| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
11013
|
Thu Feb 12 12:16:04 2015 |
manasa | Update | General | Fiber shielding | [Steve, Manasa]
The fibers around the PSL table
were shielded to avoid any tampering. |
|
|
20
|
Fri Oct 26 21:48:40 2007 |
waldman | Configuration | OMC | Fiber to 056 | I set up a 700 mW NPRO in Rana's lab and launched
it onto a 50m fiber. I got a few mW onto
the fiber, enough to see with a card before |
|
|
3594
|
Wed Sep 22 16:35:45 2010 |
josephb | Update | CDS | Fibers pulled, new FB install tomorrow | [Aidan, Tara, Joe]
We pulled out what used to be the
LSC/ASC fiber from the 1Y3 arm rack, and |
|
|
13753
|
Fri Apr 13 17:56:26 2018 |
gautam | Update | ALS | Fibers switched out | I swapped the EX fiber for the PSL fiber
in the polarization monitoring setup. There
is a lot more power in this fiber, and one |
|
|
13754
|
Sat Apr 14 14:42:09 2018 |
gautam | Update | ALS | Fibers switched out | It looks like the drift in polarization
content in the PSL pickoff is actually much
higher than that in the EX pickoff. Note |
|
|
13757
|
Tue Apr 17 14:08:29 2018 |
gautam | Update | ALS | Fibers switched out | A follow-up on the discussion from today's
lunch meeting - Rana pointed out that rotation
of the fiber in the mount by ~5degrees cannot |
|
|
13773
|
Fri Apr 20 00:26:34 2018 |
gautam | Update | ALS | Fibers switched out | Summary:
|
|
|
4882
|
Sat Jun 25 00:00:28 2011 |
Sonali | Update | Green Locking | Fibre Coupling. | What I did today.
1. I tried to align the IR input
beam by aligning the two mirrors, to couple |
|
|
3859
|
Thu Nov 4 03:13:46 2010 |
Suresh | Update | Locking | Fibre coupling 1064nm light at the south-end table | [Kiwamu,
Suresh]
We |
|
|
3865
|
Thu Nov 4 19:00:57 2010 |
Suresh | Update | Locking | Fibre coupling 1064nm light at the south-end table | The Fluke
Visual Fault locator (Visifault) arrived
and I used it to couple 1064nm light into |
|
|
8183
|
Wed Feb 27 14:39:59 2013 |
Annalisa | Update | LSC | Fibre laid for RFPD audio | [Annalisa, Jenne, Rana, Steve]
We installed the fibres on cable
trays the 1Y2 and the Control Room. |
|
|
315
|
Wed Feb 13 20:37:11 2008 |
John | Update | LSC | Fibre locking - Fiber | Sam and I observed fringes in the light reflected
from the Y arm. These fringes are due to
the sidebands and not the carrier. To improve |
|
|
272
|
Sat Jan 26 02:08:53 2008 |
John | Omnistructure | LSC | Fibres | There is now a fibre running from the SP table
to the ISCT at the Y-end. In the coming days
I will try to mode match the beam from this |
|
|
296
|
Mon Feb 4 22:01:57 2008 |
John | Summary | LSC | Fibres auxiliary locking - Fibers | I managed to couple ~75% of the light transmitted
from the y arm, through the fibre, back to
the SP table. I hoped that this would be |
|
|
10860
|
Wed Jan 7 02:54:09 2015 |
Jenne | Update | LSC | Fiddling with DARM filters | One of the things that we had talked about
last night was the totally tiny amount of
phase margin that we have in the CARM and |
|
|
14703
|
Wed Jun 26 20:45:03 2019 |
gautam | Update | Cameras | Field of view options | For the beam spot position tracking, I
am wondering if there is any benefit to going
for a wider field of view and getting the |
|
|
10474
|
Tue Sep 9 00:34:34 2014 |
Jenne | Update | LSC | Figuring out where to do DARM->AS55 | This afternoon, after Q and Manasa finished
recovering from the activities of the morning,
I aligned the IFO, and went to the Yend to |
|
|
10478
|
Tue Sep 9 14:25:46 2014 |
jamie | Update | LSC | Figuring out where to do DARM->AS55 |
|
|
|
5128
|
Fri Aug 5 20:44:26 2011 |
jamie | Metaphysics | Treasure | Film crew here Monday morning | Just a reminder that a film crew will
be here Monday morning, filming Christian
Ott for some Discovery channel show. |
|
|
7092
|
Mon Aug 6 17:15:15 2012 |
Jenne | Update | ASS | Filter banks not working | I was trying to load some filters into
the ASS so that I can try it out, but for
some reason the filter banks aren't working |
|
|
7099
|
Tue Aug 7 00:22:10 2012 |
Jenne | Update | ASS | Filter banks working |
|
|
|
5730
|
Mon Oct 24 19:48:16 2011 |
Mirko | Update | Adaptive Filtering | Filter execution time | Toyed around some more with the adaptive
filters.
Execution time:
nTaps |
|
|
3802
|
Thu Oct 28 02:01:51 2010 |
Kevin | Update | PSL | Filter for 2W Laser | [Rana and Kevin]
I made a low pass filter for the
piezo driver for the 2W laser that is now |
|
|
3707
|
Wed Oct 13 17:12:33 2010 |
josephb, yuta | Update | CDS | Filter name length problem found and fixed | The missing filter files for ULPOS, URPOS,
and so forth for the mode cleaner optics
was due to the length of the names of the |
|
|
995
|
Fri Sep 26 00:19:54 2008 |
Jenne | Update | PSL | Filter-action with the PMC | Written, but not posted on 24Sept2008:
|
|
|
522
|
Fri Jun 6 11:19:13 2008 |
Caryn | Summary | PEM | Filtering MC_L and MC_F with PEM:ACC and microphone | Tried to filter MC_L and MC_F with acc/seis
data and microphone data using wiener filter
(levinson)
|
8x |
|
6049
|
Wed Nov 30 02:04:26 2011 |
rana, den, jenne, kiwamu, jzweizig | Update | CDS | Filtering Noise issue tracked down ??? | You can read through all of our past
tests to see what didn't work in tracking
things down. As Den mentions, there was actually |
|
|
6051
|
Wed Nov 30 11:04:26 2011 |
josephb | Update | CDS | Filtering Noise issue tracked down ??? |
|
|
|
6052
|
Wed Nov 30 11:36:12 2011 |
Den | Update | CDS | Filtering Noise issue tracked down ??? |
|
|
|
7074
|
Wed Aug 1 22:37:21 2012 |
Jenne | Update | ASS | Filters installed in the ASS | As part of trying to figure out what is
going on with the ASS, I wanted to figure
out what filters are installed on which lockins. |
|
|
11590
|
Thu Sep 10 09:37:34 2015 |
Ignacio | Summary | IOO | Filters left on MCL static module | The following MCL filters
were left loaded in the T240-X and T240-Y |
|
|
10239
|
Fri Jul 18 19:32:50 2014 |
Akhil | Summary | Electronics | Filters used inside the Frequency Counter |
Thanks Koji , for your hint
for the brain teasing puzzle. I was looking |
|
|
10246
|
Mon Jul 21 12:16:27 2014 |
Akhil | Summary | Electronics | Filters used inside the Frequency Counter | The expected bode plots for such
a filter with L= 4 is attached and compared |
|
|
3437
|
Wed Aug 18 19:19:38 2010 |
Jenne | Update | SUS | Final 2 TTs suspended! | [Jenne, Yoichi]
The final 2 Tip Tilts (#1 and #5)
have been suspended. We have designated |
|
|
8113
|
Wed Feb 20 01:40:37 2013 |
Manasa | Update | Alignment | Final IFO alignment- in progress | [Yuta, Sendhil, Jamie, Jenne, Rana]
1. After the MC centering, we tried |
|
|
8338
|
Mon Mar 25 16:51:43 2013 |
Chloe | Update | | Final QPD Circuit Design | This is the final version of the QPD circuit
I'm going to build. After playing around
with the spatial arrangement, this should |
|
|
11535
|
Fri Aug 28 00:59:55 2015 |
Ignacio | Update | IOO | Final SISO FF Wiener Filter for MCL | This is my
final |
|
|
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 |
|
|
14890
|
Tue Sep 17 14:43:59 2019 |
gautam | HowTo | CDS | Final bit bug of the BIO CDS module | Came across this while looking up the BIO
situation at 1Y2. For reference, the fix
Koji mentions can be seen in the attached |
|
|
14941
|
Fri Oct 4 22:22:03 2019 |
gautam | Update | CDS | Final incarnation of latch.py | [KA, GV]
This elog is meant to be a summary
of some of the many subtleties |
|
|
14947
|
Tue Oct 8 03:19:14 2019 |
Koji | Update | CDS | Final incarnation of latch.py | Now with the CM board tested with the signal
injected, it turned out that the latch logic
was flipped. As the default state locked |
|
|
941
|
Thu Sep 11 11:29:14 2008 |
josephb | Configuration | Computers | Final netgear switch in place in 1Y2 | I've placed the final (of 4) Netgear prosafe
24 port switch at the very top of 1Y2. At
that location, there are no holes left to |
|
|
8961
|
Fri Aug 2 21:59:36 2013 |
Charles | Update | ISS | Finalized ISS Schematic (hopefully) | Attached is the finalized schematic. The
general circuit topology should remain the
same from this point forward, although individual |
|
|
16988
|
Mon Jul 11 19:29:23 2022 |
Paco | Summary | General | Finalizing recovery -- timing issues, cds, MC1 | [Yuta, Koji, Paco]
Restarting
CDS
We were having |
|
|
2983
|
Tue May 25 16:40:27 2010 |
josephb, alex | Update | CDS | Finally tracked down why new models wouldn't talk to each other | The problem with the new models using the
new shared memory/dolphin/RFM defined as
names in a single .ipc file. |
|
|
17006
|
Fri Jul 15 16:20:16 2022 |
Cici Hanna | Update | General | Finding UGF | I have temporarily abandoned vectfit and
aaa since I've been pretty unsuccessful
with them and I don't need poles/zeroes |
|
|
16993
|
Tue Jul 12 18:35:31 2022 |
Cici Hanna | Summary | General | Finding Zeros/Poles With Vectfit | Am still working on using vectfit to find
my zeros/poles of a transfer function - now
have a more specific project in mind, which |
|
|
8322
|
Thu Mar 21 09:53:46 2013 |
Annalisa | Update | Locking | Finding the beat note | Yesterday I tried to find the beat
note between the main PSL and the auxiliary
NPRO, but I didn't :( |
|
|
8323
|
Thu Mar 21 10:19:28 2013 |
Koji | Update | Locking | Finding the beat note | Give us more info on the elog:
What PD are you using? How much power |
|
|
8327
|
Thu Mar 21 13:11:42 2013 |
Annalisa | Update | Locking | Finding the beat note |
|
|