| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
9729
|
Mon Mar 17 09:27:05 2014 |
Steve | Update | SUS | 4.4M local earthquake | It looks like that ETMX have
2 sticky magnets.
|
|
|
9728
|
Fri Mar 14 12:18:55 2014 |
Koji | Update | LSC | Composite Error Signal for ARms (9) | Asymptotic cooling of the mirror motion
with CESAR was tested.
With ALS and the full control bandwidth |
|
|
9727
|
Fri Mar 14 10:31:10 2014 |
jamie | Update | Green Locking | ALS Slow servo settings |
|
|
|
9726
|
Fri Mar 14 09:44:34 2014 |
Steve | Update | LSC | morning lock | |
|
|
9725
|
Thu Mar 13 16:05:48 2014 |
steve | Update | safety | safety audit 2014 |
|
|
|
9724
|
Thu Mar 13 01:18:00 2014 |
Jenne | Update | LSC | Composite Error Signal for ARms (8) | [Jenne, EricQ]
As Koji suggested in his email this
afternoon, we looked at how much actuator |
7x |
|
9723
|
Wed Mar 12 08:40:42 2014 |
Steve | Update | VAC | RGA scan at day 35 |
|
|
|
9722
|
Tue Mar 11 21:38:43 2014 |
manasa | Update | Computer Scripts / Programs | IFO configure scripts in burt modified | I have modified the IFOconfigure scripts
and the corresponding .req files for the |
|
|
9721
|
Tue Mar 11 19:38:26 2014 |
manasa | Update | Green Locking | ALS Slow servo settings |
|
|
|
9720
|
Tue Mar 11 19:07:24 2014 |
ericq | Update | Electronics | High gain Trans PD electronics change | Speaking of the whitening board, I had
neglected to post details showing the the
whitening was at least having a positive |
|
|
9719
|
Tue Mar 11 18:34:11 2014 |
Jenne | Update | LSC | Composite Error Signal for ARms (7) | [Nic, Jenne, EricQ, and Koji]
We
have used CESAR successfully to bring the |
|
|
9718
|
Tue Mar 11 18:33:21 2014 |
Koji | Update | LSC | Composite Error Signal for ARms (6) | Today we modified the CESAR block.
- Now the sign(X) function is in
a block. |
|
|
9717
|
Tue Mar 11 15:21:08 2014 |
Koji | Summary | LSC | Composite Error Signal for ARms (1) | True. But we first want to realize this
for a single arm, then move onto the two
arms case. |
|
|
9716
|
Tue Mar 11 15:19:45 2014 |
Jenne | Update | Electronics | High gain Trans PD electronics change | As
part of our CESAR testing last night, we
had a look at the noise of the 1/sqrt(TR) |
|
|
9715
|
Tue Mar 11 15:14:34 2014 |
den | Summary | LSC | Composite Error Signal for ARms (1) |
|
|
|
9714
|
Tue Mar 11 15:01:28 2014 |
ericq | Update | Computer Scripts / Programs | MC Signal Monitoring | Two weeks ago (Feb 26) I took the "Q
MON" output of the demodulator that
sends its Q output to the MC servo board |
|
|
9713
|
Tue Mar 11 14:49:01 2014 |
Koji | Summary | LSC | Important notice on the XARM servo | The nominal gain
of the XARM for the POX11 error signal is |
|
|
9712
|
Mon Mar 10 21:16:56 2014 |
Koji | Summary | LSC | Composite Error Signal for ARms (5) | After making the CDS modification, CESAR
was tested with ALS.
First of all, we run CESAR with threshold |
|
|
9711
|
Mon Mar 10 21:16:13 2014 |
Koji | Summary | LSC | Composite Error Signal for ARms (4) | The LSC model was modified for CESAR.
A block called ALSX_COMBINE was made
in the LSC block. This block receives the |
|
|
9710
|
Mon Mar 10 21:14:58 2014 |
ericq | Summary | LSC | Composite Error Signal for ARms (3) | Using Koji's mathematica notebook, and
Nic's python work, I set out to run a time
domain simulation of the error signal, with |
|
|
9709
|
Mon Mar 10 21:13:43 2014 |
nicolas | Summary | LSC | Composite Error Signal for ARms (2) | In order to better understand how the composite
signal would behave in the presence of noise,
I decided to do a simple analysis of the |
|
|
9708
|
Mon Mar 10 21:12:30 2014 |
Koji | Summary | LSC | Composite Error Signal for ARms (1) | The ALS error (i.e. phase tracker output)
is linear everywhere, but noisy.
The 1/sqrt(TR) is linear and less |
|
|
9707
|
Mon Mar 10 12:49:27 2014 |
Jenne | Update | IOO | PMC input pointing misaligned | I don't know why, but as you can see in
Steve's plot from earlier this morning, the
PMC transmission has been going down significantly |
|
|
9706
|
Mon Mar 10 11:42:36 2014 |
Jenne | Update | CDS | fb timing was off | fb timing was off again. |
|
|
9705
|
Mon Mar 10 09:28:48 2014 |
steve | Update | IOO | IOO pointing 2 days | Morning seconds without adjustment.
|
|
|
9704
|
Fri Mar 7 16:56:17 2014 |
steve | Update | IOO | IOO qpds centered |
|
|
|
9703
|
Fri Mar 7 16:13:03 2014 |
Steve | Update | VAC | pumping speed is recovered |
|
|
|
9702
|
Fri Mar 7 00:43:34 2014 |
manasa | Update | LSC | ALS C&D locked (on MC2 and ETMs) and IR resonance obtained | [EricQ, Manasa]
|
|
|
9701
|
Thu Mar 6 19:17:05 2014 |
manasa | Update | IOO | MC calmed down |
|
|
|
9700
|
Thu Mar 6 17:34:03 2014 |
rana | Update | SUS | Oplev Tuning - Cartoon cost function |
|
|
|
9699
|
Thu Mar 6 11:43:17 2014 |
steve | Update | General | Guralp control unit | CMG-40T handheld controller unit is missing
its power supply. In order to zero the instrument
one has to apply plus and minus DC voltage. |
|
|
9698
|
Thu Mar 6 11:15:32 2014 |
Koji | Summary | LSC | Stuck at step 2 | You don't need to make transition from
ALS X/Y to ALS C/D. Just stabilize the arms
with ALS C/D from the beginning. |
|
|
9697
|
Thu Mar 6 09:47:11 2014 |
Steve | Update | IOO | MC trend of 20 days |
|
|
|
9696
|
Wed Mar 5 22:32:21 2014 |
manasa | Update | LSC | Stuck at step 2 |
|
|
|
9695
|
Wed Mar 5 19:27:24 2014 |
manasa | Update | IOO | MC calmed down | The IMC has not been behaving well since
this morning and totally not happy when Q
was finishing his measurements. The WFS servo |
|
|
9694
|
Wed Mar 5 19:15:39 2014 |
Jenne | Summary | LSC | ALS offset moving script modified |
|
|
|
9693
|
Wed Mar 5 18:04:36 2014 |
ericq | Update | LSC | Equivalent Displacement Noise from QPD Dark Noise in SQRTINV | At today's meeting, it was suspected that
these noise levels were far too low. (ELOG |
|
|
9692
|
Wed Mar 5 16:27:51 2014 |
ericq | Update | LSC | Preliminary Arm Loss Measurements | I measured the arm cavity losses as Kiwamu
did way back in ELOG
5074. |
|
|
9691
|
Wed Mar 5 11:33:10 2014 |
Koji | Summary | LSC | 2 arm ALS->LSC transition - road map | Step by step description of transition
from 2arm ALS to Common/Differential LSC
for FPMI |
|
|
9690
|
Wed Mar 5 09:52:31 2014 |
Jenne | Update | SUS | Oplev Tuning - Cartoon cost function | Not a whiteboard, but here's a cartoon
of my oplev cost function cartoon.
For the "maximize this area" and |
|
|
9689
|
Tue Mar 4 17:07:27 2014 |
Steve | Update | PEM | floor cleaning under racks |
|
|
|
9688
|
Mon Mar 3 23:16:06 2014 |
rana | Update | LSC | Y Arm Loop Shape found to be weird: changed now | I was getting the Y Arm ready for
Eric Q's loss measurements and so I looked
at the noise and loop shape. The loop shape |
|
|
9687
|
Mon Mar 3 22:21:43 2014 |
Koji | Summary | LSC | PRMIsb locked with REFL165I&Q | Successful
PRMIsb locking with REFL165I/Q
My |
|
|
9686
|
Mon Mar 3 21:50:35 2014 |
Jenne | Update | Computer Scripts / Programs | Dropbox installed on Workstations | I have installed Dropbox on the 40m workstations,
using the foteee account.
I put it in /users/Dropbox. |
|
|
9685
|
Mon Mar 3 17:35:10 2014 |
Koji | Update | LSC | Various demod phase measurement | I wanted to check how the refl signals
looked like.
I decided to measure the demod phase |
|
|
9684
|
Mon Mar 3 11:55:39 2014 |
Koji | Update | CDS | fb timing was off | We need to correctly setup crontab or rc.local
for the frontend machines. |
|
|
9683
|
Mon Mar 3 10:42:53 2014 |
Jenne | Update | CDS | fb timing was off | ...yet again.
lsc and sus needed mxstream restarts
after I restarted the ntp on fb. |
|
|
9682
|
Thu Feb 27 22:25:29 2014 |
rana | Update | SUS | Oplev Tuning Party - round 1 commentary | in order to Win in Loop Tuning,
you must draw a |
|
|
9681
|
Thu Feb 27 13:11:13 2014 |
steve | Update | safety | safety audit correction |
|
|
|
9680
|
Thu Feb 27 01:02:57 2014 |
Jenne | Update | SUS | Oplev Tuning Party - round 1 | [Jenne, Vivien]
We
had an oplev tuning party this afternoon. |
|