40m QIL Cryo_Lab CTN SUS_Lab TCS_Lab OMC_Lab CRIME_Lab FEA ENG_Labs OptContFac Mariner WBEEShop
  40m Log, Page 3 of 327  Not logged in ELOG logo
ID Date Author Typeup Category Subject Text Attachments
  8306   Mon Mar 18 13:10:19 2013 KojiBureaucracyAuxiliary lockingYend table upgrade - go fetch NPRO from ATF1) Annalisa is going to start  working
on mode profiling and beat note search for
the old MOPA NPRO.
  
  8308   Mon Mar 18 20:13:18 2013 AnnalisaBureaucracyAuxiliary lockingYend table upgrade - go fetch NPRO from ATF

    

       
            
  
  8319   Wed Mar 20 16:45:59 2013 ManasaBureaucracyAuxiliary lockingFetched NPRO from ATF[Koji, Annalisa, Manasa]
NPRO with controller from ATF joins
the 40m. We have put it on the POY table
 P3203298.JPGP3203299.JPG 
  10312   Thu Jul 31 21:59:25 2014 KojiBureaucracyGeneralAntsDon't leave your
food on tables and desks!
Also I put the souvenir chocolates
 P7316690.JPG 
  11096   Wed Mar 4 00:50:36 2015 ranaBureaucracyTreasureTransitioned DARM to AS55Q, some other workJust
in case there was some confusion, the champagne
on my desk is not to be opened
  
  11346   Fri Jun 5 11:59:59 2015 ericqBureaucracyGeneralMaintenance Tasks, IFO upgradesAt wednesday's
meeting, Rana, Koji, Steve, and I started
making a list of maintenence tasks that should
  
  12828   Tue Feb 14 10:43:06 2017 gautamBureaucracyEquipment loanEquipment to Cryo LabPZT   
  12872   Tue Mar 7 15:17:19 2017 SteveBureaucracyGeneralproperty tagProperty tag found.  property_tag.jpg 
  13456   Tue Nov 28 17:27:57 2017 awadeBureaucracyCalibration-RepairSR560 return, still not chargingI brought a bunch of SR560s over for repair
from Bridge labs. This unit, picture attached
(SN 49698), appears to still not be
 96B6ABE6-CC5C-4636-902A-2E5DF553653D.jpegimage.jpg 
  13923   Wed Jun 6 17:22:23 2018 KojiBureaucracyGeneralSalvaged junk from yendWhile Keerthana and johannes were working
at the end, I made a little cleaning at the
yend. I salvaged large amount of hardware
 DSC_0661.JPG 
  13949   Tue Jun 12 14:47:37 2018 gautamBureaucracyGeneralUnlabelled components from EX moved to SP table and labelledSteve mentioned two unlabelled optics were
found at EX, relics from the Endtable upgrade.


One was a 1" 45 deg
  
  13950   Tue Jun 12 15:32:15 2018 SteveBureaucracyGeneralSalvaged junk from XendKoji's collection of Yend components
put away. I cleaned up the  Xend bench
today.
  
  13970   Fri Jun 15 08:09:15 2018 SteveBureaucracyGeneralcleaning up at the PSL enclousureThe cabeling was cleaned up a little bit
yesterday morning. The upper back side is
still massy.
 before.jpgafter.jpgback_side.jpg 
  14170   Mon Aug 20 14:04:53 2018 johannesBureaucracyEquipment loanTwo C30642G PDs removedEDIT: After discussing with Koji
and checking the existing M2ISS PDs I put
the two C30642G back and took two C30665GH
  
  14174   Tue Aug 21 17:32:51 2018 awadeBureaucracyEquipment loanOne P-810.10 Piezo Actuators element removedI've taken a PI Piezo Actuator
(P-810.10)
from the 40m collection. I forgot to note
  
  14553   Fri Apr 19 09:42:18 2019 KojiBureaucracyGeneralItem borrowing (40m->OMC)Apr 16, 2019
Borrowed
two laser goggles from the 40m. (Returned
  
  14555   Fri Apr 19 12:06:31 2019 awadeBureaucracyElectronicsBorrowed Busby Box May 19th 2019I've borrowed the Busby Box for a day
or so.  Location: QIL lab at Bridge
West.
  
  14565   Wed Apr 24 11:22:59 2019 awadeBureaucracyEquipment loanBorrowed Zurich HF2LI Lock in Amplifer to QILBorrowed Zurich HF2LI Lock in Amplifer
to QIL lab Wed Apr 24 11:25:11 2019.
  
  14822   Thu Aug 1 13:55:34 2019 DuoBureaucracyEquipment loanGpib module taken to QIL labvanna --> QIL.

gautam
20190804: The GPIB module + power supply
  
  15544   Fri Aug 28 11:41:23 2020 gautamBureaucracysafetyCrane inspection 2020Mr Fred Goodbar of Konacrane was in the
lab 830am-1130am today. All three cranes
in the VEA were inspected, loaded with 450lb
  
  1   Wed Oct 17 18:46:33 2007 ranaConfigurationGeneraleLog ChangeThis is the first entry in the [U]new[/U]
40m eLog.
  
  20   Fri Oct 26 21:48:40 2007 waldmanConfigurationOMCFiber to 056I set up a 700 mW NPRO in Rana's lab and launched
it onto a 50m fiber.  I got a few mW onto
the fiber,  enough to see with a card before
  
  21   Sat Oct 27 19:00:44 2007 waldmanConfigurationOMCHanging, locked OMC with REFL extracted.I got the OMC locked to the fiber output today.
 It was much more difficult than I expected
and I spent about 30 minutes or so flailing
  
  22   Sun Oct 28 03:03:42 2007 ranaConfigurationIOOThree Way Excitement[SIZE=2][B]We've been trying to measure the
MC mirror internal mode frequencies so that
we can measure
  
  26   Mon Oct 29 12:20:15 2007 waldmanConfigurationOMCChanged OMS filtersI changed the OMS configuration so that some
of the OMC-SUS LED channels go to a breakout
box so that we can input the PDH error signal.
  
  27   Mon Oct 29 23:10:05 2007 waldmanConfigurationOMCLost in DAQspace[Pinkesh, Sam]

In setting up a Digital based control of
 SS.pdfSS.gif 
  30   Tue Oct 30 13:58:07 2007 ajwConfigurationIOOMC RingdownsHere's a quick fit-by-eye to the latter part
of the data from tek00000.xls.
 CavityRingdown.pngCavityRingdown.m 
  40   Wed Oct 31 15:22:59 2007 robConfigurationIOOMode Cleaner transfer functionI measured the transfer function of the input
mode cleaner using a PDA255 and the ISS.
 First I put the PD in front of the ISS out-of-loop
 MCtf.pdf 
  45   Thu Nov 1 11:45:30 2007 tobinConfigurationIOOMode cleaner drag-wipingAndrey, Bob, David, John Miller, Rana, Rob,
Steve, Tobin
  
  67   Tue Nov 6 10:42:01 2007 robConfigurationIOOmode cleaner lockedIncreased the power exiting the PSL by turning
the half-wave plate after the MOPA, opened
the PSL shutter, and aligned the mode cleaner
  
  70   Tue Nov 6 15:37:34 2007 robConfigurationSUSrampdown script/cvs/cds/caltech/scripts/SUS/rampdown.pl is
now in the crontab for op340m, running every
half-hour at 15&45.  It checks the suspension
  
  71   Tue Nov 6 16:48:54 2007 tobinConfigurationComputersscopes on the netI configured our two 100 MHz Tektronix 3014B
scopes with IP addresses: 131.215.113.24
([url=http://scope0/]scope0[/url]) and 113.215.113.25
  
  72   Tue Nov 6 18:18:15 2007 tobinConfigurationComputersI broke (and fixed) conloggerIt turns out that not only restart_conlogger,
but also conlogger itself checks to see that
it is running on the right machine.  I had
  
  73   Tue Nov 6 23:45:38 2007 tobinConfigurationComputerstektronix scripts!I cooked up a little script to fetch the data
from the networked Tektronix scope.  Example
usage:
  
  74   Wed Nov 7 00:51:33 2007 andrey, rob, tobinConfigurationIOOMC ringdownsWe completed several ringdown measurements
this afternoon; Andrey is currently processing
the data.
  
  77   Wed Nov 7 10:55:21 2007 ajwConfigurationComputersbackup script restartedFollowing the reboot of computers on 10/31/07,
the backup script required restart (which
unfortunately "can't" be automated because
  
  78   Wed Nov 7 13:54:44 2007 robConfigurationIOOMode Cleaner transfer functionI performed the same procedure described [url=http://dziban.ligo.caltech.edu:40/40m/40]
here[/url], and re-measured the transfer
function of the mode cleaner to see the effect
 mctf.pdf 
  80   Wed Nov 7 14:05:59 2007 tobinConfigurationIOOMC ringdownModeling the mode cleaner as a simple cavity
with all losses lumped together, we expect
the cavity power to be
  
  84   Thu Nov 8 15:57:53 2007 tobinConfigurationPSLshelf removedI removed the sheet metal shelf from the PSL
enclosure, for easier access to the ISS.
  
  85   Thu Nov 8 18:44:01 2007 tobinConfigurationPSLISSTobin, Rob

With the Sense PD blocked, I adjusted the
  
  89   Fri Nov 9 17:33:33 2007 robConfigurationPSLISS
The 3.7 MHz is actually on the light.  It's
the beat between the 29.5 MHz sidebands and
  
  90   Fri Nov 9 21:36:14 2007 robConfigurationPSLFSSrob, rana

We looked at the FSS a bit today.  The most
  
  95   Mon Nov 12 15:05:49 2007 robConfigurationPSLFSS
Spent a bit of time fiddling with the FSS
again today.  In a not-particularly-systematic
  
  118   Tue Nov 20 13:06:57 2007 tobinConfigurationComputerslinux1 has new diskAlex put the new hard disk into linux1 along
with a fresh install of linux (CentOS). 
The old disk was too damaged to copy.
  
  124   Tue Nov 27 15:45:08 2007 robConfigurationPSLFSS loop
It's unclear (to me, at least) what was the
end result of the FSS path tweaking before
 FSSsmall.jpg 
  125   Tue Nov 27 15:47:17 2007 robConfigurationIOOMC loopAfter the FSS running pretty quick, I checked
the MC loop.  I used TPA 1&2.
 MCsmall.jpg 
  126   Tue Nov 27 16:18:58 2007 robConfigurationIOOMC loopReduced the common gain to 22dB in the [COLOR=blue]mcup[/COLOR]
script, so that the WFS would not blow the
lock.  The above measure of the OLG was done
  
  132   Wed Nov 28 16:46:28 2007 ranaConfigurationComputersscientific linux 5.0I tried installing Scientific Linux on Tiramisu.
The installation process was so bad (really)
that I quit after 15 minutes. Its back to
  
  133   Wed Nov 28 17:15:26 2007 ranaConfigurationSUSETMY damping / watchdogsSteve has noted that ETMY was often tripping
its watchdog. I saw this again today.
  
  137   Wed Nov 28 21:51:52 2007 tobinConfigurationPSLISSI replaced the front-end differential receivers
for the ISS's "inner-loop" sensor and monitor
diode inputs with lower-noise [url=http://focus.ti.com/docs/prod/folders/print/ths4131.html]THS4131[/url]'s
  
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