40m QIL Cryo_Lab CTN SUS_Lab TCS_Lab OMC_Lab CRIME_Lab FEA ENG_Labs OptContFac Mariner WBEEShop
  40m Log, Page 106 of 341  Not logged in ELOG logo
ID Date Author Type Category Subjectup Text Attachments
  16549   Thu Jan 6 15:10:38 2022 KojiUpdateSUSITMX Chamber work[Anchal, Koji]

===
Summary ===
 PXL_20220107_044739280.MP.jpgPXL_20220107_044958224.jpgPXL_20220107_044805503.NIGHT.jpgScreen_Shot_2022-01-06_at_20.54.04.png 
  15717   Wed Dec 9 11:54:11 2020 gautamUpdateOptical LeversITMX HeNe replacedThe ITMX Oplev (installed in March 2019)
was near end of life judging by the SUM channel
(see 
 OLtrend_old_ndscope.pngITMX_OL_P.pdfITMX_OL_Y.pdf 
  16529   Tue Dec 21 16:35:39 2021 KojiUpdateVACITMX NW feedthru (LO1-1) connector pin bentI've received a report that a pin of
an ITMX NW feedthru connector was bent. (Attachment
1)
 PXL_20211222_002019620.jpgPXL_20211222_003014068.jpg 
  6260   Wed Feb 8 16:37:02 2012 steveUpdateSUSITMX OSEM LL is sickI'm driving C1:SUS-ITMX_OLYAW and PIT_EXC
with amplitude 0,1-0.3 while taking transfer
funtions of oplev.
 ITMXsensorLL.pngITMXsensorLLyaw.1.pngETMX.2amplPIT2.png 
  3686   Sun Oct 10 18:28:25 2010 kiwamuSummarySUSITMX OSEM offsetsBecause of the in-vac work on Oct. 4th
(see this
entry) , ITMX's OSEM offsets were
 OSEM.png 
  2641   Thu Feb 25 19:59:50 2010 KojiConfigurationSUSITMX OSEMsKoji, Steve
ITMX OSEM CONFIGURATION
 
 osem_config_ITMX.png 
  12128   Tue May 24 10:21:36 2016 ericqSummarySUSITMX Oplev loopsI did a quick measurement of the ITMX oplev
loops, both pitch and yaw have about the
same upper UGF as previous measurements with
  
  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
  
  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 
  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 
ELOG V3.1.3-