| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
6496
|
Fri Apr 6 15:06:05 2012 |
Den | Update | IOO | 1 Hz resonance | I think we can try to damp 1 Hz resonance
more. In September it was not seen because
of the digital noise. After we've figured |
|
|
6497
|
Fri Apr 6 16:22:15 2012 |
Den | Update | Environment | seism box | I've changed R2 resistor in the seism box
for the VERT 1 channel from 464 Ohm to 1051
Ohm to reduce the gain of this channel by |
|
|
6498
|
Fri Apr 6 16:35:37 2012 |
Den | Update | Computers | c1ioo | c1ioo computer can not connect to the framebuilder
and everything is red in the status for this
machine, C1:FEC-33_CPU_METER is not moving. |
|
|
6499
|
Fri Apr 6 19:04:35 2012 |
Jenne | Update | PEM | STS releveled, GUR2 plugged in | [Den, Jenne]
We were wondering why the STS-2 signal
was funny. When I went to look at it, |
|
|
6500
|
Fri Apr 6 19:40:57 2012 |
Mike J. | Summary | General | Laser Emergency Shutoff | I accidently shut off the laser at 19:34
with the emergency shutoff button while trying
to tap into a video line for the Sensoray |
|
|
6501
|
Fri Apr 6 20:05:12 2012 |
Jamie | Summary | General | Laser Emergency Shutoff | We reset the interlock and restarted the
PSL. The end AUX lasers seem to have
come back online fine. PMC and mode |
|
|
6502
|
Fri Apr 6 20:24:31 2012 |
Mike J. | Update | Computers | Sensoray | The Sensoray device is currently viewing
Monitor 4 and plugged into Pianosa.
The user interface is run at /home/controls/Downloads/sdk_2253_1.2.2_linux/python |
|
|
6503
|
Fri Apr 6 20:38:41 2012 |
Mike J. | Update | Computers | Sensoray | Turns out that the "MPEG-4 VES"
video format is just bad for captured video.
Everything except "MP4" and "MPEG-TS" |
|
|
6504
|
Sat Apr 7 00:31:12 2012 |
keiko | Update | LSC | RAM simulation for Full ifo | I didn't
understand how CARM can be decreased 2 orderes
of magnitude and PRCL can be INCREASED by |
|
|
6505
|
Sat Apr 7 01:45:02 2012 |
Mike J. | Update | Computers | Even Better Hysteresis Model and Plots | The new hysteresis model is slightly
based on the SHO equation, but with the force
being out of phase with the position by an |
|
|
6506
|
Sat Apr 7 01:56:05 2012 |
kiwamu | Update | LSC | OSA signal in DRMI condition | It wasn't a dream or illusion -- I was
locking the DRMI to the right condition last
Wednesday (#6489). |
|
|
6507
|
Sat Apr 7 02:01:29 2012 |
Mike J. | Update | Computers | Projector Cable Management | I replaced the projector video and power
cables with longer ones, and zip-tied them
to the ceiling and wall so they don't block |
|
|
6508
|
Sat Apr 7 06:58:34 2012 |
kiwamu | Update | LSC | DRMI lock : lost good alignment | Somehow I lost the good alignment, where
the lock can be frequently acquired and hence
I didn't go further ahead. |
|
|
6509
|
Mon Apr 9 15:02:30 2012 |
Jenne | Update | LSC | Locked MICH | I was going to try some locking, but things
are a little too noisy.
Just so Kiwamu knows what I did today, |
|
|
6510
|
Mon Apr 9 15:09:34 2012 |
Jenne | Update | LSC | Locked MICH |
|
|
|
6511
|
Mon Apr 9 17:03:38 2012 |
Den | Update | Environment | Lms vs Wiener | I tried to figure out why offline LMS filter
subtract seismic noise much better from MC_F
then the Wiener filter. I did the calculations |
|
|
6512
|
Mon Apr 9 18:18:14 2012 |
kiwamu | Update | LSC | DRMI time series | Here is a time series when the DRMI is
being locked.
You can see that the AS110 goes up |
|
|
6513
|
Mon Apr 9 20:02:19 2012 |
Mike J. | Update | Computers | Sensoray | The highest resolution available is 720x480
pixels. Bit depth of captured images and
video is most likely 16 bits per pixel. Video |
|
|
6514
|
Tue Apr 10 11:08:29 2012 |
tara | Update | PSL | curved mirror behind AOM removed | We removed the curved mirror behind the
AOM (ROC=0.3m) on PSL table. The mirror is
now in PSL lab. See PSL:905 |
|
|
6515
|
Tue Apr 10 13:42:54 2012 |
Jenne | Update | Environment | Plumbing guys are here | I don't know why, but they're looking around
on the roof, and inside our ceiling above
the bathrooms. |
|
|
6516
|
Tue Apr 10 17:02:29 2012 |
Jenne | Update | IOO | Mode matching recollections and conclusions | ...Mostly just recollections at this point.
I re-looked at the mode matching's
sensitivity to misplaced optics. Here |
|
|
6517
|
Tue Apr 10 23:56:44 2012 |
rana | Update | Computers | Sensoray | Now that Mike has got the Sensoray working,
Jenne/Suresh should grab some new images
of the ETM cage as Keiko did so that we can |
|
|
6518
|
Wed Apr 11 12:25:11 2012 |
Ryan | Update | Computers | Updating aLIGO Conlog | Over the next few days, I will be working
on upgrading the aLIGO Conlog install to
include new bugfixes distributed by Patrick |
|
|
6519
|
Wed Apr 11 14:34:48 2012 |
Jenne | Update | Environment | Plumbing guys are here |
|
|
|
6520
|
Wed Apr 11 16:33:16 2012 |
Jenne | Bureaucracy | General | 40m Meeting Action Items | Action
Items from Last Week:
(non-existant) |
|
|
6521
|
Wed Apr 11 17:56:26 2012 |
Jenne | Update | General | Summary of things to figure out with the IFO | Questions:
Power recycling gain
* It should be ~40, |
|
|
6522
|
Wed Apr 11 18:19:51 2012 |
Jenne | Update | IOO | Mode matching recollections and conclusions | Another histogram. This one allows
the MMT mirror positions to move, the MMT
incident angle for both curved optics to |
|
|
6523
|
Wed Apr 11 22:48:39 2012 |
rana | Update | Environment | BLRMS | |
|
|
6524
|
Thu Apr 12 00:16:38 2012 |
Jenne | Update | Environment | Earthquake - moderate |
M4.7 - Santa Isabel, Mexico
2012-04-12 06:48:38 UTC
Mode |
|
|
6525
|
Thu Apr 12 00:40:45 2012 |
Jenne | Update | SUS | PRM, BS oplevs off | There's a beam dump after the HeNe on the
BS oplev table, since the IPPOS measurement
optics (steering mirrors) are in the way |
|
|
6526
|
Thu Apr 12 01:17:56 2012 |
Suresh | Update | IOO | Beam Profile measurement: IPPOS beam: Possible Clipping | [Suresh, Jenne]
The
input beam is most probably being clipped |
|
|
6527
|
Thu Apr 12 08:49:14 2012 |
Den | Update | SUS | local damping and WFS | I tried to figure out what can add noise
below 0.5 Hz to the MC_F. I compared MC1,
MC2, MC3 suspos, suspit, susyaw and susside |
6x |
|
6528
|
Thu Apr 12 14:48:44 2012 |
Suresh | Update | SUS | local damping and WFS | WFS servo is moving
the MC mirror angles to minimise TEM01 and
TEM10 modes within the MC cavity. |
|
|
6529
|
Thu Apr 12 20:56:07 2012 |
Den | Update | PEM | daq | GUR1 XYZ, GUR2 XYZ, MC_F channels are now
recorded at 256 Hz.
|
|
|
6530
|
Thu Apr 12 22:04:17 2012 |
Mike J. | Update | Computers | New Hysteresis Model & Plots | The new hysteresis model uses a triangle
wave with offset zero points as the position
function and a sinusoidal force function, |
|
|
6531
|
Thu Apr 12 23:12:16 2012 |
Suresh | Update | IOO | Beam Profile measurement: IPPOS beam: Possible Clipping |
|
6x |
|
6532
|
Thu Apr 12 23:52:49 2012 |
Jenne | Update | Locking | PRMI locked - 'bouncy' | I am locking some things, and have the
PRM aligned, and it will stay locked for
short periods of time, but as Kiwamu warned |
|
|
6533
|
Fri Apr 13 01:27:10 2012 |
Jenne | Update | SUS | Oplevs recentered | It's been a while since I think anyone
has done it, and several optics were pretty
far from centered, so I centered all of the |
|
|
6534
|
Fri Apr 13 16:09:43 2012 |
Suresh | Update | Computer Scripts / Programs | ACAD 2002 installed on C21530 | I have installed
ACAD 2002 on one of the Windows machines |
|
|
6535
|
Sat Apr 14 00:19:35 2012 |
Suresh | Omnistructure | LSC | Optical Fibers for insitu RFPD characterisation | I have worked out the fibers
we need to get for the following distribution
scheme: |
|
|
6536
|
Mon Apr 16 09:10:37 2012 |
Den | Update | PEM | gur2_x | Already not for the first time I notice
that GUR2 readjusts its X zero position
|
|
|
6537
|
Mon Apr 16 09:44:54 2012 |
Jenne | Update | PEM | gur2_x |
|
|
|
6538
|
Mon Apr 16 14:37:01 2012 |
Den | Update | PEM | gur2_x |
|
|
|
6539
|
Tue Apr 17 10:55:50 2012 |
Ryan | Update | Computers | Updating aLIGO Conlog |
|
|
|
6540
|
Tue Apr 17 11:05:04 2012 |
Jamie | Update | CDS | CDS upgrade in progress | I am continuing to attempt to upgrade the
CDS system to RTS 2.5. Systems will
continue to be up and down for the rest of |
|
|
6541
|
Tue Apr 17 19:03:09 2012 |
Jamie | Update | CDS | CDS upgrade in progress | Upgrade progresses, but not complete.
There are some relatively minor issues, and
one potentially big issue. |
|
|
6542
|
Wed Apr 18 08:53:50 2012 |
Jamie | Update | General | Power outage last night | Apparently there was a catastrophic power
failure last night. Bob says it took
out power in most of Pasadena. |
|
|
6543
|
Wed Apr 18 10:05:40 2012 |
Jamie | Update | General | Power outage last night | All of the front-ends are back up and I've
been able to recover local control of all
of the opitcs (snapshots from saturday). |
|
|
6544
|
Wed Apr 18 11:46:14 2012 |
Jenne | Update | General | Power outage last night |
|
|
|
6545
|
Wed Apr 18 11:54:31 2012 |
Jenne | Update | General | Power outage last night |
|
|