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ID Date Author Type Category Subject
  6687   Fri May 25 20:45:25 2012 Duncan MacleodSummaryComputer Scripts / Programs40m summary webpages

There is now a job in the crontab that will run the shell wrapper every hour, so the pages _should_ take care of themselves. If you make adjustments to the configuration file they will get picked up on the hour, or you can just run the script by hand at any time.

$ crontab -l
# m h  dom mon dow   command
0 */1 * * * bash /home/controls/public_html/summary/bin/c1_summary_page.sh > /dev/null 2>&1

  6686   Fri May 25 19:13:10 2012 Duncan MacleodSummaryComputer Scripts / Programs40m summary webpages

40m summary webpages

 The aLIGO-style summary webpages are now running on 40m data! They are running on megatron so can be viewed from within the martian network at:

http://192.168.113.209/~controls/summary

At the moment I have configured the 5 seismic BLRMS bands, and a random set of PSL channels taken from a strip tool.

Technical notes

  • The code is in python depending heavily on the LSCSoft PyLAL and GLUE modules.
    • /home/controls/public_html/summary/bin/summary_page.py
  • The HTML is supported by a CSS script and a JS script which are held locally in the run directory, and JQuery linked from the google repo.
    • /home/controls/public_html/summary/summary_page.css
    • /home/controls/public_html/summary/pylaldq.js
  • The configuration is controlled via a single INI format file
    • /home/controls/public_html/summary/share/c1_summary_page.ini

Getting frames

Since there are no segments or triggers for C1, the only data sources are GWF frames. These are mounted from the framebuilder under /frames on megatron. There is a python script that takes in a pair of GPS times and a frame type that will locate the frames for you. This is how you use it to find T type frames (second trends) for May 25 2012:

python /home/controls/public_html/summary/bin/framecache.py --ifo C1 --gps-start-time 1021939215 --gps-end-time 1022025615 --type T -o framecache.lcf

If you don't have GPS times, you can use the tconvert tool to generate them

$ tconvert May 25
1021939215

The available frame types, as far as I'm aware are R (raw), T (seconds trends), and M (minute trends).

Running the code

The code is designed to be fairly easy to use, with most of the options set in the ini file. The code has three modes - day, month, or GPS start-stop pair. The month mode is a little sketchy so don't expect too much from it. To run in day mode:

python /home/controls/public_html/summary/bin/summary_page.py --ifo C1 --config-file /home/controls/public_html/summary/share/c1_summary_page.ini --output-dir . --verbose --data-cache framecache.lcf -SRQDUTAZBVCXH --day 20120525

Please forgive the large apparently arbitrary collection of letters, since the 40m doesn't use segments or triggers, these options disable processing of these elements, and there are quite a few of them. They correspond to --skip-something options in long form. To see all the options, run

python /home/controls/public_html/summary/bin/summary_page.py --help

There is also a convenient shell script that will run over today's data in day mode, doing everything for you. This will run framecache.py to find the frames, then run summary_page.py to generate the results in the correct output directory. To use this, run

bash /home/controls/public_html/summary/bin/c1_summary_page.sh

Configuration

Different data tabs are disabled via command link --skip-this-tab style options, but the content of tabs is controlled via the ini file. I'll try to give an overview of how to use these. The only configuration required for the Seismic BLRMS 0.1-0.3 Hz tab is the following section:

 

[data-Seismic 0.1-0.3 Hz]
channels = C1:PEM-RMS_STS1X_0p1_0p3,C1:PEM-RMS_STS1Y_0p1_0p3,C1:PEM-RMS_STS1Z_0p1_0p3
labels = STS1X,STS1Y,STS1Z
frame-type = R
plot-dataplot1 =
plot-dataplot3 =
amplitude-log = True
amplitude-lim = 1,500
amplitude-label = BLRMS motion ($\mu$m/s)

The entries can be explained as follows:

  1. '[data-Seismic 0.1-0.3 Hz] - This is the section heading. The 'data-' mark identifies this as data, and is a relic of how the code is written, the 'Seismic 0.1-0.3 Hz' part is the name of the tab to be displayed in the output.
  2. 'channels = ...' - This is a comma-separated list of channels as they are named in the frames. These must be exact so the code knows how to find them.
  3. 'labels = STS1X,STS1Y,STS1Z' - This is a comma-separated list of labels mapping channel names to something more readable for the plots, this is optional.
  4. 'frame-type = R' - This tells the code what frame type the channels are, so it can determine from which frames to read them, this is not optional, I think.
  5. 'plot-dataplotX' - This tells the code I want to run dataplotX for this tab. Each 'dataplot' is defined in it's own section, and if none of these options are given, the code tries to use all of them. In this configuration 'plot-dataplot1' tells the code I want to display the time-series of data for this tab.
  6. 'amplitude-XXX = YYY' - This gives the plotter specific information about this tab that overrides the defaults defined in the dataplotX section. The options in this example tell the plotter that when plotting amplitude on any plot, that axis should be log-scale, with a limit of 1-500 and with a specific label. The possible plotting configurations for this style of option are: 'lim', 'log', 'label', I think.

Other compatible options not used in this example are:

 

  • scale = X,Y,Z - a comma-separated list of scale factors to apply to the data. This can either be a single entry for all channels, or one per channel, nothing in between.
  • offset = X,Y,Z - another comma-separate list of DC offsets to apply to the data (before scaling, by default). DAQ noise may mean a channel that should read zero during quick times is offset by some fixed amount, so you can correct that here. Again either one for all channels, or one per channel.
  • transform = lambda x: f(x) - a python format lambda function. This is basically any mathematical function that can be applied to each data sample. By default the code constructs the function 'lambda d: scale * (d-offset)', i.e. it calibrates the data by removing the offset an applying the scale.
  • band = fmin, fmax - a low,high pair of frequencies within which to bandpass the data. Sketchy at best...
  • ripple_db = X - the ripple in the stopband of the bandpass filter
  • width = X - the width in the passband of the bandpass filter
  • rms_average = X - number of seconds in a single RMS average (combine with band to make BLRMS)
  • spectrum-segment-length = X - the length of FFT to use when calculating the spectrum, as a number of samples
  • spectrum-overlap = X - the overlap (samples) between neighbouring FFTs when calculating the spectrum
  • spectrum-time-step = X - the length (seconds) of a single median-mean average for the spectrogram

At the moment a package version issue means the spectrogram doesn't work, but the spectrum should. At the time of writing, to use the spectrum simple add 'plot-dataplot2'.

You can view the configuration file within the webpage via the 'About' link off any page.

Please e-mail any suggestions/complaints/praise to duncan.macleod@ligo.org.

  6685   Fri May 25 17:52:08 2012 JamieUpdateComputersallegra now running Ubuntu 10.04

The last of the control room machines is now upgraded.

  6684   Fri May 25 17:50:38 2012 JamieUpdateComputersASS scripts on new ubuntu machines

Quote:

[Den, Yuta]

Background:
 ASS and many other scripts don't work on new ubuntu machines.

What we did:
1. Installed C-shell on rossa and rosalba(Ubuntu machine).
  sudo apt-get insall csh

2. Find out that
  /opt/rtcds/caltech/c1/scripts/AutoDither/alignY

runs, but
  /opt/rtcds/caltech/c1/scripts/medmrun /opt/rtcds/caltech/c1/scripts/AutoDither/alignY

doesn't run. It gives us the following error messages.

ezcawrite: error while loading shared libraries: libca.so: cannot open shared object file: No such file or directory
ezcaswitch: error while loading shared libraries: libca.so: cannot open shared object file: No such file or directory

Result:
 ASS scripts run on rossa and rosalba, but not with medmrun.
 At least ASS scripts run on pianosa(ubuntu machine) with medmrun. So we decided to wait for JAMIE to fix it.

Apparently the environment was not being properly inherited by the scripts launched from medmrun.  We modified the medmrum script so that it executes things with an interactive shell ("bash -i -c ...") and this fixed the problem (by assuring that it sources all the interactive environment configs (i.e. ~/.bashrc)).  I'm still not sure why we were seeing different behavior on pianosa, but at least the solution we have now should be robust.

As a reminder, all scripts launched from MEDM should use medmrun:

/opt/rtcds/caltech/c1/scripts/medmrun
  6683   Fri May 25 16:58:54 2012 JamieConfigurationComputers.bashrc for workstations

I have setup a shared .bashrc for all the workstations that is symlinked to the normal location on all machines:

controls@rossa:~ 0$ ls -al /home/controls/.bashrc 
lrwxrwxrwx 1 controls controls 23 2012-05-25 15:37 /home/controls/.bashrc -> /users/controls/.bashrc
controls@rossa:~ 0$ 

This should help simplify maintenance considerably.  Editing that file on one machine will edit it for all.  Just edit this one file!  Don't try to get fancy and add extra files!

I also added a bunch of aliases that had previously been missing.  This should help with some of the problems that people had been having.

NOTE: PLEASE DO NOT CHANGE THE DEFAULT SHELL!  We are using bash, because that's what the sites are now using and we want to be as compatible as possible.

You can of course still write scripts in csh/tcsh or use tcsh in a shell if you wish.   Just don't change the default shell for the controls user.

  6682   Fri May 25 16:10:53 2012 KojiUpdateGeneralStripTool on Zita restored

ssh -X pianosa

On pianosa

StripTool PSL.strip&
StripTool IOO.strip&
StripTool seismic.strip&

 

  6681   Fri May 25 13:24:48 2012 DenUpdateSUSMC3

AA IN -> COIL DRIVER IN transfer function for MC3

freq_resp.png

I've provided excitation to the AA input, the same for all OSEM channels. In the digital domain coherence between C1:SUS-MC3_ULSEN_INMON / C1:SUS-MC3_ULCOIL_INMON and other channels OSEM -> COIL is 1 starting from 0.1Hz.

test_dig.png

The only thing left to understand is why the coherence AA IN / COIL DRIVER IN measured in the analog domain is not 1 in the frequency range 0.1 - 1 Hz. It does not look like just SRS noise. I've connected Ch 1 and 2 to the source, coherence is close to 1.

  6680   Fri May 25 02:56:44 2012 DenUpdateSUSMC3 local damping

I've terminated input to AA filters and measured signal to coils C1:SUS-MC3_??COIL_OUT.

DSC_4305.JPG

 

I compared this noise to the signal when OSEM are connected to ADC.

    osem_noise.png

 

I made BNC -> LEMO board such that all LEMOs have the same signal equal to BNC signal. I provided excitation of 50 mV as white noise to the input of the AA filter and measured coherence between excitation and MC3 coil driver. The path is

AA -> ICS 110 -> Pentium -> Pentek -> AI -> Univ Dewhitening -> Coil Driver

As all inputs have the same signal, matrices that recombine the signals should not affect coherence. But what I got for coherence between AA IN / Dewhitening OUT is

osem_coil.png

  6679   Thu May 24 19:39:18 2012 SureshUpdateIOOMC and WFS alignment adjusted

[Yuta, Suresh]

We found that the MC was not locking and that the alignment between PSL and MC was too poor to obtain a TEM00 mode in the MC.   To correct the situation we went through the following steps:

1) We burt restored the MC alignment slider values to their values at 3:07 AM of today

2) We turned off the MC-autolocker and the ASC signal to the coils.   Then aligned the PSL beam into the MC (with the MC servo loop off) to obtain the TEM00 mode.  We had to adjust the zig-zag at the PSL output by quite a bit to maximise MC transmission.

3) We then centered the spot on the MC2 face and centered the transmitted beam on the MC2_TRANS_QPD

4) Next, we centered the beams on the MC_WFS sensors.

5) Turning on the WFS loops after this showed that everything works fine and WFS loops do not accumulate large offsets.

 

 

  6678   Thu May 24 16:39:47 2012 steveUpdateGeneralsteve's webpage example

3 strip charts monitoring on 24 hours time scale: Vac,  PSL-IFO,  SUS and 10 channel video monitoring inside - outside  of 40m lab

Attachment 1: 05241201.PDF
05241201.PDF
  6677   Thu May 24 16:13:05 2012 yutaUpdateComputersASS scripts on new ubuntu machines

[Den, Yuta]

Background:
 ASS and many other scripts don't work on new ubuntu machines.

What we did:
1. Installed C-shell on rossa and rosalba(Ubuntu machine).
  sudo apt-get insall csh

2. Find out that
  /opt/rtcds/caltech/c1/scripts/AutoDither/alignY

runs, but
  /opt/rtcds/caltech/c1/scripts/medmrun /opt/rtcds/caltech/c1/scripts/AutoDither/alignY

doesn't run. It gives us the following error messages.

ezcawrite: error while loading shared libraries: libca.so: cannot open shared object file: No such file or directory
ezcaswitch: error while loading shared libraries: libca.so: cannot open shared object file: No such file or directory

Result:
 ASS scripts run on rossa and rosalba, but not with medmrun.
 At least ASS scripts run on pianosa(ubuntu machine) with medmrun. So we decided to wait for JAMIE to fix it.

  6676   Thu May 24 15:10:43 2012 SureshSummaryGeneralIOO (MC) health check webpage layout

   Here is the suggested layout of the MC health check web page layout. I will update the Omnigraffle file as people comment and suggest changes.  If you want the file let me know.

 

MC_Health_Check.pdf

  6675   Thu May 24 14:49:59 2012 KojiSummaryGeneralDaily news idea

Top tab categolies:

  • Summary
  • CDS
    • CDS Status
  • PEM
    • Seismic 24h trend
    • Accoustic 24h trend
    • Weather/Temp/Barometer/etc 24h trend
  • PSL/IOO
    • PSL summary trend / duty ratio
    • IOO summary (MC Health Check/IOO QPD trends / IFO QPD trends / Transmon QPD trends) duty ratio
  • SUS
    • Summary
    • OSEM PSD/trend
    • OPLEV PSD/trend
  • IFO
    • DC Mon
    • RF ports
    • OMC
  • Steve
    • Vacuum
  • Misc.

IFO

  • DC Monitors
    • Incident beam power trend (24h)
    • AS/REFL/POP/TRX/TRY bean power trend (24h)
    • AS/POP RF beam power trend (24h)
  • RF port
    • DARM sensitivity PSD (mean/min/max/reference) for an hour
    • DARM/CARM/PRCL/MICH/SRCL PSD
    • DARM/CARM/PRCL/MICH/SRCL (freq vs Gaussianity)
    • DARM/CARM/PRCL/MICH/SRCL calibration trend
  • OMC
    • TBD

 

  6674   Thu May 24 13:28:38 2012 DenUpdatePEMHEPA

HEPA filter was running at 90% of max. I reduced it to 20%. Acoustic noise moved down

psl_acoustic.png

The range of MCL oscillations has also decreased but fluctuations in the frequency range 10-100 are still present.

MCL is much more stable now.

mcl_90.png        mcl_20.png

 

  6673   Thu May 24 12:23:00 2012 DenUpdateGeneralconnection error monitor for the website

The main page of connection error monitor can be a scheme of computers and models with connections. If there is an error in connection, the corresponding arrows turns from green to red.

errors_overview.png

 

Each arrow is a line to a more detailed information about the channels.

errors.png

  6672   Thu May 24 10:10:04 2012 steveUpdateIOOPMC locked

 The PMC  behavior is not changed.

 

Attachment 1: pmc4d.png
pmc4d.png
  6671   Thu May 24 02:55:36 2012 DenUpdatePEMacoustic noise in MCL

Mic in the PSL showed that fluctuations in the MCL in the frequency range 10 - 100 Hz are due to acoustic noise. I've measured MCL, MCL / PSL mic coherence 2 times with interval 300 seconds.

Surprisingly, acoustic noise level did not change but MC sometimes is more sensitive to acoustic noise, sometimes less.

audio_noise.png

  6670   Thu May 24 01:17:13 2012 DenUpdateCDSPMC autolocker

Quote:

 

  • SCRIPT
    • Auto-locker for PMC, PSL things - DEN

 I wrote auto-locker for PMC. It is called autolocker_pmc, located in the scripts directory, svn commited. I connected it to the channel C1:PSL-PMC_LOCK.  It is currently running on rosalba. MC autolocker runs on op340m, but I could not execute the script on that machine

op340m:scripts>./autolock_pmc
./autolock_pmc: Stale NFS file handle.

I did several tests, usually, the script locks PMC is a few seconds. However, if PMC DC output has been drift significantly, if might take longer as discussed below.

The algorithm:

       if autolocker if enabled, monitor PSL-PMC_PMCTRANSPD channel
       if TRANS is less then 0.4, start locking:
               disengage PMC servo by enabling PMC TEST 1
               change PSL-PMC_RAMP unless TRANS is higher then 0.4 (*)
               engage PMC servo by disabling PMC TEST 1
       else sleep for 1 sec
 

(*) is tricky. If RAMP (DC offset) is specified then TRANS will be oscillating in the range ( TRANS_MIN, TRANS_MAX ). We are interested only in the TRANS_MAX. To make sure, we estimate it right, TRANS channel is read 10 times and the maximum value is chosen. This works good.

Next problem is to find the proper range and step to vary DC offset RAMP. Of coarse, we can choose the maximum range (-7, 0) and minimum step 0.0001, but it will take too long to find the proper DC offset. For that reason autolocker tries to find a resonance close to the previous DC offset in the range (RAMP_OLD - delta, RAMP_OLD + delta), initial delta is 0.03 and step is 0.003. It resonance is not found in this region, then delta is multiplied by a factor of 2 and so on. During this process RAMP range is controlled not to be wider then (-7, 0).

The might be a better way to do this. For example, use the gradient descent algorithm and control the step adaptively. I'll do that if this realization will be too slow.

I've disabled autolocker_pmc for the night.

  6669   Wed May 23 21:32:15 2012 SureshUpdateIOOWFS didn't turn off automatically

Quote:

I just sat down in the control room, and discovered the PMC (and everything else) unlocked.  I relocked the PMC, but the MC wasn't coming back.  After a moment of looking around, I discovered that the WFS were on, and railing.  I ran the "turn WFS off" script, and the MC came back right away, and the WFS came on as they should.

We need to relook at the WFS script, or the MC down script, to make sure that any time the MC is unlocked, no matter why it unlocked, the WFS output is off and the filter histories are cleared.

    The only script that can currently take this action is the MC autolocker.  If that is disabled first and the PMC unlocks later, the WFS will not be turned off.  During the last round of discussions we had about the autolocker script, sometime last Nov, we decided that too much automation is not desirable and that the autolocker should be kept as simple as possible.

 

  6668   Wed May 23 20:41:37 2012 SureshBureaucracyGeneral40m Meeting Action Items: Tip-tilts : cabling and electronics

Quote:
..........
  • Tip Tilts
    • Prepare electronics for TTs (coil drivers) - JAMIE
    • In-air TT testing to confirm we can control / move TTs before we vent - SURESH
    • Connect TTs to digital system and controls, lay cables if needed - JAMIE with SURESH
  • .....

 

 [Koji, Suresh]

  We tried to locate the sixteen analog output channels we need to control the four tip-tilts (four coils on each).  We have only 8 available channels on the C1SUS machine. 

  So we will have to plug-in a new DAC output card on one of the machines and it would be logical to do that on the C1IOO machine as the active tip-tilts are conceptually part of the IOO sub-system.   We have to procure this card if we do not already have it.  We have to make an interface between this card output and a front panel on the 1X2 rack.  We may have to move some of the sub-racks on the 1X2 rack to accommodate this front panel.

  We checked out the availability of cards (De-whitening, Anti-imaging, SOS coil drivers)  yesterday.  In summary: we have all the cards we need (and some spares too).  As the De-whitening and Anti-imaging cards each have 8 channels, we need only two of each to address the sixteen channels.  And we need four of the SOS coil drivers, one for each tip-tilt.  There are 9 slots available on the C1IOO satellite expansion chassis (1X1 rack), where these eight cards could be accommodated.

  There are two 25 pin feed-thoughs, where the PZT drive signals currently enter the BS chamber.  We will have to route the SOS coil driver outputs to these two feed-throughs. 

   Inside the BS chamber, there are cables which carry the PZT signals from the chamber wall to the the table top, where they are anchored to a post (L- bracket).  We need a 25-pin-to-25-pin cable (~2m length) to go from the post to the tip-tilt (one for each tip-tilt).  And then, of course, we need quadrapus cables (requested from Rich) which fit inside each tip-tilt to go to the BOSEMs.

   I am summarising it all here to give an overview of the work involved.

 

 

  6667   Wed May 23 13:57:11 2012 JenneBureaucracyGeneral40m Meeting Action Items

PRIORITY ITEMS:

Align Ygreen beam - JENNE, YUTA

Arm cavity sweeps, mode scan - JENNE, YUTA

ASS doesn't run on Ubuntu! or CentOS Fix it! - YUTA, JENNE, JAMIE's help

Input matricies, output filters to tune SUS.  check after upgrade. - JENNE

POX11 whitening is not toggling the analog whitening??? - JAMIE, JENNE, KOJI

Decide on plots for 40m Summary page - DEN, STEVE, JENNE, KOJI, JAMIE, YUTA, SURESH, RANA, DUNCAN from Cardiff/AEI

 Look into PMC PZT drift - PZT failing? Real MC length change? - JENNE, KOJI, YUTA

THE FULL LIST:

  • General
    • Revamp control room - more monitors, maybe move TV shelves. - JENNE
    • Audio system for the signals!!!! Even a crappy one! - LEO
  • SUS
    • Input matricies, output filters to tune SUS.  check after upgrade. - JENNE
  • IFO
    • Fix occasional common-mode power transient in the arm transmissions. Probably an alignment thing. Would ISS help? - MIKEJ?
    • Drift of the green incident axis -> Assess the amount of the drift / replace the mount - JENNE, KOJI
    • Calibration of POP22 / AS110 - JENNE
    • PMC/IMC/ARM characterization (loss, finesse, reflectivity, etc) - JENNE
    • Align green beam - JENNE, YUTA
    • Arm cavity sweeps, mode scan - JENNE, YUTA
    • Align AS OSA (others?) - JENNE  
    • Investigate PRMI glitches, instability - JENNE
    • PZT or Picomotor mounts for PSL/ALS beams - WHO??
    • ALS on the both arm simultaneously / common / diff ALS scripts - JENNE
  • CDS
    • Capture OSA signals in CDS (the 'scope TDS1001B has a USB port in the back for connecting to the computer) - WHO??
    • Transmon (arms) for high and low power - WHO??
    • POX11 whitening is not toggling the analog whitening??? - JAMIE, JENNE, KOJI
    • Install guardians to monitor EPICS values - WHO??
  • Electronics
    • Actuator noise level characterization (coil driver response in V/m & coil driver noise level V/rtHz) - WHO??
    • Beat box - KOJI
    • I/Q DFD - WHO??
    • Improvement of POP22/110/AS110 RF circuits. - WHO??
  • MEDM
    • Complete 40m overview screen - everything should be clickable with pseudo 3D icons - JENNE
    • Better suspension screen - copy from sites. - WHO??
    • Script to generate a MEDM tree - WHO??
    • Resurrect MEDM snapshots - WHO??
    • New ! buttons on every screen, include wiki page - WHO??
    • Screen for errors in signal transmission between models - DEN
  • SCRIPT
    • Locking scripts with integrator triggers / disabling when unlocked - JENNE
    • Daily diagnosis of the MC spot positions (there must be something already...) - SURESH?
    • Daily/occasional adjustment of the incident axis on the MC - SURESH?
    • IFO_CONFIGURE scripts still do a burt restore, so step the optics.  Need to remove optic alignment from config .snap files, use reg restore script instead. - JENNE
    • OPLEV/OSEM trending script before the IFO work for diagnosis. Put into 40m summary screen. - JENNE, DUNCAN from Cardiff/AEI
    • Auto-locker for arms - JENNE
    • Auto-locker for PMC, PSL things - DEN
    • Diagnostic script for CDS - mx_stream, other stuff. - WHO??
  • Video
    • If each video screen has a caption, that would be great - WHO??
    • GUI interface of "videoswitch" - MIKEJ
    • Mouse Jiggler for Zita (called Swinput?) - JENNE
  • Ubuntu vs. CentOS
    • burttoday is not aliased in ubuntu.    burttoday:      aliased to cd /opt/rtcds/caltech/c1/burt/autoburt/today/ - JAMIE
    • Upgrade Allegra, make sure connect to DTT, Dataviewer, AWG. - JAMIE
    • ASS doesn't run on Ubuntu! or CentOS Fix it! - JENNE, JAMIE's help
    • CentOS machines cannot open simulink models properly (get "Bad Link"s everywhere, so you can't do anything useful) - JAMIE
  • MM
    • IPPOS beam measurement - SURESH with JENNE
    • AS beam measurement (if beam is bright enough) - SURESH and JENNE
    • Mode matching calculations, sensitivity to MC waist measurement errors, PRM position - JENNE
    • Think up diagnostic measurement to determine mode matching to PRC while chambers are open, while we tweak MMT - JAMIE, JENNE, KOJI, SURESH
    • Use sensoray to capture, measure beam mode at AS, POP - YUTA
  • Stray Light
    • Scattered light measurement at the end stations: design / confirmation of the mechanical parts/optics/cameras - JAN
    • Align AUX laser into dark port - KOJI, YUTA
  • OAF
    • OAF comparison plot, both online and offline, comparing static, adaptive and static+adaptive - DEN
    • Static-only OAF noise budget (Adaptive noise budget as next step) - DEN
    • Script for daily / weekly re-calculation of Wiener, post to elog if need changing - DEN
  • Tip Tilts
    • Prepare electronics for TTs (coil drivers) - JAMIE
    • In-air TT testing to confirm we can control / move TTs before we vent - SURESH
    • Connect TTs to digital system and controls, lay cables if needed - JAMIE with SURESH
  • RF Photodiodes
    • Opto Energy diode laser - purchase - ERICG
    • Purchase fibers, splitters, other supplies - ERICG
    • Set everything up - ERICG

 

  6666   Wed May 23 11:30:39 2012 steveUpdatePEMnew emergency back up lights installed

New self checking emergency back up lights were installed at 13 locations in the 40m lab.

Attachment 1: IMG_1217.JPG
IMG_1217.JPG
  6665   Wed May 23 10:40:21 2012 steveUpdateIOOPMC locked

Quote:

I locked the PMC and the MC followed instantly.

 

Attachment 1: pmc.png
pmc.png
  6664   Tue May 22 23:36:02 2012 DenUpdatePEMmircophones

I've put 5 EM172 microphones close together and measured there signal and coherence. They are plugged in to accelerometer channels.

close_micro.png

 

Then I've suspended microphones around the MC - 2 at MC2, 2 at MC1,3 and 1 at PSL. The amplifier box is above STS readout box.

 DSC_4288.JPG           DSC_4299.JPG       DSC_4304.JPG      DSC_4302.JPG

Microphone close to PSL gave a strong coherence with MC_F, as we already saw it using Blue Bird Microphone.

ACC_MC2_XY channels <=> MC2 microphones

ACC_MC1_XY channels <=> MC1,3 microphones

ACC_MC1_Z channel <=> PSL microphones

5_mic.png

 

  6663   Tue May 22 20:46:38 2012 yutaUpdateCDSMEDM suspension screens using macro

I fixed the problem Jamie pointed out in elog #6657 and #6659.

What I did:
1. Created the following template files in /opt/rtcds/userapps/trunk/sus/c1/medm/templates/ directry.

SUS_SINGLE_LOCKIN1.adl
SUS_SINGLE_LOCKIN2.adl
SUS_SINGLE_LOCKIN_INMTRX.adl
SUS_SINGLE_OPTLEV_SERVO.adl
SUS_SINGLE_PITCH.adl
SUS_SINGLE_POSITION.adl
SUS_SINGLE_SUSSIDE.adl
SUS_SINGLE_TO_COIL_MASTER.adl
SUS_SINGLE_COIL.adl
SUS_SINGLE_YAW.adl
SUS_SINGLE_INMATRIX_MASTER.adl
SUS_SINGLE_INPUT.adl
SUS_SINGLE_TO_COIL_X_X.adl
SUS_SINGLE_OPTLEV_IN.adl
SUS_SINGLE_OLMATRIX_MASTER.adl

To open these files, you have to define $(OPTIC) and $(DCU_ID).
For SUS_SINGLE_TO_COIL_X_X.adl, you also have to define $(FILTER_NUMBER), too. See SUS_SINGLE_TO_COIL_MASTER.adl.

2. Fixed the following screens so that they open SUS_SINGLE.adl.

C1SUS_WATCHDOGS.adl
C1IOO_MC_ALIGN.adl
C1IOO_WFS_MASTER.adl
C1IFO_ALIGN.adl

  6662   Tue May 22 20:24:06 2012 JamieUpdateComputersrossa is now running Ubuntu 10.04

Now same as pianosa and rosalba.  I'll upgrade allegra on Friday.

  6661   Tue May 22 20:01:26 2012 DenUpdateCDSerror monitor

I've created transmission error monitors in rfm, oaf, sus, lsc, scx, scy and ioo models. I tried to get data from every channel transmitted through PCIE and RFM. I also included some shared memory channels.

The medm screen is in the EF STATUS -> TEM. It shows 16384 for the channels that come from simulation plant. Others are 0, that's fine.

  6660   Tue May 22 13:06:11 2012 JenneUpdateIOOWFS didn't turn off automatically

I just sat down in the control room, and discovered the PMC (and everything else) unlocked.  I relocked the PMC, but the MC wasn't coming back.  After a moment of looking around, I discovered that the WFS were on, and railing.  I ran the "turn WFS off" script, and the MC came back right away, and the WFS came on as they should.

We need to relook at the WFS script, or the MC down script, to make sure that any time the MC is unlocked, no matter why it unlocked, the WFS output is off and the filter histories are cleared.

  6659   Tue May 22 11:47:43 2012 JamieUpdateCDSMEDM suspension screens using macro

Actually, it looks like we're not quite done here.  All the paths in the SUS_SINGLE screen need to be updated to reflect the move.  We should probably make a macro that points to /opt/rtcds/caltech/c1/screens, and update all the paths accordingly.

  6658   Tue May 22 11:45:12 2012 JamieConfigurationCDSPlease remember to commit SVN changes

Hey, folks.  Please remember to commit all changes to the SVN in a timely manor.  If you don't, multiple commits will get lumped together and we won't have a good log of the changes we're making.  You might also end up just loosing all of your work.  SVN COMMIT when you're done!  But please don't commit broken or untested code.

pianosa:release 0> svn status | grep -v '^?'
M       cds/c1/models/c1rfm.mdl
M       sus/c1/models/c1mcs.mdl
M       sus/c1/models/c1scx.mdl
M       sus/c1/models/c1scy.mdl
M       isc/c1/models/c1lsc.mdl
M       isc/c1/models/c1pem.mdl
M       isc/c1/models/c1ioo.mdl
M       isc/c1/models/ADAPT_XFCODE_MCL.c
M       isc/c1/models/c1oaf.mdl
M       isc/c1/models/c1gcv.mdl
M       isc/common/medm/OAF_OVERVIEW.adl
M       isc/common/medm/OAF_DOF_BLRMS.adl
M       isc/common/medm/OAF_OVERVIEW_BAK.adl
M       isc/common/medm/OAF_ADAPTATION_MICH.adl
pianosa:release 0>

  6657   Tue May 22 11:32:02 2012 JamieUpdateCDSMEDM suspension screens using macro

Very nice, Yuta!  Don't forget to commit your changes to the SVN.  I took the liberty of doing that for you.  I also tweaked the file a bit, so we don't have to specify IFO and SYS, since those aren't going to ever change.  So the arguments are now only: OPTIC=MC1,DCU_ID=36.  I updated the sitemap accordingly.

Yuta, if you could go ahead and modify the calls to these screens in other places that would be great.  The WATCHDOG, LSC_OVERVIEW, MC_ALIGN screens are ones that immediately come to mind.

And also feel free to make cool new ones.  We could try to make simplified version of the suspension screens now being used at the sites, which are quite nice.

  6656   Tue May 22 08:03:01 2012 steveUpdateSUSETMY oplev gets new laser

Quote:

 

 The typical sign of a dying gas laser is that it glows for a few minutes only. The power supplies are fine.

Two new  JDS - Uniphase 1103P lasers ( NT64-104 )  arriving on Monday, May 21

 Yesterday I swapped in new He/Ne laser with output power 3.5 mW  The return spot on qpd is large ~6mm in diameter and 20,500 counts

The spot size reduction require similar layout as ETMX oplev.

  6655   Tue May 22 00:23:45 2012 DenUpdateCDStransmission error monitor

I've started to create channels and an medm screen to monitor the errors that occur during the transmission through the RFM model. The screen will show the amount of lost data per second for each channel.

Not all channels are ready yet. For created channels, number of errors is 0, this is good.

 Screenshot.png

  6654   Mon May 21 21:27:39 2012 yutaUpdateCDSMEDM suspension screens using macro

Background:
 We need more organized MEDM screens. Let's use macro.

What I did:
1. Edited /opt/rtcds/userapps/trunk/sus/c1/medm/templates/SUS_SINGLE.adl using replacements below;

sed -i s/#IFO#SUS_#PART_NAME#/'$(IFO)$(SYS)_$(OPTIC)'/g SUS_SINGLE.adl
sed -i s/#IFO#SUS#_#PART_NAME#/'$(IFO)$(SYS)_$(OPTIC)'/g SUS_SINGLE.adl
sed -i s/#IFO#:FEC-#DCU_ID#/'$(IFO):FEC-$(DCU_ID)'/g SUS_SINGLE.adl
sed -i s/#CHANNEL#/'$(IFO):$(SYS)-$(OPTIC)'/g SUS_SINGLE.adl
sed -i s/#PART_NAME#/'$(OPTIC)'/g SUS_SINGLE.adl

2. Edited sitemap.adl so that they open SUS_SINGLE.adl with arguments like
    IFO=C1,SYS=SUS,OPTIC=MC1,DCU_ID=36
instead of opening ./c1mcs/C1SUS_MC1.adl.

3. I also fixed white blocks in the LOCKIN part.

Result:
  Now you don't have to generate every suspension screens. Just edit SUS_SIGNLE.adl.

Things to do:
 - fix every other MEDM screens which open suspension screens, so that they open SUS_SINGLE.adl
 - make SUS_SINGLE.adl more cool

  6653   Mon May 21 19:16:55 2012 KojiUpdateGeneralrossa X config

I rebooted rossa and the X sever has stalled.

  6652   Mon May 21 07:45:39 2012 steveUpdateIOOPMC locked

I locked the PMC and the MC followed instantly.

Attachment 1: pmclocked.png
pmclocked.png
  6651   Sun May 20 19:57:51 2012 DenUpdatePEMmicrophones

I've soldered EM172 microphones to BNC connectors to get data from them.

DSC_4287.JPG    DSC_4285.JPG

Then I've build an amplifier for them. The circuit is

scheme.png

I've build 6 such circuits inside 1 box. It needs +15 V to A3 and GND to A2. A1 power channel is not used.

DSC_4284.JPG     DSC_4286.JPG

LISO model for this scheme was created and simulation results were compared to measurement of each channel

freq_resp.png   noise.png

Measured noise curve (green) is the SR785 own noise.

  6650   Fri May 18 15:25:15 2012 steveUpdateSUSAR coated lens swapped in at ETMX oplev

Quote:

 ETMX oplev had 6 mm diameter beam on the qpd.  I relayed the beam path with 2 lenses  to get back  3 mm beam on the qpd

BRC 037  -100 Bi _concave lens and PCX 25  200 VIS do the job. Unfortunately the concave lens has the AR 1064.

 

 

 The uncoated bi-concave lens was replaced by AR coated one: KBC 037 -100 AR.14 resulting 35% count increase on qpd

Attachment 1: ETMXoplevlensAR.png
ETMXoplevlensAR.png
  6649   Fri May 18 11:19:17 2012 steveUpdateSUSETMY oplev laser is dead

 

 The typical sign of a dying gas laser is that it glows for a few minutes only. The power supplies are fine.

Two new  JDS - Uniphase 1103P lasers ( NT64-104 )  arriving on Monday, May 21

  6648   Thu May 17 15:31:22 2012 steveUpdateGeneralbeam trap posts & clamps for vacuum

 Aluminum posts and SS clamps for green glass traps in vacuum will be out of the shops by June 6, 2012 the latest

 

Attachment 1: 05161201.PDF
05161201.PDF 05161201.PDF
Attachment 2: 05151201.PDF
05151201.PDF
  6647   Wed May 16 14:06:49 2012 steveUpdateSUSTemperature rules

Guralp 1  is on the south side of IOO chamber

Attachment 1: temprules.png
temprules.png
  6646   Wed May 16 11:53:45 2012 JenneUpdateComputersImage Subtraction

Quote:

It doesn't look all that different, but the first image didn't have that much lit up in it to begin with.

 This is totally cool!  You can see that the OSEM lights are almost entirely gone in the subtracted image.

Can you switch to trying with one of the *TM*F cameras?  (ITMXF, ITMYF, ETMYF, ETMXF)  They tend to have more background, so there should be a more dramatic subtraction.  Den or Suresh should be able to lock one of the arms for you.

  6645   Tue May 15 23:40:46 2012 Mike J.UpdateComputersImage Subtraction

I acquired 2 raw frames of MC2 using "/users/mjenson/sensoray/sdk_2253_1.2.2_linux/capture -n -s 720x480 -f 1", one while the laser was off the mode cleaner and another while it was on:

mc2_1.bmp mc2_2.bmp

I then used "/users/mjenson/sensoray/sdk_2253_1.2.2_linux/imsub/display-image.py" to generate bitmaps of the raw images, which I then subtracted using the Python Imaging Library to generate a new image:

mc2_1-mc2_2.bmp

It doesn't look all that different, but the first image didn't have that much lit up in it to begin with. I should be able to write a script that does all of this without needing to generate new files in between acquisition and subtraction.

  6644   Tue May 15 08:44:55 2012 steveUpdateSUSETMX damping restored

ETMX sus damping restored

Attachment 1: ETMX_ETMYvar.png
ETMX_ETMYvar.png
  6643   Mon May 14 08:49:47 2012 steveUpdateSUSETMY damping restored

ETMY sus damping restored.

  6642   Fri May 11 23:33:41 2012 DenUpdateAdaptive Filteringoffline vs online

I've compared offline Wiener filtering with online static + adaptive filtering for MC_F with GUR1_XYZ and GUR2_XYZ as witness signals

off_on.jpg

Note: online filter works up to 32 Hz (AI filter at 32 Hz is used). There is no subtraction up from this frequency, just MC_F was measured in different times for online and offline filtering. This difference in MC_F in frequency range 20-100 Hz showed up again as before with microphone testing.  One can see it in 1 minute. Smth is noisy.

Reasons why online filter is worse then offline:

1. FIR -> IIR conversion produces error. Now I'm using VECTFIT approximation with 16 poles (splitting into 2 filter banks), this not enough. I tried to use 50 and split them into 5 filter banks, but this scheme is not working: zpk -> sos conversion produces error and the result filter works completely wrong.

2. Actuator TF. VECTFIT works very good here - we have only 1 resonance. However, it should be measured precisely.

3. Account for AA and AI filters that rotate the phase at 1-10 Hz by ~ 10 degrees.

  6641   Fri May 11 17:21:56 2012 JenneUpdateIOOOAF left enabled - MC unlocked for more than an hour

No leaving the OAF running until you're sure (sure-sure, not kind of sure, not pretty sure, but I've enabled guardians to make sure nothing bad can happen, and I've been sitting here watching it for 24+ hours and it is fine) that it works okay.

OAF (both adaptive and static paths) were left enabled, which was kicking MC2 a lot.  Not quite enough that the watchdog tripped, but close.  The LSCPOS output for MC2 was in the 10's or 100's of thousands of counts.  Not okay.

This brings up the point though, which I hadn't actively thought through before, that we need an OAF watchdog.  An OAF ogre?  But a benevolent ogre.  If the OAF gets out of control, it's output should be shut off.  Eventually we can make it more sophisticated, so that it resets the adaptive filter, and lets things start over, or something. 

But until we have a reliable OAF ogre, no leaving the adaptive path enabled if you're not sitting in the control room.  The static path should be fine, since it can't get out of control on it's own.

Especially no leaving things like this enabled without a "I'm leaving this enabled, I'll be back in a few hours to check on it" elog! 

  6640   Fri May 11 08:07:30 2012 JamieUpdateCDSFB

Quote:

Already for the second time today all computers loose connection to the framebuilder. When I ssh to framebuilder DAQD process was not running. I started it

controls@fb ~ 130$ sudo /sbin/init q

Just to be clear, "init q" does not start the framebuilder.  It just tells the init process to reparse the /etc/inittab.  And since init is supposed to be configured to restart daqd when it dies, it restarted it after the reloading of /etc/inittab.  You and Alex must have forgot to do that after you modified the inittab when you're were trying to fix daqd last week.

daqd is known to crash without reason.  It usually just goes unnoticed because init always restarts it automatically.  But we've known about this problem for a while.

Quote:

But I do not know what causes this problem. May be this is a memory issue. For FB

Mem:   7678472k total,  7598368k used,    80104k free

Practically all memory is used. If more is needed and swap is off, DAQD process may die.

This doesn't really mean anything, since the computer always ends up using all available memory.  It doesn't indicate a lack of memory.  If the machine is really running out of memory you would see lots of ugly messages in dmesg.

  6639   Thu May 10 22:05:21 2012 DenUpdateCDSFB

Already for the second time today all computers loose connection to the framebuilder. When I ssh to framebuilder DAQD process was not running. I started it

controls@fb ~ 130$ sudo /sbin/init q

But I do not know what causes this problem. May be this is a memory issue. For FB

Mem:   7678472k total,  7598368k used,    80104k free

Practically all memory is used. If more is needed and swap is off, DAQD process may die.

  6638   Thu May 10 21:13:01 2012 DenUpdateElectronicsADC 3

ADC 3 INPUT 4 (#3 in the c1pem model if you count from 0) is bad. It adds DC = ~1 V to the signal as well as noise. I plugged in GUR2 channels to STS1 channels (7-9).

ELOG V3.1.3-