| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
17364
|
Fri Dec 16 22:06:55 2022 |
Anchal | Update | SUS | Low noise state | I've turned off HEPA fan and all lights
at:
PST: 2022-12-16 22:06:53.830911 |
|
|
17365
|
Sat Dec 17 16:56:19 2022 |
Anchal | Update | ASC | WFS demodulation board modification - further study | I played with the PLL bit more today to
understand the issue. From what I understand,
the following is the summary: |
|
|
17368
|
Tue Dec 20 23:32:58 2022 |
rana | Update | ASC | WFS demodulation board modification - further study | That's great - I think this solution
will be best. Having the PLLs actually gives
us some problems - the square wave action |
|
|
17371
|
Wed Dec 21 12:38:32 2022 |
Chris | Update | Optimal Control | IMC alignment controller testing | Three additional mode cleaner alignment
controllers were tested Sunday night (remotely).
They were run in tandem with the (recently |
|
|
17373
|
Wed Dec 28 19:50:06 2022 |
Paco | Update | CDS | Another CDS crash -- restored by model restart | Stopped by lab today. Found all suspensions
undamped (even though watchdogs never tripped),
same symptom as CDS crash from earlier this |
|
|
17375
|
Fri Dec 30 12:53:47 2022 |
Koji | Update | General | 40m avoided the power outage | Received the campus power outage this (Dec
30, 2022) morning.
- ELOG is still up |
|
|
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 |
|
|
17379
|
Tue Jan 3 12:10:46 2023 |
Jamie | Update | CDS | Yearly DAQD fix 2023, did not work :( | This
whole procedure is no longer needed after
the CDS upgrade. We don't do things |
|
|
17380
|
Tue Jan 3 15:28:12 2023 |
JC | Update | OPLEV Tables | ETMX laser has died | Seems that the ETMX laser died over the
break and took an extended vacation. I swapped
the laser out with one Koji would use to |
|
|
17381
|
Tue Jan 3 16:11:05 2023 |
Koji | Update | CDS | Chiara local backup | I checked how the local backup of our /cvs/cds
is done. The last backup was taken on 2022-12-15
and it kept failing since 2022-12-16. |
|
|
17382
|
Tue Jan 3 17:41:55 2023 |
Koji | Update | CDS | Chiara local backup | Chris modified the fstab so that the disk
is automatically mounted. The key was that
these two disks have an identical UUID and |
|
|
17383
|
Wed Jan 4 08:52:11 2023 |
JC | Update | OPLEV Tables | ETMX laser has died | Koji mentioned to me that this laser has
a degraded output. I removed this replacement
laser and put in a new laser from the Y Arm |
|
|
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 |
|
|
17389
|
Tue Jan 10 15:07:33 2023 |
JC | Update | General | Clean Large Optical Table | I have been working on cleaning the large
optical table next to the PSL table. I have
placed the known optics along in the optical |
|
|
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 |
|
|
17394
|
Thu Jan 12 10:06:10 2023 |
Paco | Update | ALS | DFD discriminant calibration | [Paco, Anchal] Log from yesterday
work around 1Y2 rack; note that while this
work was ongoing, TT2 position drifted slowly |
|
|
17396
|
Thu Jan 12 15:31:27 2023 |
Radhika | Update | ALS | XARM green laser lock debugging | [Radhika, Anchal, Paco]
AUX
PDH Loop Stability |
|
|
17397
|
Thu Jan 12 18:51:17 2023 |
Paco | Update | ALS | DFD and Phase tracker AM coupling | [Anchal, Paco]
We measured DFD AM coupling; it
seems to be minimum at higher RF input and |
|
|
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 |
|
|
17411
|
Mon Jan 23 16:31:23 2023 |
rana | Update | ALS | DFD and Phase tracker AM coupling | Both the TF measurement and the noise measurements
are useful, but the nosie measurement is
much more meaningful. Since we expect the |
|
|
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. |
|
|
17418
|
Wed Jan 25 10:02:47 2023 |
yehonathan | Update | | Earthquake, MC3 watchdog tripped | We came this morning and noticed the FSS_FAST
channel was moving very rapidly. Short inspection
showed that MC3 watchdog got tripped. After |
|
|
17420
|
Wed Jan 25 12:49:14 2023 |
Radhika | Update | ALS | XARM green laser lock debugging | |
|
|
17422
|
Wed Jan 25 16:58:19 2023 |
Alex | Update | Cameras | Recording CCD cameras | Thus far, the software needed for the Magewell
video encoder has been successfully installed
on Donatella. OBS studio has also been installed |
|
|
17424
|
Thu Jan 26 00:18:54 2023 |
Koji | Update | Cameras | Recording CCD cameras | Connect any video signal supported by the
adapter. Use Windows / Mac or any other OS.
If it keeps complaining, contact Magwell |
|
|
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 |
|
|
17428
|
Thu Jan 26 23:33:19 2023 |
Koji | Update | LSC | EP30-2 Epoxy bonding for Yuta | @OMC Lab
EP30-2 Epoxy bonding of V beam dumps
for LSC PDs. |
|
|
17429
|
Fri Jan 27 11:26:31 2023 |
rana | Update | PEM | HEPA Monitor setup using WFS BLRMS | this is very exciting! Its the beginning
of the task of reducing vast amounts of PEM
data into human-useful (bite sized) info. |
|
|
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 |
|
|
17437
|
Wed Feb 1 09:56:00 2023 |
Radhika | Update | ALS | XARM green laser lock debugging | |
7x |
|
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 |
|
17439
|
Wed Feb 1 12:55:14 2023 |
Radhika | Update | ALS | XARM green laser lock debugging | I reconnected the green REFL monitor channel
and acquired its spectra when the laser was
(mostly) locked. During the collection window, |
|
|
17440
|
Wed Feb 1 14:43:21 2023 |
JC | Update | VAC | False Nitrogen Leakage | Chub mentioned to Paco and I that the Nitrogen
seemed to be losing pressure quicker than
usual. After looking over the previous 4 |
|
|
17442
|
Thu Feb 2 13:21:39 2023 |
Radhika | Update | General | Mephisto laser interlock | Today while aligning optics at the xend,
my knee engaged the AUX laser interlock.
I spent some time trying to disable the interlock, |
|
|
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 |
|
|
17445
|
Fri Feb 3 17:31:34 2023 |
JC | Update | General | Visit from Steve Vass | [Steve, Koji, JC]
Steve Vass came by today and was
loaded with information. Here are a couple |
|
|
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 |
|