| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
5841
|
Tue Nov 8 17:48:21 2011 |
Mirko | Update | CDS | Dolphin weirdness | Had since yesterday evening some trouble
with getting a channel from rfm on c1sus
to oaf on c1lsc via dolphin. Several restarts |
|
|
5842
|
Tue Nov 8 18:06:43 2011 |
Mirko | Update | Adaptive Filtering | Noise injections to MC1-3 PIT & YAW | With fancy analysis tools approaching usability
I looked some more into noise projections
from PIT,YAW motion of the MC mirrors to |
7x |
|
5843
|
Tue Nov 8 19:08:21 2011 |
Mirko | HowTo | Computers | New DV | [quote]To use the new ligoDV (previously GEO
DV) to look at 40m data, open up a matlab,
set up for mDV as usual,
|
|
|
5844
|
Wed Nov 9 07:57:39 2011 |
steve | Update | SUS | ETMX oplev is down and sus damping restored | The ETMX oplev returning beam is well centered
on the qpd. We lost this signal 2 days ago.
I will check on the qpd. |
|
|
5845
|
Wed Nov 9 10:35:30 2011 |
jamie | Update | SUS | ETMX oplev is down and sus damping restored |
|
|
|
5846
|
Wed Nov 9 12:05:08 2011 |
Katrin | Update | Green Locking | YARM error signal and feedback signal | error signal = signal measured behind the
low-pass filter
feedback signal = output of the gain |
|
|
5847
|
Wed Nov 9 13:44:04 2011 |
Mirko | Update | Computers | NDS1 missing channels in matlab | The Matlab NDS1 access seems to only work
for some channels. With other channels it
just hangs 'Busy' and does nothing. |
|
|
5848
|
Wed Nov 9 14:23:35 2011 |
Jenne | Update | Adaptive Filtering | OAF MC Delay Measurement | As described in elog
2063 and the mevans
document, we need to measure the TF of |
|
|
5849
|
Wed Nov 9 14:49:07 2011 |
kiwamu | Summary | LSC | Characterization of the Power Recycled Michelson | EDIT
by KI: |
|
|
5850
|
Wed Nov 9 16:03:21 2011 |
kiwamu | Summary | General | Goal this week | Goal of this week :
ALS on the Y arm |
|
|
5851
|
Wed Nov 9 16:29:36 2011 |
Koji | Summary | LSC | Characterization of the Power Recycled Michelson | Difficult to understand.
The mode matching does not change
the recycling gain. It changes the coupling |
|
|
5852
|
Wed Nov 9 16:49:17 2011 |
kiwamu | Update | Green Locking | Y end laser temperature with slow input connected | Indeed it is strange. I took a quick look
at it.
In |
|
|
5853
|
Wed Nov 9 17:41:17 2011 |
Jenne | Update | Computers | ETMX restored | Jamie did computer magic. I burt
restored scxepics, and restored ETMX damping. |
|
|
5854
|
Wed Nov 9 18:02:42 2011 |
jamie | Update | CDS | ISCEX front-end working again (for the moment...) | The c1iscex IO chassis seems to be working
again, and the iscex front-end is running
again. |
|
|
5855
|
Wed Nov 9 19:08:18 2011 |
Suresh | Update | elog | restarted elog | Elog was not responding and was restarted. |
|
|
5856
|
Wed Nov 9 20:35:58 2011 |
Mirko | Update | Adaptive Filtering | Seismic noise injection into the MC | Very elaborated measurement ;-)
On 11-11-08:
18:40 Stomp near STS1 for 2mins |
8x |
|
5857
|
Wed Nov 9 21:21:30 2011 |
Suresh | Update | IOO | MC WFS: Output matrix determined with loops closed. | With the loops closed I ran the $SCRIPTS/MC/WFS/senseWFSoutMATRX
script and analysed the lockin outputs with |
|
|
5858
|
Wed Nov 9 21:32:38 2011 |
Mirko | Update | Adaptive Filtering | Put accelerometers 4-6 on top of MC2 tank | Put the accelerometers on top of MC2. Orientated
as the arms,GUR1 and STS1:
|
|
|
5859
|
Wed Nov 9 21:48:43 2011 |
Suresh | Update | IOO | WFS Servo included into the MC_Autolocker | The WFS
servo loop will come on 5 seconds after the
MC is locked. |
|
|
5860
|
Thu Nov 10 05:54:23 2011 |
kiwamu | Update | Green Locking | Beat-note detected : PSL vs Y arm | [Katrin / Kiwamu]
The beat-note |
|
|
5861
|
Thu Nov 10 11:52:00 2011 |
Jenne | Update | CDS | RFM signal transferring | I am not so happy with the control signals
that are coming into the OAF via the RFM/Dolphin/shmem.
The MCL/MCF signal travels via RFM |
|
|
5862
|
Thu Nov 10 12:28:31 2011 |
Jenne | Update | SUS | MC2 is being a little wild...WFS to blame | Mirko and Den are measuring MC_F,
which they will report about later, but I
noticed that MC2 is totally crazy right now. |
|
|
5863
|
Thu Nov 10 16:26:46 2011 |
Mirko | Update | Computers | Firefox kills elog | Had to restart the elog many times. For
some reason firefox 8 on Win 7 kills the
elog pretty consistently when trying to make |
|
|
5864
|
Thu Nov 10 16:44:54 2011 |
Mirko | Update | Adaptive Filtering | Looking into MC_F & PSL misalignment | [Den, Mirko]
While doing the things below we accidentally
misaligned the PSL laser. Thanks to Suresh |
|
|
5865
|
Thu Nov 10 19:41:24 2011 |
Jenne | Update | SUS | Musings on SUS dewhitening, and MC ELP28's | The
following will be a stream-of-consciousness,
approximately chronological story of my last |
|
|
5866
|
Thu Nov 10 20:20:57 2011 |
Suresh | Update | IOO | MC Spot positions have shifted after accelerometer installation on MC2 chamber | [ Jenne, Suresh ]
We were tying the fix the WFS and
noticed that the PSL --> MC alignment |
|
|
5867
|
Thu Nov 10 22:00:38 2011 |
Mirko | Update | Adaptive Filtering | Looking into MC_F & PSL misalignment |
|
6x |
|
5868
|
Fri Nov 11 00:18:53 2011 |
Zach | Update | Electronics | Precision temperature controller | I have made |
|
|
5869
|
Fri Nov 11 00:55:53 2011 |
Den | Update | Adaptive Filtering | MC_F | [Mirko, Den]
Not satisfactory work of adaptive
filtering make us to think about the signals |
|
|
5870
|
Fri Nov 11 00:58:19 2011 |
Den | Update | elog | restarted elog | Elog suspended 2 times for 1 hour. Too
high frequency.
Restarted. |
|
|
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 |
|
|
5872
|
Fri Nov 11 12:32:45 2011 |
Katrin | Update | Green Locking | beat PSL - YARM laser | [Suresh, Katrin]
Measured frequency fluctuation of
the beat between PSL and YARM lasers. |
|
|
5873
|
Fri Nov 11 13:26:24 2011 |
jamie | Update | SUS | Musings on SUS dewhitening, and MC ELP28's |
|
|
|
5874
|
Fri Nov 11 13:35:19 2011 |
Katrin | Update | Green Locking | Feedback to ETMY | [Kiwamu, Katrin]
|
|
|
5875
|
Fri Nov 11 14:55:47 2011 |
kiwamu | Summary | LSC | Characterization of the Power Recycled Michelson : take 2 |
|
|
|
5877
|
Fri Nov 11 21:09:30 2011 |
Suresh | Update | SUS | MC2 is being a little wild...WFS to blame |
|
|
|
5878
|
Fri Nov 11 22:07:43 2011 |
Suresh | Update | IOO | Tried to recover the MC alignment of 4th Nov: partial success, PSL beam clipping | I have recovered the yaw values pretty
much . As the PZT1 rails in this direction
perhaps this is the more relevant of the |
|
|
5879
|
Sat Nov 12 02:00:36 2011 |
Mirko | Update | Adaptive Filtering | MC-F and other signals | Regarding http://nodus.ligo.caltech.edu:8080/40m/5867
and http://nodus.ligo.caltech.edu:8080/40m/5869
: |
|
|
5880
|
Sat Nov 12 02:27:00 2011 |
Suresh | Update | Computers | C1IOO front end suddenly froze. Was restarted remotely | [Koji Suresh]
No one was messing with the c1ioo
or any other machine. The medm |
|
|
5881
|
Sat Nov 12 02:44:18 2011 |
Suresh | Update | Computers | C1IOO front end suddenly froze. Was restarted remotely |
|
|
|
5882
|
Sat Nov 12 02:46:13 2011 |
Den | Update | Adaptive Filtering | stacks and ground | We measured the coherence between the seismometer
near the MC2 stack and accelerometers on
the vacuum tank where MC2 is. Because accelerometers |
|
|
5883
|
Sat Nov 12 03:46:55 2011 |
Suresh | Update | IOO | MC WFS Servo: Open loop gain | [Mirko, Suresh]
I closed the WFS loops and measured
the transfer function from IN2 to IN1 testpoints |
|
|
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 |
|
|
5885
|
Mon Nov 14 11:32:02 2011 |
kiwamu | Summary | General | Goal this week | Goal of this week : Noise
budgeting on the Y arm ALS |
|
|
5886
|
Mon Nov 14 12:16:41 2011 |
Jenne | Update | Computers | OAF model died for unknown reason | I am meditating on the OAF, and had it
running and calculating things. I had
the outputs disabled so I could take reference |
|
|
5887
|
Mon Nov 14 15:46:14 2011 |
steve | Update | VAC | TP2's forepump changed | The foreline pressure of TP2 was 1.4 Torr
this morning. This drypump worked well for
ten months. |
|
|
5888
|
Mon Nov 14 17:01:14 2011 |
kiwamu | Update | Green Locking | ALS feedback on MC2 | Leaving a note on the ALS feedback before
I forget:
The |
|
|
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: |
|
|
5890
|
Mon Nov 14 22:56:31 2011 |
kiwamu | Update | Green Locking | Y end PDH lock : UGF at 17 kHz | [Tomotada / Kiwamu]
The open loop transfer function of the Y |
|
|
5891
|
Tue Nov 15 00:00:15 2011 |
Suresh | Update | IOO | MC was realigned to remove beam clipping and to accommodate PZT1 range | [Kiwamu, Suresh]
The MC was realigned to readjust
the input beam direction in pitch such that |
|