| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
14709
|
Sun Jun 30 19:47:09 2019 |
rana | Update | IOO | IMC WFS agenda | we are thinking of doing a sprucing up
of the input mode cleaner WFS (sensors +
electronics + feedback loops) |
|
|
14710
|
Sun Jun 30 22:02:26 2019 |
Milind | Update | Cameras | Keyed c1aux crate | I wanted to try out the unstick.py script
on c1aux but kept running into timeout errors.
I was also confronted by a blank GigE screen. |
|
|
14711
|
Sun Jun 30 22:21:07 2019 |
Milind | Update | IOO | PMC and IMC locked again, some MEDM maintenance | Wrote the script. It currently lives at
/users/milind/NonlinearControl/milind/unstick/unstick.py.
Also pushed it to the repo here. |
|
|
14712
|
Sun Jun 30 23:52:09 2019 |
Koji | Update | IOO | PMC and IMC locked again, some MEDM maintenance | > For channels corresponding
to continuous values (such as say exposure
time or the like) changes to abs(1+current_value) |
|
|
14713
|
Mon Jul 1 11:02:05 2019 |
Milind | Update | IOO | PMC and IMC locked again, some MEDM maintenance | Made changes as discussed in this
issue. Further, I need to add signal handling
capabilities to the code. I belive Jon has |
|
|
14714
|
Mon Jul 1 20:11:34 2019 |
Milind | Update | Cameras | Simulation enhancements | Today, I read a lot more about BRDF and
modelling but could not make much headway
regarding the implementation in the simulation. |
|
|
14715
|
Mon Jul 1 20:18:01 2019 |
Milind | Update | Computer Scripts / Programs | PMC autolocker | I've begun working on this. Steps to
complete:
Convert the autolocker |
|
|
14716
|
Mon Jul 1 20:27:44 2019 |
gautam | Update | ASC | ASX tuning | Summary:
To practise the dither alignment
servo tuning, I decided to make the ASX system |
|
|
14717
|
Tue Jul 2 12:30:44 2019 |
Milind | Update | Computer Scripts / Programs | PMC autolocker | Just finished a raw version of the autolocker!!
Tested it once and was able to achieve lock!
This is a python version of the code at /opt/rtcds/caltech/c1/scripts/PSL/PMC/AutoLock.sh. |
|
|
14718
|
Tue Jul 2 12:30:53 2019 |
gautam | Update | Electronics | Acromag crate switched to Sorensens | [chub, gautam]
We crossed off another couple of |
|
|
14719
|
Tue Jul 2 16:57:09 2019 |
gautam | Update | CDS | c1sus is flaky | Since the work earlier this morning, the
fast c1sus model has crashed ~5 times. Tried
rebooting vertex FEs using the reboot script |
|
|
14720
|
Tue Jul 2 17:34:54 2019 |
gautam | Update | LSC | Irides opened up on EY table | In preparation for the ASS debugging, I decided |
|
|
14721
|
Tue Jul 2 19:36:18 2019 |
aaron | Update | IOO | IMC diagnostics | The latest in my fling with the PMC. Though
PMC trans is back to nominal levels (~0.713
V), we'd still like to understand the |
|
|
14722
|
Wed Jul 3 11:47:36 2019 |
gautam | Update | BHD | PRC filtering | A question was raised as to how much passive
filtering we benefit from if we pick off
the local oscillator beam for BHD from the |
|
|
14723
|
Wed Jul 3 23:53:38 2019 |
Milind | Update | Cameras | data for nns | Tried collecting data today. Was unable
to keep the camera_server code running for
any length of time as it threw segfaults. |
|
|
14724
|
Thu Jul 4 10:47:37 2019 |
Milind | Update | General | Earthquake now | There was a magnitude 6.6 earthquake just
a few minutes ago. I am attaching photographs
of the monitor feeds for reference here. |
|
|
14726
|
Thu Jul 4 18:19:08 2019 |
Milind | Update | Cameras | Convolutional neural networks for beam tracking | The quoted elog has figures which indicate
that the network did not learn (train or
generalize) on the used data. This is a scary |
|
|
14727
|
Fri Jul 5 20:57:04 2019 |
Koji | Update | SUS | Another M7.1 EQ | [Kruthi, Koji]
Koji came to the lab to align the
IMC/IFO, but found the mirrors are dancing |
|
|
14728
|
Fri Jul 5 21:53:10 2019 |
Koji | Update | SUS | Another M7.1 EQ | - ITM
unstuck now
- IMC briefly locked at TEM00 |
|
|
14729
|
Fri Jul 5 22:21:13 2019 |
Koji | Update | SUS | Another M7.1 EQ | In fact, ETMX was not stuck until the M7.1
EQ today. After that it got stuck, but during
the after shocks, all the OSEMs occasionally |
|
|
14731
|
Sun Jul 7 17:54:34 2019 |
Milind | Update | Computer Scripts / Programs | PMC autolocker | I modified the autolocker code I wrote
to read from a .yaml configuration file instead
of commandline arguements (that option still |
|
|
14732
|
Sun Jul 7 21:59:28 2019 |
Kruthi | Update | Cameras | Ghost image due to beamsplitter | The beam splitter (BS1-1064-33-2037-45S) that
is currently being used has an antireflection
coating on the second surface and a wedge |
|
|
14733
|
Mon Jul 8 17:33:10 2019 |
Kruthi | Update | Loss Measurement | Optical scattering measurements | I came across a paper (see reference) where
they have used DAOPHOT, an astronomical software
tool developed by NOAO, to study the point |
|
|
14734
|
Mon Jul 8 17:52:30 2019 |
Milind | Update | Cameras | Convolutional neural networks for beam tracking | After the two earthquakes, I collected
some data by dithering the optic and recording
the QPD readings. Today, I set up scripts |
|
|
14735
|
Mon Jul 8 21:42:39 2019 |
rana | Update | Cameras | Ghost image due to beamsplitter | you have to use a BS with a larger
wedge angle (5 arcmin ~ 1 mrad) so that
the beams don't overlap on the camera |
|
|
14737
|
Tue Jul 9 10:37:42 2019 |
Milind | Update | IOO | keyed psl crate, unstick.py, pmc autolocker code- working | Today, Gautam keyed the C1PSL crate and
we got to test my unstick.py code. It seems
to be working fine. Remarks: |
|
|
14738
|
Tue Jul 9 18:06:05 2019 |
gautam | Update | LSC | Y-arm ASS in a workable state | The Y-arm ASS was tuned to be in a workable
state. Basically, I followed Koji's recipe. |
|
|
14739
|
Tue Jul 9 18:17:48 2019 |
gautam | Update | General | Projector lightbulb blown out | Last documented
replacement in Nov 2018, so ~7 months, which
I believe is par for the course. I am disconnecting |
|
|
14740
|
Tue Jul 9 18:42:15 2019 |
gautam | Update | ALS | EX green doubling oven temperature controller power was disconnected | There was no green light even though the
EX NPRO was on. I checked the doubling oven
temperature controller and found that its |
|
|
14741
|
Tue Jul 9 22:13:26 2019 |
Milind | Update | Cameras | Convolutional neural networks for beam tracking | I received access today. After some incredible
hassle, I was able to set up my repository
and code on the remote system. Following |
|
|
14742
|
Wed Jul 10 10:04:09 2019 |
gautam | Update | SUS | Tip-Tilt moved from South clean cabinet to bake lab cleanroom | Arnaud and I moved one of the two spare
TT suspensions from the south clean cabinet
to the bake lab clean room. The main purpose |
|
|
14743
|
Wed Jul 10 14:55:32 2019 |
Koji | Update | General | Projector lightbulb blown out | In fact the projector is still working.
The lamp timer showed ~8200hrs. I just reset
the timer, but not sure it was the cause |
|
|
14745
|
Wed Jul 10 16:53:22 2019 |
gautam | Update | SUS | PRM watchdog condition modified | [koji, gautam]
We noticed that the PRM watchdog
was tripping frequently. This is a period |
|
|
14746
|
Wed Jul 10 22:32:38 2019 |
Milind | Update | Cameras | Convolutional neural networks for beam tracking | I trained a bunch (around 25 or so - to
tune hyperparameters) of networks today.
They were all CNNs. They all produced garbage. |
|
|
14752
|
Thu Jul 11 16:22:54 2019 |
Kruthi | Update | General | Projector lightbulb blown out | I heard a popping sound in the control
room; the projector lightbulb has blown out. |
|
|
14753
|
Thu Jul 11 17:58:38 2019 |
gautam | Update | Equipment loan | TT suspension --> Downs | Arnaud has taken 1 TT suspension from the
40m clean lab to Downs for modal testing.
Estimated time of return is tomorrow evening. |
|
|
14755
|
Fri Jul 12 07:37:48 2019 |
gautam | Update | SUS | M4.9 EQ in Ridgecrest | All suspension watchdogs were tripped ~90mins
ago. I restored the damping. IMC is locked. |
|
|
14756
|
Fri Jul 12 18:54:47 2019 |
Koji | Update | General | Item loan: optical chopper from Cryo Lab | Optical chopper borrowed from CryoLab to
40m
https://nodus.ligo.caltech.edu:8081/Cryo_Lab/2458 |
|
|
14757
|
Sun Jul 14 00:24:29 2019 |
Kruthi | Update | Cameras | CCD Calibration | On Friday, I took images for different
power outputs of LED. I calculated the calibration
factor as explained in my previous |
|
|
14758
|
Mon Jul 15 03:15:24 2019 |
Kruthi | Update | Loss Measurement | Imaging scatterometer | On Friday, Koji helped me find various
components required for the scatterometer
setup. Like he suggested, I'll first |
|
|
14759
|
Mon Jul 15 03:30:47 2019 |
Kruthi | Update | Calibration-Repair | White paper as a Lambertian scatterer | I made some rough measurements, using the
setup I had used for CCD calibration, to
get an idea of how good of a Lambertian scatterer |
|
|
14760
|
Mon Jul 15 14:09:07 2019 |
Milind | Update | Cameras | CNN LSTM for beam tracking | I've set up network with a CNN encoder
(front end) feeding into a single LSTM cell
followed by the output layer (see attachment |
|
|
14761
|
Mon Jul 15 14:53:40 2019 |
Milind | Update | IOO | keyed psl crate, unstick.py | Mode cleaner was not locked today. Koji
came in and concluded that PSL had died.
So we keyed it. Then we ran my unstick.py |
|
|
14762
|
Mon Jul 15 18:55:05 2019 |
gautam | Update | IOO | Megatron hard-rebooted | [koji, gautam]
In addition to c1psl needing a
reboot, megatron was un-ssh-able (although |
|
|
14763
|
Tue Jul 16 15:00:03 2019 |
gautam | Update | SUS | Multiple small EQs | There were several small/medium
earthquakes in Ridgecrest and one medium |
|
|
14765
|
Tue Jul 16 16:00:01 2019 |
gautam | Update | CDS | c1iscaux Supermicro setup | I worked on preparing for the c1iscaux
upgrade a bit today.
|
|
|
14766
|
Wed Jul 17 03:05:01 2019 |
Kruthi | Update | ASS | MC spot position measurement scripts | [Kruthi, Gautam, Rana]
Gautam installed Atom text editor on Pianosa
yesterday. |
|
|
14768
|
Wed Jul 17 20:12:26 2019 |
Kruthi | Update | Cameras | Another GigE in place of analog camera | I've taken the MC2 analog |
|
|
14769
|
Wed Jul 17 21:22:41 2019 |
gautam | Update | CDS | CM board Latch Enable subtlety | [koji, gautam]
Koji pointed out an important subtlety
pertaining to the "LATCH ENABLE" |
|
|
14771
|
Thu Jul 18 10:46:04 2019 |
gautam | Update | CDS | Database files made | I completed the translation of the .db
files for the EPICS database records from
the VME notation to the Acromag/Modbus/Asyn |
|