| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
2523
|
Mon Jan 18 23:44:19 2010 |
kiwamu | Update | Electronics | triple resonant circuit for EOM | The first
design of the triple resonant EOM circuit |
|
|
2524
|
Tue Jan 19 00:10:44 2010 |
rana | Update | Electronics | triple resonant circuit for EOM | Very cool. |
|
|
2525
|
Tue Jan 19 02:39:57 2010 |
kiwamu | Update | Electronics | design complete --- triple resonant circuit for EOM --- | The design
of the triple resonant circuit has been fixed. |
|
|
2526
|
Tue Jan 19 02:40:38 2010 |
Koji | Update | Electronics | triple resonant circuit for EOM | The design looks very good. I have some
questions.
1. As far as I remember, you've |
|
|
2527
|
Tue Jan 19 03:04:14 2010 |
Koji | Update | Electronics | triple resonant circuit for EOM | Self-follow:
I got the answer of Q3 from the follow-up
entry. |
|
|
2528
|
Tue Jan 19 03:20:28 2010 |
Koji | Update | Electronics | design complete --- triple resonant circuit for EOM --- | First I was confused, but now I think I
understood.
My confusion: |
|
|
2529
|
Tue Jan 19 03:27:47 2010 |
kiwamu | Update | Electronics | Re: triple resonant circuit for EOM | 1. You are right, the gain for the
single resonant circuit was about 9.3 in
my measurement. |
|
|
2530
|
Tue Jan 19 10:30:29 2010 |
josephb | Update | Computers | Boot fest to restart the computer and c1iscey not responding. |
|
|
|
2531
|
Tue Jan 19 12:54:39 2010 |
Alberto | Update | ABSL | Measurement in progress | A measurement will be running for the next
hour. Please be careful. |
|
|
2532
|
Tue Jan 19 16:21:18 2010 |
Alberto | Update | ABSL | Watchdogs not working and then fixed | This afternoon the watchdogs stopped working:
they didn't trip when the suspension positions
crossed the threshold values. |
|
|
2533
|
Tue Jan 19 23:26:07 2010 |
kiwamu | Update | Electronics | Re:Re: triple resonant circuit for EOM |
|
|
|
2534
|
Wed Jan 20 20:11:56 2010 |
Alberto | Update | ABSL | Some preliminary results from measuring PRC's transmissivity for an amplitude modulated beam | Here I'm posting a plot showing a
set of measurements that I made in the past
few days to determine the absolute length |
|
|
2535
|
Thu Jan 21 10:09:27 2010 |
Koji | Summary | IOO | Photos of the optical tables | I made a wiki page dedicated for the photos
of the optical tables.
The current layouts were uploaded. |
|
|
2536
|
Thu Jan 21 10:31:13 2010 |
Koji | Update | ABSL | Some preliminary results from measuring PRC's transmissivity for an amplitude modulated beam | Nice
and interesting plot.
|
|
|
2538
|
Thu Jan 21 11:08:30 2010 |
kiwamu, steve | Update | VAC | Dry Pump replacement | This morning I and Steve replaced
the dry fore pump of TP3, which is located
under the y-arm. |
|
|
2539
|
Thu Jan 21 15:16:16 2010 |
josephb, koji | Summary | Computers | Megatron used to lock Y arm | We
succeeded in having a stable single arm (Y)
lock using Megatron to replace c1iscey.
Now |
|
|
2540
|
Thu Jan 21 17:23:30 2010 |
josephb,alex,koji | HowTo | Computers | RCG code fixes | In order to see the Contec DO-32L-PE
Digital output PCIe card with the new
controls, we had to add the CDO32 part to |
|
|
2541
|
Fri Jan 22 02:54:06 2010 |
Alberto | Update | ABSL | Overnight measurement | I'm leaving a measurement running overnight.
It should be done in about one hour.
Tomorrow morning, If you need to |
|
|
2542
|
Fri Jan 22 12:33:37 2010 |
josephb, alex | Update | Computers | Modified CDS_PARTS for Binary output | Turns out the CDSO32 part (representing
the Contec BO-32L-PE binary output) rquires
two inputs. One for the first 16 bits, and |
|
|
2543
|
Fri Jan 22 14:40:49 2010 |
Alberto | Update | ABSL | Overnight measurement |
|
|
|
2544
|
Mon Jan 25 11:42:24 2010 |
josephb | Update | Computers | Megatron and BO board | I was talking with Vladimir on Friday discussing
the Binary Output board, we looked at the
manual for it (Contec DO-32L-PE) and we realized |
|
|
2545
|
Mon Jan 25 16:30:37 2010 |
Alberto | Update | ABSL | 166 MHz sideband turned off | I turned off the modulation at 166MHZ
becasue I don't need it if I'm only locking
the PRC. |
|
|
2546
|
Mon Jan 25 16:46:33 2010 |
Alberto | Update | ABSL | 166 MHz sideband turned off |
|
|
|
2547
|
Tue Jan 26 03:28:56 2010 |
rana | Update | ABSL | 166 MHz sideband turned off |
You can turn the 166 off if
you want. MZ is unhappy after its turned |
|
|
2548
|
Tue Jan 26 19:51:44 2010 |
Sanjit, rana | Update | Adaptive Filtering | OAF details | We turned on the OAF again to make sure
it works. We got it to work well with the
Ranger as well as the Guralp channels. The |
|
|
2549
|
Tue Jan 26 20:18:32 2010 |
rana | Configuration | ALARM | op540m: alarms and BLRMS and StripTool restored | I turned the StripTool and ALARMS and BLRMS
back on on op540m. Looks like it has been
rebooted 5 days ago and no one turned these |
|
|
2550
|
Wed Jan 27 11:02:30 2010 |
Alberto | Update | ABSL | PRC Cavity Length | I fitted the data from scanning
the PRC by changing the beat frequency of
the auxiliary laser beam with the PSL beam.
The |
|
|
2551
|
Thu Jan 28 09:14:51 2010 |
Alberto | Configuration | Computers | c1iscey, c1iscex, c1lsc, c1asc rebooted | This morning the LSC scripts wheren't running
properly. I had to reboot c1iscey, c1iscex,
c1lsc, c1asc . |
|
|
2552
|
Thu Jan 28 09:17:32 2010 |
Alberto | Update | LSC | 166 Modulation turned off | I temporarily turned off the 166 modulation. |
|
|
2553
|
Fri Jan 29 12:06:58 2010 |
Alberto | Update | ABSL | Measurement running today at lunch time | I just started a measuremtn that will be
running for the next hour or so. Please be
careful with the interferometer. |
|
|
2554
|
Fri Jan 29 13:14:49 2010 |
Alberto | Update | ABSL | Measurement running today at lunch time |
|
|
|
2555
|
Mon Feb 1 18:31:00 2010 |
Sanjit | Update | Adaptive Filtering | OAF details | I tried downsampling value
32 (instead of 16), to see if it has any
effect on OAF. Last week I encountered some |
|
|
2556
|
Mon Feb 1 18:33:10 2010 |
steve | Update | MOPA | Ve half the lazer! | The 2W
NPRO from Valera arrived today and I haf |
|
|
2557
|
Mon Feb 1 21:51:12 2010 |
Sanjit | Update | Adaptive Filtering | OAF details | I tried some combination of PEM
channels and filters to improve OAF performance
at other frequencies, where we do not have |
|
|
2558
|
Tue Feb 2 10:38:30 2010 |
josephb | Update | Computers | Megatron BO test | Last night, I connected megatron's BO board
to the analog dewhitening board. However,
I was unable to lock the y arm (although |
|
|
2559
|
Tue Feb 2 13:14:09 2010 |
Koji | HowTo | IOO | Anatomy of New Focus Resonant EOM | Joe let me use the resonant EOM for GigE
phase camera for a while.
Then, I immediately started to open |
|
|
2560
|
Tue Feb 2 15:30:03 2010 |
Alberto | Frogs | Treasure | Wild Oats | FYI. Sitting on the top shelf of George
I found an opened jar of raspberry jam and
an opened jar of creamy peanut butter. Both |
|
|
2561
|
Tue Feb 2 16:10:09 2010 |
steve | Update | PEM | construction progress next door | CES construction is progressing. The 40m
suspensions are bearing well.
atm1, PEM vs sus plots of 120 |
|
|
2562
|
Tue Feb 2 18:15:47 2010 |
Alberto | Update | elog | Elog restarted it | Zach made me notice that the elog
had crashed earlier on this afternoon.
I just restarted it with the restarting |
|
|
2563
|
Tue Feb 2 22:39:12 2010 |
Jenne | Update | PSL | IFO isn't playing nice tonight | [Jenne, Kiwamu]
It's been an iffy last few hours
here at the 40m. Kiwamu, Koji and I |
|
|
2564
|
Wed Feb 3 01:17:19 2010 |
Koji | Update | PSL | IFO isn't playing nice tonight | I checked the situation from my home
and the problem was solved. |
|
|
2565
|
Wed Feb 3 07:57:01 2010 |
steve | Update | PSL | PMC transmission is low | The low PMC transmission alarm was on this
morning. The PMC alignment needs a touch
up. |
|
|
2566
|
Wed Feb 3 09:01:42 2010 |
rob | Update | lore | IFO isn't playing nice tonight |
|
|
|
2567
|
Wed Feb 3 10:46:12 2010 |
Alberto | Update | elog | elog restarted | Again, this morning Zach told me
that the elog had crashed while he was trying
to post an entry. |
|
|
2568
|
Wed Feb 3 11:13:15 2010 |
steve | Configuration | General | planed power outage for Sat. Feb 20 | The electrical shop has to connect the
new power transformer at CES. This means
we will have no AC power for ~8 hrs on Saturday, |
|
|
2569
|
Thu Feb 4 00:59:52 2010 |
rana | Update | elog | elog restarted | I restarted the ELOG on NODUS just
now. Our attempt to set up error logging
worked - it turns out ELOG was choking |
|
|
2570
|
Thu Feb 4 12:29:04 2010 |
josephb | Update | Computers | Martian IP switch over notes | What is the change:
We will be
moving the 131.215.113.XXX ip addresses of
the martian network over to a 192.168.XXX.YYY |
|
|
2571
|
Fri Feb 5 00:52:55 2010 |
Sanjit | Update | Adaptive Filtering | OAF at 0.1-1.0 Hz |
At 0.1-1.0Hz, there is some coherence
between MC_L and RANGER_Y & GUR_Y, see |
|
|
2572
|
Fri Feb 5 01:04:58 2010 |
Sanjit | Update | Adaptive Filtering | OAF at > 5Hz |
There is lot of coherence between
the error signal and PEM channels at 5-100Hz. |
|
|
2573
|
Fri Feb 5 11:01:49 2010 |
steve | Configuration | VAC | slow pumpdown valve | I have installed a slow start throttle
valve in front of V3 This spring loaded
valve will cut down on the flow at high pressures. |
|