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  40m Log, Page 283 of 341  Not logged in ELOG logo
ID Date Author Type Category Subjectup Text Attachments
  4992   Tue Jul 19 21:05:55 2011 haixingUpdateDAQchoose the right relayRana and I are working on the AA/AI circuit
for Cymac. We need relays to bypass certain
paths in the circuit, and we just found a
  
  1709   Tue Jun 30 23:09:40 2009 AlbertoUpdateLockingchronicles of some locking attemptsTonight I tried to lock the interferometer.
At the first attempts the arm power didn't
go above about 4. The mode cleaner seemed
  
  12802   Mon Feb 6 10:05:28 2017 SteveUpdateSUSclamped cablesThe bottom 5 cable connections from Sat-Amp
to Whittering Filter at 1X5 were clamped
today.
 clamped.jpg 
  7146   Fri Aug 10 17:17:41 2012 Alex Masha DenUpdatePEMclassify seismic c codeDen and I installed a module in the c1pem
model which has a feedforward neural network
to classify seismic disturbance (10 means
  
  7147   Fri Aug 10 17:38:29 2012 DenUpdatePEMclassify seismic c code

    

       
            
  
  11707   Thu Oct 22 08:52:04 2015 SteveUpdateVACclean RGA scan after sweaty MaglevClean comparable scan at vacuum normal.
There was no backstreaming.
 clean_scan.png 
  8004   Tue Feb 5 15:31:03 2013 SteveUpdateGeneralclean assembly room benches cleaned upManasa, Jamie and Steve,
Tip-Tilts and parts moved into the
most north " 40m "  cabinet 
 IMG_0057.JPGIMG_0061.JPG 
  5158   Tue Aug 9 16:40:12 2011 steveUpdateGeneralclean room coat counts I measured the particles coming off of
new- unused clean room coat. Tyvek, Convertors,
Allegiance #9393 measured  10 counts
 P1080155.JPG 
  5303   Thu Aug 25 17:14:49 2011 steveUpdateVACclean room fashion changesJamie is modeling our next generation 
in-vac
& clean room bonny suit  that Jenne
 P1080185.JPGP1080183.JPG 
  4386   Tue Mar 8 15:23:16 2011 steveUpdatePEMclean room glovesAnsell
AccuTech
91-300 clean
  
  3705   Wed Oct 13 11:09:28 2010 yutaUpdateComputersclean-installed CentOS 5.5 on mafaldaDear mafalda,
Sorry for leaving you alone.
We put ethernet cable in you. You
  
  3585   Fri Sep 17 17:35:35 2010 steveUpdatePEMcleaned up at 1Y1 PSL rackCleaned up cables on the top and bottom.
Vacuumed both areas. We still have some remaining
shading from the MOPA umbilical and more
  
  11388   Wed Jul 1 11:45:48 2015 SteveUpdatePEMcleaning around ETMX chamber


  
  11372   Tue Jun 23 11:18:20 2015 SteveUpdatePEMcleaning around chambersKeven is our regular janitor is out for
a few weeks.

The sub is careful- gentel Mario.
  
  9914   Tue May 6 09:46:50 2014 steveUpdatePEMcleaning day Keven and Steve,
We cleaned around the Vertex chambers,
PSL and MC2 floor areas.
 120d.png 
  4952   Thu Jul 7 10:25:34 2011 steveHowToGeneralcleaning out refregeratorPlease ask the owner unless  it is
rotten. Do not put food into garbage can
inside. Take them outside so you are not
  
  9092   Fri Aug 30 14:31:57 2013 SteveUpdateGeneralcleaning upI cleaned up around MC2 and 1Y1 area this
morning.
ETMY NPRO moved from the side to
 MC2areaCP.jpg1Y1areaCleanedUp.jpgETMY_NPROmoved.jpg 
  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 
  8732   Thu Jun 20 09:33:42 2013 SteveUpdateGeneralcleanupOffice work benches were cleaned up yesterday.
Anti-image filter boards were moved to north
wall of the control room. Koji's pd- electronics
 tmc3x2.jpg 
  8518   Wed May 1 10:42:35 2013 SteveUpdateLSCcleanup  
 Optics from the car were placed
into glass door cabinet E0
  
  16796   Thu Apr 21 16:36:56 2022 TegaUpdateVACcleanup work for vacuum git repogit repo - https://git.ligo.org/40m/vac

Finally incorporated the FRGs into
the main modbusIOC service and everything
  
  2124   Tue Oct 20 10:46:18 2009 steveUpdateIOOclipping IP-ANG beam at ETMX chamberInitial pointing beam is clearly clipping
on 2" pick off mirror in  ETMX
vacuum chamber.
 PA200175.JPGPA200177.JPG 
  12811   Wed Feb 8 10:16:39 2017 steveUpdateSUSclipping ITMX oplevThe ITMX oplev beam is clipping. It will
be corected with locked arm

 
 ITMX_oplev_clipping.jpgITMX_clipping.jpg 
  13861   Fri May 18 07:41:01 2018 steveUpdateSUSclipping ITMX oplevThe ITMX oplev
still clipping

  
  6902   Mon Jul 2 10:45:25 2012 JenneSummaryGeneralclipping at BS

    

       
            
  
  6900   Sun Jul 1 23:48:15 2012 yutaSummaryGeneralclipping at BS, my plan[Koji, Yuta]

We aligned PRMI and inspected BS chamber.
 PR3.JPGPRM.JPG 
  6901   Mon Jul 2 00:41:13 2012 ranaSummaryGeneralclipping at BS, my plan 
 Start pumping on Monday before
Steve goes home.
  
  8114   Wed Feb 20 03:13:10 2013 yutaUpdateAlignmentclipping centering checklistI attached clipping/centering checklist
for the alignment.
Blue
 ClippingCenteringChecklist.pdf 
  8122   Wed Feb 20 20:58:37 2013 yutaUpdateAlignmentclipping centering checklistBlue
ones are the ones we checked yesterday.
Green
 ClippingCenteringChecklist.pdf 
  8123   Wed Feb 20 21:12:37 2013 ranaUpdateAlignmentclipping centering checklist 
 Is the beam going towards the
OMC going to cause backscatter because of
  
  8124   Wed Feb 20 21:56:08 2013 yutaUpdateAlignmentclipping centering checklistI'm not sure about the OMC situation at
40m. I think there are no direct beam reflected
back into IFO from OMC path. There must be
  
  9628   Wed Feb 12 14:59:36 2014 SteveUpdateSUSclipping removed from PRM oplev The input pointing of PRM oplev beam
was streered just a touch to remove clipping
from it's return. 
 PRMoplPointing.jpgPRMoplevReturn.jpg 
  9629   Wed Feb 12 19:37:05 2014 JenneUpdateSUSclipping removed from PRM oplevI'm not happy with the beam position on
that first lens, but since it's so crazy
in the BS chamber, and the PRM oplev has
  
  5709   Thu Oct 20 04:47:37 2011 kiwamuUpdateLSCclipping search round 1[Koji / Kiwamu]
 
We tried finding a possible clipping in the
  
  3368   Thu Aug 5 16:18:37 2010 AlastairUpdateGeneralclocks still not locked fully - hut removedThe rubidium clocks are still not quite
locked together, though it is clear that
the beat frequency has dropped a lot since
  
  3377   Fri Aug 6 16:20:08 2010 ranaUpdateGeneralclocks still not locked fully - phase shifted I tried to get the clocks to be closer
to 90 deg for the relative phase by adding
some cable length to one of the lines, but
 Untitled.pdf 
  5613   Tue Oct 4 15:43:10 2011 KojiUpdateIOOclosed the shutter before the MCThe shutter before the MC was closed at
3:30 as I started working on the RFAM.
MC REFL (INLOCK): 0.6~0.7
  
  5617   Tue Oct 4 19:06:46 2011 KojiUpdateIOOclosed the shutter before the MCFinished the work at 6:30
MC REFL (INLOCK): 0.50-0.52
MC REFL (UNLOCK): 6.9
  
  12705   Thu Jan 12 10:14:49 2017 SteveHowTosafetyclosing a doorThe door was not locked this morning.

Please do not use this door if
you can not close it!
 odc.jpghowtocloseadoor.jpg 
  12706   Thu Jan 12 13:43:02 2017 ranaHowTosafetyclosing a doorThis is one of those unsolved door lock
acquisition problems. Its been happening
for years.
  
  12707   Thu Jan 12 13:45:58 2017 SteveHowTosafetyclosing a doorIt was requested this morning.




  
  8785   Fri Jun 28 14:57:15 2013 SteveUpdateGeneralclosing lab doorsI found the south end emergency doors not
latched completely. There was a ~ 3/8"
vertical gap from top to bottom.
  
  6072   Mon Dec 5 19:21:55 2011 kiwamuUpdateLSCcoarse beat note signal : ADC limited above 30 HzThe
signal observed by the coarse frequency discriminator
was actually dominated by the ADC noise above
 Yarm_ALS_coarse.png 
  3850   Wed Nov 3 02:37:39 2010 yutaSummaryGreen Lockingcoarse locked green beat frequency(Kiwamu, Yuta)

 Screenshot_LowFreqLock.png 
  3851   Wed Nov 3 03:00:47 2010 KojiSummaryGreen Lockingcoarse locked green beat frequencyWow! Great guys!!   
  6779   Thu Jun 7 05:39:41 2012 yutaUpdateGreen Lockingcoarsely stabilized Y arm length with ALSI coarsely stabilized Y arm length to off
resonance point for IR using ALS.
Currently, ASL servo loop is unstable
 MyFirstALS20120607.png 
  9087   Wed Aug 28 23:09:55 2013 jamieConfigurationCDScode to generate host IPC graph   hosts.png40m-ipcs-graph.py 
  13140   Tue Jul 25 00:03:01 2017 ranaOmnistructureTreasurecoffee pot lidI
have recommissioned the Zojirushi coffee
pot lid. You may, once again, align the dots
  
  5816   Fri Nov 4 21:52:58 2011 DenUpdateAdaptive Filteringcoherence[Mirko, Den]
We still think about the coherence
between seismic noise and mode cleaner length.
 mirror_platform.jpgcoherence.jpgScreenshot-4.png 
  5825   Sun Nov 6 21:09:03 2011 ranaUpdateAdaptive Filteringcoherence


   
        
            
  
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