| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
2495
|
Sun Jan 10 15:47:26 2010 |
Koji | Update | SUS | transfer function measurement of the quadrant maglev circuit | 1. Why do all of the BNCs have no GND connection?
Each should have the individual cables to
the ground. Each signal line and the corresponding |
|
|
2494
|
Sun Jan 10 13:32:09 2010 |
Haixing | Update | SUS | transfer function measurement of the quadrant maglev circuit | I have assembled the circuit and the
control box for the quadrant magnetic
levitation yesterday. The final setup |
6x |
|
2493
|
Sat Jan 9 15:02:01 2010 |
Alberto | Update | ABSL | PRC scanning | I scanned the PRC in the frequency range
of 30-60 MHz, untill the PLL lost lock. But
everything is working fine.
The |
|
|
2492
|
Sat Jan 9 11:07:30 2010 |
Alberto | Update | LSC | Problems trying to lock the arms |
|
|
|
2491
|
Sat Jan 9 09:47:03 2010 |
Alberto | Update | LSC | Problems trying to lock the arms | This morning I've been having problems
in trying to lock the X arm.
The X arm's filter FM6 in the LSC |
|
|
2490
|
Fri Jan 8 20:13:49 2010 |
Alberto, JoB | Configuration | Computers | The 40m Kaiser Permanent Reboot Marathon | This morning after Alex and Jo's tinkering
with Megatron the RFM network crashed and
it brought down also some computers. The |
|
|
2489
|
Fri Jan 8 18:20:12 2010 |
steve | Metaphysics | Treasure | Rob now can concentrate on his thesis | We are celebrating Rob's promotion to thesis
poetry. These pictures were taken on
December 9, 2009 |
|
|
2488
|
Fri Jan 8 15:40:14 2010 |
josephb, alex | Update | Computers | RFM and RCG | Alex added a new module to the RCG, for
generating RFMIO using floats. This
has been commited to CVS. |
|
|
2487
|
Fri Jan 8 11:43:22 2010 |
josephb, alex | Update | Computers | RFM and Megatron | Alex came over with a short RFM cable this
morning. We used it to connect the
rfm card in c1iscey to the rfm card megatron |
|
|
2486
|
Fri Jan 8 10:38:35 2010 |
josephb, koji | Update | Computers | RFM and Megatron | Last night, we installed the VMI 5565 RFM
card into Megatron. After turning off
the watchdogs for the ETMY optic, we disconnected |
|
|
2485
|
Fri Jan 8 10:03:04 2010 |
Alberto | Omnistructure | LSC | SPOB shutter was closed | This morning I found that there was no
light on the SPOB PD. I went looking at the
photodetector and I found that the shutter |
|
|
2484
|
Thu Jan 7 14:55:36 2010 |
Jenne | Update | Computers | We haven't had a bootfest yet this week.....so today's the day |
|
|
|
2483
|
Thu Jan 7 14:08:46 2010 |
Jenne | Update | Computers | We haven't had a bootfest yet this week.....so today's the day | All the DAQ screens are bright red.
Thumbs down to that. |
|
|
2482
|
Wed Jan 6 16:48:52 2010 |
steve | Bureaucracy | SAFETY | copied NPRO key | We lost our key to the Lightwave 125/6-OPN-PS
The key shop just made one look a like that
works. |
|
|
2481
|
Wed Jan 6 03:44:41 2010 |
Koji | Configuration | IOO | Elusive Mode Matching Solution found! | I
am in the way to get a reasonable optical
layout. |
|
|
2480
|
Tue Jan 5 17:32:59 2010 |
Jenne | Update | WienerFiltering | New Wiener Filters installed in PEM IIR matrix on OAF screen | EDIT 6
Jan 2010: |
|
|
2479
|
Tue Jan 5 13:23:45 2010 |
Alberto | Omnistructure | Environment | turning page | In the lab there are lots of old posters
with outdated autocad drawings, or printouts
with schematics of old electronics hanging |
|
|
2478
|
Tue Jan 5 11:00:04 2010 |
rana | Omnistructure | Environment | Added new wall cable-racks |
|
|
|
2477
|
Tue Jan 5 10:26:32 2010 |
Alberto, Steve | Omnistructure | Environment | Added new wall cable-racks | we hung two new WALL cable racks.
One is on the pillar next to the Sp table,
the other is next to the PSL computer rack. |
|
|
2476
|
Tue Jan 5 09:18:38 2010 |
Alberto | Omnistructure | Electronics | Universal PDH Box Stored in the RF Cabinet | FYI: I stored the Universal PDH boxes in
the RF cabiner in the Y arm. |
|
|
2475
|
Tue Jan 5 01:31:09 2010 |
Jenne | Update | WienerFiltering | New Wiener Filters installed in PEM IIR matrix on OAF screen | Using the techniques employed at LLO, and
then by Rana here at the 40m a few weeks
ago, Wiener filters have been installed on |
|
|
2474
|
Mon Jan 4 17:26:01 2010 |
Mott | Update | General | T & R plots for Y1 and Y1S mirrors | The most up-to-date T and R plots for the
Y1 and Y1S mirrors, as well as a T measurement
for the ETM, can be found on: |
|
|
2473
|
Mon Jan 4 17:21:30 2010 |
Jenne | Configuration | IOO | Elusive Mode Matching Solution found! | I think I have
finally found a Mode Matching solution for |
|
|
2472
|
Mon Jan 4 09:52:40 2010 |
rana | Configuration | Cameras | ITMX camera and PSL channels | I
fixed up the ITMX camera like we did for
ITMY recently (removed T's and added strain |
|
|
2471
|
Sun Jan 3 08:23:39 2010 |
rana | Configuration | CDS | autoburt.pl 'fixed' for post 2009 years | Tobin & Keith pointed out in the
LLO
ilog that there was a code bug |
|
|
2470
|
Wed Dec 30 22:17:07 2009 |
kiwamu | Update | General | Camera input and monitor output | The input channels of the cameras and
the output channels for the monitors are
summarized on the |
|
|
2469
|
Wed Dec 30 20:33:36 2009 |
rana, alberto | Configuration | Cameras | ITMY & MC2 Camera work | We
restored the good state of the ITMY camera |
|
|
2468
|
Wed Dec 30 18:01:03 2009 |
Alberto, Rana | Update | General | All watchdogs tripped this morning |
|
|
|
2467
|
Wed Dec 30 10:58:48 2009 |
Alberto | Update | General | All watchdogs tripped this morning | This morning I found all the watchdogs
had tripped during the night.
I restored them all. |
|
|
2466
|
Wed Dec 30 09:57:53 2009 |
steve | Update | PSL | thirsty water chiller | I added 600 cc of Arrowhead Distilled Water
to the chiller.
60 days plot shows that about every |
|
|
2465
|
Tue Dec 29 13:57:20 2009 |
Rana, Kiwamu, and Haixing | Update | Photos | Photos of video switch box | Before we installed the video switch box,
we also took some photos of it. We uploaded
them onto the 40m Picasa. |
|
|
2464
|
Tue Dec 29 04:28:27 2009 |
kiwamu, rana, haixing | Update | Cameras | New Video Switch Installed | We have installed the new |
|
|
2462
|
Mon Dec 28 23:56:44 2009 |
kiwamu, rana | Update | Computers | add the HILO drift channels to the burt | The HIGH and LOW channels are added into
the burt request file "/target/c1losepics/autoBurt.req".
These values are used to colorize |
|
|
2461
|
Mon Dec 28 18:35:27 2009 |
Alberto | Update | ABSL | Working on the AP table |
|
|
|
2460
|
Mon Dec 28 15:34:14 2009 |
Alberto | Update | ABSL | Working on the AP table | I opened the auxiliary laser's shutter.
I'm currently working on the AP table. |
|
|
2459
|
Mon Dec 28 15:19:19 2009 |
Alberto | Update | Computers | Burtrestored to Dec 26 at 20:00 | Since it wasn't sure whether all the front-ends
had been restored after the bootfest, I burtrestored
everything to Dec 26 at 20:00. |
|
|
2458
|
Mon Dec 28 12:45:55 2009 |
Koji | Update | SUS | MC2 is having a bad day | The MCL path of MC2 was in a strange state
as the filters were activated as if it is
in lock even though we had no lock. So I |
|
|
2457
|
Mon Dec 28 12:35:57 2009 |
Jenne | Update | SUS | MC2 is having a bad day | MC2 is having a bad day, and I'm not yet
sure why. It's to do with the damping
though. When the damping is off, after |
|
|
2456
|
Mon Dec 28 10:29:31 2009 |
Jenne | Update | Computers | Monday Morning Bootfest | Nothing like a good ol' Bootfest to get
back into the swing of things after vacation....
It was a regular bootfest, keying |
|
|
2455
|
Mon Dec 28 01:17:01 2009 |
Koji | Update | Electronics | MCT QPD investigation | Unfortunately, the signals for individual
segments also suffer from the voltage drop
as all of the low impedance amplifiers are |
|
|
2454
|
Sun Dec 27 23:44:59 2009 |
rana | Update | Electronics | MCT QPD investigation |
|
|
|
2453
|
Sun Dec 27 20:05:28 2009 |
kiwamu | Update | Computers | can not communicate with front-ends | In this evening I found that fb40m has
been down, then I restarted fm40m successfully.
|
|
|
2452
|
Sat Dec 26 19:22:13 2009 |
Koji | Summary | General | Mode coupling of two astigmatic beams | In this note, amplitude and power couplings
of two astigmatic (0,0)-th order gaussian
modes are calculated. |
|
|
2451
|
Thu Dec 24 19:13:29 2009 |
Koji | Update | IOO | MCT QPD investigation | I found that MCT QPD has a dependence of
the total output on the position of the spot.
Since the QPD needs the supply and bias voltages |
|
|
2450
|
Thu Dec 24 01:25:29 2009 |
kiwamu | Update | Electronics | impedance analyzing | The
validation for high impedance measurement
has been well done. |
|
|
2449
|
Wed Dec 23 17:33:14 2009 |
rana | Update | ASS | OAF Feedaround ON and doing something good | The Rai box ran out of batteries a couple
of days ago and so the data is no good. I've
put the Ranger back on the SR560 for now |
|
|
2448
|
Wed Dec 23 16:34:25 2009 |
Koji | Update | IOO | MCT QPD/MC REFL QPD disabled | For a certain investigation of the sum/diff
module for MCT QPD/MC REFL QPD, I removed
it from the system. |
|
|
2447
|
Tue Dec 22 18:42:40 2009 |
Sanjit, Koji | Configuration | Adaptive Filtering | Readded DAQ channels to active list | Sometimes back we modified /cvs/cds/caltech/chans/daq/C1ASS.ini
to save some of the channels. The file was
reverted to default after the recent changes |
|
|
2446
|
Tue Dec 22 15:49:31 2009 |
kiwamu | Update | General | e-log restarted | I found the e-log has been down around
3:40pm, then I restarted the e-log. Now it's
working. |
|
|
2445
|
Tue Dec 22 13:14:37 2009 |
Alan | Omnistructure | PEM | miracle in the 40m |
|
|