ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
6796
|
Tue Jun 12 00:15:51 2012 |
Jenne | Update | Computers | rtcds: command not found | We can't compile any changes to the LSC
or the GCV models since Jamie's new script
/ program isn't found. I don't know |
|
6797
|
Tue Jun 12 01:03:18 2012 |
Jenne | Update | Computers | mini boot fest | As usual, we noticed the frame builder
wasn't connecting happily with the rest of
the computers just as we were about to lock |
|
6798
|
Tue Jun 12 01:58:33 2012 |
yuta | Update | Green Locking | aligned Y arm to Y end green | [Jenne, Yuta]
We aligned Y arm to the Y end green |
|
6799
|
Tue Jun 12 02:07:42 2012 |
Jenne | Update | SUS | PRM oplevs left off | Yuta claims he fixed the PRM oplev by centering
it the other day, but no one has left it
on and watched it for a long while, to make |
|
6800
|
Tue Jun 12 02:09:43 2012 |
Jenne | Update | Computers | mini boot fest |
|
|
6801
|
Tue Jun 12 11:25:05 2012 |
Jamie | Update | Computers | rtcds: command not found |
|
|
6802
|
Tue Jun 12 11:54:50 2012 |
Jenne | Update | Green Locking | c1gcv recompiled | Yuta added channels so we can get the Q
phase of all the beat PDs to the c1gcv model.
I showed him how to recompile/install/start. |
|
6803
|
Tue Jun 12 13:49:32 2012 |
Jamie | Configuration | Computer Scripts / Programs | tconvert | A nicer, better maintained version of tconvert
is now supplied by the lalapps package.
It's called lalapps_tconvert. |
|
6804
|
Tue Jun 12 16:33:32 2012 |
steve | Update | SUS | PRM oplevs servo ON for confirmation |
|
|
6805
|
Tue Jun 12 17:04:55 2012 |
steve | Update | SUS | PRM oplevs servo is still bad |
|
|
6806
|
Tue Jun 12 17:29:28 2012 |
Den | Update | CDS | dq channels | All PEM and IOO DQ channels disappeared.
These channels were commented in C1???.ini
files though I've uncommented them a few |
|
6807
|
Tue Jun 12 17:46:09 2012 |
Jenne | Update | Computers | rtcds: command found |
|
|
6808
|
Tue Jun 12 20:35:46 2012 |
yuta | Update | Green Locking | c1gcv recompiled | [Jamie, Yuta]
We recompiled c1gcv because the order |
|
6809
|
Tue Jun 12 23:18:18 2012 |
yuta | Update | Green Locking | I-Q signals for the beat | [Mengyao, Yuta]
|
  |
6810
|
Wed Jun 13 02:11:59 2012 |
yuta | Update | Green Locking | my first modescan (sort of) | I stabilized Y arm length by using only
I phase coarse signal from the beat(C1:ALS-BEATY_COARSE_I_ERR).
I sweeped the arm length by injecting |
|
6811
|
Wed Jun 13 02:24:02 2012 |
rana | Update | Green Locking | my first modescan (sort of) | That sounds goofy.
With the delay line technique,
you can get a linear signal over 50 MHz with |
|
6812
|
Wed Jun 13 03:03:38 2012 |
yuta | Update | Green Locking | my first modescan (sort of) | Linear range df of the delay line technique
is about df ~ c/(2D). So, the linear range
for the fine signal(delay line length D=30m) |
|
6813
|
Wed Jun 13 11:10:56 2012 |
rana | Update | Green Locking | my first modescan (sort of) | You can easily calculate whether or not
the coarse readout will work by thinking
about the scan resolution you need given |
|
6814
|
Wed Jun 13 11:19:05 2012 |
steve | Update | SUS | IDC receptacles clamped | The MC_ IDC 64 pin cables from sat. amplifiers
to junction-interface-board towards
whitening - dewhitening at the back of rack |
|
6815
|
Wed Jun 13 17:39:13 2012 |
yuta | Update | Green Locking | calibrating the beatbox | [Jenne, Yuta]
We put 0 dBm sine wave to the RF input |
   |
6816
|
Thu Jun 14 01:36:34 2012 |
yuta | Update | Green Locking | can't scan Y arm for 1FSR | [Jenne, Koji, Yuta]
We tried to scan of the Y arm but |
|
6817
|
Thu Jun 14 04:53:39 2012 |
yuta | Summary | Green Locking | designing ALS loop for mode scan | [[Requirement]]
Arm cavity FWHM for IR is
|
  |
6818
|
Thu Jun 14 21:37:37 2012 |
yuta | Update | Green Locking | succeeded in 1FSR mode scan | [Jenne, Yuta]
We couldn't scan the Y arm for 1FSR |
|
6819
|
Fri Jun 15 00:50:54 2012 |
yuta | Update | Green Locking | scanned Y arm for 5FSR | I scanned Y arm for 5FSR (below).
I could done this after I put a whitening
filter. |
|
6820
|
Fri Jun 15 01:53:05 2012 |
Koji | Update | Green Locking | scanned Y arm for 5FSR | Interesting.
It seems for me that there is a dependence
of the noisiness as the beat frequency is |
|
6821
|
Fri Jun 15 13:33:39 2012 |
yuta | Update | Green Locking | ADC noise contribution to ALS | ADC noise is not a limiting noise source
in a current ALS setup.
|
|
6822
|
Sat Jun 16 01:03:21 2012 |
yuta | Update | Green Locking | used longer delay line for mode scan | [Mengyao, Yuta]
Last night, I used 1.5 m delay line |
|
6823
|
Sat Jun 16 12:03:41 2012 |
Zach | Update | Green Locking | scanned Y arm for 5FSR | Is that time stamp really correct?
I wanted to look at the signal closely to
see if I could get any feeling for why it |
|
6824
|
Sat Jun 16 13:01:17 2012 |
yuta | Update | Green Locking | scanned Y arm for 5FSR |
|
|
6825
|
Sat Jun 16 18:17:00 2012 |
yuta | Update | Green Locking | Y arm length using 5FSR scan | Calibrating error signal to beat
frequency;
I injected 0 dBm RF sine wave |
 |
6826
|
Sat Jun 16 18:51:44 2012 |
Koji | Update | Green Locking | Y arm length using 5FSR scan |
|
|
6827
|
Sat Jun 16 19:32:11 2012 |
yuta | Update | Green Locking | Y arm length using 5FSR scan | I know!
But I think there's some error (~
10% ?) in calibrating the beatbox. In elog |
|
6828
|
Mon Jun 18 02:31:43 2012 |
yuta | Summary | Green Locking | analysis of mode scan data | I analyzed mode scan data from last week.
Mode matching ratio for Y arm is 86.7 |
   |
6829
|
Mon Jun 18 16:23:59 2012 |
Jenne | Update | Locking | LSC trigger update | The LSC triggers for the individual filter
modules in a filter bank now works.
This is handy so that boosts can come on |
|
6830
|
Mon Jun 18 17:28:03 2012 |
yuta | Summary | Computers | bugs in CDS_PARTS/simLinkParts/Fcn | Fcn module in CDS_PARTS is used to include
a user defined function in a model.
We should be able to use this by entering |
 |
6831
|
Mon Jun 18 23:38:39 2012 |
Jenne | Update | LSC | Added LSC channels to frames | Since the .ini files get overwritten every
time a model is compiled now, we need to
put all channels we want saved to frames |
|
6832
|
Mon Jun 18 23:54:31 2012 |
yuta | Update | Green Locking | phase tracker for ALS | [Koji, Jenne, Yuta]
Summary: |
  |
6833
|
Tue Jun 19 20:26:50 2012 |
Jenne | HowTo | Locking | Summer Plan | Jenne and Yuta's
Summer Plan |
|
6834
|
Tue Jun 19 23:36:19 2012 |
yuta | Update | LSC | calibrated POY error signal | [Jenne, Yuta]
We calibrated POY error signal(C1:LSC-POY11_I_ERR). |
  |
6835
|
Wed Jun 20 00:01:04 2012 |
Jenne | Update | LSC | calibrated POY error signal | [Yuta, Jenne]
We have measured the out of loop
residual motion of the Yarm while locked |
 |
6836
|
Wed Jun 20 00:02:16 2012 |
yuta | Update | Green Locking | slower scan using phase tracking ALS | For those of you who want to see plots
from slower scan.
|
|
6837
|
Wed Jun 20 01:02:20 2012 |
Jamie | Update | Green Locking | RF amp removed from X arm ALS setup | I very badly forgot to log about this in
the crush of surfs.
I removed Koji's proto-beatbox RF |
|
6838
|
Wed Jun 20 16:37:11 2012 |
yuta | Update | Locking | ETMX 1064 trans camera | [Jenne, Yuta]
We made ETMXT camera working. |
|
6839
|
Wed Jun 20 18:00:10 2012 |
rana | Summary | PSL | summaries | Nice PSL summaries from LHO:
https://alog.ligo-wa.caltech.edu/aLOG/index.php?callRep=3187 |
|
6840
|
Wed Jun 20 18:09:23 2012 |
yuta | Update | Locking | both arms aligned, ITMX oplev centered | [Jenne, Yuta]
We aligned FPMI. I also centered ITMX |
|
6841
|
Wed Jun 20 18:43:57 2012 |
yuta | Update | LSC | calibrated POX error signal | [Jenne, Yuta]
We did the same calibration for POX. |
  |
6842
|
Thu Jun 21 01:58:29 2012 |
Jenne | Update | Green Locking | Xgreen preparations | [Yuta, Koji, Jenne]
Lots
of small things happened tonight, in preparation |
|
6843
|
Thu Jun 21 02:57:16 2012 |
Jenne | Bureaucracy | General | 40m Action Items | PRIORITY
ITEMS:
|
|
6844
|
Thu Jun 21 09:01:18 2012 |
steve | Update | STACIS | the resurrection of STACIS -surf | There is a small wood cabinet under the
south end flow bench, labeled STACIS.
Unit is complete with extension cards |
|
6845
|
Thu Jun 21 09:10:08 2012 |
steve | Update | PEM | flow bench must be running all times | The south end flow bench HEPA filter should
be run all times. You can turn it off for
a measurement or two but remember we are |
|