| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
7708
|
Tue Nov 13 21:05:35 2012 |
Den | Update | Adaptive Filtering | online and simulation | For a last few days I've been working on
oaf and simulink model to simulate it. First
I did online subtraction from MC when MC_L |
8x |
|
7764
|
Fri Nov 30 02:40:44 2012 |
Den | Update | Adaptive Filtering | YARM | I've applied FIR adaptive filter to YARM
control. Feedback signal of the closed loop
was used as adaptive filter error signal |
|
|
7767
|
Fri Nov 30 11:49:24 2012 |
Koji | Update | Adaptive Filtering | YARM | This is interesting. I suppose you are
acting on the ETMY.
Can you construct the compensation |
|
|
7769
|
Fri Nov 30 22:11:50 2012 |
Den | Update | Adaptive Filtering | ARMS |
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7771
|
Sat Dec 1 00:13:16 2012 |
Den | Update | Adaptive Filtering | ARMS and MC |
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14010
|
Sat Jun 23 13:08:41 2018 |
Jon | Update | AUX | First Coherent AUX Scan of PRC Using AM Sidebands | [Jon, Keerthana, Sandrine]
Thu.-Fri. we continued with PRC
scans using the AUX laser, but now the "scanned" |
|
|
14011
|
Sat Jun 23 20:54:35 2018 |
Koji | Update | AUX | First Coherent AUX Scan of PRC Using AM Sidebands | How much was the osc freq of the marconi?
And then how much was the resulting freq
offset between PSL and AUX? |
|
|
14017
|
Tue Jun 26 10:06:39 2018 |
keerthana | Update | AUX | First Coherent AUX Scan of PRC Using AM Sidebands | (Jon, Keerthana, Sandrine)
I am attaching the plots of the
Reflected and transmitted AUX beam. In the |
|
|
14035
|
Tue Jul 3 11:59:10 2018 |
Jon | Update | AUX | AUX Carrier Scan of Y-Arm Cavity | I made the first successful AUX laser scan
of a 40m cavity last night.
Attachment #1 shows the measured |
|
|
14036
|
Wed Jul 4 19:11:49 2018 |
Jon | Update | AUX | More Testing of AUX-Laser Mode Scanning | More progress on the AUX-laser cavity scans.
Changes to the Setup
For
scans, the Agilent is now being used as a |
|
|
14044
|
Sun Jul 8 12:20:12 2018 |
Jon | Summary | AUX | Gouy Phase Measurements from AUX-Laser Scans | This note reports analysis of cavity scans
made by directly sweeping the AUX laser carrier
frequency (no sidebands). The measurement |
|
|
Draft
|
Wed Jul 11 18:13:19 2018 |
keerthana | Summary | AUX | Gouy Phase Measurements from AUX-Laser Scans | From the Measurement Jon made, FSR is 3.967
MHz and the Gouy phase is 52 degrees. From
this, the length of the Y-arm cavity |
|
|
14062
|
Fri Jul 13 00:15:13 2018 |
Annalisa, Terra | Configuration | AUX | Y arm cavity scan | [Annalisa, Terra, Koji, Gautam]
Summary: We
find a configuration for arm scans which |
|
|
14091
|
Fri Jul 20 18:30:47 2018 |
Jon | Configuration | AUX | Recommend to install AUX PZT driver | I recently realized that the PLL is only
using about 20% of the available actuation
range of the AUX PZT. The +/-10 V control |
|
|
14501
|
Fri Mar 29 15:47:58 2019 |
gautam | Update | AUX | AUX laser fiber moved from AS table to PSL table | [anjali, gautam]
To facilitate the 1um MZ frequency
stabilization project, I decided that the |
|
|
14504
|
Sun Mar 31 18:39:45 2019 |
Anjali | Update | AUX | AUX laser fiber moved from AS table to PSL table |
Attachment #1 shows the schematic
of the experimental setup for the frequency
noise measurement of 1 um laser source. |
|
|
16194
|
Wed Jun 9 11:46:01 2021 |
Anchal, Paco | Summary | AUX | Xend Green Laser PDH OLTF measurement | We measured the Xend green laser PDH Open
loop transfer function by following method:
We first measured the feedback |
|
|
16197
|
Thu Jun 10 14:01:36 2021 |
Anchal | Summary | AUX | Xend Green Laser PDH OLTF measurement loop algebra | Attachment 1 shows the closed loop of Xend
Green laser Arm PDH lock loop. Free running
laser noise gets injected at laser head after |
|
|
16200
|
Mon Jun 14 18:57:49 2021 |
Anchal | Update | AUX | Xend is unbearably hot. Green laser is loosing lock in 10's of seconds | Working in Xend with mask on has become
unbearable. It is very hot there and I would
really like if we fix this issue. |
|
|
16202
|
Tue Jun 15 15:26:43 2021 |
Anchal, Paco | Summary | AUX | Xend Green Laser PDH OLTF measurement loop algebra, excitation at control point | Attachment 1 shows the case when excitation
is sent at control point i.e. the PZT output.
As before, free running laser noise |
|
|
16213
|
Fri Jun 18 10:07:23 2021 |
Anchal, Paco | Summary | AUX | Xend Green Laser PDH OLTF with coherence | We did the measurement of OLTF for Xend
green laser PDH loop with excitation added
at control point using a SR560 as shown in |
|
|
17243
|
Tue Nov 8 11:18:39 2022 |
Radhika | Update | AUX | AUX PZT transfer function fitting + filtering | Here I describe efforts to cancel the AUX
laser PZT mechanical resonances from ~200
kHz-400kHz. While these may not be the resonances |
|
|
17244
|
Tue Nov 8 16:56:33 2022 |
rana | Update | AUX | AUX PZT transfer function fitting + filtering | This looks really good to me. Rather than
fully invert the plant, what we would like
to do is now design a filter which allow |
|
|
17759
|
Mon Aug 7 14:02:52 2023 |
Radhika | Update | AUX | xend AUX fully locking with Moku:Go | Moku:Go
used for full locking of green laser - OLTF
to come
Picking up from |
|
|
17773
|
Thu Aug 10 14:35:13 2023 |
Radhika | Update | AUX | XAUX out of loop error | [Radhika, Yuta, Hiroki, Paco]
During YAUX noise measurements,
we also locked IR and green lasers in xarm |
|
|
387
|
Thu Mar 20 17:45:36 2008 |
rana | Summary | ASS | Adaptive Filtering in the ASS system | Over the past couple weeks we (Matt, Alex,
Rob, me) have worked on getting an adaptive
filter
|
|
|
428
|
Fri Apr 18 19:46:08 2008 |
rana | Update | ASS | check adaptive | I restarted the adaptive code today using
'startass' and 'upass'.
I moved them into the scripts/ASS/ subdirectory.
|
|
|
432
|
Mon Apr 21 12:58:42 2008 |
rob | Update | ASS | check adaptive | [quote]
Caryn Palatchi (a Caltech undergrad who just |
|
|
579
|
Thu Jun 26 21:07:11 2008 |
rana | Configuration | ASS | dust & MC1 | I realized today, that yesterday while we
were trying to debug the adaptive noise canceler,
I turned
|
|
|
981
|
Mon Sep 22 21:54:05 2008 |
rana | Update | ASS | New Wiener result with x10 gain in ACC | The 2 attached PDF files show the performance
of the Wiener filter code on 2 hours of data
with a 4000 tap filter on 64 Hz data. All |
|
|
1105
|
Sun Nov 2 20:44:58 2008 |
rana | Update | ASS | Wiener Filter performance over 5 hours | I took one 2 hour stretch of data to calculate
a MISO Wiener filter to subtract the Ranger
seismometer
|
|
|
1111
|
Mon Nov 3 22:35:40 2008 |
rana | Update | ASS | Wiener Filter performance over 5 hours | [FONT=Comic Sans MS]To speed up the Wiener
filter work I defined a 256 Hz version of
the original 16kHz IOO-MC_L signal. The
|
|
|
1112
|
Tue Nov 4 00:47:53 2008 |
rana | Update | ASS | Wiener Filter performance over 5 hours | Same as before, but now with a working Ranger
seismometer.
|
|
|
1985
|
Fri Sep 11 17:11:15 2009 |
Sanjit | Update | ASS | OAF: progress made | [Jenne & Sanjit]
Good news: We could successfully
send filtered output to MC1 @ SUS. |
|
|
2434
|
Sun Dec 20 21:39:40 2009 |
rana, jenne, kiwamu | Update | ASS | OAF Model update and build instructions | After a lot of headache, I
got the OAF working again - read on for details.....................
|
|
|
2437
|
Mon Dec 21 02:22:31 2009 |
rana, jenne, kiwamu | Update | ASS | OAF Model update and build instructions | This allowed measuring the MC1 -> MCL
TF finally. Its mostly flat. Data saved as
Templates/OAF/OAF-MCLTF.xml |
|
|
2438
|
Mon Dec 21 07:30:58 2009 |
??? | Update | ASS | OAF Model update and build instructions | What does OAF stand for? The entry
doesn't say that. Also the acronym is not
in the abbreviation page of the wiki. |
|
|
2440
|
Mon Dec 21 10:09:06 2009 |
jenne | Update | ASS | OAF Model update and build instructions | OAF stands for Online Adaptive Filtering.
We use the same computer which was once
the ASS. One of these days, we'd like to |
|
|
2441
|
Mon Dec 21 19:24:29 2009 |
rana | Update | ASS | OAF Model update and build instructions | I fit the MC1 -> MCL TF using vectfit4.m
(from mDV). The wrapper file is mDV/extra/C1/
fitMC12MCL.m. |
|
|
2442
|
Tue Dec 22 02:50:09 2009 |
rana, kiwamu, jenne | Update | ASS | OAF Feedaround ON and doing something good | Kiwamu made the OAF screen functional today
- screenshot attached.
After this, I used the measured TF |
|
|
2449
|
Wed Dec 23 17:33:14 2009 |
rana | Update | ASS | OAF Feedaround ON and doing something good | The Rai box ran out of batteries a couple
of days ago and so the data is no good. I've
put the Ranger back on the SR560 for now |
|
|
4696
|
Wed May 11 23:02:52 2011 |
valera | Update | ASS | Dither angular stabilizitaion system update | This is what was done in past two days:
- The ETMY and ITMY pitch and yaw
dofs are modulated at 40, 44, 42, 46 Hz respectively |
|
|
4709
|
Fri May 13 00:39:53 2011 |
valera | Update | ASS | c1ass update | Here the status of the dither alignment
or c1ass:
- Both pitch and yaw centering on |
|
|
4726
|
Mon May 16 11:47:59 2011 |
kiwamu | Update | ASS | c1ass update part II | The medm screen for c1ass started being
modified to be more user-friendly.
The modification is still |
|
|
4795
|
Wed Jun 8 16:41:48 2011 |
valera | Update | ASS | X and Y arm dither alignment status | |
|
|
6723
|
Thu May 31 01:20:41 2012 |
Jenne | Update | ASS | ASS filter outputs are non-zero with no input | I was looking a little at ASS, while Yuta
was doing some Green transmitted DC PD work,
and I find that the output of some filters |
|
|
6980
|
Tue Jul 17 11:28:29 2012 |
Jenne | Update | ASS | Names of DoF filters in ASS wrong | The names of the DoF filters in the ASS
loop were wrong. The filters themselves
were correct (low pass filters at super low |
|
|
7017
|
Tue Jul 24 03:14:13 2012 |
Jenne | Update | ASS | Calibration of MC ASS lockins | I wanted to check that the calibration
of the MC ASS lockins was sensible, before
trusting them forevermore. |
|
|
7074
|
Wed Aug 1 22:37:21 2012 |
Jenne | Update | ASS | Filters installed in the ASS | As part of trying to figure out what is
going on with the ASS, I wanted to figure
out what filters are installed on which lockins. |
|
|
7075
|
Thu Aug 2 00:43:55 2012 |
Jenne | Update | ASS | Major cleanup of the ASS model | [Jamie, Jenne]
We are trying to figure out what
the story is with the ASS, and in order to |
|