| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
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1643
|
Tue Jun 2 23:53:12 2009 |
pete | DAQ | Computers | reset c1susvme1 | rob, alberto, rana, pete
we reset this computer, which was
out of sync (16384 in the FE_SYNC field instead |
|
|
1642
|
Tue Jun 2 23:12:08 2009 |
rob | Configuration | Computers | ntp on op440m | I restarted ntpd on op440m to solve a "synchronization
error" that we were having in DTT.
I also edited the config file (/etc/inet/ntp.conf) |
|
|
1641
|
Tue Jun 2 02:28:58 2009 |
pete | Update | Locking | DD handoff work | alberto, pete
We worked on tuning the DD handoff |
|
|
1640
|
Mon Jun 1 19:19:26 2009 |
rana | Update | PSL | 1000 days of hour-trend | |
|
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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
|
|
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1638
|
Mon Jun 1 14:49:07 2009 |
rob | Summary | PSL | psl thoughts | Some thoughts on what happened with the
MOPA cooling.
Some unknown thing happened to precipitate |
|
|
1637
|
Mon Jun 1 14:33:42 2009 |
rob | Configuration | Computer Scripts / Programs | op540m Monitor added to web status | I added op540m's display 0 (the northern-most
monitor in the control room) to the MEDM
screens webpage: https://nodus.ligo.caltech.edu:30889/medm/screenshot.html |
|
|
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 |
|
|
1635
|
Mon Jun 1 13:25:00 2009 |
rob | Update | Computers | c1susvme2, c1iscex running late |
|
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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 |
|
|
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 |
|
|
1632
|
Sat May 30 11:24:56 2009 |
rob | Configuration | PSL | NPRO slow scan | I'm setting SLOWDC to about -5.
I had to edit FSSSlowServo because
it had hard limits on SLOWDC at (-5 and 5). |
|
|
1631
|
Fri May 29 18:57:09 2009 |
steve | Update | PSL | the laser is back | Steve, Rob and Alberto
Starting capacitor 216 miroFarad |
|
|
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 |
|
|
1629
|
Thu May 28 14:34:25 2009 |
rob | Update | PSL | chiller diagnosis |
|
|
|
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 |
|
|
1627
|
Wed May 27 10:54:09 2009 |
rob | Update | PSL | we don't understand the chiller (broken) |
|
|
|
1626
|
Tue May 26 17:34:14 2009 |
rob | Update | PSL | MOPA re-deactivated |
|
|
|
1625
|
Tue May 26 17:05:44 2009 |
rob | Update | PSL | MOPA re-activated | steve, rob, alberto
Steve installed two rotary flow meters |
|
|
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, |
|
|
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. |
|
|
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 |
|
|
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 |
|
|
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. |
|
|
1619
|
Fri May 22 00:43:24 2009 |
rob | Configuration | Computer Scripts / Programs | IFO configure scripts for XARM and YARM | I edited the configure scripts (those called
from the C1IFO_CONFIGURE screen) for restore
XARM and YARM. These used to misalign |
|
|
1618
|
Thu May 21 18:21:57 2009 |
rana | Summary | Treasure | Yoichi's words | |
|
|
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
|
|
|
1616
|
Thu May 21 18:05:03 2009 |
pete | Update | SUS | ETMX coils look OK |
|
|
|
1615
|
Thu May 21 12:58:32 2009 |
rob | Configuration | ALARM | PEM count-half disabled | I've disabled the alarm for PEM_count_half,
using the mask in the 40m.alhConfig file.
We can't do anything about it, and it's just |
|
|
1614
|
Wed May 20 16:03:52 2009 |
steve | Omnistructure | Environment | using OSEMs to look at seismic activity | Rana suggested using OSEM sensing voltages
as guide lines to look seismic activity.
As you see todays drilling and tumping |
|
|
1613
|
Wed May 20 10:43:17 2009 |
steve | Omnistructure | Environment | accelerometers sensitivity |
|
|
|
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. |
|
|
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 |
|
|
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 |
|
|
1609
|
Tue May 19 16:18:45 2009 |
steve | Configuration | VAC | IFO pressure is 4.2e-7 Torr with CRYO pump | [quote]Morning Vacuum condition: IFO is not
being pumped, P1 pressure is 1.8 mTorr and
rising (see P1 pressure plot of 100 min ).
|
|
|
1608
|
Tue May 19 16:08:03 2009 |
rana | Summary | SEI | EUCLID | From Stuart Aston, I've attached a picture
of the EUCLID position sensor: |
|
|
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 |
|
|
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 |
|
1605
|
Tue May 19 12:30:41 2009 |
rob | Configuration | SUS | ETMY f2pRatio script run | [quote]Now that the ETMY optical lever is
not so bad, I ran the f2pRatio script and
it seems to have worked.
|
|
|
1604
|
Tue May 19 09:34:29 2009 |
steve | Configuration | VAC | IFO is not pumped & CRYO is being regenerated | Morning Vacuum condition: IFO is not being
pumped, P1 pressure is 1.8 mTorr and rising
(see P1 pressure plot of 100 min ).
|
|
|
1603
|
Mon May 18 21:34:18 2009 |
rana | Configuration | SUS | ETMY f2pRatio script run | Now that the ETMY optical lever is not so
bad, I ran the f2pRatio script and it seems
to have worked.
|
|
|
1602
|
Mon May 18 20:16:20 2009 |
rana | Configuration | VAC | not it | There was essentially no change in the ETMY
oplev spectrum with the cryo off!
|
|
|
1601
|
Mon May 18 19:44:52 2009 |
rana, steve | Configuration | VAC | Cryo Pump turned off and valved off: 1 beer can only | I was seeing some excess noise in the ETMY
oplev yaw and so we turned off the cryo and
restarted c1vac2 to get the turbo pump channels |
|
|
1600
|
Mon May 18 15:31:11 2009 |
rana | Update | PEM | Temp sensor | [quote]Picture of cooler for posterity is
attached[/quote]
|
|
|
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.
|
|
|
1598
|
Mon May 18 02:18:17 2009 |
rana | Summary | SEI | Using STACIS w/ a good position sensor | [FONT=Verdana]WE turned off STACIS a few years
ago because we noticed that it was causing
noise below a few Hz and making
|
|
|
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.
|
|
|
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 |
|
|
1595
|
Sun May 17 21:45:40 2009 |
rob | Update | ASC | ITMX oplev centered | |
|
|
1594
|
Sun May 17 20:50:38 2009 |
rob | Omnistructure | Environment | mag 5.0 earthquake in inglewood | 2009 May 18 03:39:36 UTC
Details
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