| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
17240
|
Tue Nov 8 08:57:18 2022 |
rana | Update | SUS | MC2 OSEMs calibrated using MC_F | this measurement is not valid because of
the coil to sensor coupling that I mentioned
before. This is why I suggested you make |
|
|
17239
|
Mon Nov 7 21:57:42 2022 |
alex | Update | General | Sensoray | I have made little progress in getting
the sensoray driver installed on Donatella.
I have confirmed that it is indeed the reason |
|
|
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, |
|
|
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 |
|
|
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 |
|
|
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. |
|
|
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 |
|
|
17233
|
Mon Nov 7 12:37:26 2022 |
Koji | Update | General | Borrowed the fiber tester for the OMC lab | I am borrowing the fiber illuminator /
fiber tester / VisiFault for the OMC lab.
It has been stored in the top drawer at the |
|
|
17232
|
Mon Nov 7 12:02:15 2022 |
Anchal | Update | SUS | IMC test with PSL shutter closed. | Following configurations were kept today
morning:
|
|
|
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 |
|
|
17230
|
Mon Nov 7 08:36:10 2022 |
JC | Update | SUS | IMC out of alignment -- f2A failure | [Paco, JC]
We came in this morning and noted
the IMC was grossly misaligned, with |
|
|
17229
|
Fri Nov 4 15:43:05 2022 |
JC | Update | Lab Organization | New Toolbox Organization | The new tool box has came in! I have spent
serious time organizing these tools and making
it look pretty, so please take care of it! |
|
|
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 |
|
|
17227
|
Thu Nov 3 17:36:00 2022 |
Anchal | Update | SUS | F2A filters on MC1, MC2, and MC3 set to test at 1 am |
|
|
|
17226
|
Thu Nov 3 17:01:47 2022 |
Chris | Update | CDS | SLwebview fixed | The simulink webview generation cronjob
on megatron was not working, apparently due
to a matlab license problem. I switched it |
|
|
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: |
|
|
17224
|
Thu Nov 3 16:00:58 2022 |
alex | Summary | General | Sensoray updates | I am currently working on getting the driver
reinstalled on Donatella for the sensoray.
An issue keeps arising that will not allow |
|
|
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: |
|
|
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 |
|
|
17221
|
Wed Nov 2 16:34:56 2022 |
Paco | Summary | Calibration | Single arm calibration run | [Anchal, Paco]
We added a notch filter on ETMY
(the actuation point of the YARM control |
|
|
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 |
|
|
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 |
|
|
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)) |
|
|
17217
|
Mon Oct 31 21:04:43 2022 |
Koji | Update | ASC | WFS inspection | Inspected the lab to see what we can do
about the IFO WFS:
WFS heads
1 |
|
|
17216
|
Wed Oct 26 16:04:12 2022 |
Paco | Summary | BHD | LO phase control with RF + audio sidebands | [Yuta, Paco]
Today
we again locked the LO phase with BH55 + |
|
|
17215
|
Wed Oct 26 10:28:05 2022 |
Paco | Update | IOO | HEPA ON / WFS ON | Turned HEPA ON this morning at 10:28 local
(pacific time) or gpstime |
|
|
17214
|
Tue Oct 25 22:24:46 2022 |
Koji | Update | IOO | HEPA OFF / WFS OFF | Turned HEPA OFF / Lab Lights OFF / WFS
Input Gain switched off for the IMC WFS signal
tests. |
|
|
17213
|
Tue Oct 25 22:01:53 2022 |
rana | Configuration | PEM | Auto Z on trillium interface board | thanks, this seems to have recentered well.
It looks like it started to act
funny at 0400 UTC on 10/24, so thats 9 PM |
|
|
17212
|
Tue Oct 25 17:27:11 2022 |
Paco | Summary | BHD | LO phase control with RF + audio sidebands | [Yuta, Paco]
Today
we locked LO phase with BH55 + Audio dithering |
|
|
17211
|
Tue Oct 25 14:29:56 2022 |
Paco | Summary | SEI | Earthquake tripped SUS | [Yuta, Paco, JC]
This
eq potentially tripped ETMY, PR2, |
|
|
17210
|
Tue Oct 25 13:55:37 2022 |
Koji | Configuration | PEM | Auto Z on trillium interface board | This nicely brought the sensing signal
back to ~zero. See attachment
Some basic info: |
|
|
17209
|
Tue Oct 25 09:57:34 2022 |
Paco | Configuration | PEM | Auto Z on trillium interface board | I pressed the Auto-Z(ero) button for ~
3 seconds at ~9:55 local (pacific) time on
the trillium interface on 1X5. |
|
|
17208
|
Tue Oct 25 08:25:00 2022 |
JC | Update | BHD | BHD fringe aligned with reduced LO and AS beam clipping | I aligned today using this scheme. I couldn't
seem to get C1:IOO-MC_TRANS_SUM above
13400 by using WFS or manually aligning. |
|
|
17207
|
Tue Oct 25 05:26:24 2022 |
rana | Summary | IOO | MC SUS tuning | in looking closer at the IMC WFS performance
I notice 2 issues:
the watchdog thresholds |
|
|
17206
|
Mon Oct 24 18:01:00 2022 |
Paco | Summary | BHD | BHD actuation measurements | [Yuta, Paco]
Today
we calibrated the actuation on BHD suspended |
|
|
17205
|
Sat Oct 22 21:36:28 2022 |
rana | Summary | BHD | BH55 phase locking efforts | give us an animated GIF of this cool new
tool! - I'm curious what happens if you
look at 2 DoF of the same suspension. Also |
|
|
17204
|
Fri Oct 21 16:15:10 2022 |
yuta | Summary | BHD | LO phase locking with BH55 audio dither trials | [Paco, Yuta]
We are still struggling with locking
LO phase in MICH or ITM single bounce with |
|
|
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 |
|
|
17202
|
Thu Oct 20 19:47:24 2022 |
Tega | Update | CDS | Relocate front-ends to Rack 1X7 | We mounted chiara, all front-end machines
and switches in rack 1x7; reconnected power,
dolphin, onestop and timing cables; and restarted |
|
|
17201
|
Thu Oct 20 14:13:42 2022 |
yuta | Summary | PSL | PMC and IMC sideband frequencies measured | I measured the sideband frequencies for
PMC and IMC lock (to use it for Mariner PMC
and IMC design). |
|
|
17200
|
Wed Oct 19 11:09:20 2022 |
Radhika | Update | BHD | BH55 RF output amplified | [Anchal, Radhika]
We selected a 102K (1 nF) ceramic
capacitor and a 100 uF electrolytic capacitor |
|
|
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 |
|
|
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: |
|
|
17197
|
Tue Oct 18 15:24:48 2022 |
Tega | Update | CDS | Rack 1X7 work proposal | |
|
|
17196
|
Mon Oct 17 22:27:25 2022 |
rana | Update | BHD | BH55 RF output amplified | 1) please remember to follow the loading
and power up instructions to avoid destroying
our low noise RF amplifiers. Its not as easy |
|
|
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 |
|
|
17194
|
Mon Oct 17 17:42:35 2022 |
JC | HowTo | OPLEV Tables | IMC Reflected beam sketch | I sketched up a quick drawing with estimated
length for the IMC reflected beam. This includes
the distances and focal length. Distances |
|
|
17193
|
Mon Oct 17 11:57:27 2022 |
Chris | Omnistructure | CDS | Timing system monitoring | I started a GPS timing monitor script,
/opt/rtcds/caltech/c1/Git/40m/scripts/cds/tempusTimingMon/tempusTimingMon.py,
which runs inside a docker container on optimus. |
|
|
17192
|
Sat Oct 15 17:22:56 2022 |
Chris | Update | Optimal Control | IMC alignment controller testing | [Anchal, Radhika, Jamie, Chris]
We conducted a test of three alternative
controllers for the IMC pitch DOFs on Friday. |
|
|
17191
|
Fri Oct 14 17:04:28 2022 |
Radhika | Update | BHD | BH55 Q abnormality + fix | [Yuta, Anchal, Radhika]
Yesterday we attempted to lock
MICH and BHD using the BH55_Q_ERR signal. |
|