40m QIL Cryo_Lab CTN SUS_Lab TCS_Lab OMC_Lab CRIME_Lab FEA ENG_Labs OptContFac Mariner WBEEShop
  40m Log, Page 137 of 341  Not logged in ELOG logo
ID Date Authorup Type Category Subject Text Attachments
  16152   Fri May 21 12:12:11 2021 PacoUpdateNoiseBudgetAUX PDH loop identification[Anchal, Paco]

We went into 40m to identify where
XARM PDH loop control elements are. We didn't
  
  16156   Mon May 24 10:19:54 2021 PacoUpdateGeneralZita IOO stripUpdated IOO.strip on Zita to show WFS2
pitch and yaw trends (C1:IOO-WFS2_PIY_OUT16
 Screenshot_from_2021-05-24_18-09-37.png24and25_05_2021_PEM_BS_10_30.png 
  16176   Wed Jun 2 17:50:50 2021 PacoUpdateEquipment loanBorrow red cartI borrowed the little red cart 🛒
to help clear the path for new optical tables
in B252 West Bridge. Will return once I am
 IMG_20210602_172858.jpg 
  16180   Thu Jun 3 17:49:46 2021 PacoUpdateEquipment loanBorrow red cartReturned today.




  
  16219   Tue Jun 22 16:52:28 2021 PacoUpdateSUSADC/Slow channels issuesAfter sliding the alignment bias around
and browsing through elog while searching
for "stuck" we concluded the ITMX
 shake_and_damp.png 
  16234   Thu Jul 1 11:37:50 2021 PacoUpdateGeneralrestarted c0rgaPhysically rebooted c0rga workstation after
failing to ssh into it (even as it was able
to ping into it...) the RGA seems to be off
  
  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).
 high_BW_TFs.pdf 
  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
 LossMeasurement_RawData.pdfYARM_loss_stats.pdfXARM_loss_stats.pdf 
  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
 MC2_trans_sum_2021-08-06_17-18-54.png 
  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
 TRX_noise_2021-08-25_17-40-55.pngTRX_TRY_power_spectra.pdf 
  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
 Screenshot_from_2021-08-26_10-09-50.pngTRXTRY_Spectra.pdf 
  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
 XARM_POX_OLTF.pdfXARM_POX_Coh.pdf 
  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
 2021-09-02_21-51-15.png 
  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
 VAC_2021-09-13_09-32-45.png 
  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
 SEIS_2021-09-14_17-33-12.png 
  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
 PRM_PIT_ACT_TF.pdfPRM_YAW_ACT_TF.pdfBS_PIT_ACT_TF.pdfBS_YAW_ACT_TF.pdf 
  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
 XARM_signal_asd.pdfXARM_demod_timeseries.pdfXARM_demod_asds.pdfXARM_cal_0921_timeseries.pdf 
  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
 BS_PRM_ANG_ACT_TF.pdf 
  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
 OLTF_Calibration_Scheme.jpgXARM_POX_Lock_Model_TF.pdfXARM_OLTF_Total_Model.pdfXARM_OLTF_55p511_Hz_timeseries.pdfGmag_55p511_Hz_ASD.pdf 
  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
 XARM_OLTF_Model_and_Meas.pdfGmag_ASD_nb_withTRX.pdf 
  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
 pcb_no_flush.jpg1U_assembly.jpgfourunits.jpg 
  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
 IMG_8749.JPGIMG_8750.JPG 
  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
 dc_fail.jpg 
  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
 PR3_roll_balance.pngPR3_magnet_height.pngFreeSwingingSpectra.pdfPXL_20220104_231742123.jpgPXL_20220104_232809203.jpg 
  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
 PXL_20220114_211249499.jpg 
  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
 PXL_20220119_012954365.jpgPXL_20220119_013003522.jpg 
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