40m QIL Cryo_Lab CTN SUS_Lab CAML OMC_Lab CRIME_Lab FEA ENG_Labs OptContFac Mariner WBEEShop
  40m elog, Page 3 of 357  Not logged in ELOG logo
ID Date Author Type Category Subject Text Attachments
  17916   Mon Oct 23 22:35:53 2023 PacoUpdateLSCFPMI CARM with CM board[paco, yuta]

We achieved a ~23
  17915   Mon Oct 23 16:41:22 2023 KojiSummaryBHDBHD PlatformThanks, JC for putting the parts together!
I'll start collecting the instruments
necessary for the OMC mounting / locking.
  17914   Mon Oct 23 16:32:38 2023 yutaUpdateLSCPRMI 1f carrier locking recovered, but not so stable[Vittoria, Yuta]

  17913   Mon Oct 23 15:38:19 2023 KojiUpdateCDSDolphin Fencing Investigation / Full CDS crash / nodus reboot / recovered allThere should be a correct wrapper script
such that we don't need to do nonsense
like remembering the IP address and the port
  17912   Mon Oct 23 14:42:17 2023 JCSummaryBHDBHD PlatformToday, I spent majority of my time insterting
the Helicoils for the Platform Assembly,
D2100435. 181 Inserts to be exact.
  17911   Mon Oct 23 14:08:57 2023 JCUpdateCDSDolphin Fencing Investigation / Full CDS crash / nodus reboot / recovered allWe used this technique earlier and we came
across a mistake while we were following
the steps from the elog. (The Wiki is better,
  17910   Fri Oct 20 15:51:21 2023 JCSummaryBHDBHD PlatformThe BHD platform assembly is going well.
I have gotten majority of the Helicoils into
all of their components. The only Helicoils
  17909   Thu Oct 19 13:54:16 2023 PacoUpdateLSCFPMI locking and high BW CM board[Paco, yuta]

investigated the situation of the CM board
  17908   Thu Oct 19 07:14:44 2023 JCUpdateIOO Morning AlignmentBasic
Arm Alignment has been done

seemed to have railed overnight.

  17907   Wed Oct 18 21:21:58 2023 PacoUpdateLSCFPMI locking and high BW CM board[Paco, yuta]


- We recovered the FPMI lock after
  17906   Wed Oct 18 13:01:52 2023 JCSummaryDaily ProgressLab WiFi!!We
Now Have WiFi Through The Entire Lab!!

and I connected the new routers and expanded
  17905   Wed Oct 18 12:29:19 2023 PacoUpdateSUSOPLEV Whitening Board Fixed and installed (ETMX)[Murtaza, Paco, Radhika]

We got some LT1128s from downs
(Dean) to get this board up and running again.
  17904   Wed Oct 18 12:20:26 2023 JCUpdateFrequency noise measurementSpectrogram Using GWpy[JC]


I was able to make a spectrogram
  17903   Tue Oct 17 19:35:31 2023 RadhikaUpdateASSReducing XARM-ASS ErrorsI resumed work to
restore XARM ASS

I manually
  17902   Mon Oct 16 20:50:32 2023 PacoUpdateIOOsome IMC WFS tweaks: update - MC_TRANS +80dB FM5 back onSince the MC_TRANS_PIT and MC_TRANS_YAW
control signals were still small even though
the sum was ok, I found the C1:IOO-MC_TRANS_PIT/YAW
  17901   Mon Oct 16 19:37:12 2023 yutaUpdateLSCPRMI 1f carrier locking recovered, but not so stablePRMI
1f carrier locking using AS55_Q and REFL55_I
was recovered, but
  17900   Mon Oct 16 08:28:27 2023 JCUpdateVACN2 tripped and Vac lockedThe last N2 tank ran out this morning ~3:00am.
Since then the Vac system tripped and the
shutter closed. I had to head over to the
  17899   Fri Oct 13 08:42:14 2023 murtazaUpdateSUSOPLEV Whitening Board Missing (ETMX)[Yuta, Paco, Murtaza]


Chasing the excess noise in TRX,
  17898   Thu Oct 12 18:47:52 2023 yutaUpdateLSCALS DARM CARM locking successfulALS
DARM and CARM locked.
The procedure basically follows what
  17897   Wed Oct 11 22:57:11 2023 PacoUpdateALSOn the residual frequency dependence of the ALS DARM calibration with FPMI[Paco, Yuta]

Attachment #1 shows
tonights OOL ALS noises with the PSL hepa
  17896   Wed Oct 11 21:23:49 2023 yutaUpdateLSCFPMI locking restored after vertex coil driver upgrade[Murtaza, Vittoria, Paco, Yuta]

restored FPMI RF locking for the first time
  17895   Tue Oct 10 17:43:39 2023 MurtazaHowToComputer Scripts / Programsligocdsws - XQuartz Troubleshootligocdsws
is a docker with all the good stuff (cdutils,
  17894   Tue Oct 10 17:15:54 2023 MurtazaUpdateSUSPost-Vertex Coil Driver Upgrade Suspension CalibrationPost the vertex coil driver upgrade, we
need to make sure everything downstream is
working correctly. Starting with checking
  17893   Tue Oct 10 16:04:15 2023 ranaUpdateIOOsome IMC WFS tweaks: update - WFS still look OK   WFS-Controls.pdf 
  17892   Tue Oct 10 14:10:11 2023 PacoConfigurationLSCETMY actuation calibration using ALSY[Vittoria, Paco]

This work was done yesterday ~
8 PM. After we aligned YARM and locked using
  17891   Mon Oct 9 15:17:05 2023 ranaUpdateIOOsome IMC WFS tweaks
with WFS off, I use MC_ALIGN screen
to get erasonable power and better cenetering
on mc2 QPD
With good alignment,
  17890   Mon Oct 9 14:10:50 2023 rana, pacoUpdateIOOIFO ALIGNED (WITH SOME ISSUES)since the IMC alignement / rework from
Sep 26, the IMC WFS has not been working.
The outputs seem to be railing after a long
  17889   Sat Oct 7 21:39:29 2023 PacoSummaryCalibrationFSR measurement setupI've been meaning to attempt this
method to measure the arm cavity length
with negligible systematic error for calibration.
  17888   Fri Oct 6 13:51:15 2023 JCUpdateBHDPosts used for the BHD OFINot a fanatic of the   Screenshot_2023-10-06_153204.png 
  17887   Thu Oct 5 23:32:47 2023 KojiUpdateBHDPosts used for the BHD OFIThe BHD OFI path consists of a few optical
components: (Attachment 1)

HWP ROtator
  17886   Thu Oct 5 13:29:58 2023 yutaUpdateSUSActuator calibrations after vertex coil driver upgradeWe calibrated actuators for
the first time after the vertex coil driver
  17885   Wed Oct 4 19:33:23 2023 KojiUpdateBHDThe optical fiber for the BHD/OMC assembly long enoughThe optical fiber that Hiroki set up turned
out that long enough for the use in the new
HEPA optical bench. (Attachment 1)
  17884   Wed Oct 4 17:28:48 2023 KojiSummaryBHDBalance Mass LayoutI went to the Solidworks model of the ITMY
invac table and checked where the center
of mass is.
  17883   Wed Oct 4 10:36:03 2023 MurtazaUpdateSUSSmall Optic Suspension Simulation
The triple suspensions (mode cleaners:
PRM, SRM) at the Livingston site have measured
  17882   Mon Oct 2 17:17:46 2023 PacoSummaryDAQYEND and XEND acromagI pulled out the YEND acromag chassis to
check how a connection is made. I unplugged
it and then opened it without removing any
  17881   Mon Oct 2 15:05:33 2023 VittoriaSummaryPSLPMC Alignment[Rana, Vittoria]

At 3 pm, we did some PMC alignment,
and the transmission value went from 665
  Draft   Thu Sep 28 16:45:54 2023 MurtazaUpdate IFO ALIGNED (WITH SOME ISSUES)[Rana, Radhika, Murtaza]

WFS Loop Debugging

  17879   Thu Sep 28 12:43:02 2023 RadhikaUpdate IFO ALIGNED (WITH SOME ISSUES)While aligning today I realized the cavAlign
step sizes and step factors had not been
updated after the upgrade.
  17878   Thu Sep 28 11:30:13 2023 yutaUpdateSUSChecking suspension damping loop polarity conventions To further homogenize the suspensions,
we did the following changes.

 - Turned on DECIMATION in
  17877   Thu Sep 28 11:27:24 2023 RadhikaUpdateSUSPRM/SRM damping/alignmentPRM/SRM OSEM input

- I realized
  17876   Wed Sep 27 21:11:36 2023 yutaUpdateSUSChecking suspension damping loop polarity conventions [Paco, Yuta]

We checked the polarity of suspension
  17875   Wed Sep 27 14:01:11 2023 yutaUpdateSUSWhitening/dewhitening check at Yend[Paco, Yuta]

 We checked whitening and dewhitening
  17874   Tue Sep 26 14:07:00 2023 MurtazaUpdate IFO ALIGNED (WITH SOME ISSUES)[Paco, JC, Murtaza]


To fix the WFS loops, went through
  17873   Mon Sep 25 17:01:46 2023 MurtazaUpdate IFO ALIGNED (WITH SOME ISSUES)[JC, Paco, Radhika, Murtaza]


  17872   Mon Sep 25 15:32:57 2023 JCUpdateIOOIMC Alignment After C1Sus2 Crash This Morning[Paco, Murtaza, JC]

Fixed C1SUS2 Crash from this morning

  17871   Fri Sep 22 19:38:06 2023 MurtazaSummaryElectronicsVertex Electronics CDS UpdatePRM
  17870   Fri Sep 22 19:31:24 2023 KojiUpdateSUSFixed IMC/IFO alignment screensFixed IMC/IFO alignment screens  Screenshot_2023-09-23_02-28-42.pngScreenshot_2023-09-23_02-28-52.png 
  17869   Fri Sep 22 19:05:19 2023 KojiUpdateGeneralPower Outage Sept 21, 2023 ~9AMPumping configuration changed.
Now TP2 is backing TP1 and TP3 is pumping
  17868   Fri Sep 22 18:26:08 2023 RadhikaSummaryElectronicsVertex Electronics CDS Update[Koji, Radhika, Murtaza]

All upgraded suspensions
  17867   Fri Sep 22 16:20:25 2023 RadhikaSummaryElectronicsVertex Electronics CDS UpdateToday we tried to debug the unreasonable
OSEM readings (see previous ELOG)

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