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  40m Log, Page 18 of 339  Not logged in ELOG logo
ID Date Authorup Type Category Subject Text Attachments
  16445   Tue Nov 2 18:54:41 2021 Anchal, PacoUpdateBHDOptical fibres laid for BHD upgradeWe successfully laid down all required
optical fibre fiber cables from 1X4-1X7
region to 1Y1-1Y3 region today. This includes
  
  16228   Tue Jun 29 17:42:06 2021 Anchal, Paco, GautamSummaryLSCMICH locking tutorial with GautamToday we went through LSC locking mechanics
with Gautam and as a "Hello World"
example, worked on locking michelson cavity.
  
  16237   Fri Jul 2 12:42:56 2021 Anchal, Paco, GautamSummaryLSCsnap file changed for MICHWe corrected the MICH locking snap file
C1configure_MI.req and saved an updated C1configure_MI.snap.
Now the 'Restore MICH' script in
  
  16239   Tue Jul 6 16:35:04 2021 Anchal, Paco, GautamUpdateIOORestored MCWe found that megatron is unable to properly
run scripts/MC/WFS/mcwfsoff and scripts/MC/WFS/mcwfson
scripts. It fails cdsutils commands due to
  
  16241   Thu Jul 8 11:20:38 2021 Anchal, Paco, GautamSummaryLSCPRFPMI locking attemptsLast night Gautam walked us through the
algorithm used to lock PRFPMI. We tried it
several times with the PSL HEPA filter off
  
  16112   Mon May 3 17:28:58 2021 Anchal, Paco, RanaUpdateLSCIMC WFS noise contribution in arm cavity length noiseRana came and helped us figure us where
to inject the noise. Following are the characteristics
of the test we did:
 excitationoftheMCanglessothatwecanseesomethingdotpng.pngexcitationoftheMCanglessothatwecanseesomethingdotpngbutthistimeitsMC2.png 
  16190   Mon Jun 7 15:37:01 2021 Anchal, Paco, YehonathanSummaryCamerasMon 7 in Control Room DiedWe found Mon7 in control room dead today
afternoon. It's front power on green
light is not lighting up. All other monitors
  
  10130   Sat Jul 5 04:18:45 2014 AndresUpdate40m Xend Table upgradeAdding Two Lenses After the Second Steering Mirror in Order Two Increase the Gouy Phase Difference Between the Sterring MirrorsI had been working on the Xend table optical
layout update. Since the two steering mirrors
in the Xend green are too close to each,
 7x 
  10191   Sun Jul 13 17:06:35 2014 AndresUpdate40m Xend Table upgradeXarm Table Upgrade Calculation and Diagrams of possible new table layout Current Mode Matching
and Gouy Phase Between Steering Mirrors
 CurrentOpticalLayout.pngNewSetUp.PNGAlaModeSolutionplots.pngEntireScaleRangeAlaModeSolution.pngNewXarmOptimizationFromFaraday.m 
  10195   Mon Jul 14 16:19:41 2014 AndresUpdate40m Xend Table upgradeTook the measurement for the Mode Matching Nick
and I measured the reflected power of the
green light in locked and unlocked. I'm working
  
  10207   Tue Jul 15 22:23:51 2014 AndresUpdate40m Xend Table upgradeScan the Xarm for the mode matching Nick and I with the help of Jenne
scan the green light when the cavity is unlocked.
Nick placed a Beam dump on the IR so that
  
  10226   Thu Jul 17 02:57:32 2014 AndresUpdate40m Xend Table upgradeFInish Calculation on Current X-arm mode MatchingData and Calculation for the
Xarm Current Mode Matching
 RawDataForTheModeGreenScan.pngResultForModeMatching.pngDataAndCalculationOfModeMismatch.zip 
  10237   Fri Jul 18 16:52:56 2014 AndresUpdate40m Xend Table upgradeFInish Calculation on Current X-arm mode Matching

    

       
            
 OldAndNewSetupPlotsOfDisplacementAndAngleAtTheETM.pngOldSetUpDisplacementAndNewSetup.m.zip 
  10290   Tue Jul 29 20:14:08 2014 AndresUpdate40m Xend Table upgradeXarm Green steering mirror upgrade Xarm Green Steering Mirror Upgrade
Nick
and I did the upgrade for the green steering
mirror today. 
  
  10296   Wed Jul 30 10:16:54 2014 AndresUpdate40m Xend Table upgradeGreen Steering Mirror Upgrade completedGreen Steering Mirror Update
Yesterday,
Nick and I completed the green steering mirrors
upgrade. I attached the file that contained
 XarmUpgrade.pdfdWaistSize_dlensVsdWaistPosition_dlens.pngXarmNewOpticalSetup.PNG 
  10374   Wed Aug 13 10:50:04 2014 AndresUpdateIMCCalculation for the input mode cleaner  Calculation for the input mode
cleaner
I have been working on the
calculation for the input mode cleaner. I
 ModeCleanerSetup0.PNGalaModeModeCleanersolution.png 
  10384   Thu Aug 14 15:10:47 2014 AndresUpdateIMCCalculation for the input mode cleaner

    

       
            
 SolutionForTheModeCleanerSetup00.pngSolutionForTheModeCleanerSetup11.pngPossibleSetupForModeCleaner.PNGalaModeSolution.zip 
  10410   Tue Aug 19 21:40:44 2014 AndresUpdateIMCNew Optical Setup for the IMCIMC
Calculation and Setup
I have been working in the calculation
 11x 
  10427   Fri Aug 22 18:05:02 2014 AndresUpdateIMCUpgrade of the IMC WFSs for the reflection Upgrade of IMC Reflection Optical
Setup
Nick and I upgrade the IMC.
We move both WFSs and placed them facing
 ModeCleanerUpgrade.PNG 
  10101   Wed Jun 25 14:52:22 2014 Andres MedinaUpdateelogPlacing a lens between the steering mirrors and another lens between the second steering mirror and the cavity I was asked to calculate the lenses
that we need in order to obtained a Gouy
phase close to 90 degrees between the two
 SchematicForXendGreenGoingToTheCavity.pdf 
  75   Wed Nov 7 02:14:08 2007 AndreyBureaucracyIOOMore information about MC2 ringdownAs Tobin wrote two hours ago, we (Andrey,
Tobin, Robert) made a series of ringdown
measurements for MC2
 9x 
  130   Wed Nov 28 12:43:53 2007 AndreyBureaucracy Here was the PDF-file of my presentation
I was  making a report with powerpoint presentation
during that Wednesday's 40-m meeting.
  
  135   Wed Nov 28 19:02:41 2007 AndreyBureaucracyWIKI-40M UpdateNew WIKI-40M page describing Matlab Suspension Modeling
I created the WIKI-40m page with some details
about my today's talk on the 40-m lab meeting.
  
  151   Fri Nov 30 20:17:26 2007 AndreyConfigurationPEMAccelerometers and alum.plates for themAll 6 accelerometers which were located near
the ITMX are turned off and disconnected
from the power cords.
 Scheme_Aluminum_Piece-inches.pdf 
  168   Wed Dec 5 18:08:36 2007 AndreyUpdateASCOptical Lever laser for ETMX is installed
A new laser with \lambda=633nm has been intalled
and the mirror adjusted so that the signal
 DSC_0199.JPG 
  172   Wed Dec 5 23:19:03 2007 AndreyConfigurationPEMAccelerometers are turned on
All accelerometers have been turned on, as
Alan asked during Wednesday meeting.
 7x 
  174   Thu Dec 6 15:22:42 2007 AndreySummaryElectronicsPictures of the inside of He-Ne laser
Steve gave me an old "dead" He-Ne laser that
long time ago was used for ETMX optical lever.
 DSC_0226.JPGDSC_0228.JPG 
  176   Thu Dec 6 19:19:47 2007 AndreyConfigurationSUSSuspension damping Gain was restored
Suspension damping gain was disabled for
some reason (all the indicators in the most
  
  191   Thu Dec 13 23:56:02 2007 AndreyConfigurationComputer Scripts / ProgramsOvernight measurements
[COLOR=blue]After my disease[/COLOR] (fever,
vomitting, nose problem, overall weakness)
  
  194   Mon Dec 17 23:42:08 2007 AndreyConfigurationComputer Scripts / ProgramsOvernight measurements in X-arm
I am making overnight measurements this night
(from Monday to Tuesday) in XARM.
  
  195   Tue Dec 18 00:51:39 2007 AndreyUpdateComputer Scripts / ProgramsResults of Saturday overnight measurements
As I indicated in the previous e-log entry
(#194), I made overnight measurements in
 11x 
  198   Tue Dec 18 23:27:36 2007 AndreyConfigurationComputer Scripts / ProgramsNew overnight measurements (this night from Tue to Wed)
[COLOR=red]I am making overnight measurements
in XARM tonight.[/COLOR]
  
  199   Tue Dec 18 23:41:00 2007 AndreySummaryComputer Scripts / ProgramsResults of Mon/Tue overnight measurements (entry #194)
Here I inform our community about the results
of the measurements of RMS values in XARM
 12x 
  201   Wed Dec 19 15:51:00 2007 AndreyUpdateComputer Scripts / ProgramsDaytime measurements in XARM and their results
I was making measurements in XARM for three
different nights. All the results agree with
 11x 
  202   Wed Dec 19 16:07:37 2007 AndreySummaryComputer Scripts / ProgramsResults of overnight measurements Tue/Wed night (entry #198)
As indicated in ELOG entry 198, I was making
[COLOR=red]overnight measurements during
 11x 
  204   Wed Dec 19 20:28:27 2007 AndreyDAQPEMNames for all 6 accelerometers have been changed
I eventually [COLOR=red]changed the names
for all 6 accelerometers[/COLOR] (see my
  
  205   Thu Dec 20 02:04:09 2007 AndreyUpdateComputer Scripts / ProgramsNew overnight measurements in XARM and their results
I ran in the daytime/evening time my program,
changing the damping gains in suspension
 11x 
  208   Thu Dec 20 21:57:34 2007 AndreyUpdateComputer Scripts / ProgramsMeasurements in XARM today
Today at 2PM I started a program, it should
change the suspension gains in the interval
 Accelerom_ETMX.pngAccelerom_ITMX.png 
  209   Thu Dec 20 21:58:28 2007 AndreySummaryComputer Scripts / ProgramsResults for 2 previous XARM measurements have been added
I attached results (plots) of yesterday's
daytime and overnight measurements to the
  
  251   Mon Jan 21 23:30:03 2008 AndreyUpdateComputer Scripts / ProgramsMatlab Program for Q-factor measurements (XARM -> ITMX and ETMX)
Finally I overcame difficulties with adapting
Sonia's Matlab programs for XARM (Sonia's
 Example-ITMX_POS_40.png 
  256   Wed Jan 23 12:31:36 2008 AndreySummarySUSDissapointing Results of XARM optimization (PDF-file)
I attach a PDF-file which summarizes briefly
the results of measurements/calculations
 Sad_Results_XARM.pdf 
  260   Thu Jan 24 20:03:40 2008 AndreyConfigurationSUSChanges to Dataviewer channels (XARM)
1) [COLOR=blue]Good news.[/COLOR] I added
a chanel "C1:SUS-ETMX_POS" to Dataviewer.
  
  261   Thu Jan 24 22:10:49 2008 AndreyConfigurationComputer Scripts / ProgramsProblem with channels - help of Rana, Robert or Steve is needed
I definitely spoiled something (changes some
settings) by chaotically clicking those blue
  
  262   Thu Jan 24 22:52:18 2008 AndreyBureaucracyGeneralAnts around a dirty glass (David - please read!)
Dear coleagues,
  
  273   Sat Jan 26 02:34:34 2008 AndreyUpdateComputer Scripts / ProgramsOvernight Measuremts in XARM
I am running the program for measuring RMS
of peaks in XARM tonight. I just started
  
  281   Mon Jan 28 17:16:54 2008 AndreyConfigurationComputersMatlab libraries DO NOT WORK properly sometimes
Working in Matlab, I encountered at two different
times today the license distribution problem:
  
  286   Wed Jan 30 13:09:55 2008 AndreyUpdateSUSNew results for XARM (pdf)
See attachments: pdf-presentation with plots
in "true" axes Q_ETMX and Q_ITMX, and seismic
 New_Results_XARM.pdfAccel-Seismic_10AM.pdf 
  320   Fri Feb 15 22:16:04 2008 AndreyUpdateComputersMATLAB is not working: "Licence checkout failed"
For some unknown to me reason, 
  
  323   Tue Feb 19 15:21:47 2008 AndreyUpdateSUSEarthquake tripped watchdogs in ETMY, ITMY
According to the web-page http://earthquake.usgs.gov/eqcenter/recenteqsus/Quakes/ci14351140.php
,
  
  330   Fri Feb 22 02:51:20 2008 AndreyUpdatePEMAccelerometer ITMX seems to be broken
As people probably know,
 Accelerom-EYMX-Feb22.jpgAccelerom-ITMX-Feb22.jpg 
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