| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
2500
|
Mon Jan 11 09:18:44 2010 |
Alberto | Update | General | Measurement running | I'm working on the AbsL experiment. A measurement
which involved the PRC locked is running
at the moment. |
|
|
2507
|
Tue Jan 12 09:14:52 2010 |
steve | Summary | General | Scattering Measurements of 35W Beam Dumps |
What was the power level, polarization
and beam size at beam trap? |
|
|
2568
|
Wed Feb 3 11:13:15 2010 |
steve | Configuration | General | planed power outage for Sat. Feb 20 | The electrical shop has to connect the
new power transformer at CES. This means
we will have no AC power for ~8 hrs on Saturday, |
|
|
2585
|
Wed Feb 10 16:27:47 2010 |
steve | Configuration | General | IFO beam heights | IN
VACUUM beam heights are ALL 5.5"
This is measured from the top of the |
|
|
2612
|
Thu Feb 18 10:10:43 2010 |
steve | Configuration | General | 480 V AC power turned off | Only the 40m cranes are running on 480VAC
The electricians are rewiring this transformer
on the mezzanine so it was shut down. |
|
|
2617
|
Fri Feb 19 13:28:44 2010 |
Koji | Update | General | Prep for Power Supply Stop | - ETMX/ETMY oplev paths renewed. The nominal
gain for ETMY YAW was reversed as a steering
mirror has been put. |
|
|
2620
|
Sun Feb 21 17:44:35 2010 |
rana | Update | General | Prep for Power Supply Stop | [LIST]
[*] Turned on the RAID attached to linux1
(its our /cvs/cds disk)
|
|
|
2621
|
Mon Feb 22 07:25:58 2010 |
rana | Update | General | Prep for Power Supply Stop | Autoburts have not been |
|
|
2622
|
Mon Feb 22 09:45:34 2010 |
josephb | Update | General | Prep for Power Supply Stop |
|
|
|
2625
|
Mon Feb 22 11:42:48 2010 |
Koji | Update | General | Prep for Power Supply Stop | Turned on the power supply for the oplev
lasers.
Turned on the power of the aux NPRO. |
|
|
2630
|
Tue Feb 23 06:47:57 2010 |
Koji | Update | General | IFO situations / low power MC lock | Work on 22nd Monday:
[MC
recovery]
- Tried to lock MC
after the computer recovery by Joe. |
|
|
2632
|
Tue Feb 23 14:56:24 2010 |
steve | Update | General | ETMX optical table mass | Our janitor dropped one 48" long
fluorescent tube on the top cover of ETMX-isct.
This accident made glasses fly all over the |
|
|
2639
|
Thu Feb 25 11:21:06 2010 |
Koji | Update | General | Tanks opened | [Steve, Bob, Joe, Zach, Alberto, Kiwamu,
Koji]
We opened the OMC-IMC access connector, |
|
|
2643
|
Fri Feb 26 11:48:36 2010 |
Koji | Update | General | MC incident beam shift | Last night I worked on the MC incident
beam such that we can hit the center of the
MC mirrors. |
|
|
2645
|
Sun Feb 28 16:45:05 2010 |
rana | Summary | General | Power ON Recovery |
Turned ON the RAID above linux1.
Hooked up a monitor and keyboard and
then turned ON linux1.
After |
|
|
2664
|
Tue Mar 9 09:32:31 2010 |
Koji | Summary | General | Wideband measurement of Fast PZT response | I have measured a wideband response
of the fast PZT in the LWE NPRO 700mW in
the Alberto's setup. |
|
|
2709
|
Wed Mar 24 12:40:25 2010 |
daisuke | Configuration | General | Periscope for green laser delivery from the BSC to PSL table | The periscope design for beam elevation
of the green beams is posted. The design
for the 90 deg steering version is also coming. |
|
|
2725
|
Mon Mar 29 01:45:26 2010 |
daisuke | Configuration | General | Periscope version B for green laser ... | Here the design of the periscope for the
90 deg steering version is posted.
straight version http://nodus.ligo.caltech.edu:8080/40m/2709 |
|
|
2746
|
Thu Apr 1 00:43:33 2010 |
Mott | Update | General | PZT response for the innolight | Kiwamu and I measure the PZT response of
the Innolight this evening from 24 kHz to
2MHz. |
|
|
2747
|
Thu Apr 1 07:17:15 2010 |
Koji | Update | General | PZT response for the innolight | The shape of the TF looks nice but the
calibration must be wrong.
Suppose 1/f slope with 10^-4 rad/V |
|
|
2748
|
Thu Apr 1 10:21:58 2010 |
Mott | Update | General | PZT response for the innolight |
|
|
|
2749
|
Thu Apr 1 10:47:48 2010 |
Koji | Update | General | PZT response for the innolight | Innolight: 100rad/V @ 100kHz =>
1e7/f rad/V => 10MHz/V
LWE: 500rad/V @ 100kHz => |
|
|
2750
|
Thu Apr 1 12:07:22 2010 |
rana | Update | General | PZT response for the innolight | The Lightwave NPRO |
|
|
2754
|
Thu Apr 1 18:05:29 2010 |
Mott | Update | General | PZT response for the innolight |
We realized that we had measured
the wrong calibration value; we were using |
|
|
2755
|
Thu Apr 1 18:44:40 2010 |
Koji | Update | General | PZT response for the innolight | Innolight 10 rad/V @ 100kHz => 1e6/f
rad/V => 1MHz/V
LWE 30 rad/V @ 100kHz => 3e6/f |
|
|
2756
|
Thu Apr 1 19:59:32 2010 |
Mott | Update | General | PZT response for the innolight |
We measured the Amplitude Modulation
response of the PZTs, to find regions with |
|
|
2763
|
Sun Apr 4 17:32:07 2010 |
Alberto | Metaphysics | General | new y-arm? |
|
|
|
2845
|
Mon Apr 26 12:24:58 2010 |
josephb | Update | General | Daily Downs update | Talked with Jay briefly this morning.
We are due another 1-U 4 core (8
CPU) machine, which is one of the ones currently |
|
|
3063
|
Thu Jun 10 10:58:02 2010 |
Koji | Update | General | LaTeXlabs | I could not dare to share my google doc
with this site...
|
|
|
3064
|
Thu Jun 10 11:10:21 2010 |
Alberto | Update | General | LaTeXlabs |
|
|
|
3082
|
Wed Jun 16 18:14:13 2010 |
Aidan | Update | General | Glass cover from overhead light smashed on PSL table | I was giving a tour of the 40m yesterday.
We were looking at the PSL table. About 30
seconds after I turned the lights on a glass |
|
|
3085
|
Fri Jun 18 13:42:52 2010 |
Koji | HowTo | General | Update your work | All SURFs (and all others as always) are
supposed to post the update of your status
on the elog. |
|
|
3103
|
Wed Jun 23 12:31:36 2010 |
Gopal | Update | General | 6.16.10-6.23.10 Weekly Update | Summary of This Week's Activities:
6/16: LIGO Orientation; First Weekly
Meeting; 40m tour with Jenne; Removed WFS |
|
|
3142
|
Wed Jun 30 11:35:06 2010 |
Gopal | Update | General | 6.23.10 - 6.30.10 Weekly Update | Summary of this Week's Activities:
6/23: LIGO Safety Tour; Simulink
Controls Tutorial |
|
|
3218
|
Wed Jul 14 12:31:11 2010 |
nancy | Update | General | Weekly Update | Summary of this week's work
Wednesday
- Aligned the mode cleaner with Koji, and
then measured the beam characteristics at |
|
|
3251
|
Tue Jul 20 15:06:48 2010 |
josephb, bob | Omnistructure | General | New speakers in ceiling in control room | After the crane training, Bob attached
speakers to the ceiling right next to the
projector, for use with presentations. |
|
|
3284
|
Sat Jul 24 13:13:41 2010 |
rana, steve, alberto | Update | General | Initial Crane Inspection reveals flaws: wiring and oil | The guy from KroneCrane (sp?) came today
and started the crane inspection on the X
End Crane. There were issues with our crane |
|
|
3290
|
Mon Jul 26 10:04:24 2010 |
steve | Update | General | Initial Crane Inspection reveals flaws: wiring, oil and imbalance |
|
|
|
3300
|
Tue Jul 27 16:33:50 2010 |
Koji | Summary | General | High school students tour | Jenne made the 40m tour for the annual
visit of 30-40 students.
c.f. |
|
|
3312
|
Wed Jul 28 16:42:21 2010 |
steve | Update | General | Crane gear box cheched |
|
|
|
3318
|
Thu Jul 29 12:31:09 2010 |
Koji | Summary | General | Lab Schedule | July
29 Thu BS chamber work: Move cable
towers / green steering mirrors / (2 TTs |
|
|
3333
|
Fri Jul 30 14:53:09 2010 |
steve | Update | General | PSL table leg upgrade |
|
|
|
3335
|
Fri Jul 30 17:52:12 2010 |
Koji | Configuration | General | Jacket | Jenne and I need our jackets. We removed
them from the Rb clock.
Thanks for making them warm. Probably |
|
|
3337
|
Fri Jul 30 19:20:15 2010 |
Alastair | Configuration | General | Jacket |
|
|
|
3348
|
Mon Aug 2 17:12:28 2010 |
Koji | Update | General | Lab schedule for the week of Aug. 2 | Aug
2 Mon - 5 Thu WFS work (Nancy)
|
|
|
3368
|
Thu Aug 5 16:18:37 2010 |
Alastair | Update | General | clocks still not locked fully - hut removed | The rubidium clocks are still not quite
locked together, though it is clear that
the beat frequency has dropped a lot since |
|
|
3377
|
Fri Aug 6 16:20:08 2010 |
rana | Update | General | clocks still not locked fully - phase shifted | I tried to get the clocks to be closer
to 90 deg for the relative phase by adding
some cable length to one of the lines, but |
|
|
3378
|
Fri Aug 6 17:47:36 2010 |
steve | Summary | General | cranes load tested at 1998 lbs |
|
|
|
3394
|
Tue Aug 10 17:21:48 2010 |
steve | Update | General | PSL optical table is at 30" height | Mike Gerfen, Koji and Steve,
Our old ( 6 x 10 x 1 ) ft Newport |
|
|
3452
|
Fri Aug 20 20:36:05 2010 |
Alastair | Update | General | Elog | Elog was down, I restarted it. |
|