| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
31
|
Tue Oct 30 16:55:40 2007 |
tobin | Routine | | Drag-wiping perfected | Steve, Tobin
Steve procured an assortment of syringes |
|
|
108
|
Thu Nov 15 18:36:48 2007 |
John | Summary | | PSL table work | I've rotated the lambda/2 plate to 340deg
(from 6 deg) and blocked one arm of the Mach-Zender.
Undo both if you need to. |
|
|
130
|
Wed Nov 28 12:43:53 2007 |
Andrey | Bureaucracy | | Here was the PDF-file of my presentation |
I was making a report with powerpoint presentation
during that Wednesday's 40-m meeting.
|
|
|
215
|
Thu Dec 27 12:12:02 2007 |
pkp | Update | | Update on GigE Camera | So I finally got the linux software to compile
on mafalda. I got the software to dump all
the information regarding the camera onto |
|
|
254
|
Wed Jan 23 09:27:55 2008 |
steve | Update | | etmy sus damping restored | Seismis event trips etmy |
|
|
548
|
Fri Jun 20 02:20:33 2008 |
Yoichi | Update | | PMC transmittance degradation | The PMC transmitted light power has been degrading
constantly for last two weeks (see the attachment
1).
|
|
|
563
|
Wed Jun 25 09:46:45 2008 |
Sharon | Update | | Adaptive Filters | I have been learning about different methods
for applying adaptive filters to improve
the Mode Cleaner lock in specific, and other |
|
|
577
|
Thu Jun 26 18:29:44 2008 |
Jenne | Update | | MC Back online | Jenne, Rob, Yoichi
I was playing with the Mode Cleaner earlier |
|
|
680
|
Wed Jul 16 11:26:47 2008 |
Max Jones | Update | | This Week | Baffles.
I got a battery for the magnetometer today |
|
|
704
|
Mon Jul 21 09:52:05 2008 |
Sharon | Update | | Adaptive code changes | Thanks to Alex, we now save the coefficients
of the adaptive filter every cycle. When
we choose ENABLE: OFF on the MEDM screen, |
|
|
709
|
Mon Jul 21 19:48:57 2008 |
Sharon | Update | | how tp restart C1ASS | How to restart C1ASS:
1. reboot
|
|
|
720
|
Wed Jul 23 10:47:05 2008 |
Sharon | Update | | Weekly update | This week I spent some time with Alex who
updated the adaptive code to save the filter's
coeffs all the time, stop when I open the |
|
|
723
|
Wed Jul 23 13:52:26 2008 |
Sharon | Update | | MEDM changes | There is a new MEDM screen now when you go
from c1ass>top>pem.
Instead of having 12 "mini filters" screens |
|
|
739
|
Fri Jul 25 13:30:53 2008 |
Sharon | Update | | Changes in ASS computer | I editted the simulink diagram of the ASS
computer so it now has 2 more channels reading
2 sets of the FIR coefficients to match Alex's |
|
|
740
|
Fri Jul 25 17:32:46 2008 |
Sharon | Update | | ASS computer | So, it seems a bit too complicated getting
the coefficients the way I wanted it to happen
(simulink-.ini...).
|
|
|
747
|
Mon Jul 28 12:02:32 2008 |
Sharon | Update | | accelerometers settings | Jenne, Sharon
|
|
|
750
|
Mon Jul 28 17:58:05 2008 |
Sharon | Update | | TOP screen changes | I wanted to test the adaptive code with a
downsampling rate of 32 instead of 16. To
do this I entered a 32 Hz ((2048/32)/2 - |
|
|
760
|
Tue Jul 29 21:04:55 2008 |
Sharon | Update | | OSEM's Power Spectrum | From 16:30 this afternoon |
8x |
|
765
|
Wed Jul 30 12:36:19 2008 |
Sharon | Update | | Weekly update | This week included many computer's issues.
I tested Alex's new C code (the one that
saves the FIR coefficients and restores them |
|
|
814
|
Fri Aug 8 11:04:34 2008 |
Sharon | Update | | MCL Wiener filter | I took some old data from Rana and converted
the units of the Weiner filter to m/m so
to make the effect of the seismometer and |
|
|
841
|
Fri Aug 15 16:45:43 2008 |
Sharon | Update | | Converting from FIR to IIR | I have been looking into different techniques
to convert from FIR to IIR. This is so we
can see how effective the adaptive FIR filter |
|
|
850
|
Tue Aug 19 10:36:34 2008 |
Sharon | Update | | Calibrating accelerometers | I took apart the accelerometers near MC1 and
MC2.
The 2 sets of 3 accelerometers are now covered |
|
|
854
|
Tue Aug 19 17:00:19 2008 |
Sharon | Update | | Wiener TF calibration - update | [I]This is an update for post 814[/I]
I added the calibration gains I got for the |
|
|
855
|
Tue Aug 19 17:15:34 2008 |
Sharon | Update | | MEDM | I plugged in the gains I got for the accelerometers
in the accelerometers' filters in the PEM
screen of the adaptive filter |
|
|
863
|
Wed Aug 20 17:02:01 2008 |
Sharon | Update | | More FIR to IIR | I tested another method for converting from
FIR to IIR other than the 2 mentioned in
post 841.
|
|
|
870
|
Fri Aug 22 13:58:39 2008 |
Sharon | Summary | | Trend of the Wiener TF | In order to understand if we really need an
adaptive filter, I used old data of MC_L
and the accelerometers and seismometer to |
|
|
916
|
Wed Sep 3 18:45:01 2008 |
Alberto | Configuration | | PD3 gain | Alberto, Yoichi,
We found that the PD3 servo was unstable |
|
|
1442
|
Mon Mar 30 12:29:17 2009 |
Yoichi | Configuration | | MC1 glitches not seen during the weekend | The attached is the MC trend for the past
12 hours.
There is no MC1 glitches in the OSEM signals. |
|
|
1556
|
Thu May 7 17:59:23 2009 |
Alberto | Configuration | | MC WFS | This afternoon the MC could not get locked.
I
first checked the Osems values at the MC
mirrors and compared them to the trend of |
|
|
1739
|
Mon Jul 13 16:59:10 2009 |
Zach | Update | | GigE Phase Camera | Today, I moved the router from on top of
the PSL into the control room in order to
perform dark field tests on the GC650 (which |
|
|
1797
|
Mon Jul 27 14:43:34 2009 |
Chris | Update | | Photodetectors | I found two ThorLabs PDA55 Si photodetectors
that says detect visible light from DC to
10MHz that I'm going to use from now on. |
|
|
1907
|
Fri Aug 14 18:33:02 2009 |
Clara | Update | | Record of Accelerometer and Seismometer Movements | Rather than make a new elog post every
time I move something, I'm going to just
keep updating this Google spreadsheet, which |
|
|
2984
|
Tue May 25 17:04:37 2010 |
Kevin | Update | | Beam Profile After Mode Cleaner | I fit the data from the beam profile that
Jenne measured on 5/21/2010. The distances
are measured from halfway between MC1 and |
|
|
3027
|
Tue Jun 1 18:39:59 2010 |
Nancy | Update | | Lead spheres for the seismographs |
the lead spheres that were placed
below the granite slab have been flattened |
|
|
3168
|
Wed Jul 7 12:45:00 2010 |
nancy | Update | | Weekly Update | Wednesday after the meeting - Started report,
learnt mode cleaner locking from Kiwamu and
Rana, saw how to move optics on the tables |
|
|
3560
|
Sun Sep 12 23:02:53 2010 |
valera | Update | | PMC mode matching | Kiwamu and I found that the first lens
in the PMC mode matching telescope was mislabeled.
It is supposed to be PLCX-25.4-77.3-C and |
|
|
3561
|
Sun Sep 12 23:16:52 2010 |
valera | Update | | FSS mode matching | The attached plot shows the beam scans
of the beam leaking from the back mirror
of the PMC to the BS cube that first turns |
|
|
3562
|
Mon Sep 13 00:19:32 2010 |
rana | Update | | VCO Driver Output power v. slider control voltage | I measured the RF power output of the VCO
Driver box as a function of slider value.
I measured using the Gigatronics Handheld |
|
|
3579
|
Wed Sep 15 19:29:13 2010 |
valera | Summary | | PSL power budget |
Location
|
|
|
3580
|
Fri Sep 17 01:36:14 2010 |
valera | Update | | PMC line width | The attached plots show the PMC cavity
line width measurement with 1 mW and 160
mW into the PMC. The two curves on each plot |
|
|
3897
|
Thu Nov 11 15:27:43 2010 |
valera, steve | Configuration | | ISS AOM installed | We installed the ISS AOM in the PSL.
The AOM was placed right after the EOM. The
beam diameter is ~600 um at the AOM. The |
|
|
4317
|
Thu Feb 17 22:51:04 2011 |
josephb, valera | Summary | | dither alignment model | We made a model for the dither angular
stabilization system c1ass.mdl. The attached
file shows the diagram. |
|
|
4335
|
Tue Feb 22 00:18:47 2011 |
valera | Configuration | | c1ioo and c1ass work and related fb crashes/restarts | I have been editing and reloading the c1ioo
model last two days. I have restarted the
frame builder several times. After one of |
|
|
4339
|
Tue Feb 22 23:11:42 2011 |
valera | Update | | new medm screens: C1ASS.adl and C1MCASS.adl | |
|
|
4345
|
Wed Feb 23 16:34:42 2011 |
valera | Configuration | | pmc lens staged | I put the PMC last mode matching lens (one
between the steering mirrors) on a translation
stage to facilitate the PMC mode matching. |
|
|
4625
|
Wed May 4 13:51:51 2011 |
valera | Configuration | | Intermittent MC3 UL PD signal | The attached plot shows the 30 day trend
of the MC3 UL PD signal. The signal dropped
to zero at some point but now it is close |
|
|
4627
|
Wed May 4 15:22:39 2011 |
kiwamu | Update | | Re: Intermittent MC3 UL PD signal | I
went push all the possible connectors for
the MC3 shadow sensors including the SCSIs, |
|
|
4959
|
Mon Jul 11 10:10:31 2011 |
Ishwita | Configuration | | AA board | The AA board shown in attachment 1 will
be used in the seismometer hardware setup.
A cartoon of this setup is shown in attachment |
|
|
4999
|
Wed Jul 20 11:42:47 2011 |
Ishwita, Manuel | Update | | Weekly summary |
We gave a white-board presentation
on derivation of formula for optimum Wiener
filter coefficients and wrote a latex document |
|
|
5015
|
Thu Jul 21 23:36:51 2011 |
Jenny | Update | | Fitting beam waist with MATLAB | I am starting work on the PSL table at
the 40m. My goal is to lock the laser coming
from the nearby table to the FP cavity and |
|