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ID Dateup Author Type Category Subject Text Attachments
  17002   Thu Jul 14 00:10:08 2022 yutaSummaryLSCFPMI with REFL/AS55 trial continued[Paco, Koji, Yuta]

We managed to lock MICH using REFL55_Q
by setting the demodulation phases and offsets
 AS55_I.pngAS55_Q.pngREFL55_I.pngREFL55_Q.png 
  17003   Thu Jul 14 19:09:51 2022 ranaUpdateGeneralEQ recoveryThere was a EQ in Ridgecrest (approximately
200 km north of Caltech). It was around 6:20
PM local time.
 ETMY-screen.png 
  17004   Thu Jul 14 19:56:15 2022 ranaUpdateIOOmc wfs demodIt looks like Tomislav's measurements
of the WFS demod board noise were actually
of the cable that goes from the whitening
 mcwfs-steps.pdf 
  17005   Fri Jul 15 12:21:58 2022 JCUpdateElectronicsChecking Sorensen Power SuppliesOf the 7 Sorenson Power Supplies I tested,
5 are working fine, 1 cannot output voltage
more than 20 Volts before shorting, and other
 50DF21D7-D61A-4674-B0DA-463378B00ADB.jpegFA4CF579-6C1E-48D5-B152-74F35B4EE90B.jpeg 
  17006   Fri Jul 15 16:20:16 2022 Cici HannaUpdateGeneralFinding UGFI have temporarily abandoned vectfit and
aaa since I've been pretty unsuccessful
with them and I don't need poles/zeroes
 UGF_4042.pngUGF_5650.pngTFSR785_29-06-2022_114042.txtTFSR785_29-06-2022_115650.txt 
  17007   Fri Jul 15 19:13:22 2022 PacoSummaryLSCFPMI with REFL/AS55 demod phase adjust[Yuta, Paco]


We first zero the offsets
in ASDC, AS55, REFL55, POX11, and POY11 when
  
  17008   Fri Jul 15 22:36:04 2022 ranaSummaryLSCFPMI with REFL/AS55 demod phase adjustVery nice!   
  17009   Sat Jul 16 02:44:10 2022 KojiUpdateIOOIMC servo tuningI wasn't sure how the IMC servo was
optimized recently. We used to have the FSS
over all gain (C1:PSL-FSS_MGAIN) of +6dB
 ErrorPSD.pdfOLTF.pdfScreen_Shot_2022-07-16_at_03.59.05.png 
  17010   Mon Jul 18 04:42:54 2022 AnchalUpdateCalibrationError propagation to astrophysical parameters from detector calibration uncertaintyWe can calculate how much detector calibration
uncertainty affects the estimation of astrophysical
parameters using the following method:
 BNSparamsErrorwrtfdError-merged.pdfBBHparamsErrorwrtfdError-merged.pdfBNSparamsEPSwrtCalError.pdfBBHparamsEPSwrtCalError.pdf 
  17011   Mon Jul 18 15:17:51 2022 HangUpdateCalibrationError propagation to astrophysical parameters from detector calibration uncertainty1. In the error propogation equation, it
should be \Delta \Theta = -H^{-1} M \Delta
\Lambda, instead of the fractional error. 
  
  17012   Mon Jul 18 16:39:07 2022 PacoSummaryLSCFPMI locking procedure using REFL55 and AS55[Yuta, Paco]

In summary, we locked FPMI using
REFL55_I, REFL55_Q, and AS55_Q. The key to
 DARM_07_18_2022_FMPI.pdfCARM_07_18_2022_FPMI.pdfMICH_07_18_2022_FPMI.pdffpmi_darm_nb_2022_07.pdf 
  17013   Mon Jul 18 16:49:57 2022 YehonathanUpdateBHDadd Laser RIN to MICH budgetI measured the RIN by taking the spectrum
of C1:MC_TRANS_SUMFILT_OUT and
dividing it by the mean count on that channel
 Laser_RIN.pdfMICH_AS55_Noise_Budget.pdf 
  17014   Mon Jul 18 17:07:12 2022 yutaUpdateLSCx4.12 added to ETMX coil outputs to balance with ETMYTo balance the actuation on ETMX and ETMY,
x4.12
was aded to C1:SUS-ETMX_(UL|UR|LR|LL|SD)COIL
  
  17015   Mon Jul 18 18:33:38 2022 KojiUpdateBHDadd Laser RIN to MICH budgetYou should measure the coupling
by noise injection. Noise budgeting does
not need any modeling:
  
  17016   Mon Jul 18 21:41:42 2022 AnchalSummaryLSCFPMI locking procedure using REFL55 and AS55Now that you have found a working configuration,
I suggest we update CARM and DARM filter
banks so that they are used in locking those
  
  17017   Tue Jul 19 07:34:46 2022 AnchalUpdateCalibrationError propagation to astrophysical parameters from detector calibration uncertaintyAddressing the comments as numbered:


Yeah, that's correct,
that equation normally 
 BNSparamsErrorwrtfdError.pdfBBHparamsErrorwrtfdError.pdfBNSparamsEPSwrtCalError.pdfBBHparamsEPSwrtCalError.pdf 
  17018   Tue Jul 19 16:00:34 2022 yutaConfigurationBHDFast channels for BHD DCPDs now available in c1lsc but not in c1hpc[Paco, Anchal-remote-support, Yuta]

We added fast channels to BHD DC
PDs.
 Screenshot_2022-07-19_14-26-39_c1hpc.pngScreenshot_2022-07-19_14-24-49_c1lsc.pngScreenshot_2022-07-19_15-51-25_GreenGreen.png 
  17019   Tue Jul 19 17:18:34 2022 JCUpdateElectronicsNew Coil Driver on Rack 1X3[Yehonathan, JC]

Yehonathan and I began to put the
electronics on Rack 1X3. To do this, we had
 22DC1767-6073-4D82-BEED-915318B57C03.jpeg 
  17020   Tue Jul 19 18:41:42 2022 yutaUpdateBHDContrast measurements for Michelson and ITM-LO[Paco, Yuta]

We measured contrast of Michelson
 ContrastMeasurements.pdf 
  17021   Wed Jul 20 11:58:45 2022 PacoSummaryGeneralJenne laser kaput?[Paco, Yehonathan, JC]

We were trying to setup the Jenne
laser to characterize the response of three
  
  17022   Wed Jul 20 14:12:07 2022 PacoSummaryGeneralJenne laser kaput![Koji, Yehonathan, Paco]

Koji pointed out that this laser
was always driven with a current driver (which
  
  17023   Wed Jul 20 15:58:52 2022 KojiSummaryGeneralJenne laser kaput!For troubleshooting, the proper laser driver
(found beneath the AG network analyzer) was
connected.
  
  17024   Wed Jul 20 18:07:52 2022 PacoUpdateBHDBHD MICH test[Paco, Yuta, JC]

We did some easy tests on the BHD
readout in preparation for BHD MICH. With
 BHD_MICH_OSC.pdf 
  17025   Thu Jul 21 21:50:47 2022 TegaConfigurationBHDc1sus2 IPC updateIPC
issue still unresolved.

Updated shared memory tag so that
  
  17026   Fri Jul 22 15:05:26 2022 TegaConfigurationBHDc1sus2 shared memory and ADC fix[Tega, Yuta]

We were able to fix the shared
memory issue by updating the receiver model
 Screenshot_2022-07-22_15-04-33_DCPD.pngScreenshot_2022-07-22_15-12-19_models.pngScreenshot_2022-07-22_15-15-11_ERR.pngScreenshot_2022-07-22_15-32-19_GDS.png 
  17027   Fri Jul 22 17:43:19 2022 KojiUpdateGeneralObtained a functional CRT[Koji Paco]

Koji went to Downs and found a
CRT labeled "for 40m Rana?". So
 PXL_20220723_003631871.jpg 
  17028   Fri Jul 22 17:46:10 2022 yutaConfigurationBHDc1sus2 watchdog update and DCPD ERR channels[Tega, Yuta]

We have added C1:HPC-DCPD_A_ERR and
 Screenshot_2022-07-22_17-48-25.png 
  17029   Sun Jul 24 08:56:01 2022 HangUpdateCalibrationError propagation to astrophysical parameters from detector calibration uncertaintySorry I forgot to put tc & phic in
the example. 

I modified astroFisherLib.py
  
  17030   Mon Jul 25 09:05:50 2022 PacoSummaryGeneralTesting 950nm laser found in trash pile[Paco, Yehonathan]

==== Late elog from Friday ====

Koji provided us with a QFLD-950-3S
 PXL_20220722_234600124.jpgPXL_20220722_234551918.jpg 
  17031   Mon Jul 25 09:37:39 2022 DeekshaUpdateElectronicsUsing the DFD to measure PZT TFThe DFD was setup to measure the change
in beatnote when excited. A long long (128in)
cable goes from the SR785 near the DFD all
 ag4395.jpegdfd.jpeg 
  17033   Mon Jul 25 17:58:10 2022 TegaConfigurationBHDc1sus2 IPC dolphin issue updateFrom the 40m
wiki, I was able to use the instructions
here
 Screen_Shot_2022-07-25_at_5.43.28_PM.pngScreen_Shot_2022-07-25_at_5.21.10_PM.pngScreen_Shot_2022-07-25_at_5.30.58_PM.pngScreen_Shot_2022-07-25_at_5.35.19_PM.png 
  17034   Mon Jul 25 18:09:41 2022 TegaConfigurationBHDBHD Homodyne Phase control MEDM screen[Paco, Tega, Yuta]

Today, we made a custom MEDM screen
for the BHD Homodyne Phase Control, which
 Screen_Shot_2022-07-25_at_6.12.08_PM.pngScreen_Shot_2022-07-25_at_6.18.09_PM.png 
  17035   Mon Jul 25 18:22:30 2022 DeekshaSummaryWikiMeasured the PZT TF Successfully Measured the PZT beatnote using the setup
mentioned in elog post 17031. Attached is
the data taken from 10kHz to 1MHz, decadewise
 6x 
  17036   Tue Jul 26 19:50:25 2022 DeekshaUpdateComputer Scripts / ProgramsVector fittingTrying to vectfit to the data taken from
the DFD previously but failing horribly.
I will update this post as soon as I get
 data.pngfit_attempt.png 
  17037   Tue Jul 26 20:54:08 2022 PacoUpdateBHDBHD MICH test - LO phase control[Yuta, Paco]


TL;DR
Successfully
 20220726_BICHD.pdf 
  17038   Tue Jul 26 21:16:41 2022 KojiUpdateComputer Scripts / ProgramsVector fittingI think the fit fails as the measurement
quality is not good enough.

 
  
  17039   Wed Jul 27 14:39:04 2022 DeekshaUpdateElectronicsNew and improved PZT TF data from the DFDPaco and I messed around with the attenuation
of the scope and bandwidth of the IF. We
also replaced the BNC T's in the
 tf_data.pnglatest_data.zipdfd_-_new.drawio.png 
  17040   Wed Jul 27 18:30:50 2022 yutaUpdateBHDLO beam power at BHD DCPDs is significantly lower than expected[Paco, Yehonathan, Yuta]

We measured power and counts at
BHD DCPDs with LO beam only and ITM single
 LOBeamAtBHD.JPGITMXSingleBounceAtBHD.jpg 
  17041   Thu Jul 28 13:09:28 2022 yehonathanUpdateBHDMode matching considerationsThe LO beam was found to have a power of
60uW, 10% of the power expected. We are pretty
sure about the expectation because the AS
  
  17042   Thu Jul 28 14:34:40 2022 YehonathanUpdateBHDLO beam power at BHD DCPDs is significantly lower than expected{Yuta, Yehonathan}

We went to the BS table to check
the POP beam power. We first notice that
  
  17043   Thu Jul 28 15:11:59 2022 KojiUpdateCDSToo huge script_archiveAs a result of the following work, the
file volume of /cvs/cds
was reduced from 3.2TB to 2.2TB,
  
  17044   Thu Jul 28 16:51:55 2022 TegaUpdateBHDShaking test for LO beam AS beam to BHD DCPDs[Yuta, Tega, Yehonathan]

To investigate the BHD power imbalance
and clipping issues, we did some shaking
 Screenshot_2022-07-28_16-58-34_LOandASShaking.pngScreenshot_2022-07-28_18-08-55_DCPDPOPSuspensionCoherence.png 
  17045   Thu Jul 28 20:16:26 2022 AnchalUpdateBHDShaking test for LO beam AS beam to BHD DCPDsSome insights from the inside vacuum situation:


The beam is an incident
near normal on PR2 close to the center of
  
  17046   Fri Jul 29 18:24:53 2022 TegaUpdateBHDLO beam power improved by factor of 6 after LO and AS beam alignment[Yuta, Tega]

From our previous work (elog 17044)
 LO_and_oldAS_settings.pngBHD_fringe_settings.pngScreenshot_2022-07-29_19-37-39.pngFromTheLeft-AS-POP-LO.JPG 
  17047   Fri Jul 29 20:21:11 2022 KojiUpdatePSLFSSSlow/MCAutolocker issue (docker)MCAutolocker/FSSSlow are not properly documented
and not properly working.
Tidy up the script and documentation,
  
  17048   Fri Jul 29 22:37:54 2022 KojiUpdateIOOWFS investigationI wanted to check what's wrong with
the WFS.

I played with MC2 misalignment
 PXL_20220730_040900843.jpgPXL_20220730_041216848.jpg 
  17049   Sat Jul 30 10:38:12 2022 AnchalUpdatePSLFSSSlow/MCAutolocker issue (docker)The FSSSlow script was not properly documented
and it was not working, so I had to use one
that I knew worked from CTN. This scripts
  
  17050   Sat Jul 30 12:48:18 2022 KojiUpdatePSLFSSSlow/MCAutolocker issue (docker)> it only starts working when C1:IOO-MC_LOCK
is 1 and C1:PSL-FSS_SLOWLOOP is 1.

- OK. Your new MCAutolocker does
  
  17051   Mon Aug 1 17:19:39 2022 CiciSummaryGeneralRPitaya Data on Jupyter NotebookHave successfully plotted data from the
Red Pitaya on Jupyter Notebook! Have
lost years of my life fighting with PyQt.
  
  17052   Mon Aug 1 18:42:39 2022 TegaConfigurationBHDc1sus2 IPC dolphin issue update[Yuta, Tega]

We decided to give the dolphin
debugging another go. Firstly, we noticed
 c1sus2_dolphin.pngfb1_dxamin_status.pngdolphin_num_mem_init2.png 
ELOG V3.1.3-