| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
17367
|
Tue Dec 20 18:27:14 2022 |
Anchal | Summary | LSC | FPMI locked, DARM calibration data taken, FPMI BHD locked! | [Anchal, Paco, Yuta]
FPMI |
|
|
17378
|
Tue Jan 3 11:32:32 2023 |
Anchal | Update | CDS | Yearly DAQD fix 2023, did not work :( | Every year some changes need to be done
manually in a driver c code file for daqd
to work. The gpstime offset needs to be changed |
|
|
17388
|
Mon Jan 9 19:41:01 2023 |
Anchal | Update | SUS | Null stream (butterfly/pringle) row added and DQed | I updated the suspension model (/cvs/cds/rtcds/userapps/trunk/sus/c1/models/lib/sus_single_control_new.dml)
to add a 5th row in the input matrix so that
we can put in the calculated NULL stream |
|
|
17391
|
Tue Jan 10 20:24:29 2023 |
Anchal | Update | ASC | WFS demodulation board 111B - Working as expected | I've completed the modifications on
two WFS demod boards. This required replacing
all 8 mixer ICs on each board. I also tuned |
|
|
17393
|
Wed Jan 11 17:05:55 2023 |
Anchal | Update | ASC | WFS demodulation board 112B - Working as expected | The other modified board 112B has been
fixed and tested now. See the results attached.
The issue was in some malfunctioning OP284 |
|
|
17398
|
Fri Jan 13 13:34:12 2023 |
Anchal | Summary | BHD | BH44 tuned and transimpedance measured | I've tuned one gold box RFPD to be
resonant at 44.26 MHz and I left the notch
to be near 66 MHz, however, it is only effective |
|
|
17403
|
Thu Jan 19 12:12:09 2023 |
Anchal | Summary | BHD | IQ demod orthogonal | By sending two frequencies offset from
eachother to LO input and RF input, we measured
the remaining phase difference between I |
|
|
17406
|
Thu Jan 19 20:35:54 2023 |
Anchal | Update | ASC | Installed 2 flipper mirrors for handingl MC reflection beam to camera | Today I installed two flipper mirrors M3
and M4 (see attached photo) to create alternate
route for MC reflection camera beam. Both |
|
|
17407
|
Fri Jan 20 20:13:20 2023 |
Anchal | Update | ASC | Installed 2 flipper mirrors for handingl MC reflection beam to camera | After discussions with Yuta, I figured
that a better optical layout is possible
which does not interfere with the existing |
|
|
17408
|
Sat Jan 21 15:32:40 2023 |
Anchal | Update | ASC | AS WFS path nominally set | I've completed the beam redirection
path for AS beam to WFS heads in a nominal
way. By that I mean that all mirrors (M1, |
|
|
17409
|
Sat Jan 21 18:01:06 2023 |
Anchal | Update | ALS | DFD and Phase tracker AM coupling | I took transfer function measurement
of DFD AM coupling using noise excitation.
Noise excitation |
|
|
17412
|
Mon Jan 23 20:50:58 2023 |
Anchal | Update | ASC | AS WFS path beam profiled | I measured the expected beam profile by
WFS photodiodes by measuring the beam when
mode cleaner was unlocked from the point |
|
|
17416
|
Tue Jan 24 21:04:59 2023 |
Anchal | Update | ASC | AS WFS path beam profiled | I completed the mode matching calculation
today and found good solution with 360.6
mm ROC PLCX lens at -1.2 m from z=0 point. |
|
|
17425
|
Thu Jan 26 15:56:30 2023 |
Anchal | Update | ASC | 1X1 -5V sorenson tripped | [Yuta, Anchal]
|
|
|
17427
|
Thu Jan 26 18:20:43 2023 |
Anchal | Update | PEM | HEPA Monitor setup using WFS BLRMS | I implemented the BLRMS on WFS1/2_I_PIT/YAW
outputs and using there value, a HEPA state
can be defined. I've currently set it |
|
|
17435
|
Tue Jan 31 11:02:16 2023 |
Anchal | Summary | BHD | c1cal DAQ error 0x2000 fixed | The 0x2000 error happens when the rtcds
model can not acquire the requested number
of channels at their data rates. Basically, |
|
|
17436
|
Tue Jan 31 20:49:46 2023 |
Anchal | Update | ALS | Moku Phasemeter AM coupling and comparison | Model changes and addition of
Moku Phasemeter
Today
I setup Moku:Pro MP1 with phasemeter app |
|
|
17438
|
Wed Feb 1 11:52:13 2023 |
Anchal | Update | ALS | Moku Phasemeter AM coupling and comparison | I wondered if Moku could have lied about
its noise measurement since the RF source
was the same Moku device. To avoid this bias, |
6x |
|
17443
|
Thu Feb 2 19:41:49 2023 |
Anchal | Summary | PowerShutdown | Recovery from power outage events | [Anchal, JC, Radhika, Paco]
JC reported that power outage happened
twice in 40m today at around 4:17 pm. |
|
|
17444
|
Fri Feb 3 12:50:47 2023 |
Anchal | Update | ASC | AS WFS model changes and phase calibration | Model and medm changes
After
incrementally doing the model changes, I
found out that the model was failing to build |
|
|
17448
|
Sat Feb 4 14:55:25 2023 |
Anchal | Update | ASC | DC sensing matrix for AS WFS for YARM | Filter and scripts setup
I
copied IOO_WFS1_I filter bank to AWS_WFS1/2_I/Q
filter banks to copy the dewhitening and |
|
|
17449
|
Sun Feb 5 10:25:49 2023 |
Anchal | Summary | PowerShutdown | Main laser tripping | Our main laser has tripped suspiciously
twice since the power shutdown. The last
time it happened on Thursday Feb 2 night |
|
|
17452
|
Mon Feb 6 11:50:44 2023 |
Anchal | Summary | PowerShutdown | Main laser tripping | [Anchal, JC]
During shimmer test yesterday,
the man laser tripped again. This morning, |
|
|
17453
|
Mon Feb 6 20:44:34 2023 |
Anchal | Update | ASC | YARM WFS First Attempt - Success | I uploaded this measured output matrix
to the YARM WFS model:
|
|
|
17456
|
Wed Feb 8 12:25:42 2023 |
Anchal | Update | ASC | YARM WFS Loop Step Response | I did a quick step response test today
with YARM WFS loops running. Steps were put
in as offsets in channels C1:SUS-I/ETMY_ASCPIT/YAW_OFFSET |
|
|
17462
|
Mon Feb 13 17:35:20 2023 |
Anchal | Summary | BHD | 60 Hz frequency noise is coming from MC1 coils | [Anchal, Yuta]
We think we have narrowed
down the source of 60 Hz noise to one fo |
|
|
17465
|
Wed Feb 15 12:07:35 2023 |
Anchal | Update | ASC | ASC model updated to take inputs from IMC WFS | I have updates the ASC model inside c1ioo.mdl
file to take inputs from IMC WFS when selected
with AS option (on the left side of AS WFS |
|
|
17466
|
Wed Feb 15 16:16:59 2023 |
Anchal | Summary | BHD | IMC optics Coil Output Filter corrections | Overtime the coil output filters on IMC
optics have drifted into a bad configuration.
Today at the meeting, Rana told us the correct |
|
|
17499
|
Wed Mar 8 18:32:22 2023 |
Anchal | Configuration | Calibration | FPMI DARM calibration run set to happen at 1 am | On rossa in tmux session name FPMI_DARM_Cal,
a script is running to take FPMI DARM calibration
data at 1:00 am on March 9th. Please do not |
|
|
17502
|
Thu Mar 9 19:20:44 2023 |
Anchal | Configuration | Calibration | FPMI DARM calibration run set to happen at 1 am | Running this test again tonight. Will probably
run it every night now.
|
|
|
17504
|
Mon Mar 13 14:48:37 2023 |
Anchal | Update | IMC | Diagonalizing YAW output matrix using a different method | I tried a different method today to see
if it works. Following are the steps:
Run WFS relief.
Turn |
|
|
17508
|
Tue Mar 14 11:38:44 2023 |
Anchal | Update | IMC | Turned on 6:3lead FM7 on WFS1 and WFS2 YAW loops | I realized that for more phase margin,
rana
added 6:3lead filter on WFS PIT loops. |
|
|
17509
|
Tue Mar 14 13:59:11 2023 |
Anchal | Update | IMC | IMC WFS aligned and offsets reset | The WFS loops were not maximizing the IMC
transmission. The transmission counts remained
stuck at around 12500 counts. The reflection |
|
|
17527
|
Wed Mar 29 15:59:01 2023 |
Anchal | Update | IOO | c1ioo model updated to add sensing to optic angle matrices | I've updated c1ioo model with adding
WFS sensor to optic angle matrix and output
filter module option. The output filter modules |
|
|
17529
|
Wed Mar 29 17:00:23 2023 |
Anchal | Update | IOO | MC Length feedback is present but not visible in MEDM | I confirmed that MC Length feedback path
to MC2 position is present and has been turned
off in recent history. Feedback filter module |
|
|
17535
|
Tue Apr 4 11:10:19 2023 |
Anchal | Summary | NeuralNet | Testing neural network controller during day time | I ran two recently trained neural network
controllers today between 10 am and Noon.
Each test comprised of four segments: |
|
|
17537
|
Thu Apr 6 11:49:45 2023 |
Anchal | Summary | NeuralNet | Testing neural network controller during day time | I've turned on NN controller for MC
WFS PIT loops. One can disable this controller
and go back to linear controller by |
|
|
17543
|
Thu Apr 13 11:38:50 2023 |
Anchal | Update | ALS | Moku Phasemeter calibration | I calibrated the moku phasemeter setup
for reading beatnote fluctuations today.
The calibration is referred to the DFD output |
|
|
17555
|
Thu Apr 20 23:51:14 2023 |
Anchal | Update | ALS | DFD demod normalized by amplitude | I did offline analysis with the available
data. We were only saving signals at 2048
Hz rate, so analysis can not be done on 1.4 |
|
|
17556
|
Fri Apr 21 14:31:26 2023 |
Anchal | Update | ALS | DFD demod normalized by amplitude | Last night I took ITMY calibration data
using MICH with AS55_Q. Adding that to the
same plot. The error bars are probably underestimate |
|
|
17562
|
Tue Apr 25 17:06:17 2023 |
Anchal | Update | ALS | DFD demod normalized by amplitude | I modified the analysis to correct for
any affects due to Anti-Aliasing or Anti-Imaging
filters, and I also found a insignificant |
|
|
17604
|
Fri May 26 11:16:46 2023 |
Anchal | Summary | PEM | Temperature sensing circuit with AD590 | I wanted to mention here
that I have a printed circuit board design |
|
|
15851
|
Mon Mar 1 11:40:15 2021 |
Anchal, Paco | Summary | IMC | getting familiar with IMC controls | [Paco, Anchal]
tl;dr: Done no harm, no
lasting change. |
|
|
15982
|
Wed Mar 31 22:58:32 2021 |
Anchal, Paco | Update | SUS | MC2 Coil Balancing Test | A cross-coupling test has been set to trigger
at 05:00 am on April 1st, 2021. The script
is waiting on tmux session 'cB' on |
|
|
15984
|
Thu Apr 1 13:56:49 2021 |
Anchal, Paco | Update | SUS | MC2 Coil Balancing Test Results | The coil balancing attempt failed. The
off-diagonal values in the measured sensing
matrices either remained the same or increased. |
|
|
15985
|
Thu Apr 1 18:01:06 2021 |
Anchal, Paco | Update | SUS | MC2 Coil Balancing Test Results Success?? | After fixing a few things we felt were
wrong in our implementation of the algorithm,
we ran the coil balancing for 12 iterations |
|
|
15995
|
Mon Apr 5 08:25:59 2021 |
Anchal, Paco | Update | General | Restore MC from early quakes | [Paco, Anchal]
Came in a little bit after 8 and
found the MC unlocked and struggling to lock |
|
|
16001
|
Tue Apr 6 18:46:36 2021 |
Anchal, Paco | Update | SUS | Updates on recent efforts | As mentioned in last post, we earlier made
an error in making sure that all time series
arrays go in with same sampling rate in CSD |
|
|
16007
|
Thu Apr 8 17:04:43 2021 |
Anchal, Paco | Update | SUS | First Successful Coil Balancing | Today, we finally crossed the last hurdle
and got a successful converging coil balancing
run. |
|
|
16009
|
Fri Apr 9 13:13:00 2021 |
Anchal, Paco | Update | SUS | Faster coil balancing | We ran again this method but with the 'b'
parameter as a matrix instead. This provides
more gain on some off-diagonal terms than |
|