| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
5905
|
Wed Nov 16 09:21:56 2011 |
Suresh | Update | IOO | MC2 Shifted in Pitch, corrected by adjusting the pitch bias | [Steve, Suresh]
Steve went over
to the MC2 walkway and |
|
|
5910
|
Wed Nov 16 10:53:35 2011 |
Suresh | Update | IOO | MC2 Shifted in Pitch, corrected by adjusting the pitch bias |
|
|
|
5913
|
Wed Nov 16 17:03:19 2011 |
Koji | Update | IOO | MC2 Shifted in Pitch, corrected by adjusting the pitch bias | MC was not locked for more than 5 hours
because of the misalignment.
Noticed that MC2 WFS feedback filters |
|
|
9884
|
Wed Apr 30 21:16:42 2014 |
rana | Update | LSC | MC2 Strad | |
|
|
16066
|
Wed Apr 21 15:50:01 2021 |
Anchal, Paco | Update | SUS | MC2 Suspension Optimization summary |
MC2
Coil Balancing DC and AC Gains
|
|
|
16067
|
Wed Apr 21 18:49:29 2021 |
rana | Update | SUS | MC2 Suspension Optimization summary | the
POS column should be all 1 for the AC balancing. |
|
|
16071
|
Thu Apr 22 08:50:21 2021 |
Anchal | Update | SUS | MC2 Suspension Optimization summary | Yes, during the AC balancing, POS column
was set to all 1. This table shows the final
values after all the steps. The first 3 columns |
|
|
5635
|
Fri Oct 7 22:48:26 2011 |
Suresh | Update | IOO | MC2 Trans QPD spot size and incident power decreased | After centering the spot on the MC2, I
started to adjust the spot position on MC_TRANS_QPD
to center the beam on it. I noticed |
|
|
13705
|
Mon Mar 26 21:25:55 2018 |
rana | Summary | IOO | MC2 Trans table has issues | Gautam, Rana
While at the MC2 table, we noticed
that it has some optical problems: |
|
|
674
|
Tue Jul 15 12:23:22 2008 |
Jenne | Update | General | MC2 Watchdog tripped | Alberto, Jenne
Mode Cleaner was unlocked. We checked, and |
|
|
2208
|
Mon Nov 9 11:11:19 2009 |
Alberto | Configuration | LSC | MC2 Watchdogs tripped | The MC2 watchdogs tripped. I just restored
them.
I also had to relock the MZ and then |
|
|
2123
|
Tue Oct 20 02:14:29 2009 |
rob | Update | IOO | MC2 alignment bias changed | the mode cleaner was having trouble locking
in a 00 mode, needing several tries.
I changed the MC2 coil biases, and it seems |
|
|
16163
|
Wed May 26 11:45:57 2021 |
Anchal, Paco | Configuration | IMC | MC2 analog camera | [Anchal, Paco]
We went near the MC2 area and opened
the lid to inspect the GigE and analog video |
|
|
14774
|
Thu Jul 18 22:03:00 2019 |
Kruthi | Update | Cameras | MC2 and cameras | [Kruthi, Yehonathan, Gautam]
Today evening, Yehonathan and I
aligned the MC2 cameras. As of now there |
|
|
4674
|
Tue May 10 00:44:52 2011 |
valera | Update | IOO | MC2 centering | Kiwamu, Koji, Valera
We centered the beam on MC2 in pitch
by moving the MC1,2,3 in the following combination |
|
|
5782
|
Wed Nov 2 10:04:05 2011 |
steve | Update | SUS | MC2 chamber anchoring tightened |
|
|
|
13706
|
Mon Mar 26 21:40:26 2018 |
gautam | Summary | IOO | MC2 classical radiation pressure noise | [rana, gautam]
we measured the RIN of the MC2
transmission using the PDA255 I had put on |
|
|
16055
|
Tue Apr 20 18:19:30 2021 |
Anchal | Update | SUS | MC2 coil balanced at DC | Following up from morning's work, I
balanced the coils at DC as well. Attachment
1 is screenshot of striptool in which blue |
|
|
15224
|
Tue Feb 25 19:58:06 2020 |
Hang | Update | IOO | MC2 coil balancing | [Yehonathan, Hang]
We did some quick DC balancing
of the MC2 coil drivers to reduce the l2a |
|
|
15265
|
Wed Mar 11 16:46:25 2020 |
Hang | Update | IOO | MC2 coil balancing | My old scheme was flawed as I used pitch
as the readback. The pitch signal could not
distinguish the cross-coupling due to coil |
|
|
15468
|
Fri Jul 10 15:26:28 2020 |
gautam | Update | LSC | MC2 coils need DC balancing? | I was looking at some signals from last
night, see Attachment |
|
|
15470
|
Sat Jul 11 18:24:30 2020 |
Koji | Update | LSC | MC2 coils need DC balancing? | > Can't
we offload this DC signal to the laser crystal |
|
|
15474
|
Mon Jul 13 11:36:08 2020 |
rana | Update | LSC | MC2 coils need DC balancing? |
if IMC REFL is not increasing,
I don't think its a mis-alignment. Usually,
REFL is a more sensitive indicator of alignment |
|
|
996
|
Fri Sep 26 09:05:47 2008 |
steve | Update | SUS | MC2 damping restored | The MC2 sus damping was restored. |
|
|
1300
|
Fri Feb 13 08:38:03 2009 |
steve | Update | IOO | MC2 damping restored | |
|
|
2207
|
Mon Nov 9 08:43:16 2009 |
steve | Update | SUS | MC2 damping restored | MC2 damping restored, MZ locked and
the arms are flashing now. |
|
|
7268
|
Fri Aug 24 09:21:45 2012 |
Steve | Update | IOO | MC2 damping restored |
|
|
|
1607
|
Tue May 19 15:57:07 2009 |
steve | Update | IOO | MC2 damping restored after EQ | Earthquake mag 4.0 at Lennox, Ca
trips MC2 watchdogs
http://quake.usgs.gov/recenteqs/Quakes/ci10411545.html |
|
|
2033
|
Thu Oct 1 10:23:00 2009 |
steve | Update | PSL | MC2 damping restored again | The EQ did not change the input beam
pointing. All back to normal, except MC2
wachdogs tripped again. |
|
|
2034
|
Thu Oct 1 11:39:47 2009 |
Jenne | Update | SUS | MC2 damping restored again |
|
|
|
13174
|
Wed Aug 9 11:33:49 2017 |
gautam | Update | Electronics | MC2 de-whitening | Summary:
The analog de-whitening filters
for MC2 are different from those on the other |
|
|
4146
|
Wed Jan 12 22:33:24 2011 |
kiwamu | Update | CDS | MC2 dewhitening are healthy except for UR | I briefly
checked the MC2 analog dewhitening filters.
It |
|
|
7276
|
Sun Aug 26 11:53:09 2012 |
Jenne | Update | IOO | MC2 getting kicked up regularly | We need to re-look at this new MC autolocker
stuff, and the new MCL filters.
MC2 is getting kicked up (sometimes |
|
|
5862
|
Thu Nov 10 12:28:31 2011 |
Jenne | Update | SUS | MC2 is being a little wild...WFS to blame | Mirko and Den are measuring MC_F,
which they will report about later, but I
noticed that MC2 is totally crazy right now. |
|
|
5877
|
Fri Nov 11 21:09:30 2011 |
Suresh | Update | SUS | MC2 is being a little wild...WFS to blame |
|
|
|
1002
|
Fri Sep 26 19:18:39 2008 |
Jenne | Update | IOO | MC2 is having a bad day | As Steve mentioned earlier in today's elog,
MC2 keeps ringing up for no clear reason.
It is definitely only MC2 that is ringing |
|
|
2457
|
Mon Dec 28 12:35:57 2009 |
Jenne | Update | SUS | MC2 is having a bad day | MC2 is having a bad day, and I'm not yet
sure why. It's to do with the damping
though. When the damping is off, after |
|
|
2458
|
Mon Dec 28 12:45:55 2009 |
Koji | Update | SUS | MC2 is having a bad day | The MCL path of MC2 was in a strange state
as the filters were activated as if it is
in lock even though we had no lock. So I |
|
|
14788
|
Sun Jul 21 02:07:04 2019 |
Kruthi | Update | Loss Measurement | MC2 loss map | I'm running the MC2 loss map scripts
on pianosa now. The camera server is throwing
an error and is not grabbing snapshots :( |
|
|
14789
|
Sun Jul 21 12:54:18 2019 |
gautam | Update | Loss Measurement | MC2 loss map | Can you please be more specific about what
the error is? Is this the usual instability
with the camera server code? Or was it something |
|
|
14791
|
Sun Jul 21 17:17:03 2019 |
Kruthi | Update | Loss Measurement | MC2 loss map | The camera server keeps throwing the error:
failed to grab frames. Milind suggested that
it might a problem with the ethernet cable, |
|
|
14792
|
Sun Jul 21 19:27:25 2019 |
Milind | Update | Loss Measurement | MC2 loss map | I think ezca.Ezca().write() takes the string
"CAM-ETMX_SNAP" as an argument
and not C1:CAM-ETMX_SNAP. See this, |
|
|
14796
|
Mon Jul 22 12:57:35 2019 |
Kruthi | Update | Loss Measurement | MC2 loss map | In my script I have used "CAM-ETMX_SNAP"
only; while entering it in the elog
I made a mistake, my bad! |
|
|
9759
|
Fri Mar 28 20:23:02 2014 |
rana | Summary | IOO | MC2 moved | I aligned MC2 suspension by 0.01 in pit
and yaw to align the MC better to the PSL
beam. Then I turned the WFS back on. The |
|
|
9764
|
Mon Mar 31 11:34:00 2014 |
manasa | Summary | IOO | MC2 moved |
|
|
|
14804
|
Wed Jul 24 04:20:35 2019 |
Kruthi | Update | Calibration-Repair | MC2 pitch and yaw calibration | Summary: I calibrated MC2
pitch and yaw offsets to spot position in
mm. Here's what I did: |
|
|
5751
|
Fri Oct 28 03:12:37 2011 |
Suresh | Update | IOO | MC2 realigned to align MC to PSL | Around 6PM on the 27th, I found that the
C1:IOO-MC_RFPD_DCMON had risen to about 2.5V.
I checked the trend of MC2 sensors |
|
|
12973
|
Fri May 5 08:41:42 2017 |
Steve | Update | Cameras | MC2 resonant pictures | Olympus SP570 UZ - without IR blocker,
set up as Atm.3 Camera distance to
MC face ~85 cm, IOO-MC_TRANS_SUM |
|
|
2431
|
Fri Dec 18 15:40:33 2009 |
Koji | Update | IOO | MC2 spot centered / MCT QPD issue | This afternoon I felt like saying hello
to the input mode cleaner. So I decided to
center the spot on MC2. |
|
|
8169
|
Tue Feb 26 10:20:31 2013 |
Jamie | Update | SUS | MC2 suspension controller reverted to library part | I made good on my threat from yesterday
to convert the MC2 suspension controller
to the library part. Whatever changes |
|