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ID Date Authordown Type Category Subject Text Attachments
  2783   Thu Apr 8 10:24:33 2010 AlbertoUpdate40m UpgradingREFL11 Noise Vs Photocurrent


   
        
            
  
  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.
  
  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 
  2834   Thu Apr 22 21:42:24 2010 AlbertoUpdatePSLInnolight 2W Vertical Beam Profile 
 What kind of fit did you use?
How are the uncertainties in the parameters
  
  2856   Wed Apr 28 14:15:58 2010 AlbertoUpdateIOOMC alignment 
 That's interesting.
Would it be possible to write about
  
  2874   Mon May 3 19:21:43 2010 AlbertoDAQEnvironmentBoot fest[Alberto, Koji, Rana]
The RFM network failed today. We
had to reboot the frame builder anf restart
  
  2882   Wed May 5 16:32:39 2010 AlbertoUpdate40m UpgradingNew REFL55 PD, 11MHz rejectionHere's the (calibrated) transimpedance
of the new REFL55 PD.
T(55.3) / T_(11.06) = 93 dB
 2010-05-05_REFL55_CalibratedOpticalResponse0-60MHz.png 
  2886   Thu May 6 16:18:37 2010 AlbertoUpdate40m UpgradingNew improved design for the 11MHz photodiodeAfter munching analytical models, simulations,
measurements of photodiodes I think I got
a better grasp of what we want from them,
 pox11.pdf 
  2893   Thu May 6 19:57:26 2010 AlbertoUpdate40m UpgradingNew improved design for the 11MHz photodiode


   
        
            
 pox11.pdf 
  2896   Fri May 7 18:18:02 2010 AlbertoUpdate40m UpgradingNew improved design for the 11MHz photodiode


   
        
            
  
  2902   Mon May 10 16:59:35 2010 AlbertoUpdate40m UpgradingUnexpected oscilaltionin the POY11 PDThe measured transimpedance of the latest
POY11 PD matches my model very well up to
100 MHz. But at about ~216MHz I have a resonance
 2010-05-10_POY11_CalibratedOpticalResponse0-500MHz.pngPOX11.png 
  2906   Mon May 10 19:29:33 2010 AlbertoHowToElectronicsNew Focus 1811 PD calibrated against New Focus 1611 PDI measured the output impedance of the
New Focus 1611 PD (the 1GHz one) and it is
50 Ohm for both the DC and the AC output.
  
  2924   Wed May 12 17:10:16 2010 AlbertoUpdate40m UpgradingRF frequency generation box - step 0I started putting together the components
that are coint to go inside the frequency
generation box. Here's how it looked like:
 DSC_1499_small.JPG 
  2925   Wed May 12 23:31:17 2010 AlbertoUpdate40m Upgrading216 MHz resonance in the POY11 PD killedIt turned out that the resonance at 216
MHz in the 11MHz PD that I showed in the
elog entry 2902
 POX11.png2010-05-12_POY11_CalibratedOpticalResponse0-500MHz.png 
  2966   Fri May 21 11:56:34 2010 AlbertoUpdate40m Upgrading40mUpgrade Field Power and RF Power Spectrum at the ports. 38m/38.55m arm length issue.I update my old 40mUpgrade Optickle model,
by adding the latest updates in the optical
layout (mirror distances, main optics transmissivities,
 7x 
  2969   Fri May 21 16:27:45 2010 AlbertoOmnistructureEnvironmentThe control room is molding...... not just because we haven't locked
the interferometer for quite some time. I
mean, it literally stinks. The chiller's
  
  2994   Wed May 26 17:10:09 2010 AlbertoUpdate40m UpgradingRF Generation boxThis is how the RF generation box might
soon look like:
 Visio-frequencyGenerationBox_wiringSchematic.png 
  2996   Wed May 26 22:22:03 2010 AlbertoConfiguration40m UpgradingArm cavity lengthThe second sideband is resonant in the
arms for a cavity length of 37.9299m.
The nearest antiresonant arm lengths
 reflRFpowerVsArmLength_3658m.pngreflRFpowerVsArmLength_3750m.png 
  3001   Thu May 27 12:52:02 2010 AlbertoUpdate40m UpgradingArm lengths
For both sidebands to be antiresonant
in the arms, the first modulation frequency
  
  3004   Fri May 28 07:13:05 2010 AlbertoFrogsGreen LockingSR785 found abandoned next to the workbenchesA poor lonely SR785 was found this morning
roaming around in the lab in evident violation
of  the fundamental rule which requires all
  
  3012   Fri May 28 21:32:32 2010 AlbertoUpdate40m UpgradingMC alignment[Alberto, Kiwamu, Kevin, Rana]
Today we tried to measured the beam
shape after the MC MMT1 that Jenne installed
  
  3015   Sun May 30 15:33:21 2010 AlbertoConfigurationIOOmode cleaner and air conditioningThe mode cleaner is locked and the air
conditioning is full on. So the the air conditioning
doesn't seem to be so important for the lock
  
  3016   Sun May 30 15:36:22 2010 AlbertoConfigurationPSLIMC periscope shutterTwo days ago I opened the PSL shutter by
switching the switch on the shutter driver.
That caused the shutter's switch on the medm
  
  3026   Tue Jun 1 16:29:51 2010 AlbertoUpdateIOOMC transmitted beam aligned to the Faraday; next things to doWe moved the MC-trans pick-off mirror (=
the beam splitter between the input of the
Faraday and the steering mirror located right
  
  3053   Mon Jun 7 07:39:38 2010 AlbertoOmnistructureElectronicsCapacitor Bridge Test


   
        
            
  
  3062   Thu Jun 10 07:53:14 2010 AlbertoUpdatePEMLaTeXlabs


   
        
            
  
  3064   Thu Jun 10 11:10:21 2010 AlbertoUpdateGeneralLaTeXlabs


   
        
            
  
  3072   Sat Jun 12 19:41:04 2010 AlbertoUpdateLocking40m Upgrade Optickle ModelI wrote down the settings according to
which I tuned the optickle model of the 40m
Upgrade.
 optickleIFOworkingpoint.pdf 
  3073   Sat Jun 12 19:43:19 2010 AlbertoUpdateWIKI-40M UpdateIFO modeling Wiki Page updatedToday I started writing the IFO modeling
wiki page.
The idea is to make it a reference
  
  3083   Wed Jun 16 18:44:07 2010 AlbertoConfigurationComputers40MARS


   
        
            
  
  3084   Thu Jun 17 17:09:44 2010 AlbertoUpdateLSCShort Cavity Length AdjustmentsI calculated the phase shifts that the
sidebands would pick up in the arms in the
case we changed the arm length to 38.4m as
  
  3087   Fri Jun 18 15:07:26 2010 AlbertoUpdateLSCShort Cavity Length Adjustments


   
        
            
  
  3089   Fri Jun 18 22:12:29 2010 AlbertoUpdateIOOMode Profile after Mode Matching Telescope (Round 2)GJ   
  3170   Wed Jul 7 17:18:57 2010 AlbertoConfigurationElectronicsStochmon and LSC AM Stabilizer DecomissionedToday I disconnected and removed the
Stochmon box from the 1Y2 rack.
I
also removed the amplifiers that were sitting
  
  3227   Thu Jul 15 12:21:08 2010 AlbertoConfigurationLSCPRC and SRC length adjustementsLately I've been trying to calculate the
corrections to the recycling cavity lengths
that would compensate for the phase that
 8x 
  3229   Thu Jul 15 16:16:51 2010 AlbertoConfigurationLSCPRC and SRC length adjustements


   
        
            
  
  3239   Fri Jul 16 16:12:31 2010 AlbertoConfigurationComputersc1susvme1/2 rebootedToday I noticed that the FE SYNC counters
of c1susvme1/2 on the RFM network screen
were stuck at 16384. I tried to reboot the
  
  3265   Thu Jul 22 07:19:56 2010 AlbertoUpdateTreasureMonsters, LNVR, and Phase noise


   
        
            
  
  3269   Thu Jul 22 15:59:29 2010 AlbertoUpdatePSLPSL front end machine


   
        
            
  
  3270   Thu Jul 22 18:18:54 2010 AlbertoUpdatePSLProblem Solved


   
        
            
  
  3285   Sat Jul 24 14:03:19 2010 AlbertoUpdateElectronicsFSS Oscilaltor Phase Noise Measurement[Rana, Alberto]
Today we measured the phase noise
of the oscillator used for the FSS.
 FSScrystalPhaseNoiseHigherGain.pdf 
  3287   Sun Jul 25 18:47:23 2010 AlbertoUpdateSVNOptickle 40mUpgrade model updated to include short cavity length correctionsI uploaded an updated optickle model of
the upgrade to the SVN directory with the
optickle models (here).
  
  3326   Thu Jul 29 22:08:32 2010 AlbertoUpdateSUSMore optics installed on the BS table[Koji, Steve, Kiwamu, Alberto]
- This afternoon we installed
a few new optics on the BS table: GR_PBS,
  
  3429   Tue Aug 17 09:06:08 2010 AlbertoUpdateelogelog was downI just restarted the elog after I found
it down a few minutes ago.
  
  3450   Fri Aug 20 16:41:43 2010 AlbertoUpdateElectronicsFrequency Generation Box Assembly CompletedI finished assembling the frequency generation
unit for the upgrade. I tested it through
to check that the power levels are as expected
 7x 
  3499   Tue Aug 31 17:58:38 2010 AlbertoUpdateElectronicsFSS Frequency Generation Box - Phase NoiseA few weeks ago, on Jul 24, Rana and I
measured the phase noise of the FSS frequency
box (aka the 'Kalmus Box'). See elog entry
 2010-08-31_FSSPhaseNoise04modified.png 
  3501   Wed Sep 1 07:52:27 2010 AlbertoConfigurationElectronicsPMC board unplugged, turned on Sorensen switches on 1Y1 rackToday I put the FSS frequency box back
into the 1Y1 rack.
To power it on, I turned on the 24V
  
  3504   Wed Sep 1 08:40:28 2010 AlbertoConfigurationElectronicsPMC board unplugged, turned on Sorensen switches on 1Y1 rack


   
        
            
  
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