP crystalsTheoretically the waist position of
a Gaussian beam (1064) in our PPKTP crystal
differs by ~6.7 mm from that of the incident
 focal_positin_edit.png 
  2824   Wed Apr 21 11:32:31 2010 josephbUpdateCDS40m CDS hardware update and software requestsThis is mostly a reminder to myself about
what I discussed with Jay and Alex this morning.
The big black IO chassis are "almost"
  
  2825   Wed Apr 21 15:53:57 2010 JenneUpdatePEMSeismometers now on the granite slabThe 3 seismometers are now on the granite
slab.  The Ranger is now aligned with
the Xarm (perpendicular to the Mode Cleaner)
 P4210048.JPG 
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