| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
11542
|
Sun Aug 30 00:03:13 2015 |
rana | Update | IOO | MCL Wiener Feedforward Final Results | Somehow it seems like the ELOG makes all
of the thumbnails way too big by default.
Did we get some sneaky upgrade recently? |
|
|
11541
|
Sat Aug 29 04:53:24 2015 |
Ignacio | Update | IOO | MCL Wiener Feedforward Final Results | After fighting
relentlessly with the mode cleaner, I believe
I have achieved |
6x |
|
11540
|
Fri Aug 28 20:20:26 2015 |
rana | Update | PEM | Gur interface box cable | To help find out if Steve really melted
the inside of our precious seismometer, lets
hook it up using the handheld seismo wand |
|
|
11539
|
Fri Aug 28 20:15:49 2015 |
rana | Update | IOO | MC2 -> MCL Actuator TF |
|
|
|
11538
|
Fri Aug 28 19:05:53 2015 |
rana | Update | IOO | IMC Tweak | Well, green looks better than blue, but
it makes the PCDRIVE go high, which means
its starting to saturate the EOM drive. So |
|
|
11537
|
Fri Aug 28 17:04:12 2015 |
Steve | Update | PEM | Gur interface box cable | Ara! Onara suru tsu-mori |
|
|
11536
|
Fri Aug 28 02:20:35 2015 |
Ignacio | Update | LSC | PRFPMI and MCL FF | A day late
but here it is.
Eric |
|
|
11535
|
Fri Aug 28 00:59:55 2015 |
Ignacio | Update | IOO | Final SISO FF Wiener Filter for MCL | This is my
final |
|
|
11534
|
Thu Aug 27 04:23:04 2015 |
ericq | Update | LSC | PRFPMI is back | Got to a 40 minute lock tonight. All other
locks broke because of me poking something.
I redid some sensing excitations, |
|
|
11533
|
Thu Aug 27 02:09:14 2015 |
ericq | Update | LSC | AUX X Laser Current Changed | I spent some time tonight chasing down
the cause of huge RIN in the X green PDH
transmitted light, which I had started seeing |
|
|
11532
|
Thu Aug 27 01:41:41 2015 |
Ignacio | Update | IOO | Triply Improved SISO (T240-X) FF of MCL | |
|
|
11531
|
Tue Aug 25 16:39:06 2015 |
Steve | Update | safety | safety training | Alessandra Marrocchesi received 40m specific
basic safety training yesteday. |
|
|
11530
|
Tue Aug 25 16:33:31 2015 |
Ignacio, Steve | Configuration | PEM | Seismometer enclosure copper foil progress | Steve ordered
about two weeks ago a roll of 0.5 mm thick
copper foil to be used for the inside of |
|
|
11529
|
Tue Aug 25 16:09:54 2015 |
ericq | Update | IOO | IMC Tweak | A little more information about the IMC
loop tweak...
I increased the overall IMC loop |
|
|
11528
|
Tue Aug 25 04:15:51 2015 |
ericq | Update | LSC | PRFPMI is back | More PRFPMI locks tonight. Right now, it's
been locked for 22+ minutes, though with
the PRMI still on 3F signals. I think the |
|
|
11527
|
Mon Aug 24 16:46:49 2015 |
ericq | Update | SUS | ETMY Oplev laser power is falling | Repeated for all optics, ETMY seems like
the only one sharply dropping for now (PRM
is all over the place and hard to gauge, |
|
|
11526
|
Mon Aug 24 16:10:07 2015 |
ericq | Update | SUS | ETMY Oplev laser power is falling | Today I noticed the box around the ETMY
oplev sum flashing red, as it dipped below
1k. I don't recall seeing this recently, |
|
|
11525
|
Mon Aug 24 14:05:47 2015 |
ericq | Update | SUS | EricG Investigating L2A | This afternoon, I showed Eric Gustafson
some of the basics of making swept sine measurements
with DTT. We turned off the f2a filters and |
|
|
11524
|
Sat Aug 22 15:48:32 2015 |
Koji | Summary | LSC | Arm locking recovery | As per Ignacio's request, I restored
the arm locking.
- MC WFS relief |
|
|
11523
|
Fri Aug 21 17:15:13 2015 |
Steve | Update | PEM | Gur interface box |
|
|
|
11522
|
Fri Aug 21 08:38:37 2015 |
Steve | Update | IOO | PMC locked | PMC needed to be locked manually. |
|
|
11521
|
Thu Aug 20 18:08:28 2015 |
Ignacio | Frogs | 40m upgrading | Fatality. Something broke. |
So |
|
|
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.) |
|
|
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 |
|
|
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 |
|
|
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 |
|
|
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 |
|
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. |
|
|
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. |
|
|
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 |
|
|
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! |
|
|
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 |
|
|
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 |
|
|
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. |
|
|
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, |
|
|
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. |
|
|
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. |
|
|
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. |
|
|
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 |
|
|
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 |
|
|
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 |
|
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 |
|
|
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 |
|
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 |
|
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 |
|
|
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 |
|
|
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 |
|
|
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 |
|
|
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.
|
|
|
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.
|
|