ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
1735
|
Mon Jul 13 00:34:37 2009 |
Alberto | DAQ | Computers | All computers down |
|
|
1734
|
Sun Jul 12 23:14:56 2009 |
Jenne | Omnistructure | General | Web screenshots aren't being updated | Before heading back to the 40m to check
on the computer situation, I thought I'd
check the web screenshots page that Kakeru |
|
1733
|
Sun Jul 12 20:06:44 2009 |
Jenne | DAQ | Computers | All computers down | I popped by the 40m, and was dismayed to
find that all of the front end computers are |
|
1732
|
Sun Jul 12 20:05:06 2009 |
rana | Omnistructure | Environment | Changed office temp | This is a 7-day minute trend. There's [B]no
obvious effect[/B] in any of the channels
looking back 2 days.
|
|
1731
|
Fri Jul 10 19:56:23 2009 |
rana, koji | Omnistructure | Environment | Changed office temp | I have increased the temperature setpoint
in the office area by ~0.75 deg F. Figure
attached. Also a few days ago I increased |
|
1730
|
Fri Jul 10 17:32:08 2009 |
rana | Update | Environment | seisBLRMS & mafalda restarted | Rana, Alberto
Mafalda's ethernet cable had fallen out of |
|
1729
|
Thu Jul 9 19:24:50 2009 |
rana | Update | PEM | more mic position changes; mics not picking up high frequencies | Might be the insidious 850 Hz AA filters in
the black AA box which precedes the ADC.
|
|
1728
|
Thu Jul 9 19:05:32 2009 |
Clara | Update | PEM | more mic position changes; mics not picking up high frequencies | Bonnie has been strung up on bungees in
the PSL so that her position/orientation
can be adjusted however we like. She is now |
6x |
1727
|
Thu Jul 9 02:18:09 2009 |
rana | Update | PEM | Bonnie moved to PSL, getting some coherence with the PMC_ERR channel | My guess is that we need a different acoustic
strategy. The microphones are mainly for
high frequencies,
|
|
1726
|
Wed Jul 8 19:42:37 2009 |
Clara | Update | PEM | Bonnie moved to PSL, getting some coherence with the PMC_ERR channel | In her position overlooking whichever table
it is that is next to the PSL, Bonnie drummed
up some decent coherence with the PSL-PMC_ERR |
  |
1725
|
Wed Jul 8 19:13:19 2009 |
Alberto | Update | PSL | PSL beam aligned to the Mode Cleaner | Today I tuned the periscope on the PSL
table to align the beam to the Mode Cleaner.
With the Wave Front Sensor control off, I |
|
1724
|
Wed Jul 8 18:46:56 2009 |
Dmass | AoG | Electronics | Beam Scan Funky | The beam scan (which has been living in
the bridge subbasement for a bit now) is
in a state of imperfection. |
 |
1723
|
Wed Jul 8 12:36:15 2009 |
Clara | Update | PEM | Coherences and things | After setting up the microphones last week,
I modified the Wiener filtering programs
so as to include the microphone signals. |
7x |
1722
|
Wed Jul 8 11:13:36 2009 |
Alberto | Omnistructure | Computers | wireless router disconnected | Once again, this morning I found the wireless
router disconnected from the LAN cable. No
martian WiFi was available. |
|
1721
|
Wed Jul 8 11:08:43 2009 |
Zach | Update | Cameras | GigE Phase Camera | The plan for the optical setup has been
corrected after it was realized that it would
be impossible to isolate a 29.501 MHz frequency |
 |
1720
|
Wed Jul 8 11:05:40 2009 |
Chris Zimmerman | Update | General | Week 3/4 Update | The last week I've spent mostly working
on calculating shot noise and other sensitivities
in three michelson sensor setups, the standard |
|
1719
|
Wed Jul 8 10:56:04 2009 |
Stephanie | Update | General | Multiply Resonant EOM Update | This week, I've been working on adapting
the last week's circuit to make it buildable.
Mostly this has involved picking components |
  |
1718
|
Tue Jul 7 16:06:59 2009 |
Clara | Update | Computer Scripts / Programs | DTT synchronization errors, help would be appreciated | I am attempting to use the DTT program
to look at the coherence of the individual
accelerometer signals with the MC_L signal. |
|
1717
|
Tue Jul 7 15:08:49 2009 |
Koji | Summary | Photos | 40 high school students visited 40M | Alan and Alberto conducted a tour of 40
high-school students.
It may be the same tour that Rana |
|
1716
|
Thu Jul 2 17:37:36 2009 |
steve | Update | VAC | V1 interlock test | Joe, Alberto and Steve
We tested gate valve V1 interlock
by : |
|
1715
|
Thu Jul 2 16:45:06 2009 |
Clara | Update | PEM | Bonnie and Clyde are officially in operation! (Butch Cassidy and the Sundance Kid are in temp position) | I hooked up Bonnie and Clyde last night
and tested it today. First I tried some loud
noises to make sure I could identify them |
  |
1714
|
Thu Jul 2 06:31:35 2009 |
Clara | Update | PEM | First mic in place and connected | I clamped Bonnie (microphone) to the top
of a chamber near the vertex of the arms
and placed Clyde (pre-amp) on the table right |
|
1713
|
Thu Jul 2 05:27:12 2009 |
Clara | Update | PEM | Voltage Divider Oops | I tested the voltage dividers and was getting
up to about 3V. I retested the mic w/o the
voltage divider in place, and, lo and behold, |
|
1712
|
Wed Jul 1 11:04:27 2009 |
Zach | Update | Cameras | GigE Phase Camera | This past week, I have building a sine
wave rectifier and trying to write a simple
program that displays a ccd image to familiarize |
 |
1711
|
Wed Jul 1 11:00:52 2009 |
Stephanie | Update | General | Multiply Resonant EOM Update | Since last week, I have come up with a
new circuit, which is shown in the attached
figure. The magnitude (solid) and phase (dashed) |
 |
1710
|
Wed Jul 1 10:56:42 2009 |
Chris Zimmerman | Update | General | Week 2/3 Update | I spent the last week working a lot with
the differences between a basic Michelson
readout and the new one as a displacement |
|
1709
|
Tue Jun 30 23:09:40 2009 |
Alberto | Update | Locking | chronicles of some locking attempts | Tonight I tried to lock the interferometer.
At the first attempts the arm power didn't
go above about 4. The mode cleaner seemed |
|
1708
|
Sat Jun 27 03:16:16 2009 |
Clara | Update | PEM | Exciting microphone things! | So, I'm double-posting, but I figured the
last post was long enough as it was, and
this is about something different. After |
  |
1707
|
Sat Jun 27 02:48:09 2009 |
Clara | Update | PEM | I moved accelerometers and made some pretty pictures | I have been working on finding the best
spots to put the accelerometer sets in order
to best subtract out noise (seismometers |
6x |
1706
|
Fri Jun 26 19:14:04 2009 |
rana | Update | Environment | seisBLRMS for the past 3 weeks | [COLOR=chocolate][SIZE=2]Restarted the seisBLRMS.m
on mafalda (running a term on op540m). Don't
know why it stopped - the
|
|
1705
|
Fri Jun 26 18:00:36 2009 |
Jenne | Update | PEM | New PEM channels for the fancy-pants new microphones | [ Jenne, Clara ]
We made new channels for the microphones
which came in this week, by editing C1ADCU_PEM.ini |
|
1704
|
Fri Jun 26 15:22:28 2009 |
Clara | Update | PEM | XLR cables tested and labeled | We now have two 80-foot, female-to-female
XLR cables for our pretty new microphones,
one yellow and one purple. They have been |
 |
1703
|
Thu Jun 25 21:00:30 2009 |
Clara | Update | PEM | MC1 Accelerator set moved again; new XLR cables | I moved the MC1 set of accelerators. Might
have bumped things. If things aren't working,
look around the MC1 chamber. |
|
1702
|
Thu Jun 25 17:27:42 2009 |
rana | Update | Computers | tdsresp on linux | I downloaded the tdsresp.pl from LLO and put
it into the various TDS/bin paths. Also updated
the LLO specific path stuff. It runs. |
|
1701
|
Thu Jun 25 10:28:58 2009 |
steve | HowTo | VAC | Cryopump is regenerated | The Cryopump's VC1 valve to IFO was closed
yesterday.
The compressor
Helium pressure was 235 PSI. The cold head |
|
1700
|
Wed Jun 24 17:08:16 2009 |
steve | Bureaucracy | SAFETY | surf student safety | The 40m lab specific safety training is
done. The participants were
Stephanie Erickson, Clara Bennett, |
|
1699
|
Wed Jun 24 14:43:19 2009 |
rob | Update | Computers | tdsresp on linux => pzresp |
tdsresp is broken on our linux control
room machines. I made a little perl |
|
1698
|
Wed Jun 24 12:09:24 2009 |
Clara | Update | PEM | Week 1(ish) | I spent the week reading up on filter algorithm
theory, particularly Wiener filtering. I
have also learned how to get data from specific |
|
1697
|
Wed Jun 24 12:04:22 2009 |
Zach | Update | Cameras | SURF entry | This week, I've been reading some literature
concerning PLL and familiarizing myself with
LINUX, MATLAB, and high-pass filter circuits. |
|
1696
|
Wed Jun 24 12:04:00 2009 |
Clara | Update | PEM | accelerometer clarification | When I said "MC1/MC2 accelerometers,"
I meant the entire three-axis accelerometer
set at each point. |
|
1695
|
Wed Jun 24 11:20:40 2009 |
Stephanie | Update | General | Multiply Resonant EOM Update | I have created the attached EOM circuit
with resonances at 11 MHz, 29.5 MHz, and
55 MHz (the magnitude and phase of the voltage |
 |
1694
|
Wed Jun 24 10:53:34 2009 |
Chris Zimmerman | Update | General | Week 1/2 Update | I've spent most of the last week doing
background reading; fourier transforms, shm,
e&m, and other physics that I didn't |
|
1693
|
Wed Jun 24 09:21:19 2009 |
steve | Configuration | VAC | IFO RGA scan with Maglev & Cryo |
|
 |
1692
|
Tue Jun 23 23:14:36 2009 |
Clara | Configuration | PEM | Accelerometers relocated | Both accelerometers have been moved in
an attempt to optimize their positions. The
MC1 accelerometer was moved from one green |
|
1691
|
Tue Jun 23 15:19:42 2009 |
steve | Configuration | VAC | V1 is open |
|
|
1690
|
Tue Jun 23 10:06:03 2009 |
steve | Update | VAC | new maglev RGA scan at day6 | The Maglev is running for 10 days with
V1 closed. The pressure at the RGA-region
is at 2e-9 torr on CC4 cold cathode |
 |
1689
|
Sun Jun 21 00:08:26 2009 |
rana | Configuration | Computers | elog rebooted |
nodus:log>dmesg
|
|
1688
|
Fri Jun 19 14:30:47 2009 |
Alberto | Configuration | Computers | elog rebooted |
|
|
1687
|
Fri Jun 19 13:39:29 2009 |
Aidan | Update | General | Upper limit measurement of the scatter from the eLIGO beam dumps. |
|
    |
1686
|
Fri Jun 19 13:38:42 2009 |
Alberto | Configuration | Computers | elog rebooted | Today I found the elog down, so I rebooted
it following the instructions in the wiki. |
|