ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
4048
|
Mon Dec 13 21:03:30 2010 |
Kevin | Update | Electronics | RF Photodiode Characterizations | [Koji, Jenne, Kevin]
Jenne worked on fixing REFL11 last
week (see elog 4034) |
|
4051
|
Tue Dec 14 04:14:53 2010 |
rana | Update | Electronics | RF Photodiode Characterizations | This is looking better, but the fit data
for the TF should be plotted along with the
data. The data should be made up of points |
|
4503
|
Fri Apr 8 01:05:45 2011 |
Suresh | Update | RF System | RF Source Harmonics |
The measured power levels of
the RF source harmonics are given below: |
|
4557
|
Fri Apr 22 09:05:53 2011 |
Suresh | Update | RF System | RF Source Harmonics |
As seen in the previous measurement the first
harmonic of both the 11 MHz and 55 MHz outputs |
|
4559
|
Fri Apr 22 10:28:22 2011 |
rana | Update | RF System | RF Source Harmonics | You should be able to resolve the other harmonics
by [B][COLOR=blue]decreasing the IF BW or
RBW[/COLOR][/B] on the analyzer. Even though
|
|
4628
|
Wed May 4 15:39:32 2011 |
Suresh | Update | RF System | RF Source Harmonics |
I have measured the RF source harmonics in |
|
4657
|
Sat May 7 10:59:11 2011 |
Suresh | Update | RF System | RF Source filters changed |
The
SLP-50 filters which were on the 55 MHz lines |
 |
4578
|
Thu Apr 28 06:46:30 2011 |
Suresh | Update | RF System | RF Source installed | RF Source
box has been mounted in the 1X2 rack. |
|
4558
|
Fri Apr 22 09:25:43 2011 |
Suresh | Update | RF System | RF Source: Temperature sensor relocated | RF Amp operating temperature
Earlier measurement reported by Alberto
in LIGO-T10004-61-v1 based on the LM34 temperature |
|
4711
|
Fri May 13 01:51:56 2011 |
Suresh | Update | RF System | RF Status update | I have posted the attached RF status update
and 1Y2 rack layout to the svn. |
 |
8979
|
Wed Aug 7 15:51:53 2013 |
Alex Cole | Configuration | Electronics | RF Switch Change | For the photodetector frequency response
project, our new RF Switch Chassis (NI pxie-1071)
arrived today. I took the switches out of |
|
3532
|
Tue Sep 7 13:31:49 2010 |
Alberto | Update | Electronics | RF System - Frequency Distribution Box - Priority Plan | We need a distribution unit in the LSC
rack to: 1) collect the demod signals coming
from the Frequency Generation Box 2) adjust |
 |
4459
|
Wed Mar 30 02:55:02 2011 |
Suresh | Configuration | Electronics | RF System : Status and Plans | I have prepared several diagrams outlining
the current state of the RF System.
These are uploaded into the svn40m |
|
13329
|
Sun Sep 24 20:47:15 2017 |
rana | Update | Computer Scripts / Programs | RF TF Uncertainties | I have made several changes to Craig's
script for better pythonism. Its more robust
with different libraries and syntaxes and |
 |
173
|
Thu Dec 6 15:21:59 2007 |
alberto | Frogs | Electronics | RF Transfer Function of Stiff Aluminum Wires | Transfer function of 3cm long Aluminum wires
and of 3cm stranded wires |
  |
6837
|
Wed Jun 20 01:02:20 2012 |
Jamie | Update | Green Locking | RF amp removed from X arm ALS setup | I very badly forgot to log about this in
the crush of surfs.
I removed Koji's proto-beatbox RF |
|
11101
|
Thu Mar 5 11:18:28 2015 |
manasa | Update | General | RF amplifier box | I pulled out the RF amplifier box from
the IOO rack and swapped the amplifiers
for FOL beat frequency amplification. The |
|
10964
|
Mon Feb 2 16:58:56 2015 |
manasa | Update | General | RF amplifier for ALS | Today I was around the IOO rack.
I shutdown the power to the beat
PDs on the PSL table and disconnected the |
|
10970
|
Tue Feb 3 16:43:48 2015 |
manasa | Update | General | RF amplifier for ALS | I pulled out the RF amplifier box from
the IOO rack again and added the new
RF amplifiers for FOL. |
|
10977
|
Wed Feb 4 21:05:24 2015 |
manasa | Update | General | RF amplifier for ALS | The components of the RF amplifier
box are in place. The RF amplifier box has
been mounted on the IOO rack and the front |
|
11026
|
Fri Feb 13 19:41:13 2015 |
ericq | Update | General | RF amplifier for ALS | As Koji found one of the spare channels
of the ALS/FOL RF amplifier box nonfunctional
yesterday, I pulled it out to fix it. I found |
|
11027
|
Sat Feb 14 00:42:02 2015 |
Koji | Update | General | RF amplifier for ALS | The RF analyzer was returned to the control
room. There are two beat notes from X/Y confirmed.
I locked the arms and aligned them |
|
4479
|
Thu Mar 31 20:37:10 2011 |
Aidan | Summary | Green Locking | RF amplitude source | I gutted one of the $2 red laser
pointers to build a laser source whose amplitude
we could modulate at RF frequencies. Basically, |
  |
2059
|
Tue Oct 6 20:09:50 2009 |
Jenne | Omnistructure | Environment | RF area is clean! | I spent part of the afternoon cleaning
up the area next to the Mode Cleaner where
we keep all of our RF stuff: Attenuators, |
|
2060
|
Tue Oct 6 23:39:54 2009 |
Koji | Omnistructure | Environment | RF area is clean! | Awesome.
I propose that anyone who tries to
do this kind of thoroughgoing cleaning should |
|
10128
|
Thu Jul 3 16:28:38 2014 |
Nichin | Update | Electronics | RF cables installed | [ Nichin, Eric G]
RF cables have been installed between
deomodulator output PD RF MON and the RF |
|
10142
|
Mon Jul 7 16:52:02 2014 |
manasa | Update | Electronics | RF cables need to be rerouted | The RF cables have been routed incorrectly.
The cables run to the module from the front
of the rack. We cannot close the doors to |
|
10082
|
Fri Jun 20 16:36:44 2014 |
Nichin | Update | Electronics | RF cables removed | [Nichin, Eric G]
As mentioned in Elog 10062, we found
RF cables running between demodulators in |
|
10145
|
Mon Jul 7 18:38:27 2014 |
Nichin | Update | Electronics | RF cables rerouted |
|
 |
10147
|
Mon Jul 7 22:07:29 2014 |
rana | Update | Electronics | RF cables rerouted | This Red Ladder movement also probably
included some bumping of the MC2 stack ( |
|
10202
|
Tue Jul 15 12:36:17 2014 |
Nichin | Update | Electronics | RF cables rerouted |
|
|
4505
|
Fri Apr 8 20:43:46 2011 |
kiwamu | Summary | IOO | RF combiner + resonant box : impedance and reflection coefficient | The
input impedance of the resonant box was measured
when an RF combiner was attached to the box. |
|
4504
|
Fri Apr 8 19:43:03 2011 |
kiwamu | Summary | IOO | RF combiner eases impedance mismatching | An RF combiner should |
|
4517
|
Tue Apr 12 18:15:07 2011 |
kiwamu | Summary | IOO | RF combiner is more like attenuator |
I realized |
|
655
|
Thu Jul 10 14:59:01 2008 |
rob | Update | Locking | RF common mode at zero offset | [I]rob, john, yoichi[/I]
[SIZE=3][FONT=Comic Sans MS]Last night we |
 |
661
|
Fri Jul 11 23:55:25 2008 |
alan | Update | Locking | RF common mode at zero offset | [quote][I]rob, john, yoichi[/I]
[SIZE=3][FONT=Comic Sans MS]Last night we |
|
10919
|
Mon Jan 19 11:03:32 2015 |
manasa | Update | General | RF connections to adder | RF connections to the beat note adder on
the IOO rack have been undone and it
should be good to proceed with any locking |
|
5744
|
Wed Oct 26 23:03:03 2011 |
kiwamu | Update | LSC | RF distribution box : two more 55MHz available | The RF distribution
box has been modified so that it generates |
|
5746
|
Thu Oct 27 16:09:37 2011 |
kiwamu | Update | LSC | RF distribution box : two more 55MHz available | The diagram of the RF distribution box
has been updated according to the modification
( #5744). |
|
9095
|
Mon Sep 2 16:46:32 2013 |
Jenne | Update | Electronics | RF distribution box is on the bench | I have pulled the RF distribution box out
of the rack, so I can look at it, and modify
it to have 2 110 MHz spigots. I'm going to |
|
9563
|
Tue Jan 21 19:41:59 2014 |
Jenne | Update | Electronics | RF distribution box power button fail | Rana, Gabriele and I are trying to measure
the FSR of the PRC (elog about that later),
and we turned off the power to the RF generation |
|
9566
|
Wed Jan 22 16:36:45 2014 |
ericq | Update | Electronics | RF distribution box power button fail |
|
|
9096
|
Mon Sep 2 18:06:21 2013 |
Jenne | Update | Electronics | RF distribution box: 110 MHz LO options | After scrounging for parts, and opening
up the box, I have modified my proposal to
the following: |
  |
9099
|
Tue Sep 3 21:08:13 2013 |
Jenne | Update | Electronics | RF distribution box: 110 MHz LO options | The RF distribution box is still on the
bench, so again, don't |
|
9101
|
Wed Sep 4 16:06:40 2013 |
Jenne | Update | Electronics | RF distribution box: Reinstalled | I have reinstalled the RF distribution
box, as well put in the AS110 demod board.
I plugged everything back in, and turned |
|
9106
|
Wed Sep 4 21:44:54 2013 |
Not Jenne | Update | Electronics | RF distribution box: Reinstalled | Temporary fix for the switch: give a bit
of oil to the button
Permanent fix: buy better switches. |
|
4010
|
Fri Dec 3 15:56:50 2010 |
Joonho, Jenne. | Summary | Electronics | RF distribution unit plan | The last time(Moonday) Jenne and I worked
on the RF distribution unit's structure.
We are making RF distribution unit |
|
3976
|
Tue Nov 23 11:32:03 2010 |
Joonho | Summary | Electronics | RF distribution unit. | The last time(Friday) I made an arrangement
for RF distribution unit.
I am making RF distribution unit |
|
15343
|
Fri May 22 01:43:18 2020 |
gautam | Update | Electronics | RF electronics trouble | To test a hypothesis, I have left the PSL
shutter closed. I notice significant glitches
in the dark electronics offsets on all the |
|
7447
|
Thu Sep 27 16:26:11 2012 |
Steve | Update | LSC | RF fibre protection in cable trays |
|
|