| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
549
|
Fri Jun 20 08:30:27 2008 |
stiv | Update | Photos | 40m summer line up 2008 | atm1: John, Alberto, Yoichi, Koji, Masha,
and Sharon
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|
|
14008
|
Fri Jun 22 15:22:39 2018 |
sudo | Update | CDS | DTT working |
Quote:
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|
|
4371
|
Wed Mar 2 22:57:57 2011 |
suresh | Summary | General | Stuff from LLO | Here is a partial list of stuff which is
being packed at LLO to be shipped to CIT.
The electronics ckt boards are yet to be |
|
|
4381
|
Mon Mar 7 17:58:14 2011 |
suresh | Summary | General | Stuff from LLO |
Here is the updated list. These lists were
used as packing lists and therefore are organised |
|
|
4548
|
Wed Apr 20 22:29:07 2011 |
suresh | Update | RF System | Plan for LSC rack | The suggested layout of the 1Y2 Rack is
shown below.
To simplify the wiring, I have largely |
|
|
5002
|
Wed Jul 20 17:43:33 2011 |
suresh | Update | Computers | restarted the frame builder | I restarted the frame builder in the last
15mins.
I was making a change to a DAC channel |
|
|
5013
|
Thu Jul 21 16:05:15 2011 |
suresh | Update | IOO | PSL beam into MC realigned | I realigned the PSL beam going
into the MC.
The MC beam was realigned so as to |
|
|
6016
|
Sat Nov 26 07:22:20 2011 |
suresh | Update | Computers | | c1sus has been shutdown so that the optics
dont bang around. This is because the
watch dogs are not working. |
|
|
6438
|
Thu Mar 22 17:41:15 2012 |
suresh | Update | CDS | c1scx and c1scy not properly running |
|
|
|
7950
|
Mon Jan 28 21:36:44 2013 |
tall guy | Frogs | General | small people on notice | If I catch anyone putting small booties
into the large bootie bin, I will make said
person eat small booties. |
|
|
3812
|
Thu Oct 28 19:10:26 2010 |
tara | Update | Electronics | TTFSS for 40m | I keep a set of new TTFSS for 40m in electronic
cabinet along the North arm.
The set number is #6. It is working |
|
|
4512
|
Mon Apr 11 20:03:05 2011 |
tara | Update | Electronics | TTFSS for 40m | I brought TTFSS set #7 to 40m and kept
it in the electronic cabinet.
note that Q4 transistor has not been |
|
|
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 |
|
|
7904
|
Wed Jan 16 10:57:37 2013 |
tara | Summary | IOO | Noise budget for MC | I calculated thermal noise in mode cleaner
(MC) mirrors and compared it with the measured
MC noise. Thermal noise won't be a significant |
|
|
3163
|
Wed Jul 7 00:15:29 2010 |
tara,Rana | Summary | PSL | power spectral density from RefCav transmitted beam | I measured
the RC transmitted light signals here at
the 40m. I made all connections through |
|
|
3210
|
Tue Jul 13 21:04:49 2010 |
tara,rana | Summary | PSL | Transfer function of FSS servo | I
measured FSS's open loop transfer function.
|
|
|
3570
|
Mon Sep 13 22:51:07 2010 |
tara,valera | Configuration | PSL | beam scan for RCAV | On Friday, Valera and I calculated the
modematching for reference cavity from AOM.
We scan the beam profile where the |
|
|
14105
|
Thu Jul 26 01:52:01 2018 |
terra | Update | Thermal Compensation | heater work update | Just a quick update: over the past few
days we've taken (at least) 5 scans around
each peak [carrier - HOM3] at 9.4V/0.8A, |
|
|
14110
|
Sat Jul 28 00:45:11 2018 |
terra, sandrine | Summary | Thermal Compensation | Heater measurements overview | [Sandrine, Koji, Terra]
Summary: We
completed multiple scans at different heating |
7x |
|
340
|
Sun Feb 24 10:51:58 2008 |
tf | Frogs | Environment | 40m in phdcomics? | [url=http://www.phdcomics.com/comics/archive.php?comicid=977][img]http://www.phdcomics.com/comics/archive/phd021308s.gif[/img][/url] |
|
|
28
|
Mon Oct 29 23:25:42 2007 |
tobin | Software Installation | CDS | frames mounted | I mounted the frames directory on mafalda
and linux3. It's intentionally not listed
in the /etc/fstab so that an fb crash won't |
|
|
31
|
Tue Oct 30 16:55:40 2007 |
tobin | Routine | | Drag-wiping perfected | Steve, Tobin
Steve procured an assortment of syringes |
|
|
32
|
Tue Oct 30 19:32:13 2007 |
tobin | Problem Fixed | Computers | conlogger restarted | I noticed that the conlogger wasn't running.
It looks like it hasn't been running since
October 11th. I modified the restart_conlogger |
|
|
33
|
Tue Oct 30 20:15:24 2007 |
tobin | Other | Environment | earthquake | Rana, Tobin
Largish (M5.6) earthquake in San Francisco |
|
|
39
|
Wed Oct 31 15:02:59 2007 |
tobin | Routine | IOO | Mode Cleaner Mode Tracking | I processed the heterodyned mode cleaner data
yesterday, tracking the three 28 kHz modes
corresponding to MC1, MC2, and MC3. Unfortuntately |
|
|
45
|
Thu Nov 1 11:45:30 2007 |
tobin | Configuration | IOO | Mode cleaner drag-wiping | Andrey, Bob, David, John Miller, Rana, Rob,
Steve, Tobin
|
|
|
71
|
Tue Nov 6 16:48:54 2007 |
tobin | Configuration | Computers | scopes on the net | I configured our two 100 MHz Tektronix 3014B
scopes with IP addresses: 131.215.113.24
([url=http://scope0/]scope0[/url]) and 113.215.113.25 |
|
|
72
|
Tue Nov 6 18:18:15 2007 |
tobin | Configuration | Computers | I broke (and fixed) conlogger | It turns out that not only restart_conlogger,
but also conlogger itself checks to see that
it is running on the right machine. I had |
|
|
73
|
Tue Nov 6 23:45:38 2007 |
tobin | Configuration | Computers | tektronix scripts! | I cooked up a little script to fetch the data
from the networked Tektronix scope. Example
usage:
|
|
|
80
|
Wed Nov 7 14:05:59 2007 |
tobin | Configuration | IOO | MC ringdown | Modeling the mode cleaner as a simple cavity
with all losses lumped together, we expect
the cavity power to be
|
|
|
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.
|
|
|
85
|
Thu Nov 8 18:44:01 2007 |
tobin | Configuration | PSL | ISS | Tobin, Rob
With the Sense PD blocked, I adjusted 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. |
|
|
101
|
Wed Nov 14 12:47:19 2007 |
tobin | Update | PSL | ISS | John, Tobin
With John's notch filter installed and the |
|
|
103
|
Wed Nov 14 17:50:00 2007 |
tobin | Update | PSL | ISS | Here's the current wiring between the ISS
and its PDs:
|
|
|
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 |
|
|
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 |
|
|
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 |
|
|
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. |
|
|
112
|
Fri Nov 16 14:31:43 2007 |
tobin | Update | Computers | op140 disks | Phil Ehrens stopped by and took op140's disks. |
|
|
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 |
|
|
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.
|
|
|
127
|
Tue Nov 27 20:47:00 2007 |
tobin | Update | PSL | FSS | Rana, Tobin
We looked at the RF PD signal to the FSS |
|
|
136
|
Wed Nov 28 19:44:18 2007 |
tobin | Update | PSL | HEPA | I found the HEPA turned off completely. I
turned it on. |
|
|
137
|
Wed Nov 28 21:51:52 2007 |
tobin | Configuration | PSL | ISS | I replaced the front-end differential receivers
for the ISS's "inner-loop" sensor and monitor
diode inputs with lower-noise [url=http://focus.ti.com/docs/prod/folders/print/ths4131.html]THS4131[/url]'s |
|
|
140
|
Thu Nov 29 14:29:22 2007 |
tobin | Configuration | Computers | linux1 httpd/conlogger fixed | I think I fixed the [url=http://linux1/cgi-bin/conlog_web.pl]conlogger
web interface on linux1[/url].
|
|
|
158
|
Mon Dec 3 16:24:47 2007 |
tobin | HowTo | Computers | GNU screen | [url=http://jmcpherson.org/screen.html]GNU
screen[/url] is a utility that can be quite
handy for managing long-running psuedo-interactive |
|
|
159
|
Mon Dec 3 17:55:39 2007 |
tobin | HowTo | Computer Scripts / Programs | linemon | Matlab's Signal Processing toolbox has a [url=http://www.mathworks.com/access/helpdesk/help/toolbox/signal/index.html?/access/helpdesk/help/toolbox/signal/spectrum.html]set
of algorithms for identifying sinusoids in
data[/url]. Some of them (e.g., [url=http://www.mathworks.com/access/helpdesk/help/toolbox/signal/index.html?/access/helpdesk/help/toolbox/signal/rootmusic.html&http://www.mathworks.com/cgi-bin/texis/webinator/search/]rootmusic[/url]) |
|
|
162
|
Mon Dec 3 22:20:09 2007 |
tobin | Configuration | PSL | ISS | I replaced the painfully short 1' cables on
the ISS photodiodes with luxurious five foot
cables, made by chopping a ten foot Amphenol |
|
|
163
|
Tue Dec 4 23:16:35 2007 |
tobin | Update | PSL | ISS | I was confused to find that I could increase
the ISS gain slider all the way from 15dB
to 30dB without seeing much of any increase |
|