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ID Date Author Type Category Subjectup Text Attachments
  9510   Sat Dec 21 10:53:35 2013 SteveUpdateVACpower supply replaced with a short vent-pumpdown completedThe recovery- pumpdown reached valve configuration 
vacuum normal at 20 hours, cc1 7.7e-6 Torr
 20hrsVacNormal.png 
  6860   Sat Jun 23 18:44:15 2012 steveUpdateGeneralpower surge has no effect on the labI was notified by CIT Utilities that there
was a power surge or short power outage this
after noon.
  
  7088   Mon Aug 6 09:46:31 2012 steveUpdateIOOpoweroutage turns laser off
. Power
  
  7800   Sat Dec 8 04:12:38 2012 DenUpdateLSCprcl Today I wanted to check that AS and
REFL beams are real and contain proper information
about interferometer. For this I locked YARM
 IMG_0118.JPG 
  8446   Fri Apr 12 02:56:34 2013 DenUpdateLockingprcl angular motionI compared PCRL and XARM angular motions
by misaligning the cavities and measuring
power RIN. Divergence angles for both cavities
 pointing.pngoplev_exc.pdf 
  8447   Fri Apr 12 09:20:32 2013 ranaUpdateLockingprcl angular motion How
is the cavity g-factor accounted for in this
  
  8449   Fri Apr 12 13:21:34 2013 DenUpdateLockingprcl angular motion

    

       
            
  
  8450   Sat Apr 13 03:45:51 2013 ranaUpdateLockingprcl angular motion 
 Maybe its equivalent, but I
would have assumed that the input beam is
  
  8451   Sat Apr 13 23:11:04 2013 DenUpdateLockingprcl angular motion

    

       
            
 pointing.pdf 
  8454   Sun Apr 14 17:56:03 2013 ranaUpdateLockingprcl angular motion

    

       
            
  
  8564   Mon May 13 18:44:04 2013 JenneUpdateLockingprcl angular motionI want to redo this estimate of where RIN
comes from, since Den did this measurement
before I put the lens in front of the POP
 TT_Q_measurements.pdf 
  14437   Wed Feb 6 10:07:23 2019 ChubUpdate pre-construction inspectionThe Central Plant building will be undergoing
seismic upgrades in the near future. 
The adjoining north wall along the Y arm
  
  5591   Fri Sep 30 19:12:56 2011 KojiUpdateGeneralprep for poweroutage 
 [Koji Jenne]
The lasers were shutdown
  
  13383   Tue Oct 17 17:53:25 2017 jamieSummaryLSCprep for tests of Gabriele's neural network cavity length reconstructionI've been preparing for testing Gabriele's
deep
neural network MICH/PRCL reconstruction.
 c1dnn.png 
  13390   Wed Oct 18 12:14:08 2017 jamieSummaryLSCprep for tests of Gabriele's neural network cavity length reconstruction


  
  6892   Fri Jun 29 02:17:40 2012 yutaUpdateIOOprep for the vent - beam attenuating[Koji, Jamie, Yuta]

We attenuated the incident beam (1.2
  
  6893   Fri Jun 29 03:21:32 2012 yutaUpdateGeneralprep for the vent - others1. Turned off high voltage power supplies
for PZT1/2 (input PZTs) and OMC stage 1/2.
They live in 1Y3 rack and AUX_OMC_NORTH rack.
 MEDMscreenshotswithCOW_20120629.png 
  14022   Tue Jun 26 20:59:36 2018 aaronUpdateOMCprep for vent in a couple weeksI checked out the elog from the vent in
October 2016 when the OMC was removed from
the path. In the vent in a couple weeks,
  
  4574   Wed Apr 27 18:14:48 2011 kiwamuUpdateLSCpreparation for DRMI locking : RF status   RF_Work_Status.png 
  2644   Fri Feb 26 15:32:13 2010 steveConfigurationVACpreparation for power outage: vacuum all offThere is a planned power outage tomorrow,
Saturday from 7am till midnight.
I vented all annulies and switched
 ventd3.jpg 
  13806   Wed May 2 10:03:58 2018 SteveHowToSEIpreparation of load cell measurement at ETMXGautam and Steve,

We have calibrated the load 
cells. The support beams height monitoring
 6x 
  13809   Thu May 3 09:56:42 2018 SteveHowToSEIpreparation of load cell measurement at ETMX[ Dennis Coyne'  precision answer
]

  
  13840   Mon May 14 08:55:40 2018 Dennis CoyneHowToSEIpreparation of load cell measurement at ETMXfollow
up email from Dennis 5-13-2018.
  
  5089   Tue Aug 2 02:35:23 2011 kiwamuUpdateGeneralpreparation of the vent : status and planThe vent
will take place on Wednesday.
  
  5078   Sun Jul 31 22:48:35 2011 kiwamuSummaryGeneralpreparation of the vent : status updateStatus
update for the vent preparation:
  
  5080   Mon Aug 1 08:52:37 2011 steveUpdateVACpreparation to ventBoth arms locked easely around 1V transmited. 
We should recenter oplevs.
 pztsteering.pngvac1Aug2011.pngPEM200d.jpg 
  2778   Wed Apr 7 09:00:01 2010 steveHowToPEMprepare to open chamberIn order to minimize the diffusion of more
dust particles into the vented IFO vacuum
envelope
 0.5micron.jpg 
  5950   Fri Nov 18 16:37:14 2011 steveUpdateVACpreparing for ac power interruptionThe vacuum is ready for no AC power for
1 hr on Sunday morning at 10am
 
 planednopower.png 
  10467   Mon Sep 8 08:24:49 2014 SteveUpdateComputer Scripts / Programspreparing vac system to rebootQ and Steve will follow elog 10028
entry to prepare the vacuum system for safe
reboot
  
  10468   Mon Sep 8 11:10:26 2014 ericqUpdateComputer Scripts / Programspreparing vac system to reboot

    

       
            
  
  10469   Mon Sep 8 11:34:47 2014 ranaUpdateComputer Scripts / Programspreparing vac system to rebootFYI: in that rack, the +15V pulls ~0.5
A more than -15V usually. I think this is
due to some RF amplifiers which are powered
  
  10470   Mon Sep 8 12:11:36 2014 manasaUpdateComputer Scripts / Programspreparing vac system to reboot

    

       
            
  
  10477   Tue Sep 9 14:18:40 2014 SteveUpdateComputer Scripts / Programspreparing vac system to reboot

    

       
            
 v1closedfor1h.png 
  11384   Tue Jun 30 11:33:00 2015 JamieSummaryCDSprepping for CDS upgradeThis is going to be a big one.  We're
at version 2.5 and we're going to go
to 2.9.3.
  
  4567   Mon Apr 25 22:38:49 2011 kiwamuUpdateLSCprepration for DRMI : Y arm flashingThis
week is going to be a recycled Michelson
  
  14247   Fri Oct 12 17:37:03 2018 SteveUpdateVACpressure gauge choices We want to measure the pressure gradient
in the 40m IFO

Our old MKS cold cathodes are out
  
  5017   Fri Jul 22 10:24:34 2011 steveUpdateVACpressure plot at day 213Dec 21, 2010 we pumped down the MARK4 rebuilt
40m-IFO and the malev has been pumping on
it since than
 p.jpg 
  5767   Mon Oct 31 08:55:19 2011 steveUpdateVACpressure plot at day 53


   
        
            
 pd71-m-d53.png 
  13184   Thu Aug 10 14:14:17 2017 KiraUpdatePEMpreviously built temp sensorI decided to see what was inside the sensor
that had been previously made. According
to elog 1102, the temperature sensor is LM34,
 IMG_20170810_112315.jpg 
  5889   Mon Nov 14 21:22:48 2011 ranaConfigurationComputersprimetime RSYNC slowing down NODUSnodus:elog>w; who ; date
  9:20pm  up 44 day(s), 
5:14,  5 users,  load average:
  
  3863   Thu Nov 4 17:53:29 2010 yutaUpdateCDSprimitive python script for A2L measurementSummary:
 
I wrote
 a2ltest.png 
  5296   Wed Aug 24 11:40:21 2011 jamie, jenne, kiwamu, suresh, steveUpdateSUSproblem with ITMXITMX was drag wiped, and the suspension
was put back into place.  However, after
removing all of the earthquake stops we found
  
  7863   Thu Dec 20 12:14:19 2012 JamieUpdateGeneralproblem with in-vac wiring for TTsNic and I discovered a problem with the
in-vac wiring from the feed-thru to the top
of the table.  Pin 13 at the top of
  
  7341   Tue Sep 4 20:20:47 2012 jamieUpdateGeneralproblematic tip-tilts

    

       
            
  
  2013   Mon Sep 28 17:39:34 2009 robUpdatePSLproblemsThe PSL/IOO combo has not been behaving
responsibly recently. 
The first attachment is a 15 day
 problems.pngproblems2.png 
  6699   Tue May 29 00:53:57 2012 DenUpdateCDSproblemsI've noticed several CDS problems:

    Communication sign on
C1SUS model turns to red once in a while.
  
  11252   Sun Apr 26 00:56:21 2015 ranaSummaryComputer Scripts / Programsproblems with new restart procedures for elogd and apacheSince the nodus upgrade, Eric/Diego changed
the old csh restart procedures to be more
UNIX standard. The instructions are in the
  
  11267   Fri May 1 20:33:31 2015 ranaSummaryComputer Scripts / Programsproblems with new restart procedures for elogd and apacheSame thing again today. So I renamed the   
  16991   Tue Jul 12 13:59:12 2022 ranaSummaryComputersprocess monitoring: MonitI've installed Monit
on megatron and nodus just now, and will
set it up to monitor some of our common processes.
  
  11093   Tue Mar 3 11:38:11 2015 SteveUpdatesafetyprofessional crane inspection 




 450lbs2015.jpg 
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