| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
9293
|
Fri Oct 25 20:11:08 2013 |
Jenne | Update | LSC | MICH gain in PRMI lowered by factor of 2 | We were locking the PRMI, but it is very
rumbly today. I reduced the MICH servo
gain from -0.8 to -0.4 , and things seem |
|
|
9294
|
Fri Oct 25 21:28:49 2013 |
Masayuki | Update | LSC | REFL PDs spectrum | I measured the spectrum of the REFL165
output using AG4395A. As this entry
we put the directional coupler between REFL165 |
|
|
9295
|
Fri Oct 25 21:36:51 2013 |
Masayuki | Update | LSC | 'scope and spectrum analyser for REFL165 |
|
|
|
9296
|
Sat Oct 26 21:46:33 2013 |
RANA | Update | IOO | Mode Cleaner Tune-UP | The
MC had been unlocked for the last 4 hours
and was crying out to me so I gave it some |
|
|
9297
|
Sat Oct 26 22:48:55 2013 |
rana | Update | CDS | New/old CDS laptop for X-End | |
|
|
9298
|
Sun Oct 27 00:15:35 2013 |
RANA | Update | SUS | c1auxex | At some point tonight we lost our
CA connection to c1auxex (which is actually
the computer at the X End and controls the |
|
|
9299
|
Sun Oct 27 03:41:06 2013 |
rana | Update | SUS | ETMX violin mode | I thought it would be enough
to notch the fundamental and the first harmonic,
but sometime tonight the 2nd harmonic at |
|
|
9300
|
Sun Oct 27 19:19:42 2013 |
Den | Update | PEM | Seismometer status |
|
|
|
9301
|
Sun Oct 27 23:26:44 2013 |
rana | Update | PEM | Seismometer status | It would be nice if we could use
the existing seismometer cable and place
a 2-terminal temperature sensor within the |
|
|
9302
|
Mon Oct 28 12:53:23 2013 |
Jenne | Update | CDS | Farfalla and Asia added to Host Table in Wiki |
|
|
|
9303
|
Mon Oct 28 14:12:48 2013 |
manasa | Update | IOO | Mode Cleaner relocked |
|
|
|
9304
|
Mon Oct 28 14:24:01 2013 |
Masayuki | Update | LSC | 'scope and spectrum analyser for REFL165 |
I connected the 'scope between
REFL165 output and demod board input. I split |
|
|
9306
|
Mon Oct 28 21:33:55 2013 |
RANA | Update | IOO | Mode Cleaner Tune-UP |
8 day minute trend of some of the
IMC alignment signals. |
|
|
9307
|
Tue Oct 29 10:51:16 2013 |
Masayuki | Update | SUS | ETMY sensors compared to ETMX | [Steve, Masayuki]
We lowered the |
|
|
9308
|
Tue Oct 29 16:51:31 2013 |
Jenne | Update | CDS | LSC test points were used up | Masayuki was concerned that some LSC channels
were giving him all zeros. After seeing
the error in the terminal window running |
|
|
9311
|
Tue Oct 29 22:33:57 2013 |
rana | Update | SUS | ETMY sensors compared to ETMX |
|
|
|
9312
|
Wed Oct 30 00:02:25 2013 |
Jenne | Update | LSC | LSC demod boards need some thought | As we are meditating on things to look
at for PRMI + 2 arms, Rana brought up the
question of the demod board situation. |
|
|
9313
|
Wed Oct 30 01:22:56 2013 |
Jenne | Update | LSC | REFL 165 demod phase adjusted |
|
|
|
9314
|
Wed Oct 30 01:44:13 2013 |
Jenne | Update | LSC | MICH and PRCL gains adjusted (Config file saved) |
|
|
|
9315
|
Wed Oct 30 01:53:52 2013 |
Jenne | Update | IOO | Mode Cleaner relocked | The MC (mostly MC2) decided a few minutes
ago to move, so I put the SUSPIT and SUSYAW
numbers back where they were, and the tweaked |
|
|
9316
|
Wed Oct 30 03:33:17 2013 |
Rana | Update | LSC | LSC demod boards need some thought |
|
|
|
9317
|
Wed Oct 30 03:36:51 2013 |
Jenne | Update | LSC | MICH and PRCL UGFs change with ALS enabled | Masayuki was able to hold both arms off-resonance
with ALS long enough for me to lock the PRMI
(arms still held off resonance), and take |
|
|
9320
|
Wed Oct 30 16:46:17 2013 |
manasa | Update | IOO | MC aligned | MC has not been very happy since last night.
What I did to fix this:
1. Disabled autolocker and WFS and |
|
|
9321
|
Thu Oct 31 00:06:45 2013 |
masayuki | Update | Computer Scripts / Programs | cds fft,tf,offsets | I
wrote the scripts for cdsutils.
1. |
|
|
9322
|
Thu Oct 31 15:34:28 2013 |
manasa | Update | IOO | MC not happy since yesterday |
|
|
|
9323
|
Thu Oct 31 20:05:48 2013 |
RANA | Update | IOO | Mode Cleaner Tune-UP |
|
|
|
9325
|
Fri Nov 1 09:45:32 2013 |
Steve | Update | IOO | beam dumps to be find |
|
|
|
9330
|
Sat Nov 2 19:36:15 2013 |
Charles | Update | General | Possible misalignment? | I was working on the electronics
bench and what sounded like a huge truck
rolled by outside. I didn't notice anything |
|
|
9331
|
Sat Nov 2 22:49:44 2013 |
Charles | Update | ISS | CTN ISS Noise Suppression Requirement - Updated 10/27 | Previously in elog
8959, I gave a very simple method for
determining the noise suppression behavior |
7x |
|
9333
|
Mon Nov 4 09:03:21 2013 |
Steve | Update | PSL | PMC auto locker |
|
|
|
9334
|
Mon Nov 4 11:37:12 2013 |
Steve | Update | IOO | PSL output shutter installed |
The PSL shutter is reinstalled.The
base plate is delrin for isolation and the |
|
|
9336
|
Mon Nov 4 12:59:43 2013 |
Jenne | Update | IOO | MC alignment not so good after PSL output shutter installed |
|
|
|
9338
|
Mon Nov 4 15:46:17 2013 |
Jenne | Update | LSC | Thoughts and Conclusions from last week's PRMI+2arms attempt | 5:31pm - This is still a work in
progress, but I'm going to submit so that
I save my writing so far. I think |
12x |
|
9339
|
Mon Nov 4 17:08:23 2013 |
Jenne | Update | LSC | Thoughts on Transition to IR | Gabriele and I talked for a while on Wednesday
afternoon about ideas for transitioning to
IR control, from ALS. |
|
|
9340
|
Mon Nov 4 18:24:15 2013 |
Koji | Update | LSC | Thoughts on Transition to IR | You have the data. Why don't you
just calculate 1/SQRT(TRX)?
...yeah, you can calculate it but |
|
|
9341
|
Mon Nov 4 23:11:00 2013 |
Jenne | Update | LSC | Small updates to LSC screen | I made some small edits to the LSC screen.
* When I added columns for the new
AS110 PD, I had forgotten to make the Trigger |
|
|
9342
|
Tue Nov 5 00:39:43 2013 |
manasa | Update | IOO | IFO alignment tuning | Information acknowledged from Steve:
The last steering mirror mount for
IR on the PSL was swapped for a more robust |
|
|
9343
|
Tue Nov 5 08:44:21 2013 |
Steve | Update | IOO | after last steering mirror mount swap | The IOO Angle and IOO Position qpds
were recentered after this entry.
Suggested corrections in elog |
|
|
9344
|
Tue Nov 5 16:39:54 2013 |
Gabriele | Update | LSC | Thoughts on Transition to IR |
|
|
|
9345
|
Tue Nov 5 16:47:09 2013 |
Jenne | Update | LSC | End transmission QPDs | I think Steve is trying to align the end
transmission QPDs, since the arms are locked
nicely right now. I noticed that the |
|
|
9347
|
Tue Nov 5 17:12:34 2013 |
Steve | Update | LSC | centered qpds | Full list tomorrow: IP-Ang &
Pos, ETMY-T, ETMY-Oplev, ETMX-T, IOO-Ang
& Pos |
|
|
9349
|
Tue Nov 5 19:39:27 2013 |
Jenne | Update | LSC | OpLev time series | [Rana, Jenne]
We looked at the time series for
all the oplevs except the BS, from last Tuesday |
|
|
9350
|
Tue Nov 5 19:50:07 2013 |
manasa | Update | Electronics | IOO rack +/-5V power supplies | The power supply to the ADC box on the
IOO rack (that reads the beat I & Q signals)
was pulled out because it did not run through |
|
|
9351
|
Tue Nov 5 19:55:12 2013 |
rana | Update | SUS | oplev XY-plots reflect new calibration | I used the same OSEM SUSPIT/YAW method
as before to calibrate the ETMY optical
lever signals. They were off by a factor |
|
|
9352
|
Wed Nov 6 08:33:53 2013 |
Steve | Update | IOO | Poiting changes of PSL |
|
|
|
9354
|
Wed Nov 6 15:12:01 2013 |
Jenne | Update | CDS | FB not talking to LSC? | Something funny is going on with the framebuilder's
communication with the LSC machine.
This is a different failure mode |
|
|
9355
|
Wed Nov 6 15:57:22 2013 |
Jenne | Update | LSC | Power Supply solution | We have decided that, rather than replacing
the power source for the amplifiers that
are on the rack, and leaving the Thorlabs |
|
|
9356
|
Wed Nov 6 15:59:41 2013 |
manasa | Update | Electronics | IOO rack +/-5V power supplies |
|
|
|
9357
|
Wed Nov 6 17:21:58 2013 |
Jamit | Update | CDS | FB not talking to LSC? |
|
|
|
9358
|
Thu Nov 7 08:57:20 2013 |
Steve | Update | IOO | PSL pointing monitoring | The qpd sees the power drop as position
change.
The laser monitoring screen |
|