40m QIL Cryo_Lab CTN SUS_Lab TCS_Lab OMC_Lab CRIME_Lab FEA ENG_Labs OptContFac Mariner WBEEShop
  40m Log, Page 337 of 337  Not logged in ELOG logo
IDup Date Author Type Category Subject Text Attachments
  16950   Mon Jun 27 13:25:50 2022 CiciUpdateGeneralCharacterizing the Transfer Loop[Deeksha, Cici]

We first took data of a simple
low pass filter, and attempted to perform
 TF_measurement_b.pngtransfer_function_mag_fit.pngtransfer_function_phase_fit.pngflowchart.jpg 
  16951   Mon Jun 27 13:39:40 2022 DeekshaUpdateElectronicsSetting up the MokuLab[Cici, Deeksha]

On Friday Cici and I set up the
Mokulab to take readings of our loop. The
 WhatsApp_Image_2022-06-24_at_5.21.28_PM.jpeg 
  16952   Mon Jun 27 18:54:27 2022 yutaUpdateLSCModulation depths measurement using Yarm cavity scan[Yehonathan, Yuta]
EDITED
by YM on 22:11 June 27, 2022 to correct for
 YarmModIndex.png 
  16953   Tue Jun 28 09:03:58 2022 JCUpdateGeneralOrganizing and CleaningThe plan for
the tools in 40m

As of right now, there are 4 tool
  
  16954   Tue Jun 28 14:24:23 2022 yutaUpdateBHDBHD DC PD signals now also sent to c1lsc to circumvent IPC error[JC, Yuta]

To circumvent IPC error sending
BHD DC PD signals from c1sus2 to c1lsc, DB9
 C1LSC.JPGC1SUS2.JPGScreenshot_2022-06-28_16-03-16_BHDDCPDcopied.png 
  16955   Tue Jun 28 16:26:58 2022 CiciSummaryGeneralVector fitting open loop transfer function/Audio cancellation of optical table enclosure[Deeksha, Cici]

We attempted to use vectfit to
fit our earlier transfer function data, and
 vectfit_firstattempt.pngTFSR785_28-06-2022_161937.pdfenclosure_open.MP4enclosure_closed.MP4 
  16956   Tue Jun 28 16:59:35 2022 PacoSummaryALSALS beat allan deviation (XARM)[Paco]

I took ~ 7 minutes of XALS beatnote
data with the XAUX laser locked to the XARM
 xbeat_1340469968.pdffrac_avar_xbeat.pdf 
  16957   Tue Jun 28 17:07:47 2022 AnchalUpdateCalibrationAdded Beatnote channels in demodulation of c1calI added today demodulation of C1:LSC-BEATX/Y_FINE_I/Q
in the c1cal demodulation where different
degrees of freedom can be dithered. For McCal
  
  16958   Tue Jun 28 18:19:09 2022 TomislavUpdateElectronicsElectronics noiseI measured electronics noise of WFSs and
QPD (of the WFS/QPD, whitening, ADC...) by
closing PSL and measuring the error signal.
 electronics_noise_spectra.pngerror_signal.png 
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