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ID Date Authordown Type Category Subject Text Attachments
  7823   Thu Dec 13 17:24:53 2012 AyakaUpdatePSLPMC calibration for MC_F calibration I calibrated MC_F signal into Hz/rtHz
unit using the transfer function from
MC_F to PMC feedback signal.
 6x 
  7824   Thu Dec 13 18:06:59 2012 AyakaUpdateWienerFilteringNew microphone mounts Yesterday, I made new mounts for
microphones.
 IMG_0129.JPGIMG_0130.JPG 
  7829   Fri Dec 14 03:32:51 2012 AyakaUpdateLSCHigh frequency noise in AS signalI calibrated the AS error signal into the
displacement of the YARM cavity in the same
way as I did before (elog).
 XARM_OL.pdfAS_ITMXexc.pdfASspe_noise.pdfASgain.pngASspe.tar.gz 
  7830   Fri Dec 14 03:49:02 2012 AyakaUpdateGeneralEarthquakeThere was an earthquake around 2:30 am.
Now all the mirrors except SRM are damped.
 earthquake.pngseis.pdf 
  7833   Fri Dec 14 10:09:30 2012 AyakaUpdateLSCHigh frequency noise in AS signal

    

       
            
  
  7835   Fri Dec 14 16:35:38 2012 AyakaUpdateLSCHigh frequency sensitivity improvedSince I found that the the AS sensitivity
seems to be limited by circuit noise, I inserted
a RF amplifier just after the AS RF output.
 ASspe_noise_amp.pdfASspe_acoustic_amp.pdfASnoise.tar.gz 
  12621   Wed Nov 16 17:07:12 2016 AshleyUpdateGeneralPreliminary Microphone DataI am currently looking at the acoustic
noise around both arms to see if there are
any frequencies from machinery around the
 first_PSD_12kHz.pdfIMG_0171.JPG 
  12738   Thu Jan 19 10:21:54 2017 AshleyUpdateGeneralPreliminary Microphone DataBrief Summary:
I am currently looking at the acoustic
noise around both arms to see if there are
 xend_psd.pngxblrms.pngIMG_3734.JPG 
  12826   Mon Feb 13 17:39:45 2017 AshleyUpdateGeneralPreliminary Microphone Data Update
Problems that have occurred since
my last post: All of the sudden, I was getting
very strange data that was very quiet and
 figure_1.pngx_and_y_blrms_03.pngxblrms_median.png 
  13788   Wed Apr 25 17:44:39 2018 ArnoldUpdatePEMPEM Anti-Alias wiring

 
  
  13703   Mon Mar 26 10:15:20 2018 ArijitUpdateIOOPMC and IMC re-locked[Gautam, Arijit]

PMC and IMC re-aligned and re-locked.
Both cavities are staying locked. Arm cavities
  
  14062   Fri Jul 13 00:15:13 2018 Annalisa, TerraConfigurationAUXY arm cavity scan [Annalisa, Terra, Koji, Gautam]

Summary: We
find a configuration for arm scans which
 IMG_6492.JPGIMG_6494.JPG 
  14078   Tue Jul 17 17:37:46 2018 Annalisa, TerraConfigurationThermal CompensationHeaters installationSummary

We
installed two heaters setup on the ETMY bench
in order to try inducing some radius of curvature
 6x 
  14086   Thu Jul 19 04:44:09 2018 Annalisa, TerraSummaryThermal Compensationfrequency shift observed with heating!Annalisa, Gautum, Koji, Terra

Summary: with
the reflector setup, we measured a frequency
 scanning_fine_2018-07-19-07-32-08_parsed.pdfscanning_fine_2018-07-19-06-57-47_parsed.pdfYscan_scanning_parsed_2am.txt.pdf 
  8801   Thu Jul 4 01:09:33 2013 Annalisa, KojiUpdateLSCPRMI locked with REFL165Summary:
-
The new REFL165 PD was installed on the AP
 130703_PRMI.pdfScreenshot.png 
  8183   Wed Feb 27 14:39:59 2013 AnnalisaUpdateLSCFibre laid for RFPD audio [Annalisa, Jenne, Rana, Steve]
We installed the fibres on cable
trays the 1Y2 and the Control Room.
  
  8190   Wed Feb 27 19:27:29 2013 AnnalisaHowToCOMSOL TipsMirror support Eigenfrequency I studied the eigenfrequencies of
a mirror support using COMSOL.
 
 IronSupport.pngIronSupportEigenfreq.png 
  8226   Mon Mar 4 20:03:42 2013 AnnalisaHowToCOMSOL TipsStudy of mirror mount eigenfrequencies I studied the eigenfrequencies of
a mirror mount designed with COMSOL.
I imposed fixed constraints for the
 MirrorSupport1.pngMirrorSupportEig1.pngpedestal.pngBase2.png 
  8244   Wed Mar 6 18:51:07 2013 AnnalisaUpdateAlignmentAuxiliary laser installed for FSR and TMS measurement of the PRCWe want to measure the g-factor of the
PRC using the beat note of the main laser
with an auxiliary NPRO laser.
 IMG_3-6-13.JPG 
  8257   Fri Mar 8 12:57:57 2013 AnnalisaUpdateABSLBS installed on ITMY table Sendhil and I installed the S polarized
BS on the ITMY table to steer the NPRO beam
through the AR wedge and align it to the
  
  8303   Mon Mar 18 12:02:12 2013 AnnalisaConfigurationABSLABSL setup for g-factor measurement of PRCMotivations
The ABSL
technique has been already used in the past
to measure the 
  
  8305   Mon Mar 18 12:35:29 2013 AnnalisaBureaucracyAuxiliary lockingYend table upgrade - go fetch NPRO from ATF

    

       
            
  
  8308   Mon Mar 18 20:13:18 2013 AnnalisaBureaucracyAuxiliary lockingYend table upgrade - go fetch NPRO from ATF

    

       
            
  
  8313   Tue Mar 19 20:24:56 2013 AnnalisaUpdateAuxiliary lockingAuxiliary laser on PSL table I moved the auxiliary laser from
the ITMY table to the PSL table and installed
all the optics (mirrors and lenses) to steer
  
  8322   Thu Mar 21 09:53:46 2013 AnnalisaUpdateLockingFinding the beat note Yesterday I tried to find the beat
note between the main PSL and the auxiliary
NPRO, but I didn't :( 
  
  8327   Thu Mar 21 13:11:42 2013 AnnalisaUpdateLockingFinding the beat note

    

       
            
 Beat_note_setup.jpg 
  8329   Thu Mar 21 14:02:45 2013 AnnalisaUpdateLockingincident angles

    

       
            
  
  8333   Fri Mar 22 23:23:38 2013 AnnalisaUpdateLockingBeat note still missing[Annalisa, Manasa, Koji]
I updated the setup for the beat
note. The main reason is that I needed to
 Beat_note_-_new_setup.jpg 
  8345   Mon Mar 25 23:20:57 2013 AnnalisaSummaryAuxiliary lockingBeat note found![Annalisa, Manasa]
The beat note between the main PSL
and the auxiliarly NPRO has been found!
  
  8361   Wed Mar 27 21:53:21 2013 AnnalisaUpdateABSLBeat note of ATF auxiliary laserAfter measuring the beat note, the "Alberto"
NPRO auxiliary laser has been moved from
the PSL table to the POY table. Its beam
  
  8368   Thu Mar 28 19:32:22 2013 AnnalisaSummaryAuxiliary lockingBeat note found! 
 I plot the variation of the
beat note frequency as a function of "Alberto"
 BeatFreq.jpg 
  8369   Thu Mar 28 23:00:30 2013 AnnalisaUpdateABSLBeat note of ATF auxiliary laser found 
The beat note for the ATF lab laser
has been found. 
  
  8370   Thu Mar 28 23:06:48 2013 AnnalisaUpdateAuxiliary locking"Alberto" NPRO laser again on PSL table "Alberto"NPRO laser has
been moved again on PSL table in order to
make a measurement of the beat note varying
  
  8386   Mon Apr 1 23:22:17 2013 AnnalisaUpdateAuxiliary lockingBeat note between "Alberto" NPRO laser and PSL laserI measured the beat note between the "Alberto"
NPRO laser and the PSL varying the PSL temperature
and find the matching NPRO temperature that
 Beat_Note.jpg 
  8396   Tue Apr 2 22:39:17 2013 AnnalisaUpdateAuxiliary lockingBeat note between "Alberto" NPRO laser and PSL laser 
 The beat note between the PSL
laser and the "Alberto" NPRO laser
 Beat_note_3col.jpg 
  8437   Wed Apr 10 15:49:22 2013 AnnalisaConfigurationCOMSOL TipsYend table eigenfrequency simulation with COMSOL I made a Simulation with COMSOL for
the Yend table. Mainly, I tried to see how
the lower eigenmode changes with the number
 Pics_end_table.pdf 
  8495   Fri Apr 26 10:50:07 2013 AnnalisaUpdateABSLATF laser on PSLThe ATF NPRO auxiliary laser has been moved
on the PSL table. All the optics for beat
note measurement are in place and alignment
  
  8561   Fri May 10 20:05:21 2013 AnnalisaUpdate40m UpgradingEndtable upgrade for auxiliary green laser : progressI rotated some mounts along
the green beam path, and I started aligning
the beam again.
  
  8565   Mon May 13 21:35:55 2013 AnnalisaUpdate40m UpgradingEndtable upgrade for auxiliary green laser : progressYend
table - Current status
  
  8576   Tue May 14 21:03:15 2013 AnnalisaUpdate40m UpgradingEndtable upgrade for auxiliary green laser : progress 
GREEN 
The new lenses arrived, and I put
  
  8584   Wed May 15 21:27:39 2013 AnnalisaUpdate40m UpgradingEndtable upgrade for auxiliary green laser : progress 
GREEN
I still have problems in maximizing
  
  8594   Fri May 17 00:32:32 2013 AnnalisaUpdate40m upgradingETMY - progress[Rana, Annalisa] 
 GREEN
 IMG_0536.JPG 
  8597   Fri May 17 18:24:04 2013 AnnalisaUpdate40m upgradingETMY - progressI aligned the green beam into the Faraday.
I needed an HWP to have the right polarization
for the light entering the Faraday itself.
  
  8622   Thu May 23 00:16:32 2013 AnnalisaUpdate40m upgradingETMY - progress [Annalisa, Koji] 
 GREEN
 TransMonAndOplev.jpg 
  8637   Fri May 24 02:12:50 2013 AnnalisaUpdate40m upgradingETMY - Mode Matching for green 
 Mode
Matching calculation for green beam - Yarm
 ModeMatchingGreen.jpgModeMatchingGreenZoom.jpgXYpath.jpg 
  8639   Fri May 24 12:50:25 2013 AnnalisaUpdate40m upgradingETMY - Mode Matching for green

    

       
            
  
  8645   Sat May 25 02:03:48 2013 AnnalisaUpdate40m upgradingETMY - Mode Matching for green - new calculation Mode
matching calculation for green - Yarm
I
 ModeMatchingGreenNEW.jpgModeMatchingGreenZoomNEW.jpgXYpathNEW.jpgphoto1.JPGphoto2.JPG 
  8646   Mon May 27 21:38:53 2013 AnnalisaUpdate40m upgradingETMY - Beam Dumps 
I put many razor dumps along the
IR/green path. The rejected beam from the
  
  8652   Tue May 28 22:11:23 2013 AnnalisaUpdate40m upgradingETMY - Yarm shutter cable 
 For some strange reason the
Yarm shutter cable runs up to the POY table,
  
  8660   Thu May 30 20:45:53 2013 AnnalisaUpdateendtable upgradeETMY - oplev

    

       
            
  
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