| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
7265
|
Thu Aug 23 22:44:32 2012 |
Koji | Update | PSL | FSS Slow DC servo is turned off (not temporary) | [Koji Rana]
The FSS Slow DC servo was turned
off. |
|
|
7266
|
Thu Aug 23 22:54:32 2012 |
Jenne | Update | Green Locking | Xgreen still wouldn't lock |
|
|
|
7267
|
Fri Aug 24 00:23:20 2012 |
Den | Update | Modern Control | feedback using LQG method | I did a simulation of linear quadratic
gaussian (LQG) controller applied to local
damping. The cost function was frequency |
|
|
7268
|
Fri Aug 24 09:21:45 2012 |
Steve | Update | IOO | MC2 damping restored |
|
|
|
7269
|
Fri Aug 24 11:46:59 2012 |
Masha | Update | PEM | New classification weights | I recently realized that I may have over-trained
my classification neural network and used
too many parameters, so that my weight vectors |
|
|
7270
|
Fri Aug 24 13:22:19 2012 |
Den | Update | Modern Control | cavity simulation | I did a simulation of a cavity, feedback
signal was calculated using LQG controller.
I assumed that there is not length -> |
|
|
7272
|
Fri Aug 24 16:03:39 2012 |
Steve | Update | VAC | Vacuum related work at atm | Vacuum related work at atmosphere:
Atm1, Check all chamber dog
clamps tightness with torque wrench, |
|
|
7273
|
Fri Aug 24 20:48:10 2012 |
Koji | Update | PSL | PMC aligned | as usual. |
|
|
7274
|
Fri Aug 24 21:00:40 2012 |
Koji | Update | LSC | X end green investigation | I checked and fixed the X end green situation.
Now
the X green beam is locked with TEM00. |
|
|
7275
|
Fri Aug 24 22:01:15 2012 |
Jenne | Update | IOO | MC spot position - close | I am getting closer with the MC spot centering.
I had everything but MC1 really great, but
then I tweaked MC1's pointing, and things |
|
|
7276
|
Sun Aug 26 11:53:09 2012 |
Jenne | Update | IOO | MC2 getting kicked up regularly | We need to re-look at this new MC autolocker
stuff, and the new MCL filters.
MC2 is getting kicked up (sometimes |
|
|
7277
|
Sun Aug 26 12:26:44 2012 |
Jenne | Update | IOO | MC spot position - not done yet |
|
|
|
7278
|
Sun Aug 26 20:58:21 2012 |
Jenne | Update | VAC | Don't vent!!!! | [Koji, Jenne]
Steve, do not vent tomorrow morning!
We are still not prepared, and will not finish |
|
|
7279
|
Sun Aug 26 21:47:50 2012 |
Koji | Update | CDS | C1LSC ooze | I came in to the lab in the evening and
found c1lsc had "red" for FB connection.
I restarted c1lsc models and it kept |
|
|
7280
|
Mon Aug 27 01:05:36 2012 |
Jenne | Update | IOO | MC spot position - callin' it quits | spot positions in mm (MC1,2,3 pit MC1,2,3
yaw):
[-0.98675603448324423, -0.94064212026141558, |
|
|
7281
|
Mon Aug 27 08:34:18 2012 |
Steve | Update | PEM | earthquakes | Shasky
day yesterday postpones venting. We had
about 11 shakes larger than mag 4.0 Mag5.5 |
|
|
7282
|
Mon Aug 27 09:24:17 2012 |
Steve | Update | SUS | EQ damage | It looks like we may lost 1 (or
3 ) magnets? Do not panic, it's not
for sure |
|
|
7283
|
Mon Aug 27 10:49:03 2012 |
Koji | Update | SUS | EQ damage | After shaking ITMX by the alignment bias
in yaw, it came back.
As ETMX seems to be largely misaligned |
|
|
7284
|
Mon Aug 27 12:03:54 2012 |
Koji | Update | IOO | MC spot position - callin' it quits | The MC REFL path was checked. ==> Some
clippings were fixed. MC WFS is working now.
- MC was aligned manually |
|
|
7285
|
Mon Aug 27 15:46:55 2012 |
Steve | Update | SAFETY | safety training | Rijuparna Chakraborty
and Elli Elenora King received 40m specific
basic safety training in the 40mLab |
|
|
7286
|
Mon Aug 27 15:49:46 2012 |
Jenne | Update | SUS | EQ damage |
|
|
|
7287
|
Mon Aug 27 17:14:00 2012 |
jamie | Update | CDS | c1oaf problem |
|
|
|
7288
|
Mon Aug 27 18:32:48 2012 |
Jenne | Update | IOO | MC spot position - Jenne is stupid |
|
|
|
7289
|
Mon Aug 27 18:59:24 2012 |
jamie | Update | IOO | MC ASC screen was confusing - Jenne is not stupid |
|
|
|
7290
|
Mon Aug 27 23:52:59 2012 |
Jenne | Update | IOO | MC Spots centered | Finally!
Jamie and I have the MC spots centered.
We did the normal move the input beam, realign |
|
|
7291
|
Tue Aug 28 00:16:19 2012 |
jamie | Update | General | Alignment and vent prep | I think we (Jenne, Jamie) are going to
leave things for the night to give ourselves
more time to prep for the vent tomorrow. |
|
|
7292
|
Tue Aug 28 00:23:54 2012 |
Jenne | Update | PSL | PMC alignment going bad | PMC transmission started going down this
afternoon, around 3pm-ish. Right now
it's 0.775, which is very, very low. |
|
|
7293
|
Tue Aug 28 09:37:33 2012 |
Steve | Update | VAC | RGA scan at day 56 | RGA scan, Maglev pumping speed at
day 56
CC1 is dying. CC4 is real. |
|
|
7294
|
Tue Aug 28 11:28:31 2012 |
ericq | Update | PSL | PMC alignment going bad |
|
|
|
7295
|
Tue Aug 28 16:27:22 2012 |
ericq | Update | PSL | PBS and Half Wave plates introduced | [Jenne, Eric]
We installed a Half Wave Plate ->
Polarized Beam Splitter -> Half Wave Plate |
|
|
7296
|
Tue Aug 28 17:02:16 2012 |
jamie | Update | General | svn commit changes | I just spent the last hour checking in
a bunch of uncommitted changes to stuff in
the SVN. |
|
|
7297
|
Tue Aug 28 17:16:54 2012 |
ericq | Update | PSL | Power reduced! | We have now reduced the power being
input to the MC from 1.25W to 10mW, and changed
out the MC refl BS for a mirror. |
|
|
7298
|
Tue Aug 28 17:43:04 2012 |
Jenne | Update | PSL | Power reduced! |
|
|
|
7299
|
Tue Aug 28 17:51:39 2012 |
Jenne | Update | PSL | PBS and Half Wave plates introduced |
|
|
|
7300
|
Tue Aug 28 17:59:03 2012 |
Jenne | Update | VAC | VENT: GO! | I have turned of the high voltage supplies
for PZT1 and PZT2. The OMC PZT high
voltage supplies were already off, since |
|
|
7306
|
Wed Aug 29 11:47:21 2012 |
ericq | Update | VAC | Venting | [Steve, Eric]
I've been helping Steve vent this
morning. The following things were done (from |
|
|
7307
|
Wed Aug 29 12:46:49 2012 |
Steve | Update | VAC | Vent completed in 4 hrs |
|
|
|
7308
|
Wed Aug 29 17:02:41 2012 |
ericq | Update | PSL | Power reduced! |
|
|
|
7309
|
Wed Aug 29 17:09:57 2012 |
jamie | Update | SUS | ETMX OK, free swinging | ETMX appears to be fine. It was stuck
to its OSEMs in the usual way. I touched
it and it dislodged and is now swinging freely. |
|
|
7310
|
Wed Aug 29 17:35:34 2012 |
Koji | Update | PSL | Power reduced! | The biggest reason why we could not lock
the MC was that the beam was not properly hitting |
|
|
7311
|
Wed Aug 29 19:28:41 2012 |
Elli King | Update | LSC | Setup for a cavity scan or the input mode cleaner | Riju, Elli
Today we prepared
our experimental setup to take a cavity scan |
|
|
7312
|
Wed Aug 29 20:43:23 2012 |
Koji | Update | IOO | Setup for a cavity scan or the input mode cleaner | The technique is based on detection of
the beating between the resonant carrier
and a resonant higher order mode. |
|
|
7313
|
Wed Aug 29 21:02:45 2012 |
Jenne | Update | IOO | Optics between Faraday and PRM are centered, realigned | [Jenne, Suresh, with support from Jamie
and Koji]
MC spots measured, MC1, MC3 no change. |
|
|
7314
|
Thu Aug 30 00:08:34 2012 |
jamie | Update | General | In vac plans for tomorrow, 8/30 |
|
|
|
7315
|
Thu Aug 30 08:12:39 2012 |
Steve | Update | General | In vac plans for tomorrow, 8/30 |
1,PRM spot can be viewed directly
from the window south-east of ITMX chamber. |
|
|
7316
|
Thu Aug 30 08:37:11 2012 |
Steve | Update | SUS | ETMX and ITMX needs more attention |
|
|
|
7317
|
Thu Aug 30 12:01:27 2012 |
janosch, Manasa,Steve | Update | | ETMX | We have done some work at ETMX today. We
installed the baffle and placed two
mirrors on the table. |
|
|
7318
|
Thu Aug 30 13:10:41 2012 |
jamie | Update | Cameras | ETMX |
|
|
|
7319
|
Thu Aug 30 17:03:32 2012 |
janosch, Manasa, Steve | Update | | ETMX | The baffle has been moved away from ETMX
towards the edge of the table (in fact, it
is a little beyond the edge). It is also |
|
|
7320
|
Thu Aug 30 18:01:05 2012 |
Elli | Update | IOO | Setting up Input MC cavity scan measurement | Riju, Elli
Today tried to take our first cavity
scan. We unplugged the 55MHz sideband |
|