| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
2047
|
Sat Oct 3 14:53:24 2009 |
rob | Update | Locking | more progress | Late last night after the ETMY settled
down from the quake I made some more progress
in locking, with the handoff to RF CARM succeeding |
|
|
2046
|
Fri Oct 2 18:26:32 2009 |
rob | AoG | Environment | earthquake | quake coming through. I've re-enabled
optic damping (except ETMY), and left off
the oplevs for now. We can do a resonant-f |
|
|
2045
|
Fri Oct 2 18:04:45 2009 |
rob | Update | CDS | DTT no good for OMC channels | I took the output of the OMC DAC and plugged
it directly into an OMC ADC channel to see
if I could isolate the OMC DAC weirdness |
|
|
2044
|
Fri Oct 2 17:00:06 2009 |
Alberto | Update | General | 40m Update - Requirements on the 5x Frequency Multiplier | Here's the gist of the requirements on
the 5x frequency multiplier for the upgrade
(see attachemnt - despite the preview down |
|
|
2043
|
Fri Oct 2 15:24:29 2009 |
sanjit, rana | Summary | IOO | mcwfs centered | we set the offsets for the MCWFS DC and
for the MCWFS demod outputs and then turned
off the lights put the MZ at half fringe |
|
|
2042
|
Fri Oct 2 15:11:44 2009 |
rob | Update | Computers | c1susvme2 timing problems update update | It got worse again, starting with locking
last night, but it has not recovered.
Attached is a 3-day trend of SRM cpu load |
|
|
2041
|
Fri Oct 2 14:52:55 2009 |
rana | Update | Computers | c1susvme2 timing problems update | The attached shows the 200 day '10-minute'
trend of the CPU meters and also the room
temperature. |
|
|
2040
|
Fri Oct 2 02:55:07 2009 |
rob | Update | Locking | more progress | More progress with locking tonight, with
initial acquisition and power ramps working.
The final handoff to RF CARM still needs |
|
|
2039
|
Thu Oct 1 19:18:24 2009 |
Koji | Update | SUS | all suspensions undamped | Ops. I restored the damping of the suspensions
at around 16:30.
|
|
|
2038
|
Thu Oct 1 19:04:05 2009 |
Koji | Update | MZ | MZ work done (Re: MZ Work from 13:00-) | MZ work has been done. I did not change
anything on the circuit.
Recently we observed that the MZ |
|
|
2037
|
Thu Oct 1 15:42:55 2009 |
rob | Update | Locking | c1susvme2 timing problems update |
|
|
|
2036
|
Thu Oct 1 14:22:28 2009 |
rob | Update | SUS | all suspensions undamped |
|
|
|
2035
|
Thu Oct 1 13:12:41 2009 |
Koji | Update | MZ | MZ Work from 13:00- | I will investigate the MZ board. I will
unlock MZ (and MC). |
|
|
2034
|
Thu Oct 1 11:39:47 2009 |
Jenne | Update | SUS | MC2 damping restored again |
|
|
|
2033
|
Thu Oct 1 10:23:00 2009 |
steve | Update | PSL | MC2 damping restored again | The EQ did not change the input beam
pointing. All back to normal, except MC2
wachdogs tripped again. |
|
|
2032
|
Thu Oct 1 09:36:09 2009 |
Koji | Update | MZ | MZ relocked (Re:suspention damping restored and MZ HV stuck) | MZ stayed unlocked. Now It was relocked.
|
|
|
2031
|
Thu Oct 1 08:37:43 2009 |
steve | Update | SUS | suspention damping restored and MZ HV stuck | Earthquake
of magnitude 5.0 shakes ETMY loose.
MC2 lost it's damping later. |
|
|
2030
|
Thu Oct 1 03:12:56 2009 |
rob | Update | Locking | some progress | Good progress in IFO locking tonight, with
the arm powers reaching about half the full
resonant maximum. |
|
|
2029
|
Wed Sep 30 17:49:21 2009 |
Jenne | Update | Adaptive Filtering | New UP/DOWN scripts for OAF | [Sanjit, Jenne]
The up and down scripts accessible
from the OAF (still C1:ASS-TOP) screen are |
|
|
2028
|
Wed Sep 30 12:21:08 2009 |
Jenne | Update | Computers | restarted the elog | I'm blaming Zach on this one, for trying
to upload a pic into the ATF elog (even though
he claims it was small....) Blame assigned: |
|
|
2027
|
Wed Sep 30 02:01:28 2009 |
rob | Update | Locking | week | It's been a miserable week for lock acquisition,
with each night worst than the last.
The nadir was around Sunday night, when I |
|
|
2026
|
Wed Sep 30 01:04:56 2009 |
rob | Update | Computers | grief | much grief. somehow a burt restore
of c1iscepics failed to work, and so the
LSC XYCOM settings were not correct. |
|
|
2025
|
Tue Sep 29 23:43:49 2009 |
rana | AoG | all down cond. | Cosmic | |
|
|
2024
|
Tue Sep 29 23:43:46 2009 |
rob | Update | SUS | ITMY UL OSEM | We had a redo of elog entry 975
tonight. The noisy OSEM was fixed by
jiggling the rack end of the long cable. |
|
|
2023
|
Tue Sep 29 22:51:20 2009 |
Koji | Update | MZ | Possible gain mis-calibration at other places (Re: MZ work done) | Probably there is the same mistake for
the PMC gain slider. Possibly on the FSS
slider, too??? |
|
|
2022
|
Tue Sep 29 21:51:32 2009 |
Koji | Update | MZ | MZ work done : some noise checking | The previous "+15" was Vctrl
= 0.25 [V]. Which was +18 dB.
|
|
|
2021
|
Tue Sep 29 21:37:09 2009 |
rana | Update | MZ | MZ work done : some noise checking | Since we used to run with a gain slider
setting of +15 dB on the MZ, I wanted to
check that the new setting of +30dB was OK. |
|
|
2020
|
Tue Sep 29 18:21:41 2009 |
Koji | Update | MZ | MZ work done | The
MZ work completed. I replaced
the bad cross connection terminal. The gain |
|
|
2019
|
Tue Sep 29 16:14:44 2009 |
rob | Configuration | Electronics | Rob is breaking stuff.... |
|
|
|
2018
|
Tue Sep 29 12:47:08 2009 |
Koji | Update | MZ | MZ unlocked | 12:45 I started the work on MZ. Thus the
MZ was unlocked.
Found the bad connection on the FLKM |
|
|
2017
|
Tue Sep 29 10:44:29 2009 |
Koji | Update | MZ | MZ investigation | Rana, Jenne, Koji
Last night we checked MZ. The apparent
thing we found was the gain slider does not |
|
|
2016
|
Tue Sep 29 01:50:10 2009 |
rob | Configuration | LSC | new modulation frequencies | Mode cleaner length measured tonight.
33196198 |
|
|
2015
|
Mon Sep 28 23:44:18 2009 |
Koji | Omnistructure | SAFETY | Crappy power outlet | Jenne, Koji
Tonight we found that the wireless
for Martian network was down. |
|
|
2014
|
Mon Sep 28 23:13:14 2009 |
Jenne | Configuration | Electronics | Rob is breaking stuff.... | Koji and I were looking for an extender
card to aid with MZ board testing.
Rob went off on a quest to find one. |
|
|
2013
|
Mon Sep 28 17:39:34 2009 |
rob | Update | PSL | problems | The PSL/IOO combo has not been behaving
responsibly recently.
The first attachment is a 15 day |
|
|
2012
|
Mon Sep 28 11:52:23 2009 |
Jenne | Update | Treasure | OAF screen added to the screenshots webpage | I used Kakeru's instructions in elog 1221
to add the C1OAF screen (still called C1ASS_TOP) |
|
|
2011
|
Mon Sep 28 02:24:05 2009 |
rana | Update | Locking | MC1/3 Dewhitening found OFF: Turned back ON | While trying to make the OAF work, I found
that the XYCOM switches for MC1/3 have been
set in the bad way for awhile. This means |
|
|
2010
|
Sun Sep 27 23:21:14 2009 |
rana | Update | PSL | SLOWscan result |
|
|
|
2009
|
Sun Sep 27 15:25:58 2009 |
Koji | Update | PSL | SLOWscan result | Oh, AMPMON dependence could be an artifact
of the ND filter???
For my case, it should be real dependence |
|
|
2008
|
Sun Sep 27 14:45:45 2009 |
Koji | Update | PSL | SLOWscan result | I ran (script dir)/PSL/FSS/SLOWscan on
op440m from 11:30 to 12:30 on 27th. Although
Rana and later I myself set "timed bombs" |
|
|
2007
|
Sun Sep 27 12:52:56 2009 |
rana | Update | MOPA | Increasing the power from the MOPA | This is a trend of the last 20 days. After
our work with the NPRO, we have recovered
only 5% in PMC trans power, although there's |
|
|
2006
|
Sat Sep 26 13:55:20 2009 |
Jenne | Update | MZ | MZ was locked in a bad place | I found the MZ locked in a bad place earlier
today. It was locked in a similarly
bad spot yesterday after we fixed the cable |
|
|
2005
|
Fri Sep 25 19:56:08 2009 |
rana | Configuration | Computers | NTPD restarted on c1dcuepics (to fix the MEDM screen times) | [SIZE=3][FONT=Tahoma]restarted ntp on op440m
using this syntax[/FONT][/SIZE]
|
|
|
2004
|
Fri Sep 25 19:55:59 2009 |
Jenne | Update | Adaptive Filtering | Subtraction of the microseism using Adaptive Filtering! | [Rana, Jenne]
The OAF system did something useful
today! Attached is a plot. Black |
|
|
2003
|
Fri Sep 25 17:51:51 2009 |
Koji | Update | MOPA | Solved (Re: Total MOPA power is constant, but the NPRO's power has decreased after last night's activities?) | Jenne, Koji
The cause of the decrease was found
and the problem was solved. We found this |
|
|
2002
|
Fri Sep 25 16:45:29 2009 |
Jenne | Update | MOPA | Total MOPA power is constant, but the NPRO's power has decreased after last night's activities? | [Koji, Jenne]
Steve pointed this out to me today,
and Koji and I just took a look at it together: |
|
|
2001
|
Fri Sep 25 16:10:17 2009 |
Jenne | Update | Adaptive Filtering | Some progress on OAF, but more still to be done | [Jenne, Sanjit]
It seems now that we are able to
get the OAF system to do a pretty good job |
|
|
2000
|
Thu Sep 24 21:04:15 2009 |
Jenne | Update | MOPA | Increasing the power from the MOPA | [Jenne, Rana, Koji]
Since |
|
|
1999
|
Thu Sep 24 20:17:05 2009 |
rana | Summary | LSC | Comparison of Material Properties for the new RFPD Mounts |
|
|
|
1998
|
Thu Sep 24 19:35:20 2009 |
rana | HowTo | Photos | 40m Google account | I've created a 40m Google account. Please
post all the 40m related photos to this site.
If you don't already have it, download Picasa |
|