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ID Date Author Type Category Subject Text Attachments
  11790   Thu Nov 19 16:06:54 2015 yutaroUpdateOptical LeversCalibration of oplevs for ITMY/ETMYI'm sorry. I will be careful about
that. And I updated the plots in elog
11785.
  
  11789   Thu Nov 19 15:16:24 2015 ericqUpdateCDSc1iscey IO chassis now has brackets[Steve, ericq]

Brackets for the c1iscey IO
chassis cards have been installed. Now, I
  
  11788   Thu Nov 19 14:50:34 2015 Max IsiUpdateGeneralNew 2D histogram plot for summary pagesA new type of plot is now available for
use in the summary pages, based on EricQ's 2D
histogram plots (elog
 C1-ALL_AB3834_HISTOGRAM2D-1131926417-86400.png 
  11787   Wed Nov 18 23:40:01 2015 ranaUpdateOptical LeversCalibration of oplevs for ITMY/ETMYOMG. Please try to use larger fonts and
PDF so that we can read the plots.

  
  11786   Wed Nov 18 23:18:07 2015 ericqUpdateComputer Scripts / Programsnodus /boot cleared upThe /boot partition was filling up with
old kernels. Nodus has automatic security
updates turned on, so new kernels roll in
  
  11785   Wed Nov 18 22:26:33 2015 yutaroUpdateOptical LeversCalibration of oplevs for ITMY/ETMYBased on elog
1403, I calibrated the oplevs for ITMY/ETMY.

Summary of this method is following:
 calib_etmypit2.pdfcalib_etmyyaw2.pdfcalib_itmypit2.pdfcalib_itmyyaw2.pdfcalib_oplev.zip 
  11784   Wed Nov 18 20:49:05 2015 ranaUpdateComputer Scripts / Programsnodus boot getting fullcontrols@nodus|~ > df -h
Filesystem        
          Size  Used
  
  11783   Wed Nov 18 17:32:36 2015 yutaroUpdateOptical LeversBeam centering for the oplev of ITMY[yutaro, Koji]

  
  11782   Wed Nov 18 17:09:22 2015 KojiSummaryPSLPMC Servo analysisSummary

The PMC servo was analysed. OLTF
was measured and modeled by ZPK (Attachment
 PMC_OLTF.pdfPMC_DSP.pdf 
  11781   Wed Nov 18 16:53:17 2015 KojiSummaryPSLPMC PZT capacitanceThe PMC PZT capacitance was measured.
- Turn off the HV supplies. Disconnect
HV OUT cable.
  
  11780   Wed Nov 18 16:51:58 2015 KojiSummaryPSLPMC servo calibrationSummary

The PMC servo error (MIX OUT MON
on the panel) and actuation (HV OUT MON)
 PMC_err_cal.pdf 
  11779   Wed Nov 18 11:22:13 2015 yutaroUpdateASCLoss maps of arm cavitiesI got linear relation between these. The
results and method are below.

 ETM_PIT_up.pngETM_PIT_up.pngETM_YAW_up.png 
  11778   Wed Nov 18 10:10:53 2015 ericqUpdateCDSc1iscey IO chassis missing bracketsSteve and I inadvertently discovered
that the c1iscey IO chassis doesn't
have brackets to secure the cards where the
 IMG_1505.jpgIMG_1506.jpg 
  11777   Tue Nov 17 20:57:43 2015 ericqUpdateCDS16Hz frame writing running againBack to nominal FB configuration at 1131857782,
aka Nov 18 2015 04:56:05 UTC.

Weirdly, during this time, the script
  
  11776   Tue Nov 17 20:40:08 2015 yutaroSummaryASCLoss maps of arm cavitiesIn preparation for the measurement of loss
maps of arm cavities, I measured the relationship
between:
  
  11775   Tue Nov 17 16:21:10 2015 KojiSummaryPSLPMC servo circuit review, follow up measurementsI'm still analyzing the open loop TF
data. Here I report some nominal settings
of the PMC servo
  
  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
  
  11773   Tue Nov 17 15:49:23 2015 KojiConfigurationIOOMC Autolocker modified/opt/rtcds/caltech/c1/scripts/MC/AutoLockMC.csh 
was modified last night.

1. Autolocker sometimes forget
  
  11772   Tue Nov 17 14:31:25 2015 ericqUpdateCDS16Hz frame writing temporarily disabledTo test the effect on EPICS latency, I've
restarted daqd with modified ini files which
disable all frame writing of 16Hz channels. 
  
  11771   Tue Nov 17 10:06:53 2015 SteveUpdateGeneralwater leak in east arm


 eastArmLeakyPipeInsideWall.jpgwd18ft.jpg 
  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 
  11769   Mon Nov 16 21:32:49 2015 KojiSummaryPSLPMC servo circuit review, follow up measurementsThe result of the precise inspection
for the PMC servo board for the 40m was done.

The record, including the
  
  11768   Mon Nov 16 19:05:59 2015 KojiSummaryPSLPMC servo circuit review, follow up measurementsPMC follow up measurements have been done.
The servo circuit was reviewed.

Now the PMC, IMC, X/Y arms are
  
  11767   Mon Nov 16 16:18:34 2015 gautamUpdateGeneralwater leak along Y-arm?A Caltech maintenance staff dropped by
at around noon today, and told me that he
had seen a small puddle of water on the other
  
  11766   Mon Nov 16 11:48:34 2015 yutaroUpdateOptical LeversBeam centering for the oplev of ETMY[yutaro, ericq]

 

We made the beam spot on QPD for
  
  11765   Sun Nov 15 22:43:48 2015 KojiSummaryPSLPMC LO degraded, usual ERA-5 replacement, LO recoveredI think the IMC locking was somewhat improved.
Still it is not solid as long time before.

Before the PMC fix (attachment
 C1-MULTI_E6875C_TIMESERIES-1131408017-86400.pngC1-MULTI_E6875C_TIMESERIES-1131580817-86400.png 
  11764   Sat Nov 14 00:52:25 2015 KojiSummaryCDSInvestion on EPICS freeze[Yutaro, Koji]

Recently "EPICS Freeze"
is so frequent and the normal work on the
  
  11763   Fri Nov 13 22:32:54 2015 KojiSummaryPSLPMC LO degraded, usual ERA-5 replacement, LO recovered[Yutaro, Koji]

We found that the PMC LO level
was fluctuating in a strage way (it was not
 PMC_LO.pngIMG_2093.JPGIMG_2091.JPGIMG_2095.JPGIMG_2096.JPG 
  11762   Fri Nov 13 17:33:39 2015 gautamUpdateLSCg-factor measurements


 findGFactor.zip 
  11761   Fri Nov 13 15:48:16 2015 gautamUpdateLSCPhase tracker calibration using Rubidium standard[yutaro, gautam]




 6x 
  11760   Fri Nov 13 15:20:24 2015 SteveUpdateSUSOSEMsAre they oscillating or not ?




 OSEMs.pngPOSbiasOFF.png 
  11759   Thu Nov 12 16:00:55 2015 ericqUpdateIOOPSL Laser turned back onWe found the PSL laser switched off. Looking
at the wall StripTool, it looks like this
happened about 4 hours ago. Gautam was working
  
  11758   Thu Nov 12 10:47:17 2015 ericqUpdateSUSETMX oplev servo disabledBy looking at the oplev and Vmons before
and after a step of 90 counts in SUS-ETMX_PIT_OFFSET,
I observe:
  
  11757   Thu Nov 12 10:22:33 2015 SteveUpdatePEMpossible vibration for 4days Building:        
San Pasqual walkway East to West

                 
  
  11756   Thu Nov 12 09:41:02 2015 SteveUpdatePSLPMCThe PMC is not happy and the ITMX UL OSEM
is moving too much

 
 PMC_ITMX.png 
  11755   Thu Nov 12 09:15:56 2015 SteveUpdateSUSITMX osemsThe ITMX OSEMS are oscillating.  ITMX.png 
  11754   Wed Nov 11 22:50:39 2015 KojiConfigurationCDSSlow machine time&dateI was gazing at the log file for Autolocker
script (/opt/rtcds/caltech/c1/scripts/MC/logs/AutoLocker.log
)
  
  11753   Wed Nov 11 22:11:15 2015 KojiUpdateSUSPSL/IOO maintenance, TM SUS check upPMC

- Before any of the following work,
I went to the PSL table and aligned the PMC.
 TM_SUS.pdfTM_SUS_SD.pdf 
  11752   Wed Nov 11 14:06:09 2015 ranaUpdateSUSETMX oplev servo disabledHow many volts does it take to pitch the
ETM by 5 urad?
  
  11751   Wed Nov 11 11:41:42 2015 gautamUpdateGeneralLong cable laid out for 1pps signalIn order to synchronise the FS725 Rb clock
with our GPS timing signals, I laid out a
longish cable running from 1X7 to the
  
  11750   Tue Nov 10 19:25:42 2015 gautamUpdateGeneralFS725 Rubidium referenceIn the last few days, with Koji's help,
I have recovered both the FS725 Rubidium
references from W. Bridge, one from
  
  11749   Tue Nov 10 16:34:00 2015 yutaroUpdateLSCUpdated interpretation of peaks


 homfit2.png 
  11748   Tue Nov 10 11:41:56 2015 KojiUpdateLSCUpdated interpretation of peaksFYI: I've also reported the similar
mod depths of

11M: 0.194
  
  11747   Tue Nov 10 11:40:03 2015 KojiUpdateLSCUpdated interpretation of peaksWhat is the uncertainty of your RoC estimation?

One measurement of the ETMY ROC
was 57.6m, but we trust another measured
  
  11746   Tue Nov 10 11:06:02 2015 yutaroUpdateLSCUpdated interpretation of peaks


 HOMlocation.pnghomfit.png 
  11745   Tue Nov 10 02:34:28 2015 gautamUpdateLSCUpdated interpretation of peaksAfter thinking about the interpretation
of the various peaks seen in the scan through
2 FSRs, I have revised the information presented
 Y_scan.pdfmodDepth.pdf 
  11744   Mon Nov 9 23:22:18 2015 ericqUpdateSUSETMX oplev servo disabledDuring a ETMX kick that just occured, with
only local damping on, the slow VMon channels
didn't show any noticable change. 
 Vmon_duringkick.png 
  11743   Mon Nov 9 16:58:59 2015 gautamUpdateLSCFSR and linewidth measurements with phase tracker


 Y_scan.pdfmodDepth.pdfMatlab_code.zip 
  11742   Mon Nov 9 15:59:06 2015 ericqUpdateLSCFSR and linewidth measurements with phase tracker


  
  11741   Mon Nov 9 14:24:36 2015 yutaroUpdateLSCFSR and linewidth measurements with phase trackerI'd like to add a few calculation results,
mode matching ratio for Y arm and modulation
depth.
  
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