| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
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. |
|
|
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 |
|
|
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;
|
|
|
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 |
|
|
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. |
|
|
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. |
|
|
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 |
|
|
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
|
|
|
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.
|
|
|
1427
|
Wed Mar 25 09:55:45 2009 |
steve | Update | IOO | glitching sensors of MC | SUS-MC1_SENSOR_SIDE and SUS-MC2_SENSOR_UL
are glitching
Yesterday's 4.8mag earthquake at |
|
|
1428
|
Wed Mar 25 17:22:58 2009 |
Yoichi | Update | IOO | MC lock without FSS | I made 40k:4k passive filter in a POMONA box
and connected it to IN1 (not TEST IN1) of
the FSS box.
|
|
|
1429
|
Wed Mar 25 20:41:43 2009 |
Jenne | Update | IOO | Mode Cleaner Servo Board Transfer Functions (to be updated) | When all things fail (netgpibdata.py is
giving me weird data. When I plot the
data it has saved from the 4395A, it's some |
|
|
1430
|
Thu Mar 26 00:45:24 2009 |
Jenne | Update | IOO | Mode Cleaner Servo Board Transfer Functions (to be updated) |
|
|
|
1431
|
Thu Mar 26 04:01:24 2009 |
Yoichi | Update | PSL | FSS Open Loop Gain | Yoichi, Peter, Jenne
Attached is the open loop transfer function |
|
|
1432
|
Thu Mar 26 04:09:38 2009 |
Yoichi | Update | IOO | Single X arm lock spectra with different MC lock schemes | The attached plots show MC_F, FSS_FAST_F and
XARM IN/OUT spectra with different MC locking
modes.
|
|
|
1433
|
Thu Mar 26 04:27:26 2009 |
Yoichi | Update | Locking | 3.8kHz peak as a function of the arm power | During the power ramp-up, I actuated CARM
using ETMs and measured the transfer functions
to the PO_DC at several arm powers.
|
|
|
1434
|
Thu Mar 26 09:08:18 2009 |
Kakeru | Update | oplevs | arm cavity oplev calibration | I uploaded a document about my oplev calibration.
/cvs/cds/caltech/users/kakeru/oplev_calibration/oplev.pdf
|
|
|
1436
|
Fri Mar 27 02:50:54 2009 |
Yoichi | Update | Locking | DD demodulation phase suspicious | I noticed that the gain of PD6_Q (before the
phase rotation) was 0 whereas PD6_I gain
was 15.
|
|
|
1437
|
Fri Mar 27 15:05:42 2009 |
Yoichi | Update | IOO | MC glitch investigation | Attached plots are the result of the
MC1 trend measurement.
See the
attachment #1. The first two plots show the |
|
|
1438
|
Fri Mar 27 17:52:16 2009 |
Yoichi | Update | IOO | MC glitch investigation | Per Rob's suggestion, I put the probes
across the output resistors of the bias current
buffers instead of measuring the output voltage |
|
|
1439
|
Sun Mar 29 13:44:27 2009 |
steve | Update | SUS | ETMY sus damping restored | ETMY sus damping was found to be tripped.
It was retored.
All fluorecent light were turned |
|
|
1440
|
Sun Mar 29 17:54:41 2009 |
Yoichi | Update | SUS | MC1 drift investigation continued | The attached plots show the trend of the MC
OSEM signals along with the voltages across
the output resistors of the bias current |
|
|
1441
|
Mon Mar 30 09:07:22 2009 |
rana | Update | SUS | MC1 drift investigation continued | [COLOR=chocolate]Maybe we can temporarily
just disconnect the bias and just use the
SUS sliders for bias if there's enough range?[/COLOR] |
|
|
1444
|
Mon Mar 30 13:29:40 2009 |
Yoichi | Update | SUS | MC1 drift investigation continued | [quote][COLOR=chocolate]Maybe we can temporarily
just disconnect the bias and just use the
SUS sliders for bias if there's enough range?[/COLOR][/quote]
|
|
|
1445
|
Mon Mar 30 15:51:27 2009 |
steve | Update | Electronics | HP4291A left the lab to be repaired | Eric Gustafson is handling the old HP4291A
rehabilitation. Tarac picked both units up
today. |
|
|
1447
|
Tue Mar 31 09:42:32 2009 |
steve | Update | PEM | ETMY sus damping restored again | The Caltech gasoline storage tank is being
upgraded.
They are jack hammering and digging |
|
|
1448
|
Wed Apr 1 10:22:13 2009 |
steve | Update | VAC | RGA logging is working | Thanks to Joe B who made the SRS RGA working
with linux
Last data file logged at 2008 Oct |
|
|
1449
|
Wed Apr 1 15:47:48 2009 |
Yoichi | Update | Locking | 3.8kHz peak looks like a real optical response of the interferometer | Yoichi, Peter
To see where the 3.8kHz peak comes from, |
|
|
1450
|
Wed Apr 1 16:14:36 2009 |
Yoichi | Update | Locking | 3.8kHz peak does not change with SRC offset | Yoichi, Peter
We suspected that maybe the 3.8kHz peak is |
|
|
1452
|
Fri Apr 3 10:01:50 2009 |
steve | Update | VAC | rgascan with temp plot | Rga scan of day 231 since pumpdown pd66-m-d231
m stands for maglev pumping speed,
vacuum normal condition of valves, |
|
|
1454
|
Fri Apr 3 17:20:05 2009 |
Yoichi | Update | Locking | The 3.8kHz peak seems like the DARM RSE (not 100% sure though) | Yoichi, Kentaro,
Last night, we took several measurements |
|
|
1455
|
Mon Apr 6 19:09:15 2009 |
Jenne | Update | PEM | Old Guralp is hooked back up to the ADC | Old Guralp is hooked back up, the new one
is sitting next to it, disconnected for now. |
|
|
1456
|
Mon Apr 6 21:50:43 2009 |
rana | Update | LSC | Arm Locking via pushing MC2 | Inspired by our 'No Refcav' scheme here, I
was inspired to re-explore the idea of locking
the
|
|
|
1458
|
Wed Apr 8 02:47:42 2009 |
Yoichi | Update | Locking | Locking status | This is a summary of activities in the last
few nights, although there is not much progress.
|
|
|
1462
|
Thu Apr 9 11:27:19 2009 |
steve | Update | VAC | vac gauge reading problem | Cold cathode gauge CC4 is reading
normal.
CC1 is glitching, it is probably |
|
|
1463
|
Thu Apr 9 12:23:49 2009 |
pete | Update | Locking | tuning ETM common mode | Pete, Yoichi
Last night, we put the IFO in FP
Michelson configuration. We took transfer |
|
|
1467
|
Fri Apr 10 01:24:08 2009 |
rana | Update | Computers | allegra update (sort of) | I
tried to play an .avi file on allegra. In
a normal universe this would be easy, but |
|
|
1469
|
Fri Apr 10 04:54:24 2009 |
Yoichi | Update | Locking | REFL_DC for CARM | Suggested by Rob and Rana's simulation works,
I tried to use REFL_DC for the CARM error
signal.
|
|
|
1470
|
Fri Apr 10 18:11:18 2009 |
Jenne | Update | PSL | ISS has a bad cable? | [Rob, Jenne]
I noticed that the ISS Mean Value
and CS Saturation were both |
|
|
1471
|
Fri Apr 10 19:09:48 2009 |
Jenne | Update | PSL | PMC LO Calibration | I measured the RF LO output level from the
PMC's LO board which goes directly into the
LO input on the PMC Servo board. This goes |
|
|
1472
|
Fri Apr 10 19:10:53 2009 |
Jenne | Update | General | Xarm locked? | I don't know who left the X arm locked,
but I just ran the Align Full IFO script,
so everything is good in case Yoichi/someone |
|
|
1473
|
Sat Apr 11 00:45:41 2009 |
Yoichi | Update | PSL | PMC LO Calibration | [quote]
I then changed the RF Output Adjust slider
in increments of 0.5, and measured the peak-to-peak |
|
|
1475
|
Sun Apr 12 19:27:20 2009 |
rana | Update | PSL | PMC LO Calibration | [quote]
3.8Vpp is about 16dBm.
The mixer for the PMC demodulator is level |
|
|
1477
|
Mon Apr 13 08:59:57 2009 |
steve | Update | PSL | mixers on order | [quote][quote]
I then changed the RF Output Adjust slider
in increments of 0.5, and measured the peak-to-peak |
|
|
1478
|
Mon Apr 13 17:55:37 2009 |
Jenne | Update | PSL | PMC LO Mon Calibration | I have calibrated the PMC LO Mon (C1:PSL-PMC_LODET)
on the PMC's EPICS screen, by inputting different
RF LO levels into the LO input of the PMC |
|
|
1480
|
Tue Apr 14 02:59:02 2009 |
Yoichi | Update | Locking | Power up until 26 | Yoichi, Peter,
With careful adjustments of the common mode |
|
|
1482
|
Tue Apr 14 17:20:36 2009 |
Yoichi | Update | Computer Scripts / Programs | Parallel Optickle | I wrote a parallel version of tickle() function
for Optickle.
The attached ptickle.m, which provides ptickle() |
|
|
1484
|
Wed Apr 15 02:20:46 2009 |
rana, yoichi | Update | DMF | DMF now working copy | We found that DMF/ was not an SVN working
copy, so I wiped out the SVN version, imported
the on-disk copy, moved it to DMFold/ and |
|
|
1485
|
Wed Apr 15 03:52:27 2009 |
rana | Update | DMF | NDS client32 updated for DMF | Since |
|
|
1487
|
Wed Apr 15 17:11:37 2009 |
Jenne | Update | PSL | Edited c1psl.db to calibrate PMC's LO mon |
Following the method in Peter's
Elog,
I edited c1psl.db to include
the following:
grecord(calc, "C1:PSL-PMC_LOCALC")
{
|
|