ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
11474
|
Sat Aug 1 17:04:29 2015 |
Eve | Update | Summary Pages | States and Triggers in SPs | I've added states to the summary pages
to only show data for times at which one
certain channel is above a specified threshold. |
|
|
11475
|
Sat Aug 1 20:46:29 2015 |
Koji | Update | PEM | X seismo station short cable removed | OMG |
|
|
11476
|
Mon Aug 3 08:16:19 2015 |
Steve | Update | SUS | ETMX damping restored | |
|
|
11477
|
Mon Aug 3 18:19:09 2015 |
Jessica | Update | General | Anodization of front panels accounted for | Previously, I had gotten the same results
for the conductive and the isolated front
panels. Today, I sanded off the anodized |
|
|
11478
|
Tue Aug 4 03:02:30 2015 |
ericq | Update | LSC | Beat note Alignment fluctuation effects measured | Notes from tonight's work:
PMC alignment tweaked.
Not much gained
WFS/MC2 offsets |
|
|
11479
|
Wed Aug 5 10:56:07 2015 |
ericq | Update | CDS | Many models crashed | Last night around 1AM, many of the the
frontend models crashed due to an ADC timeout.
(But none of the IOPs, and all the c1lsc |
|
|
11480
|
Wed Aug 5 17:15:08 2015 |
Eve | Update | Summary Pages | Fixed ASC Tab | I've fixed the ASC
tab on the summary pages to populate
the graphs with data without causing an error. |
|
|
11481
|
Thu Aug 6 01:38:19 2015 |
ericq | Update | Computer Scripts / Programs | Chiara gets new Ethernet card | Since Chiara's onboard ethernet card
has a reputation to be flaky in Linux, Koji
suggested we could just buy a new ethernet |
|
|
11482
|
Thu Aug 6 04:36:41 2015 |
ericq | Update | ASC | Reviving PRC angular feedforward | Tonight, I've taken a bunch of data
where the PRC is carrier locked and the ITM
oplevs have the DC coupling FM turned on, |
|
|
11483
|
Thu Aug 6 09:16:57 2015 |
Steve | Update | VAC | Chiara gets new Ethernet card |
Yesterday we did put the vacuum
system into
|
|
|
11484
|
Thu Aug 6 11:45:01 2015 |
Jessica | Update | General | ALS Delay Line front panel testing | Koji had suggested that I sync up the two
function generators to ensure that they have
the same base frequency and so that crosstalk |
|
|
11485
|
Thu Aug 6 21:03:45 2015 |
Ignacio | HowTo | WienerFiltering | How to do online static IIR Wiener filtering | In order to do online static IIR Wiener
filtering one needs to do the following,
1) Get data for FIR Wiener filter |
|
|
11486
|
Mon Aug 10 11:57:45 2015 |
ericq | Update | General | IMC work |
|
|
|
11487
|
Mon Aug 10 15:25:05 2015 |
Steve | Update | PEM | wasp nest | The wasp nest will be removed tomorrow
from from the out side of the east arm window.
The resonant frequency of the newly |
|
|
11488
|
Mon Aug 10 22:18:19 2015 |
Ignacio | Update | IOO | Ready to do some online mode cleaner subtraction | I'm attaching a SISO IIR Wiener filter
here for reference purposes that will go
online either tonight or tomorrow evening. |
|
|
11489
|
Tue Aug 11 02:26:46 2015 |
ericq | Update | ASC | PRC Angular FF Lives! | PRC
Angular FF is back in action!
Short
and sweet of it: |
|
|
11490
|
Tue Aug 11 02:40:29 2015 |
ericq | Update | LSC | 50m delay lines - Rough calibrations | Jessica will soon ELOG about some measurements
suggesting that the conductive connector-ized
ALS delay line enclosure is the way to go, |
|
|
11491
|
Tue Aug 11 10:13:32 2015 |
Jessica | Update | General | Conductive SMAs seem to work best | After testing both the Conductive and Isolated
front panels on the ALS delay line box using
the actual beatbox and comparing this to |
|
|
11492
|
Tue Aug 11 11:30:19 2015 |
Ignacio | Update | IOO | SISO (T240-X) FF of MCL | Last night we finally got some online subtraction
going. The filter used is described in the
post this eLOG is @eLOG |
|
|
11493
|
Tue Aug 11 11:56:36 2015 |
Ignacio, Jessica | Update | PEM | Wasps obliterated maybe... | The wasp terminator came in today. He obliterated
the known wasp nest.
|
|
|
11494
|
Tue Aug 11 16:13:28 2015 |
Eve | Update | General | Gaussianity tests | I’m working on a code to determine
the Gaussianity of a PSD.
|
|
|
11495
|
Tue Aug 11 18:43:42 2015 |
Jessica | Update | IOO | MCL Online Subtraction | Today I finished fitting the transfer function
to a vectfit model for seismometers T240_X
and T240_Y, and then used these to filter |
|
|
11496
|
Wed Aug 12 01:32:18 2015 |
Ignacio | Update | IOO | Improved SISO (T240-X) FF of MCL | In my previous elog:11492,
I stated that in order to improve the subtraction |
|
|
11497
|
Wed Aug 12 11:44:13 2015 |
ericq | Update | PEM | Gur2 Channels still wonky | In previous elogs, we saw that the X and
Y spectra out of GUR2 (X end Guralp seismometer)
looked strange (i.e. inconsistent with the |
|
|
11498
|
Wed Aug 12 14:35:46 2015 |
ericq | Update | Computer Scripts / Programs | PDFs in ELOG | I've tweaked the ELOG code to allow
uploading of PDFs by drag-and-drop into
the main editor window. Once again we can |
|
|
11499
|
Wed Aug 12 16:39:46 2015 |
Ignacio | Update | IOO | MISO WIener (T240-X and T240-Y) FF of MCL | Last night I performed some MISO FF on
MCL using the T240-X and T240-Y as witnesses.
Here are the results: |
6x |
|
11500
|
Wed Aug 12 16:48:26 2015 |
Ignacio | Update | IOO | Better? Nope. MISO WIener (T240-X and T240-Y) FF of MCL | Last night, I also worked on a "better"
(an improvement, I thought) of the MISO Wiener
filter (T240-X and T240-Y witnesses) IIR |
6x |
|
11501
|
Wed Aug 12 22:33:36 2015 |
Ignacio | Update | IOO | Re-measured MC2 -> MCL TF | Since I will need to do transfer function
measurements in order to implement FF for
the arms and the MC2's yaw and pitch |
|
|
11502
|
Thu Aug 13 12:06:39 2015 |
Jessica | Summary | IOO | Better predicted subtraction did not work as well Online | Yesterday I adjusted the preweighting of
my IIR fit to the transfer function of MC2,
and also managed to reduce the number of |
6x |
|
11503
|
Thu Aug 13 20:32:07 2015 |
Ignacio | Update | LSC | Working towards YARM FF | The
mode cleaner FF static filtering is by no
means done. More work has to be done |
|
|
11504
|
Thu Aug 13 23:57:33 2015 |
Ignacio | Update | LSC | YARM coherence plots | I took data
from 1123495750 to 1123498750 GPS
time (Aug 13 at 3AM, 50 mins of data) for |
|
|
11505
|
Fri Aug 14 09:07:45 2015 |
Steve | Update | PEM | Gur interface box is wonky | Atm1, Before cable swap
Atm2, The long cables were swapped
at the input of the interface box. |
|
|
11506
|
Fri Aug 14 12:10:08 2015 |
Koji | Update | PEM | Gur interface box is wonky | Let's dismantle the I/F unit from the
rack and connect the cable with the lid open.
We need to trace the signal. |
|
|
11507
|
Fri Aug 14 17:20:01 2015 |
Jenne | Update | PEM | Gur interface box is wonky | IIRC, the Guralp box's 3rd set of channels
do not have all of the modifications that
were made on channels 1 and 2. |
|
|
11508
|
Fri Aug 14 21:40:26 2015 |
Ignacio | Update | LSC | Quick static offline subtractions of YARM | Plotte below
are the resultant subtractions for YARM using
different witness configurations, |
|
|
11509
|
Fri Aug 14 23:49:34 2015 |
Koji | Summary | General | B&K Shaker fixed | I fixed a shaker that was claimed to be
broken. I had to cut the rubber membrane
to open the head. |
|
|
11510
|
Sat Aug 15 02:10:35 2015 |
Ignacio | Update | LSC | MCL FF => YARM FF | In my last
post I calculated the different subtractions
(offline) that could be done to YARM alone |
|
|
11511
|
Sun Aug 16 23:26:40 2015 |
Eve | Update | General | Gaussianity tests | I've continued to work on my Gaussianity
tests for S5 L1 data.
Following the statistical measure |
|
|
11512
|
Mon Aug 17 17:48:12 2015 |
Koji | Update | PEM | Wasps obliterated maybe... | We found the same wasp in the 40m. Megan
found it walking behind Steve desk! |
|
|
11513
|
Tue Aug 18 03:56:09 2015 |
ericq | Update | LSC | locking efforts | Now that the updated ALS is stable, and
the PRC angular FF is revived, I've been
working on relocking PRFPMI. While the RMS |
|
|
11514
|
Tue Aug 18 11:16:17 2015 |
Steve | Update | PEM | Gur interface box is wonky | The Guralp ADC interface box
D060506 is ready for inspection. It is in
front of 1X1 with open top and running. |
|
|
11515
|
Wed Aug 19 00:55:35 2015 |
Ignacio | Update | LSC | LSC-YARM-EXC to LSC-YARM-IN1 TF measurement + error analysis | Yesterday,
Rana, Jessica and I measured the Transfer
function from LSC-YARM-EXC to LSC-YARM-IN1. |
|
|
11516
|
Wed Aug 19 01:45:10 2015 |
Ignacio | Update | IOO | Doubly Improved SISO (T240-X) FF of MCL | Today I tried
and doubly-improved SISO FF filter on MCL.
This filter has a stronger rolloff than the |
6x |
|
11517
|
Wed Aug 19 07:58:25 2015 |
Steve | Update | PEM | Gur interface box | Koji and Steve,
We took transferfunctions of each
channel yesterday. They were |
|
|
11518
|
Thu Aug 20 02:31:09 2015 |
ericq | Update | LSC | PRFPMI is back | PRFPMI
locking has been revived.
I've
had 6 5min+ locks so far; arm powers usually |
|
|
11519
|
Thu Aug 20 11:09:10 2015 |
rana | Update | IOO | some points about seismic FF |
When plotting the subtraction performance,
we mainly care about the 0.5 - 10 Hz band,
so we care about the RMS in this band. Don't |
|
|
11520
|
Thu Aug 20 11:31:55 2015 |
Koji | Update | PEM | Gur interface box | As reported previously, the transfer functions
of the channels look fine. (i.e. All channels
almost identical.) |
|
|
11521
|
Thu Aug 20 18:08:28 2015 |
Ignacio | Frogs | 40m upgrading | Fatality. Something broke. |
So |
|
|
11522
|
Fri Aug 21 08:38:37 2015 |
Steve | Update | IOO | PMC locked | PMC needed to be locked manually. |
|
|
11523
|
Fri Aug 21 17:15:13 2015 |
Steve | Update | PEM | Gur interface box |
|
|