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IDup Date Author Type Category Subject Text Attachments
  3178   Thu Jul 8 15:19:27 2010 josephb, kojiConfigurationComputersAdded Zonet camera to IP table on linux1We gave the Zonet camera the IP 192.168.113.26
and the name Zonet1.
We did this by modifying the /var/named/chroot/var/named/113.168.192.in-addr.arpa.zone
  
  3179   Thu Jul 8 15:43:58 2010 ranaUpdateComputersSome channels not being recorded!!!

    
        
 3-monkeys-ComicPosition.gif 
  3180   Thu Jul 8 16:24:30 2010 GopalUpdateOptic StacksCompletion of single stack layerSingle layer of stack successfully modeled
in COMSOL. I'm working on trying to add Viton
springs now and extend it to a full stack.
  
  3181   Thu Jul 8 17:29:20 2010 Katharine, SharmilaUpdateelog 


 6x 
  3182   Thu Jul 8 19:43:16 2010 nancyUpdateIOOWFS calculationsThe WFS error signals were recorded in
the order 
WFS1_PIT
  
  3183   Thu Jul 8 20:32:22 2010 nancyUpdateIOOMC alignment values.I and Koji were trying to lock the mode
cleaner for measuring the  beam power at
MC2 end. That is when we obtained the trans
  
  3184   Thu Jul 8 21:44:43 2010 nancyUpdateIOOWFS calculations 
I just found the singular values
and the condition number of the 4*4 matrix
  
  3185   Fri Jul 9 11:09:14 2010 josephbUpdateComputersFb40m and a few other machines turned off briefly just before 11amI turned off fb40m2 and fb40m temporarily
while we added an extra power strip 
to the (new) 1X6 rack at the bottom in the
  
  3186   Fri Jul 9 11:41:58 2010 GopalSummaryOptic StacksTop Optic Layer Complete; Mechanical Tests Giving Problems



 7x 
  3187   Fri Jul 9 12:07:26 2010 RazibUpdatePhase CameraWeekly updateHere are some more details about the current
phasecam setup. We are using a He-Ne laser
setup
 phase_cam_setup_09_08_10.jpgmod_setup_(copy)_annotated.jpg 
  3188   Fri Jul 9 12:25:25 2010 kiwamuUpdateGreen LockingSHG on PSL tableIn order
to increase the green power on the PSL table,
 PSL_doubling.png 
  3189   Fri Jul 9 20:16:19 2010 ranaSummaryPSLThings I did to the PSL today: Refcav, PMC, cameras, etc.I re-aligned the beam into the PMC. I got
basically no improvement. So I instead changed
the .LOW setting so that PMCTRANS would no
  
  3190   Sun Jul 11 20:11:48 2010 ranaSummaryPSLRC trend after the insulation removal   rc.png 
  3191   Mon Jul 12 02:21:01 2010 KojiConfigurationASCResurrection of MC WFSI have resurrected the MC WFS on Friday
night.
I have uncommented the WFS part of
  
  3192   Mon Jul 12 10:23:51 2010 steveUpdatePEMair condition maintenance is todayThe AC filters will be checked and/or replaced
today. This means the AC will be off for
sort periods of time. Temperature and particle
 pem2y.jpg 
  3193   Mon Jul 12 11:20:56 2010 Gopal HowToCOMSOL TipsIntrusions (Negative Extrusions)For the sake of future users, I have decided
to periodically add tips and tricks in using
COMSOL that I have figured out, most probably
 6x 
  3194   Mon Jul 12 12:16:50 2010 DmassHowToCOMSOL TipsIntrusions (Negative Extrusions) An entry on the 40m wiki page might
serve you better, and be easier to  sift
through once all is said and done
  
  3195   Mon Jul 12 13:16:53 2010 kiwamuUpdateGreen LockingPZT feedback at X endThe
feedback signal going to the laser PZT at
the X end station was measured in 
 arm_day_night.png 
  3196   Mon Jul 12 14:22:36 2010 JenneSummaryPSLThings I did to the PSL today: Refcav, PMC, cameras, etc.


   
        
            
  
  3197   Mon Jul 12 15:49:56 2010 nancyUpdateSUSCharacterisation of the QPDI and koji setup the measurement of the
QPD response to the pitch and yaw displacements
of the beam spot.
 fullyaw.jpgyaw_linear.jpgfullpitch.jpgpitch_linear.jpg 
  3198   Mon Jul 12 17:05:30 2010 nancyUpdateSUSCharacterisation of the QPD

    
        
 plot.pngplot.png 
  3199   Mon Jul 12 18:37:10 2010 GopalUpdateOptic StacksEigenfrequency Analysis of Simple ObjectsEigenfrequency analysis has been successfully
completed in COMSOL on both a tutorial camshaft,
as well as a homemade metal bar.
  
  3200   Mon Jul 12 21:26:02 2010 Katharine, SharmilaUpdateelogmaglev coilsThe connection between our coil wires and
BNC terminals was pretty awful (soldered
wires broke off 
 P7120276.JPG 
  3201   Mon Jul 12 22:01:13 2010 KojiUpdateSUSOne TT suspended. Still need fine alignmentJenne and Koji
We tweaked the alignment of the TT
mirror.
 IMG_2634.jpg 
  3202   Tue Jul 13 10:02:30 2010 steveUpdateMOPAlaser power is dropping slowlyI have just removed an other 400 cc of
water from the chiller.  I have been
doing this since the HTEMP started fluctuating.
 power100d.jpg 
  3203   Tue Jul 13 11:00:29 2010 kiwamuUpdateGreen LockingSHG on PSL table : optimum temepratureThe optimum
temperature for the doubling crystal on the
 power_temp.png 
  3204   Tue Jul 13 11:20:07 2010 DmassUpdateGreen LockingSHG on PSL table : optimum temeprature 
 It seems like you might inherit
an offset by using step (3) b/c of the temperature
  
  3205   Tue Jul 13 11:51:19 2010 JenneUpdatePEMGur1 has no signal?!?!?!?![Sanjit, Jenne]
Sanjit discovered that the Gur1 channels
are all digital 0.  We determined that
 Gur1_noSignal_13Jul2010.png 
  3206   Tue Jul 13 13:56:29 2010 GopalConfigurationOptic StacksVitol Material PropertiesViton flouroelastomers have somewhat variable
material properties. The following parameters
are being used for eigenfrequency analysis.
  
  3207   Tue Jul 13 14:59:04 2010 GopalUpdateOptic StacksEigenfrequency Analysis of Single Stack CompleteVia reconfiguration of Viton parameters
(previously posted), I managed to debug the
COMSOL run time errors and null pointer exceptions.
 Eigenmode_Stack_4.pngEigenmode_Stack_4_xdisp.pngEigenmode_Stack_4_ydisp.pngEigenmode_Stack_4_zdisp.png 
  3208   Tue Jul 13 17:36:42 2010 nancyUpdateIOOWavefront Sensing Matrix ControlFor yesterday - July 12th.
Yesterday, I tried understanding
the MEDM and the Dataviewer screens for the
  
  3209   Tue Jul 13 19:26:47 2010 ranaUpdateIOOMC still brokenAfter whatever Joe/Alberto did this afternoon,
the MC was not locking. Koji and I removed
several of the cables in the side of the
 a.txt.gz 
  3210   Tue Jul 13 21:04:49 2010 tara,ranaSummaryPSLTransfer function of FSS servo I
measured FSS's open loop transfer function.
 TF_FSS_ser.png 
  3211   Tue Jul 13 23:20:37 2010 JenneUpdatePEMGur1 has no signal?!?!?!?!

    
        
  
  3212   Wed Jul 14 01:05:27 2010 Sharmila,KatharineSummaryelogMaglevYesterday we hooked up the Quadrant Maglev
control to the power supply to test the components
in the Input/Output part of the circuit.
 P7120284.JPGP7120278.JPGP7120281.JPGP7140292.JPG 
  3213   Wed Jul 14 10:00:14 2010 josephbUpdatePhase CameraWork near 1Y2 yesterdayRazib and I were attempting to get the
output of a photodiode (PD55A in this case)
recorded, so that we could independently
  
  3214   Wed Jul 14 11:32:36 2010 Sharmila, KatharineUpdateWIKI-40M Update Weekly update:

We correctly connected our circuit
  
  3215   Wed Jul 14 11:51:48 2010 RazibUpdatePhase CameraWork near 1Y2 yesterday


   
        
            
  
  3216   Wed Jul 14 11:54:33 2010 josephbUpdateDAQDebugging Guralp and rebootsThis is regards to zero signal being reported
by the channels C1:PEM-SEIS_GUR1_X, C1:PEM-SEIS_GUR1_Y,
and C1:PEM-SEIS_GUR1_Z.
  
  3217   Wed Jul 14 12:12:03 2010 RazibSummaryPhase CameraWeekly updateThis week I was mainly interested in investigating
the noise source at the phase camera. So
having this issue in mind, my activities
  
  3218   Wed Jul 14 12:31:11 2010 nancyUpdateGeneralWeekly UpdateSummary of this week's work  


Wednesday
- Aligned the mode cleaner with Koji, and
then measured the beam characteristics at
  
  3219   Wed Jul 14 13:03:04 2010 Gopal UpdateWIKI-40M Update7.8.10 - 7.14.10 Weekly UpdateSummary of this Week's Activities:
Wed. 7/7: COMSOL Busbar tutorials;
began stack design; began base; Viton rubber
  
  3220   Wed Jul 14 16:39:06 2010 JenneUpdateDAQDebugging Guralp and reboots[Joe, Jenne]
Joe got on the phone with Alex, and
Alex's magic Alex intuition told him to ask
  
  3221   Wed Jul 14 18:09:50 2010 josephb, razibUpdatePhase CameraSome cleanup behind 1Y2 rack of phasecamera electronicsWe made an attempt at cleaning up the phase
camera setup electronics.
We have moved a portion of the electronics
  
  3222   Wed Jul 14 19:00:56 2010 GopalConfigurationOptic StacksVitol Material Properties, REVISED

    
        
  
  3223   Wed Jul 14 19:15:26 2010 GopalSummaryOptic StacksREVISION: Eigenfrequency Analysis of Single Stack CompleteMy previous eigenfrequency analysis
was incorrect by two orders of magnitude
due to the misuse of Young's Modulus information
 Eigenfrequency_1_Stack4.pngEigenfrequency_2_Stack4.pngEigenfrequency_2_Stack4.pngEigenfrequency_3_Stack4.pngEigenfrequency_4_Stack4.png 
  3224   Wed Jul 14 19:36:17 2010 GopalUpdateOptic StacksExperimental Confirmation of COMSOL AnalysisI experimentally determined the spring
constant of a single Vitol spring in
order to obtain a rough estimate for the
 Untitled.png 
  3225   Wed Jul 14 20:15:04 2010 DmassBureaucracyCamerasIR OlympusI borrowed the Olympus and forgot to leave
a note - I should have it for at most a day.
dmassey@ligo if you need it urgently
  
  3226   Thu Jul 15 11:58:50 2010 josephbUpdateComputersAdded channel to ADCU_PEM (C0DCU1)I modified the C1ADCU_PEM.ini file in /cvs/cds/caltech/chans/daq/
(after making a backup), and added a temporary
channel called C1:PEM-TEMP_9, the 9 corresponding
  
  3227   Thu Jul 15 12:21:08 2010 AlbertoConfigurationLSCPRC and SRC length adjustementsLately I've been trying to calculate the
corrections to the recycling cavity lengths
that would compensate for the phase that
 8x 
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