| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
6458
|
Tue Mar 27 21:37:51 2012 |
keiko | Configuration | IOO | Beam Profile measurement: IPPOS beam | From the mode measurement I and Suresh
have done yesterday, I calculated what beam
size we expect at ETM ((1) upper Fig.1) and |
9x |
|
6441
|
Fri Mar 23 05:10:46 2012 |
Suresh | Update | IOO | Beam Profile measurements: Errors too large to yield good fits. | [Kiwamu, Suresh]
Today we attempted to
measure the beam profile of the REFL beam |
|
|
15529
|
Mon Aug 17 15:18:26 2020 |
gautam | Update | Equipment loan | Beam Profiler + peripherals --> 40m | Gabriele left the DataRay beam profiler
+ peripherals (see Attachment |
|
|
13002
|
Mon May 22 10:53:02 2017 |
Dhruva | Update | Optical Levers | Beam Profiling Results |
|
6x |
|
13006
|
Tue May 23 10:27:24 2017 |
Dhruva | Update | Optical Levers | Beam Profiling Results | I have attempted to calculate the
instrument error (micrometer least count)
using the values of the spot size obtained |
6x |
|
13007
|
Tue May 23 15:22:04 2017 |
rana | Update | Optical Levers | Beam Profiling Results |
Include several sources of error.
Micrometer error is one, but you should be
able to think of at least 3 more.
There |
|
|
13008
|
Tue May 23 16:33:00 2017 |
Steve | Update | Optical Levers | Beam Profiling Results | You may compare your results with this.
RXA: please no, that's not
the right way |
|
|
13021
|
Tue May 30 18:31:54 2017 |
Dhruva | Update | Optical Levers | Beam Profiling Results | Updates in the He-Ne beam profiling
experiment.
I've made intensity profile |
|
|
13053
|
Thu Jun 8 12:43:42 2017 |
Dhruva | Update | Optical Levers | Beam Profiling Results |
|
|
|
12997
|
Wed May 17 18:08:45 2017 |
Dhruva | Update | Optical Levers | Beam Profiling Setup | Andrew and I set up the razor blade beam
profiling experiment for He-Ne lasers on
the "SP" table. Once I receive |
|
|
1724
|
Wed Jul 8 18:46:56 2009 |
Dmass | AoG | Electronics | Beam Scan Funky | The beam scan (which has been living in
the bridge subbasement for a bit now) is
in a state of imperfection. |
|
|
6431
|
Tue Mar 20 17:50:44 2012 |
Suresh | Update | Computers | Beam Scan machine fixed | There was something wrong with the Beam
Scan PC. The mouse and screen
were not responding and the PC was asking |
|
|
10106
|
Fri Jun 27 10:09:10 2014 |
Harry | Update | General | Beam Waist Measurement | Purpose
To use a razorblade to measure beam
waist at four points along the optical axis, |
|
|
10204
|
Tue Jul 15 18:26:40 2014 |
Harry | Update | General | Beam Waist, Telescope, and Fiber Coupling | Goal
To design an optical setup (telescope
/ lens) to couple 1064nm NPRO light into |
|
|
10139
|
Mon Jul 7 14:42:33 2014 |
Harry | Update | General | Beam Waists | I was finally able to get a reasonable
measurement for the beam waist(s) of the
spare NPRO. |
16x |
|
10144
|
Mon Jul 7 18:11:04 2014 |
Koji | Update | General | Beam Waists | -
Plots should be directly attached on the
elog. (Attaching codes in a zip |
|
|
10170
|
Wed Jul 9 23:02:33 2014 |
Harry | Update | General | Beam Waists via Beamscan | Today, I borrowed the beam profiler
from Brian (another SURF) in order to double
check my razor blade measurement figures, |
|
|
1784
|
Thu Jul 23 20:30:23 2009 |
Alberto | Update | PSL | Beam aligned to the Farady | After yesterday's changes in the MC cavity
state today it was necessary to optimize
the alignment to the Faraday. |
|
|
7590
|
Mon Oct 22 21:20:36 2012 |
Jenne | Update | PSL | Beam attenuation optics in place | [Jenne, Raji (before dinner)]
We put the beam attenuation optics
in place. Before putting any optics |
|
|
14919
|
Tue Oct 1 18:35:12 2019 |
gautam | Update | General | Beam centering campaign |
With TRX and TRY maximized using
ASS, I centered the Oplev spots on the respective
QPDs for the four test masses and the BS. |
|
|
11766
|
Mon Nov 16 11:48:34 2015 |
yutaro | Update | Optical Levers | Beam centering for the oplev of ETMY | [yutaro, ericq]
We made the beam spot on QPD for |
|
|
11783
|
Wed Nov 18 17:32:36 2015 |
yutaro | Update | Optical Levers | Beam centering for the oplev of ITMY | [yutaro, Koji]
|
|
|
11805
|
Tue Nov 24 11:18:47 2015 |
yutaro | Update | Optical Levers | Beam centering for the oplev of ITMY | I made the beam spot |
|
|
8279
|
Tue Mar 12 14:02:22 2013 |
Jenne | Update | Alignment | Beam drift - mystery partially solved? | Steve just told those of us in the control
room that the custodian who goes into the
IFO room regularly steps on the blue support |
|
|
7837
|
Mon Dec 17 11:20:58 2012 |
Jenne | Update | SUS | Beam dumps on vertex oplevs removed | I'm not sure when this was done, but there
were beam dumps in front of the lasers for
BS/PRM oplevs as well as ITMY/SRM oplevs. |
|
|
12066
|
Thu Apr 7 12:51:24 2016 |
gautam | Update | endtable upgrade | Beam height differences | Steve has finished installing the enclosure
on the new endtable. So Eric and I decided
to try and lock the X arm and measure the |
|
|
4222
|
Fri Jan 28 13:07:31 2011 |
Jenne | Update | IOO | Beam is back on the WFS | The MC WFS have had beam dumps in front
of them for the past ~2 weeks, until I could
find the appropriate optic to put in the |
|
|
10325
|
Fri Aug 1 22:56:27 2014 |
Koji | Update | General | Beam lost in the chamber??? | I was investigating several issues on the
IFO. As many of you noticed and not elogged,
ITMX had frequent kicking without its oplev |
|
|
17516
|
Wed Mar 22 15:51:44 2023 |
Alex | Update | IMC | Beam offset calculation for MC1,2,3 from dither results | I have organized the resulting data from
running dither lines on MC1,2,3. The data
has been collected from diaggui as shown |
|
|
17519
|
Thu Mar 23 16:21:10 2023 |
rana | Update | IMC | Beam offset calculation for MC1,2,3 from dither results | I have changed the MC SUS output matrices
by a few % for some A2L decoupling - if it
causes trouble, please feel free to revert. |
|
|
17552
|
Wed Apr 19 17:32:11 2023 |
Alex | Update | IMC | Beam offset calculation for MC1,2,3 from dither results | Today, we ran dither lines on the MC1,2,3
mirrors in YAW from 136598007
to 1365981967 and similarly |
|
|
17559
|
Mon Apr 24 18:33:22 2023 |
Alex | Update | IMC | Beam offset movement for MC1,2,3 in PIT and YAW from dither results | Mayank and I worked on finalizing the plots
for the beam offset from the dithering test
done in 17552. |
|
|
11839
|
Wed Dec 2 17:14:33 2015 |
yutaro | Update | LSC | Beam on POX11 is possibly not centered well | I checked how POXDC level changes when
the angle of ITMX is varied. ETMX was misaligned.
Then I found that in YAW direction |
|
|
11847
|
Fri Dec 4 12:33:52 2015 |
yutaro | Update | LSC | Beam on POX11 is possibly not centered well | To focus POX beam on POX11 PD, I added
an iris and a lens before POX11 PD as you
can see in Attachment 1. |
|
|
11850
|
Fri Dec 4 23:02:13 2015 |
yutaro | Update | LSC | Beam on POX11 is possibly not centered well | [yutaro, Koji]
Now, the beam on POX11 PD is well
centered and well focused. |
|
|
8331
|
Fri Mar 22 01:28:56 2013 |
Manasa | Update | Lasers | Beam profile of NPRO from ATF | The NPRO from ATF has been installed on
the POY table.
I have been making measurements to |
|
|
12081
|
Mon Apr 18 00:29:00 2016 |
gautam | Update | General | Beam profiling + injection current scan | Summary
I've finished up the remaining
characterization of the repaired 1W Innolight |
6x |
|
511
|
Mon Jun 2 12:20:35 2008 |
josephb | Bureaucracy | Cameras | Beam scan has moved | The beamscan has been moved from the Rana
lab back over to the 40m, to be used to calibrate
the Prosilica cameras. |
|
|
7367
|
Sat Sep 8 00:04:53 2012 |
Jenne | Update | General | Beam scan measurement plan - to do Monday morning. | [MikeJ, Jenne]
We have a plan for how we're going
to measure the beam after PR3. Mike |
|
|
7369
|
Mon Sep 10 08:50:35 2012 |
Steve | Update | General | Beam scan measurement plan - to do Monday morning. |
I misaligned ITMX pitch on
Friday and brought out the beam at 44" |
|
|
14018
|
Tue Jun 26 10:50:14 2018 |
pooja | Update | Cameras | Beam spot tracking using OpenCV | Aim: To track the motion of beam spot in
simulated video.
I simulated a video that moves |
|
|
3864
|
Thu Nov 4 17:57:27 2010 |
steve | Update | General | BeamScanner is working again | Koji, Suresh and Steve,
The beam scanner is back from repair.
Koji and Suresh helped to move the I/O address |
|
|
14058
|
Thu Jul 12 15:15:47 2018 |
Sandrine | Update | | Beat Note Measurements for Cavity Scans | (Gautam, Sandrine)
We calculated the expected power
of the beat note for Annalisa's Y arm |
|
|
10333
|
Tue Aug 5 19:05:41 2014 |
Akhil | Update | General | Beat Note Testing on EPICS Channels | |
|
|
8721
|
Wed Jun 19 01:45:49 2013 |
Manasa | Update | Green Locking | Beat frequency sweep for 3FSR | Measurements:
1. Calibrating offset : |
|
|
11470
|
Thu Jul 30 15:58:00 2015 |
ericq | Update | LSC | Beat note Alignment fluctuation effects measured |
|
|
|
11478
|
Tue Aug 4 03:02:30 2015 |
ericq | Update | LSC | Beat note Alignment fluctuation effects measured | Notes from tonight's work:
PMC alignment tweaked.
Not much gained
WFS/MC2 offsets |
|
|
4502
|
Thu Apr 7 21:58:57 2011 |
Aidan | Summary | Green Locking | Beat note amplitude | Having convinced myself that the green
Hartmut PD is giving an acceptable response
at RF frequencies I decided to double-check |
|
|
4534
|
Fri Apr 15 22:54:20 2011 |
Aidan, Bryan | Update | Green Locking | Beat note amplitude on Vertex PD | I was investigating the beat note amplitude
on the vertex PD again yesterday. The incident
power on the PD was 150uW in the PSL green |
|
|
8386
|
Mon Apr 1 23:22:17 2013 |
Annalisa | Update | Auxiliary locking | Beat note between "Alberto" NPRO laser and PSL laser | I measured the beat note between the "Alberto"
NPRO laser and the PSL varying the PSL temperature
and find the matching NPRO temperature that |
|