| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
1572
|
Sun May 10 13:41:17 2009 |
steve | Update | VAC | ETMY damping restored, VC1 opened | ETMY damping restored.
Cryo interlock closed VC1 ~2
days ago. P1 is 6.3 mTorr. Cryo temp 12K |
|
|
1573
|
Mon May 11 11:49:20 2009 |
steve | Update | PSL | MOPA cooling water lines are backwards | [quote]This is 8 days of 10-minute trend.
DTEC is just the feedback control signal |
|
|
1574
|
Mon May 11 12:25:03 2009 |
josephb,Alex | Update | Computers | fb40m down for patching | The 40m frame builder is currently being
patched to be able utilize the full 14 TB
of the new raid array (as opposed to being |
|
|
1575
|
Tue May 12 01:11:55 2009 |
Yoichi | Update | LSC | DARM response (DC Readout) | I measured the DARM response with DC readout.
This time, I first measured the open loop |
|
|
1576
|
Tue May 12 01:22:51 2009 |
Yoichi | Update | LSC | Arm loss | Using the armLoss script (/cvs/cds/caltech/scripts/LSC/armLoss),
I measured the round trip loss (RTL) of the
arms.
|
|
|
1577
|
Tue May 12 15:22:09 2009 |
Yoichi | Update | LSC | Arm Finesse | [quote]
It looks as if the measured DARM response
is skewed by an extra low pass filter at |
|
|
1578
|
Tue May 12 17:26:56 2009 |
pete | Update | oplevs | etmy oplev quad was bad | Pete, Rob
After looking at some oplev noise
spectra in DTT, we discovered that the ETMY |
|
|
1580
|
Wed May 13 03:05:13 2009 |
pete | Update | oplevs | etmy oplev quad was bad |
|
|
|
1581
|
Wed May 13 12:41:14 2009 |
josephb | Update | Cameras | Timing and stability tests of GigE Camera code | At the request of people down at LLO I've
been trying to work on the reliability and
speed of the GigE camera code. In my |
|
|
1585
|
Thu May 14 02:36:05 2009 |
pete | Update | Locking | unstable IFO | It seems that the MC3 problem is intermittent
(one-day trend attached). I tried to
take advantage of a "clean MC3" |
|
|
1588
|
Fri May 15 00:02:34 2009 |
pete | Update | SUS | ETMX coils look OK | I checked the four rear coils on ETMX by
exciting XXCOIL_EXC channel in DTT with amplitude
1000@ 500 Hz and observing the oplev PERROR |
|
|
1590
|
Fri May 15 16:47:44 2009 |
josephb | Update | Cameras | Improved camera code | At Rob's request I've added the following
features to the camera code.
The camera server, which can be started |
|
|
1591
|
Fri May 15 17:30:00 2009 |
rob | Update | LSC | arms, coils, locks | This is the two arms locked, for an hour.
No integrator in either loop, but from this
it looks like ETMY may have a bigger length2angle |
|
|
1592
|
Sat May 16 16:20:33 2009 |
rob | Update | LSC | arms, coils, locks, #2 |
|
|
|
1593
|
Sun May 17 14:35:52 2009 |
Yoichi | Update | VAC | VC1 opened | I found the VC1 was closed and the pressure
was 4.5e-3 torr.
I tweaked the optical sensor (cryopump temperature), |
|
|
1595
|
Sun May 17 21:45:40 2009 |
rob | Update | ASC | ITMX oplev centered | |
|
|
1596
|
Sun May 17 23:22:19 2009 |
rana | Update | Environment | seisBLRMS for the past 3 weeks | Looks like Chris Wipf's fix of using fclose
worked for the NDS client.
The attached plot shows the minute trend |
|
|
1597
|
Mon May 18 01:54:35 2009 |
rana | Update | PEM | Unplugged Guralp channels | To see if Caryn's data dropouts were happening,
I looked at a trend of all of our temperature
channels. Looks OK now.
|
|
|
1599
|
Mon May 18 10:06:56 2009 |
caryn | Update | PEM | Temp sensor | [quote]To see if Caryn's data dropouts were
happening, I looked at a trend of all of
our temperature channels. Looks OK now.
|
|
|
1600
|
Mon May 18 15:31:11 2009 |
rana | Update | PEM | Temp sensor | [quote]Picture of cooler for posterity is
attached[/quote]
|
|
|
1606
|
Tue May 19 15:54:29 2009 |
Jenne | Update | PEM | More Plots for the S5 H1:DARM Wiener Filtering.... | Even more plots for the Wiener filtering!
We have a set of spectrograms, which
show (in color) the amplitude spectrum, at |
6x |
|
1607
|
Tue May 19 15:57:07 2009 |
steve | Update | IOO | MC2 damping restored after EQ | Earthquake mag 4.0 at Lennox, Ca
trips MC2 watchdogs
http://quake.usgs.gov/recenteqs/Quakes/ci10411545.html |
|
|
1610
|
Wed May 20 01:41:19 2009 |
pete | Update | VAC | cryopump probably not it | I found some neat signal analysis software
for my mac (http://www.faberacoustical.com/products/),
and took a spectrum of the ambient noise |
|
|
1611
|
Wed May 20 01:53:48 2009 |
rob, pete | Update | Locking | violin mode filters in drstep_bang | Recently the watch script was having difficulty
grabbing a lock for more than a few seconds.
Rob discovered that the violin notch filters |
|
|
1612
|
Wed May 20 09:55:18 2009 |
steve | Update | PEM | oplev servos turned off | All oplevs servos turned off to protect
our suspentions from vibration due to drilling
and pounding in CES high bay area. |
|
|
1616
|
Thu May 21 18:05:03 2009 |
pete | Update | SUS | ETMX coils look OK |
|
|
|
1617
|
Thu May 21 18:07:32 2009 |
rana | Update | PSL | Screw on Needle valve loosened | Alberto and I went in to loosen up the needle
valve yesterday around 4:30 PM. The idea
was to cut down on
|
|
|
1620
|
Fri May 22 01:27:14 2009 |
pete | Update | SUS | 200 days of MC3 side | Looks like something went nuts in late
April. We have yet to try a hard reboot. |
|
|
1621
|
Fri May 22 17:03:14 2009 |
rob, steve | Update | PSL | MOPA takes a holiday | The MOPA is taking the long weekend off.
Steve went out to wipe off the condensation
inside the MOPA and found beads of water |
|
|
1622
|
Fri May 22 17:05:24 2009 |
rob, pete | Update | Computers | hard reboot of vertex suspension controllers | we did a hard reboot of c1susvme1, c1susvme2,
c1sosvme, and c1susaux. We are hoping
this will fix some of the weird suspension |
|
|
1623
|
Sun May 24 11:24:08 2009 |
rob | Update | Computers | elog restarted | I just restarted the elog. It was
crashed for unknown reasons. The restarting
instructions are in the wiki. |
|
|
1624
|
Mon May 25 21:31:47 2009 |
caryn | Update | PEM | plugged in Guralp channels | Guralp Vert1b and Guralp EW1b are plugged
back in to PEM ADCU #10 and #12 respectively.
Guralp NS1b remains plugged in. So, |
|
|
1625
|
Tue May 26 17:05:44 2009 |
rob | Update | PSL | MOPA re-activated | steve, rob, alberto
Steve installed two rotary flow meters |
|
|
1626
|
Tue May 26 17:34:14 2009 |
rob | Update | PSL | MOPA re-deactivated |
|
|
|
1627
|
Wed May 27 10:54:09 2009 |
rob | Update | PSL | we don't understand the chiller (broken) |
|
|
|
1628
|
Wed May 27 15:59:44 2009 |
rob | Update | PSL | we don't understand the chiller (broken) | steve, alberto, rob
After some futzing around with the
chiller, we have come to the tentative conclusion |
|
|
1629
|
Thu May 28 14:34:25 2009 |
rob | Update | PSL | chiller diagnosis |
|
|
|
1630
|
Thu May 28 18:41:26 2009 |
steve | Update | PSL | the saga of the chiller is ending | I drained the water and removed side covers
from the Neslab RTE 140 refrigerated water
cooler unit this morning. The hoses to the |
|
|
1631
|
Fri May 29 18:57:09 2009 |
steve | Update | PSL | the laser is back | Steve, Rob and Alberto
Starting capacitor 216 miroFarad |
|
|
1633
|
Sat May 30 12:03:34 2009 |
rob | Update | PSL | MC locked | I locked to PSL loops, then tweaked the
alignment of the MC to get it to lock.
I first steering MC1 until all the |
|
|
1634
|
Sat May 30 12:36:52 2009 |
rob | Update | Computers | c1susvme2, c1iscex running late | c1susvme2 has been running just a bit late
for about a week. I rebooted it.
The plot shows SRM_FE_SYNC, which |
|
|
1635
|
Mon Jun 1 13:25:00 2009 |
rob | Update | Computers | c1susvme2, c1iscex running late |
|
|
|
1636
|
Mon Jun 1 13:56:52 2009 |
Alberto | Update | PSL | Laser Power after fixing the laser chiller | The laser power seems to have become more
stable after fixing the laser chiller. The
power is lower than it used to be (MOPA amplitude |
|
|
1639
|
Mon Jun 1 15:01:31 2009 |
rana | Update | PSL | Laser Power after fixing the laser chiller: more traces | If you look at the correlation between RMTEMP
and HTEMP, you see what we knew: namely that
there
|
|
|
1640
|
Mon Jun 1 19:19:26 2009 |
rana | Update | PSL | 1000 days of hour-trend | |
|
|
1641
|
Tue Jun 2 02:28:58 2009 |
pete | Update | Locking | DD handoff work | alberto, pete
We worked on tuning the DD handoff |
|
|
1644
|
Tue Jun 2 23:55:45 2009 |
Alberto | Update | oplevs | oplevs centerd | Tonight I centered the oplevs for ITMX/Y,
SRM, PRM, BS.
After doing that I noticed that the |
|
|
1645
|
Wed Jun 3 03:22:16 2009 |
pete | Update | Locking | DD handoff | Rana, Alberto, Pete
We have the DD handoff nominally
working. Sometimes, increasing the |
|
|
1646
|
Wed Jun 3 03:30:52 2009 |
rana | Update | MOPA | NPRO current adjust | I increased the NPRO's current to the max
allowed via EPICS before the chiller shutdown.
Yesterday, I did this
|
|
|
1647
|
Wed Jun 3 11:28:01 2009 |
caryn | Update | PEM | Unplugged Guralp channels | |
|