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New entries since:Wed Dec 31 16:00:00 1969
ID Dateup Author Type Category Subject Text Attachments
  16849   Thu May 12 20:11:18 2022 AnchalUpdateBHDBHDBS Output beams steered out to ITMY tableI successfully steered out the two output
beams from BHD BS to ITMY table today. This
required significant changes on the table,
 signal-2022-05-12-201844.jpeg 
  16850   Thu May 12 20:24:29 2022 yutaUpdateBHDPOX and POY investigation[Anchal, Yuta]

We checked POX and POY RF signal chains
 POY.JPG 
  16851   Fri May 13 14:26:00 2022 JCUpdateAlignmentLO2 Beam[Yehonathan, JC]

Yehonathan and I attempted to align
the LO2 beam today through the BS chamber
  
  16852   Fri May 13 18:42:13 2022 PacoUpdateAlignmentITMX and ITMY sat amp failures[Yuta, Anchal, Paco]

As described briefly by JC, there
were multiple failure modes going during
  
  16853   Sat May 14 08:36:03 2022 ChrisUpdateDAQDAQ troubleshootingI heard a rumor about a DAQ problem at
the 40m.

To investigate, I tried retrieving
  
  16854   Mon May 16 10:49:01 2022 AnchalUpdateDAQDAQ troubleshooting[Anchal, Paco, JC]

Thanks Chris for the fix. We are
able to access the testpoints now but we
  
  16855   Mon May 16 12:59:27 2022 ChrisUpdateDAQDAQ troubleshootingIt looks like the RFM problem started a
little after 2am on Saturday morning (attachment
1). It’s subsequent to what I did,
 timeseries.pngerr.png 
  16856   Mon May 16 13:22:59 2022 yutaUpdateBHDREFL and AS paths aligned at AP tableAfter Xarm and Yarm were aligned by Anchal
et al, I aligned AS and REFL path
in the AP table.
 REFLPOP.JPGPOPAS.JPG 
  16857   Mon May 16 14:46:35 2022 TommyUpdateElectronicsRFSoC MTS WorkWe followed the manual's guide for
setting up MTS to sync on external signal.
In the xrfdc package, we update the RFdc
  
  16858   Mon May 16 16:13:01 2022 YehonathanUpdateBHDInitial BHD modeling: Damped suspension modelI was finally able to set up a stable suspension
model with the help of Yuta and I'm now
ready to start doing some MICH noise
 Damped_SUS.pngETMY_SUSPOS_GOL.pdfSUS_Response.png 
  16859   Mon May 16 19:14:17 2022 AnchalUpdateBHDCamera set on AS path and BHDBS output path[Anchal, Paco, Yuta]


We aligned AS path avoiding
any clipping to the AP table where we setup
  
  16860   Tue May 17 18:43:38 2022 AnchalUpdateBHDPlaced SRM in ITMY Chamber[Anchal, Paco, Yuta]

SRM Placement


SRM
was moved from its parked location to the
  
  16861   Wed May 18 08:30:29 2022 PacoUpdateBHDSRM OpLev[Paco]

The SRM Oplev injection and detection
paths interfere heavily with the POY11. Due
  
  16862   Wed May 18 09:02:52 2022 AnchalUpdateBHDWFS1 PD centeredI centered WFS1 PD so that IMC WFS Servo
does not go out of range.

 
  
  16863   Wed May 18 17:23:15 2022 AnchalUpdateBHDPlaced PRM in BS Chamber[Anchal, Paco, Yuta, JC]

SRM Oplev setup


We
setup SRM oplev path for the aligned position
  
  16864   Thu May 19 08:51:40 2022 PacoUpdateBHDSRM OpLev[Paco, Ian]

After agreement from Yuta/Anchal,
I moved POYM1 yaw to clear the aforementioned
  
  16865   Thu May 19 18:56:08 2022 yutaUpdateBHDCurrent OSEM sensor values with all the suspensions alignedCurrent OSEM sensor values with all the
suspensions aligned are attached.
For 'BS','ITMX','ETMX','ITMY','ETMY','PRM','SRM','LO1','LO2',
 OSEMS.txt 
  16866   Thu May 19 19:05:59 2022 AnchalUpdateBHDBS Chamber all work finished, BHD path setup[Anchal, Paco, Yuta]

BS Oplev Path


The
changed position of PRM (40m/16863)
  
  16867   Fri May 20 12:42:23 2022 TegaUpdateVACDoor installation on the end stations[JC, Tega, Chub]

Today we installed the 200 lbs
doors on the end station chambers.
  
  16868   Fri May 20 20:03:48 2022 PacoUpdateBHDITMY chamber work finished - LO and AS overlapped[Paco, Anchal, Yuta]

Today, in short we:


Recovered alignment of
 Screenshot_2022-05-20_20-38-25.pngOSEMs.txt 
  16869   Mon May 23 13:16:59 2022 PacoUpdateBHDEnd of vent - checks[Paco, Yuta]

Prep for closing and pump down.


Aligned IFO to maximize
 OSEMs20220523.txtScreenshot_2022-05-23_13-24-06_IFOaligned_GTRY_still_clipping_but_less.pngPR3position.JPG 
  16870   Tue May 24 10:37:09 2022 TegaUpdateVACadded FRG channels to slow channel ini file[Vacuum gauge sensors]

Paco informed me that the FRG sensor
EPICS channels are not available on dataviewer,
  
  16871   Tue May 24 11:04:53 2022 JCUpdateVACBeginning Pumpdown[JC, Jordan, Paco, Chub]

We began with the pumpdown this
morning. We started with the annulus volume
 PUMPDOWN-2022-05-24_16-57-59.pngC1VAC_Screenshot_2022-05-24_16-59-27.png 
  16872   Tue May 24 15:21:13 2022 AnchalUpdateBHDFreeswing tests of new SOS startedI modified the script freeSwing.py
to use damping loop output switches to free
the optic instead of watchdog or coil output
  
  16873   Wed May 25 16:38:27 2022 yutaUpdateSUSSuspensions quick health check[JC, Yuta]

We did a quick health check of
suspesions after the pump down.
 Screenshot_2022-05-25_16-46-13.pngOSEMcheck.JPG 
  16874   Wed May 25 16:56:44 2022 PacoConfigurationBHDIFO recovery - IMC alignment[Yuta, Paco]

We aligned IMC to recover the IFO
progressively. First step was to center the
  
  16875   Wed May 25 17:34:47 2022 yutaConfigurationBHDIFO recovery - IFO alignmentIFO aligned to maximize flashings, except
for GRY and LO-AS.
 Screenshot_2022-05-25_17-47-57.png 
  16876   Thu May 26 15:55:10 2022 TommyUpdateElectronicsRFSoC Power SpectrumFinished building power spectrum analyzer
for the RFSoC. There are two things that
I would like to address down the road. First
 Screen_Shot_2022-06-02_at_2.51.23_PM.png 
  16877   Thu May 26 19:55:43 2022 yutaConfigurationBHDOplevs centered, BHD DCPDs are now online[Paco, Yuta]

We have aligned the IFO (except
for LO-AS and GRY), and centered
 elog_1Y2.JPGelog_BHD.JPGelog_box.JPGScreenshot_2022-05-26_17-37-27_IFOaligned_OplevCentered.pngScreenshot_2022-05-26_20-35-02.png 
  16878   Fri May 27 12:15:30 2022 JCUpdateElectronicsCRT TV / Monitor 6[Yehonathan, Paco, Yuta, JC]

As we were cleaning up this morning,
we heard a high pitch sound that turned into
  
  16879   Fri May 27 15:53:17 2022 TommyUpdateElectronicsRFSoC MTS WorkWith some help from the forums, we printed
the status of the DAC MTS sync and were able
to determined that our board's vivado
  
  16880   Fri May 27 17:45:53 2022 yutaConfigurationBHDBHD camera installed, GRY aligned[JC, Paco, Yuta]

After the IFO recovery (elog 40m/16881),
  
  16881   Fri May 27 17:46:48 2022 PacoSummaryComputersCDS upgrade visit, downfall and rise of c1lsc models[Paco, Anchal-remote, Yuta, JC]

Sometime around noon today, right
after cds upgrade planning tour, c1lsc FE
  
  16882   Tue May 31 14:44:02 2022 JCUpdateElectronicsCRT TV / Monitor 6[Paco, JC]

Paco and I fixed the ethernet cable
which was hanging. We stopped models c1x07
  
  16883   Tue May 31 17:30:01 2022 YehonathanUpdateBHDGreen shutters fixed[Paco, Yehonathan]

We fixed the slow control over
the green beam shutters.
  
  16884   Wed Jun 1 11:56:28 2022 yutaUpdateALSShutter driver for GRY replaced[JC, Yuta]

We replaced a shutter driver for GRY
 Screenshot_2022-06-01_12-01-53.png 
  16885   Wed Jun 1 12:56:44 2022 PacoSummaryElectronicsSTEMlab 125 handout[Paco, Deeksha]

Yesterday I handed Deeksha a red
pitaya (stemlab 125 - 10) to begin her summer
  
  16886   Thu Jun 2 20:05:37 2022 yutaConfigurationPSLIMC input power recovered to 1W, some alignment works[Paco, Yuta]

We have
 Before.JPGAfter.JPG 
  16887   Fri Jun 3 12:13:58 2022 PacoConfigurationCDSFix RFM channels [Paco, Yuta]

We tried fixing the issue of LSC_TRY
and LSC_TRX channels not working. We first
 SoGreen.png 
  16888   Fri Jun 3 15:22:51 2022 yutaUpdateLSCBoth arms locked with POY/POX, IR beam centered on TMs with ASS[JC, Paco, Yuta]

We locked both Y and X arms with POY11
 IRBeamsOnTMs.JPGScreenshot_2022-06-03_15-03-51.png 
  16889   Fri Jun 3 17:42:50 2022 yutaUpdateLSCMICH locks with AS55_QAS path at AP table as re-aligned and confirmed
that MICH can be locked with AS55 Q.
 Screenshot_2022-06-03_17-41-55.png 
  16890   Sun Jun 5 19:46:40 2022 PacoUpdateLSCFixed IMC Trans sum issue[Paco]

Fixed the issue below:

  
  16891   Mon Jun 6 09:37:16 2022 JCUpdateSUSInMatCalc[Paco, JC]

Paco and I attempted to calculate
the input matrices from May 24, 2022, but
  
  16892   Mon Jun 6 13:35:11 2022 PacoUpdateLSCFirst calibrated spectra of MICH at AS55 Q[Paco, Yuta]

On the topic of high AS55_Q RFPD
offset, it seems it stems from a small residual
 Screenshot_2022-06-06_17-30-16_MICHOLTF.pngCalibrated_MICH_ERR.pdf 
  16893   Mon Jun 6 16:09:23 2022 ranaConfigurationDetCharSummary Pages: seis BLRMSI updated the config file c1pem.ini in
/users/public_html/detcharsummary/ConfigFiles,
and commited it so I hope it works, but I
  
  16894   Mon Jun 6 21:01:22 2022 yutaUpdateIMCMC1 OSEM sensor sign flipped, MC1/2/3 free swinging overnight for inmat diagonalization[Tomislav Andric, Rana, Yuta]

We put -1 to MC1 OSEM sensor gains
and re-tuned MC1 damping.
 Screenshot_2022-06-06_21-05-28.png 
  16895   Mon Jun 6 22:08:55 2022 KojiUpdateIMCMC1 OSEM sensor sign flipped, MC1/2/3 free swinging overnight for inmat diagonalizationNote that MC1 has a new style sat amp because
the old one collapsed. The sign flip might
have been the result of the replacement
  
  16896   Tue Jun 7 17:26:21 2022 yutaUpdateSUSITMY ULCOIL mystery not solved[Paco, Yuta]

We investigated the ITMY ULCOIL
issue (40m/16873).
 ULCoilInductance.JPGULCoilResistance.JPGWrongSetting.JPG 
  16897   Tue Jun 7 18:32:46 2022 DeekshaUpdateElectronicsNoise Budgeting ADC (of redpitaya)Made plots on i/p noise of redpitaya .
Need to reconsider sampling frequency (to
improve plot at lower freq)
 ch1_0.5V.pngch2_0.0V.png 
  16898   Tue Jun 7 19:13:12 2022 yutaUpdateSUSAgreement on suspension damping loop polarity conventionsAnchal, Paco and I agreed to follow
the polarity conventions below for suspension
damping loops.
 NoteBeforeChanges.JPG 
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