| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
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 |
|
|
8176
|
Wed Feb 27 00:56:01 2013 |
Jenne | Update | ASS | Motivation for reactivating the ASS | I am putting a little bit of brain power
into reviving the ASS, and I want to write
down what the motivation is, and what the |
|
|
8178
|
Wed Feb 27 02:21:55 2013 |
Jenne | Update | ASS | Motivation for reactivating the ASS | I have modified the MeasureSpotPositions.py
script to accept the arms as valid cavities
(it used to give an error "Sorry, this |
|
|
8204
|
Fri Mar 1 02:49:34 2013 |
Jenne | Update | ASS | Arm A2L measurement | I haven't finished debugging the scripts
so that the measurement is fully automatic,
like the MC, but I did measure the arm spot |
|
|
8205
|
Fri Mar 1 08:19:40 2013 |
Steve | Update | ASS | drift | Early morning drift in pitch. This
plot is meaningless because there is no real
light on IP-Ang |
|
|
8216
|
Mon Mar 4 09:51:26 2013 |
Steve | Update | ASS | IP-ANG is still not real | IP-ANG is coming out of ETMY
without clipping. The beam is very high on
the pick off mirror at the end table but |
|
|
8229
|
Tue Mar 5 01:43:04 2013 |
Jenne | Update | ASS | Arm A2L measurement script finished | In either .../scripts/XARM or ...../scripts/YARM
run either A2L_XARM or A2L_YARM.
The wrapper script will, like the |
|
|
8494
|
Thu Apr 25 20:48:48 2013 |
Koji | Update | ASS | Den fixed the Yarm ASS scripts | I contacted Den about malfunctioning of
the Yarm ASS.
He found the scripts were modified |
|
|
8525
|
Fri May 3 01:24:25 2013 |
Koji | Update | ASS | Den fixed the Yarm ASS scripts | Output matrices are added to ASS. Currently
ASS is based on the mirror bases.
I prefer to have the actuator bases |
|
|
8552
|
Wed May 8 18:33:02 2013 |
Koji | Update | ASS | YARM ASS - faster and more precise convergence | Precise arm alignment is more demanded.
as the PRMI locking requires good and reliable
alignment of the ITMs. |
|
|
8554
|
Wed May 8 22:36:42 2013 |
Koji | Update | ASS | XARM ASS (YARM ASS - faster and more precise convergence) | Same ASS setup for the X arm has been
done.
Now |
|
|
9018
|
Fri Aug 16 13:25:50 2013 |
Koji | Update | ASS | ASX model/screen cleaning up | [Koji Manasa]
Yesterday we cleaned up the ASX model
and screens to have more straight forward |
|
|
11846
|
Fri Dec 4 10:18:33 2015 |
yutaro | Update | ASS | Offset in the dither loop of XARM vs beam spot shift on ETMX | As I did for YARM (elog
11779), I measured the relation between
offsets added just after the demodulation |
|
|
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 |
|
|
13032
|
Fri Jun 2 00:54:08 2017 |
Koji | Update | ASS | Xarm ASS restoration work | While Gautam is working the restoration
of Yarm ASS, I worked on Xarm.
Basically, I have changed the oscillator |
7x |
|
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 |
|
|
13048
|
Wed Jun 7 14:11:49 2017 |
gautam | Update | ASS | Y-arm coil driver electronics investigation | Rana suggested taking a look at the Y-arm
test mass actuator TFs (measured by driving
the coils one at a time, with only local |
|
|
13051
|
Wed Jun 7 17:45:11 2017 |
gautam | Update | ASS | Y-arm coil driver electronics investigation | I repeated the test of driving C1:SUS-<Optic>_<coil>_EXC
individually and measuring |
|
|
13052
|
Thu Jun 8 02:11:28 2017 |
gautam | Update | ASS | Y-arm coil driver electronics investigation |
p.p1
{margin: 0.0px 0.0px 0.0px 0.0px; font: 18.0px
'Helvetica Neue'; -webkit-text-stroke: #000000}
p.p3 |
|
|
13060
|
Mon Jun 12 17:42:39 2017 |
gautam | Update | ASS | ETMY Oplev Pentek board pulled out | As part of my Oplev servo investigations,
I have pulled out the Pentek Generic Whitening
board (D020432) from the Y-end electronics |
|
|
13063
|
Wed Jun 14 18:15:06 2017 |
gautam | Update | ASS | ETMY Oplev restored | I
replaced the Pentek Generic Whitening Board
and the Optical Lever PD Interface Board |
|
|
13064
|
Thu Jun 15 01:56:50 2017 |
gautam | Update | ASS | ETMY Oplev restored | Summary:
I tried playing around with |
|
|
13470
|
Fri Dec 8 23:31:31 2017 |
johannes | Frogs | ASS | c1ass slow channel offloading scripts with small | While staring at epics records all day
I noticed something about the PIT/YAW offset
sliders and ASS offset offloading to slow |
|
|
13471
|
Wed Dec 13 09:49:23 2017 |
johannes | Update | ASS | wiring diagram | I attached a wiring schematic from the
slow DAQ to the eurocrate modules. Of these,
pins 1-32 (or 1A-16C) and pins 33-64 (17A-32C) |
|
|
13473
|
Thu Dec 14 00:32:56 2017 |
johannes | Update | ASS | Acromag new crate; c1auxex2 configured as gateway server for acromag | This splicing in of fast binary channels
we discussed at yesterday's and today's
meetings is getting messy with the current |
|
|
13476
|
Thu Dec 14 19:33:20 2017 |
gautam | Frogs | ASS | c1ass slow channel offloading scripts with small | I
don't think this is really a problem |
|
|
14093
|
Fri Jul 20 22:53:15 2018 |
Koji | Update | ASS | Attempt to resurrect Yarm ASS | [Koji Gautam]
We managed to realize stable
ASS configuration for Yarm. The transmission |
|
|
14132
|
Fri Aug 3 19:02:11 2018 |
gautam | Update | ASS | X arm ASS recovery | [koji,
gautam]
After I effected the series resistance |
|
|
14161
|
Tue Aug 14 00:50:32 2018 |
gautam | Update | ASS | X arm ASS still not quite right? | While working on the single arm alignment,
I noticed that today, i was able to get the
X arm transmission back to ~1.22, and the |
|
|
14466
|
Tue Feb 19 22:52:17 2019 |
gautam | Update | ASS | Y arm clipping doubtful | In an earlier
elog, I had claimed that the suspected
clipping of the cavity axis in the Y arm |
|
|
14614
|
Thu May 16 22:58:25 2019 |
gautam | Update | ASS | In air ASS test with green? | We were wondering yesterday if we can somehow
test the ASS system in air. Though the arm
cavity can be locked with the low power IMC |
|
|
14766
|
Wed Jul 17 03:05:01 2019 |
Kruthi | Update | ASS | MC spot position measurement scripts | [Kruthi, Gautam, Rana]
Gautam installed Atom text editor on Pianosa
yesterday. |
|
|
16282
|
Wed Aug 18 20:30:12 2021 |
Anchal | Update | ASS | Fixed runASS scripts | Late elog:
Original time of work Tue Aug 17 20:30 2021
I locked the arms yesterday |
|
|
17140
|
Thu Sep 15 11:13:32 2022 |
Anchal | Summary | ASS | YARM and XARM ASS restored | With limited proof of working for a few
times (but robustly), I'm happy to report
that ASS on YARM and XARM is working now. |
|
|
17166
|
Fri Sep 30 18:30:12 2022 |
Anchal | Update | ASS | Model Changes | I updated c1ass model today to use PR2
PR3 instead of TT1 TT2 for YARM ASS. This
required changes in c1su2 too. I have split |
|
|
17185
|
Wed Oct 12 14:01:23 2022 |
Radhika | Update | ASS | Model Changes | [Anchal, Radhika]
We proceeded with the TODO items
from [17166]. |
|
|
17186
|
Wed Oct 12 18:18:16 2022 |
rana | Update | ASS | Model Changes | Although we've usually used this empirical
way to run the alignment, I'd prefer
if we had an analytic / numerical model for |
|
|
17805
|
Wed Aug 23 16:52:52 2023 |
Paco, Radhika, Murtaza | Update | ASS | Reducing XARM-ASS Errors | We're trying to reduce the demodulated
error signals after running the ASS script
for the XARM. |
|
|
17820
|
Fri Sep 1 18:06:35 2023 |
Paco, Radhika, Murtaza | Update | ASS | Reducing XARM-ASS Errors | [Radhika, Murtaza]
XARM ASS
We |
|
|
17825
|
Tue Sep 5 11:04:33 2023 |
rana | Update | ASS | Reducing XARM-ASS Errors | I recommend usinng the DC offset method
that Koji and I used for measuring the IMC
WFS sensing matrix (not the AC method that |
|
|
17828
|
Wed Sep 6 12:53:11 2023 |
Paco, Radhika, Murtaza | Update | ASS | Reducing XARM-ASS Errors | [Radhika, Murtaza]
To create the sensing matrix, we
tried the DC offset method by giving offsets |
|
|
17832
|
Thu Sep 7 18:42:02 2023 |
Paco, Radhika, Murtaza | Update | ASS | Reducing XARM-ASS Errors | [Radhika, Murtaza]
We recalculated the sensing matrix
for XARM ASS by collecting each sensor's |
|
|
17835
|
Sat Sep 9 16:25:07 2023 |
Radhika | Update | ASS | Reducing XARM-ASS Errors | [Radhika, Murtaza]
This post summarizes XARM ASS efforts
from Friday 9/8 and Saturday 9/9. |
|
|
17836
|
Mon Sep 11 19:35:27 2023 |
Radhika | Update | ASS | Reducing XARM-ASS Errors | [Radhika, Murtaza, Paco]
Today we decided to take a closer
look at the demod phases of the T and L error |
|
|
2
|
Thu Oct 18 14:52:35 2007 |
rana | Routine | ASC | test | [B]test[/B]
[LINE]X-(:P;(:)) |
|
|
168
|
Wed Dec 5 18:08:36 2007 |
Andrey | Update | ASC | Optical Lever laser for ETMX is installed |
A new laser with \lambda=633nm has been intalled
and the mirror adjusted so that the signal |
|
|
253
|
Tue Jan 22 13:11:03 2008 |
tobin | Update | ASC | ETMY oplev recentered | The light wasn't even on the diode. |
|
|
469
|
Thu May 8 01:50:25 2008 |
rana | Summary | ASC | Arm Cavity HOM Resonances | Nothing new, but I calculated the frequencies
of the first 22 higher order transverse modes
and thought I might as well list them here.
|
|
|
1178
|
Fri Dec 5 01:58:58 2008 |
Yoichi | Configuration | ASC | tdscntr.pl now works at 40m | Tobin gave me the perl version of tdscntr
some time ago.
Pinkesh and I modified and tested it at LHO.
|
|
|
1210
|
Thu Jan 1 00:55:39 2009 |
Yoichi | Update | ASC | Alignment scripts for Linux | A Happy New Year.
The dither alignment scripts did not run |
|