| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
16012
|
Sat Apr 10 08:51:32 2021 |
Jon | Update | CDS | I/O Chassis Assembly | I installed three of the 16-bit ADC adapter
boards assembled
by Koji. Now, the only missing hardware is the |
|
|
16014
|
Sat Apr 10 10:07:47 2021 |
rana | Update | SUS | Faster coil balancing | I think I mis-spoke about the balancing
channels before. The ~20 Hz balancing
could go into either the COIL banks or the |
|
|
16015
|
Sat Apr 10 11:56:14 2021 |
Jon | Update | CDS | 40m LSC simPlant model | Summary
Yesterday I resurrected
the 40m's LSC simPlant model, c1lsp. |
|
|
16017
|
Mon Apr 12 10:07:35 2021 |
Anchal | Update | SUS | What's F2A?? | I'm not sure I understand what F2A
is? I couldn't find a description of
this filter anywhere and don't remember |
|
|
16018
|
Mon Apr 12 17:30:11 2021 |
Yehonathan | Update | BHD | SOS assembly | Today, I screwed the plungers on the sensor
plates and installed them on the Towers.
I also installed the wire clamps on the suspension |
|
|
16020
|
Tue Apr 13 09:51:22 2021 |
rana | Update | SUS | What's F2A?? | Force to Angle. It just means the filters
that are in the POS OUTPUT matrix. I think
in the past sometimes they are called F2P |
|
|
16021
|
Tue Apr 13 16:24:38 2021 |
Ian MacMillan | Update | CDS | 40m LSC simPlant model | Added Matlab to the Docker machine. This
should help immensely with workflow as well
as keeping installed libraries consistent. |
|
|
16022
|
Tue Apr 13 17:47:07 2021 |
gautam | Update | IOO | Waveplate commissioning - software prepared | I spent some time today setting up a workable
user interface to control the waveplate.
Created some EPICS database |
|
|
16023
|
Tue Apr 13 19:24:45 2021 |
gautam | Update | PSL | High power operations | We (rana, yehonathan and i) briefly talked
about having high power going into the IFO.
I worked on some calcs a couple of years |
|
|
16024
|
Tue Apr 13 20:45:16 2021 |
Yehonathan | Update | PSL | Laser amplifier | {Yehonathan, Rana}
We unpacked the content of the
amplifier crate in front of the water fountain |
|
|
16025
|
Wed Apr 14 12:27:10 2021 |
gautam | Update | General | Lab left open again | Once again, I found
the door to the outside in the control room |
|
|
16026
|
Wed Apr 14 13:12:13 2021 |
Anchal | Update | General | Sorry, it was me | Sorry about that. It must be me. I'll
make sure it doesn't happen again. I
was careless to not check back, no further |
|
|
16028
|
Wed Apr 14 14:52:42 2021 |
gautam | Update | General | IFO State | The C1:IFO-STATE
variable is actually a bunch (16 to be precise) |
|
|
16029
|
Wed Apr 14 15:30:29 2021 |
rana | Update | General | Sorry, it was me | Maybe tighten the tensioner on the door
closer so that it closes by itself even in
the low velocity case. Or maybe just use |
|
|
16030
|
Wed Apr 14 16:46:24 2021 |
Anchal | Update | General | IFO State | That makes sense. I assumed that IFO-STATE
is configured as you have proposed it to
be configured. This could be implemented |
|
|
16031
|
Wed Apr 14 17:53:38 2021 |
Anchal | Update | SUS | Plan for calculating filter banks for output matrix aka F2A aka F2P | Plan of action
Get
the transfer functions of the suspension
plant from actuated DOF to sensed DOF. We'll |
|
|
16032
|
Wed Apr 14 19:48:18 2021 |
gautam | Update | PSL | Laser amplifier | A couple of years ago, I got some info
about the amplifier setup at the sites from
Terra - sharing here in case there is some |
|
|
16033
|
Wed Apr 14 23:55:34 2021 |
gautam | Update | Electronics | HV Coil driver assembly | I've occcupied the southernmost electronics
bench for assembling the 4 production version
HV coil driver chassis. I estimate it will |
|
|
16034
|
Thu Apr 15 09:46:24 2021 |
Yehonathan | Update | PSL | Laser amplifier | Some more relevant documents provided by
Matt:
Phase |
|
|
16035
|
Thu Apr 15 11:41:43 2021 |
Anchal | Update | SUS | Proposed filters for output matrix aka F2A aka F2P | Here' s aquick update before we leave
for lunch. We have managed to calculate some
filter that would go on the POS column in |
|
|
16036
|
Thu Apr 15 15:54:46 2021 |
gautam | Update | IOO | Waveplate commissioning - hardware installed | [jordan,
gautam] |
|
|
16037
|
Thu Apr 15 17:24:08 2021 |
Jon | Update | CDS | Updated c1auxey wiring plan | I've updated the c1auxey wiring
plan for compatibility with the new suspension
electronics. Specifically it is based on |
|
|
16038
|
Thu Apr 15 18:33:39 2021 |
Koji | Update | CDS | More 16bit ADC adapter boards | We received 10x 16bit ADC adapter boards
from Todd. S2100687~S2100696
The number of soldered resistors |
|
|
16039
|
Fri Apr 16 00:21:52 2021 |
Koji | Update | General | Glue Freezer completely frozen | I was looking at the laser head/amp and
somehow decided to open the glue freezer.
And it was stuck. I've managed to open |
|
|
16040
|
Fri Apr 16 10:58:16 2021 |
Yehonathan | Update | General | Glue Freezer completely frozen | {Paco, Anchal, Yehonathan}
We emptied the fridge and moved
the amplifier equipment on top of the amplifier |
|
|
16041
|
Fri Apr 16 11:31:00 2021 |
rana | Update | elog | elog stuck ~10 AM today | found it unresponsive. Restarted fine using
procedure documented in wiki |
|
|
16042
|
Fri Apr 16 11:36:36 2021 |
Anchal, Paco | Update | SUS | Tested proposed filters for POS colum in MC2 output matrix | We tried two sets of filters on the output
matrix POS column in MC2. Both versions failed.
Following are some details. |
|
|
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. |
|