ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
13418
|
Wed Nov 8 14:28:35 2017 |
gautam | Update | General | MC1 glitches return | There hasn't been a big glitch that
misaligns MC1 by so much that the autolocker
can't lock for at least 3 months, seems |
 |
13284
|
Fri Sep 1 08:25:08 2017 |
Steve | Update | SUS | MC1 glitching | MC1, MC2 and MC3 damping turned off to
see glitching action at 9:57am
|
 |
13286
|
Fri Sep 1 16:27:39 2017 |
gautam | Update | SUS | MC1 glitching | I re-enabled the MC SUS damping and IMC
locking for some IFO work just now.
|
|
13426
|
Tue Nov 14 08:54:37 2017 |
Steve | Update | IOO | MC1 glitching | |
|
13253
|
Fri Aug 25 11:11:26 2017 |
gautam | Update | General | MC1 kicked again | Looks like MC1 got another big kick just
under 4 hours ago. None of the other optics
show any evidence of a glitch so it seems |
|
13283
|
Thu Aug 31 21:40:24 2017 |
gautam | Update | General | MC1 kicked again | There was a pretty large glitch in MC1
about an hour ago. The misalignment was so
large that the autolocker wasn't able |
|
16159
|
Tue May 25 10:22:16 2021 |
Anchal, Paco | Summary | SUS | MC1 new input matrix calculated and uploaded | The test was succesful and brought back
the IMC to lock point at the end.
We calculated new input matrix |
|
15434
|
Sun Jun 28 15:30:52 2020 |
gautam | Update | SUS | MC1 sat-box de-lidded | Judging by the summary
pages, some 18 hours after this
change was made and the board re-installed, |
|
15435
|
Sun Jun 28 16:29:58 2020 |
rana | Update | SUS | MC1 sat-box de-lidded | does the FLIR have an option to export
image with a colorbar?
How about just leave the lid open? |
|
15436
|
Sun Jun 28 17:36:35 2020 |
gautam | Update | SUS | MC1 sat-box de-lidded | Hmm I can't seem to export with the
colorbar, might be just my phone though.
I tried to add some "cursors" with |
|
15438
|
Mon Jun 29 11:55:46 2020 |
gautam | Update | SUS | MC1 sat-box de-lidded | There was no improvement to the situation
overnight. So, I did the following today:
Ramped bias voltages for |
|
15440
|
Mon Jun 29 20:30:53 2020 |
Koji | Update | SUS | MC1 sat-box de-lidded | Sigh. Do we have a spare sat box? |
|
15712
|
Mon Dec 7 11:25:31 2020 |
gautam | Update | SUS | MC1 suspension glitchy again | The MC1 suspension has begun to show
evidence of glitches again, from Friday/Saturday.
You can look at the suspension Vmon tab a |
|
16138
|
Thu May 13 11:55:04 2021 |
Anchal, Paco | Update | SUS | MC1 suspension misbehaving | We came in the morning with the following
scene on the zita monitor:
|
 |
14836
|
Thu Aug 8 12:01:12 2019 |
gautam | Update | IOO | MC1 suspension oddness | At ~1am PDT today, all the MC1 shadow sensor
readbacks (fast CDS channels and Slow Acromag
channels, latter not shown here) went to |
 |
14842
|
Mon Aug 12 19:58:23 2019 |
gautam | Update | IOO | MC1 suspension oddness | Repair plan:
Get "spare" satellite
box working --- Chub
According |
|
2011
|
Mon Sep 28 02:24:05 2009 |
rana | Update | Locking | MC1/3 Dewhitening found OFF: Turned back ON | While trying to make the OAF work, I found
that the XYCOM switches for MC1/3 have been
set in the bad way for awhile. This means |
 |
9521
|
Mon Jan 6 18:32:17 2014 |
RANA | Update | IOO | MC1/3 kicked this morning at 8:30 | The trend shows a big jolt to the
MC1/3 pointing this morning at 8:30.
Was anyone working |
|
9522
|
Mon Jan 6 20:52:09 2014 |
Jenne | Update | IOO | MC1/3 kicked this morning at 8:30 | When I got in this morning at 9-something
(9:45 maybe?), Steve was taking dust photos
on the AS table, of the MC Refl path. |
|
5932
|
Thu Nov 17 22:24:19 2011 |
Den | Update | Adaptive Filtering | MC1_COIL | Analyzing coherence between MC length and
signals on MC1, MC2 and MC3 coils we have
noticed that MC1 COIL signal is not coherent |
  |
5934
|
Thu Nov 17 23:44:48 2011 |
Den | Update | IOO | MC1_SENSOR | We've found that one of the MC1_SENSORS
does not work properly.
See the figure. |
|
5935
|
Thu Nov 17 23:47:43 2011 |
Den | Update | IOO | MC1_SENSOR | The most interesting plot did not uploaded
in the previous elog.
Upload now local MC1_SENSOR signals. |
|
7453
|
Mon Oct 1 07:25:48 2012 |
Steve | Update | SUS | MC2 & ETMX sus damping restored | |
|
11447
|
Mon Jul 27 16:47:53 2015 |
ericq | Update | IOO | MC2 -> MCL Actuator TF | Our noise cancellation SURFS will be doing
online subtraction on the mode cleaner length,
among other things. |
 |
11539
|
Fri Aug 28 20:15:49 2015 |
rana | Update | IOO | MC2 -> MCL Actuator TF |
|
|
11548
|
Mon Aug 31 07:49:11 2015 |
ericq | Update | IOO | MC2 -> MCL Actuator TF |
|
|
11462
|
Thu Jul 30 02:06:20 2015 |
Ignacio | Update | IOO | MC2 <-> MCL Actuator TF fitted | Eric downloaded MC2 to MCL transfer function
data (H) as well as its inverse, MCL to MC2
(Hinv). He also downloaded new MCL and MC2 |
   |
12996
|
Wed May 17 11:10:31 2017 |
Steve | Update | Cameras | MC2 CCD video camera back in place | Olympus camera is removed and our old CCD
camera is back to monitor the face of MC2
|
|
15048
|
Tue Nov 26 13:33:33 2019 |
Yehonathan | Update | Cameras | MC2 Camera rotated by 90 degrees | MC2 analog camera was rotated by 90 degrees.
Orientation correctness was verified by exciting
the MC2 Yaw degree of freedom. |
 |
15982
|
Wed Mar 31 22:58:32 2021 |
Anchal, Paco | Update | SUS | MC2 Coil Balancing Test | A cross-coupling test has been set to trigger
at 05:00 am on April 1st, 2021. The script
is waiting on tmux session 'cB' on |
|
15984
|
Thu Apr 1 13:56:49 2021 |
Anchal, Paco | Update | SUS | MC2 Coil Balancing Test Results | The coil balancing attempt failed. The
off-diagonal values in the measured sensing
matrices either remained the same or increased. |
  |
15985
|
Thu Apr 1 18:01:06 2021 |
Anchal, Paco | Update | SUS | MC2 Coil Balancing Test Results Success?? | After fixing a few things we felt were
wrong in our implementation of the algorithm,
we ran the coil balancing for 12 iterations |
  |
15987
|
Thu Apr 1 18:48:45 2021 |
gautam | Update | SUS | MC2 Coil Balancing Test Results Success?? | In these results, can you also include
the new matrix and what the relative imbalances
were? |
|
15961
|
Thu Mar 25 11:46:31 2021 |
Paco, Anchal | Update | SUS | MC2 Coil Balancing updates | Proof-of-principle
We
excited PIT and YAW dofs using LOCKIN1 in
MC2 on Monday.
We |
   |
15970
|
Fri Mar 26 11:54:37 2021 |
Paco, Anchal | Update | SUS | MC2 Coil Balancing updates | [Paco, Anchal]
Today
we spent the morning testing the scripts |
|
15972
|
Mon Mar 29 10:44:51 2021 |
Paco, Anchal | Update | SUS | MC2 Coil Balancing updates | We ran the coil balancing procedure 4 times
while iterating through the output matrix
optimization. |
 |
15974
|
Mon Mar 29 17:11:54 2021 |
gautam | Update | SUS | MC2 Coil Balancing updates | For this technique to work, (i) the WFS
loops must be well tuned and (ii) the beam
must be well centered on MC2. I am reasonably |
|
15975
|
Mon Mar 29 17:34:52 2021 |
rana | Update | SUS | MC2 Coil Balancing updates | I think there's been some mis-communication.
There's no updated Hang procedure, but
there is the one that Anchal, Paco and I |
|
16063
|
Wed Apr 21 11:38:27 2021 |
Anchal, Paco | Update | SUS | MC2 Damping Gains Optimized | We did a step response test with MC2 Suspensoin
Damping Gains and optimized them to get <5
oscillations in ringdown. |
 |
16086
|
Mon Apr 26 18:55:39 2021 |
Anchal, Paco | Update | SUS | MC2 F2A Filters Tested | Today we tested the F2A filters created
from the DC gain values listed in 16066.
Filters:
For |
  |
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 |
|
11716
|
Tue Oct 27 03:46:26 2015 |
ericq | Update | SUS | MC2 F2P mis-tuned | D'oh. Good point.
Reverted for now; I'm thinking
about doing laser pointer->MC2 QPD... |
|
11702
|
Tue Oct 20 15:51:44 2015 |
ericq | Update | SUS | MC2 F2P tuned | Using a modified version of Hang's
deMod_deCoup scripts, I tuned the MC2 coil
output matrix to minimize the appearance |
|
9815
|
Tue Apr 15 16:21:18 2014 |
Koji | Update | IOO | MC2 LSC offset was set to be -5000 | Yesterday, MC2 alignment was slipping all
day. Even when the WFS was off (i.e. there
wa sno actuation), I had continual misalignment |
|
5708
|
Thu Oct 20 01:40:33 2011 |
Koji | Summary | SUS | MC2 Misaligned 2:27PM on Wednesday | There looks some activity at around
MC2 on Wednesday afternoon.
It |
|
5716
|
Thu Oct 20 18:57:35 2011 |
Suresh | Summary | SUS | MC2 Misaligned 2:27PM on Wednesday |
|
|
5717
|
Fri Oct 21 02:36:44 2011 |
Suresh | Summary | SUS | MC2 Misaligned 2:27PM on Wednesday : MC Realigned |
|
|
5718
|
Fri Oct 21 02:57:38 2011 |
Suresh | Summary | SUS | MC2 Misaligned 2:27PM on Wednesday : cause traced |
|
|
5719
|
Fri Oct 21 09:08:33 2011 |
steve | Update | SUS | MC2 Misalignment | Thinks to do before the NEXT realignment:
B, tie 4 ancher bolts on table
legs to the floor |
|
17237
|
Mon Nov 7 19:53:12 2022 |
Anchal | Update | SUS | MC2 OSEMs calibrated using MC_F | MC2 OSEM outputs were calibrated today
using MC_F to get the output values in microns.
This was done using |
|