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  17213   Tue Oct 25 22:01:53 2022 ranaConfigurationPEMAuto Z on trillium interface boardthanks, this seems to have recentered well.

It looks like it started to act
funny at 0400 UTC on 10/24, so thats 9 PM
 Screen_Shot_2022-10-26_at_4.45.30_PM.png 
  17212   Tue Oct 25 17:27:11 2022 PacoSummaryBHDLO phase control with RF + audio sidebands[Yuta, Paco]

Today
we locked LO phase with BH55 + Audio dithering
 Screenshot_2022-10-25_17-36-45_LOPHASELOCKED.pngScreenshot_2022-10-25_17-33-33_LOPHASELOCKING_MICHBHD_ELP80_280HzDither.png 
  17211   Tue Oct 25 14:29:56 2022 PacoSummarySEIEarthquake tripped SUS[Yuta, Paco, JC]

This
eq  potentially tripped ETMY, PR2,
  
  17210   Tue Oct 25 13:55:37 2022 KojiConfigurationPEMAuto Z on trillium interface boardThis nicely brought the sensing signal
back to ~zero. See attachment


Some basic info:
 Screen_Shot_2022-10-25_at_13.56.46.png 
  17209   Tue Oct 25 09:57:34 2022 PacoConfigurationPEMAuto Z on trillium interface boardI pressed the Auto-Z(ero) button for ~
3 seconds at ~9:55 local (pacific) time on
the trillium interface on 1X5.
  
  17208   Tue Oct 25 08:25:00 2022 JCUpdateBHDBHD fringe aligned with reduced LO and AS beam clippingI aligned today using this scheme. I couldn't
seem to get C1:IOO-MC_TRANS_SUM above
13400 by using WFS or manually aligning.
  
  17207   Tue Oct 25 05:26:24 2022 ranaSummaryIOOMC SUS tuningin looking closer at the IMC WFS performance
I notice 2 issues:


the watchdog thresholds
  
  17206   Mon Oct 24 18:01:00 2022 PacoSummaryBHDBHD actuation measurements[Yuta, Paco]

Today
we calibrated the actuation on BHD suspended
 OLTF_LOPhaseLocking_ITMYSingleBounce.pngActuationRatio_ITMY_AS1_AS4_LO1_LO2.png 
  17205   Sat Oct 22 21:36:28 2022 ranaSummaryBHDBH55 phase locking effortsgive us an animated GIF of this cool new
tool! - I'm curious what happens if you
look at 2 DoF of the same suspension. Also
  
  17204   Fri Oct 21 16:15:10 2022 yutaSummaryBHDLO phase locking with BH55 audio dither trials[Paco, Yuta]

We are still struggling with locking
LO phase in MICH or ITM single bounce with
 Screenshot_2022-10-21_15-33-18_LO_OLTF_LO1_BH55_Q.pngScreenshot_2022-10-21_15-42-50_LO_OLTF_LO1_BHDCDIFF.pngScreenshot_2022-10-21_15-44-53_MICH_OLTF.pngScreenshot_2022-10-21_15-50-43_LO_OLTF_LO1_BH55_Q_MICH.pngScreenshot_2022-10-21_16-11-16.png 
  17203   Fri Oct 21 10:37:36 2022 AnchalSummaryBHDBH55 phase locking effortsAfter the amplifier was modified with a
capacitor, we continued trying to approach
locking LO phase to in quadrature with AS
  
  17202   Thu Oct 20 19:47:24 2022 TegaUpdateCDSRelocate front-ends to Rack 1X7We mounted chiara, all front-end machines
and switches in rack 1x7; reconnected power,
dolphin, onestop and timing cables; and restarted
 IMG_20221020_193623269.jpgIMG_20221020_193637034.jpgiop_status_20221020.pngiop_status_20221020_restart_models.pngc1ioo_shm_glitch.png 
  17201   Thu Oct 20 14:13:42 2022 yutaSummaryPSLPMC and IMC sideband frequencies measuredI measured the sideband frequencies for
PMC and IMC lock (to use it for Mariner PMC
and IMC design).
 IMC.JPGPMC.JPG 
  17200   Wed Oct 19 11:09:20 2022 RadhikaUpdateBHDBH55 RF output amplified[Anchal, Radhika]

We selected a 102K (1 nF) ceramic
capacitor and a 100 uF electrolytic capacitor
 IMG_3840.jpegIMG_3847.jpeg 
  17199   Wed Oct 19 09:48:49 2022 AnchalUpdateOptimal ControlIMC open loop noise monitorTurning WFS loops back on at:

PDT: 2022-10-19 09:48:16.956979
PDT
  
  17198   Tue Oct 18 20:43:38 2022 AnchalUpdateOptimal ControlIMC open loop noise monitorWFS loops were running for past 2 hours
when I made the overall gain slider zero
at:
  
  17197   Tue Oct 18 15:24:48 2022 TegaUpdateCDSRack 1X7 work proposal    
  17196   Mon Oct 17 22:27:25 2022 ranaUpdateBHDBH55 RF output amplified1) please remember to follow the loading
and power up instructions to avoid destroying
our low noise RF amplifiers. Its not as easy
  
  17195   Mon Oct 17 20:04:16 2022 AnchalUpdateBHDBH55 RF output amplified[Radhika, Anchal]

We have added an RF amplifier to
the output of BH55. See the MICH signal on
 BH55_RF_Amp_Working.pngrn_image_picker_lib_temp_1b072d08-3780-4b1d-9325-5795ed099d3d.jpgrn_image_picker_lib_temp_9d7ed3c0-7ff0-4ff7-9349-0211be397dc5.jpgrn_image_picker_lib_temp_05da14e1-eae0-4a84-8761-1c42b122cb1b.jpg 
  17194   Mon Oct 17 17:42:35 2022 JCHowToOPLEV TablesIMC Reflected beam sketchI sketched up a quick drawing with estimated
length for the IMC reflected beam. This includes
the distances and focal length. Distances
 Screenshot_2022-10-18_093033.png 
  17193   Mon Oct 17 11:57:27 2022 ChrisOmnistructureCDSTiming system monitoringI started a GPS timing monitor script,
/opt/rtcds/caltech/c1/Git/40m/scripts/cds/tempusTimingMon/tempusTimingMon.py,
which runs inside a docker container on optimus.
 timing.png 
  17192   Sat Oct 15 17:22:56 2022 ChrisUpdateOptimal ControlIMC alignment controller testing[Anchal, Radhika, Jamie, Chris]

We conducted a test of three alternative
controllers for the IMC pitch DOFs on Friday.
 180.png066.png202.png 
  17191   Fri Oct 14 17:04:28 2022 RadhikaUpdateBHDBH55 Q abnormality + fix[Yuta, Anchal, Radhika]

Yesterday we attempted to lock
MICH and BHD using the BH55_Q_ERR signal.
 IMG_3805.jpegIMG_3807.jpegBH55_IQDemodMeasuredDiff_1349737773.png 
  17190   Thu Oct 13 23:52:45 2022 KojiUpdateIMCIMC ASC: summary pages and notesThe output matrices have been calculated
on Aug 4, 2022 by me. [40m
ELOG 17060]
  
  17189   Thu Oct 13 23:25:22 2022 ranaUpdateIMCIMC ASC: summary pages and notesTega has kindly made a summary page for
the IMC WFS. Its in a tab on the usual
summary pages.
 Screen_Shot_2022-10-14_at_3.19.43_PM.png 
  17188   Thu Oct 13 19:06:42 2022 KojiUpdateLab OrganizationLab Cleanup 10/12/2022I have moved the following electronics
/ components to "Section Y10
beneath the tube"
  
  17187   Thu Oct 13 14:46:34 2022 JCUpdateLab OrganizationLab Cleanup 10/12/2022During Wednesday’s lab clean up,
we made a ton of progress in organization.
Our main focus was to tackle CDS debris from
 IMG_6356.JPGIMG_6358.JPG 
  17186   Wed Oct 12 18:18:16 2022 ranaUpdateASSModel ChangesAlthough we've usually used this empirical
way to run the alignment, I'd prefer
if we had an analytic / numerical model for
  
  17185   Wed Oct 12 14:01:23 2022 RadhikaUpdateASSModel Changes[Anchal, Radhika]

We proceeded with the TODO items
from [17166].
 YARM_ASS.png 
  17184   Tue Oct 11 16:52:42 2022 AnchalUpdateIOORenaming WFS channels to match LIGO site conventions[Tega, Anchal]

c1mcs and c1ioo models have been
updated to add new acquisition of data.
  
  17183   Tue Oct 11 11:27:58 2022 KojiUpdateCDSCDS Upgrade remaining issuesPerhaps 1PPS around the PSL was used for
the Rb standard to be locked to the GPS 1PPS.

If
  
  17182   Tue Oct 11 10:58:36 2022 ChrisUpdateCDSCDS Upgrade remaining issuesThe original fb1 now boots from its new
drive, which is installed in a fixed drive
bay and connected via SATA. There are no
 PXL_20221010_212415180.jpg 
  17181   Mon Oct 10 10:14:05 2022 ChrisUpdateCDSCDS Upgrade remaining issuesList of remaining tasks to iron out various
wrinkles with the upgrade:


Complete the upgrade on
 timingslip.pngadctimingglitch.png 
  17180   Mon Oct 10 00:05:24 2022 ChrisUpdateIOOIMC WFS / MC2 SUS glitchThanks for pointing out that EPICS data
collection (slow channels) was not working.
I started the service that collects these
  
  17179   Sun Oct 9 13:49:49 2022 KojiUpdateIOOIMC WFS / MC2 SUS glitchThe IMC and the IMC WFS kept running for
~2days. 👍

I wanted to look at the trand of
 Screen_Shot_2022-10-09_at_13.49.12.png 
  17178   Fri Oct 7 22:45:15 2022 AnchalUpdateCDSCDS Upgrade Status Update[Chris, Anchal, JC, Paco, Yuta]




  
  17177   Fri Oct 7 20:00:46 2022 KojiUpdateIOOIMC WFS / MC2 SUS glitchAfter the CDS upgrade team called for a
day (their work TBD), I took over the locked
IMC to check how it looked like.
 Screenshot_2022-10-07_19-59-45.png 
  17176   Thu Oct 6 18:50:57 2022 AnchalSummaryBHDBH55 meas diff angle estimation and LO phase lock attempts[Yuta, Paco, Anchal]

BH55 meas diff

We
estimated meas diff angle for BH55 today
  
  17175   Thu Oct 6 12:02:21 2022 AnchalUpdateCDSCDS Upgrade Plan[Chris, Anchal]

Chris and I discussed our plan
for CDS upgrade which amounts to moving new
  
  17174   Thu Oct 6 11:12:14 2022 AnchalUpdateBHDBH55 RFPD installation complete[Yuta, Paco, Anchal]

BH55 RFPD installation was still
not complete until yesterday because of a
  
  17173   Thu Oct 6 07:29:30 2022 ChrisUpdateComputersSuccessful takeover attempt with the new front ends[JC, Chris]

Last night’s CDS
upgrade attempt succeeded in taking over
  
  17172   Tue Oct 4 21:00:49 2022 ChrisUpdateComputersFailed takeover attempt with the new front ends[Jamie, JC, Chris]

Today we made a failed attempt
to take over the 40m hardware with the new
  
  17171   Mon Oct 3 15:19:05 2022 PacoUpdateBHDLO phase noise and control after violin mode filters[Anchal, Paco]

We started the day by taking a
spectrum of C1:HPC-LO_PHASE_IN1,
 filters_c1sus_lo1_lsc.pngBHDC_asd_act.pngboosted_lo_phase_control.png 
  17170   Mon Oct 3 13:11:22 2022 YehonathanUpdateBHDSome comparison of LO phase lock schemesI pushed a notebook and a Finesse model
for comparing different LO phase locking
schemes. Notebook is on https://git.ligo.org/40m/bhd/-/blob/master/controls/compare_LO_phase_locking_schemes.ipynb,
 MICH_sens_vs_LO_phase.pdfLO_phase_sens_vs_LO_phase_RF.pdfLO_phase_sens_vs_LO_phase_double_audio.pdf 
  17169   Mon Oct 3 08:35:59 2022 TegaUpdateIMCAdding IMC channels to frames for NN test[Rana]

For the upcoming NN test on the
IMC, we need to add some more channels to
 Screen_Shot_2022-09-30_at_9.52.39_AM.png 
  17168   Sat Oct 1 13:09:49 2022 AnchalUpdateIMCWFS turned onI turned on WFS on IMC at:

PDT: 2022-10-01 13:09:18.378404
PDT
  
  17167   Fri Sep 30 20:18:55 2022 PacoUpdateBHDLO phase noise with different actuation points[Paco, Koji]

We took lo phase noise spectra
actuating on the for different optics-- LO1,
 BHDC_asd_actuation_point.png 
  17166   Fri Sep 30 18:30:12 2022 AnchalUpdateASSModel ChangesI updated c1ass model today to use PR2
PR3 instead of TT1 TT2 for YARM ASS. This
required changes in c1su2 too. I have split
  
  17165   Thu Sep 29 18:01:14 2022 AnchalUpdateBHDBH55 LSC Model Updates - part IVMore model changes

c1lsc:


BH55_I and BH55_Q are now
being read at ADC_0_14 and ADC_0_15. The
  
  17164   Thu Sep 29 15:12:02 2022 JCUpdateComputersSetup the 6 new front-ends to boot off the FB1 clone[Jamie, Christopher, JC]

This morning we decided to label
the the fiber optic cables. While doing this,
  
ELOG V3.1.3-