| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
4090
|
Wed Dec 22 21:38:47 2010 |
kiwamu | Configuration | VAC | Re:slow pumpdown at 12 hours | I stopped the pumping at 9:30 pm. Now
we are at 29 torr.
|
|
|
4094
|
Thu Dec 23 13:30:09 2010 |
steve | Configuration | VAC | slow pumpdown complete | The pump down continued this morning by
the removal of the butterfly valve. Two roughing
pumps were used to reach 500 mTorr |
|
|
4100
|
Sat Jan 1 16:36:16 2011 |
rana | Configuration | SUS | rampdown.pl was not running | The
crontab for op340m which runs various IFO
maintenance activities has been set to the |
|
|
4137
|
Tue Jan 11 17:08:43 2011 |
Suresh | Configuration | PSL | replaced the pzt-steering mirror on PSL | [Rana,
Jenne, Suresh]
Yesterday, |
|
|
4143
|
Wed Jan 12 17:22:47 2011 |
Suresh | Configuration | Locking | MC demod phase adjusted to minimise the I output | [Koji, Suresh]
We wanted to check and make sure
that the relative phase of the two inputs |
|
|
4158
|
Fri Jan 14 17:58:50 2011 |
Osamu | Configuration | General | Standalone RT setup | I'll be gone to Hanford site next
week and come back to Caltech on 24th's week.
I setup a standalone RT system at |
|
|
4162
|
Mon Jan 17 04:10:10 2011 |
rana | Configuration | Computers | NTPD restarted on c1dcuepics (to fix the MEDM screen times) | I installed NTPD on Megatron (its Ubuntu,
so different from the CentOS workstations).
Here's the terminal cap to show that its |
|
|
4178
|
Thu Jan 20 17:00:39 2011 |
Aidan | Configuration | Locking | Ballpark figures for Green Locking PLLs (Digital vs Analogue) | If we use a digital PLL for locking the
frequency of the PSL and END green lasers
then we can expect a UGF of around 1kHz (assuming |
|
|
4182
|
Fri Jan 21 11:45:01 2011 |
Aidan | Configuration | Locking | Ballpark figures for Green Locking PLLs (Digital vs Analogue) |
|
|
|
4186
|
Fri Jan 21 23:55:25 2011 |
rana | Configuration | LSC | Phase Noise Measurement filter | We've set up a beat note measurement between
the VCO driver and the Marconi (see Suresh's
elog). |
|
|
4221
|
Fri Jan 28 13:05:56 2011 |
Koji | Configuration | Computers | script path fixed | We had some issues in terms of the script
paths. I have fixed it by replacing /cvs/cds/caltech/scripts
to /cvs/cds/rtcds/caltech/c1/scripts |
|
|
4223
|
Fri Jan 28 15:50:44 2011 |
Jenne | Configuration | PSL | The PSL has a name! | Back in the days when we were talking about
getting a new 2W PSL, I was given naming
rights by Rana for this new laser. |
|
|
4258
|
Mon Feb 7 21:23:11 2011 |
rana | Configuration | PSL | PSL FSS Temperature Sensor Interface box removed | I noticed that the RMTEMP channel was spiking
myteriously when Kiwamu opened the PSL door.
We found out that the LEMO connectors would |
|
|
4266
|
Wed Feb 9 23:48:12 2011 |
Suresh | Configuration | Cameras | Video Cable work: New Labels | [Larisa, Aidan,Steve,Suresh]
Today was the first
session for implementing the new video cabling |
|
|
4273
|
Fri Feb 11 09:27:03 2011 |
steve | Configuration | VAC | RGA scan | The RGA scan is normal at day 52 of this
pump down.
Light power BS 1064nm ~25mW, ETMX |
|
|
4301
|
Tue Feb 15 11:57:06 2011 |
steve, valera | Configuration | PSL | PMC swap | We swapped the PMC s/n 2677 for s/n
lho006.
The table below summarizes the power |
|
|
4331
|
Sun Feb 20 21:22:33 2011 |
rana, kiwamu, valera | Configuration | IOO | MC Servo Change | For some reason, Kiwamu |
|
|
4335
|
Tue Feb 22 00:18:47 2011 |
valera | Configuration | | c1ioo and c1ass work and related fb crashes/restarts | I have been editing and reloading the c1ioo
model last two days. I have restarted the
frame builder several times. After one of |
|
|
4345
|
Wed Feb 23 16:34:42 2011 |
valera | Configuration | | pmc lens staged | I put the PMC last mode matching lens (one
between the steering mirrors) on a translation
stage to facilitate the PMC mode matching. |
|
|
4350
|
Thu Feb 24 16:47:26 2011 |
steve | Configuration | PSL | shutter is back on the PSL output | Uniblitz mechanical shutter was placed
into the beam path of the PSL output with
razor beam trap. The output power was 1.39W |
|
|
4367
|
Wed Mar 2 16:51:53 2011 |
steve | Configuration | Green Locking | mech shutter in place at the south end | I moved old POX shutter from ITMY optical
table to the south end. MEDM POX mechanical
shutter screen is now closing the green beam |
|
|
4368
|
Wed Mar 2 17:19:58 2011 |
Aidan | Configuration | Green Locking | Moved PDH PD on end table | As previously noted, there are multiple
beams coming back from the ETM surface onto
the PDH PD on the end table. They are spread |
|
|
4402
|
Thu Mar 10 17:03:48 2011 |
Larisa Thorne | Configuration | Electronics | calculations for passive low pass filter on X arm | [Kiwamu, Larisa]
We want to increase gain in the lower |
|
|
4407
|
Sun Mar 13 00:00:58 2011 |
jzweizig, rana | Configuration | DAQ | NDS2 code change and restart | John has changed the NDS2 code and
restarted it on Mafalda. The issue is that
it goes off the rails everytime the DAQD |
|
|
4416
|
Fri Mar 18 17:55:58 2011 |
Suresh | Configuration | Green Locking | Work Plan for Y-end Aux laser installation | A rough
time-table and the various tasks are given
below: |
|
|
4422
|
Tue Mar 22 00:03:29 2011 |
Bryan | Configuration | Green Locking | PSL vs Y arm laser temperature pairing | OK. Today we did the same type of
measurement for the Y arm laser as was done
for the X arm laser here: |
|
|
4423
|
Tue Mar 22 00:23:20 2011 |
Jenne | Configuration | Green Locking | PSL vs Y arm laser temperature pairing |
|
|
|
4425
|
Tue Mar 22 19:03:45 2011 |
Bryan | Configuration | Green Locking | PSL vs Y arm laser temperature pairing |
|
|
|
4437
|
Thu Mar 24 13:50:30 2011 |
Bryan | Configuration | Green Locking | Y arm laser | Just a quick update... the Lightwave
laser has now been moved up to the end of
the Y arm. It's also been mounted on the |
|
|
4439
|
Thu Mar 24 15:30:59 2011 |
Bryan | Configuration | Green Locking | PSL vs Y arm laser temperature pairing | Fine-grained temperature |
|
|
4440
|
Thu Mar 24 16:33:32 2011 |
Bryan | Configuration | Green Locking | PSL vs Y arm laser temperature pairing | X_arm and Y_arm vs PSL |
|
|
4459
|
Wed Mar 30 02:55:02 2011 |
Suresh | Configuration | Electronics | RF System : Status and Plans | I have prepared several diagrams outlining
the current state of the RF System.
These are uploaded into the svn40m |
|
|
4460
|
Wed Mar 30 16:32:29 2011 |
Aidan | Configuration | Computer Scripts / Programs | Added a sitemap alias | I added an alias to the sitemap MEDM screen
in /cvs/cds/caltech/target/cshrc.40m
Now you can enjoy launching sitemap |
|
|
4463
|
Wed Mar 30 18:50:57 2011 |
Koji | Configuration | Computer Scripts / Programs | Added a sitemap alias | I thought that "m40m" was the
traditional alias for the sitemap...
rossa:~>alias |
|
|
4464
|
Wed Mar 30 19:43:33 2011 |
Bryan | Configuration | Green Locking | The wonderful world of mode-matching | Right. I've got a whole load of info and
data and assorted musings I've been saving
up and cogitating upon before dumping it |
|
|
4465
|
Wed Mar 30 19:54:19 2011 |
Bryan | Configuration | Green Locking | The wonderful world of mode-matching | |
|
|
4466
|
Wed Mar 30 20:08:34 2011 |
Bryan | Configuration | Green Locking | The wonderful world of mode-matching | Step 2: Getting the beam |
|
|
4467
|
Wed Mar 30 20:14:17 2011 |
Bryan | Configuration | Green Locking | The wonderful world of mode-matching | Additional: |
|
|
4468
|
Wed Mar 30 20:31:30 2011 |
Bryan | Configuration | Green Locking | The wonderful world of mode-matching | Step |
|
|
4469
|
Wed Mar 30 20:50:43 2011 |
Bryan | Configuration | Green Locking | The wonderful world of mode-matching | Step |
|
|
4470
|
Wed Mar 30 21:21:15 2011 |
Bryan | Configuration | Green Locking | The wonderful world of mode-matching | Step 4: Matching into |
|
|
4473
|
Thu Mar 31 02:59:49 2011 |
Koji | Configuration | Green Locking | The wonderful world of mode-matching | I went through the entries.
1. Give us a photo of the day. i.e.
Faraday, tilted lens, etc... |
|
|
4475
|
Thu Mar 31 11:30:51 2011 |
steve | Configuration | General | strain relieved rf cables | I strain relieved RF cables labeled 33
MHZ LO and 166 MHZ to EOM at 1X2 This
is a temporary setup for the 11 MHZ |
|
|
4476
|
Thu Mar 31 14:10:00 2011 |
Bryan | Configuration | Green Locking | The wonderful world of mode-matching |
|
|
|
4477
|
Thu Mar 31 15:23:14 2011 |
Bryan | Configuration | Green Locking | The wonderful world of mode-matching |
|
|
|
4481
|
Fri Apr 1 18:54:41 2011 |
Bryan | Configuration | Green Locking | Y end doubling oven | The doubling oven is now ready to go for
the Y arm. The PPKTP crystal is mounted in
the oven: |
|
|
4485
|
Mon Apr 4 14:20:32 2011 |
Bryan | Configuration | Green Locking | The wonderful world of mode-matching | |
|
|
4486
|
Mon Apr 4 18:58:44 2011 |
Bryan | Configuration | Green Locking | A beam of purest green | We now have green light at the Y end.
The set-up (with careful instructions |
|
|
4493
|
Wed Apr 6 18:55:49 2011 |
Jamie, Larisa | Configuration | LSC | major AP table cleanup | We ripped out all of the old AS, PLL, and
REFL paths, green, orange, and cyan respectively
on the old |
|
|
4495
|
Wed Apr 6 22:13:24 2011 |
Bryan | Configuration | Green Locking | Resonating green light! | Every so often things just work out. You
do the calculations, you put the lenses on
the bench, you manually adjust the pointing |
|