| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
17242
|
Tue Nov 8 10:35:26 2022 |
Anchal | Update | SUS | IMC F2A test | This time the test was succesful but I
have reverted MC3 f2a filters back to with
Q=3, 7, and 10. The inital part of the test |
|
|
17245
|
Tue Nov 8 18:12:01 2022 |
Anchal | Update | SUS | MC2 OSEMs calibrated using MC_F | I reran this measurement at low frequency
0.1016 Hz. Following were the cts2um gain
changes: |
|
|
17246
|
Tue Nov 8 19:39:34 2022 |
Anchal | Update | SUS | MC3 OSEMs calibrated using MC_F | I did the same measurement for MC3 with
one difference that OSEMs report |
|
|
17249
|
Wed Nov 9 11:07:16 2022 |
Anchal | Update | SUS | IMC test | Following configurations were kept today
morning:
|
|
|
17251
|
Wed Nov 9 20:01:38 2022 |
Anchal | Update | SUS | MC1 OSEMs output is weird | I took a coil to OSEM transfer function
for MC1 osems (LL, UR) today and again
the slope of the transfer function was -1.4 |
|
|
17252
|
Wed Nov 9 20:29:20 2022 |
Anchal | Update | SUS | MC2 and MC3 set to undergo free swing test tonight | I have set a free swing test for MC2 and
MC3 to trigger at 1 am tonight. The test
should last for about 4.5 hrs upto 5:30 am. |
|
|
17256
|
Fri Nov 11 11:29:11 2022 |
Anchal | Update | SUS | MC1 OSEMs output is weird | Late elog; original time Thursday, Nov
10 16:00 2022
MC1 is using a new satellite |
|
|
17263
|
Sat Nov 12 21:59:24 2022 |
Anchal | Frogs | Computer Scripts / Programs | FSS SLOW servo not running | I stopped the Docker PID script and started
the old python script on megatron. Instructions
on how to do this are here. |
|
|
17281
|
Thu Nov 17 16:48:07 2022 |
Anchal | Frogs | Computer Scripts / Programs | FSS SLOW servo running Now | I've moved the FSS Slow PID script
running to megatron through systemd daemons.
The script is working as expected right now. |
|
|
17286
|
Fri Nov 18 17:00:15 2022 |
Anchal | Update | SUS | MC1 and MC3 OSEMs calibrated using MC_F | After the MC1 osem dewhitening was fixed,
I did the calibration of MC1 OSEM signals
using MC_F using this notebook. |
|
|
17289
|
Sun Nov 20 13:42:21 2022 |
Anchal | Update | SUS | IMC test | I repeated this test for the following
configuration:
PSL shutter closed at good |
|
|
17295
|
Mon Nov 21 18:33:05 2022 |
Anchal | Update | SUS | MC2 OSEMs calibrated using MC_F | Repeated this for MC2 using the error measurement
technique mentioned in 40m/17286
using this notebook. |
|
|
17298
|
Tue Nov 22 10:29:31 2022 |
Anchal | Summary | SUS | ITMY Coil Strengths Balanced | I followed this
procedure to balance the coil strengths
on ITMY. The position sensor was created |
|
|
17301
|
Wed Nov 23 11:06:08 2022 |
Anchal | Update | BHD | c1hpc and c1sus modified to add BS dither and demodulation option | c1hpc has option of dithering BS now (sending
excitation to BS LSC port to c1sus over IPC).
This is available for demodulating BHDC and |
|
|
17310
|
Thu Nov 24 11:23:35 2022 |
Anchal | Update | SUS | Low noise state | I've turned off HEPA fan and all lights
at
PST: 2022-11-24 11:23:59.509949 PST |
|
|
17311
|
Thu Nov 24 15:37:45 2022 |
Anchal | Update | ASC | IMC WFS output matrix diagonalization effort | I tried following the steps and the method
I was using converged to same output matrix
upto 2 decimal points but there is still |
|
|
17312
|
Fri Nov 25 12:15:46 2022 |
Anchal | Update | VAC | Vacuum Gate valves restored | I came today to find that PSL shutter was
closed. I orginially thought some shimmer
obersvations are underway in the quiet state. |
|
|
17313
|
Fri Nov 25 15:35:23 2022 |
Anchal | Update | SUS | Low noise state | Turned off HEPA at:
PST: 2022-11-25 15:34:55.683645
PST |
|
|
17315
|
Mon Nov 28 11:15:23 2022 |
Anchal | Update | CDS | Front ends DAC Kill (DK) got activated; restored FEs | [Anchal, Paco, Yehonathan, JC]
Last night at 9:15 pm PST (Nov
27th, 2022) some kind of disruption happened |
|
|
17317
|
Mon Nov 28 16:53:22 2022 |
Anchal | Summary | BHD | F2A filters on LO1 LO2 AS1 and AS4 | [Paco, Anchal]
I changed the script in /opt/rtcds/caltech/c1/Git/40m/scripts/SUS/outMatFilters/createF2Afilters.py |
|
|
17320
|
Mon Nov 28 20:14:27 2022 |
Anchal | Update | ASC | AS WFS proposed path to IMC WFS heads | In Attachment 1, I give a plan for the
proposed path of AS beam into the IMC WFS
heads to use them temporarily as AS WFS. |
|
|
17322
|
Tue Nov 29 15:32:32 2022 |
Anchal | Update | BHD | c1hpc model updates to support double audio dither | Many changes have been done to c1hpc to
support dual demodulation at audio frequencies.
We moved away with ASS style of lockin setup |
|
|
17329
|
Thu Dec 1 20:43:25 2022 |
Anchal | Summary | Calibration | Single arm cal with 5 lines | [Anchal, Paco]
We are doing this attempt again
in following configuration: |
|
|
17331
|
Sat Dec 3 10:13:56 2022 |
Anchal | Update | SUS | Low noise state | I've turned off HEPA fan and all lights
at:
PST: 2022-12-03 10:13:03.184705 |
|
|
17332
|
Sat Dec 3 17:42:25 2022 |
Anchal | Update | ASC | IMC WFS Fixed for now | Today I did a lot of steps to eventually
reach to WFS locking stably for long times
and improving and keeping the IMC transmission |
|
|
17334
|
Sun Dec 4 16:44:04 2022 |
Anchal | Update | ASC | IMC WFS Fixed for now | Today, I worked on WFS loop output matrix
for PIT DOFs.
I began with the matrix |
|
|
17335
|
Mon Dec 5 12:05:29 2022 |
Anchal | Update | CDS | c1sus2 all FE models crashed spontaneously | Just a few minutes ago, all models on FE
c1sus2 crashed. I'm attaching some important
files that can be helpful in investigating |
|
|
17336
|
Mon Dec 5 16:24:45 2022 |
Anchal | Update | ASC | IMC WFS servo diagnosis | Also reply to: 40m/17255
I ran the toggleWFSoffsets.py
script to generate a step response of the |
|
|
17337
|
Mon Dec 5 20:02:06 2022 |
Anchal | Update | ASC | IMC WFS heads electronic feasibility test for using for Arm ASC | I took transfer function measurement of
WFS2 SEG4 photodiode between 1 MHz to 100
MHz in a linear sweep. |
|
|
17342
|
Tue Dec 6 16:52:26 2022 |
Anchal | Update | ASC | IMC WFS heads electronic feasibility test for using for Arm ASC | I tested teh WFS demod board for possibility
of demodulating 11 MHz or 55 MHz signal with
it. It definitely has some bandpass filter |
|
|
17348
|
Thu Dec 8 20:40:14 2022 |
Anchal | Update | ASC | WFS demodulation board modification attempt | Based on the previous two elog posts, Koji
and I decided that we should use 11 MHz signal
for arm cavity ASC and modify a spare WFS |
|
|
17352
|
Fri Dec 9 14:18:43 2022 |
Anchal | Summary | SUS | IMC optics angular actuation calibration at DC | Also reply to: 40m/16125
I migrated the code used
in 40m/16125 |
|
|
17357
|
Tue Dec 13 23:49:17 2022 |
Anchal | Update | SUS | Low noise state | I've turned off HEPA fan and all lights
at:
PST: 2022-12-13 23:49:12.955214 |
|
|
17363
|
Fri Dec 16 21:55:54 2022 |
Anchal | Update | ASC | WFS demodulation board modification attempt 2 - sort of working | [Koji, Anchal]
short version: We checked signals
at different points in the circuit to make |
|
|
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: |
|
|
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]
|
|