ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
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. |
|
|
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. |
|
|
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. |
|
|
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 |
|
|
7289
|
Mon Aug 27 18:59:24 2012 |
jamie | Update | IOO | MC ASC screen was confusing - Jenne is not stupid |
|
|
|
7288
|
Mon Aug 27 18:32:48 2012 |
Jenne | Update | IOO | MC spot position - Jenne is stupid |
|
|
|
7287
|
Mon Aug 27 17:14:00 2012 |
jamie | Update | CDS | c1oaf problem |
|
|
|
7286
|
Mon Aug 27 15:49:46 2012 |
Jenne | Update | SUS | EQ damage |
|
|
|
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 |
|
|
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 |
|
|
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 |
|
|
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 |
|
|
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 |
|
|
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, |
|
|
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 |
|
|
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 |
|
|
7277
|
Sun Aug 26 12:26:44 2012 |
Jenne | Update | IOO | MC spot position - not done yet |
|
|
|
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 |
|
|
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 |
|
|
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. |
|
|
7273
|
Fri Aug 24 20:48:10 2012 |
Koji | Update | PSL | PMC aligned | as usual. |
|
|
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, |
|
|
7271
|
Fri Aug 24 14:46:08 2012 |
Jenne | Summary | General | Detailed alignment plan | Friday / pre-vent:
[done]
Align the MC mirrors for the incident |
|
|
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 -> |
|
|
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 |
|
|
7268
|
Fri Aug 24 09:21:45 2012 |
Steve | Update | IOO | MC2 damping restored |
|
|
|
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 |
|
|
7266
|
Thu Aug 23 22:54:32 2012 |
Jenne | Update | Green Locking | Xgreen still wouldn't lock |
|
|
|
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. |
|
|
7264
|
Thu Aug 23 22:41:04 2012 |
Koji | Update | IOO | MC Autolocker update | [Koji Rana]
MC Autolocker was updated. (i.e.
mcup and mcdown were updated) |
|
|
7263
|
Thu Aug 23 22:21:13 2012 |
rana | Configuration | IOO | MCL turned back on | I turned on some filters and gain in the
SUS-MC2_MCL filter bank tonight so as suppress
the seismic noise influence on MC_F. This |
|
|
7262
|
Thu Aug 23 21:53:18 2012 |
Yaakov | Update | PEM | Accelerometer location | The MC1 accelerometer cube (3 accelerometers
arranged in x,y,z) is under the PSL table,
as I found it at the beginning of the summer. |
|
|
7261
|
Thu Aug 23 21:53:06 2012 |
Jenne | Update | Green Locking | Xgreen still wouldn't lock | [Jenne, Jamie]
We took a look at the Xend green,
and we weren't able to make it lock. |
|
|
7260
|
Thu Aug 23 17:51:25 2012 |
Manasa | Update | | IMC Ringdown |
|
|
|
7259
|
Thu Aug 23 17:17:49 2012 |
Masha | Summary | Computers | Code Folder Status | I cleaned up my directory (/users/masha)
today. A lot of the files are just code that
I experimented with, but the important files |
|
|
7258
|
Thu Aug 23 15:42:48 2012 |
rana | Update | STACIS | STACIS signal box made |
I found this
entry in the old 40m ilog which |
|
|
7257
|
Thu Aug 23 15:35:33 2012 |
rana | Update | | IMC Ringdown |
It is HIGHLY unlikely
that the IMC mirrors are having any effect |
|
|
7256
|
Thu Aug 23 12:17:39 2012 |
Manasa | Update | | IMC Ringdown | The ringdown measurements are in progress.
But it seems that the MC mirrors are getting
kicked everytime the cavity is unlocked by |
|
|
7255
|
Thu Aug 23 10:38:12 2012 |
Steve | Update | General | vent prepartion for fast-track vent |
|
|
|
7254
|
Thu Aug 23 10:08:13 2012 |
Steve | Update | PEM | seismometers? |
|
|
|
7253
|
Thu Aug 23 00:18:54 2012 |
Jenne | Update | PEM | Weird BLRMS increase | While I was gone for dinner break, the BLRMS
went back to normal. Then, almost 2 hours
later, another peak appeared, this time closer |
|
|
7252
|
Wed Aug 22 20:33:51 2012 |
Den | Update | Adaptive Filtering | MC_L in ARMS | Jenne and I did adaptive filtering of MC_L
and measured how X and Y ARM control signals
change compared to non-filtered MC_L. We |
|
|
7251
|
Wed Aug 22 18:58:12 2012 |
Jenne | Update | PEM | Weird BLRMS increase | It seems as though there is something funny
going on around ~1.5 Hz, starting a little
over an hour ago. |
10x |
|
7250
|
Wed Aug 22 16:50:09 2012 |
Jenne | Update | Locking | Double integrator in ARM LSC servos | Last week, Rana changed the integrators
in the arm LSC servo filters to be double
integrators with complex poles. |
|
|
7249
|
Wed Aug 22 15:47:34 2012 |
jamie | Summary | General | vent prepartion for fast-track vent | We are discussing venting first thing next
week, with the goal of
diagnosing what's going on in the |
|
|
7248
|
Wed Aug 22 11:41:20 2012 |
steve | Update | General | grout plate for optical table at the ends | Reinforced concrete grout plate for existing
carbon steel stands at the ends.
|
|
|
7247
|
Wed Aug 22 01:54:03 2012 |
Jenne | Update | General | List o' things: YarmASS, ETMXTcamera, POXwhiteningTriggering | While meditating
on other things, I have noticed / found the
following today: |
|
|
7246
|
Tue Aug 21 22:54:47 2012 |
Jenne | Update | Locking | Removed beam dump from POY path | POY was looking funny, and the YARM wasn't
locking. It looked like POY wasn't
seeing any light at all. I went to |
|
|
7245
|
Tue Aug 21 18:23:58 2012 |
Manasa | Update | 40m Upgrading | ETMX table layout | Optical layout of the current endtable
at ETMX has been updated in the svn repository
(directory: 40M_Optical Layout). This layout |
|
|
7244
|
Tue Aug 21 15:26:04 2012 |
Steve | Update | PEM | temp sensor for vacuum | Temperature sensor for vacuum. How many
: 2 or 3 ? $350 each
Glass encapsulated thermistor |
|