| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
134
|
Wed Nov 28 17:41:34 2007 |
rob | Update | PSL | FSS again | I investigated the FSS a bit more today.
I looked at the signals coming out of the
FSS frequency reference, and saw that both |
|
|
133
|
Wed Nov 28 17:15:26 2007 |
rana | Configuration | SUS | ETMY damping / watchdogs | Steve has noted that ETMY was often tripping
its watchdog. I saw this again today.
|
|
|
132
|
Wed Nov 28 16:46:28 2007 |
rana | Configuration | Computers | scientific linux 5.0 | I tried installing Scientific Linux on Tiramisu.
The installation process was so bad (really)
that I quit after 15 minutes. Its back to |
|
|
131
|
Wed Nov 28 16:18:15 2007 |
Alberto | Metaphysics | Environment | so clean you can eat on it | I tidied up the desks in the lab, brought
the Spectrum Analyzers back to the Salumeria
(you don't want to know about that), sorted |
|
|
130
|
Wed Nov 28 12:43:53 2007 |
Andrey | Bureaucracy | | Here was the PDF-file of my presentation |
I was making a report with powerpoint presentation
during that Wednesday's 40-m meeting.
|
|
|
129
|
Wed Nov 28 08:47:29 2007 |
steve | Omnistructure | VAC | rga is out of order | The rga is not working since Nov 10
The controller is broken.
pd65-m-d23 |
|
|
128
|
Wed Nov 28 04:21:46 2007 |
rana | Update | PSL | FSS | [quote]Rana, Tobin
[SIZE=1]
We looked at the RF PD signal to the FSS |
|
|
127
|
Tue Nov 27 20:47:00 2007 |
tobin | Update | PSL | FSS | Rana, Tobin
We looked at the RF PD signal to the FSS |
|
|
126
|
Tue Nov 27 16:18:58 2007 |
rob | Configuration | IOO | MC loop | Reduced the common gain to 22dB in the [COLOR=blue]mcup[/COLOR]
script, so that the WFS would not blow the
lock. The above measure of the OLG was done |
|
|
125
|
Tue Nov 27 15:47:17 2007 |
rob | Configuration | IOO | MC loop | After the FSS running pretty quick, I checked
the MC loop. I used TPA 1&2.
|
|
|
124
|
Tue Nov 27 15:45:08 2007 |
rob | Configuration | PSL | FSS loop |
It's unclear (to me, at least) what was the
end result of the FSS path tweaking before |
|
|
122
|
Mon Nov 26 10:17:31 2007 |
steve | Omnistructure | SUS | etmy sus damping restored | 20 days plot is showing etmy loosing damping
4 times.
I zoomed in with each event. Three of them |
|
|
121
|
Wed Nov 21 14:31:41 2007 |
rob | Update | PSL | FSS twiddle |
I `tweaked' the FSS path today. Here's what
I did:
|
|
|
120
|
Tue Nov 20 18:35:20 2007 |
John | HowTo | Computers | MatLab in Emacs | If you can't get MatLab to run in emacs try
adding the following to the .emacs file
|
|
|
119
|
Tue Nov 20 18:02:54 2007 |
John | Summary | Computers | PSL_Main screen | I've updated the PSL_MAIN screen. The old
version may be found in cvs/cds/caltech/medm/old/medm/psl. |
|
|
118
|
Tue Nov 20 13:06:57 2007 |
tobin | Configuration | Computers | linux1 has new disk | Alex put the new hard disk into linux1 along
with a fresh install of linux (CentOS).
The old disk was too damaged to copy.
|
|
|
117
|
Tue Nov 20 11:10:07 2007 |
tobin | Update | Computers | epics access from matlab | I installed "[url=http://www.slac.stanford.edu/~strauman/labca/]labca[/url]",
which allows [b]direct access to EPICS channels
from within Matlab[/b]. It comes with both |
|
|
116
|
Tue Nov 20 10:11:33 2007 |
John | Summary | PSL | PMC pole measurements | We measured the PMC pole in the following
way.
|
|
|
115
|
Mon Nov 19 14:32:10 2007 |
steve | Bureaucracy | SAFETY | grad student safety training | John Miller and Alberto Stochino has received
the 40m safety bible.
They still have to read the laser operation |
|
|
114
|
Mon Nov 19 14:19:25 2007 |
steve | Omnistructure | PEM | jackhammer | The construction personal successfully jackhemmered
a fence around the "Drever's parking slot"
There is no parking space available close |
|
|
113
|
Fri Nov 16 18:46:49 2007 |
steve | Bureaucracy | PSL | MOPA was turned off & on | The "Mohana" boys scouts and their parents
visited the 40m lab today.
The laser was turned off for their safety.
|
|
|
112
|
Fri Nov 16 14:31:43 2007 |
tobin | Update | Computers | op140 disks | Phil Ehrens stopped by and took op140's disks. |
|
|
111
|
Fri Nov 16 14:11:26 2007 |
tobin | Update | Computers | op140 | Alan called to say that Phil Ehrens will be
coming by to take [b]op140[/b] off our hands. |
|
|
110
|
Fri Nov 16 11:27:18 2007 |
tobin | Update | Computers | script fix | I added a tidbit of code to "LIGOio.pm" that
fixes a [url=http://lhocds.ligo-wa.caltech.edu:8000/40m/EZCA]problem
with ezcastep on Linux[/url]. Scripts such |
|
|
109
|
Thu Nov 15 18:37:06 2007 |
tobin | Update | Computers | possible replacement for linux1's disk | It looks like the existing disk in linux1
is a Seagate ST380013A (this can be found
either via the smartctl utility or by looking |
|
|
108
|
Thu Nov 15 18:36:48 2007 |
John | Summary | | PSL table work | I've rotated the lambda/2 plate to 340deg
(from 6 deg) and blocked one arm of the Mach-Zender.
Undo both if you need to. |
|
|
107
|
Thu Nov 15 18:23:55 2007 |
John | HowTo | Computers | Swap CAPS and CTRL on a Windows 2000/XP machine | I've swapped ctrl and caps on the four control
room Windows machines. Right ctrl is unchanged.
|
|
|
106
|
Thu Nov 15 18:06:06 2007 |
tobin | Update | Computers | alex: linux1 root file system hard disk's dying | I just noticed that Alex made [url=http://www.ldas-sw.ligo.caltech.edu/ilog/pub/ilog.cgi?group=40m&date_to_view=11/14/2007&anchor_to_scroll_to=2007:11:14:20:00:29-aivanov]an
entry in the old ilog[/url] yesterday, saying:
"[color=red][b]Looks like linux1 root filesystem |
|
|
105
|
Thu Nov 15 17:09:37 2007 |
pkp | Update | OMC | Vertical Transfer functions with no cables attached. | [Norna Pinkesh]
The cables connecting all the electronics |
|
|
104
|
Thu Nov 15 04:18:11 2007 |
John | Summary | PSL | PMC cavity pole measurements | In connection with our work on the ISS I attempted
to measure the PMC cavity pole.
|
|
|
103
|
Wed Nov 14 17:50:00 2007 |
tobin | Update | PSL | ISS | Here's the current wiring between the ISS
and its PDs:
|
|
|
102
|
Wed Nov 14 16:54:54 2007 |
pkp | Update | OMC | Much better looking vertical transfer functions | [Norna Pinkesh]
So after Chub did his wonderful mini-surgery |
|
|
101
|
Wed Nov 14 12:47:19 2007 |
tobin | Update | PSL | ISS | John, Tobin
With John's notch filter installed and the |
|
|
100
|
Wed Nov 14 12:33:35 2007 |
tobin | AoG | Environment | construction | The construction crews are running a jack-hammer
right outside of the control room. |
|
|
99
|
Wed Nov 14 07:48:38 2007 |
norna | Omnistructure | OMC | OMC Cable dressing | [Snipped from an email]
1) Last Friday Pinkesh and I set the OMC |
|
|
98
|
Tue Nov 13 14:33:40 2007 |
John | Update | PSL | ISS filter | The transfer function from 'In Loop Error
Point Monitor' to TP3 the filter out test
point on the ISS board.
|
|
|
97
|
Mon Nov 12 23:44:19 2007 |
John | Update | PSL | ISS | [quote]
After John soldered a 3.7 MHz notch filter
onto the ISS board, I took a quick TF and |
|
|
96
|
Mon Nov 12 15:18:34 2007 |
rob | Update | PSL | ISS |
After John soldered a 3.7 MHz notch filter
onto the ISS board, I took a quick TF and |
|
|
95
|
Mon Nov 12 15:05:49 2007 |
rob | Configuration | PSL | FSS |
Spent a bit of time fiddling with the FSS
again today. In a not-particularly-systematic |
|
|
94
|
Mon Nov 12 14:09:19 2007 |
rob | DAQ | General | tpman dead on fb40m | The testpoint manager was dead on fb40m.
I know I re-started it sometime after the
power outage, so something must have killed |
|
|
93
|
Mon Nov 12 10:53:58 2007 |
pkp | Update | OMC | Vertical Transfer functions | [Norna Sam Pinkesh]
These plots were created by injected white |
|
|
92
|
Sun Nov 11 21:21:04 2007 |
rana | HowTo | Computers | New DV | To use the new ligoDV (previously GEO DV)
to look at 40m data, open up a matlab, set
up for mDV as usual,
|
|
|
91
|
Sun Nov 11 21:05:55 2007 |
rana | HowTo | SUS | MC Touching or not | I wrote a script: [I]SUS/freeswing-mc.csh[/I],
which gives the MC mirrors the appropriate
kicks
|
|
|
90
|
Fri Nov 9 21:36:14 2007 |
rob | Configuration | PSL | FSS | rob, rana
We looked at the FSS a bit today. The most |
|
|
89
|
Fri Nov 9 17:33:33 2007 |
rob | Configuration | PSL | ISS |
The 3.7 MHz is actually on the light. It's
the beat between the 29.5 MHz sidebands and |
|
|
88
|
Fri Nov 9 09:37:55 2007 |
steve | Update | PSL | head temp hiccup | Just an other PSL-126MOPA_HTEMP hiccup.
The water chiller is at 20.00C |
|
|
87
|
Fri Nov 9 00:23:12 2007 |
pkp | Update | OMC | X and Z resonances | I got a couple of resonance plots going for
now. I am still having trouble getting the
Y measurement going for some reason. I will |
|
|
86
|
Fri Nov 9 00:01:24 2007 |
waldman | Omnistructure | OMC | OMC mechanical resonances (Tap tap tappy tap) | [Pinkesh, Aidan, Sam]
We did a tap-tap-tappy-tap test of the OMC |
7x |
|
85
|
Thu Nov 8 18:44:01 2007 |
tobin | Configuration | PSL | ISS | Tobin, Rob
With the Sense PD blocked, I adjusted the |
|
|
84
|
Thu Nov 8 15:57:53 2007 |
tobin | Configuration | PSL | shelf removed | I removed the sheet metal shelf from the PSL
enclosure, for easier access to the ISS.
|
|