| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
2587
|
Wed Feb 10 23:15:37 2010 |
Koji | Update | Electronics | triple resonant EOM ---- preliminary result | Hey, this looks nice, but can you provide
us the comparison of rad/V with the resonant
EOM of New Focus? |
|
|
2590
|
Thu Feb 11 16:52:53 2010 |
kiwamu | Update | Electronics | triple resonant EOM ---- preliminary result | The commercial resonant EOM of New Focus
has the modulation efficiency of |
|
|
5339
|
Sat Sep 3 14:47:50 2011 |
kiwamu | Update | IOO | triple resonant box : brief estimations about reflections and mode. depths | (RF reflections)
The reflected RF power going back
to the RF generation box will be : |
|
|
5335
|
Fri Sep 2 13:12:08 2011 |
kiwamu | Update | IOO | triple resonant box : ready to install | The triple
resonant box was checked again. Each resonant |
|
|
5336
|
Fri Sep 2 15:56:32 2011 |
Koji | Update | IOO | triple resonant box : ready to install | What are the reflected RF powers for those
frequencies?
Is the 29.5MHz more problem than the |
|
|
2523
|
Mon Jan 18 23:44:19 2010 |
kiwamu | Update | Electronics | triple resonant circuit for EOM | The first
design of the triple resonant EOM circuit |
|
|
2524
|
Tue Jan 19 00:10:44 2010 |
rana | Update | Electronics | triple resonant circuit for EOM | Very cool. |
|
|
2526
|
Tue Jan 19 02:40:38 2010 |
Koji | Update | Electronics | triple resonant circuit for EOM | The design looks very good. I have some
questions.
1. As far as I remember, you've |
|
|
2527
|
Tue Jan 19 03:04:14 2010 |
Koji | Update | Electronics | triple resonant circuit for EOM | Self-follow:
I got the answer of Q3 from the follow-up
entry. |
|
|
3462
|
Tue Aug 24 11:23:32 2010 |
steve | Update | PEM | tripod leg installation completed | Bertine Robby, Bertin and Jerry completed
the installation by pouring concrete yesterday
and cleaning up today. |
7x |
|
241
|
Wed Jan 16 14:09:45 2008 |
rob | Update | LSC | tuesday's locking |
I got a little further with the locking (PRFPMI)
last night, after discovering that the cable |
|
|
1463
|
Thu Apr 9 12:23:49 2009 |
pete | Update | Locking | tuning ETM common mode | Pete, Yoichi
Last night, we put the IFO in FP
Michelson configuration. We took transfer |
|
|
13143
|
Tue Jul 25 14:04:06 2017 |
Steve | Update | VAC | turbo controller installed and we are running at vac normal | Gautam and Steve,
Spare Varian turbo-V 70 controller,
Model 969-9505, sn 21612 was swapped in. |
|
|
4461
|
Wed Mar 30 16:57:13 2011 |
kiwamu | Update | General | turned off c1aux | [Steve / Kiwamu]
As a part of the video cable
session, we reconnected some power cords |
|
|
2479
|
Tue Jan 5 13:23:45 2010 |
Alberto | Omnistructure | Environment | turning page | In the lab there are lots of old posters
with outdated autocad drawings, or printouts
with schematics of old electronics hanging |
|
|
7949
|
Mon Jan 28 21:32:38 2013 |
jamie | Update | Alignment | tweaking of alignment into half PRC | [Koji, Jamie]
We tweaked up the alignment of the
half PRC a bit. Koji started by looking |
|
|
2707
|
Wed Mar 24 04:22:51 2010 |
kiwamu, matt | Update | Green Locking | two NPRO PLL | Now some pedestals, mirrors and lenses
are left on the PSL table, since we are on
the middle way to construct a PLL setup which |
|
|
2710
|
Wed Mar 24 14:52:02 2010 |
Alberto | Update | Green Locking | two NPRO PLL |
|
|
|
6857
|
Fri Jun 22 20:00:14 2012 |
Jamie | Omnistructure | Electronics | two RG-405 cables ran from 1X2 rack to control room | [Yaakov, Eric, Jenne, Yuta]
Two of our surfs, Yaakov and Eric,
pulled two unused RG-405/SMA cables that |
|
|
4483
|
Fri Apr 1 23:49:24 2011 |
kiwamu | Summary | Green Locking | two states in green beat-note | According
to the measurement done by Aidan and me,
there are two beat-note state. |
|
|
10433
|
Wed Aug 27 18:03:47 2014 |
ericq | Update | Green Locking | uPDH Box Checkup | Quick post of plots and data; I'll
fill in more detail tonight.
TL;DR: I pulled both green PDH boxes |
|
|
10437
|
Thu Aug 28 17:34:20 2014 |
ericq | Update | Green Locking | uPDH Box Checkup | I had noticed in the past, that the digital
control signal monitor for the X end would
saturate well before the ADC should saturate |
|
|
10438
|
Fri Aug 29 17:28:07 2014 |
rana | Update | Green Locking | uPDH Box Checkup |
|
|
|
10439
|
Fri Aug 29 23:53:35 2014 |
ericq | Update | Green Locking | uPDH Box Checkup | I had pulled out both X and Y servo boxes
for inspection, put the Y box back, soldered
in a missing op amp power capacitor on the |
|
|
10441
|
Tue Sep 2 20:02:06 2014 |
ericq | Update | Green Locking | uPDH Box Checkup | I narrowed down the saturation point in
the X green PDH box to the preamp inside
the AD8336, but there is still no clear answer |
|
|
10443
|
Wed Sep 3 00:17:22 2014 |
rana | Update | Green Locking | uPDH Box Checkup | What monitor point is being plotted here?
Or is it a scope probe output?
If this saturation is in the uPDH-X |
|
|
10447
|
Wed Sep 3 20:38:40 2014 |
ericq | Update | Green Locking | uPDH Box Checkup | The traces were from the front panel output
BNCs, but the VGA preamp exhibited this asymmetric
saturation at its output. |
|
|
10426
|
Fri Aug 22 18:00:08 2014 |
jamie | Omnistructure | CDS | ubuntu12 awgstream installed | I installed awgstream-2.16.14 in /ligo/apps/ubuntu12.
As with all the ubuntu12 "packages",
you need to source the ubuntu12 ligoapps |
|
|
10177
|
Thu Jul 10 17:33:26 2014 |
jamie | Omnistructure | Computer Scripts / Programs | ubuntu12 software installed, gds 2.16.3.2 | Rana wanted the latest GDS installed (for
newest DTT), so I made an ubuntu 12 install
directory into which I installed |
|
|
9966
|
Fri May 16 20:55:18 2014 |
Jamie | Frogs | lore | un-full-screening Ubuntu windows with F11 | Last week Rana and I struggled to figure
out how to un-full-screen windows on the
Ubuntu workstations that appeared to be stuck |
|
|
11253
|
Sun Apr 26 01:10:18 2015 |
rana | Update | ASC | unBroken Xass? | Today I tried some things, but basically,
lowering the input gain by 10 made the thing
stable. In the attached screenshotstrip, |
|
|
11255
|
Sun Apr 26 15:05:35 2015 |
Jenne | Update | ASC | unBroken Xass? | Thank you both.
I have updated the .snap file,
so that it'll use these parameters, as |
|
|
6571
|
Thu Apr 26 09:22:17 2012 |
steve | Update | | under the east end optical table |
|
|
|
6282
|
Wed Feb 15 11:34:01 2012 |
steve | Update | | under the shouth end optical table | I added an U channel based bottom shelf
at the south end today. |
|
|
1654
|
Fri Jun 5 01:10:13 2009 |
rob, pete | Update | Locking | undermined | We were stymied early in the evening by
a surreptitiously placed, verbo-visually
obfuscated command in the drstep script. |
|
|
13171
|
Tue Aug 8 17:04:26 2017 |
Steve | Update | VAC | unintended pump down | IFO pressure 2 Torr, PSL
shutter closed. I'm pumping down
with 2 roughing pumps with ion pump gate |
|
|
13172
|
Tue Aug 8 17:44:11 2017 |
Steve | Update | VAC | unintended pump down | Pumpdown stopped for over night at
~ 1 Torr
The roughing line disconnected. |
|
|
13175
|
Wed Aug 9 11:59:51 2017 |
Steve | Update | VAC | unintended pump down at vacuum normal | pd80b has reached Vac Normal. IFO pressure
0.5 mTorr
We need our vauum channels back |
|
|
11429
|
Sat Jul 18 16:59:01 2015 |
jamie | Update | CDS | unloaded, turned off loading of, symmetricom kernel module on fb | fb has been loading a 'symmetricom'
kernel module, presumably because it was
once being used to help with timing. |
|
|
1585
|
Thu May 14 02:36:05 2009 |
pete | Update | Locking | unstable IFO | It seems that the MC3 problem is intermittent
(one-day trend attached). I tried to
take advantage of a "clean MC3" |
|
|
14805
|
Wed Jul 24 12:24:43 2019 |
Milind | Update | IOO | unstick.py and ifotest | Moved the unstick.py code to the ifotest
repository here.
It now handles signals like those generated |
|
|
1955
|
Thu Aug 27 12:34:48 2009 |
Yoichi | Update | Locking | up to arm power 70 | Last night, I tried to run locking scripts.
The power went up to 70 a couple of times
.
|
|
|
12358
|
Sun Jul 31 17:28:38 2016 |
rana | Omnistructure | General | upclean | I cleaned up the south Electronics bench
today.
The other two, as well as several |
|
|
6286
|
Thu Feb 16 04:29:30 2012 |
kiwamu | Update | LSC | upconversion noise from BS motion | Sometimes ago I reported that there
have been a kind of upconversion noise when
PRM was excited (#6211). |
|
|
3556
|
Fri Sep 10 02:35:30 2010 |
rana, kiwamu, valera, tara | Configuration | PSL | update | Over the last couple nights we got the
beam into the FSS path and all the way to
the IMC and out onto the AP table. |
|
|
3544
|
Wed Sep 8 11:46:53 2010 |
kiwamu | Update | PSL | update of the layout | I put some
green stuff on the layout drawing. |
|
|
6303
|
Wed Feb 22 01:53:57 2012 |
kiwamu | Update | LSC | update on glitch table | I
tried SRMI. The glitch rate wasn't as high
as that of PRMI but it happened once per |
|
|
6386
|
Thu Mar 8 04:13:12 2012 |
kiwamu | Update | LSC | update on the locking activity | [Keiko / Kiwamu]
Some updates on the locking
activity: |
|
|
6393
|
Fri Mar 9 13:34:13 2012 |
keiko | Update | LSC | update on the locking activity | We tried to measure the sensing matrix
for MICH and PRCL last night. They look too
much mixed as we expect... the matrix may |
|
|
6398
|
Sat Mar 10 02:00:03 2012 |
keiko | Update | LSC | update on the locking activity | ITMX and ITMY balance for the MICH excitation
(lockin) is adjusted again. Now it's ITMx
= -0.992, ITMy = 1 for MICH (lockin output |
|