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ID Date Author Type Category Subjectup Text Attachments
  15347   Tue May 26 01:58:57 2020 gautamUpdateElectronicsSome electronics thoughtsA big factor in how much IFO locking activities
can take place is how cooperative the IMC
is.
 IMCsensingNoise.pdfIMCsensingNoise.pdf 
  15514   Tue Aug 11 23:20:29 2020 gautamUpdateBHDSome first tests with air BHD setupSome tests done today:

All of these tests were done with
the PRMI locked with carrier resonant in
 PRMI_RFlock.pdfPRMI_RFlock_fullscale.pdf 
  11998   Thu Feb 18 02:52:27 2016 ericqUpdateIOOSome housekeepingI manually aligned the IMC. Spot positions
are all < 1.5mm. PMC trans of ~0.74, MC2
Trans of ~15400, MC Refl ~0.4, which is better
  
  15308   Mon Apr 20 17:49:58 2020 gautamUpdateGeneralSome housekeeping

Empty
N2 replaced. 


Logged back into zita and started
 fDomainWF_Apr06.pdffDomainWF_Apr20.pdf 
  15606   Thu Oct 1 17:44:48 2020 gautamUpdateGeneralSome inventory notesThe optomechanics stock in the lab was
in a sad state. We have obtained the following
from Thorlabs in the last two months:
  
  5980   Tue Nov 22 18:42:10 2011 kiwamuSummaryGreen LockingSome issues on the Y end green PDH locking[Rana / Kiwamu]
 As
a part of the ALS noise budgeting we took
  
  5983   Wed Nov 23 00:00:53 2011 ZachSummaryGreen LockingSome issues on the Y end green PDH locking

    

       
            
  
  1264   Mon Feb 2 17:25:44 2009 AlbertoConfigurationGeneralSome little problem with the new elogFor some reason the new elog does not look
exactly like it should. 

1) Some of the
editing features are not available.

2)
  
  1265   Mon Feb 2 18:32:54 2009 AlbertoConfigurationGeneralSome little problem with the new elog


   
        
            
  
  1969   Mon Sep 7 23:18:01 2009 AlbertoUpdateLockingSome locking attemptsTried
to lock the interferometer but arm power
didn't get over 65.
  
  15245   Tue Mar 3 19:11:48 2020 gautamUpdateLSCSome locking prep
Re-aligned and locked the arm cavities
for IR and green.
Re-set trans
normalization because after the c1iscex
  
  10992   Tue Feb 10 02:40:54 2015 JenneUpdateLSCSome locking thoughts on PRMI[EricQ, Jenne]

We wanted to make the PRMI lock
more stable tonight, which would hopefully
  
  10994   Tue Feb 10 03:09:02 2015 ericqUpdateLSCSome locking thoughts on PRMIUnfortunately, we only had one good CARM
offset reduction to powers of about 25, but
then my QPD loop blew it. We spent the vast
  
  10659   Fri Oct 31 19:59:26 2014 KojiUpdateGeneralSome locking work / PRMI analysisPreparations
- According to Diego's report, the
MC WFS gains were too high. We'll fix this
 PRMIsb_PRCL_OLTF.pdfPRMIsb_MICH_OLTF.pdfPRMIsb_PRCL_SPE.pdfPRMIsb_MICH_SPE.pdf 
  10917   Sat Jan 17 01:10:36 2015 JenneUpdateLSCSome locking, may need to modify UGF part againI have been playing with the IFO tonight. 
Mostly, I wanted to make sure that all of
the scripts for the carm_cm_up sequence were
  
  10926   Tue Jan 20 21:58:04 2015 diegoUpdateLSCSome locking, may need to modify UGF part again 




 UGF_SERVO_MDL.png 
  10725   Tue Nov 18 15:20:58 2014 JenneUpdateLSCSome lockloss plots from PRFPMIElog from ~5am last night:
Tonight was just several trials
of PRFPMI locking, while trying to pay more
 8x 
  10726   Tue Nov 18 17:11:30 2014 JenneUpdateLSCSome lockloss plots from PRFPMII am still staring at / trying to figure
out the latter 4 locklosses posted earlier. 
But, I have just included the transmission
  
  11182   Tue Mar 31 02:51:39 2015 ericqUpdateLSCSome locksI had a handful of ~10 minute locks tonight.
I intended to work on the 1f PRMI transition,
but ended just familiarizing myself with
  
  11183   Tue Mar 31 03:02:44 2015 KojiUpdateLSCSome locksAssuming the carrier mode in PRC is stable
and the SB is the one moving, can we just
use the POP DC QPD to control PRM?
  
  11185   Tue Mar 31 18:27:58 2015 ericqUpdateLSCSome locks


 qpdSwitch.pngqpdAlways.png 
  3115   Thu Jun 24 13:02:59 2010 JenneUpdateComputersSome lunchtime reboots[Jenne, Megan, Frank]
We rebooted c1iovme, c1susvme1, and
c1susvme2 during lunch.  Frank is going
  
  11171   Wed Mar 25 18:27:34 2015 KojiSummaryGeneralSome maintainance- I found that the cable for the AS55 LO
signal had the shielding 90% broken. It was
fixed.
  
  11286   Tue May 12 12:04:41 2015 manasaUpdateGeneralSome maintenance* Relocked IMC. I guess
it was stuck somewhere in the autlocker loop.
I disabled autolocker and locked it manually.
  
  1541   Sun May 3 22:48:12 2009 YoichiUpdateLockingSome measurements at the lock pointI attached some measurement results at when
the IFO is at the full lock point.
 ArmPowerTrend.pngCARMSweep.pngCM-AO-Loop-SB1.png 
  11063   Wed Feb 25 04:21:58 2015 ericqUpdateCDSSome model updatesI changed the suspension library block
to acquire the SUS_[optic]_LSC_OUT channels
at 16k for sensing matrix investigations.
  
  10499   Fri Sep 12 03:49:57 2014 ericqUpdateLSCSome more PRFPMI efforts Since DRMI didn't get fully commissioned,
I tried my hand at PRFPMI locking with the
newly improved ALS performance. 
  
  15545   Fri Aug 28 23:33:38 2020 gautamUpdateBHDSome more hardware changesJust a quick set of notes detailing changes
so that there are no surprises, more details
to follow.
  
  16395   Tue Oct 12 17:10:56 2021 AnchalSummaryCDSSome more informationChris pointed out some information displaying
scripts, that show if the DAQ network is
working or not. I thought it would be nice
  
  4314   Thu Feb 17 13:20:06 2011 SureshUpdateVIDEOSome more labels[Larisa, Kiwamu, Steve and Suresh]
 
  We continued the labeling
  
  5961   Sat Nov 19 15:58:04 2011 MirkoUpdateIOOSome more looks into OSEM noise[Den, Mirko]
We looked some more into the the
OSEM signals and their coherence to the seismometer
 8x 
  15458   Tue Jul 7 14:06:10 2020 gautamUpdateASCSome more thoughts about ASCSummary:

I want to be able to run the dither
alignment servo with the PRFPMI locked -
 ITM_OL_DCcoupling.png 
  14012   Sun Jun 24 20:02:07 2018 gautamUpdateSUSSome notes about coil driver noiseSummary:

For a series resistance of 4.5
kohm, we are suffering from the noise-gain
 CoilDriverSchematic.pdfD010001_2k_fastOnly_2.25k.pdfD010001_4k_fastOnly_4.5k.pdf 
  15553   Wed Sep 2 00:49:47 2020 gautamUpdateBHDSome notes about homodyne phaseSummary:

Using a heterodyne measurement
setup to track both quadratures, I estimated
 heterodyneMICH.pdfunwrappedPhase.pdfunwrappedPhase_zoom.pdfphaseNoisePSD.pdf 
  10727   Tue Nov 18 22:34:28 2014 JenneUpdateLSCSome other plots from PRFPMI


   
        
            
 TRXmax98_TRYmax107_CARMdarmOnALS_0carmOffset.pngZoom_with_POP22.pngZoom_with_POP110.pngZoom_with_ErrSigs.png 
  14917   Mon Sep 30 17:04:30 2019 gautamUpdateCDSSome path changesI made some model changes to c1lsc. To
propagate the changes, I tried the usual
rtcds make sequence. But I got an error about
  
  15564   Tue Sep 8 11:49:04 2020 gautamUpdateCDSSome path changesI edited /diskless/root.jessie/home/controls/.bashrc
so that I don't have to keep doing this
  
  2534   Wed Jan 20 20:11:56 2010 AlbertoUpdateABSLSome preliminary results from measuring PRC's transmissivity for an amplitude modulated beamHere I'm posting a plot showing a
set of measurements that I made in the past
few days to determine the absolute length
 2010-01-19_PRCtransmissivityVsModel.png 
  2536   Thu Jan 21 10:31:13 2010 KojiUpdateABSLSome preliminary results from measuring PRC's transmissivity for an amplitude modulated beamNice
and interesting plot.
  
  15953   Mon Mar 22 16:29:17 2021 gautamUpdateASCSome prep for AS WFS commissioning
Added rough cts2mW calibration
filters to the quadrants, see 
 AS_WFS_head.pngWFSquads.pdf 
  15273   Fri Mar 13 00:32:38 2020 gautamUpdateLSCSome progressFinally, some RF only CARM, see Attachment
#1. During this time,
 RFonly_CARM.pngCARMTF.pdf 
  2001   Fri Sep 25 16:10:17 2009 JenneUpdateAdaptive FilteringSome progress on OAF, but more still to be done[Jenne, Sanjit]
It seems now that we are able to
get the OAF system to do a pretty good job
 OAF_Running_25Sept2009.jpg 
  3985   Wed Nov 24 18:11:26 2010 JenneUpdatePEMSome progress on getting PEM channelsI have made a little bit of progress on
the PEM channels.  I have begun writing
up detailed instructions in the
  
  2103   Fri Oct 16 12:40:59 2009 KojiConfigurationGeneralSome questionsSome questions came arise to me:
A. How the green injection system
should be? How the handing off between 532
  
  9827   Thu Apr 17 17:27:32 2014 ericqUpdateLSCSome reference PlotsJenne made some suggestions for some plots
that would be useful on our CARM offset reduction
adventures, so I made some with my MIST model. 
 carm2TRX.pdfcarmSignalLevels.pdf 
  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 
  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.
  
  5466   Mon Sep 19 17:45:39 2011 ranaUpdateSUSSome screens fixed


   
        
            
 Untitled.png 
  15195   Fri Feb 7 02:24:24 2020 gautamUpdateLSCSome short notes[koji, gautam] 

Plots + interpretation tomorrow.


CM_Slow path can be used
  
  11212   Fri Apr 10 03:44:51 2015 JenneUpdateLSCSome small progress, may have DAC problem?Small steps tonight, but all in the forward
direction.

On one of my better locks, I saw
 PRMI_sb_powers_9Apr2015.png 
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