| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
1017
|
Wed Oct 1 23:05:14 2008 |
Yoichi | Update | PSL | ISS RIN spectra | Stefan, Yoichi
We took relative intensity noise (RIN) spectra |
|
|
1016
|
Wed Oct 1 12:09:25 2008 |
Alberto | Configuration | Computers | "StochMon" added to the Alarm Handler | [quote]John, Alberto,
we added the four channels of the RF Amplitude |
|
|
1015
|
Wed Oct 1 12:05:58 2008 |
Alberto | Configuration | Computers | "StochMon" added to the Alarm Handler | John, Alberto,
we added the four channels of the RF Amplitude |
|
|
1014
|
Wed Oct 1 02:54:03 2008 |
rob | Update | Locking | bad |
Tried the spring-y side tonight with a discouraging
lack of progress. There were several locks |
|
|
1013
|
Wed Oct 1 02:47:53 2008 |
rana | Update | PSL | PSL ERR & LODET: Too much offset | Looks like there is an anomolous mixer offset
correlated with the increase in the LO level.
This may be leading to crazy offset locking |
|
|
1012
|
Wed Oct 1 02:10:03 2008 |
rana | Update | IOO | MZ is going bad | Here's a 2 day trend of the MZ. You can see
that there is something bad with ERR - it
should really be going to zero.
|
|
|
1011
|
Wed Oct 1 00:24:54 2008 |
rana | Update | Locking | last night | I had mistakenly left the MC boost off during
my FAST investigations. The script is now
restored.
|
|
|
1010
|
Tue Sep 30 19:50:27 2008 |
Jenne | Update | PSL | Quicky Summary - more details later | Quicky summary for now, more details later
tonight / tomorrow morning:
|
|
|
1009
|
Tue Sep 30 13:43:43 2008 |
rob | Update | Locking | last night | Steady progress again in locking again last
night. Initial acquisition of DRMI+2ARMs
was working well.
|
|
|
1008
|
Mon Sep 29 17:53:33 2008 |
Yoichi | Update | PSL | ISS update | ISS has been saturating easily.
Today I opened the PSL enclosure to inspect
the ISS box. Then I found that the sensor |
|
|
1007
|
Mon Sep 29 15:09:36 2008 |
steve | Update | PSL | almost 4 yrs plot of power & temps | The water chiller is normally running 1.5
C warmer than the laser head temp.
When control room temp is stable and PEM-count_temp |
|
|
1006
|
Mon Sep 29 13:33:39 2008 |
josephb | Configuration | Computers | Gigabit network finished and conlog available on Nodus | The last 100 Mb unmounted hub has been removed
(or at least of the ones I could find).
We should be on a fully gigabit network with |
|
|
1005
|
Mon Sep 29 13:23:40 2008 |
rob | Summary | PSL | Laser chiller running a little hot | [quote]I looked at it some last night and
my suspicion was the ISS. Whenever the ISS
switch came on the FAST got a kick.
|
|
|
1004
|
Mon Sep 29 11:17:14 2008 |
steve | Update | SAFETY | horizontal viewports are protected with lexan | The four horizontal viewports of arms are
protected
by 3/8" thick, 8.5" OD Lexan disk of MR10 |
|
|
1003
|
Mon Sep 29 01:19:40 2008 |
rana | Summary | PSL | Laser chiller running a little hot | I looked at it some last night and my suspicion
was the ISS. Whenever the ISS switch came
on the FAST got a kick.
|
|
|
1002
|
Fri Sep 26 19:18:39 2008 |
Jenne | Update | IOO | MC2 is having a bad day | As Steve mentioned earlier in today's elog,
MC2 keeps ringing up for no clear reason.
It is definitely only MC2 that is ringing |
|
|
1001
|
Fri Sep 26 19:08:43 2008 |
rana | Configuration | PSL | Refcav Trans: PD + Camera + Dumps | I went out to improve the Refcav trans path.
I removed all ND filters to get rid of the |
|
|
1000
|
Fri Sep 26 18:35:17 2008 |
Jenne | Update | PSL | PMC filter is out for tuning | The PMC's new Pomona Box filter is out for
tuning. I'd like to get the notch right
on the 18.3kHz, rather than being off in |
|
|
999
|
Fri Sep 26 16:13:57 2008 |
rana | Update | IOO | MC_L / MC_F crossover | We were trying to understand why the FAST_F
signal had such large excursions (~1V ~ 5
MHz).
|
|
|
998
|
Fri Sep 26 16:08:39 2008 |
rob | Update | Locking | some progress | There's been good progress in locking the
last couple of nights. A lot of time was
wasted before I found that
|
|
|
997
|
Fri Sep 26 14:10:21 2008 |
Yoichi | Configuration | Computers | Lab laptops maintenance | The linux laptops were unable to write to
the NFS mounted directories.
That was because the UID of the controls |
|
|
996
|
Fri Sep 26 09:05:47 2008 |
steve | Update | SUS | MC2 damping restored | The MC2 sus damping was restored. |
|
|
995
|
Fri Sep 26 00:19:54 2008 |
Jenne | Update | PSL | Filter-action with the PMC | Written, but not posted on 24Sept2008:
|
|
|
994
|
Thu Sep 25 17:14:31 2008 |
rana | Configuration | General | new sitemap | |
|
|
993
|
Thu Sep 25 15:24:05 2008 |
Yoichi | Update | IOO | MC_F VCO calibration | I calibrated the VCO driving the AOM for the
AO path of the MC feedback.
|
|
|
992
|
Thu Sep 25 14:03:08 2008 |
josephb | Configuration | Computers | | [quote]
We (Joe) need to buy a GigE card for linux1
and to also set up conlog and conlogger to |
|
|
991
|
Thu Sep 25 10:48:29 2008 |
Yoichi | Update | PSL | FSS calibration again | I did a calibration of the FSS error signal
again with a different method.
This time, I swept the laser frequency with |
|
|
990
|
Thu Sep 25 03:12:13 2008 |
rana | Summary | Computers | conlog and linux1 | It would be nice to have conlog from outside.
Right now its on linux1 and so its unavailable.
To
|
|
|
989
|
Thu Sep 25 02:35:21 2008 |
rana | Summary | PSL | FAST is moving alot | It looks like the FAST signal has started
moving a lot - this is partly what inspired
us to tune the SLOW loop.
|
|
|
988
|
Wed Sep 24 19:13:06 2008 |
rana | Configuration | Computer Scripts / Programs | updatedb & locate: megatron & rosalba | I ran [I]updatedb[/I] as root today on megatron
and rosalba just before the meeting.
It finished at ~14:10 on both machines so |
|
|
987
|
Wed Sep 24 17:57:04 2008 |
Alberto | Update | General | ABSL: FSS Slow Actuator Control | Rana, Alberto
Today when I started working with the PLL |
|
|
986
|
Tue Sep 23 15:28:06 2008 |
pete | Configuration | PSL | new 21.5 MHz FSS reference installed | The new 21.5 MHz FSS reference is now installed
in the rack with the 7 Sorensen PS. Both
outputs give 18.7 dBm. The MC seems happy.
|
|
|
985
|
Tue Sep 23 13:25:07 2008 |
rob | Update | Locking | a bit better | I've been spending time working on the short
DOF loops (PRC,MICH,SRC) in an attempt to
make the
|
|
|
984
|
Tue Sep 23 11:17:59 2008 |
steve | Update | PSL | PMC scattering spot | The PMC output side has a new madly scattering
spot at chamfer 2 o'clock position |
|
|
983
|
Tue Sep 23 00:47:24 2008 |
Yoichi | HowTo | Computers | Network GPIB | [quote]
I wrote a new script called "netgpibdata.py"
which works similarly as "getgpibdata.py".
|
|
|
982
|
Mon Sep 22 22:24:19 2008 |
rana | Configuration | PSL | bad FSS | [quote]The MC refl power was going up and
the FSS PC drive was so large that I had
to turn up the FSS...[/quote]
|
|
|
981
|
Mon Sep 22 21:54:05 2008 |
rana | Update | ASS | New Wiener result with x10 gain in ACC | The 2 attached PDF files show the performance
of the Wiener filter code on 2 hours of data
with a 4000 tap filter on 64 Hz data. All |
|
|
980
|
Mon Sep 22 21:30:06 2008 |
rana | Configuration | PSL | bad FSS | The MC refl power was going up and the FSS
PC drive was so large that I had to turn
up the FSS
|
|
|
979
|
Mon Sep 22 20:00:35 2008 |
Alberto | Update | General | ABSL: running measurement | I'm leaving the X arm locked on the TEm01
mode while a measurement is running. Just
please wait for 40 minute if you need the |
|
|
978
|
Mon Sep 22 18:54:54 2008 |
Jenne | Update | PSL | PMC transfer functions with various brick-on-top configurations | Attached below is a graphical summary of different
things that I have tried putting on the PMC
to reduce the noise in the loop. The motivation |
|
|
977
|
Mon Sep 22 16:51:27 2008 |
Yoichi | HowTo | Computers | Network GPIB | I was able to make the wireless connected
GPIB interface work with SR785.
Now you can download data from SR785 through |
|
|
976
|
Mon Sep 22 15:02:45 2008 |
rana | Frogs | Treasure | Mantis found outside the 40m door at night | |
|
|
975
|
Mon Sep 22 12:06:58 2008 |
rob | Update | SUS | ITMY UL OSEM |
Last week I found the ITMY UL OSEM dead. |
|
|
974
|
Fri Sep 19 11:48:14 2008 |
steve | Update | Computers | old hubs can make one happy | Joseph finds a XIX century bottle neck hub:
CentreCOM 3624TR 10Base-T
and happily replaces it with Netgear GS724T |
|
|
973
|
Fri Sep 19 11:21:45 2008 |
josephb | Configuration | Computers | Nameserver and Rosalba | I tried modifying the nsswitch.conf file to
include going to dns in addition to local
files for everything (services, network, |
|
|
972
|
Fri Sep 19 09:49:42 2008 |
Yoichi | Update | Computers | svn is old | The problem below is fixed now.
The cause was .svn/entries and .svn/format
had wrong version number "9" where it had |
|
|
971
|
Fri Sep 19 08:09:55 2008 |
steve | Update | PSL | psl HEPAs turned on | I have just turned on the PSL HEPA filters
at 60% operational speed. |
|
|
970
|
Fri Sep 19 01:55:41 2008 |
rana | Summary | SUS | SUS Drift Screen Updated | I wrote 2 matlab scripts to update the SUS
DRIFT screen:
|
|
|
969
|
Fri Sep 19 00:18:14 2008 |
rana | Update | Computers | svn is old | [CODE]linux2:mDV>ssh nodus
Password:
Last login: Fri Sep 19 00:11:44 2008 from |
|
|
968
|
Fri Sep 19 00:06:54 2008 |
rana | Update | IOO | MC_F: Too much frequency noise around 100 Hz | WE noticed this excess again in MC_F. We tried
recentering the WFS, but no effect.
|
|