| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
470
|
Thu May 8 02:06:13 2008 |
rana | Summary | COC | Thermal Lensing in the ITMs and BS may be a problem | The iLIGO interferometers start to see thermal
lensing effects with ~2W into the MC, a recycling
gain of ~50, and a beam waist on the ITMs |
|
|
469
|
Thu May 8 01:50:25 2008 |
rana | Summary | ASC | Arm Cavity HOM Resonances | Nothing new, but I calculated the frequencies
of the first 22 higher order transverse modes
and thought I might as well list them here.
|
|
|
468
|
Thu May 8 01:07:24 2008 |
rana | Summary | LSC | Frequency Noise test: MC Trans Backscatter | [COLOR=purple][SIZE=4][FONT=Arial]There is
a wandering hump in the MC_F spectrum.[/FONT][/SIZE][/COLOR]
It can move around on the time
|
|
|
467
|
Wed May 7 15:25:41 2008 |
rob | Configuration | LSC | AP33 -> POX33 | [quote]
I am in the process of switching the POX166
and AP33 photodetectors, so that they become |
|
|
466
|
Tue May 6 17:28:39 2008 |
rob | Configuration | LSC | AP33 -> POX33 |
I am in the process of switching the POX166
and AP33 photodetectors, so that they become |
|
|
465
|
Mon May 5 15:53:14 2008 |
steve | Update | VAC | drypump replaced & readbacks are out | The small turbo pump of the annulus system
is tp3
It's drypump was replaced at 1.4 Torr after |
|
|
464
|
Mon May 5 11:04:30 2008 |
rob | Omnistructure | Computers | Network setup |
Mafalda was not connected to the network,
and so our DMF-based seisBLRMS has not been |
|
|
463
|
Thu May 1 12:46:02 2008 |
josephb | Configuration | Computers | Nodus gateway is up | The computer Nodus is now acting as a gateway
machine between the GC network and the martian
network in the 40m. It has the same passwords |
|
|
462
|
Thu May 1 08:31:51 2008 |
steve | Update | SUS | earthquake trips etmy & mc1 | Earthquake at Lake Isabel magnitude 4.4 at
1am today shakes the 40m
ETMY and MC1 watchdogs tripped.
|
|
|
461
|
Wed Apr 30 20:48:58 2008 |
Andrey | Summary | PEM | New Weather Channels |
I created the new channels for the weather
station, all letters are capital ones. They |
|
|
460
|
Tue Apr 29 21:30:49 2008 |
Andrey | Update | PEM | In the process of renaming channels for Weather Station |
I startted renaming channels for the weather
station, and I will continue this tomorrow, |
|
|
459
|
Tue Apr 29 21:09:12 2008 |
rana | DAQ | CDS | FE Filters | These are new FE filters for downsampling
and upsampling. We will be going from native
hardware sampling rates of 64k down to 32k, |
|
|
458
|
Mon Apr 28 23:44:33 2008 |
Andrey | Update | Computer Scripts / Programs | Weather.db |
I was trying to figure out how to modify
the file "Weather.db" so that the atm.pressure |
|
|
457
|
Sun Apr 27 22:57:15 2008 |
ajw | DAQ | Computers | br40m? | [quote]
The testpoint manager (which runs on fb40m)
crashed this afternoon. Upon re-starting |
|
|
456
|
Sun Apr 27 18:11:58 2008 |
rob | DAQ | Computers | br40m? |
The testpoint manager (which runs on fb40m)
crashed this afternoon. Upon re-starting |
|
|
455
|
Sun Apr 27 05:09:30 2008 |
rana | Configuration | IOO | MC WFS Whitening turned on | I [B]hardwired on the MC WFS whitening[/B]
filters.
|
|
|
454
|
Sun Apr 27 02:11:11 2008 |
rana | Configuration | IOO | MC WFS Notes | As noted in the elog from Friday, the WFS
has been bad ever since someone switched
on the digital whitening filters (FM1 & FM2)
|
|
|
453
|
Sat Apr 26 11:21:15 2008 |
ajw | Omnistructure | Computers | backup of /cvs/cds restarted | The backup of /cvs/cds (which runs as a cron
job on fb40m; see /cvs/cds/caltech/scripts/backup/000README.txt)
|
|
|
452
|
Sat Apr 26 01:45:38 2008 |
Andrey | Summary | PEM | Weather Station enhancement | Two more things concerning weather monitoring
have been done during this week.
|
|
|
451
|
Fri Apr 25 20:53:02 2008 |
rana | Configuration | IOO | MC WFS with more gain | Quick update: we found that the reason for
the MC WFS instability was that the digital
anti-whitening was one but not the analog |
|
|
450
|
Fri Apr 25 15:44:21 2008 |
steve | Update | PSL | scattering measurments | In pursuit of a low back scattering, high
power beam dump we looked at materials such:
polished copper, polished aluminum, diamond |
6x |
|
449
|
Fri Apr 25 13:53:11 2008 |
josephb | Summary | Computers | Network setup | This is the promised more in detail summary
from Andrey's log ID 444.
|
|
|
448
|
Fri Apr 25 13:20:04 2008 |
Andrey | Update | PEM | Microphone test | In response to Rana's request, I tested the
microphone (if it is alive or not) by clapping
my hands and speaking aloud nearby.
|
|
|
447
|
Fri Apr 25 11:33:40 2008 |
Andrey | Configuration | Computers | Computer controlling vaccum equipment |
[COLOR=blue]Old computer[/COLOR] (located
in the south-end end of the interferometer |
|
|
446
|
Thu Apr 24 23:50:10 2008 |
rana | Update | General | Syringes in George the Freezer | There are some packets of syringes in the
freezer which are labeled as belonging to
an S. Waldman.
|
|
|
445
|
Thu Apr 24 23:27:48 2008 |
rana | Update | PEM | acoustic noise in MC_F | I looked at the [COLOR=darkblue][FONT=Comic
Sans MS][SIZE=3]coherence between the Microphone
in the PSL (PEM-AS_MIC) and the MC_F[/SIZE][/FONT][/COLOR] |
|
|
444
|
Thu Apr 24 22:06:47 2008 |
Andrey | Summary | Computers | Ethernet Cables and Hubs | Today in the morning (between 8.30AM and noon)
Joe and I were working on understanding which
ethernet cables connect "processors controlling |
|
|
443
|
Thu Apr 24 15:57:53 2008 |
steve | Configuration | SAFETY | Safety at AP-ISCT | I measured the output power of the psl after
the mechanical shutter.
|
|
|
442
|
Thu Apr 24 14:10:26 2008 |
rob | Update | Locking | locking work | [I]Rob, Johnnie[/I]
We made some progress on locking last night |
|
|
441
|
Thu Apr 24 11:50:10 2008 |
josephb | Summary | Computer Scripts / Programs | Useful tidbits learned while tracking the network setup | In process of understanding the network setup
I've learned several things:
|
|
|
440
|
Wed Apr 23 22:39:54 2008 |
Andrey | DAQ | Computer Scripts / Programs | Problem with "get_data" and slow PEM channels |
It turns out that I cannot read minute trends
for the slow weather channels for more than |
|
|
439
|
Tue Apr 22 22:51:30 2008 |
rana | Configuration | IOO | McWFS Status | I've been working a little on the MC WFS in
the last few days. I have made many
changes to the sensing matrix script and |
|
|
438
|
Tue Apr 22 22:19:02 2008 |
rob | Metaphysics | lore | jiggling sliders |
In the interests of tacit communication of
scientific knowledge, I here reveal a nugget |
|
|
437
|
Tue Apr 22 17:08:04 2008 |
Caryn | Update | IOO | no signal for C1:IOO-MC_L | C1:IOO-MC_L signal was at zero for the past
few days |
|
|
436
|
Tue Apr 22 16:17:48 2008 |
rob | Update | SUS | end station sus front-end bug fix | [quote]installed and started new susEtmx.o
and susEtmy.o to fix a problem with ETMY
optical lever variables.[/quote]
|
|
|
435
|
Tue Apr 22 10:59:24 2008 |
rob | Update | SUS | MC1 electronics busted | [quote]I spent some time trying to fix the
utter programming fiasco which was our MCWFS
diagonalization script.
|
|
|
434
|
Tue Apr 22 08:34:22 2008 |
josephb | Configuration | Cameras | Current Network Diagram | The attached network diagram has also been
added to the 40m Wiki at http://lhocds.ligo-wa.caltech.edu:8000/40m/Image_Processing_with_GigE_Cameras |
|
|
433
|
Mon Apr 21 13:12:21 2008 |
rob | Update | Computer Scripts / Programs | tdsread bugs | [quote][COLOR=darkred]There seems to be a
problem with reading the C1:IOO-MASTER_OVERFLOW
field
|
|
|
432
|
Mon Apr 21 12:58:42 2008 |
rob | Update | ASS | check adaptive | [quote]
Caryn Palatchi (a Caltech undergrad who just |
|
|
431
|
Sun Apr 20 23:39:57 2008 |
rana | Summary | SUS | MC1 electronics busted | I spent some time trying to fix the utter
programming fiasco which was our MCWFS diagonalization
script.
|
|
|
430
|
Sun Apr 20 20:29:46 2008 |
rana | Update | Computer Scripts / Programs | tdsread bugs | [COLOR=darkred]There seems to be a problem
with reading the C1:IOO-MASTER_OVERFLOW field
|
|
|
429
|
Sun Apr 20 18:23:27 2008 |
rana | Summary | LSC | locking attempts | I noticed that the adaptive FF for the MC
had stopped doing anything; this turned out
|
|
|
428
|
Fri Apr 18 19:46:08 2008 |
rana | Update | ASS | check adaptive | I restarted the adaptive code today using
'startass' and 'upass'.
I moved them into the scripts/ASS/ subdirectory.
|
|
|
427
|
Fri Apr 18 16:48:13 2008 |
Andrey | Update | PEM | Rain collector of weather station |
Today the rain collector of our weather station
was cleaned. As a result, we checked that |
|
|
426
|
Fri Apr 18 16:27:04 2008 |
rob | Update | SUS | end station sus front-end bug fix | [quote]installed and started new susEtmx.o
and susEtmy.o to fix a problem with ETMY
optical lever variables.[/quote]
|
|
|
425
|
Fri Apr 18 16:02:58 2008 |
alex | Update | SUS | end station sus front-end bug fix | installed and started new susEtmx.o and susEtmy.o
to fix a problem with ETMY optical lever
variables. |
|
|
424
|
Thu Apr 17 20:17:37 2008 |
Andrey | Update | PEM | Two issues with our weather station |
I encountered two difficulties working with
the "Weather Station".
|
|
|
423
|
Thu Apr 17 15:00:59 2008 |
steve | Update | VAC | vac controller computer to be replaced | Now that Rosalba is up and running someone
should step forward to volunteer for this
job.
|
|
|
422
|
Wed Apr 16 21:11:12 2008 |
rana | Summary | DAQ | AA/AI Filters for the DAQ & FE systems | I used Foton to make up some new filters which
will be used all over the project in order
to downsample/upsample.
|
|
|
421
|
Wed Apr 16 10:20:01 2008 |
Andrey | Update | Computers | Rosalba and linux3 | [quote]There is a new computer in the control
room -- its called [B][COLOR=purple]Rosalba[/COLOR][/B],
in keeping with our naming convention. Its |
|