| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
1426
|
Wed Mar 25 04:18:28 2009 |
Yoichi | Update | Locking | Tuesday Locking | After the new PO_DC PD was installed, I tweaked
several gains to make the locking scripts
work right.
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1425
|
Wed Mar 25 01:37:35 2009 |
rana, yoichi | Summary | IOO | No Reference Cavity Required | We were wondering if we need to have a reference
cavity. One possible reason to have one is
to reduce the free running
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|
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1424
|
Tue Mar 24 23:23:05 2009 |
rana | Update | LSC | New PO DC | We also found that the SPOB RF cable was going
through a splitter before going into the
SPOB demod board. The other
|
|
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1423
|
Tue Mar 24 19:55:24 2009 |
Jenne | Update | LSC | New PO DC | [Rana, Jamie, Jenne]
SPOB DC hasn't been so good lately,
so we installed a new PO DC PD on the PO |
|
|
1422
|
Tue Mar 24 13:54:49 2009 |
Jenne | Update | SUS | Op Levs Centered | ITMX, ITMY, BS, SRM, PRM op levs were all
recentered. ETM's looked okay enough
to leave as-is. |
|
|
1421
|
Tue Mar 24 13:10:07 2009 |
Alberto | Configuration | PSL | new mirror installed on the AP table | New flipping mirror installed on the AP
table on the beam path to the REFL199 PD.
If you're missing the double demod |
|
|
1420
|
Tue Mar 24 09:04:02 2009 |
steve | Update | SUS | 4.8 mag earthquake | SRM, ITMX, ETMX, ITMY and ETMY lost damping
at 4:55am this morning from 4.8 magnitude
earthquake. |
|
|
1419
|
Tue Mar 24 03:05:25 2009 |
Yoichi | Update | Locking | Locking tonight | MC1 issue:
The MC1 seems to be drifting still. I found
it was off from the SUS drift-mon reference |
|
|
1418
|
Mon Mar 23 15:50:44 2009 |
rana | Configuration | LSC | filters deleted, lsc rebooted | The LSC time had gone too high. I deleted
~20 filters and rebooted. CPU time came down
to 50 usec. |
|
|
1417
|
Sun Mar 22 23:16:41 2009 |
rana | DAQ | Computer Scripts / Programs | tpman restart | Could get testpoints but couldn't start excitations.
Restarted tpman on daqawg. Works now.
|
|
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1416
|
Sun Mar 22 22:47:58 2009 |
rana | Update | DMF | seisBLRMS compiled but still dying | Looks like seisBLRMS was restarted ~1 AM Friday
morning but only lasted for 5 hours. I just
restarted it on megatron;
|
|
|
1415
|
Sun Mar 22 22:39:24 2009 |
rana | Summary | LSC | Calibration of the ITM and ETM Actuation | I used the following procedure to calibrate
the ITMX actuation signal.
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|
|
1414
|
Fri Mar 20 15:54:29 2009 |
steve | Omnistructure | General | 480V crane power switch on MEZ | CES Mezzanine is beeing rebuilt to accommodate
our new neighbor: the 20ft high water slide...&
.jacuzzi |
|
|
1413
|
Fri Mar 20 15:37:58 2009 |
Kakeru | Update | oplevs | arm cavity oplev calibration |
I calibrated several oplevs with OSEM signal
as a confirmation of my fitting method the |
|
|
1412
|
Fri Mar 20 12:07:19 2009 |
Yoichi | Configuration | ASC | ETMY beam centering | I forgot to put this in the elog.
Last Sunday night, I centered the beam on
the ETMY because it was too low.
|
|
|
1411
|
Fri Mar 20 11:01:02 2009 |
steve | Update | PEM | particle counts are high | The outside particle counts for 0.5 micron
are 3 million this morning at 9am. Low clouds,
foggy condition with low inversion layer. |
|
|
1410
|
Thu Mar 19 10:45:43 2009 |
Yoichi | Configuration | IOO | A loose wire found for MC1 | I attached a 6-hour trend of the MC mirror
OSEM signals with the MC unlocked.
The drift of the MC1 is within 20 counts |
|
|
1409
|
Thu Mar 19 02:45:36 2009 |
Yoichi | Configuration | IOO | A loose wire found for MC1 | I found a loose connection of a wire in the
cross-connect between an ADC and the MC1
coil driver's UL bias input.
|
|
|
1408
|
Tue Mar 17 08:44:37 2009 |
Yoichi | Configuration | IOO | MC1 drift | I'm done with the MC1 drift measurement.
The result is attached. It is clear that
MC1 is in trouble. The small drifts in the |
|
|
1407
|
Mon Mar 16 15:19:52 2009 |
Osamu | DAQ | Electronics | SR785 | I borrowed SR785 to measure AA, AI noise
and TF. |
|
|
1406
|
Mon Mar 16 12:26:59 2009 |
Yoichi | Configuration | IOO | MC1 drift | There seems to be a large drift of MC1 even
when there is no WFS feedback.
The attached plot is an example a 20min trend. |
|
|
1405
|
Mon Mar 16 01:20:40 2009 |
rana | Configuration | IOO | MCWFS noise filtered on the SUS-MC | [SIZE=4][COLOR=darkgreen]Recently[/COLOR][/SIZE],
we noticed that the IOO-WFS system runs at
2048 Hz and sends its signals to the MC SUS
|
|
|
1404
|
Sun Mar 15 21:50:29 2009 |
Kakeru, Kiwamu, Osamu | Update | Computers | Some computers are rebooted | We found c1lsc, c1iscex, c1iscey, c1susvme,
c1asc and c1sosvme are dead.
We turned off all watchdogs |
|
|
1403
|
Sat Mar 14 22:53:12 2009 |
Kakeru | Update | oplevs | arm cavity oplev calibration | I finished a calibration of optical levers.
To calibrate oplevs, I locked appropriate |
|
|
1402
|
Fri Mar 13 22:07:14 2009 |
Yoichi | Update | Locking | Calibrated XARM error signal spectrum | Of course I made a mistake.
I put a pole at 1525Hz whereas it should
have been a zero.
|
|
|
1401
|
Fri Mar 13 20:23:37 2009 |
Yoichi | Update | LSC | AO path transfer function with X-arm locked | I measured the AO path transfer function while
the X-arm is locked with the POX PDH signal.
The POX-I signal was already connected to |
|
|
1400
|
Fri Mar 13 19:26:09 2009 |
Yoichi | Update | DMF | seisBLRMS compiled | I compiled seisBLRMS.
The tricks were the following:
(1) Don't add path in a deployed |
|
|
1399
|
Fri Mar 13 05:16:21 2009 |
Yoichi | Update | Locking | Locking update | Yoichi, Osamu,
With adjustments of the loop gains during |
|
|
1398
|
Thu Mar 12 20:59:04 2009 |
Kakeru | Update | IOO | MC drift is terrible | After Rana went for his dinner, I aligned
periscope to make the MC output 3.2 (Attachment
1).
|
|
|
1397
|
Thu Mar 12 19:11:27 2009 |
rana | Update | IOO | MC drift is terrible | Kakeru, Rana, Yoichi
We used the [SIZE=4][COLOR=purple][B]SUS |
|
|
1396
|
Thu Mar 12 18:48:37 2009 |
Yoichi | Update | IOO | MC aligned but ... | After the MZ alignment, I aligned the MC with
the periscope mirrors.
It looked like the MC mis-alignment was mainly |
|
|
1395
|
Thu Mar 12 18:44:02 2009 |
Yoichi | Update | PSL | MZ aligned | The MC lost the alignment somehow this afternoon.
So I thought it was good time to touch the
MZ because I had to align the MC using the |
|
|
1394
|
Thu Mar 12 15:57:53 2009 |
Yoichi | Update | IOO | MC drift is terrible | Yoichi, Osamu,
Last night's locking work was totally interrupted |
|
|
1393
|
Thu Mar 12 02:18:42 2009 |
Yoichi | Update | Locking | MC_I spectra (RF_AM) | I took several spectra of MC_I signal (see
attm1).
|
|
|
1392
|
Thu Mar 12 00:29:39 2009 |
Jenne | Omnistructure | DMF | DMF being whiny again | [QUOTE]The seisBLRMS has been running on megatron
via an open terminal ssh'd into there from
allegra with matlab running.[/QUOTE]
|
|
|
1391
|
Wed Mar 11 23:41:33 2009 |
Kakeru, Yoichi | Update | IOO | WFS centering | We found the MC reflection was distorted
. And WFC beam went to upward of QPD
We recentered WFC beam and these |
|
|
1390
|
Wed Mar 11 22:57:48 2009 |
Yoichi | Update | Locking | Calibrated XARM error signal spectrum | I did a rough calibration of the XARM error
spectrum.
See the attached calibrated spectrum.
|
|
|
1389
|
Wed Mar 11 21:03:51 2009 |
Kakeru and Kiwamu | Update | IOO | PSL angle QPD | Kakeru and Kiwamu
We placed a QPD on the PSL bench
for PSL angle monitor. |
|
|
1388
|
Wed Mar 11 16:53:48 2009 |
Yoichi | Update | Locking | Junks in around kHz | Rana, Yoichi
Last night, we tried to find out the source |
|
|
1387
|
Wed Mar 11 16:41:22 2009 |
steve | Update | MOPA | spare NPRO power | The spare M126N-1064-700, sn 5519
of Dec 2006 rebuilt NPRO's power output
measured 750mW |
|
|
1386
|
Wed Mar 11 14:51:01 2009 |
Kakeru, Joe, Rob | Update | IOO | MC alignment | This morning, MC alignment was gone and
MC wasn't lock.
We checked old value of pitch, yaw, |
|
|
1385
|
Wed Mar 11 11:30:15 2009 |
josephb | Configuration | Cameras | | I modified the Video.db file used by c1aux
located in /cvs/cds/caltech/target/c1aux.
I added the following channels to |
|
|
1384
|
Wed Mar 11 04:33:57 2009 |
rana | Configuration | Computer Scripts / Programs | wild ndsproxy tclshexe | The ndsproxy tcl task on nodus was eating
up all the CPU and making the elog slow.
I killed it and restarted it. |
|
|
1383
|
Wed Mar 11 01:16:40 2009 |
rana | Summary | IOO | rogue trianglewave in the MC Servo offset slider | On Monday
evening, I ran this command: trianglewave
C1:IOO-MC_REFL_OFFSET 0 4 120 600;ezcawrite |
|
|
1382
|
Tue Mar 10 04:55:41 2009 |
Yoichi | Update | Locking | Locking: 3.7kHz large oscillation | Yoichi, Jenne, Alberto,
As I reported on the last Thursday, there |
|
|
1381
|
Mon Mar 9 23:55:38 2009 |
Osamu | DAQ | Computers | bscteststand and kami1 outside martian | This morning there was a confliction of
tpman running on fb40m and kami1. Alex fixed
it temporary but Rana suggested it was better |
|
|
1380
|
Mon Mar 9 23:13:22 2009 |
Yoichi | Update | Computer Scripts / Programs | tdsdata doesn't work |
|
|
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1379
|
Mon Mar 9 19:33:10 2009 |
rana | Update | DMF | seisBLRMS in temp condition | The seisBLRMS has been running on megatron
via an open terminal ssh'd into there from
allegra with matlab running. This |
|
|
1378
|
Mon Mar 9 19:27:16 2009 |
rana | Configuration | Computers | Move of the CLIO Digital Controls test setup | Because of the network interference
we've had from the CLIO system for the past
3-4 days, I asked the guys to remove |
|
|
1377
|
Mon Mar 9 17:11:38 2009 |
Alberto | Configuration | oplevs | optical levers centering | Yoichi, Alberto
this afternoon we centered the optical
levers for all the optics. |
|