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  40m Log, Page 74 of 344  Not logged in ELOG logo
ID Date Author Type Category Subjectup Text Attachments
  3464   Tue Aug 24 14:29:18 2010 josephbUpdateelogElog down for 1 minuteI'm going to take the elog down for one
minute and restart it under gdb (using a
copy of gdb stolen from fb40m since I couldn't
  
  5556   Tue Sep 27 11:43:59 2011 JenneUpdateelogElog has been dying a lot lately...WTF?   
  2187   Fri Nov 6 00:23:34 2009 AlbertoConfigurationComputersElog just rebootedThe elog just crashed and I rebooted it   
  1181   Fri Dec 5 20:40:38 2008 YoichiHowToComputersElog multi-keyword searchThe current Elog search allows you to look
for only one keyword in the text.
You cannot search for two keywords by simply
  
  3795   Wed Oct 27 11:52:45 2010 josephbUpdateelogElog needed to be restartedI had to restart the elog on Nodus because
it was no longer responding.
  
  2739   Wed Mar 31 10:34:02 2010 josephbUpdateelogElog not responding this morningWhen I went to use the elog this morning,
it wasn't responding.  I killed the
process on nodus, and then restarted, per
  
  2196   Fri Nov 6 18:02:22 2009 josephbUpdateComputersElog restartedWhile I was writing up an elog entry, the
elog died again, and I restarted it. 
Not sure what caused it to die since no one
  
  11058   Mon Feb 23 15:04:10 2015 ZachUpdateGeneralElog restartedThe elog crashed while I was creating
an entry to the Cryo log. I restarted it
with the 
  
  3994   Tue Nov 30 12:10:44 2010 josephbUpdateelogElog restarted againThe elog
seemed to be down at around 12:05pm. 
I waited a few minutes to see if the browser
  
  4168   Wed Jan 19 10:31:24 2011 josephbUpdateelogElog restarted againElog wasn't
responding at around 10 am this morning. 
I killed the elogd process, then used the
  
  2562   Tue Feb 2 18:15:47 2010 AlbertoUpdateelogElog restarted it Zach made me notice that the elog
had crashed earlier on this afternoon. 
I just restarted it with the restarting
  
  3461   Tue Aug 24 06:34:01 2010 AlastairUpdateGeneralElog......was down.  Have restarted it.   
  2473   Mon Jan 4 17:21:30 2010 JenneConfigurationIOOElusive Mode Matching Solution found!I think I have
finally found a Mode Matching solution for
 Awesome_MM_Solution.png 
  2481   Wed Jan 6 03:44:41 2010 KojiConfigurationIOOElusive Mode Matching Solution found!I
am in the way to get a reasonable optical
layout.
  
  7207   Thu Aug 16 18:59:18 2012 JenneUpdateSAFETYEmergency Exit door unlocked againKoji just found the emergency exit door
unlocked again.  NOT GOOD.
  
  15485   Wed Jul 15 19:23:44 2020 gautamUpdateGeneralEmergency light on in control roomThe emergency lamps above the exit sign
on the NW entrance to the control room are
on. I tried opening and closing the door,
  
  15486   Wed Jul 15 19:51:51 2020 KojiUpdateGeneralEmergency light on in control roomIt happened before too. Doesn't it
say it has occasional self-testing or something?
  
  15487   Wed Jul 15 20:58:40 2020 gautamUpdateGeneralEmergency light on in control roomTrue - it is now not on anymore.




  
  16047   Mon Apr 19 09:17:51 2021 JordanUpdateVACEmpty N2 TanksWhen I came into the lab this morning,
I noticed that both N2 tanks were empty.
I had swapped one on Friday (4-16-21) before
 N2_Pressure.PNG 
  16064   Wed Apr 21 12:56:00 2021 JordanUpdateVACEmpty N2 TanksInstalled T2 today, and leaked checked
the entire line. No issues found. It could
have been a bad valve on the tank itself.
 Screenshot_2021-04-21_12-53-26.png 
  16090   Wed Apr 28 11:31:40 2021 JonUpdateVACEmpty N2 TanksI checked out what happened on c1vac. There
are actually two independent monitoring codes
running:
  
  16305   Wed Sep 1 14:16:21 2021 JordanUpdateVACEmpty N2 TanksThe right N2 tank had a bad/loose valve
and did not fully open. This morning the
left tank was just about empty and the right
  
  16344   Mon Sep 20 14:11:40 2021 KojiUpdateBHDEnd DAC Adapter Unit D2100647I've uploaded the schematic and PCB
PDF for End DAC Adapter Unit D2100647.

Please review the design.
 D2100647_End_DAC_Adapter.pdf 
  11335   Fri May 29 02:05:08 2015 ericqUpdateLSCEnd Laser temperatures setBoth
green beatnotes have been found with nominal
amplitudes. (X: -30dBm Y: -20dBm), at temperatures
  
  9248   Wed Oct 16 19:19:14 2013 MasayukiUpdateGreen LockingEnd PDH 60 Hz comb noise in YARM[Manasa, Masayuki]
- Motivation
 comb_noise.pdf 
  9273   Thu Oct 24 04:07:32 2013 MasayukiUpdateGreen LockingEnd PDH control signal, X-end PDH servo gain optimizationControl signal measurement of end PDH
control
The Yarm ALS wasn't robust. Yesterdays
 outojloop.png 
  16538   Sun Jan 2 20:46:46 2022 KojiUpdateSUSEnd SUS Electronics building19:00~ Start working on the electronics
bench

The following units were tested
 PXL_20220103_081133119.jpg 
  10629   Tue Oct 21 18:40:46 2014 manasaUpdateGeneralEnd laser fiber setup [Manasa, Diego]
This is our first time touching tables
for Frequency Offset Locking. 
  
  47   Thu Nov 1 16:42:48 2007 Andrey RodionovSummaryEnvironmentEnd of Daylight Saving Time this weekendUseful information for everyone, as a friendly
reminder:
  
  16869   Mon May 23 13:16:59 2022 PacoUpdateBHDEnd of vent - checks[Paco, Yuta]

Prep for closing and pump down.


Aligned IFO to maximize
 OSEMs20220523.txtScreenshot_2022-05-23_13-24-06_IFOaligned_GTRY_still_clipping_but_less.pngPR3position.JPG 
  3432   Wed Aug 18 11:40:59 2010 josephb,kiwamu,yoichiUpdateCDSEnd station working with latest RCG codeWe were able to get the latest SVN checkout
(revision 2009), working with the c1x00 (IOP)
and c1vgl models at the new X end on the
  
  8892   Mon Jul 22 17:17:30 2013 annalisaUpdateendtable upgradeEnd table picture   YendTable.jpg 
  8896   Tue Jul 23 00:51:46 2013 KojiUpdateendtable upgradeEnd table pictureThe spot on the IPANG QPD was checked.
The spot is higher than the center and South
side of the lens.
 P7224222.JPGP7224223.JPGP7224224.JPGP7224238.JPG 
  8910   Tue Jul 23 19:37:08 2013 AnnalisaUpdateendtable upgradeEnd table picture

    

       
            
 IMG950073.jpgIMG950072.jpg 
  7731   Tue Nov 20 11:40:19 2012 ranaConfigurationGreen LockingEnd table upgrade for auxiliary green laser : ETMX layout on new table 
 Mounts:

    No more mounts using the
  
  9345   Tue Nov 5 16:47:09 2013 JenneUpdateLSCEnd transmission QPDsI think Steve is trying to align the end
transmission QPDs, since the arms are locked
nicely right now.  I noticed that the
  
  9286   Thu Oct 24 23:25:37 2013 JenneUpdateLSCEnd transmission triggering

    

       
            
  
  12202   Mon Jun 20 14:03:04 2016 jamieConfigurationCDSEndRun GPS receiver upgraded, fixedI
just upgraded the EndRun Technologies Tempus
LX GPS receiver timing unit, and it seems
 GPSreceiverWorking.jpg 
  8373   Fri Mar 29 16:35:54 2013 SteveUpdate40m UpgradingEndtable upgrade 
 My full effort to get the optical
table enclosure ready for the lab has failed
  
  8315   Wed Mar 20 14:00:21 2013 SteveUpdate40m UpgradingEndtable upgrade As discussed at the 40m meeting: Koji,
Manasa and Steve
  
  8318   Wed Mar 20 15:51:54 2013 ManasaUpdate40m UpgradingEndtable upgrade

    

       
            
 Endtable_inventory.pdf 
  8310   Tue Mar 19 14:21:57 2013 ManasaUpdate40m UpgradingEndtable upgrade : INVENTORYTHE INVENTORY FOR ETMY ENDTABLE.
We definitely need the polaris mirror
mounts and cylindrical lenses. As for the
 Endtable_inventory.pdf 
  8312   Tue Mar 19 19:19:50 2013 JenneUpdate40m UpgradingEndtable upgrade : INVENTORYDoes "Ready (in stock)" for the
base plates mean in stock at the company,
or in hand and already here in the
  
  7704   Tue Nov 13 11:30:54 2012 ManasaConfiguration40m UpgradingEndtable upgrade for auxiliary green laserI'm set on the mission to get the new bigger endtables setup  ETMX_sch.png 
  8371   Fri Mar 29 00:27:06 2013 ManasaUpdate40m UpgradingEndtable upgrade for auxiliary green laser : AssemblyI am currently putting together all components
so that they are ready to go on the table
once leveling and installation of shield
 IMG_0433.JPGIMG_0434.JPG 
  7705   Tue Nov 13 16:18:51 2012 ManasaConfiguration40m UpgradingEndtable upgrade for auxiliary green laser : Circularize the 1W NPRO beam profileWith reference to measurements made earlier: elog, 
Beam parameters for Innolight 1W
  
  7706   Tue Nov 13 20:13:07 2012 KojiConfiguration40m UpgradingEndtable upgrade for auxiliary green laser : Circularize the 1W NPRO beam profileThese fs are too short.


  
  7726   Mon Nov 19 20:03:53 2012 ManasaConfiguration40m UpgradingEndtable upgrade for auxiliary green laser : ETMX layout on new tableI have attached the possible layout of
the optics on the new ETMX endtable. More
optics have been added when compared to the
 ETMX_endtable_New_Model.pdf 
  7727   Mon Nov 19 20:17:53 2012 JenneConfiguration40m UpgradingEndtable upgrade for auxiliary green laser : ETMX layout on new table 
For convenience, I would include
a steering mirror in front of the TRX PD. 
  
  7728   Mon Nov 19 22:42:14 2012 KojiConfiguration40m UpgradingEndtable upgrade for auxiliary green laser : ETMX layout on new table
    I don't like the idea to
place the cylindrical lenses right in front
of the laser. 
  
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