ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
1168
|
Tue Dec 2 19:51:32 2008 |
rana | Update | PEM | half-micron particle count is alarming | The 0.5 micron dust monitor count is now pretty
high (36000). I wandered around the lab to
see if there was anything
|
 |
1169
|
Wed Dec 3 11:58:10 2008 |
Alberto | Update | PSL | MC Alignment | Rana, Alberto,
more details on the MC alignment we did yesterday.
|
|
1170
|
Wed Dec 3 12:49:11 2008 |
jenne | Update | Computers | something sketchy with NDS ... or something | [SIZE=2][COLOR=green]Never mind...I had forgotten
that you have to run mdv_config every time
you open matlab, not just every time you |
|
1172
|
Wed Dec 3 20:10:09 2008 |
Jenne, Rana | Update | PEM | Comparing Wiener subtraction with different seismometers | Attached is a plot of MC_L, and then the residual
MC_L after static Wiener filtering, using
different combinations of our accelerometers |
|
1173
|
Wed Dec 3 20:36:07 2008 |
Jenne, Rana | Update | PEM | Comparing Wiener subtraction with different seismometers | The Ranger has now been moved over to sit
underneath the MC2 tank (it was previously
close to the PSL rack). It
|
  |
1174
|
Thu Dec 4 13:49:39 2008 |
Jenne | Update | PEM | More of: Comparing Wiener subtraction using different sensors | Here is another version of the same type plot
I put in the elog yesterday. This plot is
looking at the 7200 seconds after 04Dec2008 |
|
1176
|
Thu Dec 4 17:42:23 2008 |
caryn | Update | IOO | drum modes observable without excitation | So, the mode cleaner was evidently aligned
better and now the drum modes are observable
using DTT.
|
 |
1179
|
Fri Dec 5 09:29:59 2008 |
rana | Update | IOO | drum modes observable without excitation | Not sure what the y-scale is since there aren't
any y axis labels in the plot, but it seems
like we
|
|
1182
|
Fri Dec 5 21:31:11 2008 |
Yoichi | Update | IOO | drum modes observable without excitation | The calibration of the MC_F feedback is posted
in elog:1032.
I'm not sure where Caryn took MC signal, |
|
1183
|
Sun Dec 7 16:02:46 2008 |
rana | Update | General | Mag 5.1 EQ halfway to Vegas | There was a [URL=http://earthquake.usgs.gov/eqcenter/recenteqsww/Quakes/ci14408052.php#details]Mag
5.1 EQ[/URL] Friday night at 8:18 PM.
|
 |
1184
|
Sun Dec 7 16:12:53 2008 |
rana | Update | DAQ | booted awg | [SIZE=3]because it was [COLOR=red]red[/COLOR][/SIZE] |
|
1187
|
Mon Dec 8 11:54:27 2008 |
Yoichi | Update | General | IFO mirrors aligned | This morning, I re-aligned the IFO mirrors
to see if they were badly moved by the earthquake.
The both arms locked just by the restoring |
|
1188
|
Mon Dec 8 17:50:21 2008 |
Yoichi | Update | SUS | ITMY drift | The suspension drift monitor shows that the
ITMY alignment was shifted after the earthquake.
Looks like only the UL sensor had a step |
   |
1190
|
Fri Dec 12 22:51:23 2008 |
Yoichi | Update | PSL | Reference cavity ring down measurement again | Bob made new HV-cables with HV compatible
coaxes. The coax cable is rated for 2kV,
which was as high as Bob
|
|
1191
|
Tue Dec 16 19:06:01 2008 |
Yoichi | Update | PSL | Reference cavity ring down repeated many times | Today, I repeated the reference cavity ring
down measurement many times to see how much
the results vary.
|
 |
1196
|
Fri Dec 19 14:35:58 2008 |
Yoichi Alberto | Update | IOO | MC WFS and IOO-POS QPD re-centering | For the past two days, the MC alignment has
kept drifting.
This morning, the MC alignment was so bad |
|
1197
|
Fri Dec 19 16:38:09 2008 |
steve | Update | LSC | all optlevs centered | All optlevs were centered after full alignment.
Qpd sums are:
|
|
1199
|
Sun Dec 21 13:00:06 2008 |
steve | Update | all down cond. | vac and laser back on | There was a power outage sometimes early Saturday.
All things are down.
|
|
1200
|
Sun Dec 21 14:18:04 2008 |
Yoichi | Update | Computers | RFM network bypass box's power supply is dead | I restarted the front-end computers by power
cycling them one-by-one.
After issuing startup commands, most of them |
|
1201
|
Mon Dec 22 13:48:22 2008 |
Yoichi | Update | Computers | RFM network bypass box's power supply is dead | As a temporary fix, I cut the cable of the
power supply and connected it to the Sorensen
power supply +5V on the rack.
|
|
1202
|
Tue Dec 23 10:35:40 2008 |
Yoichi | Update | Computers | RFM network breakdown mostly fixed | Rana, Rolf, Alberto, Yoichi
The source of the problem was the RFM bypass |
|
1203
|
Wed Dec 24 10:33:24 2008 |
Yoichi | Update | Computers | Several fixes. Test point problem remains. | Yesterday, I fixed several remaining problems
from the power failure.
|
|
1204
|
Wed Dec 24 12:46:54 2008 |
Yoichi | Update | Computers | Test points are back | Rob told me how to restart the test point
manager.
It runs on fb40m and actually there is an |
|
1205
|
Mon Dec 29 18:01:07 2008 |
Aidan | Update | Auxiliary locking | Updated 40m Upgrade Document T080074-00-R |
Added a paragraph to the 40m Upgrade document
describing the fiber stabilization and frequency |
|
1206
|
Mon Dec 29 21:38:57 2008 |
Yoichi | Update | Computers | Snapshots of MEDM screens | I wrote scripts to take snapshots of MEDM
screens in the background.
These scripts work even on a computer without |
|
1210
|
Thu Jan 1 00:55:39 2009 |
Yoichi | Update | ASC | Alignment scripts for Linux | A Happy New Year.
The dither alignment scripts did not run |
|
1214
|
Fri Jan 2 18:49:54 2009 |
Yoichi | Update | LSC | LSC modulation frequencies adjusted | I noticed that the IFO did not lock in the
MICH configuration.
This was because AS166Q signal was too small.
|
|
1219
|
Fri Jan 9 09:14:17 2009 |
steve | Update | PEM | ifo is recovered after eq | There is no obvious damage from last night
earth quake.
All sus dampings were turned on, MC locked |
|
1220
|
Fri Jan 9 16:52:18 2009 |
steve | Update | VAC | tp3 forline pump replaced | Alberto took 40m vacuum 101 class as we replaced
the drypump at the annulus pump line.
|
|
1221
|
Fri Jan 9 17:30:10 2009 |
Kakeru | Update | Computers | Snapshots of MEDM screens | I wrote a web page which shows snapshots of
MEDM screens generated by Yoich's script
(e-log #1206).
|
|
1222
|
Mon Jan 12 10:57:38 2009 |
rob | Update | General | some stuff |
The AS beam was not hitting the AS166 diode,
so I aligned the last little steering mirror |
|
1223
|
Mon Jan 12 18:53:03 2009 |
Yoichi | Update | LSC | AS CCD centering and ASDD demod phase | After Rob's AS beam work, I centered the beam
on the AS CCD.
I also optimized the ASDD demod-phase for |
|
1225
|
Tue Jan 13 18:59:09 2009 |
Kakeru | Update | LSC | AS CCD centering and ASDD demod phase | I tuned the demod-phase for PRCL and SRCL
hand-off, but it have not been optimized
enoughly.
|
|
1229
|
Thu Jan 15 09:19:32 2009 |
steve | Update | IOO | MC locking | MC2 sus damping was found tripped at the morning
the second time this week.
|
|
1231
|
Fri Jan 16 11:28:54 2009 |
Yoichi | Update | Computers | Lab. laptop needs wireless lan driver update | One of the lab. laptops (belladonna) cannot
connect to the network now.
I guess this was caused by someone clicked |
|
1233
|
Fri Jan 16 18:25:32 2009 |
Yoichi, Kakeru, Rana | Update | LSC | Arms were unstable | The single arm lock had been unstable for
both arms in the past few days.
|
   |
1234
|
Fri Jan 16 18:29:08 2009 |
Yoichi | Update | SUS | Oplevs QPDs centered | Kakeru centered ITMX and BS optical levers
with the help of Jenne on the walkie-talkie. |
|
1237
|
Mon Jan 19 13:58:53 2009 |
Yoichi | Update | ASC | Better ditherServo.pl | Nick Smith (@LHO) tested the ditherServo.pl
at Hanford.
He added options to specify exit conditions |
|
1239
|
Mon Jan 19 18:21:41 2009 |
rana | Update | Computers | loadLIGOData a GUI for mDV | The tool is very nice; I looked at the seismic
trend for 16 days (attached).
However, it gives some kind of error when |
|
1240
|
Tue Jan 20 15:28:42 2009 |
Yoichi | Update | Computers | loadLIGOData a GUI for mDV | [quote]The tool is very nice; I looked at
the seismic trend for 16 days (attached).
|
|
1241
|
Wed Jan 21 16:18:17 2009 |
Kakeru | Update | LSC | AS CCD centering and ASDD demod phase | I tuned the DD demod-pahse for SRM.
It was tuned as the error singnal is to be
0 when the cavity is locked.
|
|
1242
|
Wed Jan 21 22:53:08 2009 |
rana | Update | LSC | AS CCD centering and ASDD demod phase | Just my opinion, but I think all we want out
of the DD signals is something to control
the DRM
|
|
1245
|
Thu Jan 22 12:08:59 2009 |
pete | Update | oplevs | oplev calibration | Following the procedure described in Royal
Reinecke's 2006 SURF report, I've calibrated
the ETMY yaw oplev DOF. The idea is to sweep |
|
1248
|
Fri Jan 23 10:00:21 2009 |
steve | Update | PSL | PMC transmission is down | The PMC transmission is going down.
I have not relocked the PMC yet. |
|
1249
|
Fri Jan 23 12:48:12 2009 |
Kakeru | Update | oplevs | arm cavity oplev calibration | I calibrated optlevs of x and y arm cavity,
indipendently from Peter's work.
|
|
1250
|
Fri Jan 23 14:00:02 2009 |
Yoichi | Update | PSL | PMC transmission is down | [quote]The PMC transmission is going down.
I have not relocked the PMC yet.[/quote]
|
|
1251
|
Fri Jan 23 16:33:27 2009 |
pete | Update | oplevs | x-arm oplev calibrations | ITMXpit 71 microrad/ct
ITMXyaw 77 microrad/ct
ETMXpit 430 microrad/ct
|
|
1254
|
Wed Jan 28 12:42:51 2009 |
Yoichi | Update | PSL | MOPA dying | Yoichi, Jenne, Peter
As most of you know, the MOPA output power |
 |
1255
|
Wed Jan 28 12:51:32 2009 |
Yoichi | Update | Computers | Megatron is dying | For the past three days, Megatron has been
making a huge noise. Sounds like a fan is
failing.
|
|
1256
|
Wed Jan 28 19:08:50 2009 |
Yoichi | Update | PSL | Laser is back (sort of) | Yoichi, Peter, Jenne
Summary:
|
|