ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
11062
|
Tue Feb 24 23:39:16 2015 |
Jenne | Update | LSC | Delay line re-installed again | About 5-10 minutes ago I just put in the
modulation cancellation setup according to
the recipe in http://nodus.ligo.caltech.edu:8080/40m/11032 |
|
11064
|
Wed Feb 25 04:59:47 2015 |
Jenne | Update | LSC | Delay line re-installed, measurements round 2 | [Jenne, EricQ, Rana]
We spent this evening measuring
and thinking about our 3f signals, and the |
|
11069
|
Wed Feb 25 14:51:13 2015 |
Jenne | Update | LSC | Delay line un-installed again | And now I've removed the delay line,
and am in the process of reverting the demod
phases, etc. |
|
11070
|
Wed Feb 25 20:00:39 2015 |
Jenne | Update | LSC | Delay line un-installed again - sensing matrix comparisons | I have measured the sensing matrix for
the PRMI at the REFL photodiodes for both
the nominal configuration and the 33MHz cancellation |
|
11080
|
Thu Feb 26 20:02:46 2015 |
Jenne | Update | LSC | re: some thoughts | I have clarified my elog from last night
to indicate that the sensing matrix in the
"33MHz cancellation" configuration |
|
11082
|
Fri Feb 27 03:48:29 2015 |
Jenne | Update | LSC | PRMI locked during CARM scan | One of the things that I looked at tonight
was whether or not I could hold the PRMI
on REFL165 at CARM offset of 0, and it turns |
 |
11086
|
Fri Feb 27 21:16:10 2015 |
Jenne | Update | LSC | PRMI locked during CARM scan | Here are a bunch of PDFs of time series
from last night's CARM sweeps.
The y-axes are all calibrated (except for |
8x |
11088
|
Mon Mar 2 18:34:12 2015 |
Jenne | Update | SUS | ETMX moving during single arm lock | This has been edited several times over
the last several hours, as I try to change
different parameters, to see if they affect |
    |
11089
|
Tue Mar 3 02:43:06 2015 |
Jenne | Omnistructure | PEM | No heat?? | It's super cold in the control room
and EE bench area tonight. I'm
wondering if, similar to what happened on |
|
11090
|
Tue Mar 3 04:41:45 2015 |
Jenne | Update | LSC | Transitioned DARM to AS55Q, some other work | Better elog tomorrow - notes for now:
REFL165 for PRMI has been "a
champ" (quote from Q). We're |
|
11091
|
Tue Mar 3 04:43:12 2015 |
Jenne | Omnistructure | PEM | Ottavia is dead? | After some searching, including help from
4 security guys (I think they don't have
a lot to do at 4:30am :), we found that |
|
11095
|
Tue Mar 3 19:19:54 2015 |
Jenne | Update | LSC | Transitioned DARM to AS55Q, some other work | [Jenne, EricQ]
A slightly more coherent elog for
last night's work. |
 |
11097
|
Wed Mar 4 03:42:14 2015 |
Jenne | Update | LSC | Tried a few CARM / ALS fool things, no success | Much of tonight was spent fighting with
ETMX. This time, ASC was definitely
off, there was nothing coming out of the |
|
11104
|
Thu Mar 5 20:44:30 2015 |
Jenne | Update | SUS | damprestore script updated | I just realized that the "damprestore"
script that can be called from the watchdog
screen did not have the new oplev names. |
|
11105
|
Thu Mar 5 21:42:05 2015 |
Jenne | Update | LSC | AS55Q flat at DARM zero crossing | I think we've seen this in simulations,
but it's a little disheartening to see
in real life. AS55Q looks like it flattens |
|
11108
|
Fri Mar 6 04:49:08 2015 |
Jenne | Update | LSC | AS55Q transition | [Jenne, Ranah]
We played around tonight with different
possible ways of transitioning DARM to normalized |
|
11113
|
Sat Mar 7 18:53:48 2015 |
Jenne | Update | LSC | DoF selector matrices replaced with filter banks | This is work that I did yesterday but didn't
have time to elog. Since it seems non-trivial
to give ourselves ramping matrices, but we |
|
11114
|
Sat Mar 7 19:15:17 2015 |
Jenne | Update | LSC | Modified zero crossing triggering | More work from yesterday.
Rana and I had discussed on Thursday
night that we probably want to be able to |
|
11115
|
Sat Mar 7 19:23:27 2015 |
Jenne | Update | LSC | Updated ALSwatch script | Last report on model change / screen work
from yesterday.
The ALSwatch script has always |
|
11116
|
Sat Mar 7 22:01:12 2015 |
Jenne | Configuration | LSC | CARM and DARM on RF signals!!!!!!!!!!!!!!!!!!!! | [Jenne, with Matt and Fujimi as witnesses]
It
might be about time to throw that champagne |
|
11118
|
Sun Mar 8 01:27:01 2015 |
Jenne | Configuration | LSC | CARM and DARM on RF signals!!!!!!!!!!!!!!!!!!!! | I have in my notebook that at 9:49pm CARM
was no longer using ALS as an error signal,
and at 9:50pm, DARM was no longer using ALS |
|
11119
|
Sun Mar 8 03:27:48 2015 |
Jenne | Update | LSC | Error signal blending for CARM/DARM transitions | This elog will be about work that happened
yesterday. I will write a reply to
this with work from this evening's success. |
|
11120
|
Sun Mar 8 04:04:19 2015 |
Jenne | Update | LSC | Error signal blending for CARM/DARM transitions | As I (very excitedly) reported in elog
11116, I was able to follow the error
signal blending procedure from last night, |
|
11122
|
Mon Mar 9 14:14:32 2015 |
Jenne | Update | LSC | Error signal blending for CARM/DARM transitions | Here is a longer stretch of data, from
the first RF-only lock on Saturday night.
Unfortunately daqd had died about 400 |
 |
11125
|
Mon Mar 9 18:10:59 2015 |
Jenne | Update | ASC | Oplev filters re-copied | Back on Feb 20th (elog
11056) Q replaced all of our oplev parts
with the aLIGO version. |
|
11133
|
Wed Mar 11 18:02:02 2015 |
Jenne | Update | LSC | CARM and DARM loops marginal | I have looked at the CARM and DARM RF loops,
assuming the loop shapes that we've been
using, and it pretty much looks like a miracle |
  |
11136
|
Thu Mar 12 03:47:56 2015 |
Jenne | Update | LSC | CARM and DARM loop adjustments | No wins tonight.
I've tried playing with the
shapes of the loops a little bit (mostly |
|
11139
|
Fri Mar 13 03:10:35 2015 |
Jenne | Update | LSC | 6+ CARM->REFL transitions, 1 DARM->AS transition | Much more success tonight.
I only started my tally after I got the CARM |
  |
11143
|
Sat Mar 14 01:14:09 2015 |
Jenne | Update | LSC | More stable DARM transitions | [Jenne, Koji, Rana]
Thanks to turning off the AS55
analog whitening as well as the 1k:6k lead |
|
11144
|
Sun Mar 15 18:49:57 2015 |
Jenne | Update | LSC | More stable DARM transitions | I have modified the DARM model from elog
11133, to include the fact that these |
 |
11150
|
Fri Mar 20 12:42:01 2015 |
Jenne | Update | IOO | Waking up the IFO | I've done a few things to start waking
up the IFO after it's week of conference-vacation.
PMC trans was at 0.679, aligned |
|
11153
|
Fri Mar 20 23:37:46 2015 |
Jenne | Update | SUS | Waking up the IFO | In addition to (and probably related to)
the XARM ASS not working today, the ITMX
has been jumping around kind of like ETMX |
|
11154
|
Sat Mar 21 05:19:49 2015 |
Jenne | Update | LSC | IFO awake | [Jenne, Den]
The problem with the ASS
turned out to be a mode that was rung up |
|
11169
|
Wed Mar 25 03:31:18 2015 |
Jenne | Update | LSC | Meh | [Jenne, Den]
Overall a "meh" night
for locking I think. The script to |
|
11172
|
Wed Mar 25 18:46:14 2015 |
Jenne | Update | LSC | REFL PDs get more light | After discussions during the meeting today,
I removed the PBS from the REFL path, which
gives much more light to REFL11, REFL33 and |
|
11176
|
Thu Mar 26 16:32:32 2015 |
Jenne | Update | LSC | REFL PDs get more light | Some more words on yesterday's REFL
path work.
The 90/10 BS that splits the light |
|
11186
|
Tue Mar 31 22:27:43 2015 |
Jenne | Update | Modern Control | Preliminary PRMI angular Wiener results | Before locking for the evening, I wanted
to try again implementing the Wiener
filters that I had designed back |
|
11187
|
Wed Apr 1 03:54:15 2015 |
Jenne | Update | LSC | PRMI to 1f twice | I got the PRMI transitioned from REFL165
over to REFL55 two times tonight. Also,
I had 2 long-ish locks, one 9 minutes, and |
|
11190
|
Wed Apr 1 16:52:02 2015 |
Jenne | Update | LSC | List of measurements | I'd like to get a concrete list of
measurements written down, so that it's
clear what needs to be done before I graduate. |
|
11192
|
Thu Apr 2 01:28:34 2015 |
Jenne | Update | LSC | X Green Power drifting | Have you tried a different set of laser
temperatures? I don't remember
the value for the Xgreen, but whatever the |
|
11193
|
Thu Apr 2 01:45:44 2015 |
Jenne | Update | LSC | X Green Power drifting |
|
|
11197
|
Fri Apr 3 05:17:36 2015 |
Jenne | Update | LSC | PRMI to 1f twelve times | I have 12 tick marks for times I got all
the way to 1f for all 4 degrees of freedom
in the PRFPMI. The CARM / DARM transitions |
|
11201
|
Fri Apr 3 19:35:14 2015 |
Jenne | Update | SUS | BS oplev centered | I think that this happens when the beam
gets too close to the edge of the QPD.
We see this regularly in the ETMs, if they've |
|
11205
|
Tue Apr 7 04:17:42 2015 |
Jenne | Update | PEM | jackhammering at ETMX | Q is writing the locking elog for the night,
but just to reply to this thread: The
IFO worked well tonight, so things are at |
|
11207
|
Wed Apr 8 03:44:48 2015 |
Jenne | Update | LSC | Mediocre locking night | It was only a mediocre locking night.
I was foiled for a long time by 2 things,
both of which are now taken care of in the |
|
11212
|
Fri Apr 10 03:44:51 2015 |
Jenne | Update | LSC | Some small progress, may have DAC problem? | Small steps tonight, but all in the forward
direction.
On one of my better locks, I saw |
|
11221
|
Wed Apr 15 20:54:18 2015 |
Jenne | Update | Computer Scripts / Programs | CDSutils upgrade bad | The SUS align/misalign scripts don't
work after the new CDS utils upgrade.
I don't know if it's looking |
|
11222
|
Wed Apr 15 21:00:56 2015 |
Jenne | Update | LSC | DAC fine | The DAC was fine. I realized tonight
that the digital filter bank outputs were
off, so I wasn't actually sending signals |
|
11223
|
Wed Apr 15 23:29:08 2015 |
Jenne | Update | Computer Scripts / Programs | CDSutils upgrade undone | Q remotely reverted this change.
Scripts seem to work again.
|
|
11225
|
Sun Apr 19 15:03:26 2015 |
Jenne | Update | Electronics | Low noise pre-amps? | Does anyone know where the Busby
or Rai low noise pre-amp boxes are?
|
|