ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
8878
|
Fri Jul 19 12:00:12 2013 |
manasa | Update | Green Locking | ALS Y performance with the new whitening filter |
|
|
9904
|
Fri May 2 13:03:30 2014 |
Jenne | Update | LSC | ALS Y beat setup aligned | I touched up the alignment of the Ygreen
on the PSL table. |
|
9905
|
Fri May 2 14:31:26 2014 |
Koji | Update | LSC | ALS Y beat setup aligned | Please check the X&Y ALS out-of-loop
stability. Use fine resolution (BW0.01).
Calibrate the POX/POY in Hz. |
|
6318
|
Fri Feb 24 19:25:43 2012 |
jamie | Update | LSC | ALS X-arm beatbox added, DAQ channels wiring normalized | I have hooked the ALS beatbox into the
c1ioo DAQ. In the process, I did some
rewiring so that the channel mapping corresponds |
|
9880
|
Wed Apr 30 16:07:59 2014 |
manasa | Update | LSC | ALS X noise post servo modification | I. The Y arm stayed stable through last
night and I have saved the arm lock settings
to IFOconfigure. |
   |
9972
|
Tue May 20 02:12:35 2014 |
Jenne | Update | LSC | ALS X noise investigation | [Rana, Jenne]
We
have looked at a few things that do and don't |
 |
9983
|
Wed May 21 13:20:34 2014 |
manasa | Update | LSC | ALS X noise from angular motion of mirrors |
|
|
9988
|
Thu May 22 00:30:40 2014 |
manasa | Update | LSC | ALS X noise from angular motion of mirrors | Below are the transfer functions measured
between the angular (pit, yaw) motion of
X arm mirrors and the ALSX error signal. |
   |
9887
|
Thu May 1 00:13:21 2014 |
Koji | Update | LSC | ALS X beat setup aligned | I saw big misalignment on the GTRX camera,
I went to the PSL table and aligned the beat
beams. |
|
9624
|
Tue Feb 11 21:22:02 2014 |
manasa | Update | Green Locking | ALS X and Y arm restored | The X and
Y arms were locked successfully using ALS |
|
9625
|
Tue Feb 11 22:17:06 2014 |
Koji | Update | Green Locking | ALS X and Y arm restored | Nice restoration. We eventually want to
make transition of the servo part from ALS
to LSC model for the further handing off |
|
9721
|
Tue Mar 11 19:38:26 2014 |
manasa | Update | Green Locking | ALS Slow servo settings |
|
|
9727
|
Fri Mar 14 10:31:10 2014 |
jamie | Update | Green Locking | ALS Slow servo settings |
|
|
11891
|
Thu Dec 17 16:44:03 2015 |
gautam | Update | CDS | ALS Slow control MEDM screen updated |
|
|
16161
|
Tue May 25 17:42:11 2021 |
Anchal, Paco | Summary | ALS | ALS Single Arm Noise Budget | Here is our first attempt at a single-arm
noise budget for ALS.
Attachment 1 shows |
 |
16164
|
Thu May 27 11:03:15 2021 |
Anchal, Paco | Summary | ALS | ALS Single Arm Noise Budget | Here's an updated X ARM ALS noise budget.
Things to remember:
Major
mistake we were making earlier was that we |
 |
15211
|
Thu Feb 13 21:30:55 2020 |
shruti | Update | ALS | ALS OOL noise with arms locked | [Meenakshi, Gautam, Shruti]
Summary:
- We initially aligned the arm |
|
15213
|
Fri Feb 14 14:02:13 2020 |
shruti | Update | ALS | ALS OOL noise with arms locked | [Meenakshi, Shruti]
Even though we were not able to
lock the the IR beat (by enabling LSC) during |
  |
15214
|
Fri Feb 14 14:52:41 2020 |
gautam | Update | ALS | ALS OOL noise with arms locked | Unlikely, the alignment was probably just
not good. I restored the alignment and now
the arms can be locked to IR frequency. |
|
15216
|
Tue Feb 18 18:14:59 2020 |
shruti | Update | ALS | ALS OOL noise with arms locked | We proceeded with the trying to measure
the ALS out-of-loop noise of the X arm when
the X arm cavity is green-locked using different |
|
15217
|
Wed Feb 19 22:20:22 2020 |
rana | Update | ALS | ALS OOL noise with arms locked | Could you please put physical units on
the Y-axis and also put labels in the legend
which give a physical description of what |
|
15220
|
Fri Feb 21 20:44:18 2020 |
shruti | Update | ALS | ALS OOL noise and PDH | [Meenakshi, Shruti]
In order to adjust the relative
phase for PDH locking, we used the Siglent |
 |
15221
|
Sun Feb 23 18:15:22 2020 |
rana | Update | ALS | ALS OOL noise and PDH | to
make the comparisons meaningfully |
|
14918
|
Mon Sep 30 18:20:26 2019 |
gautam | Update | ALS | ALS OOL noise - a first look | Attachment #1 shows a
first look at the IR ALS noise after my re-coupling |
|
15157
|
Sun Jan 26 14:40:55 2020 |
gautam | Update | ALS | ALS OOL noise | In preparation for resuming IFO locking
activities, I measured the ALS noise with
the arm lengths locked to IR, AUX laser frequencies |
|
13238
|
Tue Aug 22 02:19:11 2017 |
gautam | Update | ALS | ALS OLTFs | Attachment #1 shows the
results of my measurements tonight (SR785
data in Attachment #2). |
 |
13244
|
Tue Aug 22 23:27:14 2017 |
rana | Update | ALS | ALS OLTFs | Didn't someone look at what the OLG
req. should be for these servos at some point?
I wonder if we can make a parallel digital |
|
9283
|
Thu Oct 24 19:12:45 2013 |
Masayuki | Update | Green Locking | ALS OFFSETTER calibration | I calibrated the ALS-OFFSETTER output.
I measured the FSR of cavity in unit |
|
9284
|
Thu Oct 24 21:46:18 2013 |
Koji | Update | Green Locking | ALS OFFSETTER calibration |
|
|
11046
|
Wed Feb 18 01:58:51 2015 |
ericq | Update | LSC | ALS Fool single arm performance | I'm playing around with the lastest
ALS fool feedforward on the Yarm, and I like
what I'm seeing. |
   |
11047
|
Wed Feb 18 17:51:40 2015 |
ericq | Update | LSC | ALS Fool impulse response | Koji raised a good question about the step
response I wrote about. Namely, if the UGF
of the ALS servo is around 100Hz, we would |
|
11048
|
Wed Feb 18 19:06:40 2015 |
Koji | Update | LSC | ALS Fool impulse response | |
|
11041
|
Tue Feb 17 00:24:47 2015 |
rana, jenne | Update | LSC | ALS Fool filter updated for more cancellation | Today
we measured the TFs again and then updated
the filter in the POY -> ALS FF path so |
 |
11484
|
Thu Aug 6 11:45:01 2015 |
Jessica | Update | General | ALS Delay Line front panel testing | Koji had suggested that I sync up the two
function generators to ensure that they have
the same base frequency and so that crosstalk |
   |
11471
|
Thu Jul 30 18:58:36 2015 |
Jessica | Update | General | ALS Delay Line Box Front Panel Testing | I tested both of the front panels (conductive
and isolated SMAs) with the ALS Delay Line
Box by driving extremely close frequencies |
   |
11440
|
Thu Jul 23 20:54:42 2015 |
Jessica | Update | General | ALS Delay Line Box | The front panels for the ALS delay |
|
10396
|
Thu Aug 14 22:58:59 2014 |
rana, jenne | Summary | Green Locking | ALS DIFF tuning | We've been having trouble tuning
the ALS DIFF matrix. Trying to see if the
MC2 EXC can be cancelled in ALS DARM by adjusting |
|
17374
|
Fri Dec 30 11:38:45 2022 |
Paco | Summary | Calibration | ALS Calibration errors -- single arm actuation | Here are my thoughts on calibration errors.
This applies to the single arm actuation
calibration, but may easily be extended to |
|
9872
|
Mon Apr 28 23:05:03 2014 |
Jenne | Update | LSC | ALS CARM and DARM settings | [Jenne, Koji]
The IFO is being uncooperative tonight,
and I have an early morning meeting, so I'm |
|
9702
|
Fri Mar 7 00:43:34 2014 |
manasa | Update | LSC | ALS C&D locked (on MC2 and ETMs) and IR resonance obtained | [EricQ, Manasa]
|
|
16333
|
Wed Sep 15 23:38:32 2021 |
Koji | Update | ALS | ALS ASX PZT HV was off -> restored | It was known that the Y end ALS PZTs are
not working. But Anchal reported in the meeting
that the X end PZTs are not working too. |
|
9123
|
Wed Sep 11 23:34:37 2013 |
Masayuki | Summary | Green Locking | ALS locking in both arms | [manasa, masayuki]
We locked the XARM and YARM with
using ALS control loop and |
|
9124
|
Wed Sep 11 23:43:10 2013 |
Koji | Summary | Green Locking | ALS locking in both arms | What was the beat freq for each arm?
The HF noise level depends on the
frequency of the beat note. |
|
9125
|
Thu Sep 12 00:07:26 2013 |
Masayuki | Summary | Green Locking | ALS locking in both arms |
|
|
16614
|
Mon Jan 24 12:33:41 2022 |
rana | Configuration | Wiki | AIC Wiki: txz files allowed | I updated the mime.local.conf file for
the AIC Wiki so as to allow attachments with
the .txz |
|
14227
|
Wed Oct 3 18:15:34 2018 |
yuki | Configuration | ASC | AI board improvement | [ Yuki, Gautam ]
I improved Anti-Imaging board (D000186-Rev.D),
which will be put between DAC port and |
|
14228
|
Thu Oct 4 00:44:50 2018 |
yuki | Configuration | ASC | AI board improvement | [ Yuki, Gautam ]
I made a cable which connects DAC
port (40 pins) and AI board (25 pins). I |
|
7173
|
Tue Aug 14 11:33:14 2012 |
Jamie Alex Den | Update | CDS | AI and AA filters | When signals are transmitted between the
models running at different rates, no AI
or AA filters are automatically applied. |
|
8857
|
Tue Jul 16 14:51:09 2013 |
gautam | Configuration | endtable upgrade | AI Board-D000186-Modified notches | I tried shifting the notch frequencies
on the D000186-revision D board given to
me by Koji. The existing notches were at |
|
8875
|
Thu Jul 18 21:12:58 2013 |
gautam | Configuration | endtable upgrade | AI Board-D000186-All channels modified |
I carried some further modifications
and tests to the AI Board. Details and observations |
|