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ID Date Author Typeup Category Subject Text Attachments
  14568   Wed Apr 24 17:39:15 2019 YehonathanSummaryLoss MeasurementBasic analysis of loss measurementMotivation


Getting myself familiar
with Python.
Characterize statistical
 LossMeasurementAnalysis.zipLossMeasurement_RawData.pdfLossMeasurement_Hist.pdfLossMeasurement_PSD.pdf 
  14598   Wed May 8 22:11:46 2019 ranaSummaryComputersnew laptop setup: ASIA - yum issues
setup controls user using K Thorne
LLO CDS offsite workstation instructions
modified
/etc/fstab ala pianosa to NFS mount disks
set
  
  14616   Fri May 17 10:12:07 2019 AnjaliSummaryEquipment loanBorrowed componentI borrowed one Marconi (2023 B) from
40 m lab to QIL lab.
  
  14618   Fri May 17 16:07:25 2019 gautamSummaryEquipment loanBorrowed componentZHL-3A (2 units) —-> QIL




  
  14624   Mon May 20 13:16:57 2019 gautamSummaryComputersnew laptop setup: ASIA - ndscope and diagguiFollowing instructions here,
I installed ndscope on this machine. DTT
still could not be be run from this machine,
  
  14725   Thu Jul 4 10:54:21 2019 KojiSummarySUSSuspension damping recovered, ITMX stuckSo Cal Earthquake. All suspension
watchdogs tripped. 

Tried to recover the OSEM damping. 
  
  14730   Fri Jul 5 23:28:52 2019 rana, kruthiSummarySUSETMX unstuck by shaking the stackWe unstuck ETMX by shaking the stack. Most
effective was to apply large periodic human
sized force to the north STACIS mounts.
  
  14736   Tue Jul 9 08:33:31 2019 gautamSummarySUSETMX PIT bias voltage changed by ~1VAfter this activity, the DC bias voltage
required on ETMX to restore good X arm cavity
alignment has changed by ~1.3 V. Assuming
  
  14744   Wed Jul 10 14:57:01 2019 KojiSummaryCDSChannel recipe for iscaux upgradeThe list of the iscaux channels
and pin assignments were posted to google
drive. 
 D990694-B.pdfD990543A1.PDF 
  14747   Thu Jul 11 12:42:35 2019 gautamSummaryCDSP2 interface boardI looked into the design of the P2 interface
board. The main difficulty here is geometric
- we have to somehow accommodate sufficient
 IMG_7728.JPG 
  14749   Thu Jul 11 13:08:36 2019 ChubSummaryCDSP2 interface boardIt's nice and compact, and the cost
of new 15-pin DSUB cables shouldn't be
a factor here.  What does the 15p cable
  
  14750   Thu Jul 11 13:09:22 2019 gautam SummaryCDSP2 interface boardit will connect to a 15 pin breakout board
in the Acromag chassis

  
  14754   Thu Jul 11 18:15:22 2019 gautamSummaryElectronicsPSL/IOO rack checkoutI looked at the PSL/IOO racks to check
for which boards, if any, require an additional
P2 interface, so that we can try and design
  
  14770   Thu Jul 18 00:51:52 2019 KojiSummaryCDSiscaux electronics modificationsAlong with the plan in ELOG
14744, the ISC PD interface and the whitening
filter board have been modificed. The ISC
 LSC_whitening2.jpgLSC_whitening.jpg 
  14775   Thu Jul 18 22:34:40 2019 KojiSummaryCDSiscaux electronics modificationsThe whitening filter modules have been
restored to the crates. The SMA cables have
been restored and fastened by a spanner.
  
  14785   Sat Jul 20 11:57:39 2019 gautamSummaryCDSP2 interface boardThe boards arrived. I soldered on a DIN96
connector, and tested that the goemetry will
work. It does 
 IMG_7773.JPG 
  14818   Tue Jul 30 20:11:12 2019 ranaSummaryIMCIMC ASC: thoughts and hopesOne of the
biggest challenges in LIGO is reducing the
alignment control noise.
  
  14829   Mon Aug 5 17:23:26 2019 gautamSummaryComputersWiFi Settings on asiaThe VEA laptop asia was configured to be
able to connect to too many WiFi networks
- it was getting conflicted in its default
  
  14877   Fri Sep 13 13:03:35 2019 KojiSummaryCDSDIN 96pin to DSUB37 adapter (single) ready for useThe PCB board of the adapter for DIN 96pin
to DSUB37 conversion (single DSUB version)
was delivered yesterday and I quickly soldered
 P_20190912_192109.jpg 
  14879   Mon Sep 16 09:11:37 2019 gautamSummaryCDSDIN 96pin to DSUB37 adapter (single) ready for useI installed 6 of these
in 1Y2. Three were for PD INTF #1-3, and
I used three more for the AS110, REFL11,
  
  14885   Mon Sep 16 20:22:19 2019 gautamSummaryCDSUpdate on the Acromag status
Jordan (new Engineer) and Chub
neatened out the cabling at 1Y2/1Y3 today.
After their work, I plugged in all the Dsubs
 acromagChecklist.pdf 
  14892   Tue Sep 17 23:43:34 2019 KojiSummaryCDSAcromag logic checkerFor the investigation of the latch logic
issue for the CARM CM board, I have made
the LED logic checkers with DB breakout boards.
 digital_checker.pdfIMG_8914.JPG 
  15082   Fri Dec 6 17:49:46 2019 ranaSummaryPEMJump test of seismometers: EX needs recenteringYehonathan,  Seismometers.pdfsrc.tgz 
  15083   Sun Dec 8 20:15:41 2019 ranaSummaryPEMJump test of seismometers: EX needs recenteringI have re-centered the EX (and EY) seismometers.
They are Guralp CMG40-T, and have no special
centering procedure except cycling the power
 seis_all_191208.pdf 
  15086   Mon Dec 9 13:08:24 2019 YehonathanSummaryPEMJump test of seismometers: EX needs recenteringI check the seismometers in the last 14
hours (Attached). Seems like the coherenece
is restored in the x direction.
 seis_191208.pdf 
  15093   Wed Dec 11 15:01:57 2019 JonSummaryPSLPMC cavity ringdown measurement[Jon, Yehonathan]

We carried out a set of cavity
ringdown measurements of the PMC. The 1/e
 IMG_0101.jpg 
  15119   Mon Jan 13 23:30:53 2020 YehonathanSummaryPSLChanges made since Gautam leftAs per Gautam's request, I list the
changes that were made since he left:

1. The AOM driver was connected
  
  15121   Tue Jan 14 20:17:09 2020 gautamSummaryGeneralIFO recoverySummary:

There was no light entering the
IFO. I worked on a few things to bring the
 DCerrors.png 
  15123   Wed Jan 15 10:04:19 2020 gautamSummaryGeneralPOX / POY locking restoredSingle arm locking using POX and POY has
been restored. After running the dither alignment
servos, the TRX/TRY levels are ~0.7. This
 singleArms.png 
  15201   Mon Feb 10 09:40:54 2020 Larry WallaceSummaryGeneralSolidWorks Computer Upgrade and Printer repairOn February 5, 2020, the Dell engineering
workstation located in the 40M lab, was
replaced with a newer Engineering workstation,
  
  15226   Wed Feb 26 21:43:48 2020 JonSummaryBHDProjected IFO noise budget, post-BHD upgradeTo supplement the material presented during
the BHD review, I've put together a projected
noise budget for the 40m. Note these are
 40m_phase_quad.pdf40m_aligo_comp.pdf40m_ampl_quad.pdfnoise_budget.tar 
  15228   Wed Feb 26 22:09:52 2020 gautamSummaryBHDProjected IFO noise budget, post-BHD upgradeThe quantum noise curves here are not correct.
c.f. amplitude quadrature noise
budget.
  
  15241   Mon Mar 2 23:49:03 2020 JonSummaryBHDProjected IFO noise budget, post-BHD upgradeUpdated noise budget curves, now computed
using the latest version of pygwinc. This
resolves the inconsistency between the gwinc
 40m_phase_quad.pdf40m_ampl_quad.pdf40m_aligo_comp.pdf 
  15244   Tue Mar 3 18:11:05 2020 JonSummaryBHDProjected IFO noise budget, post-BHD upgradeRevised noise estimates, correcting a couple
of factor of 2 and factor of pi errors found
in the coil driver noise calculation. Also
 40m_phase_quad.pdf40m_ampl_quad.pdf40m_aligo_comp.pdf 
  15256   Thu Mar 5 19:45:23 2020 JonSummaryPSLC1PSL in-situ test resultsWe've completed
almost all of the in-situ testing of the
c1psl channels. During this
 c1psl_feedthrough_wiring_-_By_Connector_(3).pdf 
  15266   Wed Mar 11 18:12:53 2020 gautamSummaryPSLWFS Demod board modifications[koji, gautam]

 D980233-B_Mar2020Mods.pdf 
  15300   Tue Apr 7 15:30:40 2020 JonSummaryNoiseBudget40m noise budget migrated to pygwincIn the past year, pygwinc has expanded
to support not just fundamental noise calculations (e.g.,
quantum, thermal) but also any number of
  
  15302   Mon Apr 13 16:51:49 2020 ranaSummaryDAQNODUS: rsyncd daemon / service set upI just now modified the /etc/rsyncd.conf
file as per Dan Kozak's instructions.
The old conf file is still there with the
  
  15313   Fri Apr 24 00:26:59 2020 ranaSummaryPEML.A. EQ from Tuesday night   April22-EQ.pdf 
  15325   Tue May 12 17:51:25 2020 ranaSummaryComputer Scripts / Programsupdated LESS syntax highlight on nodusapt install source-highlight

then modified bashrc to point to
/usr/share instead of /usr/bin
  
  15331   Thu May 14 00:47:55 2020 gautamSummaryComputer Scripts / Programspcdev1 added to authorized keys on nodusThis is to facilitate the summary page
config fines to be pulled from nodus in a
scripted way, without being asked for authentication.
  
  15374   Thu Jun 4 00:21:28 2020 KojiSummaryCOCITM spares and New PR3 mirrors transported to Downs for phasemap measurementGariLynn worked on the measurement of E1800089
mirrros.
  
  15456   Mon Jul 6 15:10:40 2020 JonSummaryBHD40m --> A+ BHD design analysisAs suggested last week, Hang and I have
reviewed the A+ BHD status
(DRD, CDD, and reviewers' comments) and
  
  15482   Wed Jul 15 17:46:05 2020 anchalSummaryALSNoise budget for ALS I started my attempt on noise budgeting
of ALS by going back to how Kiwamu did it
and adding as many sources as I could find
 ALS_nb.pdf 
  15496   Mon Jul 20 19:21:16 2020 anchalSummaryALSFew proposals for Voyager ALSI've added 4
proposed schemes for implementing ALS
in voyager. Major thing to figure out is
 VoyagerALSSchemes.pdf 
  15499   Thu Jul 23 15:58:24 2020 JonSummaryVACVacuum controls refurbishment planThis year we've struggled with vacuum
controls unreliability (e.g., spurious interlock
triggers) caused by decaying hardware. Here
  
  15501   Mon Jul 27 15:48:36 2020 JonSummaryVACVacuum parts orderedTo carry out the next steps of the vac
refurbishment plan [ELOG
15499], I've ordered parts necessary
  
  15566   Wed Sep 9 20:52:45 2020 ranaSummaryIOOwandering line in IMCsince the summary pages are working again,
I was clicking through and noticed that there's
a wandering peak in the whitened IMC spectrogram
  
  15587   Sat Sep 19 23:59:22 2020 anchalSummaryALSALS noise budget updateSetting the record straight

I
found out an error I did in copying some
control model values from Kiwamu's matlab
 ALS_nb_ExtraPoles.pdfALS_controls.yamlALS_nb_Kiwamus_Values.pdfALS_controls_Kiwamus_Values.yamlALS_simulink_model.svg 
  15589   Sun Sep 20 23:12:13 2020 ranaSummaryALSALS noise budget updateI think the digital loop in the ALS budget
is too optimistic. You have to include all
the digital delays and anti-aliasing filters
  
ELOG V3.1.3-