| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
16043
|
Fri Apr 16 15:47:58 2021 |
rana | Update | SUS | Tested proposed filters for POS colum in MC2 output matrix | Looks mostly right, but you
used the OSEM sensors as readbacks. |
|
|
16044
|
Fri Apr 16 18:21:36 2021 |
Yehonathan | Update | PSL | Laser amplifier | I surveyed a bit the 1X1/2 area to plan
for the installation of the laser amplifier.
There is a vacancy at the bottom |
|
|
16045
|
Fri Apr 16 19:07:31 2021 |
Yehonathan | Update | General | Glue Freezer completely frozen | There is still a huge chunk of unmelted
ice in the fridge. I moved the content of
that fridge in the main fridge and put "do |
|
|
16046
|
Sun Apr 18 21:29:55 2021 |
rana | Update | PSL | Laser amplifier |
Ideally, we put the chiller outside
of the interferometer area. The PSL chiller
used to be in the control room near the door |
|
|
16047
|
Mon Apr 19 09:17:51 2021 |
Jordan | Update | VAC | Empty N2 Tanks | When I came into the lab this morning,
I noticed that both N2 tanks were empty.
I had swapped one on Friday (4-16-21) before |
|
|
16048
|
Mon Apr 19 10:52:27 2021 |
Yehonathan | Update | General | Glue Freezer completely frozen | {Anchal, Paco, Yehonathan}
We took the glue fridge outside. |
|
|
16049
|
Mon Apr 19 12:18:19 2021 |
Anchal, Paco | Update | SUS | Tested proposed filters for POS colum in MC2 output matrix | The filters were somewhat successful, how
much we can see in attachment 1. The tip
about difference between eigenmode basis |
|
|
16050
|
Mon Apr 19 13:15:20 2021 |
Ian MacMillan | Update | CDS | 40m LSC simPlant model | The x1SUSsim model on the docker was made
in a more recent version of Simulink so I
updated Matlab (see |
|
|
16051
|
Mon Apr 19 19:40:54 2021 |
Yehonathan | Update | General | Glue Freezer completely frozen | {Paco, Yehonathan}
We broke the last chunk of ice
and cleaned the fridge. We move the fridge |
|
|
16052
|
Mon Apr 19 21:54:55 2021 |
Yehonathan | Update | CDS | Updated c1auxey wiring plan | Except for the feed-throughs that require
a DB9-M connector I finished wiring and labeling
the Acromag, following Jon's updated |
|
|
16054
|
Tue Apr 20 10:52:49 2021 |
Anchal, Paco | Update | SUS | AC gain coil output balancing for IMC | [Paco, Anchal]
We adopted the following
procedure to balance the coil output gains |
|
|
16055
|
Tue Apr 20 18:19:30 2021 |
Anchal | Update | SUS | MC2 coil balanced at DC | Following up from morning's work, I
balanced the coils at DC as well. Attachment
1 is screenshot of striptool in which blue |
|
|
16056
|
Wed Apr 21 00:08:15 2021 |
Koji | Update | PSL | PSL Table (sort of) covered / HEPA "chimney" | Shutdown Procedure:
PSL Shutter closed / MC Autolocker
disabled / PSL mechanical shutter closed |
|
|
16057
|
Wed Apr 21 01:14:03 2021 |
Koji | Update | PSL | PSL Table (sort of) covered / HEPA "chimney" | I also located the (possible) HEPA filters
in the lab. (Attachments 1~3)
Oh! This is NO-NO! We can't |
|
|
16058
|
Wed Apr 21 05:48:47 2021 |
Chub | Update | General | PSL HEPA Maintenance | Yikes! That's ONE filter.
I'll get another from storage. |
|
|
16059
|
Wed Apr 21 10:03:01 2021 |
Ian MacMillan | Update | CDS | 40m LSC simPlant model | So I am stuck on how to add the control
block to my model. I am trying to make it
as simple as possible with just a simple |
|
|
16061
|
Wed Apr 21 11:01:37 2021 |
Rana | Update | CDS | 40m LSC simPlant model | The controller would be in the c1sus model,
and connects to the c1sup plant model. So
the controller doesn't go in the plant |
|
|
16062
|
Wed Apr 21 11:09:57 2021 |
yehonathan | Update | PSL | Laser amplifier | I went to the TCS lab to take a look at
the chillers lying around. I spotted two
chillers: |
|
|
16063
|
Wed Apr 21 11:38:27 2021 |
Anchal, Paco | Update | SUS | MC2 Damping Gains Optimized | We did a step response test with MC2 Suspensoin
Damping Gains and optimized them to get <5
oscillations in ringdown. |
|
|
16064
|
Wed Apr 21 12:56:00 2021 |
Jordan | Update | VAC | Empty N2 Tanks | Installed T2 today, and leaked checked
the entire line. No issues found. It could
have been a bad valve on the tank itself. |
|
|
16065
|
Wed Apr 21 13:10:12 2021 |
Koji | Update | General | PSL HEPA Maintenance | It's probably too late to say but there
are/were two boxes. (just for record)
|
|
|
16066
|
Wed Apr 21 15:50:01 2021 |
Anchal, Paco | Update | SUS | MC2 Suspension Optimization summary |
MC2
Coil Balancing DC and AC Gains
|
|
|
16067
|
Wed Apr 21 18:49:29 2021 |
rana | Update | SUS | MC2 Suspension Optimization summary | the
POS column should be all 1 for the AC balancing. |
|
|
16068
|
Wed Apr 21 19:28:03 2021 |
Anchal | Update | PSL | PSL/IFO recovery | [Anchal, Koji]
Removed the top sheet
Opened
first from the door side so that any dust |
|
|
16069
|
Wed Apr 21 19:43:20 2021 |
Koji | Update | PSL | New HEPA speed control | The new HEPA speed controllers are attached
at the middle of the HEPA unit (not at the
edge of the unit)... (Attachment |
|
|
16071
|
Thu Apr 22 08:50:21 2021 |
Anchal | Update | SUS | MC2 Suspension Optimization summary | Yes, during the AC balancing, POS column
was set to all 1. This table shows the final
values after all the steps. The first 3 columns |
|
|
16072
|
Thu Apr 22 12:17:23 2021 |
Anchal, Paco | Update | SUS | MC1 and MC3 Suspension Optimization Summary | |
|
|
16073
|
Thu Apr 22 14:22:39 2021 |
gautam | Update | SUS | Settings restored | The MC / WFS stability seemed off to me.
Trending some channels at random, I saw that
the MC3 PIT/YAW gains were restored mixed |
|
|
16074
|
Thu Apr 22 14:41:55 2021 |
Chub | Update | PSL | New HEPA speed control | When adjusting the blower speed, give the
blower at least 30 seconds to speed up or
slow down to the set speed. The flywheel |
|
|
16075
|
Thu Apr 22 14:49:08 2021 |
gautam | Update | Computer Scripts / Programs | rossa added to RTS authorized keys | This is to facilitate running of scripts
like the CDS reboot script, mx_stream restart,
etc, from rossa, without being pwd prompted |
|
|
16076
|
Thu Apr 22 15:15:26 2021 |
gautam | Update | PSL | PMC transmission | I was a bit surprised by these numbers
suggesting the PMC transmission is only 50-60%.
I went to the table today and confirmed that |
|
|
16077
|
Thu Apr 22 15:34:54 2021 |
Anchal | Update | PSL | PMC transmission | Koji mentioned that the mode of the laser
is different for lower diode currents. So
that might be the reason why we got less |
|
|
16078
|
Thu Apr 22 15:36:54 2021 |
Anchal | Update | SUS | Settings restored | The mix up was my fault I think. I restored
the channels manually instead of using burt
restore. Your message suggests that we can |
|
|
16079
|
Thu Apr 22 17:04:17 2021 |
gautam | Update | SUS | Settings restored | Indeed, you can make your own snapshot
by specifying the channels to snap in a .req
file. But what I meant was, we should confirm |
|
|
16080
|
Thu Apr 22 17:28:34 2021 |
Yehonathan | Update | PSL | Laser amplifier | According to the aLIGO
70W amplifier interlock concept the flow
rate of the chiller should be between 5 and |
|
|
16081
|
Fri Apr 23 15:52:19 2021 |
Ian MacMillan | Update | CDS | 40m LSC simPlant model | I have attached the framework that I am
using for the full system. Plantframework.pdf
has the important aspects that I will be |
|
|
16082
|
Fri Apr 23 18:00:02 2021 |
gautam | Update | PSL | HEPA speed lowered | I will upload some plots later - but in
summary, I set the HEPA speed to ~40%. I
used (i)IMC transmission RIN, (ii) Arm cavity |
|
|
16083
|
Fri Apr 23 19:26:58 2021 |
Koji | Update | PSL | HEPA speed lowered | I believe that there is an internal setting
for the minimum flow, so the flow is not
linear ("0%" is not zero), but |
|
|
16084
|
Sun Apr 25 21:21:02 2021 |
rana | Update | CDS | SUS simPlant model |
I suggest not naming this the LSC
model, since it has no LSC stuff.
Also
remove all the diagnostic stuff in the plant |
|
|
16086
|
Mon Apr 26 18:55:39 2021 |
Anchal, Paco | Update | SUS | MC2 F2A Filters Tested | Today we tested the F2A filters created
from the DC gain values listed in 16066.
Filters:
For |
|
|
16087
|
Tue Apr 27 10:05:28 2021 |
Anchal, Paco | Update | SUS | MC1 and MC3 F2A Filters Tested | We extended the f2a filter implementation
and diagnostics as summarized in 16086
to MC1 and MC3. |
|
|
16088
|
Tue Apr 27 15:15:17 2021 |
Ian MacMillan | Update | CDS | SUS simPlant model | The first version of the single filter
plant is below. Jon and I went through compiling
a model and running it on the docker (see |
|
|
16089
|
Wed Apr 28 10:56:10 2021 |
Anchal, Paco | Update | SUS | IMC Filters diagnosed | Good
morning! |
7x |
|
16090
|
Wed Apr 28 11:31:40 2021 |
Jon | Update | VAC | Empty N2 Tanks | I checked out what happened on c1vac. There
are actually two independent monitoring codes
running: |
|
|
16091
|
Wed Apr 28 17:09:11 2021 |
Anchal | Update | SUS | Tuned Suspension Parameters uploaded for long term behavior monitoring | I have uploaded all the new settings mentioned
in 16066
and 16072. |
|
|
16092
|
Wed Apr 28 18:56:57 2021 |
Yehonathan, Jon | Update | CDS | Updated c1auxey wiring plan | We took a Supermicro from the lab (along
with a keyboard, a mouse, and a screen taken
from a table on the Y arm) and placed it |
|
|
16093
|
Thu Apr 29 10:51:35 2021 |
Jon | Update | CDS | I/O Chassis Assembly | Summary
Yesterday I unpacked
and installed the three 18-bit DAC cards
received from Hanford. I then repeated the |
|
|
16094
|
Thu Apr 29 10:52:56 2021 |
Anchal | Update | SUS | IMC Trans QPD and WFS loops step response test | In 16087
we mentioned that we were unable to do a
step response test for WFS loop to get an |
|
|
16096
|
Thu Apr 29 13:41:40 2021 |
Ian MacMillan | Update | CDS | SUS simPlant model | To add the required library: put the .mdl
file that contains the library into the userapps/lib folder.
That will allow it to compile correctly |
|
|
16097
|
Thu Apr 29 15:11:33 2021 |
gautam | Update | CDS | RFM | The problem here was that the RFM errors
cropped up again - seems like it started
~4am today morning judging by TRX trends. |
|