| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
1113
|
Tue Nov 4 01:03:01 2008 |
rana | Summary | PEM | periodic thump noise in MC1_ACC | [B]There seems to be a periodic thump seen
by the MC1 Accelerometers as well as the
surrounding optics.[/B]
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1114
|
Tue Nov 4 17:58:42 2008 |
Alberto | DAQ | PSL | MC temperature sensor | I added a channel for the temperature sensor
on the MC1/MC3 chamber: C1:PSL-MC_TEMP_SEN.
To do that I had to reboot the frame builder. |
|
|
1115
|
Wed Nov 5 12:41:36 2008 |
Alberto | Update | LSC | Absolute Length and g-factor measurements conclusions | [SIZE=4][B][COLOR=green]Absolute Length and
g-Factor Measurement for the 40m Arm Cavities,
Summary of Results[/COLOR][/B][/SIZE]
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1116
|
Thu Nov 6 09:45:27 2008 |
steve | Update | MOPA | head temp hick-up vs power | The control room AC temp was lowered from
74F to 70F around Oct 10
This hold the head temp rock solid 18.45C |
|
|
1117
|
Thu Nov 6 10:06:41 2008 |
steve | Update | Locking | arms lock degradation | I have been locking the arms in the mornings
lately.
The daily drift of LSC-TRX is ~ 15% and LSC-TRY |
|
|
1119
|
Thu Nov 6 22:07:56 2008 |
rana | Configuration | Computers | ELOG compile on Solaris | From the ELOG web pages:
Solaris:
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1120
|
Fri Nov 7 08:08:00 2008 |
steve | Update | PEM | AC turned off in IFO room | All [COLOR=red]tree[/COLOR] AC units in IFO
room 104 switched off at 7:45am
I'm looking for the periodic thump signal |
|
|
1121
|
Fri Nov 7 10:52:57 2008 |
steve | Update | PEM | AC is back on | The 20 minutes and 6 sec thumps are not related
to the 40m ac units
This period is precisely right on so it is |
|
|
1122
|
Fri Nov 7 15:58:10 2008 |
rana | Update | PEM | AC is back on | I'll bet Steve a dollar that it is mechanical.
The attached PDF compares all of the accelerometers
from right now.
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|
|
1123
|
Fri Nov 7 16:05:55 2008 |
steve | Bureaucracy | SAFETY | insect killer sprayed at kitchen area ! |
Bob and I cleaned out the sink area and sprayed
Spectracide's BUG STOP insect killer solution |
|
|
1124
|
Fri Nov 7 18:38:19 2008 |
Alberto | DAQ | PSL | MC temperature sensor hooked up | Alberto, Rana,
we found that the computer handling the signals
from ICS-110B was C1IOVME so we restarted |
|
|
1125
|
Mon Nov 10 11:06:09 2008 |
rob | HowTo | IOO | mode cleaner locked |
I found the mode cleaner unlocked, with (at
least) MC1 badly mis-aligned. After checking |
|
|
1126
|
Mon Nov 10 11:32:49 2008 |
rob | Update | Computers | c1iscex rebooted |
it was running a few cycles late |
|
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1127
|
Mon Nov 10 16:44:14 2008 |
steve | Update | PEM | particle counter at MC2 | The particle counter was moved to MC2 table
temporarily.
It is clamped to the table at the south west |
|
|
1129
|
Mon Nov 10 19:39:40 2008 |
steve | Update | PEM | thump noise from particle counter | The particle counter is back on the IOOC location
on a piece of FOAM
It needs this isolation, so when the pump |
|
|
1130
|
Wed Nov 12 11:14:59 2008 |
Caryn | DAQ | PSL | MC temp sensor hooked up incorrectly | MC Temperature sensor was not hooked up correctly.
It turns out that for the 4 pin LEMO connections
on the DAQ like J13, J14, etc. the channels |
|
|
1131
|
Wed Nov 12 11:36:13 2008 |
Jenne | Update | PEM | Guralp Breakout Box is ~50% hooked up | The Guralp box is about halfway hooked up
now. The seismometer is under the BSC, and
the long cable from the seismometer to the |
|
|
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:
|
|
|
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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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 |
|
|
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.
|
|
|
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
|
|
|
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:
|
|
|
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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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 |
|
|
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.
|
|
|
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 |
|
|
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 |
|
|
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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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 |
|
|
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 |
|
|
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 |
|
|
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
|
|
|
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 |
|
|
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
|
|
|
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
|
|
|
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
|
|
|
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 |
|
|
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 |
|
|
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.
|
|
|
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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|
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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
|
|
|
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]
|
|
|
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
|
|
|
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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|
|
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. |
|
|
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:
|
|
|
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 |
|
|
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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1164
|
Thu Nov 27 22:56:42 2008 |
rana | Configuration | Environment | temperature | 8-) |
|