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ID Date Author Type Categoryup Subject Text Attachments
  5195   Thu Aug 11 16:09:05 2011 NicoleSummarySUSBode Plot for TT SuspensionAll of my plots have already taken into
account the calibration of the photosensor
(V/mm ratio)
 6x 
  5198   Thu Aug 11 18:30:40 2011 KojiUpdateSUSITMY OSEM adjustment[Jamie, Koji]
ITMX
OSEMs were adjusted so as to have the right
  
  5199   Thu Aug 11 19:01:45 2011 SureshUpdateSUSITMX given a kick to start it freeswing' but to no avail.We started an ITMX freeswing run at this
time
Thu Aug 11 18:58:59 PDT 2011
  
  5203   Fri Aug 12 03:52:51 2011 kiwamuUpdateSUSPRM OSEM adjustment[Suresh / Kiwamu]
 We
  
  5204   Fri Aug 12 04:11:13 2011 kiwamuUpdateSUSfree swingingExcited all optics - -
Fri Aug 12 03:34:12 PDT 2011
997180467
  
  5205   Fri Aug 12 11:07:50 2011 NicoleSummarySUSMore TT Shaking Completed This MorningThis morning (about 10am to 11am), I have
collected additional transfer function measurements
for the T.T. suspension. I have finished
  
  5206   Fri Aug 12 14:15:07 2011 NicoleSummarySUSBode Plot for TT SuspensionHere is my bode plot comparing the flexibly-supported
and rigidly-supported EDCs (both with no
bar)
 EXPrigidvsflex.jpg 
  5207   Fri Aug 12 15:16:56 2011 jamieUpdateSUStoday's SUS overviewHere's an update of the suspensions, after
yesterdays in-vacuum work and OSEM tweaking:

    PRM and ETMY are completely
 SRM.pngITMY.pngBS.png 
  5208   Fri Aug 12 15:34:16 2011 NicoleSummarySUSBode Plot for TT Suspension

    

       
            
 RIGIDexp_model.jpgflexmodcomp.jpg 
  5209   Fri Aug 12 15:46:51 2011 JenneUpdateSUSEarthquake stop procedureAccording to Rana, the following is
the "new" (should always have been
used, but now we're going to enforce it)
  
  5215   Fri Aug 12 17:37:11 2011 JenneUpdateSUSETMY hopefully good again[Jamie, Jenne]
We went in to have a look-see at
ETMY since it looked stuck-ish.  Jamie
  
  5216   Fri Aug 12 20:28:13 2011 JenneUpdateSUSETMY hopefully good again


   
        
            
  
  5219   Sat Aug 13 01:54:18 2011 kiwamuUpdateSUSPRM OSEM adjustment part IIAdjustment  before.pngafter.png 
  5220   Sat Aug 13 02:11:33 2011 kiwamuUpdateSUSfree swinging againI am leaving all of the suspensions
free swinging. They will automatically recover
  
  5221   Sat Aug 13 02:31:42 2011 kiwamuUpdateSUSRe: ETMY hopefully good againI guess the ETMY suspension is still fine.
Their OSEM DC voltage and the free swinging
spectra look healthy.
  
  5222   Sat Aug 13 15:40:38 2011 NicoleSummarySUSTT Shaking Today and Hopefully More?As reported in my  previous
entry of TT supsension bode plots, I
found that my experimental data had what
 emnoise_and_flex.jpg 
  5223   Sat Aug 13 15:47:47 2011 NicoleSummarySUSTT Optimization CurvesUsing my Matlab model of the flexibly-supported
eddy current damping system, I have changed
parameters to see if/how the TTs can be optimized
 magstrength1.jpgdampermass.jpgresfreq.jpg 
  5224   Sat Aug 13 19:08:01 2011 KojiSummarySUSTT Optimization CurvesWhat are the parameters you are using?
As you have the drawings of the components,
you can calculate the masses of the objects.
  
  5225   Sat Aug 13 21:15:47 2011 NicoleSummarySUSTT Optimization Curves


   
        
            
  
  5226   Sat Aug 13 21:48:17 2011 KojiSummarySUSTT Optimization Curves1) Drawing has the dimensions => You
can calculate the volume => You can calculate
the mass
  
  5227   Sun Aug 14 00:26:51 2011 NicoleSummarySUSTT Optimization Curves

    
        
  
  5229   Sun Aug 14 13:57:52 2011 NicoleSummarySUSTT Optimization Curves

    

       
            
 FLEX_exp_mod_comp.jpg 
  5231   Sun Aug 14 17:47:39 2011 NicoleSummarySUSTT Shaking Today and Hopefully More?

    

       
            
 noisetest.jpg 
  5234   Sun Aug 14 22:48:37 2011 kiwamuUpdateSUSfree swinging againExcited all optics
Sun Aug 14 20:22:33 PDT 2011
997413768
  
  5235   Mon Aug 15 10:02:27 2011 kiwamuUpdateSUSBS OSEM adjustment done[Suresh / Kiwamu]
 Adjustment of the OSEMs on BS
  
  5237   Mon Aug 15 13:16:50 2011 JenneUpdateSUSRe: ETMY hopefully good again


   
        
            
  
  5239   Mon Aug 15 14:10:56 2011 JenneUpdateSUSMonday SUS updateThe
moral of the story here is that none of the
suspensions are overwhelmingly awesome, but
 7x 
  5240   Mon Aug 15 17:23:55 2011 jamieUpdateSUSfreeswing script updatedI have updated the freeswing scripts, combining
all of them into a single script that takes
arguments to specify the optic to kick:
  
  5241   Mon Aug 15 17:36:10 2011 jamieUpdateSUSStrangeness with ETMY (was: Monday SUS update)For some reason ETMY has changed a lot. 
Not only does it now have the worst "badness"
(B matrix condition number) at ~10, but the
  
  5244   Tue Aug 16 04:25:34 2011 Suresh, KiwamuUpdateSUSalignment of MC output to Y-arm using PZTsWe did several things today+night. 
The final goal was to lock the PRC so that
we could obtain the POX, POY and POP beams. 
  
  5246   Tue Aug 16 04:50:17 2011 kiwamuUpdateSUSfree swinging again Since Suresh and I changed the DC
biases on most of the suspension, the free
swingning spectra will be different from
  
  5247   Tue Aug 16 10:59:06 2011 jamieUpdateSUSSUS updateData taken from: 997530498+120
Things are actually looking ok at
the moment.  "Badness" (cond(B))
 6x 
  5255   Wed Aug 17 15:47:18 2011 AnamariaUpdateSUSETMX Side Sensor slow channel down for a long timeJenne, Anamaria
We aligned the ETMX OSEMs and ran
into this issue. Looking at the SENSOR_SIDE
  
  5260   Thu Aug 18 00:58:40 2011 jamieUpdateSUSoptics kicked and left free swingingALL optics (including MC) were kicked and
left free swinging at:
997689421
  
  5261   Thu Aug 18 10:17:04 2011 kiwamu, steveUpdateSUSoplevs reestablished at VertexKiwamu and Steve, from yesterday
PRM and BS oplev paths were relaid
after setting 1/2 OSEM voltages. The incident
  
  5263   Thu Aug 18 12:22:37 2011 jamieUpdateSUSsuspension updateMost of the suspension look ok, with "badness"
levels between 4 and 5.  I'm just posting
the ones that look slightly less ideal below.
 6x 
  5264   Thu Aug 18 15:54:35 2011 steveUpdateSUSdamped and undamped OSEMsdamped sus at atm1 and freeswingging sus
at atm2
 
 5susLL.jpg8freeSUSLL.jpg 
  5266   Fri Aug 19 01:15:22 2011 SureshUpdateSUSFreeSwing all opticsI ran "freeswing all" at Fri
Aug 19 01:09:28 PDT 2011 (997776583) 
and "opticshutdown"  as well.
  
  5269   Fri Aug 19 10:26:53 2011 steveUpdateSUSOSEM sensor spectraFree swingging OSEM sensors LL at atm  8freeSUSosemSensors.jpg 
  5282   Tue Aug 23 01:09:44 2011 kiwamuUpdateSUSfree swinging testexcited all the optics ---
Tue Aug 23 01:08:00 PDT 2011
998122096
  
  5286   Tue Aug 23 10:38:27 2011 jamieUpdateSUSSUS updateSUS update before closing up:

    MC1, MC2, ITMX look good

   MC3, PRM look ok
    SRM
 9x 
  5287   Tue Aug 23 11:57:22 2011 kiwamuUpdateSUSfree swinging test during lunch timeexcited all the optics. (with ITMY WTF
OFF)
Tue Aug 23 11:52:52 PDT 2011
  
  5288   Tue Aug 23 14:49:14 2011 jamie, jenne, kiwamu, suresh, keikoUpdateSUSAdjustment of ETMY, issue with ITMY whiteningBefore lunch we took a closer look at two
of the suspensions that were most problematic:
ITMY and ETMY.  Over lunch we took new
 ITMY.pngETMY.png 
  5290   Tue Aug 23 17:21:45 2011 kiwamuUpdateSUSfree swinging test for ETMY 
Excited ETMY
Tue Aug 23 17:20:45 PDT 2011
  
  5291   Tue Aug 23 17:45:22 2011 jamieUpdateSUSITMX, ITMY, ETMX clamped and moved to edge of tablesIn preparation for tomorrow's drag wiping
and door closing, I have clamped ITMX, ITMY,
and ETMX with their earthquake stops and
  
  5293   Tue Aug 23 18:25:56 2011 jamieUpdateSUSSRM diagnalization OKBy looking at a longer data stretch for
the SRM (6 hours instead of just one), we
were able to get enough extra resolution
 SRM.png 
  5294   Wed Aug 24 09:11:19 2011 jamieUpdateSUSETMY SUS update: looks good. WE'RE READY TO CLOSEWe ran one more free swing test on ETMY
last night, after the last bit of tweaking
on the SIDE OSEM.  It now looks pretty
 ETMY.png 
  5295   Wed Aug 24 11:30:27 2011 jamie, jenne, kiwamu, suresh, steveUpdateSUSETMX wiped, replaced, door onWe've closed up ETMX:

    the optic was drag wiped

   the suspension tower was put back
  
  5296   Wed Aug 24 11:40:21 2011 jamie, jenne, kiwamu, suresh, steveUpdateSUSproblem with ITMXITMX was drag wiped, and the suspension
was put back into place.  However, after
removing all of the earthquake stops we found
  
  5297   Wed Aug 24 12:08:56 2011 jamieUpdateSUSITMX, ETMX, ETMY free swingingITMX: 998245556
ETMX, ETMY: 998248032
  
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