| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
10421
|
Thu Aug 21 22:10:52 2014 |
rana | Summary | Computer Scripts / Programs | network movements | To help development of the data visualization
project, we've assigned the .101 and .102
IP to DataVis. This is being used by the |
|
|
10424
|
Fri Aug 22 15:11:55 2014 |
andres, nicolas | Summary | IOO | MC WFS activity | 1. Before doing anything, we centered the
IOO QPDs.
2. With the WFS enabled, we offloaded |
|
|
10425
|
Fri Aug 22 15:58:02 2014 |
Steve | Summary | IOO | MC WFS activity |
|
|
|
10442
|
Tue Sep 2 22:54:27 2014 |
Koji | Summary | LSC | phase tracker UGF | FYI and FMI
Phase tracker UGF is Q_AMP
* G * 2 PI / 360 where Q_AMP is |
|
|
10454
|
Thu Sep 4 18:30:13 2014 |
Gabriele | Summary | ASC | Optimal Gouy phase for POP QPD | Jenne asked me to simulate the signals
on POP QPD when moving different mirrors,
as a function of the Gouy phase where the |
|
|
10455
|
Fri Sep 5 00:56:00 2014 |
rana | Summary | Optical Levers | ITM OLs recentered: violations found | I re-centered the ITMX & ITMY Optical
lever beams today since they were off. First
I aligned the beam into the vacuum so that |
|
|
10492
|
Wed Sep 10 22:17:29 2014 |
Koji | Summary | LSC | X/Y green beat mode overlap measurement | [Koji Manasa]
We made quantitative inspection of
the X/Y green beat setup on the PSL table. |
|
|
10518
|
Thu Sep 18 10:08:07 2014 |
steve | Summary | SUS | oplev laser summary updated |
|
|
|
10694
|
Mon Nov 10 23:14:20 2014 |
rana | Summary | SUS | SRM: damping gains & Optical Lever servo Tune-up |
tweaked gains for POS,
PIT, YAW, SIDE by ~10-20% to get nice ringdowns
with Q~5.
Measured bounce rool |
|
|
10706
|
Wed Nov 12 22:22:11 2014 |
Koji | Summary | IOO | Estimation of the angular jitter imposed by the TTs | [Koji, Rana, Jenne]
One coil of the TT produce 36nrad/rtHz
at DC. |
|
|
10722
|
Mon Nov 17 20:28:17 2014 |
rana | Summary | IOO | MC servo summing amp | I modified the /cvs/cds/caltech/target/c1psl/psl.db
file to adjust the records for the FSS-FAST
signal (to make it go yellow / red at the |
|
|
10760
|
Sun Dec 7 13:11:57 2014 |
manasa | Summary | General | Frequency Offset Locking - To Do List | Attached is the timeline for Frequency
Offset Locking related activities. All activities
will be done mostly in morning and early |
|
|
10765
|
Mon Dec 8 15:54:39 2014 |
manasa | Summary | General | Dec 8 - Check Frequency Counter module |
|
|
|
10766
|
Mon Dec 8 20:53:51 2014 |
diego | Summary | General | Dec 8 - Check Frequency Counter module |
|
|
|
10767
|
Tue Dec 9 00:30:27 2014 |
manasa | Summary | General | Dec 9 - Elaborate to do list |
|
|
|
10770
|
Tue Dec 9 16:06:46 2014 |
diego | Summary | General | Dec 8 - Check Frequency Counter module |
|
|
|
10771
|
Tue Dec 9 16:07:16 2014 |
manasa | Summary | General | Dec 9 - FC module and fiber chassis |
|
|
|
10775
|
Wed Dec 10 16:12:29 2014 |
manasa | Summary | General | Dec 10 - PSL table |
|
|
|
10780
|
Thu Dec 11 12:50:12 2014 |
manasa | Summary | General | PSL table optical layout | I assembled the telescope to couple
PSL light into the fiber. The maximum coupling
that I could obtain was |
|
|
10787
|
Thu Dec 11 23:34:06 2014 |
manasa | Summary | General | PSL table optical layout |
|
|
|
10788
|
Fri Dec 12 02:30:25 2014 |
Jenne | Summary | General | PSL table optical layout |
|
|
|
10791
|
Fri Dec 12 14:38:39 2014 |
manasa | Summary | General | Frequency Offset Locking - To Do List (Revised) | Unfortunately the order placed for beam
samplers last week did not go through. These
will be used at the X and Y end tables to |
|
|
10792
|
Fri Dec 12 15:19:04 2014 |
manasa | Summary | General | Dec 12 - PSL table |
|
|
|
10800
|
Mon Dec 15 22:40:09 2014 |
rana | Summary | PSL | PMC restored | Found that the PMC gain has been
set to 5.3 dB instead of 10 dB since 9 AM
this morning, with no elog entry. |
|
|
10808
|
Wed Dec 17 11:57:56 2014 |
manasa | Summary | General | Y arm optical layout | I
was working around the PSL table and Y endtable
today. |
|
|
10829
|
Mon Dec 22 15:46:58 2014 |
Kurosawa | Summary | IOO | Seven transfer functions | IMC OL TF has been measured from 10K to
10M |
|
|
10849
|
Tue Dec 30 20:35:59 2014 |
rana | Summary | PSL | PMC Tune Up |
Calibrated the Phase Adjust
slider for the PMC RF Modulation; did this
by putting the LO and RF Mod out on the TDS |
|
|
10879
|
Thu Jan 8 19:02:42 2015 |
Jax | Summary | Electronics | MC demod modifications | Here's a summary of the changes made
to the D990511 serial 115 (formerly
known as REFL 33), as well as a short procedure. |
|
|
10899
|
Wed Jan 14 02:11:07 2015 |
rana | Summary | Treasure | 2-loop Algebra Loopology | I show here
the matrix formalism to calculate analytically
the loop TF relationships for the IMC w/ |
|
|
10952
|
Wed Jan 28 23:53:24 2015 |
Koji | Summary | ASC | Xarm ASS fix | X-Arm
ASS was fixed.
ASS_DITHER_ON.snap was updated so |
|
|
10974
|
Wed Feb 4 18:27:55 2015 |
Koji | Summary | ASC | Xarm ASS fix | Please remember
that Xarm ASS needs FM6 (Bounce filters) |
|
|
10986
|
Sat Feb 7 13:34:11 2015 |
Koji | Summary | PSL | ISS AOM driver check | I wanted to check the status of the ISS.
The AOM driver response was measured on Friday
night. |
|
|
10988
|
Sun Feb 8 21:54:50 2015 |
rana | Summary | PSL | ISS AOM driver check | This is good
news. It means that the driver probably won't
limit the response of the loop - I expect |
|
|
11005
|
Wed Feb 11 18:11:46 2015 |
Koji | Summary | LSC | 3f modulation cancellation | 33MHz sidebands can be elliminated by careful
choice of the modulation depths and the relative
phase between the modulation signals. |
|
|
11029
|
Sat Feb 14 19:54:04 2015 |
Koji | Summary | LSC | 3f modulation cancellation | Optical
Setup
[Attachment 1] |
|
|
11031
|
Sat Feb 14 20:37:51 2015 |
Koji | Summary | LSC | 3f modulation cancellation | Experimental
results
- PD response [Attachment |
|
|
11032
|
Sat Feb 14 22:14:02 2015 |
Koji | Summary | LSC | [HOW TO] 3f modulation cancellation | When I finished my measurements, the modulation
setup was reverted to the conventional one.
If someone wants to use the 3f cancellation |
|
|
11033
|
Sun Feb 15 16:20:44 2015 |
Koji | Summary | LSC | [ELOG LIST] 3f modulation cancellation | Summary
of the ELOGS
3f
modulation cancellation theory |
|
|
11034
|
Sun Feb 15 20:55:48 2015 |
rana | Summary | LSC | [ELOG LIST] 3f modulation cancellation | I wonder if DRMI can be locked on 3f using
this lower 55 MHz modulation depth. It seems
that PRMI should be unaffected, but that |
|
|
11035
|
Mon Feb 16 00:08:44 2015 |
Koji | Summary | LSC | [ELOG LIST] 3f modulation cancellation | This KTP crystal has the maximum allowed
RF power of 10W (=32Vpk) and V_pi = 230V.
This corresponds to the maximum allowed |
|
|
11036
|
Mon Feb 16 01:45:12 2015 |
Koji | Summary | LSC | modulation depth analysis | Based on the measured modulation profiles,
the depth of each modulation was estimated.
Least square sum minimization of the |
|
|
11106
|
Fri Mar 6 00:59:13 2015 |
rana | Summary | IOO | MC alignment not drifting; PSL beam is drifting | In the attached plot you can see that the
MC REFL fluctuations started getting larger
on Feb 24 just after midnight. Its been bad |
|
|
11109
|
Fri Mar 6 13:48:17 2015 |
dark kiwamu | Summary | IOO | triple resonance circuit | I was asked by Koji to point out where
a
schematic of the triple resonant circuit |
|
|
11112
|
Fri Mar 6 19:54:15 2015 |
rana | Summary | IOO | MC alignment not drifting; PSL beam is drifting | MC Refl
alignment follow up: the alignment from last |
|
|
11134
|
Wed Mar 11 19:15:03 2015 |
Koji | Summary | LSC | ROUGH calibration of the darm spectrum during the full PRFPMI lock | I made very rough calibration of
the DARM spectra before and after the transition
for the second lock on Mar 8. |
|
|
11147
|
Thu Mar 19 16:58:19 2015 |
Steve | Summary | IOO | MC alignment not drifting; PSL beam is drifting | Polaris mounts ordered.
|
|
|
11148
|
Thu Mar 19 17:11:32 2015 |
steve | Summary | SUS | oplev laser summary updated |
March 19, 2015 2
new JDSU 1103P, sn P919645 & P919639 |
|
|
11149
|
Fri Mar 20 10:51:09 2015 |
Steve | Summary | IOO | MC alignment not drifting; PSL beam is drifting | Are the two visible small srews holding
the adapter plate only?
If yes, it is the weakest point |
|
|
11158
|
Mon Mar 23 09:42:29 2015 |
Steve | Summary | IOO | 4" PSL beam path posts | To achive the same beam height each components
needs their specific post height.
|
|
|
11171
|
Wed Mar 25 18:27:34 2015 |
Koji | Summary | General | Some maintainance | - I found that the cable for the AS55 LO
signal had the shielding 90% broken. It was
fixed. |
|