| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
17081
|
Mon Aug 15 18:06:07 2022 |
Anchal | Update | General | c1vac issues, 1 pressure gauge died | [Anchal, Paco, Tega]
Disk full issue:
c1vac
was showing /var disk to be full. We moved |
|
|
17092
|
Fri Aug 19 14:46:32 2022 |
Anchal | Update | SUS | Open loop transfer function measurements for local damping loops of BHD optics | [Anchal, Tega]
As a first step to characterize
all the local damping loops, we ran an open |
|
|
17096
|
Sat Aug 20 20:26:10 2022 |
Anchal | Update | SUS | Open loop transfer function measurements for local damping loops of Core optics | I made measurements of old optics OLTF
today. I have reduced the file sizes of the
plots and data now. It is interesting that |
|
|
17129
|
Fri Sep 2 15:30:10 2022 |
Anchal | Update | General | Along the X arm part 1 | [Anchal, Radhika]
Attachment 2: The custom
cables which were part of the intermediate |
|
|
17130
|
Fri Sep 2 15:35:19 2022 |
Anchal | Update | General | Along the Y arm part 2 | [Anchal, Radhika]
The cables in USPS open box were
important cables that are part of the new |
|
|
17131
|
Fri Sep 2 15:40:25 2022 |
Anchal | Summary | ALS | DFD cable measurements | [Anchal, Yehonathan]
I laid down another temporary cable
from Xend to 1Y2 (LSC rack) for also measuring |
|
|
17134
|
Wed Sep 7 14:32:15 2022 |
Anchal | Update | SUS | Updated SD coil gain to keep all coil actuation signals digitally same magnitude | The coil driver actuation strength for
face coils was increased by 13 times in LO1,
LO2, SR2, AS1, AS4, PR2, and PR3. |
|
|
17140
|
Thu Sep 15 11:13:32 2022 |
Anchal | Summary | ASS | YARM and XARM ASS restored | With limited proof of working for a few
times (but robustly), I'm happy to report
that ASS on YARM and XARM is working now. |
|
|
17147
|
Tue Sep 20 18:18:07 2022 |
Anchal | Summary | SUS | ETMX, ETMY damping loop gain tuning | [Paco, Anchal]
We performed local damping loop
tuning for ETMs today to ensure all damping |
|
|
17152
|
Thu Sep 22 19:51:58 2022 |
Anchal | Update | BHD | BH55 LSC Model Updates - part II | I updated follwoing in teh rtcds models
and medm screens:
c1lsc
Added |
|
|
17157
|
Fri Sep 23 19:04:12 2022 |
Anchal | Update | BHD | BH55 LSC Model Updates - part III | BH55
I further
updated LSC model today with following changes:
BH55 whitening switch binary |
|
|
17165
|
Thu Sep 29 18:01:14 2022 |
Anchal | Update | BHD | BH55 LSC Model Updates - part IV | More model changes
c1lsc:
BH55_I and BH55_Q are now
being read at ADC_0_14 and ADC_0_15. The |
|
|
17166
|
Fri Sep 30 18:30:12 2022 |
Anchal | Update | ASS | Model Changes | I updated c1ass model today to use PR2
PR3 instead of TT1 TT2 for YARM ASS. This
required changes in c1su2 too. I have split |
|
|
17168
|
Sat Oct 1 13:09:49 2022 |
Anchal | Update | IMC | WFS turned on | I turned on WFS on IMC at:
PDT: 2022-10-01 13:09:18.378404
PDT |
|
|
17174
|
Thu Oct 6 11:12:14 2022 |
Anchal | Update | BHD | BH55 RFPD installation complete | [Yuta, Paco, Anchal]
BH55 RFPD installation was still
not complete until yesterday because of a |
|
|
17175
|
Thu Oct 6 12:02:21 2022 |
Anchal | Update | CDS | CDS Upgrade Plan | [Chris, Anchal]
Chris and I discussed our plan
for CDS upgrade which amounts to moving new |
|
|
17176
|
Thu Oct 6 18:50:57 2022 |
Anchal | Summary | BHD | BH55 meas diff angle estimation and LO phase lock attempts | [Yuta, Paco, Anchal]
BH55 meas diff
We
estimated meas diff angle for BH55 today |
|
|
17178
|
Fri Oct 7 22:45:15 2022 |
Anchal | Update | CDS | CDS Upgrade Status Update | [Chris, Anchal, JC, Paco, Yuta]
|
|
|
17184
|
Tue Oct 11 16:52:42 2022 |
Anchal | Update | IOO | Renaming WFS channels to match LIGO site conventions | [Tega, Anchal]
c1mcs and c1ioo models have been
updated to add new acquisition of data. |
|
|
17195
|
Mon Oct 17 20:04:16 2022 |
Anchal | Update | BHD | BH55 RF output amplified | [Radhika, Anchal]
We have added an RF amplifier to
the output of BH55. See the MICH signal on |
|
|
17198
|
Tue Oct 18 20:43:38 2022 |
Anchal | Update | Optimal Control | IMC open loop noise monitor | WFS loops were running for past 2 hours
when I made the overall gain slider zero
at: |
|
|
17199
|
Wed Oct 19 09:48:49 2022 |
Anchal | Update | Optimal Control | IMC open loop noise monitor | Turning WFS loops back on at:
PDT: 2022-10-19 09:48:16.956979
PDT |
|
|
17203
|
Fri Oct 21 10:37:36 2022 |
Anchal | Summary | BHD | BH55 phase locking efforts | After the amplifier was modified with a
capacitor, we continued trying to approach
locking LO phase to in quadrature with AS |
|
|
17218
|
Tue Nov 1 15:41:18 2022 |
Anchal | Update | SUS | F2A filter design and trial on MC1 | Following discussion in this elog thread
(40/6004),
I used the design of F2A (force to angle(pitch)) |
|
|
17219
|
Tue Nov 1 17:17:27 2022 |
Anchal | Update | SUS | Modified F2A filter design and trial on MC1 | After a quick discussion with Yuta, we
figured that the introduction of a finite
Q that Peter Fritschel does in this DCC doc |
|
|
17220
|
Tue Nov 1 17:59:23 2022 |
Anchal | Update | SUS | Added F2A filters on MC1, MC2, and MC3 | I've cleared all old attempts on F2A
filters on MC1, MC2, and MC3, and added the
default F2A filter described in the last |
|
|
17222
|
Thu Nov 3 14:00:29 2022 |
Anchal | Update | SUS | MC1 coil strengths balanced | I balanced the face coil strengths of MC1
using following steps:
At |
|
|
17223
|
Thu Nov 3 14:42:57 2022 |
Anchal | Update | SUS | MC2 coil strengths balanced | Balanced MC2 coil strengths using the
same method.
Final coil strengths found: |
|
|
17225
|
Thu Nov 3 16:22:11 2022 |
Anchal | Update | SUS | MC3 coil strengths balanced | Balanced MC3 coil strengths using the
same method.
Final coil strengths found: |
|
|
17227
|
Thu Nov 3 17:36:00 2022 |
Anchal | Update | SUS | F2A filters on MC1, MC2, and MC3 set to test at 1 am |
|
|
|
17228
|
Thu Nov 3 20:07:01 2022 |
Anchal | Summary | BHD | AS1 coil balancing required | [Anchal, Koji]
The LO phase lock that was achieved
lasts for a short time because as soon as |
|
|
17231
|
Mon Nov 7 11:24:05 2022 |
Anchal | Update | SUS | F2A filters on MC1, MC2, and MC3 set to test at 1 am | This test was not successfull as IMC lost
lock during the f2A filter trial. However,
we do have 1 hour off data when all f2A filters |
|
|
17232
|
Mon Nov 7 12:02:15 2022 |
Anchal | Update | SUS | IMC test with PSL shutter closed. | Following configurations were kept today
morning:
|
|
|
17234
|
Mon Nov 7 14:38:59 2022 |
Anchal | Update | SUS | MC3 coil strengths rebalanced | I checked again today by sending excitation
at POS and reading back from C1:IOO-MC_TRANS_P
and C1:IOO-MC_TRANS_Y. I found that there |
|
|
17235
|
Mon Nov 7 16:14:43 2022 |
Anchal | Update | SUS | F2A filter with Q=1, 0.3 stable with MC3 | I tired running for a few hours F2A filter
with Q=1 and for maybe 30 min Q=0.3 on MC3
today and that keeps the suspension stable. |
|
|
17236
|
Mon Nov 7 17:10:41 2022 |
Anchal | Summary | BHD | QPD installation seems like lost cause | The new QPD installation is turning out
to be much more hard than it originally seemed.
After finsing the cable, QPD and interface |
|
|
17237
|
Mon Nov 7 19:53:12 2022 |
Anchal | Update | SUS | MC2 OSEMs calibrated using MC_F | MC2 OSEM outputs were calibrated today
using MC_F to get the output values in microns.
This was done using |
|
|
17238
|
Mon Nov 7 20:00:37 2022 |
Anchal | Update | SUS | MC1 OSEMs output is weird | Following up, I tried to do this exercise
with MC1 and MC3. While MC3 shows expected
minute corrections to the previous value, |
|
|
17241
|
Tue Nov 8 10:23:42 2022 |
Anchal | Update | SUS | MC3 damping loop step responses | I tuned MC3 local damping gains by looking
at step responses in the DOF bassis. The
same procedure was followed as described |
|
|
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 |
|