| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
8473
|
Mon Apr 22 19:48:56 2013 |
Jenne | Update | 40m Upgrading | 4 pins enough? | Are 4 of these spring loaded pins enough?
I'm not sure how one pin can hold 2 lids
at each point. It seems like we need |
|
|
8475
|
Tue Apr 23 15:00:20 2013 |
Jenne | Update | 40m Upgrading | 4 pins enough? |
|
|
|
8481
|
Wed Apr 24 00:42:07 2013 |
Jenne | Update | SUS | PRMI locked, ITMX pitch OpLev ringing up | Koji is working on PRMI locking, and while
he was doing that I glanced at the oplevs'
spectra for the ITMs and PRM. |
|
|
8485
|
Wed Apr 24 14:36:06 2013 |
Jenne | Update | RF System | PD frequency response | I think you have the splitter that splits
the RF signal from the network analyzer in
the wrong place. |
|
|
8489
|
Thu Apr 25 03:35:28 2013 |
Jenne | Update | Locking | Angular motion does not explain RIN | Den made a nice elog about the PRMI RIN
that we see a few weeks ago: 8464.
The RIN that we're seeing is typically about |
|
|
8490
|
Thu Apr 25 04:10:09 2013 |
Jenne | Update | Locking | MICH_CTRL drifting away?? | Koji is elogging separately of his exploration
of different configurations. The lock
stretch that I'm looking at here uses the |
|
|
8498
|
Fri Apr 26 20:43:51 2013 |
Jenne | Update | LSC | Remeasuring the Schnupp asymmetry | [Jenne, Annalisa, with guidance from Koji]
We took data to remeasure the
Schnupp asymmetry, using the Valera method |
|
|
8499
|
Fri Apr 26 21:38:06 2013 |
Jenne | Configuration | RF System | PD frequency response | I was sad to see that there wasn't a photo
of the POX situation after the fiber work
was done on Thursday. |
|
|
8507
|
Mon Apr 29 18:53:03 2013 |
Jenne | Update | Electronics | 1pps timing fiber to OMC rack may be bent | While helping Riju out this afternoon,
I noticed that the timing fiber that goes
to the OMC rack (near the AP table) was bent, |
|
|
8510
|
Tue Apr 30 10:54:35 2013 |
Jenne | Update | SUS | ETMX restored | I'm not sure why or when it was tripped,
but I have restored the ETMX watchdog. |
|
|
8513
|
Tue Apr 30 21:24:15 2013 |
Jenne | Configuration | RF System | POX fiber laying | Nice work. That was a lot of effort,
but having done it so nicely will definitely
pay off, since it is now much harder to break |
|
|
8514
|
Tue Apr 30 22:40:57 2013 |
Jenne | Update | SUS | oplev XY-plots reflect new calibration | Back when Gabriele was here, he and I implemented
online calibration of the oplevs, into microradians.
A consequence of this is that all of the |
|
|
8515
|
Tue Apr 30 23:04:23 2013 |
Jenne | Configuration | RF System | Only 4 25m cables ordered | I have found in the depths of the elog
the (original?) list of fibers and lengths
that were decided upon: elog |
|
|
8516
|
Tue Apr 30 23:17:25 2013 |
Jenne | Update | LSC | PRCL LSC filters copied to CARM bank temporarily | Koji is working on PRMI locking with different
photodiodes, and rather than typing different
numbers into the input matrix, it is more |
|
|
8519
|
Wed May 1 14:42:45 2013 |
Jenne | Update | LSC | POP now has lens in front of PD |
|
|
|
8528
|
Fri May 3 17:32:59 2013 |
Jenne | Update | LSC | Remeasuring the Schnupp asymmetry | I have looked at / analyzed the Schnupp
data that Annalisa and I took last week,
as well as some more Yarm data that I took |
|
|
8532
|
Tue May 7 03:08:12 2013 |
Jenne | Update | | PRM yaw responsible for RIN | Koji spent some time earlier this evening
exploring where the excess RIN that we see
in the PRC is coming from. |
|
|
8533
|
Tue May 7 03:14:06 2013 |
Jenne | Update | SUS | PRM SUS_LSC violin (FM5) set to correct frequency | While looking over Koji's shoulder earlier,
I noticed the big peak in the PRM yaw spectrum
(and I was starting to get annoyed by the |
|
|
8534
|
Tue May 7 03:25:28 2013 |
Jenne | Update | IOO | MC WFS drifting?? | I'm not sure why, but starting ~3.5 hours
ago, the WFS seem to not be holding the MC
in optimal alignment. |
|
|
8537
|
Tue May 7 16:21:01 2013 |
Jenne | Summary | LSC | Error signal simulation in PRMI | I asked Gabriele why it looked like for
the PRCL sweep REFL 55 I&Q were zero
at zero, but for the MICH sweep only REFL55 |
8x |
|
8538
|
Tue May 7 17:13:30 2013 |
Jenne | Update | RF System | Ideal PRMI RF frequency | Koji asked me to look at what the ideal
RF modulation frequency is, for just the
PRMI case (no arms). If we had a perfect |
|
|
8557
|
Thu May 9 02:19:53 2013 |
Jenne | Update | Locking | 50% BS installed in POP path | Koji had the good idea of trying to measure
the motion of the POP beam, and feeding that
signal to PRM yaw to stabilize the motion. |
|
|
8558
|
Thu May 9 02:47:23 2013 |
Jenne | Update | PEM | T240 at corner station - cabling thoughts | Something that I want to look at is the
coherence between seismic motion and PRM
motion. Since Den has been working |
|
|
8559
|
Thu May 9 15:07:51 2013 |
Jenne | Update | General | Distances from CAD drawing | Since I keep asking Manasa to "measure"
distances off of the CAD drawing for me,
I thought I might just write them all down, |
|
|
8563
|
Mon May 13 17:24:38 2013 |
Jenne | Update | WienerFiltering | PRM YAW Wiener filtering | I have done a quicky offline Wiener filter
to check how much PRM yaw motion we can subtract
using a seismometer in the corner station. |
|
|
8564
|
Mon May 13 18:44:04 2013 |
Jenne | Update | Locking | prcl angular motion | I want to redo this estimate of where RIN
comes from, since Den did this measurement
before I put the lens in front of the POP |
|
|
8567
|
Mon May 13 23:05:51 2013 |
Jenne | Update | PEM | GUR1 masses recentered | [Evan, Jenne]
Evan brought the Guralp handheld
readout paddle and cables back from the ATF |
|
|
8568
|
Tue May 14 01:13:35 2013 |
Jenne | Update | 40m Upgrading | TRY realigned | Koji noticed that earlier this afternoon
the Yarm ASS was working, but then after
dinner it was no longer working. I |
|
|
8569
|
Tue May 14 01:56:20 2013 |
Jenne | Update | Green Locking | Xend Green tweaked | I locked the Xarm on green. At the
PSL table, I adjusted the steering mirror
to get the beam centered on the GTRX DC PD. |
|
|
8587
|
Thu May 16 01:41:31 2013 |
Jenne | Summary | IOO | FSS gain settings set |
|
|
|
8589
|
Thu May 16 04:46:37 2013 |
Jenne | Update | LSC | Kiwamu's sensing matrix measurement script revived | Kiwamu had an old set of scripts for
measuring
the sensing matrices, but they were |
|
|
8593
|
Thu May 16 23:48:39 2013 |
Jenne | Update | LSC | Kiwamu's sensing matrix measurement script revived | Koji locked the PRMI for me, and I took
some data. I haven't finished figuring
out what to do with it / writing a processing |
|
|
8600
|
Mon May 20 17:49:36 2013 |
Jenne | Update | LSC | PRMI sensing matrix - not high quality data | Just so we have some numbers, I did a by-hand
analysis of the PRMI sensing matrix numbers
I posted here in the elog the other day. |
|
|
8602
|
Mon May 20 18:50:22 2013 |
Jenne | Update | LSC | Kiwamu's sensing matrix measurement script revived | So that I don't have to do loop compensation
every time I measure a sensing matrix, I
have put (back) in notches into FM10 of all |
|
|
8603
|
Tue May 21 14:48:08 2013 |
Jenne | Update | LSC | PRMI sensing matrix - not high quality data | The PRMI sensing matrix, as measured last
Thursday, in a more readable format:
EDIT: DON'T Look at this |
|
|
8609
|
Tue May 21 18:22:18 2013 |
Jenne | Update | LSC | Sensing matrix scripts modified to include actuator calibration | The PRMI sensing matrix scripts have been
modified to output a sensing matrix which
is calibrated into units of counts/meter. |
|
|
8618
|
Wed May 22 17:29:34 2013 |
Jenne | Update | ASC | QPD for POP ASC tested | I fiddled around with the QPD that I'll
use to replace Koji's temporary razor blade
yaw sensor for detecting POP beam angular |
|
|
8619
|
Wed May 22 18:07:36 2013 |
Jenne | Update | LSC | Kiwamu's sensing matrix measurement script revived |
To avoid exciting at the PRM
violin mode frequency, I have changed all |
|
|
8620
|
Wed May 22 18:24:19 2013 |
Jenne | Update | SUS | Violin mode survey |
|
|
|
8621
|
Wed May 22 20:50:26 2013 |
Jenne | Update | LSC | Sensing matrix scripts don't calculate correctly | I am trying to re-analyze the data that
Koji took last night.
I think that my script is just pulling |
|
|
8623
|
Thu May 23 00:49:13 2013 |
Jenne | Update | LSC | LSC filters loaded |
|
|
|
8630
|
Thu May 23 14:45:08 2013 |
Jenne | Update | LSC | Sensing matrix scripts calculations make more sense now | I think I have most of the magnitude issues
figured out now.
First of all, the lockin outputs |
|
|
8632
|
Thu May 23 19:09:15 2013 |
Jenne | Update | LSC | Sensing matrix scripts modified to include actuator calibration | After fixing up my calculations in my scripts,
I have calculated the final PRMI sensing
matrix (as measured very close to the violin |
|
|
8633
|
Thu May 23 20:39:50 2013 |
Jenne | Update | LSC | PRMI sensing matrix measured at 580.1Hz | I locked the PRMI and remeasured the sensing
matrix, this time at 580Hz. The excellent
news here is that the matrix looks quite |
|
|
8634
|
Thu May 23 20:58:49 2013 |
Jenne | Update | PEM | PRM, ITMX optics tripped, restored |
M5.7
- 11km WNW of Greenville, California
Time2013-05-23 |
|
|
8635
|
Thu May 23 21:45:51 2013 |
Jenne | Update | LSC | Sensing matrix scripts now check for lockloss | A few more small mods to the sensing matrix
script. Now the script saves the data
after each measurement, so that in case you |
|
|
8640
|
Fri May 24 13:41:19 2013 |
Jenne | Update | LSC | PRMI sensing matrix measured at 580.1Hz | "0 degrees" is 0 degrees of demod
phase. I have now added the PD demod
phases to the plot: |
|
|
8642
|
Fri May 24 14:40:22 2013 |
Jenne | Update | LSC | PRMI sensing matrix: now what? |
|
|
|
8643
|
Fri May 24 14:44:34 2013 |
Jenne | Update | General | Rossa freezes all the time | I am getting tired of having to restart
Rossa all the time. She freezes almost
once per day now. Jamie has looked |
|
|
8644
|
Fri May 24 22:18:33 2013 |
Jenne | Update | LSC | PRMI sensing matrix: Got it! | Okay, I think I am finished with the sensing
matrix scripts!
I had the syntax for atan2() wrong, |
|