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ID Datedown Author Type Category Subject Text Attachments
  17230   Mon Nov 7 08:36:10 2022 JCUpdateSUSIMC out of alignment -- f2A failure[Paco, JC]

We came in this morning and noted
the IMC was grossly misaligned, with 
  
  17229   Fri Nov 4 15:43:05 2022 JCUpdateLab OrganizationNew Toolbox OrganizationThe new tool box has came in! I have spent
serious time organizing these tools and making
it look pretty, so please take care of it!
 IMG_6405.JPG 
  17228   Thu Nov 3 20:07:01 2022 AnchalSummaryBHDAS1 coil balancing required[Anchal, Koji]

The LO phase lock that was achieved
lasts for a short time because as soon as
  
  17227   Thu Nov 3 17:36:00 2022 AnchalUpdateSUSF2A filters on MC1, MC2, and MC3 set to test at 1 am


  
  17226   Thu Nov 3 17:01:47 2022 ChrisUpdateCDSSLwebview fixedThe simulink webview generation cronjob
on megatron was not working, apparently due
to a matlab license problem. I switched it
  
  17225   Thu Nov 3 16:22:11 2022 AnchalUpdateSUSMC3 coil strengths balancedBalanced MC3 coil strengths using the
same method.

Final coil strengths found:
  
  17224   Thu Nov 3 16:00:58 2022 alexSummaryGeneralSensoray updatesI am currently working on getting the driver
reinstalled on Donatella for the sensoray.
An issue keeps arising that will not allow
  
  17223   Thu Nov 3 14:42:57 2022 AnchalUpdateSUSMC2 coil strengths balancedBalanced MC2 coil strengths using the
same method.

Final coil strengths found:
  
  17222   Thu Nov 3 14:00:29 2022 AnchalUpdateSUSMC1 coil strengths balancedI balanced the face coil strengths of MC1
using following steps:


At
  
  17221   Wed Nov 2 16:34:56 2022 PacoSummaryCalibrationSingle arm calibration run [Anchal, Paco]

We added a notch filter on ETMY
(the actuation point of the YARM control
 frac_adev_demod_ybeat.pdf 
  17220   Tue Nov 1 17:59:23 2022 AnchalUpdateSUSAdded F2A filters on MC1, MC2, and MC3I've cleared all old attempts on F2A
filters on MC1, MC2, and MC3, and added the
default F2A filter described in the last
  
  17219   Tue Nov 1 17:17:27 2022 AnchalUpdateSUSModified F2A filter design and trial on MC1After a quick discussion with Yuta, we
figured that the introduction of a finite
Q that Peter Fritschel does in this DCC doc
 20221101_MC1_F2A_Filters_Q_On_Both.pdf 
  17218   Tue Nov 1 15:41:18 2022 AnchalUpdateSUSF2A filter design and trial on MC1Following discussion in this elog thread
(40/6004),
I used the design of F2A (force to angle(pitch))
 20221101_MC1_F2A_Filters.pdfETMY_F2A_Filters_Already_There.pdfMC1_F2A_Test.png 
  17217   Mon Oct 31 21:04:43 2022 KojiUpdateASCWFS inspectionInspected the lab to see what we can do
about the IFO WFS:


WFS heads

1
  
  17216   Wed Oct 26 16:04:12 2022 PacoSummaryBHDLO phase control with RF + audio sidebands[Yuta, Paco]

Today
we again locked the LO phase with BH55 +
  
  17215   Wed Oct 26 10:28:05 2022 PacoUpdateIOOHEPA ON / WFS ONTurned HEPA ON this morning at 10:28 local
(pacific time) or gpstime
  
  17214   Tue Oct 25 22:24:46 2022 KojiUpdateIOOHEPA OFF / WFS OFFTurned HEPA OFF / Lab Lights OFF / WFS
Input Gain switched off for the IMC WFS signal
tests.
  
  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 
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