ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
1317
|
Wed Feb 18 03:17:40 2009 |
Yoichi | Update | LSC | Locking | Yoichi, Kakeru,
Last night, the cm_step script failed at |
|
15471
|
Sun Jul 12 02:42:01 2020 |
gautam | Update | LSC | Locking (on rossa) | Main goals tonight were:
Check if I can lock the
interferometer by working on rossa - indeed, |
|
1334
|
Tue Feb 24 02:23:40 2009 |
Yoichi | Update | Locking | Locking - MC board bad | Rob, Yoichi, Alberto, Kiwamu, Kakeru
We found that the OMC alignment feedback |
|
15037
|
Wed Nov 20 01:07:18 2019 |
gautam | Update | LSC | Locking - progress | Summary:
CARM offset was reduced
to 0 with the PRMI locked.
TRY |
|
15038
|
Wed Nov 20 12:14:17 2019 |
gautam | Update | LSC | Locking - progress | I took a look at the TRX/TRY RIN reported
in the single arm POX/POY lock, and compared
the performance of the two available PDs |
|
15034
|
Mon Nov 18 21:04:38 2019 |
gautam | Update | LSC | Locking - some ideas | Some ideas Koji suggested:
Try approaching the CARM
offset zero point "from the other side" |
|
17277
|
Thu Nov 17 11:24:39 2022 |
JC | HowTo | LSC | Locking MICH | [Yuta, JC]
Here is the Yuta's Alignment
Scheme from elog |
|
1329
|
Fri Feb 20 03:52:23 2009 |
Yoichi | Update | Locking | Locking Tonight | Yoichi, Peter
Tonight, we had a problem with the DD hand |
|
17087
|
Wed Aug 17 10:27:49 2022 |
Cici | Update | General | Locking X-arm AUX laser | TL;DR: Got the x-arm aux laser locked again
and took more data - my fit on my transfer
functions need improvement and my new method |
 |
2583
|
Tue Feb 9 17:18:45 2010 |
josephb | Summary | Computers | Locking Y arm successful with fully replaced front-end for ITMY | We were able to lock the Y-arm using Megatron
and the RCG generated code, with nothing
connected to c1iscey. |
|
9945
|
Tue May 13 03:30:10 2014 |
Jenne | Update | LSC | Locking activities - no progress | [Jenne, Rana, EricQ]
We tried a few times to engage
the AO path while holding CARM on sqrtTrans |
|
10485
|
Wed Sep 10 02:53:32 2014 |
Jenne | Update | LSC | Locking activities - nothing new :( | [Jenne, EricQ]
No major progress today.
I fixed a bug in my lockloss script |
|
10486
|
Wed Sep 10 02:59:42 2014 |
ericq | Update | LSC | Locking activities - nothing new :( | Some small things I did tonight which did
little to nothing to help:
I reset the offsets in |
|
6420
|
Wed Mar 14 23:02:09 2012 |
Koji | Update | LSC | Locking activity | Kiwamu and Koji
The target is to realize DRMI or
PRMI + one arm with ALS. |
|
11180
|
Fri Mar 27 20:32:17 2015 |
Koji | Summary | LSC | Locking activity | - Adjutsed the IMC WFS operating point.
The IMC refl is 0.42-0.43.
- The arms are aligned with ASS |
|
14974
|
Thu Oct 17 11:19:28 2019 |
gautam | Update | LSC | Locking activity last night |
Tuning the MICH-->PRM
output matrix element
Locked
the PRMI with the carrier field resonant |
 |
8491
|
Thu Apr 25 10:19:10 2013 |
Koji | Summary | LSC | Locking activity on Apr 24th | Last night I worked on the several locking
configurations:
|
|
8500
|
Sat Apr 27 00:21:06 2013 |
Koji | Update | LSC | Locking activity on Apr 26th | When I talked with Den via phone, he recommended
to use the trigger and normalization with
POP110I. |
|
1364
|
Fri Mar 6 05:44:14 2009 |
Yoichi | Update | Locking | Locking distracted by the QPD whitenning problem again | Tonight, I was able to ramp up the arm power
to around 20. Then the DARM loop started
to oscillate and the IFO lost lock in a few |
|
1365
|
Fri Mar 6 15:23:39 2009 |
Yoichi | Update | Locking | Locking distracted by the QPD whitenning problem again | By looking at the time series of DARM signal
at the time of a lock loss, the oscillation
frequency was about 3.5kHz (see the attm1 |
 |
1296
|
Thu Feb 12 11:21:54 2009 |
Yoichi | Update | LSC | Locking effort resumed | Last night, I restarted the locking work.
Quite some time was wasted by the disconnected
REFL199 by Alberto for the cavity length |
|
557
|
Tue Jun 24 15:15:09 2008 |
John | Summary | LSC | Locking efforts | Rob, Rana, John
In the past week or so we've been working |
|
11126
|
Tue Mar 10 03:37:03 2015 |
ericq | Update | LSC | Locking efforts | [Q,
J]
Not |
 |
10267
|
Wed Jul 23 23:43:28 2014 |
ericq | Update | LSC | Locking efforts; Wrath of the Mode Cleaner | [Koji, ericq]
We were working on getting back into
the locking groove tonight. |
|
15012
|
Tue Nov 5 11:52:27 2019 |
gautam | Update | LSC | Locking notes | Summary:
I am still unable to achieve arm
powers greater than TRX/TRY ~10 while keeping |
|
15466
|
Fri Jul 10 01:25:28 2020 |
gautam | Update | LSC | Locking notes | More tomorrow, but I tried the following
tonight:
Dither alignment for PRC |
|
14160
|
Tue Aug 14 00:27:55 2018 |
gautam | Update | LSC | Locking prep | In preparation for attempting some DRMI
locking, I did the following:
Slow machine reboots for |
|
14954
|
Tue Oct 8 18:35:09 2019 |
gautam | Update | LSC | Locking prep | In preparation for some locking work tonight,
I did the following at the POP in air table
with the PRMI locked on carrier: |
|
1301
|
Fri Feb 13 13:35:38 2009 |
Yoichi | Update | LSC | Locking status | Yoichi, Jenne, Alberto, Rob
Last night, the locking proceeded until the |
|
1304
|
Sat Feb 14 16:53:26 2009 |
rob | Update | LSC | Locking status | [quote]Yoichi, Jenne, Alberto, Rob
Last night, the locking proceeded until the |
|
1305
|
Sun Feb 15 09:35:00 2009 |
Yoichi | Update | LSC | Locking status | [quote]
I found a '$<' in the offloadMCF script.
I don't know precisely what that construct |
|
1306
|
Sun Feb 15 15:53:21 2009 |
Rob | Update | LSC | Locking status | [quote]
I didn't get a chance to do much testing
since the sus controller (susvme1) went nuts. |
|
1323
|
Thu Feb 19 04:16:17 2009 |
Yoichi | Update | LSC | Locking status | Rob, Yoichi
We checked the CM-MC cross over just before |
|
1336
|
Wed Feb 25 03:10:24 2009 |
Yoichi | Update | Locking | Locking status | Rob, Yoichi, Kakeru, Kiwamu
Tonight, CARM -> MCL hand off was not stable. |
|
1458
|
Wed Apr 8 02:47:42 2009 |
Yoichi | Update | Locking | Locking status | This is a summary of activities in the last
few nights, although there is not much progress.
|
  |
1522
|
Sat Apr 25 03:27:34 2009 |
Yoichi | Update | Locking | Locking status | Yoichi, Peter,
We are working on the final step of the lock |
|
5512
|
Thu Sep 22 01:45:41 2011 |
Keiko | Update | LSC | Locking status update | Keiko, Anamaria
Tonight we want to measure the LSC
matrix for PRMI and compare the simulation |
 |
5516
|
Thu Sep 22 11:50:37 2011 |
Koji | Update | LSC | Locking status update | Both loops basically have no phase margins.
i.e. unstable. How can you lock PRMI with
these servos? |
|
5513
|
Thu Sep 22 04:49:14 2011 |
Anamaria | Update | LSC | Locking status update - Some Scripts, No Louck | The scripts I wrote can be found in /users/anamaria/scripts/sensemat/
]There are two of them:
- one that sets all the switches, |
|
14962
|
Thu Oct 10 01:12:56 2019 |
gautam | Update | LSC | Locking studies | Summary:
ALS control of arms in
the CARM/DARM basis seems pretty robust - |
|
1419
|
Tue Mar 24 03:05:25 2009 |
Yoichi | Update | Locking | Locking tonight | MC1 issue:
The MC1 seems to be drifting still. I found
it was off from the SUS drift-mon reference |
|
15491
|
Fri Jul 17 00:18:13 2020 |
gautam | Update | General | Locking updat |
I found that an EPICS channel wasn't
reset to the correct value by burtrestore
after the FE bootfest yesterday.
This |
|
1399
|
Fri Mar 13 05:16:21 2009 |
Yoichi | Update | Locking | Locking update | Yoichi, Osamu,
With adjustments of the loop gains during |
 |
10814
|
Thu Dec 18 02:23:34 2014 |
ericq | Update | LSC | Locking update | [ericq, Diego]
Some locking efforts tonight; many
locklosses due to PRC angular motion. Furthest |
 |
14983
|
Tue Oct 22 00:52:27 2019 |
gautam | Update | LSC | Locking updates |
Transition of arms from POX/POY
to CARM/DARM was much smoother today - a
change was made at the EX PDH setup, see |
|
15014
|
Wed Nov 6 02:08:48 2019 |
gautam | Update | LSC | Locking updates | Summary:
There seems to be stronger-than-expected
coupling between CARM and the 3f sensors. |
|
15185
|
Tue Feb 4 02:13:02 2020 |
gautam | Update | LSC | Locking updates | Summary:
The CARM-->RF transition remains
out of reach. No systematic diagnosis scheme |
 |
15192
|
Thu Feb 6 01:25:50 2020 |
gautam | Update | LSC | Locking updates | Summary:
I managed to partially stabilize
the arm citculating powers - they stay in |
 |
15278
|
Tue Mar 17 01:22:03 2020 |
gautam | Update | LSC | Locking updates | Summary:
No real progress tonight - I made
it a bunch of times to the point where CARM |
|
373
|
Thu Mar 13 02:52:06 2008 |
Lisa | Configuration | LSC | Locking with 3f | Today we have tried to use the reflected signal
demodulated at 3*f1 ~ 99 MHz ([COLOR=chocolate][B]REFL31[/B][/COLOR])
for length control.
|
|