| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
8887
|
Mon Jul 22 03:10:41 2013 |
rana | Summary | lore | Angel of the Y End Table? | Trying to take an image or movie
of the ETMY Transmon cam, we got instead
this attached image. |
|
|
8888
|
Mon Jul 22 06:58:17 2013 |
Lisa | Summary | lore | Angel of the Y End Table? |
|
|
|
11206
|
Tue Apr 7 04:21:45 2015 |
ericq | Update | ASC | Angular Control during Locking | [J, Q]
Alignment is making it tough for
locks to last more than 10 minutes. Many |
|
|
16125
|
Thu May 6 16:13:39 2021 |
Anchal | Summary | IMC | Angular actuation calibration for IMC mirrors | Here's my first attempt at doing angular
actuation calibration for IMC mirrors using
the method descibed in /users/OLD/kakeru/oplev_calibration/oplev.pdf |
|
|
8489
|
Thu Apr 25 03:35:28 2013 |
Jenne | Update | Locking | Angular motion does not explain RIN | Den made a nice elog about the PRMI RIN
that we see a few weeks ago: 8464.
The RIN that we're seeing is typically about |
|
|
890
|
Wed Aug 27 10:55:35 2008 |
Yoichi | HowTo | Computers | Annoying behavior of the touch pads of the lab. laptops is fixed | I was sick of the stupid touch pad behavior
of the lab. laptops, i.e. firefox goes back
and forth in the history when the cursor |
|
|
13919
|
Wed Jun 6 10:44:52 2018 |
gautam | Update | VAC | Annulus pressure channels added to frames | [steve,
gautam]
We added the following channels |
|
|
11477
|
Mon Aug 3 18:19:09 2015 |
Jessica | Update | General | Anodization of front panels accounted for | Previously, I had gotten the same results
for the conductive and the isolated front
panels. Today, I sanded off the anodized |
|
|
17338
|
Tue Dec 6 09:39:22 2022 |
yehonathan | Update | CDS | Another CDS crash | Around 9:30 we noticed IMC going out of
lock with MC1 swinging hard. It seems like
the coil output shut down. |
|
|
17373
|
Wed Dec 28 19:50:06 2022 |
Paco | Update | CDS | Another CDS crash -- restored by model restart | Stopped by lab today. Found all suspensions
undamped (even though watchdogs never tripped),
same symptom as CDS crash from earlier this |
|
|
14768
|
Wed Jul 17 20:12:26 2019 |
Kruthi | Update | Cameras | Another GigE in place of analog camera | I've taken the MC2 analog |
|
|
14727
|
Fri Jul 5 20:57:04 2019 |
Koji | Update | SUS | Another M7.1 EQ | [Kruthi, Koji]
Koji came to the lab to align the
IMC/IFO, but found the mirrors are dancing |
|
|
14728
|
Fri Jul 5 21:53:10 2019 |
Koji | Update | SUS | Another M7.1 EQ | - ITM
unstuck now
- IMC briefly locked at TEM00 |
|
|
14729
|
Fri Jul 5 22:21:13 2019 |
Koji | Update | SUS | Another M7.1 EQ | In fact, ETMX was not stuck until the M7.1
EQ today. After that it got stuck, but during
the after shocks, all the OSEMs occasionally |
|
|
584
|
Fri Jun 27 18:03:46 2008 |
Jenne | Update | Electronics | Another bad cable in the MC servo | Eric was helping me to measure the response
of the LO input on the MC's Demod board,
and when we disconnected the end of the cable |
|
|
7114
|
Wed Aug 8 10:15:13 2012 |
jamie | Update | Environment | Another earthquake, optics damped | There were another couple of earthquakes
at about 9:30am and 9:50am local.
|
|
|
14135
|
Sun Aug 5 15:43:50 2018 |
gautam | Update | SUS | Another low noise bias path idea | OK, how about this:
Attachment |
|
|
14147
|
Wed Aug 8 23:06:59 2018 |
gautam | Update | SUS | Another low noise bias path idea | Today while Rich Abbott was here, Koji
and I had a brief discussion with him about
the HV amplifier idea for the coil driver |
|
|
14165
|
Wed Aug 15 19:18:07 2018 |
gautam | Update | SUS | Another low noise bias path idea | I took another pass at this. Here is what
I have now:
Attachment |
|
|
14169
|
Thu Aug 16 23:06:50 2018 |
gautam | Update | SUS | Another low noise bias path idea | I had a very fruitful discussion with Rich
about this circuit today. He agreed
with the overall architecture, but made the |
|
|
6454
|
Tue Mar 27 17:38:03 2012 |
Jenne | Update | IOO | Another possibility / thought | I'm meditating over the mode matching from
the mode cleaner to the ITMs, and I had another
thought: |
|
|
6455
|
Tue Mar 27 17:52:08 2012 |
Koji | Update | IOO | Another possibility / thought | It is quite likely that we touched the
Faraday in Nov 2010.
In this entry http://nodus.ligo.caltech.edu:8080/40m/3874 |
|
|
6132
|
Sun Dec 18 16:16:55 2011 |
kiwamu | Update | SUS | Another trial of Hysteresis test | Koji has modified the script for the hysteresis
measurement.
A |
|
|
6134
|
Sun Dec 18 19:56:00 2011 |
kiwamu | Update | SUS | Another trial of Hysteresis test | The measurement finished at ~ 21:50
PT.
|
|
|
218
|
Sun Dec 30 02:36:35 2007 |
pkp | Update | General | Another update | So I followed suggestions 1 and 3 so far and
have started writing up what all needs to
be done in order to compile and use the camera. |
|
|
10003
|
Thu May 29 08:43:34 2014 |
manasa | Update | PEM | Ant season already in | Ant season has set in. I spotted and killed
a few ants around the optics |
|
|
12203
|
Mon Jun 20 16:33:09 2016 |
Varun | Update | Electronics | Anti-Aliasing Filter circuit schematic | Summary: The aim is to
design an analog anti-aliasing (AA) filter
placed before the ADC, whose function is |
8x |
|
12212
|
Wed Jun 22 14:03:42 2016 |
Varun | Update | Electronics | Anti-Aliasing Filter circuit schematic | I found an anti-aliasing circuit on the
40m wiki. It consists of A differential LPF
made using THS4131 low noise differential |
|
|
12164
|
Thu Jun 9 19:08:58 2016 |
Varun | Update | Electronics | Anti-Aliasing Filter update | Eric gave me a psd plot of a signal which
would be the input of a channel of the AA
filter. the Nyquist freq. is about 32.8kHz. |
|
|
10732
|
Fri Nov 21 18:23:01 2014 |
diego | Update | SUS | Anti-Jitter Telescope for OpLevs | EDIT: some images look
bad on the elog, and the notebook is parsed, |
14x |
|
10733
|
Mon Nov 24 20:24:29 2014 |
diego | Update | SUS | Anti-Jitter Telescope for OpLevs | I stared a bit longer at the plots and
thanks to Eric's feedback I noticed I payed
too much attention to the comparison between |
6x |
|
12242
|
Tue Jul 5 14:12:56 2016 |
varun | Update | Electronics | Antialiasing Filter Update | I am trying to design an antialiasing filter,
which also has two switchable whitening stages.
I have designed a first version of a PCB |
|
|
12286
|
Sun Jul 10 18:20:39 2016 |
rana | Update | Electronics | Antialiasing Filter Update | Comments on the schematic:
Only the instrumentation
amp should be made up of the ADA4004. Not |
|
|
2108
|
Sun Oct 18 15:46:08 2009 |
Alberto | Configuration | General | Antique, unused QPD removed from the AS table | Inspecting the AS table to make an inventory
of the photodiodes in use around the interferometer,
I found a mysterious photodetector hiding |
|
|
10312
|
Thu Jul 31 21:59:25 2014 |
Koji | Bureaucracy | General | Ants | Don't leave your
food on tables and desks!
Also I put the souvenir chocolates |
|
|
262
|
Thu Jan 24 22:52:18 2008 |
Andrey | Bureaucracy | General | Ants around a dirty glass (David - please read!) |
Dear coleagues,
|
|
|
2408
|
Mon Dec 14 00:37:28 2009 |
Koji | Omnistructure | Environment | Ants in the coffee maker | I made a short stop at the 40m on Sunday
night and found that hundreds ants are in |
|
|
2409
|
Mon Dec 14 11:21:23 2009 |
steve | Omnistructure | Environment | Ants in the coffee maker |
We still had some ants visiting
the sink area this morning. These ants seem |
|
|
11441
|
Thu Jul 23 20:57:15 2015 |
Jessica | Summary | General | Applying Pre-filter to data before IIR Wiener Filtering | I updated my bandpass filter and have |
|
|
520
|
Thu Jun 5 10:46:26 2008 |
josephb | Configuration | Cameras | Approximately uniform reflected white light | In an attempt to investigate the structures
seen in previous images for the GC750, I
aimed it at a relatively clean section of |
|
|
3619
|
Wed Sep 29 11:18:36 2010 |
josephb | Update | CDS | Apps code changes | After asking Alex specifically what he
did yesterday after I left, he indicated
he copied a bunch of stuff from Hanford, |
|
|
1586
|
Thu May 14 15:28:28 2009 |
steve | Summary | SUS | April 24 earthquake effect on MC2 | [quote][quote]The MC side problem could also
be the side tramp unit problem. Set the tramp
to 0 and see if that helps.[/quote]
|
|
|
6550
|
Thu Apr 19 16:21:04 2012 |
Zach | Update | Computer Scripts / Programs | Arbcav updated, made badass | I have modified Arbcav to be way cooler |
6x |
|
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 |
|
|
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 |
|
|
8467
|
Fri Apr 19 16:58:59 2013 |
Jenne | Update | ASC | Arm A2L measurement scripts 90% working again | After Den's work with the ASS model this
week, all of the channel names were changed
(this wasn't pointed out in his elog....grrr), |
|
|
10975
|
Wed Feb 4 19:21:37 2015 |
Koji | Update | ASC | Arm ASS servos now have triggered gain with arm lock status | We had persistent frustration by occasional
unlock during ASSing.
Today, I added triggers to the servo |
|
|
2174
|
Wed Nov 4 16:49:32 2009 |
Alberto | Update | LSC | Arm Cavity Finesse Measurement | I'm going to work on the X arm to measure
the arm cavity finesse.
The idea is to measure the cavity |
|
|
2175
|
Wed Nov 4 18:35:19 2009 |
Alberto | Update | LSC | Arm Cavity Finesse Measurement |
|
|
|
2176
|
Wed Nov 4 21:46:18 2009 |
Alberto | Update | LSC | Arm Cavity Finesse Measurement |
|
|