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ID Date Author Type Category Subject Text Attachments
  11892   Fri Dec 18 17:37:04 2015 ranaUpdateLSCUncooperative AUX XHere's how we should diagnose the EX
laser:


Compare IR RIN of laser
  
  11891   Thu Dec 17 16:44:03 2015 gautamUpdateCDSALS Slow control MEDM screen updated


 ALS_SLOW_17DEC2015.png 
  11890   Thu Dec 17 14:02:05 2015 gautamUpdateCDSIPC channels for beat frequency control set upI've set up two IPC channels that take
the output from the digital frequency counters
and send them to the end front-ends (via
  
  11889   Thu Dec 17 01:55:16 2015 ericqUpdateLSCUncooperative AUX X[ericq, Gautam]

We were not able to fix the excess
frequency noise of the AUX X laser by the
  
  11888   Wed Dec 16 23:15:28 2015 ericqUpdateGreen LockingGreen beat channels temporarily set up as IR beat channelsWith the IR beats going to the nominal
ALS channels as Gautam left them, we're
able to measure the free running frequency
 2015-12-16_AUXfreerunning.pdf 
  11887   Wed Dec 16 18:34:40 2015 gautamUpdateGreen LockingGreen beat channels temporarily set up as IR beat channelsSince there
are a few hours to go before the locking
efforts tonight, I've temporarily borrowed
  
  11886   Wed Dec 16 10:56:22 2015 gautamUpdateCDShard reboot of FB[ericq,gautam]

Forgot to submit this yesterday...

While we were trying to get the
  
  11885   Wed Dec 16 10:22:14 2015 SteveUpdateIOOthis morningc1sus and c1ioo were restarted. PMC locked.
 
 PMClocked.png 
  11884   Tue Dec 15 18:08:22 2015 Max IsiUpdateGeneralSummary archive cleaning cron jobI have added a new cron job in pcdev1 at
CIT using the 40m shared account. This will
run the /home/40m/DetectorChar/bin/cleanarchive
  
  11883   Tue Dec 15 11:22:53 2015 gautamUpdateCDSc1scx and c1asx crashedI noticed what I thought was excessive
movement of the beam spot on ITMX and
ETMX on the control room monitors, and when
 CDS_FE_STATUS_OVERVIEW_15DEC2015.png 
  11882   Mon Dec 14 23:56:29 2015 ericqUpdateCDSc1pem revertedTo get C1PEM data back into the frames,
I removed the new BLRMS blocks, recompiled,
reinstalled, re-enabled it in daqd, restarted.
  
  11881   Mon Dec 14 23:49:03 2015 ericqUpdateOptical LeversCalibration of oplevs for ITMX/ETMX


  
  11880   Mon Dec 14 16:46:42 2015 ericqUpdateWienerFilteringNoise Subtraction PuzzlerHere's something to ponder.

Our online MCL feedforward uses
perpendicular vertex T240 seismometer signals
 subpuzz.pdf 
  11879   Mon Dec 14 16:27:11 2015 gautamUpdateGreen LockingY-end AUX PDH noise breakdownSummary:

I've
attached the results from my measurements
 YAUX_NB_Dec2015.pdfPDH_errSig_Calib.pdf 
  11878   Mon Dec 14 14:08:49 2015 SteveUpdateSUSRuby wire standoffs updateTwo companies are willing to  make
the ruby grooves and the third one is still
working on their quote.
  
  11877   Sun Dec 13 21:55:28 2015 gautamUpdateGreen LockingY end laser (Lightwave) PZT calibrationSummary:

After
the discussions at the Wednesday meeting,
 IMG_5972.JPGServoY_TF_13Dec2015.pdfDatanCode.zipPSD_916Hz.pdf 
  11876   Fri Dec 11 23:12:09 2015 KojiSummaryCOCLoss map measurement documentYutaro left detailed slides for his loss
map measurement

https://dcc.ligo.org/LIGO-G1501547
  
  11875   Fri Dec 11 16:16:36 2015 yutaroUpdateOptical LeversCalibration of oplevs for ITMX/ETMXBased on calibration measurement I have
done (elog
11785, 11831), I
  
  11874   Fri Dec 11 15:37:50 2015 yutaroUpdateLSCPower recycling gain estimation from arm loss measurementAttached is the plot of relation between
the average arm round trip loss and
power recycling gain. 2 % loss due to PR3
 PRG_plot.png 
  11873   Fri Dec 11 13:28:36 2015 KojiUpdateLSCPower recycling gain estimation from arm loss measurementCan I ask you to make a plot of the power
recycling gain as a function of the average
arm loss, indicating the current loss value?
  
  11872   Fri Dec 11 09:35:44 2015 yutaroUpdateLSCPower recycling gain estimation from arm loss measurementI took PR3 AR reflectivity and calculated
PRG (PR3 is flipped and so AR surface is
inside PRC).
 LaserOptikAR.png 
  11871   Thu Dec 10 19:53:22 2015 yutaroUpdateLSCstrange behavior of ASDCTo check if the strange behavior of ASDC
is caused by SR2/SR3 or not, I did the following
measurement:
 30.png11.png49.png 
  11870   Thu Dec 10 12:33:04 2015 yutaroUpdateLSCstrange behavior of ASDCI did additional tests for the strange
behavior of ASCD. ETMY, ETMX and ITMY were
misaligned so that only light reflected by
 07.png28.pngASDC.png 
  11869   Wed Dec 9 23:16:13 2015 ranaUpdateComputer Scripts / ProgramsNodus securityNDS2 and the usual ports so that we can
use optimus as a comsol server.

  
  11868   Wed Dec 9 19:01:45 2015 jamieUpdateCDSback to fb1I spent this afternoon trying to debug
fb1, with very little to show for it. 
We're back to running from fb.
  
  11867   Wed Dec 9 18:45:58 2015 KojiSummaryGeneralNetwork Topology Check[Eric Q, Gautam, Koji]

We went through the network connections
to produce the mapping of the instruments.
 Network_topology_9Dec2015.xlsxNetwork_topology_9Dec2015.pdf 
  11866   Wed Dec 9 11:25:55 2015 SteveUpdateVACnormal RGA scan at day 435-436Glitches are gone. Rga scan is good

 
 glichesGone.pngd436.png 
  11865   Tue Dec 8 23:24:08 2015 gautamUpdateGreen LockingY end laser (Lightwave) PZT calibrationSummary:

I
measured the PZT actuator gain for the Lightwave
 Ycalib_8Dec.pdf 
  11864   Tue Dec 8 15:57:16 2015 yutaroSummaryLSCPower recycling gain estimation from arm loss measurementI estimated power recycling gain with the
results of arm loss measurement.

From elog
  
  11863   Tue Dec 8 15:40:48 2015 SteveUpdateVACglitchy RGA scan at day 434The noise floor of the Rga scan is glitching
less today

 
 lessGlichingToday.png 
  11862   Tue Dec 8 15:18:29 2015 ericqUpdateComputer Scripts / ProgramsNodus securityI've done a couple things to try and
make nodus a little more secure. Some have
worried that nodus may be susceptible to
  
  11861   Tue Dec 8 11:24:45 2015 yutaroSummaryComputer Scripts / ProgramsScripts for loss map measurementHere I explain usage of my scripts
for loss map measurement. There are 7 script
files in a same directory /opt/rtcds/caltech/c1/scripts/lossmap_scripts. With
  
  11860   Mon Dec 7 15:56:35 2015 yutaroUpdateLSCXARM lock with ITMX actuated and related change on ASSI changed the snapshot file for ASS, /opt/rtcds/caltech/c1/scripts/ASS_DITHER_ON.snap
as follows:
  
  11859   Mon Dec 7 11:25:10 2015 jamieUpdateCDSdaqd is mad


  
  11858   Mon Dec 7 11:17:51 2015 SteveUpdateVACnoisy RGA scan at day 433 




 433dRGAscan.png 
  11857   Mon Dec 7 11:11:25 2015 yutaroSummaryLSCround trip loss of X armOn the day before yesterday and in this
morning, I measured loss map of ETMX. I reported
the method I used to change the beam spot
 image1-2.JPGsymmetry.png 
  11856   Mon Dec 7 10:45:21 2015 ericqUpdateCDSdaqd is madSince removing c1pem from the daqd master
file, daqd has not crashed. I suppose we're
running into the stability issue that motivated
  
  11855   Mon Dec 7 10:40:09 2015 yutaroUpdateComputer Scripts / ProgramsAdded 1 line to UNFREEZE_DITHER.pyI added 1 line to one of the ASS scripts,
UNFREEZE_DITHER.py like this:

L29>   ez.cawrite('C1:ASS-'+dof+'_GAIN',
  
  11854   Mon Dec 7 00:45:28 2015 ericqUpdateCDSdaqd is madI glanced at the summary pages and noticed
that, since Friday around when we first
loaded up the new BLRMS parts, daqd has crashing
  
  11853   Sat Dec 5 21:57:32 2015 yutaroHowToCamerasWhen image capture does not work...I don't know if just running "modprobe"
will work or not, because I didn't try
it...  When the same problem happens
  
  11852   Sat Dec 5 21:28:33 2015 KojiHowToCamerasWhen image capture does not work...Do we need "make" everytime?
Do you mean just running "modprobe"
didn't work?
  
  11851   Sat Dec 5 12:02:25 2015 yutaroHowToCamerasWhen image capture does not work...Today image capture did not work again,
though it had worked 3 days before. I also
found that red indicator light on the
  
  11850   Fri Dec 4 23:02:13 2015 yutaroUpdateLSCBeam on POX11 is possibly not centered well[yutaro, Koji]

Now, the beam on POX11 PD is well
centered and well focused.
 image1.JPG56.png04.png 
  11849   Fri Dec 4 18:20:36 2015 gautamUpdateCDSBLRMS for IMC setup[ericq, gautam]

BLRMS filters
have been set up for the coil outputs and
 c1pem_timing.pngC1SUS_overclocked.png 
  11848   Fri Dec 4 13:12:41 2015 ericqUpdateCDSc1ioo Timing Overruns SolvedI had noticed for a while that the c1ioo
frontend model had much higher variability
than any of the other other 16k models, and
 c1ioo_timing.png 
  11847   Fri Dec 4 12:33:52 2015 yutaroUpdateLSCBeam on POX11 is possibly not centered wellTo focus POX beam on POX11 PD, I added
an iris and a lens before POX11 PD as you
can see in Attachment 1.
 image1-3.JPG07.png47.png 
  11846   Fri Dec 4 10:18:33 2015 yutaroUpdateASSOffset in the dither loop of XARM vs beam spot shift on ETMXAs I did for YARM (elog
11779), I measured the relation between
offsets added just after the demodulation
 offset-angleETMXPIT.pngoffset-angleETMXYAW.png 
  11845   Thu Dec 3 19:10:28 2015 yutaroUpdateLSCXARM lock with ITMX actuated and related change on ASSTo avoid the strange kicking of ETMX, I
locked XARM with ITMX actuated instead of
ETMX so that I changed elements of C1LSC_OUTPUT_MTRX;
 40.png 
  11844   Thu Dec 3 18:18:48 2015 gautamUpdateCDSBLRMS for optics suspensions - library blockIn order to be consistent with the naming
conventions for the new BLRMS filters, I
made a library block that takes all the input
  
  11843   Thu Dec 3 10:05:07 2015 yutaroUpdateOptical LeversCalibration of oplevs for ITMX/ETMXI updated the figures. I think it's
easier to read now.
  
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