| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
6677
|
Thu May 24 16:13:05 2012 |
yuta | Update | Computers | ASS scripts on new ubuntu machines | [Den, Yuta]
Background: |
|
|
6684
|
Fri May 25 17:50:38 2012 |
Jamie | Update | Computers | ASS scripts on new ubuntu machines |
|
|
|
5817
|
Sat Nov 5 00:04:23 2011 |
kiwamu | Update | ASC | ASS scripts gone | Did
somebody delete all the scripts in /opt/rtcds/caltech/c1/scripts/ASS |
|
|
5818
|
Sat Nov 5 00:24:13 2011 |
Suresh | Update | ASC | ASS scripts gone |
|
|
|
5821
|
Sat Nov 5 14:54:59 2011 |
Koji | Update | ASC | ASS scripts gone | In any case, the daily backup of the scripts
are found in /cvs/cds/caltech/scripts_archive. |
|
|
10789
|
Fri Dec 12 04:33:49 2014 |
Jenne | Update | ASC | ASS retuned | [Rana, Jenne]
We decided that tonight was the night
for ASS tuning. |
|
|
10807
|
Wed Dec 17 01:51:44 2014 |
rana, jenne | Update | ASC | ASS retuned | Did a big reconfig to make the Y-arm work
again since it was bad again.
Undid Koji's topology |
|
|
10812
|
Wed Dec 17 19:04:12 2014 |
jenne | Update | ASC | ASS retuned | I made the Xarm follow the new (old) topology
of Length -> test masses, and Trans ->
input pointing. |
|
|
10813
|
Wed Dec 17 19:31:55 2014 |
Koji | Update | ASC | ASS retuned | I wonder what to do with the X arm.
The primary purpose of the
ASS is to align the arm (=transmission), |
|
|
10946
|
Tue Jan 27 21:33:39 2015 |
Koji | Update | ASC | ASS retuned | I checked the situation of ASS. I wanted
to know how much we are away from the maximum
transmittion. |
|
|
13033
|
Fri Jun 2 01:22:50 2017 |
gautam | Update | ASS | ASS restoration work | I started by checking if shaking an optic
in pitch really moves it in pitch - i.e.
how much PIT to YAW coupling is there. The |
|
|
9081
|
Wed Aug 28 06:26:28 2013 |
manasa | Update | Computer Scripts / Programs | ASS req and snap files edited | [From yesterday] ASS for X arm was behaving
slightly funny over the last couple of days.
ASS could not correct the BS misalignment. |
|
|
7135
|
Thu Aug 9 12:31:36 2012 |
Jenne | Update | ASS | ASS rebuilt again | I was (in between Eric's measurements) driving
the YARM ASS dithers, and noticed that instead
of driving ITMY PIT, I was driving ITMX PIT. |
|
|
8657
|
Thu May 30 11:33:26 2013 |
Jamie | Configuration | Computer Scripts / Programs | ASS medm/model changes need to be committed to SVN | There are a lot of changes to the ASS stuff
that have not been committed to the SVN:
controls@rossa:/opt/rtcds/userapps/release/isc/c1 |
|
|
12140
|
Mon May 30 18:19:50 2016 |
Johannes | Update | CDS | ASS medm screen update | I noticed that the TRY button in the ASS
main screen was linking to LSC_TRX instead
of LSC_TRY. Gautam fixed it. |
|
|
7137
|
Thu Aug 9 23:50:09 2012 |
Jenne | Update | ASS | ASS matrix measured, first ASS test | Koji pointed out that I was being silly,
and rather than actually misaligning the
optics (by, say, changing their IFO Align |
|
|
12869
|
Mon Mar 6 12:34:30 2017 |
johannes | Summary | ASS | ASS light injection scenarios | What we want from the light source for
the AS port light injection:
Frequency control for locking |
|
|
6979
|
Tue Jul 17 02:17:50 2012 |
Jenne | Update | ASC | ASS gains wrong? | I was checking on the ASS system, and I think
that the gains on some of the loops may not
be correct. An old symptom was that the commands |
|
|
10719
|
Fri Nov 14 19:28:33 2014 |
Jenne | Update | SUS | ASS gain reduced for Yarm | [Koji, Jenne]
We noticed last night that the yarm
couldn't handle the old nominal gain for |
|
|
6723
|
Thu May 31 01:20:41 2012 |
Jenne | Update | ASS | ASS filter outputs are non-zero with no input | I was looking a little at ASS, while Yuta
was doing some Green transmitted DC PD work,
and I find that the output of some filters |
|
|
740
|
Fri Jul 25 17:32:46 2008 |
Sharon | Update | | ASS computer | So, it seems a bit too complicated getting
the coefficients the way I wanted it to happen
(simulink-.ini...).
|
|
|
383
|
Sun Mar 16 17:03:32 2008 |
rob | Configuration | CDS | ASS code change |
I've updated the ass.mdl file in the directory:
|
|
|
2323
|
Tue Nov 24 18:24:54 2009 |
Sanjit | Configuration | Adaptive Filtering | ASS channels added to framebuilder |
[Sanjit, Jenne, Rob, Joe]
|
|
|
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. |
|
|
10745
|
Tue Dec 2 01:27:22 2014 |
diego | Update | ASC | ASS Scripts for arms | I updated the medm C1ASS page for the Arm
scripts:
ON : same as before |
|
|
6361
|
Tue Mar 6 00:13:20 2012 |
keiko | Update | LSC | ASI signal offset | |
|
|
10972
|
Wed Feb 4 14:30:05 2015 |
ericq | Update | LSC | ASDC Whitening Gain | At the lunch meeting, we were thinking
about the exess high frequency content of
the MICH control signal, which leads to railing |
|
|
13392
|
Wed Oct 18 17:34:09 2017 |
gautam | Update | SUS | ASDC | Summary:
The signal path for the ASDC signal
is AS55 |
|
|
11108
|
Fri Mar 6 04:49:08 2015 |
Jenne | Update | LSC | AS55Q transition | [Jenne, Ranah]
We played around tonight with different
possible ways of transitioning DARM to normalized |
|
|
11105
|
Thu Mar 5 21:42:05 2015 |
Jenne | Update | LSC | AS55Q flat at DARM zero crossing | I think we've seen this in simulations,
but it's a little disheartening to see
in real life. AS55Q looks like it flattens |
|
|
13369
|
Mon Oct 9 22:18:34 2017 |
gautam | Update | LSC | AS55Q Dark Noise | I measured the output voltage noise of
the Q output of the AS55 Demod Board with
the PSL shutter closed, using the SR785 (see |
|
|
13370
|
Tue Oct 10 22:04:06 2017 |
rana | Update | LSC | AS55Q Dark Noise | how about calibrate the DC channels so
that you can just get the acutal power levels
from the trend data? |
|
|
13372
|
Wed Oct 11 14:42:03 2017 |
gautam | Update | LSC | AS55Q Dark Noise | I keep adding traces to this plot, here
is the most complete one I have now. Looks
like the input noise to the D040179 (measured |
|
|
13374
|
Wed Oct 11 19:31:32 2017 |
gautam | Update | LSC | AS55Q Dark Noise | I tried replacing the AD797s on the daughter
board with OP27s, and saw no significant
improvement in the electronics noise of the |
|
|
13376
|
Thu Oct 12 01:50:11 2017 |
gautam | Update | LSC | AS55Q Dark Noise | I worked on the daughter board a little
more in the evening. I have somehow managed
to make the dark noise ~25% worse [Attachment |
|
|
13378
|
Thu Oct 12 12:17:28 2017 |
gautam | Update | LSC | AS55Q Dark Noise | Here is the marked up schematic with the
board as it is stuffed. Annoyingly, there
is a capacitor (C1) which according to the |
|
|
13380
|
Fri Oct 13 12:26:12 2017 |
gautam | Update | LSC | AS55Q Dark Noise | Attachment #1 -
Measured / modelled noises for AS55 demod
board. I've plotted quadrature sum of |
|
|
13382
|
Mon Oct 16 16:01:04 2017 |
gautam | Update | LSC | AS55Q Dark Noise | Koji suggested looking at the output of
the AS55 demod board on a fast oscilloscope
to look for differences in the two channel |
|
|
13384
|
Tue Oct 17 19:31:53 2017 |
gautam | Update | LSC | AS55Q Dark Noise | [Koji, gautam]
We took a closer look at the AS55
demod board today. The procedure was to just |
|
|
5463
|
Mon Sep 19 16:20:35 2011 |
kiwamu | Update | LSC | AS55 whitening gain decreased | The
gain of whitening filters on AS55 was decreased
from 21 dB to 0 dB for the Y arm locking. |
|
|
8092
|
Fri Feb 15 21:22:29 2013 |
yuta | Update | Electronics | AS55 replaced with POP55 PD | I temporarily replaced AS55 PD with PD
labeled "POP55(POY55)".
I think POP55 is working because I |
|
|
4572
|
Wed Apr 27 15:34:38 2011 |
kiwamu | Update | Electronics | AS55 demod board with new 90 deg splitter : healthy |
A new 90 deg splitter, PSCQ-2-51W, |
|
|
4395
|
Thu Mar 10 01:31:37 2011 |
Kevin | Update | Electronics | AS55 Characterizations | I measured the transfer function, shot
noise, and dark spectrum of AS55.
From the shot noise measurement, |
|
|
10105
|
Wed Jun 25 20:45:04 2014 |
Nichin | Update | Electronics | AS55 Bodeplot | [Nichin]
I |
|
|
16608
|
Thu Jan 20 18:16:29 2022 |
Anchal | Update | BHD | AS4 set to trigger free swing test | AS4 is set to go through a free swinging
test at 10 pm tonight. We have used this
script (Git/40m/scripts/SUS/InMatCalc/ |
|
|
16589
|
Fri Jan 14 17:33:10 2022 |
Yehonathan | Update | BHD | AS4 resurrection | {Yehonathan, Anchal}
Came this morning, the gluing of
the magnets was 100% successful. Side blocks, |
|
|
16590
|
Fri Jan 14 18:12:47 2022 |
Anchal | Summary | BHD | AS4 placed in ITMY Chamber, OSEMs connected | AS4 was succesfully suspended and trasported
to ITMY chamber (40m/16589).
We placed it near the door to make it easy |
|
|
16594
|
Tue Jan 18 18:19:22 2022 |
Koji | Summary | BHD | AS4 placed in ITMY Chamber, OSEMs connected | AS4 satellite amplifier D1002818
/ D080276 troubleshoot
I dug into the circuit to see what/where |
|
|
16604
|
Thu Jan 20 16:42:55 2022 |
Paco | Update | BHD | AS4 OSEMs installation - part 2 | [Paco]
Turns out, the shifting was likely
due to the table level. Because I didn't |
|
|
16596
|
Wed Jan 19 12:56:52 2022 |
Paco | Summary | BHD | AS4 OSEMs installation | [Paco, Tega, Anchal]
Today, we started work on AS4 SOS
by checking the OSEM and cable. Swapping |
|