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  40m Log, Page 294 of 344  Not logged in ELOG logo
ID Date Author Type Categoryup Subject Text Attachments
  5299   Wed Aug 24 17:05:11 2011 JenneUpdateSUSBroken UL magnet on ITMX

    

       
            
  
  5300   Thu Aug 25 08:12:09 2011 steveUpdateSUSETMY & ITMY wiped, replaced, vac door on


   
        
            
  
  5301   Thu Aug 25 13:10:42 2011 JenneUpdateSUSDrag wipingAs we have seen in the past, both of the
ITMs were more dusty than the ETMs, presumably
because we have the vertex open much more
  
  5302   Thu Aug 25 15:20:03 2011 JenneUpdateSUSBroken UL magnet on ITMXDmass just reminded me that the usual procedure is to bake the   
  5305   Thu Aug 25 17:57:35 2011 SureshUpdateSUSBroken UL magnet on ITMX
  
  5306   Fri Aug 26 07:53:59 2011 steveUpdateSUSBroken UL magnet on ITMX

    

       
            
  
  5308   Fri Aug 26 15:30:36 2011 JenneUpdateSUSITMX magnet reglued[B][COLOR=green][SIZE=3][SIZE=2]The ITMX UL
magnet has been reglued. [/SIZE][/SIZE][/COLOR][/B]
  
  5311   Sat Aug 27 14:33:04 2011 JenneUpdateSUSITMX magnet statusAs I feared, since I couldn't see the magnet-to-dumbbell
joint from all angles, they ended up being
off by ~1/3 of a magnet diameter. 
  
  5314   Sun Aug 28 20:15:11 2011 JenneUpdateSUSITMX magnet status

    
        
  
  5318   Mon Aug 29 16:27:34 2011 ManuelConfigurationSUSSUS Summary ScreenI edited the C1SUS_SUMMARY.adl file and
set the channels in alarm mode to show the
values in 
  
  5320   Mon Aug 29 18:24:11 2011 jamieUpdateSUSITMY stuck to OSEMs?ITMY, which is supposed to be fully free-swinging
at the moment, is displaying the tell-tale
signs of  being stuck to one of it's
  
  5322   Tue Aug 30 10:49:29 2011 steveUpdateSUSBS & PRM damping restoredI have restored the damping of BS and PRM.
Today is janitor day. He is shaking things
around the lab.
  
  5326   Tue Aug 30 14:44:06 2011 kiwamuUpdateSUSITMY released without opening chambersThe
ITMY mirror was released. The OSEM readouts
became healthy.
  
  5332   Thu Sep 1 15:07:45 2011 steveUpdateSUSwhy ITMY is moving more ?Atm1, ITMY and the SRM are on the same
isolation stack.  So why does 
the SRM move twice as much?
 itmy_srm_etmx.jpgP8220152.JPG 
  5333   Thu Sep 1 15:59:46 2011 steveUpdateSUSlight doors on at the ITMsSuresh, Kiwamu and Steve
Heavy chamber doors replaced by light
ones at  ITMX-west and ITMY-north locations.
  
  5337   Fri Sep 2 17:52:16 2011 kiwamuUpdateSUSITMX realignedThe new ITMX
was aligned by changing the DC biases.
  
  5338   Fri Sep 2 17:57:18 2011 kiwamuUpdateSUSRe: ITMY released without opening chambersIt
stacked again 
  
  5341   Tue Sep 6 08:05:53 2011 steveUpdateSUSITMX must be touching


   
        
            
 osemITMX.jpg 
  5342   Tue Sep 6 11:21:33 2011 JenneUpdateSUSITMX rehung (Friday)[Jenne, Katrin, Jamie]
I'm a bad kid, and forgot to elog
my Friday morning work...
  
  5345   Tue Sep 6 17:48:57 2011 kiwamuUpdateSUSfree swinging test on ITMYTue Sep  6 17:48:02 PDT 2011
999391697
  
  5346   Tue Sep 6 17:56:12 2011 JenneUpdateSUSfree swinging test on ITMX


   
        
            
  
  5349   Tue Sep 6 21:33:21 2011 JenneUpdateSUSDiagonalizability of ITMX and ITMY is acceptable[Rana and Kiwamu on ITMX, Jenne and Suresh
on ITMY, Zombie/brains meeting on accepting
the matricies]
 ITMX.pngITMY.png 
  5352   Wed Sep 7 00:39:34 2011 ranaUpdateSUSITMX adjustments(What we did)
* Moved SUS to edge of table for
OSEM adjustment.
  
  5353   Wed Sep 7 00:44:51 2011 JenneUpdateSUSFreeswing allI just started a freeswing all,
as a final check before we pump:
  
  5355   Wed Sep 7 08:14:01 2011 steveUpdateSUSfinal OSEM checkAll fine, except ITMX_sensor_UL's 
60  counts deep hoop for an hour.
 finalcheck.jpgITMX10min.jpgfinalsum.png 
  5356   Wed Sep 7 09:21:57 2011 jamieUpdateSUSSUS spectra before close upHere are all suspension diagonalization
spectra before close up. Notes:

    TMX looks the worst, but
 9x 
  5370   Fri Sep 9 14:55:03 2011 kiwamuUpdateSUSOSEM pictures on ITMsThe OSEM pictures taken in Sep/6 have
been uploaded to Picasa.
https://picasaweb.google.com/foteee
  
  5375   Sat Sep 10 02:28:45 2011 kiwamuUpdateSUSfree swinging test in vacuum conditionAll the optcs were excited
Sat Sep 10 02:14:11 PDT 2011
999681266
  
  5376   Sat Sep 10 11:07:37 2011 ranaHowToSUSOptical Lever Servo Tuning thoughtsNow that we are in a moderately   
  5403   Wed Sep 14 07:51:20 2011 steveUpdateSUSPRM damping restoredThe PRM damping was restored at side sensor
var 1050
  
  5409   Wed Sep 14 20:30:36 2011 ranaUpdateSUSSome screens are still badI've found that a few of the screens still
have Whited-Out fields due to naming changes
(OL SUM and ALS-> TM OFFSET). I attach
 Untitled.png 
  5411   Wed Sep 14 22:07:41 2011 ranaUpdateSUSITM Oplevs are brokenI went to see what was wrong with the ITMs
and found that people have been working on
them and have left them in a broken state
 mm.jpg 
  5415   Thu Sep 15 07:28:08 2011 steveUpdateSUSPRM damping restored


   
        
            
  
  5417   Thu Sep 15 15:11:38 2011 kiwamuUpdateSUSf2a filters on BS and PRMThe f2a
filters were newly designed and installed
 PRMf2a.pngBS_f2a.png 
  5418   Thu Sep 15 16:45:59 2011 PaulUpdateSUSITMY and SRM Oplev statusToday I worked on getting the ITMY and
SRM oplevs back in working order. I aligned
the SRM path back onto the QPD. I put excitations
  
  5419   Thu Sep 15 17:00:10 2011 Paul and SteveUpdateSUSNew ITMY and SRM oplev plan We have made a new plan for the ITMY
and SRM oplev optical path which uses as
few optics as possible. This should help
 oplev_plan1.png 
  5421   Thu Sep 15 18:12:21 2011 JenneUpdateSUSfree swinging test in vacuum condition

    

       
            
 9x 
  5422   Thu Sep 15 18:24:54 2011 PaulUpdateSUSITMY and SRM Oplev current status - comparison with ITMYJust to find out where we are currently,
I plotted the ITMY and SRM oplev spectra
along with the ETMY oplev spectra. ETMY seems
 oplev_spectra_comparison.pdf 
  5423   Thu Sep 15 18:31:27 2011 PaulUpdateSUSITMY and SRM Oplev current status - comparison with ITMY

    

       
            
  
  5427   Thu Sep 15 22:26:32 2011 PaulUpdateSUSITMY Oplev QPD dark noise PSD I took a dark noise measurement for
the ITMY QPD, for comparison with measurements
of the oplev noise later on. Initially I
 ITM_dark_QPD_PSD.pdf 
  5428   Thu Sep 15 22:31:44 2011 ManuelUpdateSUSSummary screenI changed some colors on the Summary
of Suspension Sensor  using
my italian creativity.
 sussum.png 
  5429   Fri Sep 16 00:08:30 2011 PaulUpdateSUSITMY Oplev QPD dark and bright noise spectra I tried again at plotting the ITMY_QPD
noise spectra in for dark and bright operation.
Before we had the strange situation where
 ITMY_oplev_dark_noise_vs_bright_noise.pdf 
  5432   Fri Sep 16 14:03:53 2011 PaulUpdateSUSSRM oplev QPD noise measurement I checked the dark and bright noise
of the SRM oplev QPD. The SRM QPD has a rather
high dark level for SUM of 478 counts. The
 SRM_oplev_dark_noise_vs_bright_noise.pdfSRM_ITMY_QPD_dark_noise_comparison.pdf 
  5435   Fri Sep 16 16:29:05 2011 kiwamuUpdateSUSf2a filters on SRMNew f2a filters
were installed on SRM.
 F2ASRM_Sep16.png 
  5436   Fri Sep 16 16:34:54 2011 PaulUpdateSUSITMY SRM oplev telescope planI've calculated a suitable collimating
telescope for the ITMY/SRM oplev laser, based
on the specs for the soon-to-arrive 2mW laser
 ITMY_SRM_telescope.png 
  5437   Fri Sep 16 17:09:07 2011 PaulUpdateSUSITMX oplev plan I just drew a basic picture of how
the ITMX oplev path could be reworked to
minimise the number of optics in the path.
 ITMX_oplev_plan.png 
  5438   Fri Sep 16 17:16:15 2011 JenneUpdateSUSInput matrix diagonalization: Fail![Jenne, Anamaria]
I put the new matricies in from the
free swinging test for the: ITMX, ITMY, ETMX,
  
  5439   Fri Sep 16 17:46:13 2011 kiwamuUpdateSUSSome screens fixedThe
bad medm screens have been fixed. There are
no blank fields and all the links are correct.
  
  5442   Fri Sep 16 22:11:21 2011 PaulUpdateSUSITMY transfer functionFirst of all I moved the lenses on the
ITMY/SRM oplev path to get a smaller spot
size on the QPDs. I couldn't get the beam
 ITMY_osem_to_oplev_TF.pdf 
  5443   Fri Sep 16 22:51:52 2011 PaulUpdateSUSCalibration plan for the oplevs In order to estimate the amount of
noise that the oplevs are injecting into
the GW channel, we first need to calibrate
  
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