| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
10629
|
Tue Oct 21 18:40:46 2014 |
manasa | Update | General | End laser fiber setup | [Manasa, Diego]
This is our first time touching tables
for Frequency Offset Locking. |
|
|
10628
|
Tue Oct 21 17:44:28 2014 |
jamie | Omnistructure | Computer Scripts / Programs | new version of cdsutils (351) installed | I just installed cdsutils r351 at /ligo/apps/linux-x86_64/cdsutils.
It should be available on all workstations.
It includes a bunch of bug fixes |
|
|
10627
|
Tue Oct 21 00:38:40 2014 |
ericq | Update | LSC | sweep + RMS as uncertainty |
|
|
|
10626
|
Mon Oct 20 17:50:30 2014 |
Jenne | Update | LSC | CARM W/N TFs (Others were all wrong!) | I realized today that I had been plotting
the wrong thing for all of my transfer functions
for the last few weeks! |
7x |
|
10625
|
Fri Oct 17 17:52:55 2014 |
Jenne | Update | LSC | RAM offsets | Last
night I measured our RAM offsets and looked
at how those affect the PRMI situation. |
16x |
|
10624
|
Fri Oct 17 16:54:11 2014 |
jamie | Update | CDS | Daqd "fixed"? |
|
|
|
10623
|
Fri Oct 17 15:17:31 2014 |
jamie | Update | CDS | Daqd "fixed"? | I very tentatively declare that this particular
daqd crapfest is "resolved" after
Jenne rebooted fb and daqd has been running |
|
|
10622
|
Fri Oct 17 13:19:48 2014 |
Jenne | Update | LSC | POP22 ?!?! | We've seen this before, but we need to
figure out why POP22 decreases with decreased
CARM offset. If it's just a demod phase |
|
|
10621
|
Fri Oct 17 03:05:00 2014 |
ericq | Update | LSC | DARM locked on DC Transmission difference | I've
been able to repeatedly get off of ALS and
onto (TRY-TRX)/(TRY+TRX). Nevertheless, lock |
|
|
10620
|
Thu Oct 16 22:35:05 2014 |
rana | Update | LSC | CARM W/N TFs | In my last CARM loop modelling, all of
the plots are phony, so don't trust them.
The invbilinear function inside of StefanB's |
|
|
10619
|
Thu Oct 16 21:20:59 2014 |
rana | Update | LSC | misleading modelling | I think these are all very helpful
and interesting plots. We should see some
better performance using either of the DC |
|
|
10618
|
Thu Oct 16 16:21:42 2014 |
ericq | Update | LSC | Interim DARM Signal | I've added
(TRX-TRY)/(TRX+TRY) to the DC DARM sweep
plots, and it looks like an even better candidate. |
|
|
10617
|
Thu Oct 16 12:22:43 2014 |
ericq | Update | CDS | Daqd segfaulting again | I've been trying to figure out why daqd
keeps crashing, but nothing is fixed yet.
I commented out the line in /etc/inittab |
|
|
10616
|
Thu Oct 16 03:18:48 2014 |
Jenne | Update | CDS | Daqd segfaulting again | The daqd
process on the frame builder looks like it |
|
|
10615
|
Thu Oct 16 03:13:23 2014 |
Jenne | Update | LSC | PRMI on REFL165, and more | The first thing I looked at tonight
was locking the PRMI on REFL 165.
I locked the PRMI (no arms), and |
|
|
10614
|
Wed Oct 15 22:39:17 2014 |
Jenne | Update | LSC | The Plan | [Rana, Jenne]
We're summarizing the discussions
of the last few days as to the game plan |
|
|
10613
|
Wed Oct 15 20:10:29 2014 |
ericq | Update | LSC | Interim DARM Signal | I've done
some preliminary modeling to see if there
is a good candidate for an |
7x |
|
10612
|
Wed Oct 15 19:56:38 2014 |
Jenne | Update | LSC | Which side of optical spring are we on? Meas vs Model | I have plotted measured data from
last night (elog
10607) with a version of the result from |
|
|
10611
|
Wed Oct 15 17:18:10 2014 |
Jenne | Update | Computer Scripts / Programs | Dataviewer fix with Ubuntu 12.04 |
I have modified the Dataviewer
launcher (which runs when you either click |
|
|
10610
|
Wed Oct 15 17:09:49 2014 |
manasa | Update | General | Diode laser test preparation | [EricG, manasa]
The He-Ne laser oplev setup was swapped
with a fiber-coupled diode laser from W Bridge. |
|
|
10609
|
Wed Oct 15 13:38:33 2014 |
Jenne | Update | LSC | CARM W/N TFs | Here are the same plots, but the legend
also includes the arm power that we expect
at that CARM offset. |
7x |
|
10608
|
Wed Oct 15 02:59:04 2014 |
rana | Update | LSC | CARM W/N TFs | In my previous elog in this thread,
I showed the CARM OLG given some new digital
filters and the varying CARM plant (spring |
|
|
10607
|
Wed Oct 15 02:58:03 2014 |
Jenne | Update | LSC | Which side of optical spring are we on? | Some measurements. Unclear meaning.
We tried both positive and negative |
|
|
10606
|
Tue Oct 14 23:44:42 2014 |
diego | Update | Computer Scripts / Programs | Rossa and Allegra wiped, Ubuntu 12.04 installed | Allegra and Rossa wiped and updated to
Ubuntu 12.04.5 by me and Ericq; the following
procedure was followed: |
|
|
10605
|
Tue Oct 14 17:38:31 2014 |
ericq | Update | Computer Scripts / Programs | Rossa and Allegra wiped, Ubuntu 12.04 installed | When I came in, Rossa was booted to Ubuntu
10. I tried rebooting to select 12, but couldn't
ever successfully boot again. Since Diego |
|
|
10604
|
Mon Oct 13 21:59:47 2014 |
rana | Update | Computer Scripts / Programs | Which side of optical spring are we on? (No progress) |
Since no one was here, I started
the Ubuntu 10 - 12 upgrade on Rossa. It didn't |
|
|
10603
|
Mon Oct 13 21:20:56 2014 |
Jenne | Update | LSC | Which side of optical spring are we on? (No progress) | [Jenne, Diego]
In order to distinguish between the
spring and antispring sides of the CARM resonance, |
|
|
10602
|
Mon Oct 13 17:09:38 2014 |
ericq | Update | CDS | Frame builder is mad |
This CPU load may have been me deleting
some old frame files, to see if that would |
|
|
10601
|
Mon Oct 13 16:57:26 2014 |
Koji | Update | CDS | Frame builder is mad | CPU load seems extremely high. You need
to reboot it, I think
controls@fb /proc 0$ cat loadavg |
|
|
10600
|
Mon Oct 13 16:08:49 2014 |
Jenne | Update | CDS | Frame builder is mad | I think the daqd process isn't running
on the frame builder.
|
|
|
10599
|
Mon Oct 13 14:44:52 2014 |
Steve | Update | VAC | RGA scan pd78 -day 13 | Our first RGA scan since May 27,
2014 elog10585
The Rga is still warming up. |
|
|
10598
|
Mon Oct 13 12:01:28 2014 |
ericq | Update | LSC | Which side of optical spring are we on? | I went back into the DQ channels
to look at the TF from AO injection to REFLDC
(which is easy to do with this kind of noise |
|
|
10597
|
Fri Oct 10 14:41:04 2014 |
Steve | Update | VAC | Power outage II & recovery |
|
|
|
10596
|
Fri Oct 10 14:27:44 2014 |
Steve | Update | CDS | c1Vac1 and c1vac2 reboot was a failure |
|
|
|
10595
|
Fri Oct 10 03:25:11 2014 |
Jenne | Update | LSC | Which side of optical spring are we on (simulation) | I have a simulated version of the differences
that we expect to see between the 2 different
sides of the CARM resonance. The point |
10x |
|
10594
|
Fri Oct 10 03:05:09 2014 |
ericq | Update | LSC | Which side of optical spring are we on? | I made some measurements to try and
see if any difference could be seen with
different CARM offset signs. |
|
|
10593
|
Fri Oct 10 00:20:37 2014 |
rana | Update | LSC | CARM W/N TFs |
Assuming that these Watts/Newtons
TFs are correct, I've modeled the resulting |
|
|
10592
|
Thu Oct 9 19:14:04 2014 |
ericq | Update | General | Power outage II & recovery | I touched up the PMC alignment.
While bringing back the MC, I realized
IOO got a really old BURT restore again... |
|
|
10591
|
Thu Oct 9 18:30:59 2014 |
Jenne | Update | LSC | CARM W/N TFs | Okay, here (finally) is the optickle version.
I have the antispring case, starting
at 501pm and going roughly every 10pm down |
6x |
|
10590
|
Thu Oct 9 17:33:28 2014 |
Steve | Update | VAC | Power outage II & recovery |
|
|
|
10589
|
Thu Oct 9 16:31:53 2014 |
ericq | Update | LSC | CARM W/N TFs | In my previous simulation results, I've
always plotted W/m, which isn't exactly straightforward.
We often think about the displacement that |
|
|
10588
|
Thu Oct 9 13:29:14 2014 |
Jenne | Update | PSL | Power outage II & recovery |
|
|
|
10587
|
Thu Oct 9 11:56:35 2014 |
Steve | Update | VAC | Power outage II & recovery |
|
|
|
10586
|
Thu Oct 9 10:52:37 2014 |
manasa | Update | General | Power outage II & recovery | Post 30-40min unexpected power outage this
morning, Steve checked the status of the
vacuum and I powered up Chiara. |
|
|
10585
|
Wed Oct 8 15:31:31 2014 |
Jenne | Update | CDS | Computer status | After the Great Computer Meltdown of 2014,
we forgot about poor c0rga, which is why
the RGA hasn't been recording scans for the |
|
|
10584
|
Wed Oct 8 08:46:57 2014 |
Steve | Update | VAC | VAT valves actuator lubricant |
|
|
|
10583
|
Wed Oct 8 03:49:42 2014 |
Jenne | Update | LSC | PRFPMI, other sign of CARM offset | Other thoughts from talking with Rana earlier:
Is it possible to suppress
CARM motion enough that we can use just a |
|
|
10582
|
Wed Oct 8 03:37:44 2014 |
ericq | Update | LSC | PRFPMI, other sign of CARM offset | [ericq, Jenne]
We attempted some of the same old
CARM offset reduction tonight, but from the |
|
|
10581
|
Wed Oct 8 03:20:46 2014 |
Jenne | Update | LSC | Do we need AO for acquisition? | As part of trying to determine whether
we require the AO path for lock acquisition,
or if we can survive on just digital loops, |
|
|
10580
|
Tue Oct 7 19:40:58 2014 |
ericq | Update | LSC | CM, REFL11 Wiring | I've changed the LSC rack wiring a little
bit, to give us some flexibility when it
comes to REFL11. |
|