40m QIL Cryo_Lab CTN SUS_Lab TCS_Lab OMC_Lab CRIME_Lab FEA ENG_Labs OptContFac Mariner WBEEShop
  40m Log, Page 326 of 327  Not logged in ELOG logo
ID Date Author Type Category Subjectup Text Attachments
  4031   Wed Dec 8 22:47:09 2010 kiwamuUpdateSUSwatchdogs off at ITMX and ETMXTonight,
swing again.
  
  11767   Mon Nov 16 16:18:34 2015 gautamUpdateGeneralwater leak along Y-arm?A Caltech maintenance staff dropped by
at around noon today, and told me that he
had seen a small puddle of water on the other
  
  11771   Tue Nov 17 10:06:53 2015 SteveUpdateGeneralwater leak in east arm


 eastArmLeakyPipeInsideWall.jpgwd18ft.jpg 
  1991   Fri Sep 18 14:25:00 2009 robOmnistructurePSLwater under the laser chillerrob, koji, steve
We noticed some water (about a cup)
on the floor under the NESLAB chiller today. 
  
  1992   Fri Sep 18 16:05:08 2009 JenneOmnistructurePSLwater under the laser chiller

    
        
  
  2297   Thu Nov 19 09:25:19 2009 steveUpdateMOPAwater was added to the laser chillerI added ~500 cc of distilled water to the
laser chiller yesterday.
 htempwtr.png 
  8099   Mon Feb 18 18:28:01 2013 yutaBureaucracyAlignmentwe are going to pump downWe
will start preparing for pumping down. Main
goal for this is to demonstrate PRFPMI using
  
  13475   Thu Dec 14 08:59:17 2017 SteveUpdateGeneralwe are here   8_days.png 
  1627   Wed May 27 10:54:09 2009 robUpdatePSLwe don't understand the chiller (broken)


   
        
            
  
  1628   Wed May 27 15:59:44 2009 robUpdatePSLwe don't understand the chiller (broken)steve, alberto, rob
After some futzing around with the
chiller, we have come to the tentative conclusion
  
  7693   Fri Nov 9 11:38:38 2012 jamieUpdateGeneralwe're closing upAfter a brief look this morning, I called
it and declared that we were ok to close
up.  The access connector is almost
  
  152   Fri Nov 30 21:27:24 2007 ranaDAQPEMweather / stacis / c1pem1I was trying to add some Seis BLRMS channels
to the c1pem1 processor so that we could
have DMT trends.
  
  189   Wed Dec 12 22:24:48 2007 tobinFrogsPEMweather stationI poked at the weather station briefly this
evening.
  
  11291   Thu May 14 17:41:10 2015 ranaUpdatePEMweather station and Guralp maintenanceToday Steve and I tried to recenter the
Guralps. The breakout box technique didn't
work for us, so we just turned the leveling
 GurPost_150514.pngsecretWeatherTrends.png 
  418   Tue Apr 8 09:08:54 2008 steveConfigurationPEMweather station disconnectedWe can not leave cables in the walkways and
go on vacation.
I disconnected the weather station from the
 toast.jpg 
  516   Wed Jun 4 10:18:52 2008 steveUpdatePSLwedged SS beam trapI moved the SS trap over to the psl table.
Texas super # 8 was used from the large shipment.
TXs#8 scattering measured as before, meaning
 trap1.pngtrap2.png 
  2027   Wed Sep 30 02:01:28 2009 robUpdateLockingweekIt's been a miserable week for lock acquisition,
with each night worst than the last. 
The nadir was around Sunday night, when I
 srmcpu.png 
  5151   Tue Aug 9 03:05:05 2011 kiwamuSummaryGeneralweekly reportSummary of the week ending Aug 8th.   
  764   Wed Jul 30 12:03:44 2008 MashaSummaryAuxiliary lockingweekly summaryI've been learning about mode matching/beam
propagation, so I can work on getting more
 mz_fiber_noise0730.pngsetup0730.JPGMZnoise_sources0727.png 
  804   Wed Aug 6 13:57:44 2008 MashaSummaryAuxiliary lockingweekly summaryFinished second progress report.

Working on improving the sensitivity of the
  
  3145   Wed Jun 30 12:13:39 2010 Sharmila, KatharineUpdateWIKI-40M Updateweekly updateWeekly Project Update:

We are studying Haixing's circuit
  
  3256   Wed Jul 21 12:03:14 2010 Katharine, SharmilaUpdateWIKI-40M Updateweekly updateThis past week, we levitated our small
cylindrical magnet (with the flag made from
heat shrink).  Though the levitated
  
  1780   Wed Jul 22 18:04:14 2009 robOmnistructureComputersweird noise coming from Gigabit switchin the rack next to the printer. 
It sounds like a fan is hitting something.
  
  4704   Thu May 12 18:21:19 2011 kiwamuUpdateIOOwelcome back IP_POSIP_POS
is back.  
  
  3808   Thu Oct 28 09:16:17 2010 steveUpdatePEMwelding in the vertex areaFire-smoke sensors in the vertex area #2-31,
2-30 east, 2-32 south/MC2 and 2-37 old control
room area are turned off to accommodate the
  
  3654   Tue Oct 5 17:39:21 2010 steveConfigurationVACwest access connector removedKiwamu, Koji, Yutah, Rana, Jan and Steve
We removed the west access connector
this afternoon.
  
  Draft   Mon Aug 5 16:28:41 2019 yehonathanUpdateLoss Measurementwhat is going on with the loss measurements ?We hypothesize that the systematic error
in the loss measurement can come from the
fact that the requirement on the alignment
  
  5083   Mon Aug 1 17:47:37 2011 steveUpdateASCwhat is not workingSUS-ETMY_QPD is not responding. It is reading
zero in dataviewer and 4,400 counts on QPD
MEDM screen.......must be wrong cable connected
  
  8184   Wed Feb 27 14:53:02 2013 SteveUpdateLSCwhat is the Fibox ?Fibox
FBAI-M 20bit units were connected with
multimode
  
  6325   Mon Feb 27 18:33:11 2012 jamieUpdatePSLwhat to do with old PSL fast channelsIt appears that the old PSL fast channels
 never made it into the new DAQ system. 
We need to figure out what to do with them.
  
  3711   Thu Oct 14 00:53:44 2010 kiwamuUpdateSUSwhat's wrong with MC2It turned out that
the DC alignment of MC2 from epics doesn't
 OSMEs.png 
  3731   Fri Oct 15 22:16:22 2010 kiwamuUpdateSUSwhat's wrong with MC2[Yuta, Suresh, Rana and Kiwamu]
 The
  
  7936   Thu Jan 24 08:28:35 2013 SteveUpdateVACwhen to pumpdown ?Reminder: I will be on vacation next week.
We would have to put the access connector
in tonight if I'm pumping down Friday, tomorrow.
  
  4909   Wed Jun 29 11:45:54 2011 steveUpdateGeneralwhere are we storing PDs ?Photo diodes stored in the east arm cabinet
E4:  ALL PDs  meet here, fast 
or slow......
 P1070921.JPG 
  2234   Wed Nov 11 09:48:04 2009 steveUpdateIOOwhere is IOO-RFAMPD_DCMON ?RFAMPD_DCMON disappered on Nov 5, 2009  rfampddc.jpg 
  12953   Thu Apr 27 17:55:33 2017 SteveUpdateCameraswhich camera to use for IR scatterring picturesYesterday I failed to take good pictures
of ETMY  resonant arm of 1064 nm with
Cannon Rebel T3i in RAW 22-27Mp & JPG
 P4270081RAWolym.jpgImg0344.jpg 
  4353   Thu Feb 24 19:59:25 2011 kiwamuUpdateGreen Lockingwhitening filter for ALSI forgot to mention about the whitening
filter for the ALS digital control system.
As usual I used a whitening filter
 ACDC.png 
  14217   Wed Sep 26 10:07:16 2018 SteveUpdateVACwhy reboot c1vac1Precondition: c1vac1 & c1vac2 all LED
warning lights green [ atm3 ], the only error
message is in the gauge readings NO COMM,
 NOcomm.pngReboot_&_sawp.pngc1vac1&2_.jpg 
  5332   Thu Sep 1 15:07:45 2011 steveUpdateSUSwhy ITMY is moving more ?Atm1, ITMY and the SRM are on the same
isolation stack.  So why does 
the SRM move twice as much?
 itmy_srm_etmx.jpgP8220152.JPG 
  233   Thu Jan 10 12:08:23 2008 steveUpdateSUSwhy did the BS move?   bshopped.jpg 
  14168   Thu Aug 16 14:48:14 2018 SteveUpdateVACwhy do we need a root pump?

Basic Pump Throughput Concepts

What
is Pump Throughput?

The manufacturer
 6x 
  5955   Sat Nov 19 00:34:36 2011 ZachUpdateRF Systemwhy the Newport 6000 isn't working I just figured out why the Newport
6000 isn't stabilizing the temperature. It is designed
  
  3825   Fri Oct 29 16:03:35 2010 kiwamuUpdatePSLwideband EOM : installed the triple resonant box 
 
 small_DSC_2654.jpg 
  3819   Fri Oct 29 05:40:51 2010 kiwamuUpdatePSLwideband EOM aligned : AM decreased by 24dBAt the
PSL table I aligned the wideband EOM more
 EOMalign.png 
  7472   Wed Oct 3 18:45:51 2012 jamieUpdateIOOwiki page for active IO tip-tiltsI made a wiki
page for the active IO tip-tilts. 
I should have made this a long time ago.
  
  219   Wed Jan 2 11:38:56 2008 tobinSummaryWIKI-40M Updatewiki spamOur wiki keeps getting spammed.  It turns
out that you can upload attachments without
a password, which is a bug.  I'll ask David
  
  4563   Mon Apr 25 11:23:41 2011 AlastairBureaucracyComputerswiki?40m wiki seems to have been down for quite
a while now but I can't see any info in the
elog about it.  Is there some ongoing
 119427.strip.gif 
  4564   Mon Apr 25 11:58:37 2011 JamieBureaucracyComputerswiki?


   
        
            
  
  4565   Mon Apr 25 12:55:19 2011 JenneBureaucracyComputerswiki?


   
        
            
  
  4566   Mon Apr 25 12:55:35 2011 AlastairBureaucracyComputerswiki?


   
        
            
  
ELOG V3.1.3-