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ID Date Author Type Category Subjectup Text Attachments
  3961   Sat Nov 20 03:37:11 2010 yutaSummaryCDSCDS time delay measurement - the ripple(Koji, Joe, Yuta)

Motivation:
 c1tst16Kdelay.png 
  4302   Tue Feb 15 15:06:25 2011 josephbUpdateCDSCDS todo list for tomorrow morningCurrently, there is a test directory called
/opt/rtcds/caltech/c1/new_core where we have
the latest svn checkout.  Tomorrow (after
  
  3036   Wed Jun 2 17:34:33 2010 josephb, alex, valeraUpdateCDSCDS updatesFrom what I understand, Alex rewrote portions
of the framebuilder and testpoint codes and
then recompiled them in order to get more
  
  4445   Mon Mar 28 15:18:04 2011 josephbUpdateCDSCDS updates on FridayLast Friday, we discovered a bug in the
RCG where the delay part was not actually
delaying.  We reported this to Alex
  
  17074   Wed Aug 10 20:51:14 2022 TegaUpdateComputersCDS upgrade Front-end machine setupHere is a summary of what needs doing following
the chat with Jamie today.

 
 IMG_20220810_171002928.jpgIMG_20220810_171019633.jpg 
  6540   Tue Apr 17 11:05:04 2012 JamieUpdateCDSCDS upgrade in progressI am continuing to attempt to upgrade the
CDS system to RTS 2.5.  Systems will
continue to be up and down for the rest of
  
  6541   Tue Apr 17 19:03:09 2012 JamieUpdateCDSCDS upgrade in progressUpgrade progresses, but not complete. 
There are some relatively minor issues, and
one potentially big issue.
  
  11390   Wed Jul 1 19:16:21 2015 JamieSummaryCDSCDS upgrade in progressThe CDS upgrade is now underway

Here's
what's happened so far:


Installed and linked in
  
  6552   Fri Apr 20 19:54:57 2012 JamieUpdateCDSCDS upgrade problemsI ran into a couple of snags today.
A big one is that the framebuilder
daqd started going haywire when I told it
  
  6546   Wed Apr 18 19:59:48 2012 JamieUpdateCDSCDS upgrade successThe upgrade is nearly complete:

    new daqd code is running
on fb
    the fe/daqd timing issue
  
  16881   Fri May 27 17:46:48 2022 PacoSummaryComputersCDS upgrade visit, downfall and rise of c1lsc models[Paco, Anchal-remote, Yuta, JC]

Sometime around noon today, right
after cds upgrade planning tour, c1lsc FE
  
  11397   Wed Jul 8 21:02:02 2015 JamieSummaryCDSCDS upgrade: another step forward, so we're back to where we started (plus a bit?)Koji did a bit of googling to determine
that 'Wrong Network' status message
could be explained by the fb myrinet 
  
  11402   Mon Jul 13 01:11:14 2015 JamieSummaryCDSCDS upgrade: current assessmentdaqd is still behaving unstably. 
It's still unclear what the issue is.

The current failures look like
  
  11427   Sat Jul 18 15:37:19 2015 JamieSummaryCDSCDS upgrade: current statusSo it appears we have found a semi-stable
configuration for the DAQ system post upgrade:

 cds-good.pngsus-damped.png 
  11400   Thu Jul 9 16:50:13 2015 JamieSummaryCDSCDS upgrade: if all else fails try throwing metal at the problemI roped Rolf into coming over and adding
his eyes to the problem.  After much
discussion we couldn't come up with any
  
  11404   Mon Jul 13 18:12:50 2015 JamieSummaryCDSCDS upgrade: left running in semi-stable configurationI have been watching daqd all day and I
don't feel particularly closer to understanding
what the issues are.  However, things
  
  11406   Tue Jul 14 09:08:37 2015 JamieSummaryCDSCDS upgrade: left running in semi-stable configurationOvernight daqd restarted itself only about
twice an hour, which is an improvement:


controls@fb /opt/rtcds/caltech/c1/target/fb
  
  11408   Tue Jul 14 10:28:02 2015 ericqSummaryCDSCDS upgrade: left running in semi-stable configurationThere remains a pattern to some of the
restarts, the following times are all
reported as restart times. (There are others
  
  11409   Tue Jul 14 11:57:27 2015 jamieSummaryCDSCDS upgrade: left running in semi-stable configuration


  
  11398   Thu Jul 9 13:26:47 2015 JamieSummaryCDSCDS upgrade: new mx 1.2.16 installedI rebuilt/installed mx 1.2.16 to use "ether-mode",
instead of the default MX-10G:


controls@fb
  
  11396   Wed Jul 8 20:37:02 2015 JamieSummaryCDSCDS upgrade: one step forward, two steps backAfter determining yesterday that all the
daqd issues were coming from the frame writing,
I started to dig into it more today. 
  
  11412   Tue Jul 14 16:51:01 2015 JamieSummaryCDSCDS upgrade: problem is not disk accessI think I have now determined once and
for all that the daqd problems are NOT due
to disk IO contention.
  
  11393   Tue Jul 7 18:27:54 2015 JamieSummaryCDSCDS upgrade: progress!After a couple of days of struggle, I made
some progress on the CDS upgrade today:

 2.9-RTS-OK.pngC1X04_GDS_TP.png 
  11415   Wed Jul 15 13:19:14 2015 JamieSummaryCDSCDS upgrade: reducing mx end-points as last ditch effortI tried one last thing, suggested by Keith
and Gerrit.  I tried reducing the number
of mx end-points on fb to zero, which should
  
  11417   Wed Jul 15 18:19:12 2015 JamieSummaryCDSCDS upgrade: tentative stabilty?Keith Thorne provided his eyes on the situation
today and had some suggestions that might
have helped things
  
  8547   Tue May 7 23:03:12 2013 KojiConfigurationCDSCDS workSummary:
c1rfm / c1lsc / c1ass / c1sus were
  
  11221   Wed Apr 15 20:54:18 2015 JenneUpdateComputer Scripts / ProgramsCDSutils upgrade badThe SUS align/misalign scripts don't
work after the new CDS utils upgrade. 

I don't know if it's looking
  
  11223   Wed Apr 15 23:29:08 2015 JenneUpdateComputer Scripts / ProgramsCDSutils upgrade undoneQ remotely reverted this change. 
Scripts seem to work again.

  
  11240   Thu Apr 23 21:05:23 2015 ranaUpdateComputer Scripts / ProgramsCDSutils upgrade undoneQ: please update this Wiki
page with the go-back procedure:
  
  11220   Wed Apr 15 15:14:18 2015 ericqUpdateComputer Scripts / ProgramsCDSutils upgraded to v474CDSutlils has been updated to the newest
version, 474; there are some matrix interface
methods that will make our locking scripts
  
  7013   Mon Jul 23 20:34:38 2012 JamieOmnistructureComputersCHECK IN YOUR CHANGES TO THE SVNI'm seeing LOTS OF STUFF NOT CHECKED INTO
THE SVN!!!  both modified
  
  5581   Fri Sep 30 03:36:19 2011 SureshUpdateComputer Scripts / ProgramsCIOO modified, but not yet compiledI have added a switch in series with the
WFS_GAIN. And I have also added a LKIN_OUT_MATRX
between the lockin-outputs and the MC suspensions. 
  
  16248   Thu Jul 15 14:25:48 2021 PacoUpdateLSCCM board[gautam, paco]

We tested the CM board by implementing
the high bandwidth IR lock (single arm).
 high_BW_TFs.pdf 
  14769   Wed Jul 17 21:22:41 2019 gautamUpdateCDSCM board Latch Enable subtlety[koji, gautam]

Koji pointed out an important subtlety
pertaining to the "LATCH ENABLE"
  
  14790   Sun Jul 21 12:55:38 2019 gautamUpdateCDSCM board Latch Enable test scriptDATED, SEE   LatchLogic.pdfLatchLogicTest.png 
  9935   Fri May 9 04:09:39 2014 JenneUpdateLSCCM board boost turn-on checkoutAs part of checking the common mode board
before we get too carried away with using
it, I looked at the time series of the
  
  9938   Fri May 9 14:01:24 2014 JenneUpdateLSCCM board boost turn-on checkoutNote:  I thought I was editing elog
9935, but somehow this became a whole
 17x 
  15330   Thu May 14 00:21:03 2020 gautamUpdateLSCCM board boostsSummary:

I think the boosts that are currently
stuffed on the CM board are too
 boosts.pdfboosts_noise.pdf 
  10965   Mon Feb 2 22:59:49 2015 diegoUpdateLSCCM board input switched to AS55[Diego, Jenne]

We just changed the input to the
CM board from REFL11 to AS55.
  
  15042   Thu Nov 21 12:46:22 2019 gautamUpdateLSCCM board studyIn preparation for trying out some high-bandwidth
Y arm cavity locking using the CM board,
I hooked up the POY11_Q_Mon channel of the
 YARM_CMslow.pdf 
  15043   Thu Nov 21 13:14:33 2019 KojiUpdateLSCCM board studyOne of the differences between the direct
POY and the CM_SLOW POY is the presence of
the CM Servo gain stages. So this might mean
  
  10966   Tue Feb 3 04:01:55 2015 diegoUpdateLSCCM servo & AO path status[Diego, Jenne]

Tonight we worked on the CM board
and AO path:
 CARM_03-02-2015_031754.pdf 
  10969   Tue Feb 3 16:36:33 2015 ericqUpdateLSCCM servo & AO path statusI have removed REFLDC and the SR560 offsetter
from the CM board IN2. Now, analog AS55 I
lives there, for our single arm testing.
 yarmAO.pdf 
  10991   Mon Feb 9 17:47:17 2015 diegoUpdateLSCCM servo & AO path statusI wrote the script with the recipe we used,
using the Yarm and AS55 on the IN2 of the
CM board; however, the steps where the offset
  
  14948   Tue Oct 8 03:32:42 2019 KojiUpdateCDSCM servo board testing[Koji]

The logic chips 74ALS573
were replaced. And now the gain sliders are
 7x 
  14955   Tue Oct 8 18:42:39 2019 KojiUpdateCDSCM servo board testingThe boost filters of the CM servo
board were tested. Their ZPK models were
made.
 boosts.pdf 
  14965   Mon Oct 14 16:06:28 2019 KojiUpdateCDSCM servo board testingCM Board Slow out (digital length control)
path transfer function / pole-zero filter
pair (79Hz/1.6kHz) transfer function
 pole_zero_filter.pdf 
  14966   Mon Oct 14 16:19:30 2019 KojiUpdateCDSCM servo board testingFor the CM board modeling purpose, the
transfer function from TESTA2 to TESTB2 was
needed. (Attachment 1)
 testb2.pdf 
  14967   Mon Oct 14 16:25:03 2019 KojiUpdateCDSCM servo board testingThe output stage (and AO GAIN stage) of
the MC board was modelled. The transfer function
was measured with the injection from EXC
 servo_out.pdf 
  14968   Mon Oct 14 16:34:42 2019 KojiUpdateCDSCM servo board testingInput referred offsets on the IN1/IN2 were
tested with different gain settings. The
two inputs were plugged by the 50 ohm terminators.
 in12_output_offset.pdfin12_input_offset.pdfin12_input_offset2.pdf 
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