ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
11316
|
Tue May 19 19:24:30 2015 |
rana | Update | PEM | Seismic BLRMS filters | I was wondering about the design of the
BLRMS fitlers for the seismic channels since
the STS ones seem to have so little gain |
 |
11317
|
Wed May 20 03:08:27 2015 |
rana | Update | General | some status | I think that the real clue was that the
dropouts are in some channels and not in
others: |
|
11320
|
Fri May 22 12:09:57 2015 |
rana | Update | SUS | DampRestore script problem | I will move it back. We need to fix our
scripts to not use any users/ libraries ever
again. |
|
11325
|
Tue May 26 19:57:11 2015 |
rana | Update | Computer Scripts / Programs | ifoCoupling | Looks like a very handy
code, especially with the real statistical |
|
11330
|
Thu May 28 15:10:44 2015 |
rana | Update | PEM | Seismic Confusion | You are plotting the STS channels,
not Guralp. These are for the Trillium
240 seismometer. |
|
11342
|
Mon Jun 1 20:05:36 2015 |
rana | Update | CDS | RCG Upgrade Imminent |
|
|
11360
|
Mon Jun 15 20:36:48 2015 |
rana | Update | IOO | IOO QPDs centred | after re-aligning the beam into the PMC,
I touched up the steering mirros into the
IOO QPDs so that the beams are now centered |
|
11367
|
Sun Jun 21 13:21:03 2015 |
rana | Update | PEM | Wilcoxon Accelerometer Huddle Test | To improve our sensor
noise estimate, the ACC cables should
be clamped using a rubber pad and a big dog |
|
11370
|
Mon Jun 22 14:53:37 2015 |
rana | Summary | LSC | X/Y green beat mode overlap measurement redone |
Why is there a factor of 20 power
difference? Some of it is the IR laser power
difference, but I thought that was just a |
|
11383
|
Tue Jun 30 05:47:38 2015 |
rana | Update | LSC | Use BALUNs |
|
|
11519
|
Thu Aug 20 11:09:10 2015 |
rana | Update | IOO | some points about seismic FF |
When plotting the subtraction performance,
we mainly care about the 0.5 - 10 Hz band,
so we care about the RMS in this band. Don't |
|
11538
|
Fri Aug 28 19:05:53 2015 |
rana | Update | IOO | IMC Tweak | Well, green looks better than blue, but
it makes the PCDRIVE go high, which means
its starting to saturate the EOM drive. So |
|
11539
|
Fri Aug 28 20:15:49 2015 |
rana | Update | IOO | MC2 -> MCL Actuator TF |
|
|
11540
|
Fri Aug 28 20:20:26 2015 |
rana | Update | PEM | Gur interface box cable | To help find out if Steve really melted
the inside of our precious seismometer, lets
hook it up using the handheld seismo wand |
|
11542
|
Sun Aug 30 00:03:13 2015 |
rana | Update | IOO | MCL Wiener Feedforward Final Results | Somehow it seems like the ELOG makes all
of the thumbnails way too big by default.
Did we get some sneaky upgrade recently? |
|
11545
|
Sun Aug 30 13:31:48 2015 |
rana | Update | IOO | MCL Wiener Feedforward Final Results | I'm not totally sure, but by eyeball,
this seems like the best online MCL reduction
we've ever had. Nice work. |
|
11560
|
Wed Sep 2 23:50:00 2015 |
rana | Update | PSL | PMC LO dying | Let's order a pair of 35.5 MHz Wenzel
for this guy and package like Rich has done
for the WB low noise oscillators. |
|
11561
|
Thu Sep 3 00:14:09 2015 |
rana | Configuration | IOO | IMC fast gain change for lock acq | The IMC often was making that scratchy
noise when first catching lock and sometimes
breaking. Thinking of the crappy crossover |
|
11562
|
Thu Sep 3 00:29:45 2015 |
rana | Update | ASC | ASS X not working | ran the ON script several times and it
kept pulling it away from good alignment,
even when TRX was > 0.9. |
|
11564
|
Thu Sep 3 02:12:08 2015 |
rana | Update | CDS | Simulink Webview updated | Back in 2011, JoeB wrote
some entries on how to automatically
update the Simulink webview stuff. |
|
11565
|
Thu Sep 3 02:30:46 2015 |
rana | Update | CDS | c1cal time reduced by deleting LSC sensing matrix | I experimented with removing somethings
here and there to reduce the c1cal runtime.
Eventually I deleted the LSC Sensing Matrix |
|
11567
|
Thu Sep 3 13:25:40 2015 |
rana | Update | CDS | Simulink Webview updated | added the cron script for this to megatron
to run at 8:44 AM each morning. Here's
the new MegaCron attached :-()- |
|
11569
|
Thu Sep 3 19:52:24 2015 |
rana | Summary | SUS | SUS drift monitor | Since Andrey's SUS Drift mon screen
back in 2007, we've had several versions
which used different schemes and programming |
|
11570
|
Fri Sep 4 00:58:29 2015 |
rana | Update | CDS | soldering the Generic Pentek interface board | Q and Ignacio were taking a second look
at the Pentek interface board which we're
using to acquire the POP QPD, ALS trans, |
|
11578
|
Fri Sep 4 20:06:23 2015 |
rana | Update | LSC | DRMI locked on 1F and 3F | Nice going. I think the LLO / LHO scheme
is to acquire on 1F and then cdsutils avg
to get the 3F offsets. The thinking is that |
|
11580
|
Mon Sep 7 16:30:56 2015 |
rana | HowTo | Computer Scripts / Programs | increase of window border size on Rossa | Frustrated by the single pixel width of
the windows and how hard that makes it to
drag things around, I explored StackExchange: |
|
11581
|
Mon Sep 7 18:25:16 2015 |
rana | Configuration | IOO | AOM stage is ready | The new stage missed the right height by
~2 mm. |
|
11582
|
Mon Sep 7 19:46:46 2015 |
rana | Update | PEM | Seismic BLRMS filters | As it turned out, the "STS" BLRMS
filters were all a mess, so I fixed them
up today: |
|
11583
|
Tue Sep 8 20:30:44 2015 |
rana | Update | IOO | MC WFS relief re-commissioned | I converted our MC WFS relief from CSH
to BASH today. I also added 'wait'
commands and 'echo' commands so that |
|
11585
|
Wed Sep 9 11:33:58 2015 |
rana | Update | Summary Pages | Summary Page updates |
Made most plots in IOO tab only
plot when MC_TRANS > 10000 using Eve's
MC_LOCK state definition.
added |
|
11588
|
Thu Sep 10 01:09:20 2015 |
rana | Update | LSC | Moved LSC sensing matrix notch frequencies | We looked at the DRMI noise spectrum and
chose new excitation frequencies such that
the lines are lower in frequency than before |
|
11592
|
Sun Sep 13 13:26:00 2015 |
rana | Update | IOO | Last Wiener MCL subtractions | When making the Wiener filter OFF/ON comparisons,
we want to use the median PSD estimates,
not the mean (which is what pwelch gives |
|
11595
|
Mon Sep 14 21:42:00 2015 |
rana | Update | IOO | MC Wiener + Summary | I turned on the MCF FF in the OAF today
(we need to fix the labeling of the 'ON'
buttons on the RHS of the screen). The performance |
|
11597
|
Tue Sep 15 01:14:10 2015 |
rana | Summary | LSC | need to check LSC Whitening switch logic ... again | Tonight we noticed that the REFL_DC signal
has gone bipolar, even though the whitening
gain is 0 dB and the whitening filter is |
|
11598
|
Tue Sep 15 15:01:23 2015 |
rana | Summary | LSC | disabling the LSC AA filters + mod to whitening | While investigating the BIO situation with
the LSC machine and the iscaux2 processor
last night, we wondered if maybe the Anti-Aliasing |
|
11607
|
Wed Sep 16 23:07:06 2015 |
rana | Update | Electronics | LSC Whitening board: LP filters added, pictures taken | I added the 0.1 uF and 47 nF caps
that I mentioned so that we can now bypass
the AA filters for these channels. (mistakenly |
 |
11616
|
Fri Sep 18 08:03:53 2015 |
rana | Update | LSC | RF micky mouse - dodgy DIN connector blocks fixed | Steve and I turned on the box this morning
so that the IMC would lock again.
For future reference, remember |
|
11617
|
Fri Sep 18 08:04:09 2015 |
rana | Update | LSC | RF micky mouse - dodgy DIN connector blocks fixed | Steve and I turned on the box this morning
so that the IMC would lock again.
For future reference, remember |
|
11618
|
Fri Sep 18 09:06:26 2015 |
rana | Frogs | Computer Scripts / Programs | remote data access: volume 1, Inferno | Trying to download some data using matlab
today, I found that my ole mDV stuff doesn't
work because its MEX files were built for |
|
11622
|
Fri Sep 18 19:15:35 2015 |
rana | Update | LSC | Fast ALS troubles - Noise at 36kHz | One the Wiki (https://wiki-40m.ligo.caltech.edu/40mHomePage),
we have a Mech Resonance page for mechanical
frequencies and a PEM page where we want |
|
11623
|
Fri Sep 18 19:19:49 2015 |
rana | Frogs | Computer Scripts / Programs | remote data access: volume 1, Inferno | NDS2 restarted after hours long upgrade
process; testing has begun. Let's try
to get some long stretches of MC locked with |
|
11624
|
Mon Sep 21 00:51:36 2015 |
rana | Update | General | op340m, autoburt cron =? megatron | I modified the perl script which does our
hourly autoburt so that it can run on megatron
instead of op340m (old Solaris machine). |
|
11631
|
Tue Sep 22 02:11:17 2015 |
rana | Summary | Computer Scripts / Programs | Frequency counting algorithm | I was going to suggest using a software
PLL, but perhaps averaging gives the same
result. The same ADC signal can be fed to |
|
11646
|
Fri Sep 25 19:06:13 2015 |
rana | Update | SUS | ETMX IS drifting | I don't see any evidence of it getting
more stable. It seems there was a big step
in January, but the problem we were talking |
|
11649
|
Tue Sep 29 18:03:11 2015 |
rana | Update | LSC | use LISO | Use LISO - see what it tells you. I would
think that you should make a differential
RC filter to get the right behavior. (e.g. |
|
11675
|
Thu Oct 8 21:35:49 2015 |
rana | Update | LSC | DRFPMI Progress | Give us a lockloss or other kind of time
series plot so we can bask in the glory. |
|
11688
|
Wed Oct 14 15:59:06 2015 |
rana | Update | Computer Scripts / Programs | nodus web apache simlinks too soft | None of the links here seem to work. I
forgot what the story is with our special
apache redirect |
|
11696
|
Sat Oct 17 18:55:07 2015 |
rana | Update | LSC | DRFPMI Locked for 20 sec | in addition
to Koji's words I feel like we should |
|
11711
|
Fri Oct 23 21:58:10 2015 |
rana | Update | SUS | MC2 F2P mis-tuned | The OSEMs cannot be used for coil balancing
above ~10 Hz. The main coupling path from
OSEM drive to sensor is not through the mirror |
|
11752
|
Wed Nov 11 14:06:09 2015 |
rana | Update | SUS | ETMX oplev servo disabled | How many volts does it take to pitch the
ETM by 5 urad? |
|