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The LIGO Executive Committee
Agenda for Monday March 15, 2004 will be:
no report
Status of LSC/MOU Research Updates
and Program Reports (Petrac)
(LSC/Status of Research updates through August 2004 and Prog. Reports
through Feb. 2004)
Dom. Hills:Attach.
A / in LIGO review / BarishLoyola:Attach.
A / in LIGO review / Lazzarini and RilesDrafts of Attach. A and Z,
and Prog. Report / in process for web postingMoscow:Attach.
A, B, D and Z / in LIGO review / BarishSyracuse:Attach.
A / in LIGO review / Lazzarini, Riles and ZuckerAttach. B and Z / in LIGO
review / BarishDrafts of Attach. A, B, and Z, and Prog. Report / in process
for web posting
LIGO Weekly Site Telecon (Lindquist)
No site teleconference was scheduled for Thursday, March 11, 2004.
The list of current actions revised to reflect
the status of open actions assigned through the last update (March 4, 2004)
may be found at ACTION
LIST.
From: Ed Chargois <chargois_e@ligo.caltech.edu>
>From: Linda Turner - turner@ligo.caltech.edu>
Web pages for the DCC give simple how-to's for document numbering, easy access to the latest on-line documents, and search capabilities for the DCC database. Take a look. . .
ACCOMPLISHMENTS
No report this week (conference). Will be at LSC meeting next
week.
>
From: Cleveland Mak <mak_c@ligo.caltech.edu>
ACTIVITY
Making preparations for the LSC Meeting next week, which included clearing
out all electronic documents submitted to date. Organized, sorted
and filed.
| 03/11/04 | Packages | Faxes |
| In | 37 | 34 |
| Out | 6 | 23 |
Press here to access the DOCUMENT
CONTROL CENTER WEB PAGE.
From: Esther Cunningham <esther@ligo.caltech.edu>
Press here for ACCOUNTS PAYABLE HISTORY DATA .
From: "Brambila, Ruth" <Ruth.Brambila@caltech.edu>
No report this week (class).From: Florence Kaufman <fkaufman@ligo.caltech.edu>.
From: irena@ligo.caltech.edu (Irena Petrac)
No report.
From: Ed Jasnow <jasnow@ligo.caltech.edu>
SUPPORT (Baldon, Lloyd, Tischler)
>Irene Baldon
ADVANCED LIGO (Cost Schedule
Control Systems) T. Frey
From: Thomas Frey <tfrey@ligo.caltech.edu>
Out
of the office on Friday the 27th.
For list of documents that
are being used to develop Adv. LIGO Cost and Schedule, see
http://www.ligo.caltech.edu/~tfrey/Cost_MTG_082002/
The following is a summary of status by sub system:
Finished input of added cost sheets and changes to cost sheets.
Posted revised plan and progress schedule. This includes earned value analysis.
IO - Still need completed WBS dictionary and BOE.
Completed cost book changes per Jays comments.
Will post revised plan and progress schedule.
LDAS - No action required at this point in time.
INSTALL - No action items pending.
DAQ - No action required at this point in time.
PM - No action required at this point in time.
FAC - No action required at this point in time.
SUP - No action required at this point in time.
LASTI - Will input changes per teleconference with David Ottaway and Carol W. on the 20th.
Followed-up with Irena regarding reported challenges with LSC mail lists.
Continue to work with Carol and Florence starting work setting up "crosswalk" between accounting and progress reporting.
Tom Lucas, the LIGO video producer, will be visiting Livingston during
the LSC meeting. We will try to show him some gee-whiz stuff and
set up some meetings with key LSC personnel.
No open Change Requests.
From: Cindy Akutagawa <cindy@ligo.caltech.edu>
No report this week.
Summary of Commissioning Activities at LIGO Hanford Observatory (compiled by M. Landry)
Pulsed
heating was shown to be responsible for 60Hz sidebands in AS_Q.
Pulsed heating, used for fine temperature control in the LVEA, will
be
replaced by staged heating to see of temperature fluctuations are tolerated
and sidebands are eliminated.
4K IFO
As described in a recent commissioning
meeting, the 4K REFL
port was modified.
Light on ISCT1 is now bifurcated into lock acquistion and run mode
paths with
a ~90/10 split, the majority of the light going to the latter path,
but unused, awaiting
a high power photodetector. WFS gouy phases were corrected appropriately.
A status report on measurements and modelling of the thermal compensation
system
is given here.
MMT whiteningwork,phase
camera studies, and a measure
of the H1 MC line width
(HWHM of 8.4kHz, corresponding to an MC pole frequency of 4.59kHz)
rounded
out 4k commissioning.
2K IFO
The current state of the WFS on table ISCT10 is shown in this elog
(followed on
by a new sensing matrix measurement).
Testing
of the MMT2 servo continued. Similar to anomolous results with QPD
pointing, the inspiral range was remarkably sensitivite to the position
of the beamspot
on the BS. Later, a PID
version of the servo was released, and is now in beta testing.
DAQ
A major DAQ upgrade, similar to that recently undertaken at LLO, is
scheduled to
begin at LHO this weekend. A punchlist of tasks can be found
on the blue webpage,
http://blue.ligo-wa.caltech.edu, under "DAQ Upgrade and MSR Cleanup".
no report
Pump Stations
Ken Mailand
Five of the seven pump stations have are air tight
holding 110 psi, one
each of these has been located at the X and Y-end
stations. Two of the pump stations
have a varying slow leak rate. The seals we have seemed
a little hard,
and the supplier could not determine how long they
have been on the
shelf. New fresh seals for the large filters have
been received and
will be installed and tested; This is the suspected
leak area.
The 3 reservoir assemblies are in and will be assembled
and located asap,
the 'X' end will be assembled to allow it to be filled
with fluid.
The electrical break was approved as a hose sleeve
and clamp over a barb
fitting, this assembly, will separate the metal ends approx .25"
One pump station is setup to 'run' when time permits,
it will cycle fluid from the 55 gal. supply drum.
Two additional 55 gallon drums of fluid have arrived.
Alex and I finished up installing the hardware/software
for the DAQ
upgrade at LLO. Overall, things went fairly smoothly.
We are now preparing for
the LHO installation, which requires some further
work to support two IFOs. That
install is scheduled to begin March 15.
Started going through Daniel's list of software to support commissioning:
- LSC: Change in ETM controller to allow for new photodetector
to be used as
high gain NPTR.
- LSC: Support for the new DAC modules from Frequency
Devices.
- LSC: Support for output mode cleaner controls.
- SEI: Support for STS-2 seismometers.
- General: Change filter module gains to input(?);
Add gain ramp capability(?).
- DAQ/GDS: Support for ICS115 DACs (awg) in VEAs/LVEA
ADCUs.
- ASC: Implement input matrix.
- ASC: Implement adaptive input/output matrix.
- DAQ/GDS: Timing diagnostics(?).
- DAQ/GDS: Support for ICS130 (100kHz BW channel).
- DAQ/GDS: Support for complex time series data in
DAQ.
- DAQ/GDS: Support for heterodyning in ADCUs.
- ASC: Implement optical spring compensation and OL
compensation(?).
- ASC: Implement digital controls for MC.
- SEI: micro-seismic feed-forward system at LHO(?).
Work has begun on the first couple of items which
is to add support for new Freq.
Devices DAC in LSC controls, beginning with ETM controllers.
- Alex, Jay and I are at LHO next week to install
new DAQ network.
- Alex has been working on Framebuilder mods to handle
two IFO. One resulting
change is that we will not need two DAQ controllers
at LHO. A single controller
is sufficient.
- Wrote code which allows front ends and ADCU to change
DAQ channel
configurations on the fly. This will be tested at
LHO next week and then
retrofitted to LLO system.
- Working on ASC modifications as per Daniel's redesign
doc. The ASC input
matrix is working. The new opLev compensation filters
and spring compensation
filters should be ready by Friday. This will complete
the basic infrastructure,
with the adaptive algorithm to come later.
- Wrote software to allow use of new DAC modules in
ETM controllers. This will
not be enabled until further DAC tests are done at
LHO.
- ETM controller software modified to use new high gain photodiodes.
Freq Devices Low Noise DAC:
Noise testing of the module continues. A draft report
has been written and will be circulated for comments.
Fiber optic Timing signal link (translator for HEPI
to meet RFI requirements)
- Sander has a prototype for the transmitter and receiver
in hand.
- He is running into problems interfacing between
the NECL circuits we currently use and the PECL circuits needed by the
FO Xmtr and Rcvr. He feels that it will cause excessive jitter.
Timing System Resign
- Flavio has sentr out an email to Daniel and has
asked Rolf and Jay for necessary changes and features to the existing system.
He will make up a block diagram of the a possible new system to be used
as a starting point for collection of requirements.
HEPI
- Ben will be at LLO next week to assist in installation
and commissioning.
- Ben is testing the 8 channel valve driver boards.
The L4C board should be back from the board house today and will be mailed
to Screaming Circuits.
- Flavio has shipped 9 pump servo boxes. One remains
here for testing. This should be enough for LLO, MIT and spares.
ISS
- Ben is fixing the PD from LLO. He will issue a DCN
to replace all 16V caps on all PD boards.
EMI Upgrade
- Ordering and delivery of cables, connectors continues.
Output Mode Cleaner
- Jay is working with Peter K and Bill K to cobble
together the controls
The mystery of the recalcitrant camera box has been
solved: apparently the mounting plate that connects the box to the viewport
flange was inadvertently installed upside down, causing the camera and
upper periscope mirror to be shifted both horizontally and vertically so
as to be misaligned with the axes of the camera and TC beam viewports.
My apologies to Ken Mason. Some modifications to future production units
to allow easier alignment of the camera and to avoid a possible interference
with the optical lever pier are contemplated.
The modifications that were made to the enclosure
box and to the optical table mounting inside the enclosure will be incorporated
into the subsequent production units.
The optical parts list on the projector optical table will be simplified to eliminate unnecessary degrees of freedom of the optical elements. The power level of the aiming beam will be increased to improve the visibility at the ITM suspension. A limiting aperture will be installed at the image plane to restrict the CO2 laser pattern to within the diameter of the ITM, in case both masks are disabled simultaneously.
Two new vendors were found for a 5 mW version of the
crosshair aiming beam; I am awaiting a price and delivery quotation before
placing an order to replace the existing aiming beam lasers in the LHO
installed TC benches.
A permanent mask to restrict the CO2 laser energy
within the ITM in case of a mask flipper failure, was designed and is being
fabricated.
A revised Bessel mask with micrometer motion vertical and horizontal adjustments was designed and will be incorporated into the future TC bench assemblies
The vacuum envelope for the OMC has been sketched
out. The initial
footprint is a 6 in. x 6 in. box, however after a
discussion with Bill
Kells I will try and make it a tad smaller.
Most of the other components
have been worked out but the time consuming details
like O-ring sizes and
grooves remain.
Drawings for the OMC vacuum chamber and accessories
have been
completed.
Jay and I checked out the output noise of a high voltage
PZT driver.
At around 100 Hz, the output noise was approximately 25 uV.
The current shunt in the 10-W laser was partially
disassembled in order
to measure the values of a few capacitors, as the
documentation noting the
changes has been mis-placed. There was an anomaly
in the transfer function
of the current shunt that I have not yet tracked down,
as it could be that
the RF probe used is mis-behaving.
I have been doing an extensive investigation for one
of the LIGO interferometer
to address some of the effects we saw that might have
been explained by thermal
lensing and in fact some of them are.
One is that the maximum side band optical gain is
never achieved: the variation
of the refractive index due to the temperature gradient
is "almost", but not
perfectly, equivalent to a lens and therefore
the cavity modes are close to
be Gaussian but not exactly. Moreover the relationship
between the round-trip
phase and the beam shape is no longer the same as
for Gaussian fields.
Since the beam samples wider areas of the mirror
when its spot increases,
the higher order modes will be more affected by the
distribution of the
temperature gradient far from the center, where the
border conditions make
the thermal lens less and less equivalent to a "perfect"
lens.
We don't really "know" the substrate we are using,
since more power supplied by
the thermal compensation system seems to be needed
than what we expect from the
predictions based on the typical parameters used in
the model for thermal lens.
We did understand why heating ITMX only or ITMY only
gives different results.
We also found out the side bands are not at resonance
when the carrier is: this
has nothing to do with the macroscopic value of l+
and cannot be fixed. Because
of the non quadratic terms in the dependance of the
index of refraction on the
distance from the center of the mirror, the transverse
distribution of the side
band beams and their round-trip phase are not simultaneously
fixed. In fact the
maximum power built up results to be a compromise
between those two conditions.
I asked everybody a lot of questions and I would like
to thank Daniel, Luca and
Rick for their help.
The transmission maps were provided by Phil Willems,
who has been developing a
numerical model using FEMlab.
OTF Lab. (W. Bridge)
The (21) pieces of the new twisted, shielded, teflon
cables are under test.
We are taking ring down and beat frequency measurements
as well as the RGA of the chamber every day.
Absorption Test Measurement prototype in progress
We have in progress to test three of 1.00" inch fused
silica mirror for absorption.
We have finished the birefringence scattering test
on the new sapphire mirror that came from Lyon, France ~12" dia.X 6" thick.
Noise sensitivity test for the absorption prototype
is in progress.
We replaced four new 2" mirrors for the ND:YAG laser
and improved the laser power output to ~29 watt.
We modified two 1.00 " mirror mounts in order to catch
the output laser beams (He-Ne & ND:YAG)
and made new alignment. New mode match is in progress.
New laser enclosure fabrication is underway (required by: G. Sanders/B. Tyler)
Scatterometer system in standby
OTF Lab at Lauritsen ROOM 38 NO CHANGE.
Cavity #3
The cavity is locked and we are taking ring down and
beat frequency measurements every
day as well as the RGA for the chamber.
Cavity #2 Test cavity optical set up in standby
PSL LAB.
The 10 watt ND:YAG laser isin
standby
(4) PMC Bodies and Prism are out of baking chamber.
(2) sets of complete PMC assembly was sent to LHO
(R. Savage/D. Cook)
(1) PMC base was sent today to LHO
Misc... tasks
More orders has been placed for the absorption test set up.(Mirrors, Polarizer cubes, mounts etc.)
After receiving our Sapphire test masses from REO, with corrected coatings, we installed them in the TNI, closed the chamber, and pumped out. We then locked the instrument and took noise data, which we are in the process of analyzing.
Details will be provided by Eric Black during his TNI talk at the upcoming LSC meeting.
HEPI Controls (Mittleman and Ruet)
We have taken some preliminary HEPI HAM isolation preformance data.
A
number of graphs are posted on the lasti ilog on March 9,10 and 11.
Laurent has been working on the BSC/pier ground amplification
problem.
He has also posted some data on this weeks ilog.
Phase camera and general electronic (Allen)
1] Progress on Chassis 3 of the Phase Camera is slow, but developing.
2] Igor has been trained in soldering & desoldering and will be
building
the Piezo drive chassis.
3] Inventory has been conducted on our equipment, with 4 items to be
checked on at sites.
4] Shorted parts and tools have been ordered from Mouser and Digikey.
Simulation and Modeling (Bhawal)
Visit to ICRR (Institute of Cosmic Ray Research)
------------------------------------------------------------------------
---
Hiro visited ICRR during his personal trip in Japan.
There were discussions about the simulation of CLIO, a 100 m IFO using
cryogenic system. (http://www.icrr.u-tokyo.ac.jp/gr/gre.html)
We asked Dr.Hayakawa of ICRR to test the new modeler with dynamic
linking on his 64 bit machine (AL Note: for an AMD PC chip under linux
this is useful to help start the port of the code to 64 bit intel
architecture CPUs).
Fortunately, he found an issue to be addressed, and Melody has worked
on it. (See the report by Melody below)
Mode-cleaner response
--------------------------------------
(Biplab) On request from Malik and Rick (who are currently working
on
Mode-cleaner at Hanford), generated the resonse functions (for
both s-
and p- polarization) of the cavity for an input light containing
various
spatial modes upto 2nd order.
Numerical precision
-----------------------------
(Hiro) The dynamic range of the LIGO suspended mass is large, ranging
from 10^-5m to 10^-20m. The simulation code uses double precision
in
most
of the places, but the pendulum module can run using quad precision
internally. The difference shows up at the double precision
limit. Fortunately, for LIGO I, other noise sources hide this
problem.
But, for adv.LIGO, this needs to be taken into account to do
proper
simulation. A plot demonstrating this effect is posted in the
e2e
section of
the LIGO discussion board (http://ldas-sw.ligo.caltech.edu/enote/).
LLO seismic noise and lock loss
-----------------------------------------------------
(Biplab & Virginio) With the aim of studying the effects of day
and
night
time seismic noise at LLO on its lock loss phenomena, we have
set up
necessary files and E2E-boxes to inject measured seismic noise
to
appropriate BSCs and HAMs in the SimLIGO model.
Article
-------------
(Biplab) Finished writing an article "Physics of interferometeric
gravitational wave detectors" for the proceedings of the International
Conference on Gravitation and Cosmology" held in Jan, 2004 in
Kochi,India.
Dual recycling code
------------------------
(Hiro) Static case debugging is done and now the dynamical case
is being tested.
Code development and maintenance
----------------------------------
(Melody) Modeler:
Working on some enhancements to the FUNC_X code.
Packaged an E2E tarball containing the FUNC_X code along with
other
e2e updates for evaluation at University of Tokyo. While
testing with
an AMD 64-bit Linux system, they encountered an error when linking
with
the shared library. I have been investigating the source
of the error
and have a fix for it.
Worked on the FUNC_X technical document.
Alfi
-----------
(Bruce)
- Reimplementation of connection
building
object in preparation
for completing bundler rework as well
as redefinition
of bundle/bundler syntax in the parser.
(Melody)
Working on executing the user's editor (specifically vi or emacs)
as
the default editor for the primitive settings.
LIGO Data Analysis System
Software Systems (Blackburn)
Using the new instructions for installing DB2 8.1 on Linux we have now
demonstrated that LDAS can be built using the developer's toolkit for
this
version of DB2. All LDAS jobs that use the database have been shown
to
work well with the new DB2. Performance tests are planned as soon as
the
necessary hardware is available to conduct the comparison analysis.
A long term test for memory leaks in the dataConditionAPI has shown
that
the size of the memory leak in that API is independent any concurrency
in
running threads. This had been proposed as a possiblity but is not
the
case. More long term tests are underway to try and isolate any
particular
signal processing actions with the observed memory leak.
A new test script has been developed to randomly remove and add in frame
subdirectories under the diskCacheAPI to further challenge the
reliability
of that API.
There were six problem reports under the diskCacheAPI that were closed
out this week. These problem reports address issues seen at the sites
after the last release of LDAS. In addition, one problem report was
closed
out for each of these APIs: managerAPI, dataConditionAPI, and mpiAPI.
Succeeded in implementing a set of SWIG exposed Globus functions to
TCL
similar to the examples sent down from LBL for Python. Some of these
have
been tested in a TCL interpreter. Exchanged the current state of the
TCL
Globus code base with LBL for comments. Still need to get callbacks
functioning to catch up with the pyGlobus functionality.
One can now find links to the Ganglia Cluster usage on all LDAS websites
under the hardware section.
The performance of the controlMonitorAPI's GUI has been improved by
only
creating needed pages when needed, instead of at startup.
Finished the summary report for the LDAS subcommittee of the DASWG.
This
should be posted on the group's website in any time now.
Hardware Systems (Anderson)
Caltech
-------
(Dan Kozak)
* Verified (outside of SAM-QFS) that we're getting 1:1.7 compression
to
9940B tapes for full frames.
* Wrote up procedure for deleting data and recovering it's tape space
at
LHO which Ben then executed.
* Continued pulling data (old 40m in this case) from HPSS and putting
it
into SAM-QFS.
(Hari Pulapaka)
* Installed ganglia in /ldcg. Wrote directions for installing
Ganglia and working on writing instructions for Condor.
* Working on tclglobus.
* Installed and tested LSCdatafind server and client.
(Al Wilson)
* Setting up systems for condor on the test system.
* Ldas-pctest1 - set up ready to go. Just need to be move
into the
rack in 215 Synchrotron.
* Ldas-test-grid - awaiting replacement mother board for
this system
* Ldas-test-gridmon - configuring system with fedora for gangla
monitoring software.
* Hari has sent me the instructions for setting up a condor cluster.
I will start on this procedure and he will look over my shoulder
if I get into trouble.
* Dmt3 - upgrading to Fedora.
* Replaced disk drives in datacache 3, 5.
* Installed security patches on desktop Sun boxes.
(Stuart Anderson)
* Patched LDAS Solaris servers for local root exploit.
* Last weeks Foundry Ethernet switch backplane firmware fix is
continuing
to work for the LDAS-CIT cluster.
* Worked on keeping LDAS-CIT cluster running efficiently with additional
Condor user.
* Discovered Sun is no longer planning on releasing Solaris Maintenance
Update
patch bundles--very unfortunate.
* Working with John Z. to solve DMT crashing Linux box problem.
* Reocnfigured the last 4 T3 units at Caltech to have a hot-spare disk.
MIT
---
(Keith Bayer)
* Ordering (via Caltech) 20GB hdd's for cluster machines.
* pcraid1 failed rebuild after swapping out bad drive
attempting to copy data off and rebuild array from scratch.
Livingston
----------
(Igor Yakushin)
* Applied security patch to all Solaris servers.
Hanford
-------
(Ben Johnson)
* The backup system has been installed at both sites. This should allow
sysadmins to recover critical files in case of some disaster
to a
host.
* Installed passwd patch on the LDAS Solaris systems: gateway,
dataserver, admin, and ldas-jobs.
* Put 40 more tapes into the L700 as only 23 blank tapes were left
(new
vsns HL0560 to HL0599).
* Working with Hari to set up Condor and Ganglia on LHO's system.
* Cleaned up postS3/ archiver set at both sites (did not recover tapes
at LLO though, my mistake). One Percent script started again
at both
sites, for ????11??? GPS times.
* Continuing work on data glitching. Vern Sandberg and I are collecting
data with the mind to include it in a formal report.
Data Analysis Activities (Lazzarini)
Creighton;
Started preparing an Einstein@home talk for the World Year of Physics
Preparatory Meeting.
Mendell:
Reports on validation, benchmarking, and S2 test results for the
StackSlide search have been posted on the PULG web page,
http://www.lsc-group.phys.uwm.edu/pulgroup/, under the S2 investigations
stackslide link. The code has been shown to find the expected
SNR, to
within 20%, for test data and for the injected pulsar signals into
the
S2 data. The loss is within that expected due to leakage. Doppler
shifts cause the power to not be centered on a resolved frequency bin,
even for simple test cases. However, we plan to set up even simpler
test cases where leakage should not be an issue. We also have completed
code, based on LAL and Matlab, that computes an upper limit on h_0
given
the loudest event using the expected noncentral chi-squared distribution
of StackSlide power when a signal is present. Preliminary estimates
for
S2 H1 upper limits on h_0 have been found for a sample 1 Hz band using
this code. We currently estimate it would take 25 hrs to find
the
loudest event for each 1 Hz band in 300 Hz at UWM for an all-sky search
with one spindown. However, the efficiency of the code can probably
be
improved by at least a factor of 2, and we plan to run on faster
clusters, e.g., at CIT one SFTs are available there. The next
major
task towards finding final results is to adapt existing PULG group
code
for doing Monte Carlo simulations, to measure the actual distributions.
Shawhan:
* Checked various aspects of the S2 binary neutron star inspiral
analysis,
and worked on the draft of the paper.
* Traveled to Sonoma State University to give a general talk about
LIGO
as part of their "What Physicists Do" lecture series.
* Helped Anand Sengupta get his hierarchical inspiral analysis code
to
run under LDAS.
Sutton;
I've spent most of last two weeks readying coordinated software
injections
for the LIGO-TAMA analysis. There are no general software
tools and no conventions for simulated signals that are in common use
through the bursts group, so it's taken longer than I had expected.
I have specified the types of simulations to perform, along with precise
definitions of their properites, and a Matlab script for generating
the
injection lists. We still need the software infrastructure for
perfoming the
injections in most or all of our ETGs, and actual simulations are yet
to start.
In other LIGO-TAMA news, I drafted and circulated 2 proposals for the
LIGO-TAMA ETG tuning, based on the TAMA and LIGO-TFClusters
measured efficiency vs false rate behaviour. I'm currently organizing
talks
on LIGO-TAMA for the LSC meeting.
This week I drafted a set of figures to be used by all subgroups of
the
bursts
group for presenting results of their analysis for different ETGs.
With Sylvestre
I've proposed a simple method for testing the bursts pipeline for a
zero-lag/nonzero-lag bias. I've also done some work on restructuring
the
"Calibrate" C++ class for use in DMT figure-of-merit monitors.
Sylvestre:
o Worked on the S2 burst analysis. Sanity checks on the background
estimation, simulations with various signal injections, retuning with
a
higher coincidence false rate.
Yakushin:
1) On Erik's request generated MDC frames with time shifted injections
and tested them with waveburst .
2) Preparing presentations for LSC meeting.
3) Participated in the preparation of the report by LAL/LALApps
sub-committee for LSC Data Analysis Software Working Group
General Computing (Wallace)
MIT:
(Keith)
-Troubleshooting main raid SCSI-IDE failure on caliburn
-After several more failures, moved gc home directories to backup system
-Specing out possible replacements for gc raid unit
-Ordered cad pc
Livingston:
(Shannon)
-Current bandwidth usage can be seen at
http://teche.ligo-la.caltech.edu/mrtg/LLO-Router/130.39.245.1_1.html
-Archived bandwidth usage can be seen at
http://teche.ligo-la.caltech.edu/mrtg/archive/ under the dated folder
for the week of interest.
-Restored John Zweizig's home directory. His was lost during
the
December crash and could not be restored because of an inode shortage
on the disk that the home directories were being restored to.
The home
directory server is on a linux box now and is running under ReiserFS
which is less picky about the number of used inodes. This is
one of
the last things that I had to get off of baronne before I can rebuild
the OS. NIS+, home directories, and soon the applications directory
will all have been moved to other servers. After it is complete,
I
will rebuild the OS and make the disk array into scratch space for
people to use for analysis space.
-Reconfigured the Cisco 3550 and the PIX so that I can do NAT routing
on the PIX for the meeting. This has been the long term plan
anyway,
however it needed to be done for the meeting since the solution in
the
past has been more of a band-aid fix for the shortage of IP addresses.
This allows us to have ample NAT addresses and also works well for
networking at the local observatory. The addresses are not NATed
until
they leave our border and hit LSU's network. This took a couple
of
nights of emails back and forth to Solsoft to figure out why certain
things were not working like they should. Turns out that I was
missing
a piece of the configuration and it was not a bug in the software.
Solsoft has been an ongoing learning process, but as the network is
getting more complex it has been a real lifesaver. I can crank
out
firewall changes now in a matter of seconds instead of tedious hours
of
pouring through access lists on multiple devices.
-Ordered a PC for Mike Fyffe. His died recently and needed to
be
replaced or fixed.
-Recompiled CERN's root package to fix a problem with a shared
library. I am very near deploying the new applications directory
for
general use.
-The new applications directory now includes updated matlab, CERN
root, GCC and related GNU tools, updated ligo-tools, screen, python,
Tkinter, tcl/tk, and others. I will be going through the old
applications directory to make sure there is nothing important that
I
am forgetting.
-Changed the span settings on the 3550 so that the network monitoring
software would stop getting erroneous information.
-LSU evidently was having problems with their border router throughout
the night last night. It would go from tens of Mb/sec to zilch
and
then come back after a period. Not sure what is going on there
and LSU
has made no announcements. I am sure they are aware of the problem
since it affected the entire campus, but they have said nothing about
it.
-Found some GPL/LGPL backup software that I need to evaluate for our
replacement backup solution. This software seems to have most
of the
features of our last solution but is free. It looks pretty good
though
I have not had time to look into it further since I just found out
about it this past Tuesday. http://www.bacula.org/
-Looking into the required DNS additions that I will have to make for
the new internal network. It is not absolutely necessary that
I set up
DNS for this, but it would be nice.
-Looking into the "ownership" of the old LSU router since it has an
LSU property sticker on it. I believe that we bought this from
LSU,
however we do not have a sticker on it and it is questionable whether
or not we should return it to them. I am not sure if we have
a use for
it, but we'll see.
Hanford:
(Christine)
- Getting ready to remove the last of the ATM network equipment from
the
GC racks. I will be doing the removal this weekend, then rearranging
the racks. There may be some network down time on Saturday morning,
probably less than an hour. I'll announce it before I do it.
- Helped with the purchase of a dell server for the phasecamera project.
- Arranged for the repair of two printers.
- Created new user accounts.
- Restored some lost files from tape to disk.
- Filling out the paper work to renew the maintenance contract for
my
backup software.
- Purchased a new Matlab toolbox for a user.
- Working with ITS support for help with a Pcard software problem.
- Misc. user support.
CIT:
(Mike)
-Swapped out Bob Taylor's workstation with an updated PC. I installed
additional hardware and transferred over users data.
-Worked on Shihori Sakata's laptop searching for viruses. This laptop
came
up clean but was inundated with spyware & adware. This computer
was
scanning
the network for open shares on various computers on the network. I
installed zone alarm and adware 6.0. I have explained to Shihori on
how
this software works. It looks like this laptop is taken care of.
-The printers on the second floor had a few hardware issues. For the
hp5000
it was a one of the EIO that was having a problem. I moved the
jet-direct
card to the other EIO port and everything started working again. The
plotter was also having a problem. I ended up having to reprogram this
unit, which seems to have worked.
-Worked up in Millikan servicing printers. The B/W printer had a paper
jam
and the queue had to be cleaned out. I also worked on the color printer
that included me having to swap out a toner cartridge, drum kit and
transfer kit plus rollers and replace filters. Both these printers
are
up
and running.
-Troubleshot Stan Whitcomb's laptop for it was giving a few problems.
I
went through and cleaned up the registry and updated GC software. I
also
installed zone alarm pro. I ran a hardware diagnostics to make sure
that
the hardware is performing correctly. (All Passed) This laptop seems
to
have been fixed.
-I worked on Janeen Romie's laptop regarding a keyboard issue and
PDMWorks
client installation that went south. I replaced the keyboard and
reinstall
the PDMWorks client.
-Work on a hardware issue that Thomas Frey reported to me. Swapped
out a
cdrom and added a cdrw to his workstation.
-Fixed two laptops from that belong to the loaner pool. Both these
laptops
had hardware issues, which I fixed from another laptop that came in
DOA
and
is out of warrantee also. These laptops are functional once again.
-Had quite a bit of phone and other onsite support that I took care
of
this
past week that included software, networking and email issues.
(Veronica)
-LSC website: Working on a webpage of contact information of the
collaboration. Adding MOUs. Provided assistance to Marie Woods in
setting
up an e-commerce account for the next meeting to handle online payments.
Posting updates to the upcoming meeting website.
- CaJAGWR website: Videotaped and compressed the last talk. Its files
need
to be combined into a single movie and it will be ready to install.
Updated the website and provided some user support.
- LIGO: Usual upkeep. Updated the roster.
I was out this week due to a cold.
(Lisa)
-On sunday night I put a new primary mailserver in place. Initially,
the
upgrade went well. However, a couple of hours of testing showed
there
was a
problem with piping mail through programs. This could not be
resolved
at the
time and looked like it might be a solaris9 problem. I reverted
the
old mail
server and spent the rest of the week building a solaris8 server to
replace it.
- Misc. user support.
(Larry)
-Assisting Lisa on the mailserver swap.
-Placed a couple of orders for equipment and received most of them.
-Worked a couple of logistical issues for the computer room expansion.
Still
waiting on the PMA group to get changes going. We did get a new rack
setup and
ready for the expansion.
-Worked a couple of printer issues. There have been a number of
problems but
they all appear to clear out once the printer has been cleaned out.
-Did some more testing on the WEBcam for both video and audio. Both
appear to
work well. This will be a pretty good tool for presentations but I
still need to
get some better lenses for the camera.
SEI Structure Design/Fab contract:
ASI is applying fewer hours than expected, and the BSC structural configuration is progressing more slowly than expected. Because of the type of work being done currently, it's not easy to add more people to speed things up. Once we're past the configuration design, more labor can be applied. A re-plan is currently in process, to evaluate the impact of the recent slippage.
LIGO provided ASI the current plan for 9 possible payload layouts (BSCs 1, 2, & 3, 2 layouts each; BSCs 8, 9 & 10, 1 layout each). ASI has analyzed these, in addition to two general cases (for structure optimization): having the payload mass spread over the optical table, and having the payload mass concentrated in the center of the table.
Stiffness-wise, the current BSC configuration with the two general cases meet minimum resonant frequency requirements (< 165 Hz) with no problem, ranging from 188 Hz to 223 Hz for the first 4 modes. However, the 9 specific payload layouts are a much different matter. Only 16 of the 36 cases (first 4 modes) meet the minimim requirement, with 19 of the remaining 20 ranging from 84 Hz to 140 Hz! The culprit is the optical table, which has now grown to 6" thick, with a 1.2" skin, in attempts to accommodate. The relatively small footprints of the payload components contribute to the problem. The only layouts for which the current BSC configuration clearly meet the frequency requirement are BSC3-1 and BSC8. The BSC minimum resonant frequency requirement is at risk, and total mass is already near the maximum limit. We are meeting to discuss this.
ASI has calculated mass properties for the 11 payload layouts, for three different keel masses: 633 kg, 431 kg, and 295 kg, depending upon desired Stage 2 CG location with respect to the actuators at the Stage 1-2 interface plane. Brian Lantz is looking at these with his control model to see which of the balancing schemes make sense, and whether we can relax the CG requirements.
The Design Review meeting (for BSC & HAM structures combined) was
originally planned for March 16. This has now been divided into two design
reviews, with the BSC Design Review scheduled for April 6 and the HAM Design
Review scheduled for April 27.
Actuator Testing and Redesign:
The vacuum thermal performance requirements were completed and issued to the potential proposers on 3/5, with proposals requested on 3/15.
RGA scans of "flag" hydrocarbon outgassingAMUs
were made at LHO of the bobbin and coil for the small actuator that was
wound with polyimide insulated (-HML) wire,
using polyimide adhesive (Cycom
3001). This had been previously measured at the 40 m Lab as 3.8E-10 tl/s,
but readings on those systems are now suspect.
The reading at LHO at ambient temperature was 3.6E-11 tl/s.
However, with the oven and sample isolated, the RGA head chamber reading
was 4.5E-11 tl/s. The coil is outgassing
below the sensitivity of the measurement system. Measurements at elevated
temperatures were taken, which show some inconsistencies. These are being
repeated, with additional calibrations and improvements in precision.
Position Sensor Probe Development:
The epoxy coupon hydrocarbon outgassing
tests taken last week at LHO are being repeated, at elevated temperatures
to better characterize their outgassing.
Seismometer Procurement:
This task is on hold pending management approval for SEI structure prototype
fabrication.
Galling/Dusting Test:
Testing continues on the stainless steel plates.
Working with Calum on stiffening up the quad structure.Have made good progress. Larry Jones has provided invaluable interpretation of strain data. We will continue with this through Monday and provide brief report at LSC.
Working with
Reviewed the quad task list with suspension design team on Monday and Tuesday. Names of coordinators look good. Folks generally agreed on quad sections. This is a work in progress and will be used to asign and track tasks and progress. Primavera tasks will be coordinated into the task list table such that progress may be tracked in that manner, also.
Norna and David have provided feedback for the Suspension Controls Prototype Test Plan. I've sent a number of questions to Mark for clarification.
Coordinated with Thomas on suspension schedule.
OMC
===
Drawings for the OMC vacuum chamber and accessories
have been
completed.
Jay and I checked out the output noise of a high
voltage PZT driver.
At around 100 Hz, the output noise was approximately 25 uV.
AdvLIGO PSL
===========
Met with Thomas Frey to go through the cost sheets.
After splitting up
the task responsibilities in the latest cut of the schedule, the various
activity costs will have to be broken out and re-distributed again.
AdvLIGO Coatings
The HfO2 coating run on a 3"dia. x 1" thick fused silica substrate,
30 alternate layers of SiO2/HfO2, failed during annealing. The film separated
from the substrate. A possible reason could be high film stress.
A thin substrate, coated on a different run, will be annealed at a
lower temperature to prevent failure.
The plan is to measure the coating's "Q" on this part to evaluate HfO2
as coating material.
If not improvement is seen, we'll conclude the testing of HfO2.
A number of 1"dia. substrates also have been coated to test different
properties of HfO2.
A teleconference took place with J.M.Mackowski
and
Roger raised a concern about the low absorption results obtained from
the 2 large sapphire substrates recently measured at
DHS: Latest news is that it appears
the
From: Bill Kells
<kells@ligo.caltech.edu>
I have spent some time channeling information
to those presenting at the LSC meeting concerning
optics issues, and the downselect in
particular.
A breakdown of AOS tasks and manpower requirements is being prepared
for the AOS meeting during the LSC next week.
For additional information about this report, contact sanders@ligo.caltech.edu