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  40m Log, Page 213 of 335  Not logged in ELOG logo
ID Date Author Typeup Category Subject Text Attachments
  9407   Tue Nov 19 01:11:19 2013 JenneUpdateLSCGreen statusI am able to lock the Yarm ALS, but not
at the full gain that I should be. 
I attribute this to my mediocre alignment
  
  9408   Tue Nov 19 11:33:39 2013 SteveUpdateSUSPRM- OSEM side ccd camera is in place

    

       
            
 closetoWindowGlass.jpgDangerUnprotectedViewport.jpg 
  9409   Tue Nov 19 11:56:10 2013 manasa, jenne, ericQUpdateLSCPRM- OSEM side ccd camera is in place

    

       
            
  
  9410   Tue Nov 19 14:47:44 2013 JenneUpdateLSCPRM oplev measured and modeled TF

    

       
            
  
  9411   Tue Nov 19 14:47:59 2013 manasaUpdateLSCGreen status

    

       
            
  
  9412   Tue Nov 19 15:04:14 2013 JenneUpdateCDSCan talk to AUXEY againThe ETMY sliders on IFO_ALIGN were white
again this morning, so I went down to the
Yend and pushed the RESET button on auxey. 
  
  9413   Tue Nov 19 17:47:17 2013 JenneUpdateLSCPRMI+2arms attemptSo far this afternoon, I have redone the
IFO alignment, locked both arms with ALS,
moved both arms off resonance, locked PRMI,
  
  9414   Tue Nov 19 21:28:05 2013 manasaUpdateLSCPRMI carrier lockingSince we have never tried to lock PRMI
on carrier after the folding mirrors were
flipped, I tried to lock PRCL on carrier.
  
  9415   Tue Nov 19 21:59:35 2013 manasaUpdateLSCPRMI carrier locking

    

       
            
  
  9416   Wed Nov 20 01:10:38 2013 JenneUpdateLSCPRMI carrier lockingI have increased the gain of the MICH loop
to -100, and set FMs 2,3,7  to be triggered. 
I have also increased the PRCL gain to 2. 
  
  9417   Wed Nov 20 16:05:52 2013 JenneUpdateLSCPRMI carrier locking, OpLev Check[Jenne, EricQ]
We locked the PRMI on carrier again
today, after lunch.  Following a suggestion
  
  9418   Wed Nov 20 17:05:15 2013 JenneUpdateLSCXend QPD and Whitening board replaced[EricQ, Jenne]
We have put the Xend QPD back in
place, and centered it.  The whitening
  
  9419   Thu Nov 21 09:56:15 2013 SteveUpdateSUSgreen glass beam dumps Green
welding glass  is used in these
Koji
 HEXdump.jpgVdump.jpgDiamond1_2inchTraps.jpg 
  9420   Thu Nov 21 10:24:50 2013 KojiUpdateSUSbeam dumpsYou don't need the fourth glass piece on
the diamond beam dump.
  
  9421   Thu Nov 21 16:32:20 2013 SteveUpdateIOOPMC needs a touch of love 
 The PMC power degrading on
this 3 days plot. MC2 -T = 14,200 counts.
 PMCplus.png 
  9422   Fri Nov 22 09:54:22 2013 SteveUpdateCDSDAQ?Jamie, I think the computers know that
you are away. c1lsc keeps going down.
The short time plots are correct.
 comp8d.png 
  9423   Fri Nov 22 14:21:43 2013 JamieUpdateComputer Scripts / ProgramsDAQ?

    

       
            
  
  9424   Fri Nov 22 16:32:08 2013 SteveUpdateVACRGA scan at day 108

    

       
            
 RGAscanVacNormal108d.pngday108.pngpd76m110d.png 
  9425   Mon Nov 25 10:57:14 2013 KojiUpdateCDSwoes on the X-end hostsThis morning I came in the 40m then found 
1) c1auxex was throwing out the same
 Screenshot.png 
  9426   Mon Nov 25 12:57:54 2013 JamieUpdateCDStiming problem at c1iscex IO chassisThere is definitely a timing distribution
malfunction at the c1iscex IO chassis. 
There is no timing link between the "Master
  
  9427   Mon Nov 25 17:28:33 2013 JenneUpdateCDStiming problem at c1iscex IO chassis

    

       
            
  
  9428   Wed Nov 27 14:45:49 2013 JenneUpdateCDStiming problem at c1iscex IO chassis [Koji, Jenne]
The new fiber arrived today, and
we tried it out.  
  
  9429   Wed Nov 27 16:29:21 2013 JenneUpdateCDSAccidentally turned off SUS IO chassis[Jenne, Koji]
I was trying to lock the Yarm, and
saw that I was not getting signals to go
  
  9431   Sat Nov 30 23:50:28 2013 ranaUpdateIOOmode cleaner not locking

    

       
            
 mcdrift.png 
  9432   Mon Dec 2 14:24:10 2013 SteveUpdateCDScomputer problemsRack 1x6 is very noisy.
 SunFire X4600 computer: FB
(directly below Megatron) has it's yellow
 c1iscex.png1X6.JPG 
  9433   Mon Dec 2 16:04:47 2013 JamieUpdateCDSc1iscex timing problem mysteriously disappears??? (thanksgiving miracle???)

    

       
            
 festatus.png 
  9434   Mon Dec 2 17:05:13 2013 JenneUpdateCDSc1iscex timing problem mysteriously disappears??? (thanksgiving miracle???)Steve was trying to do something to it
this morning, but I'm not exactly clear on
what it was.  Maybe that helped? 
  
  9435   Tue Dec 3 07:42:23 2013 SteveUpdateCDSc1iscex timing problem mysteriously disappears??? (thanksgiving miracle???)

    

       
            
  
  9436   Tue Dec 3 17:08:06 2013 KojiUpdateCDScomputer problemsIt seems that the front fan unit was running
at the full speed. The fan itself seems still
OK.
  
  9437   Wed Dec 4 12:02:39 2013 KojiUpdateCDSFB restoredNow
FB is fixed: daqd and nds are running

When I rebooted FB, I noticed
  
  9438   Wed Dec 4 13:37:34 2013 JenneUpdateCDSc1auxex down again

    

       
            
  
  9439   Wed Dec 4 14:16:42 2013 JenneUpdateLSCPRFPMI flashes on transmission QPDs2 weeks ago I took some data, and remembered
today at the 40m meeting that I hadn't posted
it.  Bad grad student.
 ArmsResonatingUsingALS_PRMIflashing_TRX_TRY.pdf 
  9441   Wed Dec 4 21:33:24 2013 KojiUpdateCDSc1scy time-over issue mitigatedc1scy had frequent time-over. This caused
the glitches of the OSEM damping servos.
Today Eric Q was annoyed by the glitches
 TST.pngCDS.pngno_glitch.png 
  9442   Wed Dec 4 21:41:09 2013 ericqUpdateGreen LockingGreen PDH Characterization My job right now is to characterize
the green PDH loops on each arm. Today, Jenne
took me around and pointed at the optics
  
  9443   Thu Dec 5 11:06:43 2013 SteveUpdateCameras viewport video ccd cameras are all covered

    

       
            
 PRMcamera.jpgPRMcameraCover.jpgFaradayCameraCover.jpg 
  9444   Thu Dec 5 12:20:09 2013 JenneUpdateCDSfixing c1mcs timing - go for it

    

       
            
  
  9445   Thu Dec 5 16:20:26 2013 SteveUpdateCDSglitches are gone

    

       
            
 glitchesGONE.pngNOglitches.png 
  9446   Fri Dec 6 10:03:07 2013 SteveUpdateSUSIR effect on MC sensors only

    

       
            
 10minPMCnotLocked.png6Dec2013.png 
  9447   Fri Dec 6 12:45:51 2013 ericqUpdateGreen LockingGreen PDH CharacterizationYesterday, made a slew of measurements
on the X-arm when locked on green. By tweaking
the temperature loop offset and the green
 LoopTF.pdfServoTF.pdfMixerOutput.pdfServoOutput.pdf 
  9448   Fri Dec 6 15:57:41 2013 SteveUpdateIOObeam dumps for PSL pointing monitoring

    

       
            
 IOO_QPD_MONS.jpgPointingTrend23d.png 
  9449   Fri Dec 6 21:38:27 2013 KojiUpdateLSCCDS related activities for LSCI worked on the CDS related stuffs for
LSC yesterday and today.

 LSC1.pngLSC2.png 
  9450   Sat Dec 7 19:29:14 2013 KojiUpdateCDSMEDM/ADL: replace rectangle with specified objectsIn order to unify the theme for MEDM screens,
I'll have to make many combinations of rectangles,
polygons, and invisible related-screen buttons.
 rectangle_config.pngrect_replace_result.png 
  9451   Mon Dec 9 11:44:08 2013 SteveUpdateendtable upgradeETMY optable got new beam dumpAluminum shield replaced by razor beam
dump.
 ETMYoptBefore.jpgETMYoptAfter.jpg 
  9452   Tue Dec 10 10:07:01 2013 SteveUpdateIOOmore beam traps New razor beam dump installed to
trap reflected beam of the input vacuum window.
 
 InputWindowRefDump.jpgInpWindowRefDupm.jpg 
  9453   Tue Dec 10 15:13:55 2013 KojiUpdateIOOIMC servo inspectionYesterday evening I inspected at IMC servo
as a preparation of the CM servo recommissioning.
More details to come.
  
  9454   Tue Dec 10 17:27:47 2013 JenneUpdateTreasureBaby oplev LQR designed loopI *finally* figured out how to bend Matlab
to my will, and close a very simple oplev
loop using LQR technology. 
 NoControlVsClosedLoop_BabyOplev.pngOpenLoopGain_BabyOplev.pngStepResp_BabyOplev.pngImpResp_BabyOplev.png 
  9455   Thu Dec 12 00:21:04 2013 KojiUpdateGreen LockingX end PDH box oscillation issue solved (Re: screwed up the end PDH box)What
a such long pain we suffered.
After more than three years from
  
  9456   Thu Dec 12 00:47:45 2013 DenUpdateLSClocking activityJenne, Den
Today we worked on PRM angular servos
and Y-arm ALS stabilization.
 POP_ASC.pdf 
  9457   Thu Dec 12 14:57:01 2013 KojiUpdateIOOIMC servo inspectionIn order to accomplish CARM control with
the PSL laser frequency, we use two actuators.
One is the longitudinal direction
 OLTF_IMC.pdfAOTF_IMC.pdf131209.zip 
  9458   Thu Dec 12 17:22:07 2013 SteveUpdateGeneralrack power supplies checkedInstrument rack power supplies checked
and labeled at present loads.
 8x 
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