ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
356
|
Tue Mar 4 19:14:09 2008 |
rana | Configuration | CDS | TDS & SVN | [COLOR=purple][I]Matt, Rob, Rana[/I][/COLOR]
[B][COLOR=chocolate]Today we added the TDS |
|
|
357
|
Tue Mar 4 20:14:02 2008 |
rana | Configuration | IOO | MC Alignment | The MC alignment was pretty far off. We were
getting TEM01 mode locks only.
Rather than inspect what happened I just |
|
|
358
|
Tue Mar 4 23:22:32 2008 |
rob | DAQ | Computers | c1susvme1&2 rebooted |
I found that some channels from c1susvme1
and c1susvme2 were not being recording by |
|
|
359
|
Wed Mar 5 12:35:09 2008 |
John | Summary | Computer Scripts / Programs | Plot photodiode responses in MatLab | A matlab function to plot the responses of
photodiodes. There's still plenty of room
for improvement but it should work for all |
|
|
360
|
Wed Mar 5 12:51:48 2008 |
John | Summary | LSC | Initial Ligo Arm finesse versus lambda | I've taken the coating recipes for the initial
ligo arm cavity from Rana's web page (ligo.caltech/edu/~rana/mat/)
and plotted the finesse as a function of |
|
|
361
|
Wed Mar 5 17:35:24 2008 |
rana | Update | IOO | RFAM during MC lock | I used an ezcaservo command to adjust the
offsets for Alberto's StochMon channels.
They [B][COLOR=green]are all
|
|
|
362
|
Thu Mar 6 00:17:37 2008 |
rob | Update | Locking | DD handoff working | Got the DD (double demod) handoff scripts
working tonight, with just the DRMI. So,
now acquisition with the single demod signals |
|
|
363
|
Fri Mar 7 00:47:54 2008 |
rana | Configuration | PEM | Ranger SS-1 | Yesterday evening around 7:30 PM, I changed
the Ranger seismometer from a
vertical to a horizontal seismometer. To |
|
|
364
|
Fri Mar 7 17:10:01 2008 |
Max Jones | Update | Computers | Noise Budget work | Noise budget has been moved to the svn system.
A checked out copy is in the directory caltech.
From now on, I will try to use the work cycle |
|
|
365
|
Fri Mar 7 19:04:39 2008 |
steve | Omnistructure | PSL | laser pointer | Green laser pointer was found in my desk.
I blamed Rana for not returning it to me
after a conference talk.
|
|
|
366
|
Mon Mar 10 02:05:08 2008 |
rob | Update | Locking | DRMI+2ARMs working better |
Some encouraging progress on the locking
front tonight. After the work on the DRM |
|
|
367
|
Mon Mar 10 20:46:41 2008 |
John | Configuration | LSC | ETMY Trans PD & QPD | I've placed a 10% reflector in the path from
ETMY to the trans and quadrant photodiodes. |
|
|
368
|
Tue Mar 11 23:14:01 2008 |
rana | Configuration | PEM | Accelerometer and Seismometer movements | Steve and Matt moved the accelerometers and
seismometers today.
The accelerometers are now placed around |
|
|
369
|
Wed Mar 12 00:36:52 2008 |
rana | Configuration | PEM | Accelerometer and Seismometer movements | I used the MISO FIR Wiener matlab code to
see how well we might do in principle.
|
|
|
370
|
Wed Mar 12 00:40:35 2008 |
rana | Configuration | PEM | Accelerometer and Seismometer movements | Same as above but with 2048 taps and a 128
Hz sample rate. Does much better at the 16
Hz bounce mode. |
|
|
371
|
Wed Mar 12 00:47:26 2008 |
rana | Configuration | PEM | Accelerometer and Seismometer movements | And this is a [COLOR=blue]cool snapshot[/COLOR]
showing how this operation used [B][COLOR=red]16
cores[/COLOR][/B] on [SIZE=5][B][COLOR=purple]menkar |
|
|
372
|
Wed Mar 12 23:05:44 2008 |
rana | Update | IOO | MC WFS | they are bad, somewhat
please fix |
|
|
373
|
Thu Mar 13 02:52:06 2008 |
Lisa | Configuration | LSC | Locking with 3f | Today we have tried to use the reflected signal
demodulated at 3*f1 ~ 99 MHz ([COLOR=chocolate][B]REFL31[/B][/COLOR])
for length control.
|
|
|
374
|
Thu Mar 13 03:07:19 2008 |
Lisa | Metaphysics | Environment | Coolness at the 40m | My first (and hopefully not last) week at
the [COLOR=orange]40m lab[/COLOR] is ending
:(
|
|
|
375
|
Thu Mar 13 12:11:58 2008 |
aivanov | Update | Computer Scripts / Programs | routing PEM -> ASS -> SUS_MCL |
on ASS RFM 1 has PEM signals at
|
|
|
376
|
Thu Mar 13 13:15:09 2008 |
aivanov | Update | Computer Scripts / Programs | new sfotware intall, backup files | New:
op440m:40m>ls -alt /cvs/cds/caltech/target/c1susvme[12]/*.o
-rw-r--r-- 1 controls staff 57920 |
|
|
377
|
Thu Mar 13 18:20:29 2008 |
John | Update | General | New Focus 4003 EOM 29.489MHz | I measured the modulation index as a function
of drive power using an OSA. Agrees well
with spec of 0.2 rad/V.
|
|
|
378
|
Fri Mar 14 12:06:29 2008 |
josephb | Configuration | Cameras | GC750 looking at ETMX while locked | The GC750 (CMOS) is currently looking at the
front of ETMX. Unfortunately, its being
routed through a 10Mbit connection (which |
|
|
379
|
Fri Mar 14 14:59:51 2008 |
josephb | Configuration | Cameras | Comparison between GC650 (CCD) and GC750 (CMOS) looking at ETMX | Attached are images taken of ETMX while locked.
The first two are 300,000 microsecond exposure |
|
|
380
|
Fri Mar 14 15:06:24 2008 |
rob | Update | Computer Scripts / Programs | routing PEM -> ASS -> SUS_MCL | [quote]
on ASS RFM 1 has PEM signals at
|
|
|
381
|
Fri Mar 14 15:52:07 2008 |
rob | Configuration | LSC | LSC code change |
I've edited the LSC code to send different
signals to the ASS box. Now, instead of |
|
|
382
|
Fri Mar 14 16:56:03 2008 |
Dmass | Bureaucracy | Computers | New 40m control machine. | I priced out a new control machine from Dell
and had Steve buy it.
|
|
|
383
|
Sun Mar 16 17:03:32 2008 |
rob | Configuration | CDS | ASS code change |
I've updated the ass.mdl file in the directory:
|
|
|
384
|
Mon Mar 17 18:30:48 2008 |
mevans | Configuration | PEM | Adaptive Filtering | It seems that adaptive filtering can achieve
results similar to those of the MISO FIR
Wiener (entry 369). The adaptive code simulates |
|
|
385
|
Thu Mar 20 15:28:20 2008 |
steve | Update | VAC | tp2 's drypump replaced | The fore pump of tp2 was replaced at fore
line pressure 998m Torr |
|
|
386
|
Thu Mar 20 16:06:27 2008 |
rob | Configuration | LSC | LSC code change |
I changed the LSC code again. I noticed
that when turning off the LSC (e.g., going |
|
|
387
|
Thu Mar 20 17:45:36 2008 |
rana | Summary | ASS | Adaptive Filtering in the ASS system | Over the past couple weeks we (Matt, Alex,
Rob, me) have worked on getting an adaptive
filter
|
|
|
388
|
Fri Mar 21 09:02:03 2008 |
steve | Update | VAC | tp 2 failed | Small turbo #2 is the forepump of the maglev.
It failed last night, shut down the maglev
and interlock closed V1
|
|
|
389
|
Fri Mar 21 11:54:38 2008 |
rob | Update | VAC | tp 2 failed | [quote]Small turbo #2 is the forepump of the
maglev.
It failed last night, shut down the maglev |
|
|
390
|
Fri Mar 21 17:01:21 2008 |
rana | Configuration | DMF | Locale change on Mafalda & seisBLRMS restart | Ever since we moved the accelerometers to
be around the MC and changed their names,
the seisBLRMS
|
|
|
391
|
Fri Mar 21 23:15:11 2008 |
rana | Configuration | PEM | Ranger SS-1: New Setup | The Ranger seismometer has been in a bad state.
Its output had been sent into a SR560 without
any termination.
|
|
|
392
|
Fri Mar 21 23:17:47 2008 |
rana | Configuration | DMF | seisBLRMS restarted | I updated the seisBLRMS par file with the
new channel names of the accelerometers and
the seismometer and then
|
|
|
394
|
Sat Mar 22 22:39:02 2008 |
mevans | Summary | CDS | Direct Form 2 filters are bad | Here I show a comparison between the filter
algorithm currently used in LIGO (Direct
Form II), and an alternative algorithm designed |
|
|
395
|
Sun Mar 23 00:43:08 2008 |
mevans | HowTo | General | Online Adaptive Filtering | I wrote a short document about the OAF running
on the ASS. Since there is no BURT setup,
I put a script in /cvs/cds/caltech/scripts |
|
|
396
|
Sun Mar 23 00:56:42 2008 |
John | Update | LSC | More on 3f | We ended our last attempt at 3f locking concerned
about the beam size on PD6. I investigated
tonight. The beam was not obviously overfilling |
|
|
397
|
Sun Mar 23 10:42:54 2008 |
Valera | Summary | Electronics | RFAM of the RF stabilization box is measured | I reconstructed Tobin's setup to measure the
RFAM after the RF stabilization box in the
166 MHz modulation path.
|
|
|
398
|
Mon Mar 24 13:03:54 2008 |
rob | Update | Electronics | HP4195A is back |
[quote]The swept sine output looks totally |
|
|
399
|
Mon Mar 24 20:15:03 2008 |
John | Summary | Computers | c1susvme2 | c1susvme2 isn't behaving itself. It keeps
getting out of sync and/or giving a red status
light.
|
|
|
400
|
Tue Mar 25 10:44:24 2008 |
rob | Update | Computers | c1susvme2 | [quote]c1susvme2 isn't behaving itself. It
keeps getting out of sync and/or giving a
red status light.
|
|
|
401
|
Tue Mar 25 13:21:25 2008 |
Andrey | Update | Computers | c1susvme2 is not behaving itself again | |
|
|
402
|
Tue Mar 25 15:56:09 2008 |
John | Update | Treasure | Assorted pictures | Some pictures scavenged from the D40. |
|
|
403
|
Tue Mar 25 16:34:47 2008 |
rob | Update | Computers | c1susvme2 | [quote][quote]c1susvme2 isn't behaving itself.
It keeps getting out of sync and/or giving
a red status light.
|
|
|
404
|
Wed Mar 26 13:41:53 2008 |
Andrey | HowTo | SUS | Modification of ''C1DRIFT_MONITOR'' | I learned how to modify the drift-monitor
in MEDM so that values on it change colors
from green to yellow to red depending how |
|
|
405
|
Wed Mar 26 22:26:15 2008 |
John | Update | Computers | c1susvme | I removed the fan and tweaked the timing cables
to see if they were the source of our problems.
I saw no effect. I'm leaving the fan off |
|
|
406
|
Fri Mar 28 16:18:18 2008 |
rob | Update | Computers | c1susvme2 status | c1susvme2 is getting worse and worse. it
won't run for more than ~45 minutes without
fatally de-syncing. for now I've turned |
|