40m QIL Cryo_Lab CTN SUS_Lab TCS_Lab OMC_Lab CRIME_Lab FEA ENG_Labs OptContFac Mariner WBEEShop
  40m Log, Page 139 of 344  Not logged in ELOG logo
ID Date Authorup Type Category Subject Text Attachments
  16248   Thu Jul 15 14:25:48 2021 PacoUpdateLSCCM board[gautam, paco]

We tested the CM board by implementing
the high bandwidth IR lock (single arm).
  16254   Thu Jul 22 16:06:10 2021 PacoUpdateLoss MeasurementLoss measurement[yehonathan, anchal, paco, gautam]

We concluded estimating the XARM
and YARM losses. The hardware configuration
  16257   Mon Jul 26 17:34:23 2021 PacoUpdateLoss MeasurementLoss measurement[gautam, yehonathan, paco]

We went back to the loss data from
last week and more carefully estimated the
  16266   Thu Jul 29 14:51:39 2021 PacoUpdateOptical LeversRecenter OpLevs[yehonathan, anchal, paco]

Yesterday around 9:30 pm, we centered
the BS, ITMY, ETMY, ITMX and ETMX oplevs
  16267   Mon Aug 2 16:18:23 2021 PacoUpdateASCAS WFS MICH commissioning[anchal, paco]

We picked up AS WFS comissioning
for daytime work as suggested by gautam.
  16272   Fri Aug 6 17:10:19 2021 PacoUpdateIMCMC rollercoaster[anchal, yehonatan, paco]

For whatever reason (i.e. we don't
really know) the MC unlocked into a weird
  16275   Wed Aug 11 11:35:36 2021 PacoUpdateLSCPRMI MICH orthogonality plan[yehonathan, paco]

Yesterday we discussed a bit about
working on the PRMI sensing matrix.
  16277   Thu Aug 12 11:04:27 2021 PacoUpdateGeneralPSL shutter was closed this morningThu Aug 12 11:04:42 2021 Arrived to find
the PSL shutter closed. Why? Who? When? How?
No elog, no fun. I opened it, IMC is now
  16280   Mon Aug 16 23:30:34 2021 PacoUpdateCDSAS WFS commissioning; restarting models[koji, ian, tega, paco]

With the remote/local assistance
of Tega/Ian last friday I made changes on
  16287   Mon Aug 23 10:17:21 2021 PacoSummaryComputerssystem reboot glitch[paco]

At 09:34 PST I noted a glitch in
the controls room as the machines went down
  16293   Tue Aug 24 18:11:27 2021 PacoUpdateGeneralTime synchronization not really workingtl;dr: NTP servers and clients
were never synchronized, are not synchronizing
even with ntp... nodus is synchronized but
  16298   Wed Aug 25 17:31:30 2021 PacoUpdateCDSFB is writing the frames with a year old date[paco, tega, koji]

After invaluable assistance from
Jamie in fixing this yearly offset in the
  16300   Thu Aug 26 10:10:44 2021 PacoUpdateCDSFB is writing the frames with a year old date[paco, ]

We went over the X end to check
what was going on with the TRX signal. We
  16303   Mon Aug 30 17:49:43 2021 PacoSummaryLSCXARM POX OLTFUsed diaggui to get OLTF in preparation
for optimal system identification / calibration.
The excitation was injected at the control
  16307   Thu Sep 2 17:53:15 2021 PacoSummaryComputerschiara down, vac interlock tripped[paco, koji, tega, ian]

Today in the morning the name server
/ network file system running in chiara failed.
  16313   Thu Sep 2 21:49:03 2021 PacoSummaryComputerschiara down, vac interlock tripped[tega, paco]

We found the files that took excess
space in the chiara filesystem (see Attachment
  16320   Mon Sep 13 09:15:15 2021 PacoUpdateLSCMC unlocked?Came in at ~ 9 PT this morning to find
the IFO "down". The IMC had lost
its lock ~ 6 hours before, so at about 03:00
  16329   Tue Sep 14 17:19:38 2021 PacoSummaryPEMExcess seismic noise in 0.1 - 0.3 Hz bandFor the past couple of days the 0.1 to
0.3 Hz RMS seismic noise along BS-X has increased.
Attachment 1 shows the hour trend in the
  16343   Mon Sep 20 12:20:31 2021 PacoSummarySUSPRM and BS Angular Actuation transfer function magnitude measurements[yehonathan, paco, anchal]

We attempted to find any symptoms
for actuation problems in the PRMI configuration
  16352   Tue Sep 21 11:13:01 2021 PacoSummaryCalibrationXARM calibration noiseHere are some plots from analyzing the
C1:LSC-XARM calibration. The experiment is
done with the XARM (POX) locked, a single
  16358   Thu Sep 23 15:29:11 2021 PacoSummarySUSPRM and BS Angular Actuation transfer function magnitude measurements[Anchal, Paco]

We had a second go at this with
an increased number of averages (from 10
  16363   Tue Sep 28 16:31:52 2021 PacoSummaryCalibrationXARM OLTF (calibration) at 55.511 Hz[anchal, paco]

Here is a demonstration of the
methods leading to the single (X)arm calibration
  16369   Thu Sep 30 18:04:31 2021 PacoSummaryCalibrationXARM OLTF (calibration) with three lines[anchal, paco]

We repeated the same procedure
as before, but with 3 different lines at
  16377   Mon Oct 4 18:35:12 2021 PacoUpdateElectronicsSatellite amp box adapters[Paco]

I have finished assembling the
1U adapters from 8 to 5 DB9 conn. for the
  16383   Tue Oct 5 20:04:22 2021 PacoSummarySUSPRM and BS Angular Actuation transfer function magnitude measurements[Paco, Rana]

We had a look at the BS actuation.
Along the way we created a couple of issues
  16429   Tue Oct 26 16:56:22 2021 PacoSummaryBHDPart I of BHR upgrade - Locked PMC and IMC[Paco, Ian]

We opened
  16437   Thu Oct 28 16:32:32 2021 PacoSummaryBHDPart IV of BHR upgrade - Removal of BSC eastern optics[Ian, Paco, Anchal]

We turned off the BSC oplev laser
by turning the key counterclockwise. Ian
  16444   Tue Nov 2 16:42:00 2021 PacoSummaryBHD1Y1 rack work[paco, ian]

After the new 1Y0 rack was placed
near the 1Y1 rack by Chub and Anchal, today
  16453   Mon Nov 8 10:13:52 2021 PacoSummaryBHD1Y1 rack work; Sorensens removed[Paco, Chub]

Removed all sorensen power supplies
from this rack except for 12 VDC one; that
  16455   Mon Nov 8 15:29:05 2021 PacoSummaryBHD1Y1 rack work; New power for cameras[Paco, Anchal]

In reference to Koji's concern
(see previous elog), we have completely removed
  16488   Tue Nov 30 17:11:06 2021 PacoUpdateGeneralMoved white rack to 1X3.5[Paco, Ian, Tega]

We moved the white rack (formerly
unused along the YARM) to a position between
  16499   Fri Dec 10 15:59:23 2021 PacoUpdateBHDFinished Coil driver (even serial number) units tests[Paco, Anchal]

We have completed modifications
and testing of the HAM Coil driver D1100687
  16506   Tue Dec 14 19:29:42 2021 PacoUpdateBHD1Y0 rack work for LO1[Paco]

Two coil drivers have been installed
on 1Y0 (slots 6, 7, for LO1 SOS). All connections
  16507   Wed Dec 15 13:57:59 2021 PacoUpdateComputersupgraded ubuntu on zita[Paco]

Upgraded zita's ubuntu and
restarted the striptool script.
  16539   Mon Jan 3 12:05:08 2022 PacoUpdateBHD1Y0 rack work for LO2 AS1 AS4[Paco, Anchal]

Continue working on 1Y0. Added
coil drivers for LO2, AS1, AS4. Anchal made
  16540   Mon Jan 3 16:46:41 2022 PacoUpdateBHD1Y1 rack work for SR2, PR2, PR3[Paco, Anchal]

Continued working on 1Y1 rack.
Populated the 6 coil drivers, made all connections
  16542   Tue Jan 4 18:27:23 2022 PacoUpdateBHDSOS assembly -- PR3[yehonathan, paco, anchal]

We continue suspending PR3 today.
Yehonathan and Paco suspended the thick optic
  16559   Sat Jan 8 16:01:42 2022 PacoSummaryBHDPart IX of BHR upgrade - Placed LO2 filtersAdded input filters, input matrix, damping
filters, output matrix, coil filters, and
copy the state over from ITMX into LO2
  16563   Mon Jan 10 15:45:55 2022 PacoUpdateElectronicsITMY feedthroughs and in-vac cables installed - part IThe ITMY 10" flange with 10 DSUB-25
feedthroughs has been installed with the
cables connected at the in-vac side. 
  16569   Tue Jan 11 10:23:18 2022 PacoUpdateElectronicsITMY feedthroughs and in-vac cables installed - part II[Paco, Chub]

The ITMY 10" flange with 4
DSUB-25 feedthroughs has been installed with
  16574   Tue Jan 11 14:21:53 2022 PacoUpdateElectronicsBS feedthroughs and in-vac cables installed[Paco, Yehonathan, Chub]

The BS chamber 10" flange
with 4 DSUB-25 feedthroughs has been installed
  16588   Fri Jan 14 14:04:51 2022 PacoUpdateElectronicsRFSoC 2x2 board arrivedThe Xilinx RFSoC 2x2 board arrived right
before the winter break, so this is kind
of an overdue elog. I unboxed it, it came
  16591   Tue Jan 18 14:26:09 2022 PacoSummaryBHDPart IX of BHR upgrade - Placed remaining filters SR2, PR3, PR2[Anchal, Paco]

Added input filters, input matrix,
damping filters, output matrix, coil filters,
  16592   Tue Jan 18 15:19:49 2022 PacoSummaryBHDPart IV of BHR upgrade - Replaced old SR3 with SOS SR2. OSEM tuning attemtped.[Tega, Anchal, Paco]

We started working on SR2 installation.
Preliminary work involved
  16596   Wed Jan 19 12:56:52 2022 PacoSummaryBHDAS4 OSEMs installation[Paco, Tega, Anchal]

Today, we started work on AS4 SOS
by checking the OSEM and cable. Swapping
  16604   Thu Jan 20 16:42:55 2022 PacoUpdateBHDAS4 OSEMs installation - part 2[Paco]

Turns out, the shifting was likely
due to the table level. Because I didn't
  16620   Mon Jan 24 21:18:40 2022 PacoSummaryBHDPart IX of BHR upgrade - AS1 placed and OSEM tuned[Paco]

AS1 was installed in the ITMY chamber
today. For this I moved AS4 to its nominal
  16625   Thu Jan 27 08:27:34 2022 PacoSummaryBHDPart IX of BHR upgrade - AS1 inspection and correction[Paco]

This morning, I went into ITMY
chamber to inspect AS1 after the free swinging
  16628   Thu Jan 27 18:03:36 2022 PacoSummaryBHDPart III of BHR upgrade - Install PR2, balance, and attempt OSEM tuning[Paco, Anchal, Tega]

After installing the short OSEMs
into PR2, we moved it into ITMX Chamber.
  16630   Fri Jan 28 10:37:59 2022 PacoSummaryBHDPart III of BHR upgrade - PR2 OSEM finalized, reinsall LO1 OSEMs[Paco]

Thanks to Koji's hotfix on
the PR2 SatAmp box last evening, this morning
ELOG V3.1.3-