ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
1665
|
Wed Jun 10 09:06:12 2009 |
steve | Update | PEM | particle counts and turbulance | I moved the mobile HEPA filter from ITMX's
north door to ITMX-ISCT and covered it up
with a merostate tent to accommodate the |
|
|
1666
|
Wed Jun 10 09:28:14 2009 |
steve | Update | PSL | PMC | The PMC alarm was on this morning. It was
relocked at lower HV
The FSS_RMTEMP jumped 0.5 C so The |
|
|
1667
|
Thu Jun 11 03:15:15 2009 |
Alberto | Update | LSC | DD Handoff attempts | Pete, Alberto,
tonight we worked on the tuning of
the double demod phases for the handoff of |
|
|
1668
|
Thu Jun 11 14:54:18 2009 |
josephb, alberto | Update | Computers | Wireless network | After poking around for a few minutes several
facts became clear:
1) At least one GPIB interface has |
|
|
1669
|
Thu Jun 11 22:14:10 2009 |
Alberto | Update | LSC | DD Handoff for the Short DOFs completed | This afternoon I tuned the handoff script
for the SRC, after that Rob eralier during
the day had already adjusted that for PRC. |
|
|
1670
|
Fri Jun 12 02:01:03 2009 |
rob | Update | Computer Scripts / Programs | DRM matrix diagonalization | I started two scripts, senseDRM
and loadDRMImatrixData.m, which Peter
will bang on until they're correct. |
|
|
1671
|
Fri Jun 12 09:56:38 2009 |
steve | Configuration | VAC | new maglev installed | Joe and Steve
The retrofitted Osaka 390 was installed |
|
|
1672
|
Fri Jun 12 15:34:49 2009 |
steve | Configuration | VAC | maglev is running |
|
|
|
1673
|
Mon Jun 15 15:17:33 2009 |
josephb, Steve | Configuration | VAC | Vacuum control and monitor screens | We updated the vacuum control and monitor
screens (C0VAC_MONITOR.adl and C0VAC_CONTROL.adl).
We also updated the /cvs/cds/caltech/target/c1vac1/Vac.db |
|
|
1674
|
Mon Jun 15 16:31:36 2009 |
steve | Configuration | VAC | RGA is scanning new Maglev |
|
|
|
1675
|
Tue Jun 16 02:09:31 2009 |
rob | Update | Locking | DD handoff finally working | I had trouble getting the SRC handoff from
SD to DD to work. I tried different
gains, flipping the PD7 & 8 demod phases |
|
|
1676
|
Tue Jun 16 03:43:04 2009 |
rob | Update | Locking | same troubles | Lock is still being lost, right at the
end of the process when trying to reduce
the CARM offset to zero. |
|
|
1677
|
Tue Jun 16 09:02:30 2009 |
steve | Configuration | VAC | new maglev RGA scan | The maglev fore line pressure is 3e-6 torr
at CC2 after 4 days of pumping. Varian turbo
V-70 is pumping on it through V4 and VM2 |
|
|
1678
|
Tue Jun 16 14:02:16 2009 |
rob | Update | Locking | locked | The IFO is locked, at the operating point
(zero CARM offset). The problem with
reducing the residual CARM offset in the |
|
|
1679
|
Tue Jun 16 16:10:01 2009 |
pete | Update | Locking | input matrix experiments | Last night Rob ran senseDRM and loadDRMImatrixData
and came up with the following for the input
matrix: |
|
|
1680
|
Tue Jun 16 17:38:35 2009 |
rob | Update | Locking | DeWhites ON | With the common mode servo bandwidth above
30kHz and the BOOST on (1), I was able to
switch on the test mass dewhitening. |
|
|
1681
|
Tue Jun 16 20:03:41 2009 |
Alberto | Update | Electronics | Requirements on Wenzel Multiplier | For
the 40m Upgrade, we plan to |
|
|
1682
|
Wed Jun 17 01:07:50 2009 |
rob | Configuration | Computers | matapps on /cvs/cds | I checked out a copy of matapps into /cvs/cds/caltech/apps/lscsoft
so that I could find the matlab function
strassign.m, which is necessary for some |
|
|
1683
|
Wed Jun 17 01:09:47 2009 |
rob | Update | Computers | /cvs/cds 91% full | In /cvs/cds/caltech
|
|
|
1684
|
Thu Jun 18 23:08:46 2009 |
rob | Update | Locking | spectrum | Here's a noise spectrum of the RSE interferometer,
in anti-spring mode, with RF readout.
I'd say the calibration is "loose." |
|
|
1685
|
Thu Jun 18 23:20:40 2009 |
rob | Summary | LSC | I-Q ratio with RF detected DARM | This is a ratio of PD1_I to PD1_Q (so a
ratio of the two quadratures of AS166), measured
in an anti-spring state. It's not flat |
|
|
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. |
|
|
1687
|
Fri Jun 19 13:39:29 2009 |
Aidan | Update | General | Upper limit measurement of the scatter from the eLIGO beam dumps. |
|
|
|
1688
|
Fri Jun 19 14:30:47 2009 |
Alberto | Configuration | Computers | elog rebooted |
|
|
|
1689
|
Sun Jun 21 00:08:26 2009 |
rana | Configuration | Computers | elog rebooted |
nodus:log>dmesg
|
|
|
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 |
|
|
1691
|
Tue Jun 23 15:19:42 2009 |
steve | Configuration | VAC | V1 is open |
|
|
|
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 |
|
|
1693
|
Wed Jun 24 09:21:19 2009 |
steve | Configuration | VAC | IFO RGA scan with Maglev & Cryo |
|
|
|
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 |
|
|
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 |
|
|
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. |
|
|
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. |
|
|
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 |
|
|
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 |
|
|
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, |
|
|
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 |
|
|
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. |
|
|
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. |
|
|
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 |
|
|
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 |
|
|
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
|
|
|
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 |
|
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 |
|
|
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 |
|
|
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 |
|
|
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) |
|
|
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 |
|
|
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, |
|
|
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 |
|