ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
5352
|
Wed Sep 7 00:39:34 2011 |
rana | Update | SUS | ITMX adjustments | (What we did)
* Moved SUS to edge of table for
OSEM adjustment. |
|
5364
|
Wed Sep 7 22:17:04 2011 |
rana | Update | IOO | RF Amp for EOM on PSL Table | After Steve pointed out the 'deep hoop' |
|
5372
|
Fri Sep 9 19:15:17 2011 |
rana | Update | IOO | RF Amp for EOM on PSL Table |
|
|
5376
|
Sat Sep 10 11:07:37 2011 |
rana | HowTo | SUS | Optical Lever Servo Tuning thoughts | Now that we are in a moderately |
|
5379
|
Sat Sep 10 18:52:45 2011 |
rana | Update | Computers | conlog getting filled up | One of the reasons that conlog seems so
slow lately is that its been writing 100's
of MB of .log files every day since early |
|
5381
|
Sat Sep 10 19:03:57 2011 |
rana | Update | LSC | Y Arm work | I lined up the Y Arm for locking and then
centered the oplevs for ETMY and ITMY.
* The ITMY OL has still got the old |
|
5383
|
Sat Sep 10 20:30:01 2011 |
rana | Update | IOO | MC trans re-aligned / MC2 shifted mysteriously / MC2 re-aligned | |
|
5404
|
Wed Sep 14 12:01:05 2011 |
rana | Update | Adaptive Filtering | Modifications to LSC, RFM models, added OAF model | For the acquisition of the MC_F channel,
I suggest taking the FAST_MON BNC output
from the blue FSS interface card in the Eurocard |
|
5409
|
Wed Sep 14 20:30:36 2011 |
rana | Update | SUS | Some screens are still bad | I've found that a few of the screens still
have Whited-Out fields due to naming changes
(OL SUM and ALS-> TM OFFSET). I attach |
|
5411
|
Wed Sep 14 22:07:41 2011 |
rana | Update | SUS | ITM Oplevs are broken | I went to see what was wrong with the ITMs
and found that people have been working on
them and have left them in a broken state |
|
5448
|
Sun Sep 18 14:08:52 2011 |
rana | Update | SUS | Calibration plan for the oplevs | We don't need a high quality calibration
for the optical levers. ~50% accuracy is
fine. |
|
5466
|
Mon Sep 19 17:45:39 2011 |
rana | Update | SUS | Some screens fixed |
|
|
5467
|
Mon Sep 19 18:05:27 2011 |
rana | Update | SUS | Summary screen |
|
|
5493
|
Wed Sep 21 00:34:29 2011 |
rana | Update | SUS | SUS diag stuff... just so I remember what I'm doing | ETMX was ringing up when it was mis-aligned
for Y arm locking. I restored the input matrix
to something more diagonal and its now damping |
|
5494
|
Wed Sep 21 00:37:01 2011 |
rana | Update | SUS | ITMY and SRM oplev calibrations - measured and estimated | I found that some of the Optical Lever
Servos were ON today and injecting nonsense
into the interferometer optics. I have set |
|
5500
|
Wed Sep 21 16:22:14 2011 |
rana | Update | SUS | Summary screen | The SUS SUMMARY screen is now fully |
|
5503
|
Wed Sep 21 17:42:35 2011 |
rana | Update | IOO | AM modulation misery | I'd like to see some |
|
5506
|
Wed Sep 21 21:13:35 2011 |
rana | Update | IOO | AM modulation misery | How about changing the x-axis of all these
plots into meters or picometers and tell
us how wide the PRC resonance is? (something |
|
5536
|
Sat Sep 24 01:51:02 2011 |
rana | Update | SUS | Oplev filter optimization for 2 poles and 2 zeros |
|
|
5596
|
Sun Oct 2 13:45:13 2011 |
rana | Summary | General | Recovery from the power shutdown: apache / svn | Restarted Apache on nodus using Yoichi's
wiki instructions. SVN is back up. |
|
5641
|
Mon Oct 10 10:14:43 2011 |
rana | Update | LSC | length fluctuations in SRCL | How does it make sense that the motion
at 0.1 Hz of PRC is 10x larger than MICH?
|
|
5649
|
Tue Oct 11 15:14:50 2011 |
rana | Update | LSC | BS actuator reponse at low frequency : measured |
|
|
5650
|
Tue Oct 11 15:19:17 2011 |
rana | HowTo | Environment | 40m map | The Kinemetrics dudes are |
 |
5662
|
Thu Oct 13 21:40:59 2011 |
rana | Summary | VAC | Recovery from the power shutdown is completed | As it turns out Steve is not crazy
in this particular instance: the vacuum computer,
linux3 , has some issues. I can login just |
|
5669
|
Sat Oct 15 10:58:32 2011 |
rana | Update | IOO | MC WFS Output Matrix determination | In order to save time and sanity, you
should not measure the pitch ->yaw and
yaw-> pitch. It makes things too complicated |
|
5673
|
Sun Oct 16 02:30:00 2011 |
rana | Update | Electronics | Testing REFL165 | Unless the bias feedback circuit has been
tuned for the 1 mm diode, its possible that
you are seeing some C(V) effects. Its easy |
|
5674
|
Sun Oct 16 05:35:18 2011 |
rana | Update | Computer Scripts / Programs | Failing to set SUS summary screen values |
|
|
5682
|
Mon Oct 17 23:28:32 2011 |
rana | Update | Electronics | StochMon | To get to the bottom of the RFAM mystery,
we've got to resurrect the StochMon to trend
the RFAM after the IMC. |
|
5688
|
Tue Oct 18 21:19:18 2011 |
rana | Configuration | IOO | WFS disabled in SUS | I found that the MC WFS had large offset
control signals going to the MC SUS. Even
though the input switch was off, the integrators |
|
5748
|
Fri Oct 28 00:53:39 2011 |
rana | Update | Electronics | POP 22/110 Design | The attached PDF shows a possible gain
/ input noise config for the POP 22/110 that
we would use to detect the RF power in the |
|
5764
|
Sun Oct 30 14:08:35 2011 |
rana | Update | Electronics | RFAM monitor in place. ( Uncalibrated ) EPICS troubles |
|
|
5814
|
Fri Nov 4 19:30:06 2011 |
rana | Update | SUS | Dr. SUS paths updated--question of human oversight remains | My inclination is to not do the writing
of the matrices automatically nor to do the
weekly kicks. Its nice to have long locks |
|
5825
|
Sun Nov 6 21:09:03 2011 |
rana | Update | Adaptive Filtering | coherence |
|
|
5871
|
Fri Nov 11 10:30:27 2011 |
rana | Update | Adaptive Filtering | MC_F |
There should be a whitening
filter in the Pentek Generic DAQ board (Eurocard |
|
5884
|
Sat Nov 12 08:09:47 2011 |
rana | Update | IOO | MC WFS Servo: Open loop gain | Somehow, I generically don't like the idea
of lead filters for the WFS loops. We don't
really need so much bandwidth. I think you |
|
5889
|
Mon Nov 14 21:22:48 2011 |
rana | Configuration | Computers | primetime RSYNC slowing down NODUS | nodus:elog>w; who ; date
9:20pm up 44 day(s),
5:14, 5 users, load average: |
|
5944
|
Fri Nov 18 11:16:08 2011 |
rana | Update | IOO | eom box |
|
|
5945
|
Fri Nov 18 11:28:39 2011 |
rana | Update | Green Locking | Y end green PDH servo : it's okay |
|
|
5953
|
Fri Nov 18 23:44:33 2011 |
rana | Update | IOO | Mode cleaner noise projection | Could use some more detail on how this
measurement was done. It looks like you used
the SUSPOS signal with the mirror moving, |
|
5959
|
Sat Nov 19 10:41:30 2011 |
rana | Update | IOO | MC_WFS Servo: The MC2_TRANS_PIT and YAW loops switched ON | I'm quite sure that this is not good: since
MC2 can
produce a signal in WFS1 and WFS2, it cannot |
|
5965
|
Sun Nov 20 15:33:37 2011 |
rana | Update | General | recovery from the power shutdown | restarted Apache on Nodus for the
SVN as per wiki instructions |
|
6006
|
Fri Nov 25 17:52:28 2011 |
rana | Update | IOO | F2A filter for MC | Woo. Pretty crazy. The numerators should
only be ~10% larger than the denominator
below 1 Hz. Let's try again. |
|
6010
|
Fri Nov 25 20:41:48 2011 |
rana | Update | SUS | MC watchdogs | It seems as if someone was looking into
this on Wednesday, but as there's no elog,
I think probably not. |
|
6017
|
Sat Nov 26 10:55:40 2011 |
rana | Update | CDS | Beware of fancy filter modules |
Could be that what we're seeing
is the noise floor of the Direct Form II |
|
6021
|
Mon Nov 28 10:54:40 2011 |
rana | Update | SUS | F2A filter for MC | Our
approach to making the F2A or F2P filters |
|
6031
|
Mon Nov 28 22:09:24 2011 |
rana | Update | CDS | Beware of fancy filter modules | To see what might be causing the problem,
I used a version of the filter noise test
matlab code that Matt had in the elog. |
|
6062
|
Fri Dec 2 17:43:46 2011 |
rana | Update | digital noise | Foton error | It would be useful to see some plots so
we could figure out exactly what magnitude
and phase error correspond to "gross" |
|
6084
|
Thu Dec 8 00:04:50 2011 |
rana | Update | IOO | RAM Mon is now being demodulated | Monitoring good, but remember that the
EOM alignment must be done carefully to minimize
the RAM before we can use these trends. |
|
6085
|
Thu Dec 8 00:18:38 2011 |
rana | Summary | Computer Scripts / Programs | BURT restore problems / issues in snapshot scripts | I tried to run the seismic StripTool tonight,
which seems liek a simple task. But instead
I fell through the rabbit hole again... |
|
6114
|
Tue Dec 13 18:56:23 2011 |
rana | Update | IOO | PSL beam realigned into MC |
Of course, looking at the MC
transmission os the important thing, but |
|