| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
9460
|
Thu Dec 12 21:30:52 2013 |
Jenne | Update | ASC | PRMI-relevant oplevs centered | The ITM oplevs were pretty close to the
edge of their ranges, and none of the oplevs
have been centered in a while, so I centered |
|
|
9459
|
Thu Dec 12 21:23:15 2013 |
ericq | Update | Green Locking | Better Xarm OLTF | With the newly repaired PDH board, I spent
some time with the x arm green PDH loop.
I found it SO MUCH EASIER to measure the |
|
|
9458
|
Thu Dec 12 17:22:07 2013 |
Steve | Update | General | rack power supplies checked | Instrument rack power supplies checked
and labeled at present loads.
|
8x |
|
9457
|
Thu Dec 12 14:57:01 2013 |
Koji | Update | IOO | IMC servo inspection | In order to accomplish CARM control with
the PSL laser frequency, we use two actuators.
One is the longitudinal direction |
|
|
9456
|
Thu Dec 12 00:47:45 2013 |
Den | Update | LSC | locking activity | Jenne, Den
Today we worked on PRM angular servos
and Y-arm ALS stabilization. |
|
|
9455
|
Thu Dec 12 00:21:04 2013 |
Koji | Update | Green Locking | X end PDH box oscillation issue solved (Re: screwed up the end PDH box) | What
a such long pain we suffered.
After more than three years from |
|
|
9454
|
Tue Dec 10 17:27:47 2013 |
Jenne | Update | Treasure | Baby oplev LQR designed loop | I *finally* figured out how to bend Matlab
to my will, and close a very simple oplev
loop using LQR technology. |
|
|
9453
|
Tue Dec 10 15:13:55 2013 |
Koji | Update | IOO | IMC servo inspection | Yesterday evening I inspected at IMC servo
as a preparation of the CM servo recommissioning.
More details to come. |
|
|
9452
|
Tue Dec 10 10:07:01 2013 |
Steve | Update | IOO | more beam traps | New razor beam dump installed to
trap reflected beam of the input vacuum window.
|
|
|
9451
|
Mon Dec 9 11:44:08 2013 |
Steve | Update | endtable upgrade | ETMY optable got new beam dump | Aluminum shield replaced by razor beam
dump. |
|
|
9450
|
Sat Dec 7 19:29:14 2013 |
Koji | Update | CDS | MEDM/ADL: replace rectangle with specified objects | In order to unify the theme for MEDM screens,
I'll have to make many combinations of rectangles,
polygons, and invisible related-screen buttons. |
|
|
9449
|
Fri Dec 6 21:38:27 2013 |
Koji | Update | LSC | CDS related activities for LSC | I worked on the CDS related stuffs for
LSC yesterday and today.
|
|
|
9448
|
Fri Dec 6 15:57:41 2013 |
Steve | Update | IOO | beam dumps for PSL pointing monitoring |
|
|
|
9447
|
Fri Dec 6 12:45:51 2013 |
ericq | Update | Green Locking | Green PDH Characterization | Yesterday, made a slew of measurements
on the X-arm when locked on green. By tweaking
the temperature loop offset and the green |
|
|
9446
|
Fri Dec 6 10:03:07 2013 |
Steve | Update | SUS | IR effect on MC sensors only |
|
|
|
9445
|
Thu Dec 5 16:20:26 2013 |
Steve | Update | CDS | glitches are gone |
|
|
|
9444
|
Thu Dec 5 12:20:09 2013 |
Jenne | Update | CDS | fixing c1mcs timing - go for it |
|
|
|
9443
|
Thu Dec 5 11:06:43 2013 |
Steve | Update | Cameras | viewport video ccd cameras are all covered |
|
|
|
9442
|
Wed Dec 4 21:41:09 2013 |
ericq | Update | Green Locking | Green PDH Characterization | My job right now is to characterize
the green PDH loops on each arm. Today, Jenne
took me around and pointed at the optics |
|
|
9441
|
Wed Dec 4 21:33:24 2013 |
Koji | Update | CDS | c1scy time-over issue mitigated | c1scy had frequent time-over. This caused
the glitches of the OSEM damping servos.
Today Eric Q was annoyed by the glitches |
|
|
9440
|
Wed Dec 4 15:43:13 2013 |
Jenne | Summary | LSC | Put LSC DAQ channels back | Last week, Koji cleaned up the LSC model
to make it much more readable, while he was
working on piping the ALS signals to the |
|
|
9439
|
Wed Dec 4 14:16:42 2013 |
Jenne | Update | LSC | PRFPMI flashes on transmission QPDs | 2 weeks ago I took some data, and remembered
today at the 40m meeting that I hadn't posted
it. Bad grad student. |
|
|
9438
|
Wed Dec 4 13:37:34 2013 |
Jenne | Update | CDS | c1auxex down again |
|
|
|
9437
|
Wed Dec 4 12:02:39 2013 |
Koji | Update | CDS | FB restored | Now
FB is fixed: daqd and nds are running
When I rebooted FB, I noticed |
|
|
9436
|
Tue Dec 3 17:08:06 2013 |
Koji | Update | CDS | computer problems | It seems that the front fan unit was running
at the full speed. The fan itself seems still
OK. |
|
|
9435
|
Tue Dec 3 07:42:23 2013 |
Steve | Update | CDS | c1iscex timing problem mysteriously disappears??? (thanksgiving miracle???) |
|
|
|
9434
|
Mon Dec 2 17:05:13 2013 |
Jenne | Update | CDS | c1iscex timing problem mysteriously disappears??? (thanksgiving miracle???) | Steve was trying to do something to it
this morning, but I'm not exactly clear on
what it was. Maybe that helped? |
|
|
9433
|
Mon Dec 2 16:04:47 2013 |
Jamie | Update | CDS | c1iscex timing problem mysteriously disappears??? (thanksgiving miracle???) |
|
|
|
9432
|
Mon Dec 2 14:24:10 2013 |
Steve | Update | CDS | computer problems | Rack 1x6 is very noisy.
SunFire X4600 computer: FB
(directly below Megatron) has it's yellow |
|
|
9431
|
Sat Nov 30 23:50:28 2013 |
rana | Update | IOO | mode cleaner not locking |
|
|
|
9430
|
Wed Nov 27 18:31:26 2013 |
Koji | Summary | LSC | Adittion of the ALS error signals to the LSC input matrix | The
Phase tracker outputs (= ALS X/Y error signals)
are now conveyed to the LSC model. |
|
|
9429
|
Wed Nov 27 16:29:21 2013 |
Jenne | Update | CDS | Accidentally turned off SUS IO chassis | [Jenne, Koji]
I was trying to lock the Yarm, and
saw that I was not getting signals to go |
|
|
9428
|
Wed Nov 27 14:45:49 2013 |
Jenne | Update | CDS | timing problem at c1iscex IO chassis | [Koji, Jenne]
The new fiber arrived today, and
we tried it out. |
|
|
9427
|
Mon Nov 25 17:28:33 2013 |
Jenne | Update | CDS | timing problem at c1iscex IO chassis |
|
|
|
9426
|
Mon Nov 25 12:57:54 2013 |
Jamie | Update | CDS | timing problem at c1iscex IO chassis | There is definitely a timing distribution
malfunction at the c1iscex IO chassis.
There is no timing link between the "Master |
|
|
9425
|
Mon Nov 25 10:57:14 2013 |
Koji | Update | CDS | woes on the X-end hosts | This morning I came in the 40m then found
1) c1auxex was throwing out the same |
|
|
9424
|
Fri Nov 22 16:32:08 2013 |
Steve | Update | VAC | RGA scan at day 108 |
|
|
|
9423
|
Fri Nov 22 14:21:43 2013 |
Jamie | Update | Computer Scripts / Programs | DAQ? |
|
|
|
9422
|
Fri Nov 22 09:54:22 2013 |
Steve | Update | CDS | DAQ? | Jamie, I think the computers know that
you are away. c1lsc keeps going down.
The short time plots are correct. |
|
|
9421
|
Thu Nov 21 16:32:20 2013 |
Steve | Update | IOO | PMC needs a touch of love |
The PMC power degrading on
this 3 days plot. MC2 -T = 14,200 counts. |
|
|
9420
|
Thu Nov 21 10:24:50 2013 |
Koji | Update | SUS | beam dumps | You don't need the fourth glass piece on
the diamond beam dump. |
|
|
9419
|
Thu Nov 21 09:56:15 2013 |
Steve | Update | SUS | green glass beam dumps | Green
welding glass is used in these
Koji |
|
|
9418
|
Wed Nov 20 17:05:15 2013 |
Jenne | Update | LSC | Xend QPD and Whitening board replaced | [EricQ, Jenne]
We have put the Xend QPD back in
place, and centered it. The whitening |
|
|
9417
|
Wed Nov 20 16:05:52 2013 |
Jenne | Update | LSC | PRMI carrier locking, OpLev Check | [Jenne, EricQ]
We locked the PRMI on carrier again
today, after lunch. Following a suggestion |
|
|
9416
|
Wed Nov 20 01:10:38 2013 |
Jenne | Update | LSC | PRMI carrier locking | I have increased the gain of the MICH loop
to -100, and set FMs 2,3,7 to be triggered.
I have also increased the PRCL gain to 2. |
|
|
9415
|
Tue Nov 19 21:59:35 2013 |
manasa | Update | LSC | PRMI carrier locking |
|
|
|
9414
|
Tue Nov 19 21:28:05 2013 |
manasa | Update | LSC | PRMI carrier locking | Since we have never tried to lock PRMI
on carrier after the folding mirrors were
flipped, I tried to lock PRCL on carrier. |
|
|
9413
|
Tue Nov 19 17:47:17 2013 |
Jenne | Update | LSC | PRMI+2arms attempt | So far this afternoon, I have redone the
IFO alignment, locked both arms with ALS,
moved both arms off resonance, locked PRMI, |
|
|
9412
|
Tue Nov 19 15:04:14 2013 |
Jenne | Update | CDS | Can talk to AUXEY again | The ETMY sliders on IFO_ALIGN were white
again this morning, so I went down to the
Yend and pushed the RESET button on auxey. |
|
|
9411
|
Tue Nov 19 14:47:59 2013 |
manasa | Update | LSC | Green status |
|
|