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ID Date Author Type Category Subjectup Text Attachments
  17102   Wed Aug 24 12:02:24 2022 PacoUpdateSUSITMX SUS is sus UL glitches?[Yehonathan, Paco]

This morning, while attempting
to align the IFO to continue with noise-budgeting,
 ITMX_UL_badness_08242022.png 
  11770   Tue Nov 17 00:57:21 2015 ericqUpdateSUSITMX UL calmed?After running
dither alignment for all mirrors, all oplevs
were recentered. (Except ETMY, since we did
 TM_nov17.pdfITMX_sensortrend.png 
  11774   Tue Nov 17 15:59:23 2015 ranaUpdateSUSITMX UL calmed?Although this noise is bad, we have always
had these kind of humps around the bounce
mode. Our interpretation in the past was
  
  17610   Thu Jun 1 08:34:06 2023 PacoUpdateCDSITMX UL coil and BS oplev rmsITMX
/ BS local damping issues 
-- investigation in progress
 Screenshot_2023-05-31_16-49-26_BS.pngScreenshot_2023-05-31_16-51-44_BSoplev.pngScreenshot_2023-05-31_16-39-28_ITMX.pngScreenshot_2023-05-31_16-56-47_ITMXoplev.png 
  5547   Mon Sep 26 16:42:08 2011 kiwamuUpdateSUSITMX ULSEN : fixedThe
issue on the ITMX UL sensor has been fixed.
 connection.pngITMXsensors.png 
  5544   Mon Sep 26 14:21:07 2011 kiwamuUpdateSUSITMX ULSEN shows jumps

    
        
 ITMXspectra.pngITMX-sensors.png 
  5546   Mon Sep 26 15:54:46 2011 kiwamuUpdateSUSITMX ULSEN shows jumpsCurrently the damping
of the ITMX suspension is intentionally disabled
  
  5352   Wed Sep 7 00:39:34 2011 ranaUpdateSUSITMX adjustments(What we did)
* Moved SUS to edge of table for
OSEM adjustment.
  
  11155   Sun Mar 22 13:53:44 2015 ranaUpdateSUSITMX alignment jumpsSo, was there real shifting in the ITMX
alignment as seen in the DV trend or just
mis-diagnosis from the ETMX violin mode?
  
  12464   Thu Sep 1 19:18:14 2016 JohannesUpdateSUSITMX and ETMX preemptive table levelingI balanced the ITMX and ETMX tables into
level position today, for which I had to
move quite a few of the on-table weights.
 8x 
  12467   Fri Sep 2 21:15:53 2016 gautamUpdateSUSITMX and ETMX preemptive table levelingThe ITMX table had relaxed overnight into
a slightly misaligned state overnight - since
the ITMX table holds PR2 and hence can affect
  
  15051   Wed Nov 27 12:16:52 2019 gautamUpdateLSCITMX and ITMY OSEMs with low and high circulating powerSummary:

The ITMX OSEMs report elevated
noise in the 10-100 Hz band when we have
 ITMXshadowSensors.pdfITMYshadowSensors.pdf 
  15052   Wed Nov 27 13:14:02 2019 ranaUpdateLSCITMX and ITMY OSEMs with low and high circulating powerif the RP don't fit

u must acquit

sweep the laser amplitude
  
  16852   Fri May 13 18:42:13 2022 PacoUpdateAlignmentITMX and ITMY sat amp failures[Yuta, Anchal, Paco]

As described briefly by JC, there
were multiple failure modes going during
  
  5109   Wed Aug 3 14:20:49 2011 steveUpdateSUSITMX and PRM damping restoredITMX watchdog tripped around 5 Torr 
and the PRM around 450 Torr of this vent.
They were restored than.
  
  805   Wed Aug 6 19:01:15 2008 AlbertoUpdateGeneralITMX and SRM OSEM post-earthquake diagnosticKoji, Yoichi, Alberto

Today we reset the OSEMs on ITMX and SRM
  
  2472   Mon Jan 4 09:52:40 2010 ranaConfigurationCamerasITMX camera and PSL channelsI
fixed up the ITMX camera like we did for
ITMY recently (removed T's and added strain
  
  798   Tue Aug 5 10:56:05 2008 AlbertoConfigurationGeneralITMX chamber opened and mirror releasedD-Mass, Steve, Rana, Koji, Yoichi, Alberto,
We opened the ITMX chamber to check the optics
after last week earthquake. In particular,
  
  8941   Tue Jul 30 18:56:31 2013 manasaUpdateGeneralITMX chamber vented/Closing plan[Koji,Manasa]
We removed the ITMX heavy door to
fix the oplev situation. 
  
  8944   Wed Jul 31 00:59:58 2013 manasaUpdateGeneralITMX chamber vented/Closing planMy Plan for closing:

Today:
  
  12294   Tue Jul 12 20:16:15 2016 LydiaUpdateGeneralITMX dustLooked at ITMX. Johannes and I both saw
a fairly large speck of dust near the center
of the HR side. We tried to take some photos
  
  12296   Wed Jul 13 00:01:38 2016 JohannesUpdateGeneralITMX dustWe ran out of illuminator juice, and short-term
charging couldn't restore enough battery
life to continue the work. We should be able
  
  12298   Wed Jul 13 03:16:47 2016 KojiUpdateGeneralITMX dustMulticolor flash light:

- It seems that the usb port charging
doesn't work.
  
  16513   Thu Dec 16 15:04:12 2021 ChubUpdateElectronicsITMX feedthroughs and in-vac cables installedThe ITMX 10" flange with four DSUB-25
feedthroughs has been install with the cables
connected at the in-vac side.  See photo;
 ITMX_feedthrough_install_12-16-21.jpg 
  16515   Thu Dec 16 15:54:08 2021 KojiUpdateElectronicsITMX feedthroughs and in-vac cables installedThanks for the installation.

With regard to the connector convention,
let's use the attached arrangement so
 PXL_20211216_235056582.jpg 
  12004   Tue Feb 23 09:51:34 2016 SteveUpdateSUSITMX freeGood job Q! Give us more details please
or  play
Rachmaninoff Piano Concernto #2
 ITMX_FREED.pngITMX_FREE.png 
  12003   Mon Feb 22 23:00:21 2016 ericqUpdateSUSITMX free, green is flashingTaking
inspiration from 
  
  12513   Thu Sep 22 20:01:47 2016 LydiaUpdateGeneralITMX freed, all optics kickedRana came by and freed ITMX again. I think
it shouldn't be a problem for me to free
it if it happens again. 
  
  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
  
  2651   Tue Mar 2 23:11:43 2010 KojiUpdateSUSITMX hungJenne and Koji
We successfully hung ITMX on the
SOS. Side magnet is ~2mm off from the center
  
  2652   Wed Mar 3 02:57:29 2010 JenneUpdateSUSITMX hung


   
        
            
  
  2796   Mon Apr 12 22:51:31 2010 KojiUpdateSUSITMX installed and alignedKoji
ITMX
was aligned
 IMG_2381.jpg 
  7700   Tue Nov 13 00:19:51 2012 JenneUpdateCamerasITMX is just fine

    

       
            
  
  10328   Mon Aug 4 09:17:42 2014 SteveUpdateSUSITMX is still kicked

    

       
            
 ITMXkicked.pngITMXkickedStart.png 
  17730   Fri Jul 28 00:27:17 2023 KojiUpdatePEMITMX issue continuesEven though the noise issue of an OSEM
was resolved, the issue with ITMX still continues.
OPLEV pitch servo can't be turned
  
  7822   Thu Dec 13 04:42:32 2012 DenUpdateSUSITMX local dampingTonight we've noticed that ITMX local damping
was kicking the optics. This happened because
LR shadow sensor was not working. In ~30
 lrsen.png 
  792   Mon Aug 4 16:20:20 2008 DmassConfigurationPhotosITMX magnet position relative to OSEMSWe have vented, and taken the following pics
of the magnets to document their position
before we ruin everything.
 DSC_0151.JPGDSC_0150.JPG 
  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

    
        
  
  12491   Wed Sep 14 09:33:54 2016 SteveUpdateGeneralITMX magnets are stuckedI believe that the UR and LR magnets are
stuck. There was no earth quake at 16:18
yesterday. Something had to kick it into
 ITMXmagStuck.png 
  12494   Wed Sep 14 20:05:32 2016 LydiaUpdateGeneralITMX magnets are stuckedWhen I restarted c1susaux yesterday, I
didn't know that I needed to disable
the coil outputs first. So when it came back
  
  12512   Thu Sep 22 15:44:21 2016 SteveUpdateGeneralITMX magnets are stucked again 

 
 StuckAgain.png 
  11806   Tue Nov 24 14:58:40 2015 yutaroUpdateLSCITMX misalignedI misaligned ITMX. The oplev servo for
ITMX is now turned off. You can restore ITMX
alignment by running "restore".
  
  5341   Tue Sep 6 08:05:53 2011 steveUpdateSUSITMX must be touching


   
        
            
 osemITMX.jpg 
  8937   Tue Jul 30 11:30:55 2013 manasaUpdateGeneralITMX oplev

    

       
            
  
  8938   Tue Jul 30 13:41:35 2013 KojiUpdateGeneralITMX oplevI wonder what optics is causing the halo
on the oplev beam.
It this comes from any uncoated lens
  
  8939   Tue Jul 30 15:38:24 2013 manasaUpdateGeneralITMX oplev

    

       
            
  
  5395   Tue Sep 13 16:57:44 2011 steveUpdateLSCITMX oplev **

    

       
            
  
  5749   Fri Oct 28 01:13:17 2011 kiwamuUpdateSUSITMX oplev : iris fully openedI found that the sum of the ITMX oplev
signals had gone down to zero yesterday.
I checked the ITMX table and found
  
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