| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
6201
|
Sun Jan 15 12:18:00 2012 |
Den | Update | Adaptive Filtering | running time | In order to figure out what downsampling
ratio we can take, we need to determine the
running time of the fxlms_filter() function. |
|
|
6200
|
Sun Jan 15 11:40:30 2012 |
Den | Update | Adaptive Filtering | downsampling | Here for the downsampling process we use
a low-pass Bessel digital filter of order
6, normalized cut-off frequency = 0.1. In |
|
|
6199
|
Sun Jan 15 10:28:02 2012 |
Den | Update | Adaptive Filtering | delays | We can account for delays in the oaf system
by compensating it in the adaptive path of
the filter. But using only this procedure |
|
|
6198
|
Sat Jan 14 00:50:08 2012 |
rana, koji | Configuration | IOO | Towards coating thermal noise measurement with RefCav / MC beat | Koji asked aloud tonight if we could |
|
|
6197
|
Fri Jan 13 17:40:38 2012 |
Zach | Update | RF System | foam box and temp controller taken off of PSL table | I stole the foam EOM box and the temperature
controller circuit from the PSL table so
that I could continue with the RAM measurements |
|
|
6196
|
Fri Jan 13 16:16:05 2012 |
Leo Singer | Update | Stewart platform | Flexure type for leg joints | I had been thinking of using this
flexure for the bearings for the
leg joints, but I finally realized that it |
|
|
6195
|
Fri Jan 13 00:51:40 2012 |
Leo Singer | Update | Stewart platform | Frequency-dependent requirements for Stewart platform | Below are revised design parameters for
the Stewart platform based on ground motion
measurements. |
|
|
6194
|
Thu Jan 12 23:19:56 2012 |
Koji | Update | SUS | c1iscex is fine now | c1iscex
is working as before and the optic is damped.
What I checked |
|
|
6193
|
Thu Jan 12 23:13:42 2012 |
Koji | Configuration | WIKI-40M Update | Unable to create Wiki page |
|
|
|
6192
|
Thu Jan 12 21:22:16 2012 |
Leo Singer | Configuration | WIKI-40M Update | Unable to create Wiki page | I can't create a new page on the
40m wiki. The page that I was trying
to create is |
|
|
6191
|
Thu Jan 12 11:08:23 2012 |
Leo Singer | Update | PEM | Funky spectrum from STS-2 | I am trying to stitch together spectra
from seismometers and accelerometers to produce
a ground motion spectrum from Hz to 100's |
|
|
6190
|
Thu Jan 12 10:11:59 2012 |
steve | Update | PEM | optical table top with 1" wall |
|
|
|
6188
|
Thu Jan 12 07:44:21 2012 |
steve | Update | SUS | sapphire wire standoff quote |
On Tue, Dec 20, 2011 at 11:37 PM,
Rana Adhikari wrote: |
|
|
6187
|
Thu Jan 12 03:05:02 2012 |
kiwamu | Update | LSC | OSA installed in AS | [John / Valera / Kiwamu]
We
installed a new weapon, an optical spectrum |
|
|
6186
|
Wed Jan 11 21:35:33 2012 |
Max De Jong | Update | General | Projector | I finished mounting the new projector.
The projector and computer monitor now display
information. |
|
|
6185
|
Wed Jan 11 14:06:28 2012 |
Leo Singer | HowTo | Computer Scripts / Programs | HowTo for getting data from NDS off site | This may or may not be general knowledge
already, but Jamie and I added a HowTo explaining
how to retrieve channel data from the frame |
|
|
6184
|
Tue Jan 10 09:17:23 2012 |
steve | Update | Photos | strawman's visiters | |
|
|
6183
|
Tue Jan 10 00:09:33 2012 |
kiwamu | Update | LSC | spike hunting in REFL33 | [John / Kiwamu]
We
tried to figure out what is causing spikes |
|
|
6182
|
Mon Jan 9 23:52:15 2012 |
kiwamu | Update | CDS | SUS channels not accessible from dataviewer | [John / Kiwamu]
We
found that some of the suspensions channels |
|
|
6181
|
Mon Jan 9 13:19:09 2012 |
kiwamu | Update | SUS | ETMX damping restored | No
we can't do that because the c1scx model
is not working properly. |
|
|
6180
|
Mon Jan 9 08:47:35 2012 |
steve | Update | SUS | ETMX damping restored | ETMX sus damping restored |
|
|
6179
|
Fri Jan 6 20:10:48 2012 |
rana | Update | CDS | framebuilder back online, using NTP time syncronization |
|
|
|
6178
|
Fri Jan 6 19:17:07 2012 |
Max De Jong | Update | General | Mounted projector | I mounted the new projector to the pipe
where the old projector was attached. The
mounting hardware wasn't designed for attaching |
|
|
6177
|
Fri Jan 6 14:31:54 2012 |
Jamie | Update | CDS | framebuilder back online, using NTP time syncronization | The framebuilder is back online now, minus
it's symmetricom GPS card. The card
seems to have failed entirely, and was not |
|
|
6176
|
Fri Jan 6 11:49:13 2012 |
Jamie | Update | CDS | framebuilder taken offline to diagnose problem with symmetricom timing card | Alex and I have taken the framebuilder
offline to try to see what's wrong with the
symmetricom card. We have removed the |
|
|
6175
|
Fri Jan 6 01:00:56 2012 |
kiwamu | Update | CDS | c1scx out of sync | Both
the c1scx and its IOP realtime processes
became out of sync. |
|
|
6174
|
Thu Jan 5 20:40:21 2012 |
Jamie | Update | CDS | RTS upgrade aborted; restored to previous settings; fb symmetricom card failing? | After running into more problems with the
upgrade, I eventually decided to abort todays
upgrade attempt, and revert back to where |
|
|
6173
|
Thu Jan 5 09:59:27 2012 |
Jamie | Update | CDS | RTS/RCG/DAQ UPGRADE TO COMMENCE | RTS/RCG/DAQ UPGRADE
TO COMMENCE
I will be attempting
(again) to upgrade the RTS, including the |
|
|
6172
|
Thu Jan 5 09:08:48 2012 |
steve | Update | General | framebuilder is back | Dataviewer is recovered after heavy new
year party. |
|
|
6171
|
Wed Jan 4 16:40:52 2012 |
Jamie | Update | Computers | front-end fb communication restored | Communication between the front end models
and the framebuilder has been restored.
I'm not sure exactly what the issue was, |
|
|
6170
|
Wed Jan 4 16:22:30 2012 |
kiwamu | Update | LSC | power normalization in LSC : modification done | The
dynamic power normalization system has been
modified such that the normalization happen |
|
|
6169
|
Wed Jan 4 11:47:08 2012 |
Jamie | Summary | Computer Scripts / Programs | medm directory clean-up |
|
|
|
6168
|
Wed Jan 4 09:06:50 2012 |
steve | Update | Computers | possible front-end timing issue |
|
|
|
6167
|
Wed Jan 4 05:02:58 2012 |
kiwamu | Update | LSC | Sidebands measurement at POP | Just
a quick report:
I did |
|
|
6166
|
Wed Jan 4 03:03:24 2012 |
kiwamu | Update | LSC | locking activity tonight and beyond | Last night and tonight, I was doing
a kind of rehabilitation -- locking PRMI
and DRMI with the new trigger system.
|
|
|
6165
|
Wed Jan 4 02:43:40 2012 |
rana | Update | General | Actuators for Stewart platform |
|
|
|
6164
|
Wed Jan 4 00:43:06 2012 |
kiwamu | Update | IOO | MC became flaky | I
don't know what exactly is going on, but
MC became flaky and it's been frequently |
|
|
6163
|
Tue Jan 3 20:42:05 2012 |
Leo Singer | Update | General | Actuators for Stewart platform | I checked on the two single-axis
shakers that are present at the 40m that
Steve pointed out: |
|
|
6162
|
Tue Jan 3 18:40:08 2012 |
Aidan | Summary | Computer Scripts / Programs | medm directory clean-up | I moved the following old and obsolete
MEDM directories to an archive /cvs/cds/rtcds/caltech/c1/medm
c1vga
c1vgl
|
|
|
6161
|
Tue Jan 3 17:46:38 2012 |
Updated Stewart platform design requirements | Update | General | Updated design requirements for a Stewart platform | I updated the design requirements for the
Stewart platform. I weighed the unloaded
"dirty" SOS that was sitting on |
|
|
6160
|
Tue Jan 3 17:25:27 2012 |
Koji | Update | PSL | Found the laser was off | I found the PSL laser has been off for
four hours. Nobody seemed to know why.
I just turned it on and it is now |
|
|
6159
|
Tue Jan 3 15:49:27 2012 |
Jamie | Update | Computers | possible front-end timing issue |
|
|
|
6158
|
Tue Jan 3 15:48:39 2012 |
kiwamu | Update | LSC | power normalization in LSC | It
turned out that the power normalization need
a modification. |
|
|
6157
|
Tue Jan 3 15:45:04 2012 |
Jenne | Update | Computers | FB? | Is there a reason the framebuilder status
light is red for all the front ends?
Also, I reenabled PRM watchdog. |
|
|
6156
|
Fri Dec 30 22:05:16 2011 |
kiwamu | Update | LSC | power normalization in LSC | Now a power
normalization is doable for the LSC error |
|
|
6155
|
Fri Dec 30 02:16:48 2011 |
kiwamu | Update | Green Locking | Yarm ALS : high frequency noise reduced | The
high frequency noise, which has been a dominant
noise above 30 Hz in the Y arm ALS ( |
|
|
6154
|
Wed Dec 28 14:13:16 2011 |
kiwamu | Update | Green Locking | ALS feedback on MC2 | I
added an ALS feedback path on the MC2 suspension
and this path will enable us to stabilise |
|
|
6153
|
Tue Dec 27 23:03:56 2011 |
kiwamu | Update | PSL | PMC realigned | I have realigned the steering mirrors for
PMC because the transmitted light had been
at ~ 0.741 |
|
|
6152
|
Tue Dec 27 22:17:56 2011 |
kiwamu | Update | LSC | multiple-LOCKIN new screens | Some
new screens have been made for the new multiple-LOCKIN
system running on the LSC realtime controller. |
|
|
6151
|
Tue Dec 27 16:56:15 2011 |
kiwamu | Update | LSC | Scmitt trigger installed | The old
trigger system has been replaced by Schmitt |
|