| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
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1181
|
Fri Dec 5 20:40:38 2008 |
Yoichi | HowTo | Computers | Elog multi-keyword search | The current Elog search allows you to look
for only one keyword in the text.
You cannot search for two keywords by simply |
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1180
|
Fri Dec 5 14:13:41 2008 |
rana | Summary | IOO | MC trend for the last 4 days | [COLOR=pink][SIZE=2][FONT=Comic Sans MS]The
MC has stayed locked for ~3 days! I just
broke it to reset the MZ.[/FONT][/SIZE][/COLOR] |
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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
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1178
|
Fri Dec 5 01:58:58 2008 |
Yoichi | Configuration | ASC | tdscntr.pl now works at 40m | Tobin gave me the perl version of tdscntr
some time ago.
Pinkesh and I modified and tested it at LHO.
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1177
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Fri Dec 5 01:41:33 2008 |
Yoichi | Configuration | Computers | MEDM screen snapshot now works on linux machines | As a part of my "make everything work on linux"
project, I modified 'updatesnap' script so
that linux machines can update MEDM screen |
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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.
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1175
|
Thu Dec 4 16:29:20 2008 |
josephb | Configuration | Computers | Error message on Frame Builder Raid Array | The Fibrenetix FX-606-U4 RAID connected to
the frame builder in 1Y7 is showing the following
error message: IDE Channel #4 Error Reading |
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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 |
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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
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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 |
|
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1171
|
Wed Dec 3 19:21:09 2008 |
rana | Configuration | PEM | Ranger move | I looked at the Ranger signals. [B]Somehow
it has a relative transfer function of 'f'
between it and the Guralp.[/B]
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|
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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 |
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1169
|
Wed Dec 3 11:58:10 2008 |
Alberto | Update | PSL | MC Alignment | Rana, Alberto,
more details on the MC alignment we did yesterday.
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|
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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
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1167
|
Tue Dec 2 19:18:10 2008 |
rana | Summary | PEM | Ranger SS-1 | In entry http://dziban.ligo.caltech.edu:40/40m/881
and a follow up from Jenne I put in the Ranger
calibration.
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1166
|
Tue Dec 2 17:56:56 2008 |
Alberto, Rana | Configuration | PSL | MC Alignment | In the attempt to maximize the Mode Cleaner
transmission and minimize the reflection
from the steering mirrors of the MC periscope, |
|
|
1165
|
Mon Dec 1 15:09:27 2008 |
rob | Update | PEM | half-micron particle count is alarming | |
|
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1164
|
Thu Nov 27 22:56:42 2008 |
rana | Configuration | Environment | temperature | 8-) |
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1163
|
Tue Nov 25 19:29:15 2008 |
rana, alberto, john | Configuration | Environment | temperature | [quote]The PSL Room Temperature was alarming
because it had gone above 23 C. This set
off an unfortunate chain of events:
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1162
|
Tue Nov 25 18:38:03 2008 |
Alberto, Rob | Update | PSL | MC Periscope Alignment | This morning when I came in I found the MC
cleaner unlocked and the autolocker script
could not lock it. The reflected beam was |
|
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1161
|
Mon Nov 24 19:15:16 2008 |
rana, alberto, john | Configuration | Environment | temperature | The PSL Room Temperature was alarming because
it had gone above 23 C. This set off an unfortunate
chain of events:
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1160
|
Mon Nov 24 17:14:44 2008 |
rana | Update | PSL | Mach Zender trends | It looks like the MZ has gotten less drifty
after the alignment on Friday. |
|
|
1159
|
Mon Nov 24 16:43:34 2008 |
rana | Configuration | Computers | Alex and Jay took away some computers from the racks | I was over at Wilson house and saw Jay and
Alex bring in 3 rackmount computers. One
was a Sun 4600 and
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|
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1158
|
Sat Nov 22 10:55:51 2008 |
Caryn | Configuration | IOO | Drum modes Lock-In settings changed | I unhooked the MC Demod Board's Qmon signal
from the Lock-In. Set the demodulation frequency
to 31.11Hz with 1V amplitude, and
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|
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1157
|
Fri Nov 21 21:28:32 2008 |
rana | Summary | Computers | c0daqawg restart | [COLOR=green]A few minutes after restarting
fb0 for the Guralp channels, the DAQAWG lights
went red on the DAQ screens.[/COLOR]
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|
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1156
|
Fri Nov 21 21:20:24 2008 |
rana | Update | PEM | Guralp noise measurement | This is the spectra and time series of the
Guralp channels along with the Ranger (MC2).
Looks like we could reduce the gain
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|
|
1155
|
Fri Nov 21 20:29:43 2008 |
rana, alberto, rob | Update | PSL | Mach Zender alignment | [quote] So now the MZ alignment seems good;
Alberto is on the MC periscope alignment
like a cheap suit.[/quote]
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1154
|
Fri Nov 21 19:47:26 2008 |
rana | Update | PEM | Guralp noise measurement | and here's the spectra with them connected
- from the coherences, it looks like it needs
to be rotated by 90 deg.
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|
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1153
|
Fri Nov 21 17:27:47 2008 |
Jenne | Update | PEM | Guralp noise measurement | Here is the data from the Guralp Seismometer
for the past day or so, before I fixed the
VERT-1 channel. The NS and EW show what's |
|
|
1152
|
Fri Nov 21 16:52:48 2008 |
Jenne | Update | PEM | Guralp seismometer's Channel Problems are solved | PROBLEM noticed earlier this week: It looked
like one of the seismometer channels (VERT-1)
wasn't working, no matter how I put which |
|
|
1151
|
Fri Nov 21 16:11:26 2008 |
rana, alberto, rob | Update | PSL | Mach Zender alignment | The Mach Zender's dark port DC voltage had
gone up too high (~0.5 V)and was turning
yellow
|
|
|
1150
|
Fri Nov 21 16:03:50 2008 |
rana | HowTo | General | Recharging Batteries | I found some black & red "Ninja" alkaline
AA batteries in the battery charger. [COLOR=red]This
is dangerous.[/COLOR] Please
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1149
|
Thu Nov 20 09:37:39 2008 |
steve | Update | PSL | MZ vs temp | This 12 days plot shows that it can hold lock
if the daily temp variation is not more than
3/4 of a degree C
|
|
|
1148
|
Wed Nov 19 18:12:35 2008 |
rana | Configuration | IOO | new channel for MC drum modes | I set up the lockin to take the MC Demod Board's
Qmon signal, demodulate it at 27.5 kHz, and
put the output into a DAQ channel (I think |
|
|
1147
|
Wed Nov 19 18:02:18 2008 |
rana | Configuration | Electronics | All the Marconi Set to the Rubidium Frequency Standard | Not sure what was going on before. I changed
the frequency counter to use an AC coupled
input, and had it average
|
|
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1146
|
Wed Nov 19 10:32:11 2008 |
Alberto | Configuration | Electronics | All the Marconi Set to the Rubidium Frequency Standard | I placed the SRS Rubidium FS275 over the PSL
rack, next to the frequency counter. This
one and the Marconi on the PSL rack have |
|
|
1145
|
Tue Nov 18 19:44:53 2008 |
Alberto | Update | General | X Arm Cavity "Negative" FSRs Measured | Previous measurements on the X arm cavity
revealed a shift of the frequencies of the
cavity resonances from where one would expect |
|
|
1144
|
Tue Nov 18 19:37:23 2008 |
Yoichi | Update | IOO | MC1 OSEM signals sign flipped and c1susvme1 restart problem | Around 2PM, MC1 started to swing crazily.
The damping feedback was not working and |
|
|
1143
|
Tue Nov 18 13:28:08 2008 |
Caryn | DAQ | IOO | new channel for MC drum modes | Alberto has added a channel for the Mode Cleaner
drum modes.
C1:IOO-MC_DRUM1
|
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1142
|
Mon Nov 17 20:47:19 2008 |
Caryn | Summary | General | Drove MC at 28kHz to excite drum modes | Rana, Alberto and I observed drum mode frequencies
at 23.221kHz(MC1), 28.039kHz(MC2), 28.222kHz(MC3)
while driving the mode cleaner. We observed |
|
|
1141
|
Mon Nov 17 16:59:22 2008 |
Jenne | Update | PEM | Seismometer hooked up, reading channels on DataViewer | Alberto, Jenne
The Guralp Seismometer is (finally) hooked |
|
|
1140
|
Mon Nov 17 15:07:06 2008 |
Yoichi | Update | PSL | Reference cavity ring down | I used MATLAB's system identification tool
box to estimate the response of the reference
cavity, i.e. cavity pole.
|
|
|
1139
|
Mon Nov 17 11:01:15 2008 |
Alberto | HowTo | Electronics | Calibrating the Frequency Standard of the Marconi | I locked the [COLOR=purple][I]SRS Rubidium
Frequency Standard FS275[/I][/COLOR] to the
the 1pps from the GPS. The specs from the |
|
|
1138
|
Fri Nov 14 22:40:51 2008 |
Yoichi | Update | PSL | Reference cavity ring down | [quote]
To make the DEI pulser make a fast pulse
on the EO shutter EOMs, we had to make sure:
|
|
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1137
|
Fri Nov 14 20:35:47 2008 |
rana | Update | PSL | Reference cavity ring down | To make the DEI pulser make a fast pulse on
the EO shutter EOMs, we had to make sure:
|
|
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1136
|
Fri Nov 14 19:20:42 2008 |
Yoichi | Update | PSL | Reference cavity ring down | Thanks to Bob making the high-voltage BNC
cables for the HV pulse generator, I was
able to operate the EOM in front of
|
|
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1135
|
Fri Nov 14 17:41:50 2008 |
Jenne | Omnistructure | Electronics | Sweet New Soldering Iron | The fancy new Weller Soldering Iron is now
hooked up on the electronics bench.
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|
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1134
|
Fri Nov 14 11:33:19 2008 |
steve | Update | VAC | SRS-RGA installed | Old Dycor rga is removed and new SRS-RGA200
installed.
It is pumped down and ready for hooking up |
|
|
1133
|
Thu Nov 13 15:50:44 2008 |
Alberto | Configuration | General | GPS 10MHz clock | The schematic of the 1Y7 rack that Alan pointed
out (see attachment) don't represent anymore
the actual rack.
|
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1132
|
Thu Nov 13 11:33:25 2008 |
Alberto | HowTo | Treasure | Making (good) Matlab figures | Just a little summary of some useful ways
to change plot settings in Matlab that I
wanted to share and remember for the future:
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