| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
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")
{
|
|
|
1488
|
Thu Apr 16 11:17:56 2009 |
Jenne | Update | PSL | Edited c1psl.db to calibrate PMC's LO mon |
|
|
|
1489
|
Thu Apr 16 16:26:57 2009 |
pete | Update | Locking | Wed. night locking | yoichi, pete
We installed the watchLockLoss script in |
|
|
1490
|
Thu Apr 16 16:37:42 2009 |
Alberto | Update | Auxiliary locking | the zipper | It takes 18 months to double the computational
power of microprocessors but it took man
thousands of years to invent the zipper. |
|
|
1491
|
Thu Apr 16 17:19:44 2009 |
Alberto | Update | Auxiliary locking | the zipper |
|
|
|
1493
|
Fri Apr 17 11:05:22 2009 |
Yoichi | Update | Locking | Thursday night locking status | The last night, it was sort of robust to go
up until arm power = 26.
The REFL_DC gain seems to change a lot around |
|
|
1495
|
Sun Apr 19 03:34:05 2009 |
Yoichi | Update | Locking | Saturday night lock | Tonight I was able to go up to arm power =
33, by mainly tweaking the DARM gain. A small
progress.
|
|
|
1497
|
Sun Apr 19 11:51:05 2009 |
josephb | Update | Cameras | Mafalda may need an update | I tried installing libusb-dev on mafalda
in order to try getting the usb frame grabber
to work on it, but could not as it could |
|
|
1499
|
Mon Apr 20 11:57:27 2009 |
rob | Update | Cameras | Mafalda may need an update |
|
|
|
1501
|
Mon Apr 20 18:36:37 2009 |
rana | Update | Cameras | Mafalda may need an update | Sadly, the sensoray crap doesn't seem to build
on CentOS. I too would prefer a homogenous
solution,
|
|
|
1506
|
Tue Apr 21 18:18:27 2009 |
steve | Update | VAC | maglev failed | Our Osaka TG360MB maglev failed with CSB
error message. This means that the dry emergency
landing bearing has to be replaced. |
|
|
1508
|
Thu Apr 23 13:55:43 2009 |
josephb, peter | Update | Computers | RCG example | We successfully compiled and installed
the Real time Code Generator "Hello
World" example (which is a skeleton |
|
|
1509
|
Thu Apr 23 16:27:24 2009 |
Yoichi | Update | Locking | Locking with the cryo-pump | The last night, the IFO was unstabler than
usual and the locking script often failed
before reaching the power up stage.
|
|
|
1511
|
Thu Apr 23 16:38:33 2009 |
steve | Update | VAC | vac valve relay box is shorting | Ben and I found this vacuum valve relay
box intermittently shorthing yesterday.
It effects V4, V5, VA6 and VM1........ |
|
|
1512
|
Thu Apr 23 18:09:11 2009 |
Yoichi | Update | Environment | Effect of cryopump | The attached is the trend plot of the MC1
accelerometer for 3 days.
It is evident that the seismic level increased |
|
|
1514
|
Fri Apr 24 03:57:30 2009 |
Yoichi | Update | Locking | DARM demod phase | Tonight, I was able to go up to arm power
= 40 by tweaking the DARM demodulation phase.
I think the DARM loop became unstable because |
|
|
1515
|
Fri Apr 24 04:38:49 2009 |
Yoichi | Update | Locking | DARM demod phase | [quote]Tonight, I was able to go up to arm
power = 40 by tweaking the DARM demodulation
phase.
|
|
|
1516
|
Fri Apr 24 11:34:32 2009 |
rob | Update | Locking | DARM demod phase | [quote][quote]Tonight, I was able to go up
to arm power = 40 by tweaking the DARM demodulation
phase.
|
|
|
1519
|
Fri Apr 24 17:26:57 2009 |
Yoichi | Update | Locking | DARM demod phase | [quote]
There's actually code in place in the LSC
to dynamically adjust the demod phase for |
|
|
1522
|
Sat Apr 25 03:27:34 2009 |
Yoichi | Update | Locking | Locking status | Yoichi, Peter,
We are working on the final step of the lock |
|
|
1523
|
Sun Apr 26 02:13:18 2009 |
Yoichi | Update | Locking | Two more successes of RF CARM handoff | Tonight, the RF CARM hand off (mostly) succeeded
twice.
But still, the IFO lost lock when I reduced |
|
|
1526
|
Tue Apr 28 04:30:16 2009 |
Yoichi | Update | Locking | RF full lock | Yoichi, Peter
I believe we have succeeded in the full lock |
|
|
1531
|
Wed Apr 29 04:03:51 2009 |
Yoichi | Update | Locking | CARM RF changed to REFL_2I | Yoichi, Peter
As Rob suggested, the optimal demodulation |
|
|
1533
|
Wed Apr 29 15:56:43 2009 |
rob | Update | Locking | effect of SRCL detune on ARM powers in a CARM sweep | With no DARM offset, sweeping CARM shows
an asymmetry between the state where we lock
to a DARM spring and the state with a DARM |
|
|
1534
|
Thu Apr 30 05:49:06 2009 |
Yoichi | Update | Locking | 166MHz LO phase changed | In order to optimize the REFL_2I demod phase,
I changed the delay line setting for the
166MHz LO.
|
|
|
1535
|
Thu Apr 30 15:10:54 2009 |
rob | Update | Locking | CARM RF changed to REFL_2I | [quote]Yoichi, Peter
As Rob suggested, the optimal demodulation |
|
|
1536
|
Fri May 1 01:32:43 2009 |
Yoichi | Update | Locking | 166MHz LO phase adjustment | I continued to adjust the REFL_2I demodulation
phase.
I first optimized the demod phase for SRCL |
|