| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
17138
|
Tue Sep 13 14:12:03 2022 |
Yehonathan | Update | BHD | Trying LO phase locking again | [Paco, Yehonathan]
Summary:
We |
|
|
17137
|
Thu Sep 8 16:03:25 2022 |
Yehonathan | Update | LSC | Realignment, arm locking, gains adjustments | {Anchal, Yehonathan}
We came this morning and the IMC
was misaligned. The IMC was realigned and |
|
|
17136
|
Thu Sep 8 12:01:02 2022 |
JC | Configuration | Lab Organization | Lab Organization | The floor cable cover has been changed
out for a new one. This is in Section X11. |
|
|
17135
|
Thu Sep 8 11:54:37 2022 |
JC | Configuration | Lab Organization | Lab Organization | The arms in the 40m laboratory have now
been sectioned off. Each arm has been divided
up into 15 sections. Along the Y arm, the |
|
|
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. |
|
|
17133
|
Tue Sep 6 17:39:40 2022 |
Paco | Update | SUS | LO1 LO2 AS1 AS4 damping loop step responses | I tuned the local damping gains for LO1,
LO2, AS1, and AS4 by looking at step responses
in the DOF basis (i.e. POS, PIT, YAW, and |
|
|
17132
|
Tue Sep 6 09:57:26 2022 |
JC | Summary | General | Lab cleaning | DB9 Cables have been assorted and placed
behind the Y-Arm. Long BNC Cables and Ethernet
Cables have been stored under the Y-Arm. |
|
|
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 |
|
|
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 |
|
|
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 |
|
|
17128
|
Fri Sep 2 15:26:42 2022 |
Yehonathan | Update | General | SOS and other stuff in the clean room | {Paco, Yehonathan}
BHD Optics box was put into the
x-arm last clean cabinet. (attachment 5) |
|
|
17127
|
Fri Sep 2 13:30:25 2022 |
Ian MacMillan | Summary | Computers | Quantization Noise Calculation Summary | P.
P. Vaidyanathan wrote a chapter in the
book "Handbook |
|
|
17126
|
Thu Sep 1 09:00:02 2022 |
JC | Configuration | Daily Progress | Locked both arms and aligned Op Levs | Each morning now, I am going to try to
align both arms and lock. Along with that,
sometime at towards the end of each week, |
|
|
17125
|
Wed Aug 31 16:11:37 2022 |
Koji | Update | General | Vertex Lab area to be cleaned | The analog electronics units piled up along
the wall was moved into 1X3B rack which was
basically empty. (Attachments 1/2/4) |
|
|
17123
|
Wed Aug 31 12:57:07 2022 |
rana | Summary | ALS | control of ALS beat freq from command line -easy | The PZT sweeps that we've been making
to characterize the ALS-X laser should probably
be discarded - the DFD was not setup correctly |
|
|
17122
|
Wed Aug 31 11:39:48 2022 |
Yehonathan | Update | LSC | Updated XARM noise budget | {Radhika, Paco, Yehonathan}
For educational purposes we update
the XARM noise budget and add the POX11 calibrated |
|
|
17121
|
Wed Aug 31 01:54:45 2022 |
Koji | Update | General | Along the Y arm part 2 | |
8x |
|
17120
|
Wed Aug 31 01:53:39 2022 |
Koji | Update | General | Along the Y arm part 1 |
|
9x |
|
17119
|
Wed Aug 31 01:30:53 2022 |
Koji | Update | General | Along the X arm part 4 | Behind the X arm tube |
|
|
17118
|
Wed Aug 31 01:25:37 2022 |
Koji | Update | General | Along the X arm part 3 |
|
9x |
|
17117
|
Wed Aug 31 01:24:48 2022 |
Koji | Update | General | Along the X arm part 2 |
|
9x |
|
17116
|
Wed Aug 31 01:22:01 2022 |
Koji | Update | General | Along the X arm part 1 |
Attachment 5:
RF delay line was accommodated in 1X3B. (KA) |
9x |
|
17115
|
Wed Aug 31 00:46:56 2022 |
Koji | Update | General | Vertex Lab area to be cleaned | As marked up in the photos.
Attachment 5: The |
9x |
|
17114
|
Wed Aug 31 00:32:00 2022 |
Koji | Update | General | SOS and other stuff in the clean room | Salvage these (and any other things).
Wrap and double-pack nicely. Put the labels.
Store them and record the location. Tell |
6x |
|
17113
|
Tue Aug 30 15:21:27 2022 |
Tega | Update | Computers | 3 FEs from LHO got delivered today | [Tega, JC]
We received the remaining 3 front-ends
from LHO today. They each have a timing card |
|
|
17112
|
Mon Aug 29 18:25:12 2022 |
Cici | Update | General | Taking finer measurements of the actuator transfer function | Took finer measurements of the x-arm aux
laser actuator tranfer function (10 kHz -
1 MHz, 1024 pts/decade) using the Moku. |
|
|
17111
|
Mon Aug 29 15:15:46 2022 |
Tega | Update | Computers | 3 FEs from LLO got delivered today | [JC, Tega]
We got the 3 front-ends from LLO
today. The contents of each box are: |
|
|
17110
|
Mon Aug 29 13:33:09 2022 |
JC | Update | General | Lab Cleanup | The machine shop looked a mess this morning,
so I cleaned it up. All power tools
are now placed in the drawers in the |
|
|
17109
|
Sun Aug 28 23:14:22 2022 |
Jamie | Update | Computers | rack reshuffle proposal for CDS upgrade | @tega This looks great, thank you for putting
this together. The rack drawing in
particular is great. Two notes: |
|
|
17108
|
Fri Aug 26 14:05:09 2022 |
Tega | Update | Computers | rack reshuffle proposal for CDS upgrade | [Tega, Jamie]
Here is a proposal for what we
would like to do in terms of reshuffling |
6x |
|
17107
|
Fri Aug 26 12:46:07 2022 |
Cici | Update | General | Progress on fitting PZT resonances | Here is an update of how fitting the resonances
is going - I've been modifying parameters
by hand and seeing the effect on the fit. |
|
|
17106
|
Thu Aug 25 16:39:31 2022 |
Cici | Update | General | I have learned the absolute basics of github | I have now added code/data to my github
repository. (it's the little victories) |
|
|
17105
|
Thu Aug 25 16:05:51 2022 |
Yehonathan | Update | SUS | Trying to fix some SUS | I tried to lock the Y/X arms to take some
noise budget. However, we noticed that TRX/Y
were oscillating coherently together ( |
|
|
17104
|
Thu Aug 25 15:24:06 2022 |
Paco | HowTo | Electronics | RFSoC 2x2 board -- fandango | [Paco, Chris Stoughton, Leo -- remote]
This morning Chris came over to
the 40m lab to help us get the RFSoC board |
|
|
17103
|
Wed Aug 24 16:37:52 2022 |
Cici | Update | General | More DFD/AUX PZT resonance measurements | Some more measurements of the PZT resonances
(now zoomed in!) I'm adjusting parameters
on our model to try and fit to it by hand |
|
|
17102
|
Wed Aug 24 12:02:24 2022 |
Paco | Update | SUS | ITMX SUS is sus UL glitches? | [Yehonathan, Paco]
This morning, while attempting
to align the IFO to continue with noise-budgeting, |
|
|
17101
|
Wed Aug 24 10:49:43 2022 |
Cici | Update | General | Measuring DFD output/X-arm laser PZT TF with Moku | We measured the TF of the X-arm laser PZT
using the Moku so we can begin fitting to
that data and hopefully creating a digital |
|
|
17100
|
Tue Aug 23 22:30:24 2022 |
Tega | Update | Computers | c1teststand OS upgrade - I | [JC, Tega, Chris]
After moving the test stand front-ends,
chiara (name server) and fb1 (boot server) |
|
|
17099
|
Tue Aug 23 14:59:15 2022 |
JC | Update | Tools | New Toolbox at Y-End | A new tool box has been placed at the Y-end!
Each drawer has its label so PLEASE
put the tools back in their correct location. |
|
|
17098
|
Mon Aug 22 19:02:15 2022 |
Tega | Update | Computers | c1teststand rack mounting for CDS upgrade II | [Tega, JC]
Moved the rack to the location
of the test stand just behind 1X7 and plan |
|
|
17097
|
Mon Aug 22 14:36:49 2022 |
rana | Update | SUS | Open loop transfer function measurements for local damping loops of Core optics | for damping and OL loops, we typically
don't measure the TF like this because
it takes forever and we don't need that |
|
|
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 |
|
|
17095
|
Fri Aug 19 15:36:10 2022 |
Koji | Update | General | SR785 C21593 CHA+ BNC broken | When Juan and I were working on the suspension
measurement, I found that CHA didn't
settle down well. |
|
|
17093
|
Fri Aug 19 15:20:14 2022 |
Koji | Update | General | Notice: SURF SUS test setup blocking the lab way | The setup was (at least partially) cleared. |
|
|
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 |
|
|
17091
|
Thu Aug 18 18:10:49 2022 |
Koji | Summary | LSC | FPMI Sensitivity | The overlapping plot of the calibrated
error and control signals gives you an approximately
good estimation of the freerun fluctuation, |
|
|
17090
|
Thu Aug 18 16:35:29 2022 |
Cici | Update | General | UGF linked to optical gain! | TL;DR: When the laser has good lock, the
OLTF moves up and the UGF moves over!
----------------------------------------------------------- |
|
|
17089
|
Thu Aug 18 14:49:35 2022 |
Yehonathan | Summary | LSC | FPMI Sensitivity | {Yuta, Yehonathan}
We wrote a notebook found on Git/40m/measurements/LSC/FPMI/NoiseBudget/FPMISensitivity.ipynb
for calculating the MICH, DARM (currently |
|
|
17088
|
Wed Aug 17 11:10:51 2022 |
rana | Update | Computers | c1teststand rack mounting for CDS upgrade | we want to be able to run SimPlant on the
teststand, test our new controls algorithms,
test watchdogs, and any other software upgrades. |
|
|
17087
|
Wed Aug 17 10:27:49 2022 |
Cici | Update | General | Locking X-arm AUX laser | TL;DR: Got the x-arm aux laser locked again
and took more data - my fit on my transfer
functions need improvement and my new method |
|