| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
14180
|
Thu Aug 23 16:05:24 2018 |
Koji | Update | IMC | MC/PMC trouble | I don't know what had been wrong, but
I could lock the PMC as usual.
The IMC got relocked by AutoLocker. |
|
|
14181
|
Thu Aug 23 16:10:13 2018 |
not Koji | Update | IMC | MC/PMC trouble | Great, thanks!
|
|
|
4274
|
Fri Feb 11 16:43:09 2011 |
steve | Update | VIDEO | MC1 & 3 video monitor | I set up video monitoring of MC1 and MC3 |
|
|
14851
|
Tue Aug 20 19:05:24 2019 |
Koji | Update | CDS | MC1 (and MC3) troubleshoot | Started the troubleshoot from the MC1 issue.
Gautam showed me how to use the fake PD/LED
pair to diagnose the satellite box without |
|
|
13196
|
Fri Aug 11 17:36:47 2017 |
gautam | Update | SUS | MC1 <--> MC3 | About 30mins ago, I saw another glitch
on MC1 - this
happened while the Watchdog was shutdown. |
|
|
13220
|
Wed Aug 16 19:50:17 2017 |
gautam | Update | SUS | MC1 <--> MC3 switched back | Now that all the CDS overview lights are
green, I decided to switch back the coil
driver outputs to their original state so |
|
|
13225
|
Thu Aug 17 11:17:49 2017 |
gautam | Update | SUS | MC1 <--> MC3 switched back | Seems like this modification didn't
really work. There were several large MC1
glitches, and one of them misaligned MC1 |
|
|
13226
|
Thu Aug 17 17:33:01 2017 |
gautam | Update | SUS | MC1 <--> MC3 switched back | that's why the Autolocker clears the
outputs; we don't want to be holding
the offsets from the last ms of lock when |
|
|
1703
|
Thu Jun 25 21:00:30 2009 |
Clara | Update | PEM | MC1 Accelerator set moved again; new XLR cables | I moved the MC1 set of accelerators. Might
have bumped things. If things aren't working,
look around the MC1 chamber. |
|
|
3154
|
Thu Jul 1 14:28:39 2010 |
Jenne | Update | PEM | MC1 Accelerometers in place | Kevin sent me an email with top secret
info on where one of the other accelerometer
cubes was hiding (it was with his shaker |
|
|
13878
|
Tue May 22 17:26:25 2018 |
gautam | Update | IOO | MC1 Coil Driver pulled out | I have pulled out MC1
coil driver board from its Eurocrate, so |
|
|
13880
|
Tue May 22 23:28:01 2018 |
gautam | Update | IOO | MC1 Coil Driver pulled out | This work is now complete.
MC1 coil driver board has been reinstalled, |
|
|
13883
|
Wed May 23 17:58:48 2018 |
gautam | Update | IOO | MC1 Coil Driver pulled out |
Marked up schematic + photo post
changes uploaded to DCC
page.
There was a capacitor |
|
|
13896
|
Wed May 30 10:17:46 2018 |
gautam | Update | IOO | MC1 Coil Driver pulled out | [rana,gautam]
Summary:
Last night, Rana fact-checked my |
|
|
16157
|
Mon May 24 19:14:15 2021 |
Anchal, Paco | Summary | SUS | MC1 Free Swing Test set to trigger | We've set a free swing test to trigger
at 3:30 am tomorrow for MC1. The script for
tests is running on tmux session named 'freeSwingMC1' |
|
|
16209
|
Thu Jun 17 11:45:42 2021 |
Anchal, Paco | Update | SUS | MC1 Gave trouble again | TL;DR
MC1 LL Sensor showed signs of fluctuating
large offsets. We tried to find the issue |
|
|
12657
|
Fri Dec 2 11:56:42 2016 |
gautam | Update | LSC | MC1 LEMO jiggled | I noticed 2 periods of frequent IMC locklosses
on the StripTool trace, and so checked the
MC1 PD readout channels to see if there were |
|
|
4888
|
Sun Jun 26 22:38:20 2011 |
rana | Update | CDS | MC1 LR dead for > 1 month; now revived temporarily | Since the MC1 LRSEN channel is
not wasn't working, my input matrix
diagonalization hasn't worked today |
|
|
5938
|
Fri Nov 18 01:12:14 2011 |
Suresh | Update | CDS | MC1 LR dead for > 1 month; now revived temporarily | [Den, Mirko, Suresh]
We were investigating
why there is no correlation between MC1 osem |
|
|
4776
|
Wed Jun 1 11:31:50 2011 |
josephb | Update | CDS | MC1 LR digital reading close to zero, readback ~0.7 volts | There
appears to be a bad cable connection somewhere
on the LR sensor path for the MC1 optic. |
|
|
16894
|
Mon Jun 6 21:01:22 2022 |
yuta | Update | IMC | MC1 OSEM sensor sign flipped, MC1/2/3 free swinging overnight for inmat diagonalization | [Tomislav Andric, Rana, Yuta]
We put -1 to MC1 OSEM sensor gains
and re-tuned MC1 damping. |
|
|
16895
|
Mon Jun 6 22:08:55 2022 |
Koji | Update | IMC | MC1 OSEM sensor sign flipped, MC1/2/3 free swinging overnight for inmat diagonalization | Note that MC1 has a new style sat amp because
the old one collapsed. The sign flip might
have been the result of the replacement |
|
|
1144
|
Tue Nov 18 19:37:23 2008 |
Yoichi | Update | IOO | MC1 OSEM signals sign flipped and c1susvme1 restart problem | Around 2PM, MC1 started to swing crazily.
The damping feedback was not working and |
|
|
17238
|
Mon Nov 7 20:00:37 2022 |
Anchal | Update | SUS | MC1 OSEMs output is weird | Following up, I tried to do this exercise
with MC1 and MC3. While MC3 shows expected
minute corrections to the previous value, |
|
|
17251
|
Wed Nov 9 20:01:38 2022 |
Anchal | Update | SUS | MC1 OSEMs output is weird | I took a coil to OSEM transfer function
for MC1 osems (LL, UR) today and again
the slope of the transfer function was -1.4 |
|
|
17256
|
Fri Nov 11 11:29:11 2022 |
Anchal | Update | SUS | MC1 OSEMs output is weird | Late elog; original time Thursday, Nov
10 16:00 2022
MC1 is using a new satellite |
|
|
17259
|
Fri Nov 11 19:20:23 2022 |
rana | Update | SUS | MC1 OSEMs output is weird | I
turned on the extra un-whitening filter (not |
|
|
12725
|
Mon Jan 16 23:25:07 2017 |
gautam | Update | SUS | MC1 SUS electronics investigation | [rana,gautam]
Summary:
|
|
|
12728
|
Tue Jan 17 21:29:52 2017 |
gautam | Update | SUS | MC1 SUS electronics investigation |
|
|
|
12731
|
Wed Jan 18 11:40:54 2017 |
gautam | Update | SUS | MC1 SUS electronics investigation | After the repair of the faulty LEMO cable,
I left MC1 with it's watchdog off overnight.
|
|
|
12734
|
Wed Jan 18 14:23:47 2017 |
gautam | Update | SUS | MC1 SUS electronics investigation | As part of the ongoing |
|
|
12736
|
Wed Jan 18 18:44:53 2017 |
gautam | Update | SUS | MC1 SUS electronics investigation |
|
|
|
12737
|
Thu Jan 19 08:25:12 2017 |
Steve | Update | SUS | MC1 SUS electronics investigation |
|
|
|
12739
|
Thu Jan 19 12:00:10 2017 |
gautam | Update | SUS | MC1 SUS electronics investigation | Going through the last ~20 hours of data,
the MC1 sensor channels look glitch free
the entire period. However, there is a ~10min |
|
|
12741
|
Thu Jan 19 19:56:09 2017 |
rana | Update | SUS | MC1 SUS electronics investigation | Might be. Or it might be in the satellite
box cabling. Hard to tell without a tester.
I recommend you squish the cables on there |
|
|
12742
|
Fri Jan 20 11:16:30 2017 |
gautam | Update | SUS | MC1 SUS electronics investigation | Both suspensions have been relatively well
behaved for the best part of the last two
days, since I effected the Satellite Box |
|
|
12745
|
Mon Jan 23 10:24:01 2017 |
Steve | Update | SUS | MC1 SUS electronics investigation | Two day plot of glitching suspentions:
MC3, ITMY and ETMX |
|
|
16139
|
Thu May 13 19:38:54 2021 |
Anchal | Update | SUS | MC1 Satellite Amplifier Debugged | [Anchal Koji]
Koji and I did a few tests with
an OSEM emulator on the satellite amplifier |
|
|
15376
|
Thu Jun 4 20:54:40 2020 |
gautam | Update | SUS | MC1 Slow Bias issues | Summary:
I found that there is an issue with
the MC1 slow bias voltages. |
|
|
15377
|
Thu Jun 4 21:32:00 2020 |
Koji | Update | SUS | MC1 Slow Bias issues | We can limit the EPICS values giving some
parameters to the channels. cf https://epics.anl.gov/tech-talk/2012/msg00147.php
But this does not solve the MC1 |
|
|
11446
|
Fri Jul 24 23:08:53 2015 |
Ignacio | Update | PEM | MC1 accelerators moved for future huddle test | I have moved the MC1 accelerators and cable
to the huddle test set up, in order to see
how a six witness huddle test with the improved |
|
|
15445
|
Wed Jul 1 12:50:40 2020 |
gautam | Update | PEM | MC1 accelerometers plugged in | I re-connected the 3 accelerometers located
near the MC1/MC3 chamber. It was a bit tedious
to get the cabling sorted - I estimate the |
|
|
16087
|
Tue Apr 27 10:05:28 2021 |
Anchal, Paco | Update | SUS | MC1 and MC3 F2A Filters Tested | We extended the f2a filter implementation
and diagnostics as summarized in 16086
to MC1 and MC3. |
|
|
17286
|
Fri Nov 18 17:00:15 2022 |
Anchal | Update | SUS | MC1 and MC3 OSEMs calibrated using MC_F | After the MC1 osem dewhitening was fixed,
I did the calibration of MC1 OSEM signals
using MC_F using this notebook. |
|
|
16072
|
Thu Apr 22 12:17:23 2021 |
Anchal, Paco | Update | SUS | MC1 and MC3 Suspension Optimization Summary | |
|
|
17361
|
Fri Dec 16 14:52:42 2022 |
Paco | Summary | SUS | MC1 and MC3 coil dewhitening filters added, location corrected | I corrected the filter module location
for 28 Hz ELP filter on MC1 and MC3 coil
output filter banks to FM8 (from FM9). FM9 |
|
|
15431
|
Thu Jun 25 15:11:00 2020 |
gautam | Update | SUS | MC1 coil driver resistance quartered | I implemented this change today. We only
had 100 ohm, 3W resistors in stock (no 200
ohm with adequate power rating). Assuming |
|
|
17222
|
Thu Nov 3 14:00:29 2022 |
Anchal | Update | SUS | MC1 coil strengths balanced | I balanced the face coil strengths of MC1
using following steps:
At |
|
|
1406
|
Mon Mar 16 12:26:59 2009 |
Yoichi | Configuration | IOO | MC1 drift | There seems to be a large drift of MC1 even
when there is no WFS feedback.
The attached plot is an example a 20min trend. |
|
|
1408
|
Tue Mar 17 08:44:37 2009 |
Yoichi | Configuration | IOO | MC1 drift | I'm done with the MC1 drift measurement.
The result is attached. It is clear that
MC1 is in trouble. The small drifts in the |
|