| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
12620
|
Wed Nov 16 08:14:43 2016 |
Steve | Update | LSC | DRMI locked on 1f and 3f signals | Nice job.
|
|
|
12630
|
Mon Nov 21 14:02:32 2016 |
gautam | Update | LSC | DRMI locked on 3f signals, arms held on ALS | Over the weekend, I was successful in locking
the DRMI with the arms held on ALS. The locks
were fairly robust, lasting order of minutes, |
|
|
12638
|
Wed Nov 23 16:21:02 2016 |
gautam | Update | LSC | ITMY UL glitches are back |
|
|
|
12644
|
Tue Nov 29 11:07:37 2016 |
Steve | Update | LSC | ITMY UL glitches are back | 400 days plot. Satelite amp ITMY has been
swapped with ETMY
Unlabeled sat.amps are labeled. |
|
|
12648
|
Wed Nov 30 01:47:56 2016 |
gautam | Update | LSC | Suspension woes | Short summary:
Looks |
|
|
12652
|
Wed Nov 30 17:08:56 2016 |
gautam | Update | LSC | Binary output breakout box removed | [ericq, gautam]
To diagnose the glitches in OSEM
readouts, we |
|
|
12653
|
Thu Dec 1 02:19:13 2016 |
gautam | Update | LSC | Binary output breakout box restored | As we suspected, the binary breakout board
(D080478, no drawing available) is simply
a bunch of tracks printed on the PCB to route |
|
|
12654
|
Thu Dec 1 08:02:57 2016 |
Steve | Update | LSC | glitching ITMY_UL_LL |
|
|
|
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 |
|
|
12664
|
Mon Dec 5 15:05:37 2016 |
gautam | Update | LSC | MC1 glitches are back | For no apparent reason, the MC1 glitches
are back. Nothing has been touched near the
PD whitening chassis today, and the trend |
|
|
12674
|
Thu Dec 8 10:13:43 2016 |
Steve | Update | LSC | glitching ITMY_UL has a history |
|
|
|
12860
|
Wed Mar 1 17:25:28 2017 |
Steve | Update | LSC | MCREFL condition pictures | Gautam and Steve,
Our MCREFL rfpd |
|
|
12891
|
Fri Mar 17 14:49:09 2017 |
gautam | Update | LSC | MCREFL condition pictures | I did a quick measurement of the beam size
on the MC REFL PD today morning. I disabled
the MC autolocker while this measurement |
|
|
12952
|
Thu Apr 27 16:41:13 2017 |
Eric Gustafson | Update | LSC | Status of the 40 m PD Frequency Response Fiber System | There two reports in the DCC describing
the state of the system as of October 2014
including: (1) Alex Cole’s “T1300618 |
|
|
13022
|
Wed May 31 12:58:30 2017 |
Eric Gustafson | Update | LSC | Running the 40 m PD Frequency Response Fiber System; Hardware and Software | Overall Design
A schematic of the overall subsystem
diagran in attachment. |
|
|
13248
|
Thu Aug 24 00:39:47 2017 |
gautam | Update | LSC | DRMI locking attempt | Since the single arm locking and dither
alignment seemed to work alright after the
CDS overhaul, I decided to try some recycling |
|
|
13250
|
Thu Aug 24 18:02:16 2017 |
Gabriele | Summary | LSC | First cavity length reconstruction with a neural network | 1) Introduction
In brief, I
trained a deep neural network (DNN) to recosntuct
the cavity length, using as input only the |
8x |
|
13251
|
Thu Aug 24 18:51:57 2017 |
Koji | Summary | LSC | First cavity length reconstruction with a neural network | Phenomenal!
|
|
|
13252
|
Fri Aug 25 01:20:52 2017 |
gautam | Update | LSC | DRMI locking attempt | I tried some DRMI |
|
|
13256
|
Sat Aug 26 09:56:34 2017 |
Gabriele | Summary | LSC | First cavity length reconstruction with a neural network | Update
I included the 55 MHz
sideband and higher order modes in my
training examples. To keep things simple, |
|
|
13258
|
Mon Aug 28 08:47:32 2017 |
Jamie | Summary | LSC | First cavity length reconstruction with a neural network |
|
|
|
13274
|
Wed Aug 30 11:04:08 2017 |
Gabriele | Summary | LSC | First look at neural network reconstruction of PRMI motion | Introduction
I trained a deep
neural network (DNN) to reconstruct MICH
and PRCL degrees of freedom in the PRMI configuration. |
|
|
13276
|
Wed Aug 30 19:49:33 2017 |
gautam | Update | LSC | REFL55 demod board debugging | Summary:
Today
I tried debugging the mysterious increase
in REFL55 signal levels in the DRMI configuration. |
|
|
13280
|
Thu Aug 31 00:52:52 2017 |
gautam | Update | LSC | REFL55 whitening board debugging | [rana,gautam] |
|
|
13281
|
Thu Aug 31 03:31:15 2017 |
gautam | Update | LSC | DRMI re-locked! | After our Demod/Whitening electronics investigations
suggested nothing obviously wrong, I decided
to give DRMI locking another go tonight. |
|
|
13289
|
Mon Sep 4 16:30:06 2017 |
gautam | Update | LSC | Oplev loop tweaking | Now that the DRMI locking seems to be repeatable
again, I want to see if I can improve the
measured MICH noise. Recall |
|
|
13290
|
Mon Sep 4 18:18:29 2017 |
rana | Update | LSC | dewhite switching: FOTON settings | not immediately necessary, since you have
already got it sort of working, but one of
these days we should optimize this for real. |
|
|
13291
|
Tue Sep 5 02:07:49 2017 |
gautam | Update | LSC | Low Noise DRMI attempt | Summary:
Tonight, I was able |
|
|
13294
|
Tue Sep 5 16:37:47 2017 |
Gabriele | Summary | LSC | Improved PRMI deep learning reconstruction | This is an update on the results already
presented earlier (refer to elog 13274 for |
|
|
13300
|
Wed Sep 6 23:06:30 2017 |
gautam | Update | LSC | Coil de-whitening switching investigation | Summary:
Rana
suggested checking if the coil de-whitening
switching is actually happening in the analog |
|
|
13304
|
Fri Sep 8 12:08:32 2017 |
Gabriele | Summary | LSC | Good reconstruction of PRMI degrees of freedom with deep learning | Introduction
This is an update
of my previous reports on applications of
deep learning to the reconstruction of PRMI |
|
|
13313
|
Fri Sep 15 16:00:33 2017 |
gautam | Update | LSC | Sensing measurement | I've been working on analyzing the
data from the DRMI locks last week.
Here are the results of the sensing |
|
|
13314
|
Fri Sep 15 17:08:58 2017 |
gautam | Update | LSC | Coil de-whitening switching investigation | I downloaded a segment of data from the
time when the DRMI was locked with the BS
and ITM coil driver de-whitening switched |
|
|
13315
|
Sat Sep 16 10:56:19 2017 |
rana | Update | LSC | Coil de-whitening switching investigation | The
absence of evidence is not evidence of absence. |
|
|
13328
|
Fri Sep 22 18:12:27 2017 |
gautam | Update | LSC | DAC noise measurement (again) | I've been working on setting up some
scripts for measuring the DAC noise.
In all the DRMI noise budgets I've |
|
|
13336
|
Wed Sep 27 22:25:21 2017 |
gautam | Update | LSC | DAC noise measurement (again) | Attachment
#1: Summary of results of measurements |
|
|
13338
|
Thu Sep 28 06:35:44 2017 |
Chris | Update | LSC | DAC noise measurement (again) | Since you're monitoring two channels
simultaneously, you could try subtracting
them, as an alternative to carving out bandstops. |
|
|
13343
|
Thu Sep 28 23:50:04 2017 |
gautam | Update | LSC | DAC noise measurement (again) | I
am running some more measurements of the
DAC noise, for which I've shut down |
|
|
13347
|
Fri Sep 29 18:36:25 2017 |
gautam | Update | LSC | DAC noise measurement (again) | BS connections and damping restored.
|
|
|
13353
|
Tue Oct 3 01:32:39 2017 |
gautam | Update | LSC | Laser intensity noise coupling to MICH (simulated) | GV Oct 6: This
coupling is probably not correct - Finesse |
|
|
13357
|
Wed Oct 4 17:38:25 2017 |
gautam | Update | LSC | FS725 for Marconi stabilization | I've located the Stanford Research
FS725 Rb reference unit. The question is
where to put it. This afternoon Steve and |
|
|
13359
|
Thu Oct 5 02:14:51 2017 |
gautam | Update | LSC | More DRMI coupling measurements - setup | In the end I decided to access the available
spare DAC channels via the C1ASS |
|
|
13362
|
Thu Oct 5 18:40:27 2017 |
gautam | Update | LSC | FS725 for Marconi stabilization | [steve, gautam]
We installed the FS725
on the shelf inside the PSL enclosure - see |
|
|
13363
|
Fri Oct 6 00:25:45 2017 |
rana | Update | LSC | FS725 for Marconi stabilization | Steve,
can you please connect this fan to the rack |
|
|
13365
|
Fri Oct 6 12:56:40 2017 |
gautam | Summary | LSC | RTCDS NN | [gabriele, gautam]
Gabriele had prepared a C code
implementation of his NN for MICH/PRCL state |
|
|
13367
|
Mon Oct 9 01:29:26 2017 |
gautam | Update | LSC | DRMI Nosie Budget v3.0 | Summary:
I
spent this weekend doing a more careful investigation
of the DRMI noise. |
7x |
|
13368
|
Mon Oct 9 11:55:01 2017 |
Koji | Update | LSC | DRMI Nosie Budget v3.0 | My last characterization of the AS55 PD
was on Feb 2013. ELOG
8100 |
|
|
13369
|
Mon Oct 9 22:18:34 2017 |
gautam | Update | LSC | AS55Q Dark Noise | I measured the output voltage noise of
the Q output of the AS55 Demod Board with
the PSL shutter closed, using the SR785 (see |
|
|
13370
|
Tue Oct 10 22:04:06 2017 |
rana | Update | LSC | AS55Q Dark Noise | how about calibrate the DC channels so
that you can just get the acutal power levels
from the trend data? |
|
|
13372
|
Wed Oct 11 14:42:03 2017 |
gautam | Update | LSC | AS55Q Dark Noise | I keep adding traces to this plot, here
is the most complete one I have now. Looks
like the input noise to the D040179 (measured |
|