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ID Date Author Type Category Subjectup Text Attachments
  17064   Fri Aug 5 17:03:31 2022 YehonathanSummaryGeneralTesting 950nm laser found in trash pileI set out to test the actuation bandwidth
of the 950nm laser. I hooked the laser to
the output of the bias tee of PD testing
 20220805_164434.jpgLaserActuation_TF_Measurement.drawio.pdf 
  17162   Wed Sep 28 19:15:56 2022 KojiUpdateGeneralTesting 950nm laser found in trash pileI don't know what was wrong with the
past setup but the 950nm laser (QPHOTONICS
QFLD-950-3S) just worked fine up to ~300MHz
 PXL_20220929_013850989.MP.jpgPXL_20220929_013859439.jpgPXL_20220929_013911125.jpg 
  7747   Mon Nov 26 19:27:59 2012 RijuHowTo Testing AG4395A+GPIBRiju, Jenne
We have checked the transfer function
of a bandpass filter using AG4395A network
 tfmag.jpgtfphase.jpg 
  7756   Tue Nov 27 19:06:16 2012 RijuUpdate Testing AG4395A+GPIB I ve tested another bandpass filter
today with similar set-up. This time I took
the data with corrected reference level.
 tfmag1.jpgtfphase1.jpg 
  7817   Wed Dec 12 17:26:47 2012 RijuUpdate Testing AG4395A+GPIBI repeated my experiment to get noise level.
To get that I disconnected the bandpass filter
SBP-10.7  from channel A of network
 TFbandpassfilter.pdf 
  13009   Tue May 23 18:09:18 2017 KaustubhConfigurationGeneralTesting ET-3010 PDIn continuation with the previous(ET-3040
PD) test.

The ET-3010 PD requires to be fiber
  
  5671   Sat Oct 15 16:42:08 2011 KojiUpdateLSCTesting REFL165  Test results of new REFL165 (the
first attachment)
- The resonant freq 166.2MHz, 
 REFL165_test_111014_KA.pdfREFL165_transimpedance2.pdf 
  5673   Sun Oct 16 02:30:00 2011 ranaUpdateElectronicsTesting REFL165 Unless the bias feedback circuit has been
tuned for the 1 mm diode, its possible that
you are seeing some C(V) effects. Its easy
  
  9009   Tue Aug 13 21:49:32 2013 KojiSummaryGeneralTesting new AG4395A network analyzerNew AG4395, sn MY41101114  for West
Bridge Labs was delivered. For the test purpose
it is at the 40m now.
 AG4395A_noise.pdf 
  3596   Thu Sep 23 02:23:04 2010 koji,taraSummaryElectronicsTesting new TTFSS I tested the new table top
frequency stabilization system(TTFSS), 
  
  15937   Thu Mar 18 09:18:49 2021 Paco, AnchalUpdateSUSTesting of new input matrices with new data[Paco, Anchal]

Since the new generated matrices
were created for the measurement made last
 MC_Optics_Kicked_Time_Series_1.pdfTEST_Input_Matrix_Diagonalization.pdf 
  15939   Thu Mar 18 12:46:53 2021 ranaUpdateSUSTesting of new input matrices with new dataGood Enough! Let's move on with output
matrix tuning. I will talk to you guys about
it privately so that the whole doesn't
  
  12999   Fri May 19 19:18:53 2017 KaustubhSummaryGeneralTesting of the new Photo Detectors ET-3010 and ET-3040Motivation:

I got some hands-on-experience
on using RF photodetectors and the Network
 IMG_20170519_173247922.jpgIMG_20170519_173253252.jpgIMG_20170519_173300174.jpgPD_test_setup.png 
  13005   Mon May 22 18:20:27 2017 KaustubhSummaryGeneralTesting of the new Photo Detectors ET-3010 and ET-3040I am adding the text files with the data
readings and paramater settings along
with the Bode Plot of the data. I plotted
 ET-3040_test.zipET-3040_test.pdf 
  13875   Mon May 21 18:02:55 2018 keerthanaUpdateGeneralTesting of the new mini-circuits frequency counterToday, I tested the new mini-circuit frequency
counter by connecting it with the beat signal
output. The frequency counter works fine.
 frequency_counter.jpg 
  2599   Fri Feb 12 15:59:16 2010 josephbUpdateComputersTestpoints not workingNon-testpoint channels seem to be working
in data viewer, however testpoints are not. 
The tpman process is not running on fb40m. 
  
  13287   Fri Sep 1 16:55:27 2017 gautamUpdateComputersTestpoints now accessible againThanks to   
  3954   Fri Nov 19 12:53:50 2010 josephbUpdateCDSTestpoints on c1iscex now workingProblem:
c1iscex did not have test points
working last night.
  
  3878   Mon Nov 8 10:37:14 2010 KojiUpdateIOOThe 10% pick-off for MCREFL was replaced to a HR mirrorAs MC2 Trans mon QPD is temporary removed
for fixing, we needed a reference for the
MC alignment.
  
  1454   Fri Apr 3 17:20:05 2009 YoichiUpdateLockingThe 3.8kHz peak seems like the DARM RSE (not 100% sure though)Yoichi, Kentaro,

Last night, we took several measurements
 AO-TF-DARM-OFFSET.pngAO-TF-DARM-DEMOD-PHASE.pngAO-TF-MICH-OFFSET.pngPOX_1I.pngDARM-Loop.pdf 
  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 
  783   Sat Aug 2 13:07:23 2008 KojiConfigurationGeneralThe AP table cleanedDuring the construction of the independent
PLL I cleaned up some of the unused optics
from the AP table. Essentially this should
  
  4257   Mon Feb 7 19:21:32 2011 Beard PapaMetaphysicsPhotosThe Adventures of Dr Stochino and Beard Papa    
  4037   Thu Dec 9 12:28:52 2010 josephb, alexUpdateCDSThe Dolphin is in (Reflected memory that is)Setting the Configurations files:
On
the fb machine in /etc/dis/ there are several
configurations files that need to be set
  
  1025   Fri Oct 3 19:38:02 2008 robMetaphysicsEnvironmentThe Gatekeeper
Found this lady outside the door of the 40m
lab a few nights ago.
 DSC_0409.JPG 
  1026   Sat Oct 4 07:23:42 2008 KojiMetaphysicsEnvironmentThe GatekeeperHi, this is Koji from Japan.

I am afraid that this is a poisonous spider,
  
  5498   Wed Sep 21 14:28:25 2011 KojiSummaryLSCThe LSC code/screen modification for LSC LOCKINsThe
LSC code has been modified
-
The code was modified, compiled, and installed.
  
  5522   Thu Sep 22 18:33:01 2011 KojiSummaryLSCThe LSC screen modificationAs per the request of Anamaria, I have
added the slider of the demodulation phase
for each RF PD screens.
 PD_screen.png 
  5528   Thu Sep 22 23:18:51 2011 KojiSummaryLSCThe LSC screen modification 
C1LSC_RFPD.adl screen was modified
to have more information.
 C1LSC_RFPD.png 
  4304   Tue Feb 15 21:45:08 2011 ranaUpdateIOOThe MC TRANS StoryI forgot
to elog that last night I touched
up the MC2_TRANS QPD setup
 a.png 
  2616   Fri Feb 19 10:18:19 2010 JenneUpdateVACThe P1 vac pressure is almost to 3mTorrThe Vac pressure measured at P1 is at 2.5mTorr. 
I expect we'll hit 3mTorr sometime this afternoon,
at which point (according to Steve) the interlock
 VacPressureAlmostShutoffLaser_19Feb2010.png 
  11175   Thu Mar 26 10:41:06 2015 SteveUpdateIOOThe PMC is not clampedThe PMC is seated on 3 SS balls and it
is free to move. I'm sure it will move
in an earthquake. Not much, because the input
 IMG_0001.JPGPMCstops.jpgPMCballv.jpg 
  4223   Fri Jan 28 15:50:44 2011 JenneConfigurationPSLThe PSL has a name!Back in the days when we were talking about
getting a new 2W PSL, I was given naming
rights by Rana for this new laser. 
 EdwinTheLaser.jpg 
  5450   Sun Sep 18 15:57:00 2011 KojiUpdateIOOThe PZT driver engaged to PZT1[Koji Kiwamu]
The
pzt driver for PZT1 has been installed.
  
  7335   Tue Sep 4 13:31:55 2012 JenneUpdateGeneralThe PlanWe need a plan for the rest of the week. 
I want to be closing the heavy doors on Friday
at the latest.  Please add to / comment
  
  7336   Tue Sep 4 13:44:17 2012 ManasaUpdateGeneralThe Plan

    

       
            
  
  10614   Wed Oct 15 22:39:17 2014 JenneUpdateLSCThe Plan [Rana, Jenne]
We're summarizing the discussions
of the last few days as to the game plan
  
  7340   Tue Sep 4 20:13:46 2012 JenneUpdateGeneralThe Plan - Tues evening version Tues
* Hit center of ETMY, using input
optics, PR3.
  
  3161   Tue Jul 6 17:29:04 2010 ChipUpdatePEMThe Ranger is mine!    
  7212   Fri Aug 17 04:13:45 2012 SashaUpdateSimulationsThe SimPlant Saga CONTINUESTHE GOOD: SimPlants
ITMX and ETMX are officially ONLINE. Damping
 plantvreality.jpg 
  7218   Fri Aug 17 12:47:30 2012 SashaUpdateSimulationsThe SimPlant Saga CONTINUES

    

       
            
  
  703   Sat Jul 19 19:41:56 2008 YoichiAoGPSLThe author of the entry 702 is Yoichi not RobI made a mistake.   
  3482   Fri Aug 27 22:09:37 2010 JenneUpdatePSLThe beginnings of the new PSL[Rana, Jenne]
Like
 phoenix.jpg 
  3483   Sat Aug 28 01:02:31 2010 ranaUpdatePSLThe beginnings of the new PSLIn fact, many of the mounts need
to be adapted to 4": the beefy
steering mirrors going into the PMC, the
  
  3871   Fri Nov 5 19:33:18 2010 JenneUpdateElectronicsThe beginnings of the new phase of the RF workJoon Ho and I took a look at the RF stuff
that Alberto left, and we determined that
we've got most everything that we need. 
  
  13995   Thu Jun 21 13:24:00 2018 keerthanaUpdateelogThe cavity scan data of June 20(Jon, Keerthana, Sandrine)

We tried to align the AUX and PSL
laser yesterday. We collected the data from
 AS110_Beat.pdfYEND_Beat.pdf 
  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
  
  4067   Fri Dec 17 00:55:30 2010 KojiUpdateIOOThe dark port beams reached the AP table[Koji and Kiwamu]
We
obtained two dark port beams on the AP table:
  
  4714   Fri May 13 22:45:37 2011 SureshUpdateRF SystemThe full set of 8 Demod boards is ready for testingWe have Completed the hardware changes
to the full set of 8 demod boards. 
The last one completed today is AS11. 
  
  7789   Wed Dec 5 01:06:22 2012 AyakaUpdateWienerFilteringThe microphones and the speaker on the AP table In order to see the acoustic coupling
on arm signals, I set 6 microphones and the
speaker on the AP table. The microphones
 DSC_4956.JPGDSC_4961.JPGAPsig.pdf 
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