| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
9072
|
Tue Aug 27 18:21:35 2013 |
Jenne | Configuration | Electronics | 110 MHz LO options | As I see it, we have a few options for
getting the 110 MHz LO to both the POP110
and AS110 demod boards. |
|
|
9071
|
Tue Aug 27 17:32:52 2013 |
Jenne | Configuration | Electronics | putting together a 110 MHz LSC demod board for AS | I measured the phase split between the
I and Q signals of my AS110 board.
To do so, I plugged the board into an empty |
|
|
9070
|
Tue Aug 27 15:44:08 2013 |
manasa | Update | CDS | Issues with ALS fixed | I figured out the problem with ALS from
yesterday. While the model was just fine,
the medm screens were not checked if they |
|
|
9069
|
Tue Aug 27 15:31:48 2013 |
Jenne | Configuration | Electronics | putting together a 110 MHz LSC demod board for AS |
|
|
|
9068
|
Tue Aug 27 02:18:28 2013 |
Jenne | Update | LSC | PRMI, DRMI sensing matrices | I have made a measurement of the PRMI and
the DRMI sensing matrices.
Keiko pointed out to me in an email |
|
|
9067
|
Mon Aug 26 20:13:17 2013 |
rana | Configuration | Electronics | putting together a 110 MHz LSC demod board for AS |
|
|
|
9066
|
Mon Aug 26 19:54:15 2013 |
manasa | Update | CDS | c1als model modified | I had made changes to the c1als model a
couple of weeks ago. I had removed all the
beat_coarse channels that had existed from |
|
|
9065
|
Mon Aug 26 19:31:22 2013 |
manasa | Update | SUS | PRM, ITMY watch dogs | PRM and ITMY were found with their watchdogs
shutdown this afternoon (cause unknown).
I re-engaged them. |
|
|
9064
|
Mon Aug 26 19:13:38 2013 |
Koji | Update | LSC | LSCoffset script updated | What do you mean???
What is the effect of the anti-whitening
filter? |
|
|
9063
|
Mon Aug 26 18:59:08 2013 |
Masayuki | Update | LSC | LSCoffset script updated | I made scripts/LSC/LSCoffsets2.py
which is the script to zero the dark offset
of all the LSC PD. The list of PDs |
|
|
9062
|
Mon Aug 26 18:55:18 2013 |
Jenne | Configuration | Electronics | putting together a 110 MHz LSC demod board for AS | I have modified one of the spare demod
boards that was sitting above the electronics
bench (the one which was unlabeled - the |
|
|
9061
|
Sun Aug 25 06:07:11 2013 |
rana | Update | LSC | DRMI Locked with improved lock streatches | We're ready
for using the auto configure.
We
can put our scripts for the MICH, PRMI, and |
|
|
9060
|
Sat Aug 24 00:11:07 2013 |
Koji | Update | LSC | DRMI Locked with improved lock streatches | Friday night |
|
|
9059
|
Fri Aug 23 21:01:38 2013 |
Alex Cole | HowTo | Electronics | Automated Photodetector Frequency Response System | This post describes how to use the
Automated Photodetector Frequency Response
System. |
|
|
9058
|
Fri Aug 23 14:19:28 2013 |
rana | Update | SUS | Violin filters moved to LSC, from SUS | Just to rephrase somewhat:
We balance the BS & PRM actuators |
|
|
9057
|
Fri Aug 23 01:52:34 2013 |
Jenne | Update | SUS | Violin filters moved to LSC, from SUS | [Rana, Jenne] |
|
|
9056
|
Thu Aug 22 22:05:36 2013 |
rana | Update | Green Locking | GTRY normalized | Meh.
600 counts is too weak. You should
fix the electronics so that the maximized |
|
|
9055
|
Thu Aug 22 21:16:47 2013 |
Manasa | Update | Green Locking | GTRY normalized | The Y arm green transmission has been measuring
in counts all along. I modified the gain
in the ALS-TRY filter module to normalise |
|
|
9054
|
Thu Aug 22 20:25:28 2013 |
Masayuki | Summary | Green Locking | Y-arm PDH OLTF measurement | [Manasa, Masayuki]
We measured the the openloop transfer
function of the PDH green lock of the y-arm.The |
|
|
9053
|
Thu Aug 22 13:20:54 2013 |
Koji | Update | LSC | DRMI Locked for 1+ minute!!!!!! | Don't go for a hacky solution. We want
to climb a staircase step by step.
Prepare an independent 110MHz demod |
|
|
9052
|
Thu Aug 22 13:03:40 2013 |
Jenne | Update | LSC | DRMI Locked for 1+ minute!!!!!! |
|
|
|
9051
|
Thu Aug 22 10:20:32 2013 |
kiwamu | Update | LSC | DRMI Locked for 1+ minute!!!!!! | Wonderful
! I like the video -- the spatial |
|
|
9050
|
Thu Aug 22 07:57:57 2013 |
Lisa | Update | LSC | DRMI Locked for 1+ minute!!!!!! | Very nice!! I was wondering, shouldn't
the driving matrix be such that MICH pushes |
|
|
9049
|
Thu Aug 22 02:40:12 2013 |
Jenne | Update | LSC | DRMI Locked for 1+ minute!!!!!! | [Jenne, Koji]
The DRMI |
|
|
9048
|
Wed Aug 21 23:50:40 2013 |
Koji | Update | SUS | PRM SUS_LSC violin (FM5) set to correct frequency | [Jenne Koji]
It seems that the PRM violin mode
freqs shifted from 625-ish to 640Hz. |
|
|
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 |
|
|
9046
|
Wed Aug 21 19:26:19 2013 |
rana | Update | IOO | Found the cause of mysterious MC motion |
|
|
|
9045
|
Wed Aug 21 17:42:03 2013 |
rana | Summary | General | /home/cds nearly full | One of the reasons that our disk is getting
full is due to the scripts_archive directory.
A backup script runs on op340m and makes |
|
|
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. |
|
|
9043
|
Tue Aug 20 18:42:57 2013 |
Jenne | Update | LSC | REFL investigations | I have done the swap in the REFL path.
First, I swapped the positions of REFL11
and REFL55. Then, I swapped out the |
|
|
9042
|
Tue Aug 20 16:23:41 2013 |
rana | Summary | General | /home/cds nearly full | /home/cds is >98% full - below are some
of the usage numbers:
|
|
|
9041
|
Tue Aug 20 11:52:20 2013 |
Jenne | Update | LSC | REFL investigations |
|
|
|
9040
|
Tue Aug 20 11:41:30 2013 |
Koji | Update | LSC | REFL investigations | As I always tell everyone: Don't use a 10% reflector
which produce ghost beams. Use a 90% reflector. |
|
|
9039
|
Tue Aug 20 10:59:15 2013 |
Steve | Update | Green Locking | Xend green layout corrections |
|
|
|
9038
|
Tue Aug 20 01:28:47 2013 |
Jenne | Update | LSC | REFL investigations | According to the wiki, REFL 11 has a transimpedance
of 4.08kV/A, and REFL 55 has a transimpedance
of 615V/A. This is a ratio of ~6.5 |
|
|
9037
|
Tue Aug 20 00:19:23 2013 |
rana | Update | LSC | PRMI / DRMI investigations | While Jenne was plotting, I locked and
aligned the MICH with AS55_Q. Then I aligned
the PRM and locked PRMI using REFL55_I/Q |
6x |
|
9036
|
Mon Aug 19 23:08:31 2013 |
Jenne | Update | LSC | DRMI sensing signals | Here are a bunch of sensing signals.
The configuration is always DRMI. Except
for the optic noted in the title and the |
11x |
|
9035
|
Mon Aug 19 19:08:35 2013 |
Koji | Update | Green Locking | Xend green layout corrections | - An Aluminum mirror instead of 2"
unknown mirror for the pick-off for the rejected
beam from the green faraday isolator (Steve) |
|
|
9034
|
Mon Aug 19 17:40:32 2013 |
Steve | Update | Green Locking | Xend green layout corrections | Shutter moved, no more clipping.
Pick-off mirror 2" replaced
by 1" one. Laseroptik HR 532nm, incident |
|
|
9033
|
Mon Aug 19 16:18:56 2013 |
manasa | Update | Green Locking | Xend green aligned | ASX scripts for PZT dither have been fixed
appropriately. Script resides in |
|
|
9032
|
Mon Aug 19 15:23:07 2013 |
Koji | Update | IOO | MC mirrors' ASC has non-zero inputs | [Jenne, Koji]
This disturbance in the MC ASC channels
were fixed. |
|
|
9031
|
Mon Aug 19 14:22:36 2013 |
rana | Update | Green Locking | Xend green aligned | |
|
|
9030
|
Mon Aug 19 11:30:20 2013 |
Jenne | Update | IOO | MC mirrors' ASC has non-zero inputs | [Masayuki, Jenne]
When I came in this morning, I noticed
that the Mode Cleaner had not been locked |
|
|
9029
|
Mon Aug 19 11:12:54 2013 |
Steve | Update | VAC | RGA scan at day 13 |
|
|
|
9028
|
Mon Aug 19 10:16:15 2013 |
Picasso | Metaphysics | Treasure | outsider art | |
|
|
9027
|
Mon Aug 19 10:03:17 2013 |
Steve | HowTo | General | how not to leave a cable | We can not leave cables connected like
this. This is a burned toast award. |
|
|
9026
|
Mon Aug 19 09:54:13 2013 |
Steve | Update | safety | Masayuki receives safety training | Masayuki Nakano, a student of Seiji's from
ICRR / U Tokyo, is visiting us here at the
40m lab for the next couple months. |
|
|
9025
|
Mon Aug 19 09:36:32 2013 |
Koji | Update | Green Locking | Xend green aligned | [Rana Koji]
This is an elog about the activity
on Friday night. |
|
|
9024
|
Mon Aug 19 07:53:48 2013 |
Steve | Update | SUS | ETMX damping restored | ETMX sus damping restored |
|
|
9023
|
Sun Aug 18 20:07:41 2013 |
rana | Update | Computer Scripts / Programs | userapps SVN up | JoeB and JamieR are working somewhat coherently
on a set of python libraries to fulfill all
of our command line CDS wants. This is being |
|