| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
429
|
Sun Apr 20 18:23:27 2008 |
rana | Summary | LSC | locking attempts | I noticed that the adaptive FF for the MC
had stopped doing anything; this turned out
|
|
|
11513
|
Tue Aug 18 03:56:09 2015 |
ericq | Update | LSC | locking efforts | Now that the updated ALS is stable, and
the PRC angular FF is revived, I've been
working on relocking PRFPMI. While the RMS |
|
|
4623
|
Wed May 4 13:45:56 2011 |
kiwamu | Update | LSC | locking last night | Last night I was trying to calibrate the
MICH error signal and the actuators on BS
and ITMs. |
|
|
6471
|
Fri Mar 30 10:20:51 2012 |
kiwamu | Update | LSC | locking last night | I was trying to make the DRMI lock more
robust.
Increasing the gains of the oplev |
|
|
15045
|
Fri Nov 22 00:54:14 2019 |
gautam | Update | LSC | locking notes | [KA, GV]
There was no shaking (that disturbed
the locking) tonight! |
|
|
4753
|
Fri May 20 03:01:17 2011 |
kiwamu | Update | LSC | locking status | (PRMI locking)
Since REFL11 has gone I tried locking
the PRMI with combination of REFL55 and AS55. |
|
|
5040
|
Wed Jul 27 01:58:23 2011 |
kiwamu | Update | LSC | locking status | Through some locking exercise |
|
|
5041
|
Wed Jul 27 08:59:10 2011 |
Suresh | Update | LSC | locking status | I had to realign PSL beam into the
MC in order to reobtain the MC lock.
We lost lock at sometime around 8:30 AM on |
|
|
5043
|
Wed Jul 27 10:10:12 2011 |
steve | Update | PSL | locking status | 80 days: PMC is drifting |
|
|
5665
|
Fri Oct 14 04:35:45 2011 |
kiwamu | Update | LSC | locking tonight | The
lock of DRMI wasn't stable enough to measure
the sensing matrix. Failed. |
|
|
442
|
Thu Apr 24 14:10:26 2008 |
rob | Update | Locking | locking work | [I]Rob, Johnnie[/I]
We made some progress on locking last night |
|
|
3773
|
Sun Oct 24 19:55:50 2010 |
kiwamu | Update | Electronics | lonely RF amplifier on ITMX table | (Rana, Kiwamu)
|
|
|
12385
|
Tue Aug 9 13:53:57 2016 |
babbott | Update | SEI | long Guralp EX cable repaired on the D-sub side | I checked out the cable that I
took from you, and all of the connections |
|
|
685
|
Wed Jul 16 17:51:58 2008 |
Masha | Update | Auxiliary locking | long measurement | I'm taking a measurement on the SR785 spectrum
analyzer at low frequencies, so I'm going
to leave it by the symmetric port table for |
|
|
686
|
Wed Jul 16 22:29:05 2008 |
Masha | Update | Auxiliary locking | long measurement | [quote]I'm taking a measurement on the SR785
spectrum analyzer at low frequencies, so
I'm going to leave it by the symmetric port |
|
|
2312
|
Mon Nov 23 10:11:03 2009 |
steve | Update | PEM | long term temp fluctuation of the 40m lab |
|
|
|
4801
|
Thu Jun 9 18:25:22 2011 |
kiwamu | HowTo | CDS | look back a channel which doesn' exist any more | For
some purposes I looked back the data of some
channels which don't exist any more. |
|
|
8524
|
Thu May 2 19:59:34 2013 |
Jamie | Update | Computer Scripts / Programs | lookback: new program to look at recent past testpoint data | To aid in lock-loss studies, I made a new
program called 'lookback', similar to 'getdata',
to look at past data. |
|
|
4692
|
Wed May 11 17:20:24 2011 |
kiwamu | Configuration | IOO | loop diabled on PZT2 | [Valera / Kiwamu]
|
|
|
2105
|
Fri Oct 16 16:08:00 2009 |
rob | Configuration | ASC | loop opened on PZT2 YAW at 3:40 pm | I pushed the "closed loop" button
on PZT2 YAW around 3:40 pm today, then roughly
recentered it using the DC Offset knob on |
|
|
2107
|
Fri Oct 16 18:46:36 2009 |
rana | Configuration | ASC | loop opened on PZT2 YAW at 3:40 pm |
|
|
|
2109
|
Sun Oct 18 16:09:34 2009 |
rana | Configuration | ASC | loop opened on PZT2 YAW at 3:40 pm |
I wanted to see how long our IP POS
beam has been badly clipped - turns out its |
|
|
4752
|
Fri May 20 01:02:50 2011 |
loose connection hunter | Update | SUS | loose connection on ETMY rack | The
UL signal of the shadow sensor on ETMY went
to zero this evening. |
|
|
14290
|
Mon Nov 12 13:53:20 2018 |
rana | Update | IOO | loss measurement: oscope vs CDS DAQ | sstop using the ssscope, and just put the
ssssignal into the DAQ with sssssome whitening.
You'll get 16 bitsśšß. |
|
|
35
|
Wed Oct 31 08:34:35 2007 |
rana | Other | IOO | loss measurements | In the end, we were unable to get a good scatter
measurement just because we ran out of steam.
The idea was to get a frame
|
|
|
14243
|
Thu Oct 11 13:40:51 2018 |
yuki | Update | Computer Scripts / Programs | loss measurements |
Quote:
|
|
|
14245
|
Fri Oct 12 12:29:34 2018 |
yuki | Update | Computer Scripts / Programs | loss measurements | With Gautam's help, Y-arm was locked.
Then I ran the script "armloss_dcrefl_asdcpd_scope.py"
which gets the signals from oscilloscope. |
|
|
14248
|
Fri Oct 12 20:20:29 2018 |
yuki | Update | Computer Scripts / Programs | loss measurements | I ran the script for measuring arm-loss
and calculated rough Y-arm round trip loss
temporally. The result was 89.6ppm. (The |
|
|
14251
|
Sat Oct 13 20:11:10 2018 |
yuki | Update | Computer Scripts / Programs | loss measurements |
Quote:
|
|
|
14254
|
Mon Oct 15 10:32:13 2018 |
yuki | Update | Computer Scripts / Programs | loss measurements | I used these values for measuring armloss:
Transmissivitity of ITM
= 1.384e-2 * (1 +/- 1e-2)
Transmissivitity |
|
|
14258
|
Tue Oct 16 00:44:29 2018 |
yuki | Update | Computer Scripts / Programs | loss measurements | The scripts for measuring armloss are in
the directory "/opt/rtcds/caltech/c1/scripts/lossmap_scripts/armloss_scope".
armloss_derefl_asdcpd_scope.py: |
|
|
14269
|
Fri Nov 2 19:25:16 2018 |
gautam | Update | Computer Scripts / Programs | loss measurements | Some facts which should be considered when
doing this measurement and the associated
uncertainty: |
|
|
12874
|
Wed Mar 8 18:18:51 2017 |
johannes | Update | Computer Scripts / Programs | loss script | I started a loss script on Donatella that
will scan the beam spot across ETMY, recording
the reflected power from the arm via the |
|
|
12879
|
Thu Mar 9 22:28:11 2017 |
johannes | Update | Computer Scripts / Programs | loss script | loss map script running on Rossa that moves
the beam on ETMX. Yarm was misaligned for
this, most recent PIT and YAW settings were |
|
|
12880
|
Fri Mar 10 11:37:25 2017 |
gautam | Update | Computer Scripts / Programs | loss script | This was still running at ~9.30am today
morning, at which point I manually terminated
it after confirming with Johannes that it |
|
|
12882
|
Fri Mar 10 19:48:56 2017 |
johannes | Update | Computer Scripts / Programs | loss script | Loss script running again, on Pianosa this
time. Due to an oversight in the code the
beam wasn't actually moved across ETMY |
|
|
12883
|
Sat Mar 11 20:11:58 2017 |
johannes | Update | Computer Scripts / Programs | loss script | Yarm script running on Pianosa. Still working
on visualization of the ETMX lossmap.
|
|
|
13307
|
Mon Sep 11 12:56:40 2017 |
johannes | Update | Computer Scripts / Programs | lossmap attempts | I was trying to get a lossmap measurement
over the weekend but had some trouble first
with the IMC and then with the PMC. |
|
|
239
|
Tue Jan 15 13:15:27 2008 |
tobin | Update | Environment | lots of noise | They're throwing concrete around at the construction
site. |
|
|
8083
|
Thu Feb 14 08:29:41 2013 |
Steve | Update | IOO | low MC1 OSEM voltage | MC1 - LR, LL, UL & UR OSEMs
should be adjusted to get 1.2V |
|
|
8107
|
Tue Feb 19 09:37:23 2013 |
Steve | Update | IOO | low MC1 OSEM voltage |
See TT DB25 pin swapping
elog#7869 |
|
|
9473
|
Sat Dec 14 13:46:54 2013 |
Den | Update | IOO | low bandwidth MCL loop | Last time we designed MCL loop with UGF
~ 30 Hz and I think, it was hard to lock
the arm because of large frequency noise |
|
|
962
|
Thu Sep 18 09:30:12 2008 |
steve | Update | General | low noise metal film resistors are in | Low noise metal film resistor and capacitor
kits from www.garrettelec.com are in.
|
|
|
10112
|
Mon Jun 30 10:06:39 2014 |
Steve | Update | VAC | low on pneumatic pressure of vacuum valves | This morning valve condition: V1, VM1,
V4 and V5 valves were closed. IFO pressure
rose to 1.3 mTorr |
|
|
9580
|
Tue Jan 28 09:51:47 2014 |
Steve | Update | IOO | low power pointing |
PSL output is stable. |
|
|
6750
|
Mon Jun 4 23:48:43 2012 |
jenne | Update | Green Locking | lowered gain | We're trying to do a yarm measurement....before
I forget, I want to write this down...
I changed the gain of each of the |
|
|
2877
|
Tue May 4 13:14:43 2010 |
josephb | Update | CDS | lsc.mdl and ifo.mdl to build (with caveats) | I got around to actually try building the
LSC and IFO models on megatron. Turns
out "ifo" can't be used as a model |
|
|
2885
|
Thu May 6 11:34:35 2010 |
rob | Update | CDS | lsc.mdl and ifo.mdl to build (with caveats) |
|
|
|
6332
|
Tue Feb 28 16:12:59 2012 |
Den | Update | Adaptive Filtering | lunch talk | Just to be clear what I said at the
meeting, I write all this down here. Adaptive
filtering of real signals (MC_F and GUR1_X) |
|
|
5008
|
Wed Jul 20 22:16:27 2011 |
Ishwita, Manuel | Update | Electronics | lying seismometer cable and plugging it | We laid the cable along the cable keeper
from the BACARDI seismometer to the rack
1X6, the excess cable has been coiled under |
|