| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
13086
|
Thu Jun 29 00:13:08 2017 |
Kaustubh | Update | Computer Scripts / Programs | Transfer Function Testing | In continuation to my previous posts, I
have been working on evaluating the data
on transfer function. Recently, I have calculated |
|
|
17489
|
Thu Mar 2 18:37:05 2023 |
Tomohiro | Update | IMC | Transfer Function for IMC mirrors using appropriately filtered noise | Summary
Alex, Anchal, and I measure
the open-loop transfer function for |
|
|
17490
|
Fri Mar 3 16:52:57 2023 |
rana | Update | IMC | Transfer Function for IMC mirrors using appropriately filtered noise | that is great
I think we would like to set the
WFS1 P/Y UGFs to be ~2-3 Hz, and the MC_TRANS |
|
|
17494
|
Tue Mar 7 15:02:43 2023 |
Tomohiro | Update | IMC | Transfer Function for IMC mirrors using appropriately filtered noise | Summary
Alex, Anchal, and I adjusted
the every overall gain iin P/Y of WFS1, |
|
|
17498
|
Wed Mar 8 09:58:24 2023 |
rana | Update | IMC | Transfer Function for IMC mirrors using appropriately filtered noise | does Anyone understand why the broadband
noise injection is so bad around 1 Hz? we
do not see this issue with swept sine. noise |
|
|
17486
|
Wed Mar 1 17:13:38 2023 |
Alex | Update | IMC | Transfer Function for IMC mirrors using sine sweep | The following work has been done by Tomohiro,
Anchal and I:
To acquire the transfer functions |
|
|
5713
|
Thu Oct 20 16:33:24 2011 |
Katrin | Update | Green Locking | Transfer function YARM PDH box | Yesterday, I measured the transfer function
of the YARM PDH box.
|
|
|
3210
|
Tue Jul 13 21:04:49 2010 |
tara,rana | Summary | PSL | Transfer function of FSS servo | I
measured FSS's open loop transfer function.
|
|
|
1935
|
Fri Aug 21 18:37:16 2009 |
Jenne | Update | General | Transfer function of Mode Cleaner Stacks | Using free-swinging Mode Cleaner OSEM data
and Guralp seismometers, I have taken transfer
functions of the Mode Cleaner stacks. |
|
|
1938
|
Tue Aug 25 00:35:04 2009 |
rana | Update | General | Transfer function of Mode Cleaner Stacks | Looks like all of the accelerometers and
seismometers have been disconnected since
early AM last Monday when Clara disconnected |
|
|
886
|
Tue Aug 26 12:00:45 2008 |
Jenne | Summary | PEM | Transfer function of Ranger seismometer | This finishes up the calibration that Rana
started in elog # 881.
|
|
|
17656
|
Sat Jun 24 21:31:02 2023 |
Mayank | Update | Electronics | Transfer function of the new coil driver board | I measured the transfer function
of the new coil driver board. This was done
to estimate the correct Sim-Dewhithinng and |
|
|
7204
|
Thu Aug 16 13:49:33 2012 |
Yaakov | Update | PEM | Transfer functions of seismic stacks, differential motion of test mass | I estimated the transfer function of the
seismic stacks using a rough model I made
based on the LIGO document LIGO |
8x |
|
7209
|
Thu Aug 16 20:04:46 2012 |
Yaakov | Update | PEM | Transfer functions of seismic stacks, differential motion of test mass |
I made the plots a little nicer
and added new sensor noises (from Brian Lantz's |
6x |
|
17837
|
Tue Sep 12 18:49:51 2023 |
Koji | Update | General | Transformed 3x 18bit AI chassis into 16bit | For the preparation of the electronics
upgrade, three 18bit DAC AI chassis were
transformed to 16bit version. |
|
|
13016
|
Sat May 27 10:26:28 2017 |
Kaustubh | Update | General | Transimpedance Calibration | Using Alberto's paper LIGO-T10002-09-R
titled "40m RF PDs Upgrade", I
calibrated the vertical axis in the bode |
|
|
10079
|
Fri Jun 20 11:41:18 2014 |
Nichin | Update | Electronics | Transimpedence measurement-BBPD | EDIT:
Please ignore the following data. The revised |
|
|
10085
|
Fri Jun 20 19:09:23 2014 |
Koji | Update | Electronics | Transimpedence measurement-BBPD | Oh,
nice! This must be a new technique to have
a higher transimpedance by breaking the PD. |
|
|
10089
|
Mon Jun 23 21:16:14 2014 |
Nichin | Update | Electronics | Transimpedence measurement-BBPD | [Nichin,
Koji]
Today |
|
|
14121
|
Wed Aug 1 16:23:48 2018 |
Koji | Summary | Computers | Transition of the main NFS disk on chiara | [Gautam Koji]
Taking the opportunity to shutdown
c1ioo for adding a DAC card, we shutdown |
|
|
14138
|
Mon Aug 6 09:42:10 2018 |
Koji | Summary | Computers | Transition of the main NFS disk on chiara | Follow up:
- At least it was confirmed that
the local backup (4TB->2TB) is regularly |
|
|
10947
|
Wed Jan 28 03:01:24 2015 |
Jenne | Update | LSC | Transitioned DARM to AS55Q | [Jenne, Diego]
Tonight
we were able to transition DARM from DC transmission |
|
|
10949
|
Wed Jan 28 14:19:02 2015 |
rana | Update | LSC | Transitioned DARM to AS55Q | Why AS55/(TRX + TRY) instead of just TRX?
Isn't (TRX+TRY) controlled by CARM? |
|
|
11090
|
Tue Mar 3 04:41:45 2015 |
Jenne | Update | LSC | Transitioned DARM to AS55Q, some other work | Better elog tomorrow - notes for now:
REFL165 for PRMI has been "a
champ" (quote from Q). We're |
|
|
11095
|
Tue Mar 3 19:19:54 2015 |
Jenne | Update | LSC | Transitioned DARM to AS55Q, some other work | [Jenne, EricQ]
A slightly more coherent elog for
last night's work. |
|
|
11096
|
Wed Mar 4 00:50:36 2015 |
rana | Bureaucracy | Treasure | Transitioned DARM to AS55Q, some other work | Just
in case there was some confusion, the champagne
on my desk is not to be opened |
|
|
10891
|
Tue Jan 13 03:58:27 2015 |
Jenne | Update | LSC | Transitioned to ASDC MICH (PRMI and PRFPMI) | [Jenne, Diego, EricQ]
Hopefully there will be more later,
but Chiara just went down (network? other? |
|
|
10896
|
Tue Jan 13 15:11:30 2015 |
diego | Update | LSC | Transitioned to ASDC MICH (PRMI and PRFPMI) | These are the parameters of the UGF servos
we used last night:
|
|
|
7179
|
Tue Aug 14 15:58:44 2012 |
Jenne | Update | General | Translation to English: larger optical tables at the ends |
|
|
|
7624
|
Thu Oct 25 15:38:06 2012 |
Raji | Update | Alignment | Transmitance Measurements on LaserOptik mirror | I measured the transmitted power @1064nm
on one of the LaserOptik mirrors labled SN6
Here is the data |
|
|
7644
|
Wed Oct 31 12:58:17 2012 |
Raji | Update | Alignment | Transmitance Measurements on LaserOptik mirror |
|
|
|
7648
|
Wed Oct 31 17:33:39 2012 |
Koji | Update | Alignment | Transmitance Measurements on LaserOptik mirror | ...Looks like the coating is out of spec
at any angle for 1064nm. E11200219-v2 |
|
|
7653
|
Thu Nov 1 10:13:53 2012 |
jamie | Update | Alignment | Transmitance Measurements on LaserOptik mirror |
|
|
|
7654
|
Thu Nov 1 10:19:11 2012 |
jamie | Update | Alignment | Transmitance Measurements on LaserOptik mirror |
|
|
|
10811
|
Wed Dec 17 18:14:36 2014 |
ericq | Update | ASC | Transmon QPD -> ASC servos ready for comissioning | I have completed all of the model
modifications and medm screen updates to
allow for feedback from the transmon QPD |
|
|
10157
|
Tue Jul 8 22:53:02 2014 |
Jenne, Rana | Update | Electronics | Transmon QPD / whitening | We need to work farther on checking
out the end transmission QPD electronics
situation. |
|
|
10908
|
Thu Jan 15 18:57:41 2015 |
ericq | Update | ASC | Transmon QPD loops live | I've measured the sensing for each
of the arms, by using our calibrated oplevs,
in terms of QPD counts per micron. It is: |
|
|
9637
|
Fri Feb 14 02:09:55 2014 |
ericq | Update | Electronics | Transmon QPD whitening | [Quick post, will follow up with
further detail later. Excuse my sleepy ELOG
writing] |
|
|
9642
|
Mon Feb 17 20:35:19 2014 |
ericq | Update | Electronics | Transmon QPD whitening | My apologies for all of that crap I left
at the Y-end... I cleaned the rest of it
up today. |
|
|
1108
|
Mon Nov 3 19:12:27 2008 |
alberto | Update | General | Transverse mode spacing measurement for the X arm | I know a lot of expectations have been building
up on these days in the scientific community
at the 40m towards a conclusive elog entry |
|
|
4431
|
Wed Mar 23 10:34:17 2011 |
josephb | Update | CDS | Trend issue fixed | [Joe, Alex]
Yesterday during the day, Alex ran
a script to fix the time stamps in the trends |
|
|
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 |
|
|
762
|
Wed Jul 30 00:42:04 2008 |
rana | Update | SUS | Trends and file formats | I propose that we do not use .eps format but
.pdf instead. For images like the plots Sharon
has below we should use only .png and for |
|
|
594
|
Sun Jun 29 19:19:47 2008 |
rana | Summary | IOO | Trends of the PSL/IOO Quads over 1000 days | Only IOO POS has been working for the past
2 years. I guess we should recommission the
IOO ANG and REFL QPDs |
|
|
17744
|
Wed Aug 2 03:30:22 2023 |
Hiroki | Update | LSC | Trials for sideband-resonant PRMI locking | [Yuta, Hiroki]
In
preparation for locking the PRFPMI, we tried |
|
|
11097
|
Wed Mar 4 03:42:14 2015 |
Jenne | Update | LSC | Tried a few CARM / ALS fool things, no success | Much of tonight was spent fighting with
ETMX. This time, ASC was definitely
off, there was nothing coming out of the |
|
|
10746
|
Tue Dec 2 02:44:45 2014 |
Jenne | Update | LSC | Tried cav pole compensation trick - fail | [Jenne, Diego]
First, random notes:
saw a violin peak in CARM |
|
|
10748
|
Wed Dec 3 01:46:12 2014 |
Koji | Update | LSC | Tried cav pole compensation trick - fail | Where did these 200Hz, 6kHz come from?
I wonder what are the correct
filters to be incorporated in the filter |
|
|
16232
|
Wed Jun 30 18:44:11 2021 |
Anchal | Summary | LSC | Tried fixing ETMY QPD | I worked in Yend station, trying to get
the ETMY QPD to work properly. When I started,
only one (quadrant #3) of the 4 quadrants |
|
|
5575
|
Thu Sep 29 11:25:55 2011 |
Jenne | Update | Adaptive Filtering | Tried new c-code, Fail. | [Mirko, Jenne]
Mirko edited the c-code to use Den's
stuff that he put in the elog last night. |
|