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ID Date Author Type Category Subjectup Text Attachments
  6768   Wed Jun 6 18:04:22 2012 JamieUpdateComputer Scripts / Programshacked ezca tools

    

       
            
  
  6769   Wed Jun 6 18:22:52 2012 JamieUpdateComputer Scripts / Programshacked ezca tools

    

       
            
  
  8068   Tue Feb 12 18:25:43 2013 JamieSummaryGeneralhalf PRC with astigmatic PR2/3

    

       
            
  
  1165   Mon Dec 1 15:09:27 2008 robUpdatePEMhalf-micron particle count is alarming    
  1168   Tue Dec 2 19:51:32 2008 ranaUpdatePEMhalf-micron particle count is alarmingThe 0.5 micron dust monitor count is now pretty
high (36000). I wandered around the lab to
see if there was anything
 Untitled.pngdust.png 
  9970   Mon May 19 09:19:44 2014 SteveUpdateLSChappy IFO15 hours  whenthinksareworking.png 
  10858   Tue Jan 6 10:04:39 2015 SteveUpdateIOOhappy IOO   IOO.png 
  11886   Wed Dec 16 10:56:22 2015 gautamUpdateCDShard reboot of FB[ericq,gautam]

Forgot to submit this yesterday...

While we were trying to get the
  
  1622   Fri May 22 17:05:24 2009 rob, peteUpdateComputershard reboot of vertex suspension controllerswe did a hard reboot of c1susvme1, c1susvme2,
c1sosvme, and c1susaux.  We are hoping
this will fix some of the weird suspension
  
  88   Fri Nov 9 09:37:55 2007 steveUpdatePSLhead temp hiccupJust an other PSL-126MOPA_HTEMP hiccup.
The water chiller is at 20.00C
 headtempup.jpg 
  1116   Thu Nov 6 09:45:27 2008 steveUpdateMOPAhead temp hick-up vs power The control room AC temp was lowered from
74F to 70F around Oct 10
This hold the head temp rock solid 18.45C
 htpr.jpg 
  911   Tue Sep 2 10:09:03 2008 steveUpdatePSLhead temp is cooling downThe chiller was over flowing this morning.
800 cc of water was removed.
PSL-126MOPA_HTEMP peaked at 20.7 C (normal
  
  13269   Tue Aug 29 15:41:17 2017 KiraSummaryPEMheater circuitI worked with Kevin and Gautam to create
a heater circuit. The first attachment is
Kevin's schematic of the circuit. The
 heater_circuit.pdfsimulation.pngheater_setup.jpgIMG_20170829_131126.jpg 
  13292   Tue Sep 5 09:47:34 2017 KiraSummaryPEMheater circuit calculationsI decided to calculate the fluctuation
in power that we will have in the heater
circuit. The resistors we ordered have 50
  
  6116   Wed Dec 14 12:18:11 2011 ZachUpdateRF Systemheater reengagedI
reengaged the heater this morning, to compare
 heater_reengaged_12_14_11.png 
  14105   Thu Jul 26 01:52:01 2018 terraUpdateThermal Compensationheater work updateJust a quick update: over the past few
days we've taken (at least) 5 scans around
each peak [carrier - HOM3] at 9.4V/0.8A,
 OpLev_thermal_drift.pdfhotColdAll.pdf 
  9499   Fri Dec 20 01:24:11 2013 DenUpdateLSChigh bandwidth loop achieved for yarmKoji, Den
CM Servo with
 CM_OL_meas.pdfcm_ol_sim.pdfCM_slow_fast_cross.pdf 
  9501   Fri Dec 20 03:34:40 2013 KojiUpdateLSChigh bandwidth loop achieved for yarmThis
too huge offset difference with/without "BOOST"
switch should be checked.
  
  9507   Fri Dec 20 22:45:02 2013 KojiUpdateLSChigh bandwidth loop achieved for yarmI checked the offset situation in the CM
servo boost circuit. 
- The offset voltage on the CM servo
  
  7645   Wed Oct 31 14:31:34 2012 SteveUpdatePEMhigh particle countHigh particle count confirmed with #2 counter  highparticlec.png 
  7680   Wed Nov 7 11:43:29 2012 SteveUpdatePEMhigh particle count ALARTThe BS camber is open only. We should close
ASAP
Outside air quality is 1.7- 2.2 
 highpartcount.png 
  8001   Tue Feb 5 10:18:54 2013 SteveUpdatePEMhigh particle count ALART

    

       
            
 badair.png100d_airq.png 
  7681   Wed Nov 7 14:59:35 2012 SteveUpdatePEMhigh particle count ALART & oplevs

    

       
            
 oplevs.png 
  2370   Wed Dec 9 09:07:32 2009 steveUpdatePEMhigh seismic activityThe construction activity is shaking the
tables in the control room.  The compactor-
large remote controlled jackhammer is in
 seis24d.pngseis4h.pngP1050833.JPGP1050836.JPG 
  4405   Fri Mar 11 16:30:42 2011 steveUpdateGeneralhigh speed servo unit is hereNew
Focus Servo Controller has just arrived.
We have 25 days to evaluate this product.
 P1070462.JPG 
  12888   Tue Mar 14 15:05:18 2017 SteveUpdateOptical Levershistory of ETMX oplev laser 




 ETMX_1103P_3y.png 
  2151   Tue Oct 27 18:01:49 2009 robUpdatePSLhmmmA 30-day trend of the PCDRIVE from the
FSS.
 pcdrive_trend.png 
  1004   Mon Sep 29 11:17:14 2008 steveUpdateSAFETYhorizontal viewports are protected with lexanThe four horizontal viewports of arms are
protected 
by 3/8" thick, 8.5" OD Lexan disk of MR10
  
  12616   Tue Nov 15 19:22:17 2016 gautamUpdateGeneralhousekeepingPRM and SRM sat. boxes have been switched
for some time now - but the PRM sat. box
has one channel with a different
  
  6306   Wed Feb 22 19:45:33 2012 kiwamuUpdateLSChow much length offset do we need ?I
did a quick calculation to see if the offset
of the arm length which I tried last night
 armresonance.png 
  4356   Fri Feb 25 10:11:56 2011 steveUpdateSAFETYhow not toThe beam of IR for doubling  is clipping
on bnc cable to green beam transmitted pd.
 Presentation1.jpg 
  4953   Thu Jul 7 13:57:28 2011 steveHowToSAFETYhow not toI found baked allen keys on the top of
the clean optics cabinet.  Somewhat
heavy box that can come down in an earthquake
  
  9027   Mon Aug 19 10:03:17 2013 SteveHowToGeneralhow not to leave a cableWe can not leave cables connected like
this. This is a burned toast award.
 NONOcable.jpg 
  7864   Thu Dec 20 17:13:56 2012 JamieUpdateGeneralhow to deal with problem with in-vac wiring for TTsSo this is obviously a general problem
for all the TTs.  Our in-vacuum wiring
is unfortunately mirrored relative to that
  
  6876   Wed Jun 27 03:43:52 2012 yutaSummaryIOOhow to improve mode matching to armsFrom the mode scan measurements of the
arms(elog #6859),
~6% of mode-mismatch comes from 2nd-order
 modematchMCtoARM_design.pngmodematchMCtoARM_MMT1MMT2longer.png 
  6877   Wed Jun 27 10:27:09 2012 ranaSummaryIOOhow to improve mode matching to armsThe MC waist is correct as is the arm RoCs.
Most likely the error is in the telescope
length or its distance from the MC. Jenne
  
  2164   Fri Oct 30 09:24:45 2009 steveHowToMOPAhow to squeeze more out of little


   
        
            
 44to34.jpg 
  4960   Mon Jul 11 14:03:37 2011 steveHowTolorehow to visit your old labAlberto is visiting us from Australia.
He brought some terrific presents. It is
going to be very demanding task to wait for
 P1080069.JPG 
  709   Mon Jul 21 19:48:57 2008 SharonUpdate how tp restart C1ASSHow to restart C1ASS:

1. reboot
  
  7776   Mon Dec 3 07:40:00 2012 SteveHowToAlignmenthow was the BS chamber misalinged

    

       
            
 BSsupport.jpg 
  6235   Fri Jan 27 17:16:05 2012 kiwamuUpdateLSChypothetical glitch scenarioHere is a hypothetical scenario which
could make the glitches in the LSC error
signals. It can be considered as a
  
  13934   Fri Jun 8 14:40:55 2018 c1lscUpdateCDSi am dead   31.png 
  8394   Tue Apr 2 20:52:35 2013 ranaUpdateComputersiMac bashed I changed the default   
  6765   Wed Jun 6 14:17:56 2012 steveUpdateComputersiMac orderedRana, Steve,
 
  
  11081   Fri Feb 27 01:59:57 2015 ranaHowToLSCiPython Notebook for LSC Sensing MatrixI
have adapted one of Evan's python scripts
 Plots_1109056456.pdfRadar_1109056456.pdf 
  11084   Fri Feb 27 11:20:49 2015 ericqUpdateComputer Scripts / ProgramsiPython Notebook for LSC Sensing Matrix


  
  4742   Wed May 18 18:48:46 2011 kiwamuUpdateElectronicsidentification of RFPD interface cables[Haixing / Kiwamu]
 As a part of the Wednesday's
cabling work, we spent some times for identifying
  
  7676   Tue Nov 6 18:39:16 2012 DenUpdatedigital noiseifo checking systemMatlab version of ifo digital noise estimation
code is almost ready. It estimates digital
noise introduced by each filter bank in each
  
  1219   Fri Jan 9 09:14:17 2009 steveUpdatePEMifo is recovered after eqThere is no obvious damage from last night
earth quake.
All sus dampings were turned on, MC locked
 eq4.5sb.jpg 
  11322   Sat May 23 22:43:10 2015 ericqUpdateGeneralifo recovery logRunning train-of-thought elog:


East N2 cylinder found
  
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