40m QIL Cryo_Lab CTN SUS_Lab TCS_Lab OMC_Lab CRIME_Lab FEA ENG_Labs OptContFac Mariner WBEEShop
  40m Log, Page 11 of 341  Not logged in ELOG logo
ID Date Authorup Type Category Subject Text Attachments
  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


   
        
            
  
  3506   Wed Sep 1 11:34:39 2010 AlbertoUpdateElectronicsFSS Box Phase Noise from DAQI measured the phase noise of the LO output
of the FSS box from the DAQ. I'm attaching
the results.
 2010-09-01_FSSPhaseNoise.png2010-09-01_FSSphaseNoiseMeasurementSetup.png 
  3509   Wed Sep 1 16:29:28 2010 AlbertoUpdateElectronicsFSS Box Phase Noise from DAQ - Measurement setup modified


   
        
            
 2010-09-01_FSSPhaseNoise_DAQ_00-02_comparison.png2010-09-01_FSSPhaseNoise_DAQ_02.pngFSSphaseNoiseMeasurementSetup02.png 
  3520   Fri Sep 3 11:03:41 2010 AlbertoFrogsElectronicsCable cutting toolsI found this very interesting German maker
of cool cable cutting tools. It's called
Jokari.
  
  3526   Mon Sep 6 10:08:10 2010 AlbertoConfigurationComputersNetgear Network Switch fan broken.The Netgear Network Switch in the top shelf
of Nodus' rack has a broken fan. It is the
one interfaced to the Martian network.
  
  3529   Mon Sep 6 22:09:11 2010 AlbertoUpdateElectronicsRF Frequency Generation Box heat sink installed and testedLast week I noticed that the high power
amplifiers in the Frequency Generation Box
became hot after 2 hours of continuous operation
 DSC_2467.JPG2010-09-06_FreqBoxAmplifierTemperatureTrend.pngDSC_2433.JPG 
  3530   Tue Sep 7 08:56:00 2010 AlbertoUpdateElectronicsFrequency Generation Box Assembly - Phase Noise MeasurementsHere are the results of my phase noise
measurements on the 7 outputs of the Frequency
Generation Box. (BIN=95L applied by DTT).
 2010-09-03_FreqBoxPhaseNoise_AllOutputsComparison_smooth.png2010-09-03_FreqBoxPhaseNoise_AllOutputsComparison_smooth.pdf 
  3532   Tue Sep 7 13:31:49 2010 AlbertoUpdateElectronicsRF System - Frequency Distribution Box - Priority PlanWe need a distribution unit in the LSC
rack to: 1) collect the demod signals coming
from the Frequency Generation Box 2) adjust
 Visio-RFsystem_plan_distributiont.pngRFsystem_plant_distribution_priority.png 
  3535   Tue Sep 7 15:57:07 2010 AlbertoConfigurationComputersNodus connection not working. Fixed[Joe, Alberto]
The Nodus connection to the Martian
network stopped working after someone switched
  
  3537   Tue Sep 7 22:21:17 2010 AlbertoConfigurationComputerselog restarted    
  3552   Thu Sep 9 12:02:03 2010 AlbertoUpdateElectronicsFrequency Generation Box - Amplitude Noise MeasurementsI measured the amplitude noise of the source
outputs and the EOM outputs of the Frequency
Generation box.
 FreqBoxAmplitudeNoiseMeasurementSetup.pngFreqBoxAmplitudeNoise_BusbyBox_AllChannels.png 
  3555   Thu Sep 9 18:53:56 2010 AlbertoConfigurationElectronicsBusby Box, Rai's Box, SR554 in the RF cabinetI stored the Busby Box, the Rai's Box and
the SR554 preamp in the RF cabinet down the
Y arm.
  
  3565   Mon Sep 13 11:40:50 2010 AlbertoUpdateElectronicsFrequency Box Documentation Added to the SVNI uploaded all the material about the RF
frequency Generation Box  into the SVN under
the path:
 freqBoxSVNdierctoryStructure.png 
  3572   Tue Sep 14 18:07:41 2010 AlbertoUpdateElectronicsFrequency Box Documentation Added to the SVNI completed a LIGO document describing
design, construction and characterization
of the RF System for the 40m upgrade.
  
  3764   Fri Oct 22 18:22:27 2010 AlbertoUpdateElectronicsEpic Takeover


   
        
            
  
  3783   Tue Oct 26 07:02:05 2010 AlbertoConfigurationelogELOG 2.8.0 -> ELOG 2.7.5


   
        
            
  
  3893   Thu Nov 11 07:26:03 2010 AlbertoUpdateElectronicsREFL11 Photodiode Not Working


   
        
            
  
  2520   Mon Jan 18 09:44:36 2010 Alberto, BobOmnistructureEnvironmentNo rain water infiltrations so farIt has rained continuously for the last
24 hours. Bob walked through the lab looking
for possible water infiltrations. The floor
  
  2971   Fri May 21 16:41:38 2010 Alberto, JoUpdateComputersIt's a boy!Today the new Dell computer for the GSCS
(General SURF Computing Side) arrived.
We put it together and hooked it
  
  2490   Fri Jan 8 20:13:49 2010 Alberto, JoBConfigurationComputersThe 40m Kaiser Permanent Reboot MarathonThis morning after Alex and Jo's tinkering
with Megatron the RFM network crashed and
it brought down also some computers. The
 pasadena_marathon.JPG 
  1261   Fri Jan 30 17:30:31 2009 Alberto, JosephbConfigurationComputersNew computer Ottavia set upAlberto, Joseph,

Today we installed the computer that some
  
  3029   Wed Jun 2 01:47:28 2010 Alberto, KiwamuUpdateIOOmode measurement of new input opticsThe mode
profile of the new input optics was measured.
 afterMMT1.pngbeam_profile.pngMMT1_.dat.zipinside_vac_2.png 
  3046   Thu Jun 3 14:40:28 2010 Alberto, KiwamuUpdateIOOmode measurement of new input optics


   
        
            
  
  1166   Tue Dec 2 17:56:56 2008 Alberto, RanaConfigurationPSLMC AlignmentIn the attempt to maximize the Mode Cleaner
transmission and minimize the reflection
from the steering mirrors of the MC periscope,
  
  1883   Mon Aug 10 20:49:13 2009 Alberto, RanaUpdatePSLPMC Mode Matching Lenses TuningRana, Alberto
This afternoon we tried to improve
the mode matching of the beam to the PMC.
  
  2468   Wed Dec 30 18:01:03 2009 Alberto, RanaUpdateGeneralAll watchdogs tripped this morning


   
        
            
  
  1162   Tue Nov 25 18:38:03 2008 Alberto, RobUpdatePSLMC Periscope AlignmentThis morning when I came in I found the MC
cleaner unlocked and the autolocker script
could not lock it. The reflected beam was
  
  2106   Fri Oct 16 16:44:39 2009 Alberto, SanjitUpdateComputerselog restartedThis afternoon the elog crashed. We just
restarted it.
  
  2477   Tue Jan 5 10:26:32 2010 Alberto, SteveOmnistructureEnvironmentAdded new wall cable-rackswe hung two new WALL cable racks.
One is on the pillar next to the Sp table,
the other is next to the PSL computer rack.
 DSC_1068-1.JPGDSC_1070-1.JPG 
  1193   Thu Dec 18 19:15:54 2008 Alberto, YoichiConfigurationSUSMode Cleaner Cavity Alignment[quote]This morning I found the MC locked
to the 10 mode. When I locked it on the 00
mode, it was unstable and eventually it always
  
  1195   Fri Dec 19 11:29:16 2008 Alberto, YoichiConfigurationMZMZ Trans PDLately, it seems that the matching of the
input beam to the Mode Cleaner has changed.
Also, it is drifting such that it has become
  
  3049   Fri Jun 4 11:32:51 2010 Alberto, kiwamuUpdateIOOMC MMT1 Mirror Tests[Alberto, Kiwamu]
Last Wednesday,
we measured the beam profile after the MC
mode matching telescope n.1 (MMT1). We found
 MCMMT1spareOpticsTestSetup.png 
  2887   Thu May 6 17:47:01 2010 Alberto, kiwamu, Jc The 3rd (aka The Drigg)OmnistructureTMIMinutes from the Lab Organization Commitee meetingToday we met and we finally come up with
a lot of cool, clever, brilliant, outstanding
ideas to organize the lab.
  
  1947   Tue Aug 25 23:16:09 2009 Alberto, ranaConfigurationComputerselog moved in to the cvs pathIn nodus, I moved the elog from /export
to /cvs/cds/caltech. So now it is in the
cvs path instead of a local directory on
  
  8795   Wed Jul 3 11:07:17 2013 AlexSummary Photodetector Characterization [Alex, Koji]
We characterized Koji's BBPD
MOD for REFL165 (see attachment).
 BBPD_PCB.pdftransimpedance_measurement.pdf 
  8806   Mon Jul 8 16:27:49 2013 AlexUpdate Planned rack additionsAlex and Eric
For the photodetector frequency response
automation project, we plan to add modules
 Annotated_Rack_1y1.pdf 
  8829   Thu Jul 11 12:00:50 2013 AlexUpdate Planned rack additions[Eric, Alex]
We mounted our Laser Module and Laser
Power Source in rack 1y1. We plan to add
 Annotated_Rack_1y1_-_update.pdf 
  8849   Mon Jul 15 16:44:46 2013 AlexUpdateOMCOMC North Safety [Eric Alex]
We are planning on testing our laser
module soon, so we have added aluminum foil
 photo_2_(1).JPG 
  8850   Mon Jul 15 16:51:37 2013 AlexConfiguration Planned AS Table addition [Eric, Alex]
We are planning to add our reference
PD to the southern third of the AS Table
 AS_Table_Ref_PD_Addition.pdf 
  8859   Tue Jul 16 17:02:41 2013 Alex ColeConfigurationElectronicsAS Table Additions [Eric, Alex]
We added our reference photodetector
(Newport 1611, REF DET) to the southern edge
 photo_1_(1).JPGphoto_2_(2).JPG 
ELOG V3.1.3-