| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
8996
|
Mon Aug 12 13:30:33 2013 |
Jamie | Update | CDS | X-End Green ASS - Roundup |
|
|
|
9044
|
Wed Aug 21 00:18:03 2013 |
Masayuki | Summary | Green Locking | X-arm PDH OLTF measurement | [Manasa Masayuki]
Today we measured the openloop transfer
function of the PDH green lock of the x-arm. |
|
|
9047
|
Wed Aug 21 19:37:25 2013 |
Masayuki | Summary | Green Locking | X-arm PDH OLTF measurement | [Manasa, Masyauki]
Today we measured OLTF of PDH green |
|
|
4490
|
Tue Apr 5 21:20:11 2011 |
Koji | Summary | Green Locking | X-arm cavity locked with LB1005 servo box | Last Thursday, I tested Newport
Servo Controller LB1005 with the X_arm
green PDH servo. |
|
|
717
|
Tue Jul 22 22:11:58 2008 |
Yoichi | Update | LSC | X-arm g factor measurement | Alberto, Yoichi
We measured the g factor of the X-arm by |
|
|
7224
|
Sat Aug 18 03:55:12 2012 |
Yoichi | Summary | LSC | X-arm locking again | Tonight, I worked on the X-arm locking
again. I did not have any significant progress,
but observed several issues and will give |
|
|
11978
|
Fri Feb 5 15:02:13 2016 |
gautam | Update | Green Locking | X-end NE cable | [Steve, gautam]
Steve thinks that the X-end Innolight
does not come with the noise-eater option |
|
|
4615
|
Tue May 3 15:59:22 2011 |
steve | Frogs | Photos | X-mas comes early | The little red all terrain cargo wagon
40" x 18" has just arrived
on pneumatic wheels. |
|
|
9584
|
Tue Jan 28 23:32:12 2014 |
Koji | Update | General | X/Y arm locked with the IR beam | [Koji EricQ]
The both arms have been locked
with IR and aligned by ASS. |
|
|
10492
|
Wed Sep 10 22:17:29 2014 |
Koji | Summary | LSC | X/Y green beat mode overlap measurement | [Koji Manasa]
We made quantitative inspection of
the X/Y green beat setup on the PSL table. |
|
|
11368
|
Mon Jun 22 12:57:09 2015 |
ericq | Summary | LSC | X/Y green beat mode overlap measurement redone | I took measurements at the green beat setup
on the PSL table, and found that our power
/ mode overlap situation is still consistent |
|
|
11370
|
Mon Jun 22 14:53:37 2015 |
rana | Summary | LSC | X/Y green beat mode overlap measurement redone |
Why is there a factor of 20 power
difference? Some of it is the IR laser power
difference, but I thought that was just a |
|
|
12587
|
Fri Oct 28 15:46:29 2016 |
gautam | Summary | LSC | X/Y green beat mode overlap measurement redone | I've been meaning to do this analysis
ever since putting in the new laser at the
X-end, and finally got down to getting all |
|
|
12531
|
Tue Oct 4 22:18:24 2016 |
Johannes | Update | General | X/YARM loss measurement | [gautam, johannes]
We let the PSL shutter closed overnight
and observed the POXDC, POYDC and ASDC offsets. |
|
|
17531
|
Thu Mar 30 09:51:41 2023 |
Paco | Update | ALS | XALS / YALS power normalized and noise spectra | After the XAUX - XARM lock was recovered
the C1:ALS-TRX_GAIN was set from 0.002 to
0.0006 to normalize the green transmission |
|
|
8554
|
Wed May 8 22:36:42 2013 |
Koji | Update | ASS | XARM ASS (YARM ASS - faster and more precise convergence) | Same ASS setup for the X arm has been
done.
Now |
|
|
16732
|
Thu Mar 17 16:50:53 2022 |
Paco | Update | BHD | XARM AUX alignment | [Ian, Paco]
We opened the ITMX chamber and
Inspected PR2 and LO1 and |
|
|
16735
|
Fri Mar 18 17:15:19 2022 |
Paco | Update | BHD | XARM AUX alignment cont. | [Paco, Ian]
First, we re-balanced the ITMX
OSEMs so that they would damp at around half-a-shadow. |
|
|
16739
|
Mon Mar 21 18:00:05 2022 |
Ian MacMillan | Update | BHD | XARM AUX alignment cont. | [Ian, Paco]
Continuing with the previous alignment
that we stoped on friday, we re set up my |
|
|
16399
|
Wed Oct 13 15:36:38 2021 |
Hang | Update | Calibration | XARM OLTF | We did a few quick XARM oltf measurements.
We excited C1:LSC-ETMX_EXC with a broadband
white noise upto 4 kHz. The timestamps for |
|
|
16363
|
Tue Sep 28 16:31:52 2021 |
Paco | Summary | Calibration | XARM OLTF (calibration) at 55.511 Hz | [anchal, paco]
Here is a demonstration of the
methods leading to the single (X)arm calibration |
|
|
16369
|
Thu Sep 30 18:04:31 2021 |
Paco | Summary | Calibration | XARM OLTF (calibration) with three lines | [anchal, paco]
We repeated the same procedure
as before, but with 3 different lines at |
|
|
7170
|
Tue Aug 14 04:37:06 2012 |
Yoichi | Summary | LSC | XARM Open Loop Gain | Yoichi, Rana
Here is the open loop gain of the
XARM loop. |
|
|
16303
|
Mon Aug 30 17:49:43 2021 |
Paco | Summary | LSC | XARM POX OLTF | Used diaggui to get OLTF in preparation
for optimal system identification / calibration.
The excitation was injected at the control |
|
|
16304
|
Tue Aug 31 14:55:24 2021 |
rana | Summary | LSC | XARM POX OLTF | this model doesn't seem to include
the analog AA, analog AI, digital AA, digital
AI, or data transfer delays in the system. |
|
|
16351
|
Tue Sep 21 11:09:34 2021 |
Anchal | Summary | CDS | XARM YARM UGF Servo and Oscillators added | I've updated the c1LSC simulink model
to add the so-called UGF servos in the XARM
and YARM single arm loops as well. These |
|
|
16354
|
Wed Sep 22 12:40:04 2021 |
Anchal | Summary | CDS | XARM YARM UGF Servo and Oscillators shifted to OAF | To reduce burden on c1lsc, I've shifted
the added UGF block to to c1oaf model. c1lsc
had to be modified to allow addition of an |
|
|
16830
|
Wed May 4 15:08:59 2022 |
Tega | Update | BHD | XARM alignment to get flashing | [Yuta, Tega]
We aligned the BS, ITMY, and ETMY
PIT and YAW to get the flashing on X-arm |
|
|
16352
|
Tue Sep 21 11:13:01 2021 |
Paco | Summary | Calibration | XARM calibration noise | Here are some plots from analyzing the
C1:LSC-XARM calibration. The experiment is
done with the XARM (POX) locked, a single |
|
|
16353
|
Wed Sep 22 11:43:04 2021 |
rana | Summary | Calibration | XARM calibration noise | I would expect to see some lower frequency
effects. i.e. we should look at the timeseries
of the demod with the excitation on and off. |
|
|
17300
|
Tue Nov 22 20:46:11 2022 |
Radhika | Update | ALS | XARM green laser lock debugging | [Paco, Anchal, Radhika]
We tried to debug why the XARM
green laser isn't catching lock with |
|
|
17306
|
Wed Nov 23 17:12:34 2022 |
Radhika | Update | ALS | XARM green laser lock debugging | I tested the mixer by feeding it a 300
kHz signal sourced from a Moku:Go. I kept
the LO input the same - 231.25 kHz from |
|
|
17330
|
Fri Dec 2 15:59:55 2022 |
Radhika | Update | ALS | XARM green laser lock debugging | I took a transfer function measurement
of the XEND PDH servo box, from servo input
to piezo output [Attachment 1]. The servo |
|
|
17340
|
Tue Dec 6 15:29:35 2022 |
Radhika | Update | ALS | XARM green laser lock debugging | [Radhika, JC]
We retook transfer function measurements
of the XEND PDH servo box, this time setting |
|
|
17341
|
Tue Dec 6 15:59:46 2022 |
Radhika | Update | ALS | XARM green laser lock debugging | [Radhika, Paco]
Paco suggested that alignment could
still be the primary reason why the XEND |
|
|
17358
|
Wed Dec 14 12:37:20 2022 |
Radhika | Update | ALS | XARM green laser lock debugging | On Monday I aimed to measure the transfer function
of the x-arm AUX PDH loop while momentarily |
|
|
17396
|
Thu Jan 12 15:31:27 2023 |
Radhika | Update | ALS | XARM green laser lock debugging | [Radhika, Anchal, Paco]
AUX
PDH Loop Stability |
|
|
17420
|
Wed Jan 25 12:49:14 2023 |
Radhika | Update | ALS | XARM green laser lock debugging | |
|
|
17437
|
Wed Feb 1 09:56:00 2023 |
Radhika | Update | ALS | XARM green laser lock debugging | |
7x |
|
17439
|
Wed Feb 1 12:55:14 2023 |
Radhika | Update | ALS | XARM green laser lock debugging | I reconnected the green REFL monitor channel
and acquired its spectra when the laser was
(mostly) locked. During the collection window, |
|
|
17469
|
Thu Feb 16 15:25:52 2023 |
Radhika | Update | ALS | XARM green laser lock debugging | After seeing a 560 Hz peak in the XAUX
REFL PD signal, I took spectra of the
PDH error signal (post-demod) [Attachment |
|
|
17470
|
Thu Feb 16 18:40:13 2023 |
Radhika | Update | ALS | XARM green laser lock debugging | [Rana, Radhika]
Yesterday we looked at the out-of-loop
PDH error signal of the AUX laser and determined |
|
|
17475
|
Tue Feb 21 19:04:15 2023 |
Radhika | Update | ALS | XARM green laser lock debugging | I retook the last spectrum measurement
of ALS beatnote fluctuations, with the HEPA
on and off. The top plot corresponds to BEATY, |
|
|
15884
|
Tue Mar 9 10:57:06 2021 |
Paco, Anchal | Summary | IMC | XARM lock and POX spectra | [Paco, Anchal]
- Upon arrival, MC is locked, and
we can see light in MON5 (PRM) (usually dark). |
|
|
11845
|
Thu Dec 3 19:10:28 2015 |
yutaro | Update | LSC | XARM lock with ITMX actuated and related change on ASS | To avoid the strange kicking of ETMX, I
locked XARM with ITMX actuated instead of
ETMX so that I changed elements of C1LSC_OUTPUT_MTRX; |
|
|
11860
|
Mon Dec 7 15:56:35 2015 |
yutaro | Update | LSC | XARM lock with ITMX actuated and related change on ASS | I changed the snapshot file for ASS, /opt/rtcds/caltech/c1/scripts/ASS_DITHER_ON.snap
as follows: |
|
|
69
|
Tue Nov 6 15:36:03 2007 |
rob | Update | LSC | XARM locked | Easily, after resetting the PSL Uniblitz shutters.
There's no entry from David or Andrey about
the recovery from last week's power outage, |
|
|
5804
|
Fri Nov 4 00:13:24 2011 |
Koji | Update | LSC | XARM locked with POX11 | XARM lock was achieved by POX11_I
Summary:
- The whitening gains of POX11_I |
|
|
12528
|
Mon Oct 3 21:24:02 2016 |
Johannes | Update | General | XARM loss measurement | [gautam, johannes]
I started a script on Friday night
to collect some data for a reflection armloss |
|
|
16975
|
Wed Jul 6 19:58:16 2022 |
Paco | Summary | NoiseBudget | XARM noise budget | [Anchal, Paco, Rana]
We locked the XARM
using POX11 |
|