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New entries since:Wed Dec 31 16:00:00 1969
ID Date Author Type Categorydown Subject Text Attachments
  233   Mon Aug 10 11:57:17 2015 KojiElectronicsAM Stabilized EOM DriverRF AM Measurement Unit E1500151Spending some days to figure out how to
program CPLD (Xilinx CoolRunner II XC2C384).

I learned that the JTAG cable which
 screen_shot.png 
  234   Mon Aug 10 12:09:49 2015 KojiElectronicsAM Stabilized EOM DriverRF AM Measurement Unit E1500151Still suffering from a power supply
issue!

I have been tracking the issues
 IMG_20150809_215628585_HDR.jpg 
  237   Fri Aug 28 01:08:14 2015 KojiElectronicsAM Stabilized EOM DriverRF AM Measurement Unit E1500151 ~ CalibrationWorked on the calibration of the
RF AM Measurement Unit. 

The calibration concept is as follows:
 RFAM_detector_calib.pdfRFAM_detector_calib_spectra.pdf 
  238   Fri Aug 28 02:14:53 2015 KojiElectronicsAM Stabilized EOM DriverRF AM Measurement Unit E1500151 ~ 37MHz OCXO AM measurementIn order to check the noise level
of the RFAM detector, the power and cross
spectra for the same signal source
 OCXO_AM_noise.pdf 
  240   Tue Sep 8 10:55:31 2015 KojiElectronicsAM Stabilized EOM DriverRF AM Measurement Unit E1500151 ~ 37MHz OCXO AM measurementTest sheet: https://dcc.ligo.org/LIGO-E1400445

Test Result (S1500114): https://dcc.ligo.org/S1500114
  
  346   Thu Apr 18 20:47:54 2019 JoeOptics OMC initial alignment and locking[Joe, Phillip, Koji, Stephen]

*draft post, please add anymore
info if I missed something*
 IMG_7676.JPGIMG_7666.JPGIMG_7670.JPGIMG_7883.JPGIMG_7882.JPG 
  347   Fri Apr 19 09:21:07 2019 PhilipOptics Cleaning of OMC opticsach[Joe, Phillip, Koji,
Stephen]

Work from 17.04.2019
 IMG_7877.JPGIMG_7883.JPGIMG_7884.JPG 
  348   Fri Apr 19 09:35:28 2019 JoeGeneral Adjusting cavity axis, re-alignment of OMC and locking[koji,philip,
joe, liyuan,
steven]
 FSR_Scan_Fitfsrdata.pdfIMG_7679_cropped.jpg 
  349   Fri Apr 19 11:34:19 2019 KojiOptics OMC initial alignment and lockingThe spot on CM1 was found displaced by
3.4mm (horiz.) and 3.0mm (vert.)
in the upper right direction looking from
 misalignment1.pdf 
  351   Mon Apr 22 09:54:21 2019 JoeGeneral Shortening cavity (A5,A14,PZT11,PZT22) to get closer to design FSR[Koji,Joe,Philip,stephen]

in units 20um per div on the micrometer
[n.b. we reailised that its 10um per div
 CM1_IMG_7699.jpgCM2_IMG_7697.jpg 
  352   Mon Apr 22 19:54:28 2019 KojiGeneral OMC(004): Spot positions at the end of Apr 22nd   misalignment4.pdf 
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