| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
14778
|
Fri Jul 19 15:54:47 2019 |
gautam | Update | General | Control room UPS Batteries need replacement | The control room UPS started making a beeping
noise saying batteries need replacement.
I hit the "Test" button and the |
|
|
14777
|
Fri Jul 19 15:51:55 2019 |
gautam | Update | General | Projector lightbulb blown out | [chub, gautam]
Bulb replaced. Projector is back
on. |
|
|
14776
|
Fri Jul 19 12:50:10 2019 |
gautam | Update | SUS | DC bias actuation options for SOS | Rana and I talked about some (genius)
options for the large range DC bias actuation |
|
|
14775
|
Thu Jul 18 22:34:40 2019 |
Koji | Summary | CDS | iscaux electronics modifications | The whitening filter modules have been
restored to the crates. The SMA cables have
been restored and fastened by a spanner. |
|
|
14774
|
Thu Jul 18 22:03:00 2019 |
Kruthi | Update | Cameras | MC2 and cameras | [Kruthi, Yehonathan, Gautam]
Today evening, Yehonathan and I
aligned the MC2 cameras. As of now there |
|
|
14773
|
Thu Jul 18 19:58:56 2019 |
gautam | Update | CDS | Work on Acromag chassis | Now that the .db files were prepared, I
wanted to test for errors. So I did the following:
Acromags were mounted on |
|
|
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 |
|
|
14770
|
Thu Jul 18 00:51:52 2019 |
Koji | Summary | CDS | iscaux electronics modifications | Along with the plan in ELOG
14744, the ISC PD interface and the whitening
filter board have been modificed. The ISC |
|
|
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" |
|
|
14768
|
Wed Jul 17 20:12:26 2019 |
Kruthi | Update | Cameras | Another GigE in place of analog camera | I've taken the MC2 analog |
|
|
14767
|
Wed Jul 17 17:56:18 2019 |
Koji | Configuration | Computers | Gave resolv.conf to giada | Kruthi noticed that she could not login
to rossa from giada.
I checked /etc/resolv.conf and |
|
|
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. |
|
|
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.
|
|
|
14764
|
Tue Jul 16 15:17:57 2019 |
Koji | HowTo | CDS | Final bit bug of the BIO CDS module | Yutaro talked about the BIO bug in KAGRA
elog. http://klog.icrr.u-tokyo.ac.jp/osl/?r=9536
I think I made the similar change |
|
|
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 |
|
|
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 |
|
|
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 |
|
|
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 |
|
|
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 |
|
|
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 |
|
|
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 |
|
|
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 |
|
|
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. |
|
|
14754
|
Thu Jul 11 18:15:22 2019 |
gautam | Summary | Electronics | PSL/IOO rack checkout | I looked at the PSL/IOO racks to check
for which boards, if any, require an additional
P2 interface, so that we can try and design |
|
|
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. |
|
|
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. |
|
|
14750
|
Thu Jul 11 13:09:22 2019 |
gautam | Summary | CDS | P2 interface board | it will connect to a 15 pin breakout board
in the Acromag chassis
|
|
|
14749
|
Thu Jul 11 13:08:36 2019 |
Chub | Summary | CDS | P2 interface board | It's nice and compact, and the cost
of new 15-pin DSUB cables shouldn't be
a factor here. What does the 15p cable |
|
|
14747
|
Thu Jul 11 12:42:35 2019 |
gautam | Summary | CDS | P2 interface board | I looked into the design of the P2 interface
board. The main difficulty here is geometric
- we have to somehow accommodate sufficient |
|
|
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. |
|
|
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 |
|
|
14744
|
Wed Jul 10 14:57:01 2019 |
Koji | Summary | CDS | Channel recipe for iscaux upgrade | The list of the iscaux channels
and pin assignments were posted to google
drive. |
|
|
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 |
|
|
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 |
|
|
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 |
|
|
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 |
|
|
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 |
|
|
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. |
|
|
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: |
|
|
14736
|
Tue Jul 9 08:33:31 2019 |
gautam | Summary | SUS | ETMX PIT bias voltage changed by ~1V | After this activity, the DC bias voltage
required on ETMX to restore good X arm cavity
alignment has changed by ~1.3 V. Assuming |
|
|
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 |
|
|
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 |
|
|
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 |
|
|
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 |
|
|
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 |
|
|
14730
|
Fri Jul 5 23:28:52 2019 |
rana, kruthi | Summary | SUS | ETMX unstuck by shaking the stack | We unstuck ETMX by shaking the stack. Most
effective was to apply large periodic human
sized force to the north STACIS mounts. |
|
|
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 |
|
|
14728
|
Fri Jul 5 21:53:10 2019 |
Koji | Update | SUS | Another M7.1 EQ | - ITM
unstuck now
- IMC briefly locked at TEM00 |
|
|
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 |
|
|
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 |
|