ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
10363
|
Mon Aug 11 21:03:48 2014 |
ericq, rana | Summary | IOO | MC demod measurement | We measured
the TF of the MC Demod board today. |
|
|
10364
|
Mon Aug 11 22:07:31 2014 |
Koji | Summary | IOO | MC demod measurement | SCLF-5!? It's surprising as the cut off
of the OLTF is just above 1Hz. cf
this entry |
|
|
10365
|
Mon Aug 11 23:32:54 2014 |
ericq | Summary | IOO | MC demod measurement | Here's the magnitude plot of the board
TF. As mentioned above, this was done with
Marconi+Scope, so we were not able to get |
|
|
10366
|
Mon Aug 11 23:50:38 2014 |
rana | Configuration | Wiki | DokuWikis are back up |
|
|
|
10367
|
Tue Aug 12 02:09:39 2014 |
ericq | Update | General | Reasonable alignment restored | I took over the IFO, after Jenne's locking
efforts, which included manual alignment,
since the ASS was doing bad things. |
|
|
10368
|
Tue Aug 12 13:31:58 2014 |
Jenne | Update | PEM | Seismometer cables in place, ready for sensors | [TaraV, Jenne]
The short cable from the slab to
the sensor has been assembled and installed |
|
|
10369
|
Tue Aug 12 14:29:01 2014 |
ericq | Update | General | Reasonable alignment restored |
|
|
|
10370
|
Tue Aug 12 18:20:13 2014 |
ericq | Update | IOO | FSS box TFs | I made some measurements of the FSS box
today, to have TFs for a loop model, but
also to see what the difference between the |
|
|
10371
|
Tue Aug 12 23:07:24 2014 |
Harry | Update | General | PSL Telescope | I put the PSL telescope in place, and started
coupling to it.
Unfortunately, I was only able to |
|
|
10372
|
Wed Aug 13 03:03:37 2014 |
ericq | Update | General | Green beatnote troubles | [Jenne, Rana, ericq]
No luck locking tonight, as spent
a while trying to figure out the complete |
|
|
10373
|
Wed Aug 13 10:49:39 2014 |
Harry | Update | General | Weekly Update | In the past week, I designed and
assembled coupling telescopes for the PSL
and Y Arm Lasers |
|
|
10374
|
Wed Aug 13 10:50:04 2014 |
Andres | Update | IMC | Calculation for the input mode cleaner | Calculation for the input mode
cleaner
I have been working on the
calculation for the input mode cleaner. I |
|
|
10375
|
Wed Aug 13 13:08:24 2014 |
rana | Update | IMC | Calculation for the input mode cleaner | Can you please give us some more details
on how this design was decided upon? What
were the design considerations? |
|
|
10376
|
Wed Aug 13 16:12:55 2014 |
Harry | Update | General | FOL Layout Diagram | Per Q's request, I've made up a diagram
of the complete FOL layout for general reference.
|
|
|
10377
|
Wed Aug 13 17:37:43 2014 |
Jenne | Update | General | Game plan | |
|
|
10378
|
Wed Aug 13 19:23:09 2014 |
Jenne | Update | LSC | PSL, Aux laser mode hop check | This afternoon Q helped me put in some
temporary PDs for checking for any mode hopping
behavior in our 3 main lasers. |
|
|
10379
|
Wed Aug 13 22:01:57 2014 |
rana | Update | IMC | Calculation for the input mode cleaner | Nic,
Andres, and I discussed some more about the
MC WFS project today. We want |
|
|
10380
|
Wed Aug 13 23:08:17 2014 |
rana | Update | IOO | FSS box TFs | As EQ pointed out recently, we're injecting
into the FSS error point just after an RF
pi filter, but before the VGA. We wondered |
|
|
10381
|
Wed Aug 13 23:58:49 2014 |
rana | HowTo | Computer Scripts / Programs | HP8591E spectrum analyzer remote scan |
|
|
|
10382
|
Thu Aug 14 02:51:46 2014 |
Jenne | Update | General | Game plan | [Jenne, Rana]
* Decided that earlier mode hop scan
won't give us the information that we were |
|
|
10383
|
Thu Aug 14 14:58:03 2014 |
Jenne | Update | General | Updated game plan | |
|
|
10384
|
Thu Aug 14 15:10:47 2014 |
Andres | Update | IMC | Calculation for the input mode cleaner |
|
|
|
10385
|
Thu Aug 14 15:42:29 2014 |
Koji | Update | General | Updated game plan | - ALS
End PDH UGF improvement / post mixer
LPF investigation (with in 2 weeks) |
|
|
10386
|
Thu Aug 14 15:51:37 2014 |
Jenne | Update | General | Updated game plan |
|
|
|
10387
|
Thu Aug 14 18:02:11 2014 |
Koji | Update | General | Updated game plan | Got the idea of ASC.
- Oplevs for PR2, PR3 => PR2 seems
OK. PR3 almost impossible. well |
|
|
10388
|
Thu Aug 14 18:05:05 2014 |
Jenne | Update | General | Updated game plan |
|
|
|
10389
|
Thu Aug 14 18:10:46 2014 |
Harry | Update | General | Fiber Temperature Effects Setup | Purpose
We want to characterize the sort
of response the fibers have to temperature |
|
|
10390
|
Thu Aug 14 18:31:45 2014 |
ericq | Update | LSC | LSC Modeling Update | Based on the game plan, I have created
a slew of updated pretty plots about our
signals and loops. |
7x |
|
10391
|
Thu Aug 14 19:23:25 2014 |
rana | HowTo | IOO | How do I set the FSS offset to make the PZT voltage start at the right place? | When the IMC locks, we want the FAST
OUT of the TTFSS box to be close to zero
volts. We also want the control signal from |
|
|
10392
|
Thu Aug 14 19:33:00 2014 |
Jenne | Configuration | IOO | Moved MC2 spot | Last night, and again just now, I used
the ./MC2_spot_[direction] scripts to center
the MC2 spot on the trans QPD. The |
|
|
10393
|
Thu Aug 14 20:52:36 2014 |
rana | Update | Wiki | Violin Mode table added to Wiki | Mech
Resonance Wiki
I've updated the wiki by trawling |
|
|
10394
|
Thu Aug 14 22:16:02 2014 |
Jenne | Update | SUS | Violin Mode filters for ETMs | The instigator of this was that we were
seeing ring-ups of ETMs during our ALS locks
this evening. We measured the ETMY |
|
|
10395
|
Thu Aug 14 22:31:12 2014 |
Jenne | Update | LSC | TRY gets mystery offset | I don't know why, but TRY has somehow gotten
a 0.3 count offset in the last hour.
Rana and I are witnesses for each |
|
|
10396
|
Thu Aug 14 22:58:59 2014 |
rana, jenne | Summary | Green Locking | ALS DIFF tuning | We've been having trouble tuning
the ALS DIFF matrix. Trying to see if the
MC2 EXC can be cancelled in ALS DARM by adjusting |
|
|
10397
|
Thu Aug 14 23:19:49 2014 |
rana | Summary | LSC | ETM Violin fundamental filters moved to LSC | We used to do violin mode and test
mass body mode notches in the SUS-LSC filter
modules. Now we want them balanced in the |
|
|
10398
|
Fri Aug 15 01:31:44 2014 |
Jenne | Update | ASC | POP QPD to ETMs model wiring complete | I have added a few things to the ASS model,
and the ASC sub-block, so that we can send
POP QPD information down to the ETMs for |
|
|
10399
|
Fri Aug 15 02:05:55 2014 |
Jenne | Update | LSC | ALS in-loop spectra | Not sure why, but Rana and I didn't
see the super high Xarm noise with ALS that
we reported last night (elog |
|
|
10400
|
Fri Aug 15 13:29:31 2014 |
Jenne | Update | General | Game plan: 15 Aug | |
|
|
10401
|
Fri Aug 15 14:09:21 2014 |
Jenne | Update | LSC | TRY mystery offset gone | Again unknown, but about 6 hours ago (so
~8am) the offset disappeared.
Here's a 1-day trend: |
|
|
10402
|
Fri Aug 15 14:35:57 2014 |
ericq | Update | LSC | TRY mystery offset gone | One question answered, but another raised.
The offset came from LSC-TRY switching to
the ETMY-QPD signal from ETMY-TRY (Hi gain |
|
|
10403
|
Fri Aug 15 17:24:44 2014 |
Harry | Update | General | Fiber Temp. | Earlier today Q and I somewhat resurrected
my old PER measurement setup so I could run
the temperature characterization experiment. |
|
|
10404
|
Fri Aug 15 20:26:37 2014 |
ericq | Update | General | Game plan |
|
|
|
10405
|
Fri Aug 15 20:38:17 2014 |
ericq | Update | General | ELOG dump | A few things that I have neglected
to ELOG yet:
scripts/offsets/LSCoffsets |
|
|
10406
|
Mon Aug 18 09:42:50 2014 |
Koji | Summary | IOO | MCREFL PD charcterization | Riju did the
measurement of the MCREFL PD.
I found data files in her directory |
|
|
10407
|
Mon Aug 18 18:33:57 2014 |
ericq | Update | Green Locking | Yarm Green PDH | So far today, I've been working with the
Y-end green PDH locking. Using a SR560 to
roll off the AG4395A output to take a loop |
|
|
10408
|
Tue Aug 19 01:01:36 2014 |
Jenne, Rana | Update | Green Locking | Yarm Green PDH | [ Rana, Jenne]
We remeasured the Yend PDH box.
When we first started, the green |
|
|
10409
|
Tue Aug 19 18:32:40 2014 |
ericq | Update | Green Locking | Yarm Green PDH | Heading to dinner, going to come back for
more green fun, but here's a quick update:
Xarm Peak-to-Peak of the PDH signal |
|
|
10410
|
Tue Aug 19 21:40:44 2014 |
Andres | Update | IMC | New Optical Setup for the IMC | IMC
Calculation and Setup
I have been working in the calculation |
11x |
|
10411
|
Tue Aug 19 23:11:15 2014 |
Jenne | Update | Green Locking | Yarm Green PDH |
Here is a plot of last night's
data with both the control and the error |
|
|
10412
|
Wed Aug 20 02:38:41 2014 |
Jenne | Update | Green Locking | Yarm Green PDH - requirement |
|
|