| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
12914
|
Tue Mar 28 21:06:53 2017 |
rana | Summary | CDS | /cvs/cds/caltech/chans back on svn1.6 | Debian doesn't like EPICS. Or our XY
plots of beam spots...Sad!
|
|
|
12913
|
Tue Mar 28 16:47:40 2017 |
Steve | Update | safety | Projector bulb is out again | Three replacement
bulbs ordered
Rana can discribe |
|
|
12912
|
Mon Mar 27 22:40:44 2017 |
Koji | Summary | IOO | MCL / MCF / Calibration | In http://nodus.ligo.caltech.edu:8080/40m/11793
I posted the calibrated PMC free-running
displcament with/without IMC locked. Unfortunately, |
|
|
12911
|
Mon Mar 27 20:41:21 2017 |
rana, gautam | Update | PSL | PMC DAQ assay for feed-forward integration | We are thinking to use the PMC signals
to help us in figuring out the feedback /
feedforward stuff and making it better. |
|
|
12910
|
Mon Mar 27 20:29:05 2017 |
rana | Summary | DetChar | Summary pages broken again | Going to the summary pages and looking
at 'Today' seems to break it and
crash the browser. Other tabs are OK, but |
|
|
12909
|
Mon Mar 27 16:01:55 2017 |
Steve | Update | PEM | X arm AC set to 68F |
The X arm air conditioner was not
regulating properly. The arm temp was warmer |
|
|
12908
|
Mon Mar 27 15:36:27 2017 |
Steve | Update | PEM | particle counter inside of PSL enclousure |
|
|
|
12907
|
Mon Mar 27 12:48:36 2017 |
rana | Summary | IOO | MCL / MCF / Calibration | What readouts do we have for the PMC length?
If we could have a calibrated &
whitened error and control signal |
|
|
12906
|
Fri Mar 24 19:04:18 2017 |
gautam | Update | IMC | Seismic feedforward and WFS | [valera, gautam]
On Wednesday at the meeting, we
were discussing why we aren't able to |
|
|
12905
|
Fri Mar 24 12:21:27 2017 |
gautam | Summary | IOO | MCL / MCF / Calibration | I repeated this measurement as follows:
Added a filter in the MC_F
filterbank (FM9) to account for the Pomona |
6x |
|
12904
|
Fri Mar 24 11:26:57 2017 |
gautam | Update | IMC | MC SUS damping gains restored | I've restored the damping loop gains
to their nominal values. Analysis of the
coherence between MCL and seismometer channels |
|
|
12903
|
Thu Mar 23 23:38:58 2017 |
gautam | Update | IMC | MC SUS damping gains stepped down | I've reduced the gains of the damping
on all 3 MC SUS by a factor of 3 for overnight
observation as part of the ongoing feedforward |
|
|
12902
|
Thu Mar 23 08:43:11 2017 |
rana | Update | IMC | WFS sensing matrix measurements | For sensing matrix, better to use single
frequency sine response. We don't want
to measure around the bounce or above the |
|
|
12901
|
Thu Mar 23 01:44:53 2017 |
gautam | Update | IMC | WFS sensing matrix measurements | Thanks to Koji's nice MATLAB script
using DttData functions, I was able to quickly
analyze the TF data. Essentially, this measurement |
|
|
12900
|
Wed Mar 22 16:58:25 2017 |
gautam | Update | IMC | WFS sensing matrix measurements | I've taken a bunch of transfer function
measurements from the MC ASC PIT and YAW
channels to the WFS error signals using the |
|
|
12899
|
Wed Mar 22 00:33:00 2017 |
gautam | Update | IMC | IMC length offset nulling | [valera, gautam]
Motivation: see this
elog |
|
|
12898
|
Tue Mar 21 21:59:48 2017 |
gautam | Update | IMC | IMC input beam mode matching | [valera, gautam]
We implemented the plan outlined
in the previous elog. The visibility (Pmax-Pmin)/(Pmax+Pmin) calculated |
|
|
12897
|
Tue Mar 21 21:21:58 2017 |
gautam | Update | IOO | WFS filter banks updated | The arrangement of filters in the WFS loop
filter banks have been altered, Rana will
update with details of the motivation behind |
|
|
12896
|
Tue Mar 21 15:13:44 2017 |
gautam | Update | IMC | IMC input beam mode matching | [valera, gautam]
Last night, Valera and I looked
into two aspects of the IMC: |
|
|
12895
|
Mon Mar 20 17:12:08 2017 |
steve | Update | PEM | particle counter inside of PSL enclousure | The logging script is multiplying by 100
instead of 10 !
|
|
|
12894
|
Mon Mar 20 14:39:44 2017 |
gautam | Update | CDS | No internet connectivity on control room machines | Koji
diagnosed that the NAT router was to blame |
|
|
12893
|
Mon Mar 20 11:18:58 2017 |
gautam | Update | CDS | No internet connectivity on control room machines | There
is no internet connectivity on any of the |
|
|
12892
|
Fri Mar 17 15:30:39 2017 |
Steve | Summary | SUS | oplev laser summary updated |
March 17,
2017 |
|
|
12891
|
Fri Mar 17 14:49:09 2017 |
gautam | Update | LSC | MCREFL condition pictures | I did a quick measurement of the beam size
on the MC REFL PD today morning. I disabled
the MC autolocker while this measurement |
|
|
12890
|
Fri Mar 17 10:47:16 2017 |
Steve | Update | Optical Levers | ETMX oplev laser replaced | JDSU 1103P. sn T8070866, made March 2007,
output power 2.7 mW, on pd 17,750 counts,
GV |
|
|
12889
|
Thu Mar 16 08:22:16 2017 |
Steve | Update | SUS | ETMX damping | Finally I see what kicks the sus damping
off
|
|
|
12888
|
Tue Mar 14 15:05:18 2017 |
Steve | Update | Optical Levers | history of ETMX oplev laser |
|
|
|
12887
|
Tue Mar 14 10:56:33 2017 |
gautam | Update | COC | RC folding mirrors - coating optimization | Rana suggested including some additional
terms to the cost function to penalize high
sensitivity to deviations in the layer thickness |
|
|
12886
|
Tue Mar 14 10:40:30 2017 |
Steve | Update | SUS | OSEM filters are in | We have 50 pieces in the clean cabinet. |
|
|
12885
|
Tue Mar 14 09:08:11 2017 |
Steve | Update | Optical Levers | ETMX HeNe is dead | ETMX oplev laser is dead. It will be replaced
this after noon. Sus damping recovered. |
|
|
12884
|
Mon Mar 13 16:47:41 2017 |
Steve | Update | PEM | Y-arm air conditon belts replaced | The east end AC unit is arching over and
running rough at CES. Called for mechanic.......
Both belts were replaced and the |
|
|
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.
|
|
|
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 |
|
|
12881
|
Fri Mar 10 18:00:22 2017 |
Steve | Update | General | attempted ETMY picture taking | Your technique works Koji |
|
|
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 |
|
|
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 |
|
|
12878
|
Thu Mar 9 20:38:19 2017 |
rana | Configuration | IOO | MC lock acquisition settings changed; no more HOM locks | The MC was sort of misaligned. It was locking
on some vertical HOMs. So I locked it and
aligned the suspensions to the input beam |
|
|
12877
|
Thu Mar 9 20:11:04 2017 |
Koji | Update | General | attempted ETMY picture taking | The attached is the ETMY image with the
single arm locked. This was the best I could
do. Here is the recipe |
|
|
12876
|
Thu Mar 9 17:26:43 2017 |
Steve | Update | General | attempted ETMY picture taking | I removed the video monitoring can and
replaced it with Olympus SP-570UZ camera.
It has no IR blocker. The OSEM light are |
|
|
12875
|
Thu Mar 9 15:25:12 2017 |
Koji | Update | General | IMC/XYarms aligned/locked | As per Steve's request, I've checked
the alignment of the IMC and the arms. These
three cavities are locked and aligned. |
|
|
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 |
|
|
12873
|
Wed Mar 8 15:28:37 2017 |
Steve | Update | Optical Levers | oplev laser RIN | Gautam and Steve,
|
|
|
12872
|
Tue Mar 7 15:17:19 2017 |
Steve | Bureaucracy | General | property tag | Property tag found. |
|
|
12871
|
Mon Mar 6 16:32:36 2017 |
Steve | Update | General | old NPRO | 16 years old Lightwave NPRO M126-1064-700,
sn 415 power output is tripping continously
to zero. |
|
|
12870
|
Mon Mar 6 14:47:49 2017 |
gautam | Update | Summary Pages | Code status check script modified | For a few days now, the "code status"
page
has been telling us that the summary pages |
|
|
12869
|
Mon Mar 6 12:34:30 2017 |
johannes | Summary | ASS | ASS light injection scenarios | What we want from the light source for
the AS port light injection:
Frequency control for locking |
|
|
12868
|
Mon Mar 6 09:12:59 2017 |
Steve | Update | safety | crane inspection 2017 | All 3 cranes inspected by professional
Fred Goodbar of Konecranes and load tested
with 450 lbs at max reach on Friday, March |
|
|
12867
|
Sun Mar 5 12:41:23 2017 |
gautam | Update | IMC | WFS servo-steppin | I've been sitting on some data for
a while now which I finally got around to
plotting. Here is a quick summary: |
|
|
12866
|
Fri Mar 3 17:24:21 2017 |
Steve | Update | Optical Levers | oplev laser RIN | Corrected oplev laser RIN plot at
day 3
RXA: |
|
|
12865
|
Thu Mar 2 20:32:18 2017 |
Lydia | Update | IMC | Front panel for 29.5 MHz amplifier box | [gautam, lydia]
I pulled out the box and found
the problem: the +24 V input to the amplifier |
|