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The LIGO Executive Committee
Agenda for Monday September 18, 2000 will be:
(Meeting time: 10:30 am Pacific Time)
Open meeting 10:30 - 11:30
Special Items:
No report.
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. . .
| Packages | Faxes | |
| In | 11 | 27 |
| Out | 11 | 33 |
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>
Working on the cancellation of pager service from Metrocall and also Pagenet. Working with Siemens as it appears vendor is duplicate billing us for fire alarm service, which is included in the maintenance contract. Working with purchasing a tractor for LIGO Hanford through the GSA office. Working on UC Berkeley to obtain billings for FY2000.
Closed out FY1999 PO's and provided Dorothy with printouts of encumbrances for a decision to be made whether to release funds and close PO or leave open. Will continue working on closing PO's from last fiscal year.
From: Florence Kaufman <fkaufman@ligo.caltech.edu>
From: irena@ligo.caltech.edu (Irena Petrac)
Rita Torres
Three day report (returned from vacation 9/11): Concentrated on processing a heavy load of invoices which came in while I was away, and worked on tracking some invoice problems. For more detail see "Cost Schedule Control Systems" report by Esther Cunningham. Also processed several requisitions and entered all the requisitions that were processed while I was away (thanks to Rita and Gina), into the LIGO database.
Elizabeth K. Wood
Progress Period from 9.8 to 9.14
Accomplishments:
A LIGO Change Control Board was
held on September 12, 2000. The following change requests were reviwed
and approved:
| CR-990028 | WBS 1.1.3 | Beam Tube Enclosure Closeout (return of unused funds) | F. Asirir |
| CR-000014 | OPS | Additional Support Equipment for Commissioning | D. Shoemaker |
| CR-000015 | WBS 1.1.4 | Repair of Road along Beam Tube Enclosures at Hanford | O. Matherny |
| CR-000016 | WBS 1.4.3 | Early Installation of Linux Clusters | A. Lazzarini |
Press for the latest Contingency Needs Projection.
From: Kris Duncan <kris@ligo.caltech.edu>
From: Irena Petrac <irena@ligo.caltech.edu>
Nothing significant to report.
From: Ed Jasnow <jasnow@ligo.caltech.edu>
The Invitation for Bid for the Livingston Staging Building will be released on Friday, September 15. This IFB calls for a pre-bid conference/job walk on Thursday, September 28, and a bid opening on Thursday, October 19.
An Invitation for Bid has been prepared for the paving of the service roads at Hanford. It is expected that this IFB will be released on Friday, September 15, with bids being opened on Friday, September 22.
General Items:
--------------
(F. Raab)
Commissioning is the front line task this week, but 4K staging continues.
PreStabilized Laser:
--------------------
(M. Guenther & R. Savage)
- Two half-wave plates and a polarizing beamsplitter
cube were removed
from the optical path between the 10-W laser
and the pre-modecleaner.
As a result, the PSL output power increased from
5.9 W to 6.6 W.
- T. Mahood and R. Graff installed an improved beam dump in the 2k PSL
pre-modecleaner rejected light beam. A diverging lens expands
the beam
so that the intensity is below the damage threshold of a "Black Hole"
beam dump from Blue Sky Research. This has significantly reduced
the
scattered light level in the IOO/PSL enclosure.
- T. Mahood, D. Ottaway, and R. Savage are working on optimizing the
optical layout for the WA 4k PSL. It looks like a draft layout
will be
ready by Sep 15 to submit to P. King, et al. for review.
Optics:
---------------------
(D. Cook)
The two ETM-4k Optics are balanced and are staged waiting for the new
OSEMs to arrive. We have the new Core Optic cleaning fixture and will
test
it on the next optics to be processed. We will start the MMT3 Friday
AM and
will follow on with the 2 ITM-4k optics which we now have in the lab.
The COC
optic magnets/standoffs and other sub-assembles are completed and ready.
I
will be submitting a drawing Friday for approval, that will adapt our
COC
transport carriers to fit the new 15CM and 13CM saphire optics. We
have
several ongoing COS tasks being readied for the 4k installation. Betsy
is
ready to align the Faraday isolator in the new staging area using the
ISC
calibration laser. I am going to electro-polish the new PAM screws
to ease
the fit to their brackets. We are having galling problems when they
get
assembled. We continue to update the 4k readiness documents to include
the
IAS and COS requirements. These changes require in vacuum hardware
components to be designed, fabricated and baked.
Seismic Systems, etc.:
----------------------
G.Moreno, M.Guenther, C.Gray, & H.Radkins
Seismic Isolation
*Shipments of equipment and parts have been departing LHO in support
of MITs LASTI SEI buildup.
*Installation is wrapping up and testing is proceeding on the 4k IFO
SEI Coarse Actuation System.
*BSC seismic isolation transfer function measurement is nearing completion
wanting just a noise measurement of the acquisition system.
ISC
*Equipment is in place waiting for a cool windless day to bring the
survey control into the Yend VEA for core optics initial alignment.
*Optical Lever hardware for the 4k IFO is being reworked as required
to match modifications done on the 2k hardware.
Facility
*We are waiting for another big wind day to get a repeat data set on
the warehouse seismic noise measurements
Controls:
---------
(D. Barker)
Making changes with Rolf to LSC and ISC Supervisor systems to support
commissioning work.
Continuing with redbook updates.
Wrote perl code to scan all CDS source code to determine where each
target's object code orginates. Put these data as XML into the target
directory (thePROJECT file).
Attached this information to the web page.
Supporting GDS ATM installation at Livingston.
OPTICS/COC/SEI INSTALLATION: This week's work has consisted principally
of supporting Ken Mailand with the COS installation. Thanks again to Joe,
Gary and Harry for coming in both days last weekend to help Ken. We're
aligning the Optical Levers right now, and preparing for the final alignment
of the BS, both ITMs and the RM when COS is completed. My expectation is
to begin the process of buttoning up midweek next.
(Jonathan Kern)
CDS: This week we completed the fabrication of 1X9. We are ready
to start testing on Tuesday when Jay arrives. Dave R. checked the IO suspension
outputs to the DAQ. There appears to be a small problem with MMT1 which
we will address next week - everything else looks good. Doug is continuing
with the PEM channel characterization. Chethan has starting working on
the video system in the control room - and progressing nicely. We have
also started to develop as-builts documentation. (Rus Wooley, Michael
Fyffe, Doug Lormand, Cheithan Parameswaya)
PEM :Program to collect microseismic peak data is in running on delaronde. It is collecting average power between .1 and .2 Hz every 30min and creating a power spectrum every 12 hours. It is doing this for all nine seismic channels (3 channels on each of the three seismometer - X, Y and corner stations). Program has been checked with both software injected sine as well as signal generator injected sinewave into a DAQ channel. Thank you to Fitra Kahn and John Zweizig for their help. (Anthony Rizzi)
LLO COMPUTING SUPPORT (Shannon Roddy and Tom Evans):
GC: Monday we were having network problems. The T1 to LSU was down most of the day Monday and part of the day Tuesday. After troubleshooting the problem, we rebooted the router and the Excalibur hardware. This seemed to fix the problem. We added several disks and a tape drive for our Windows server. The drives are set up in a fault tolerant RAID 5 array and will be regularly backed up. Upgrading the memory for the black & white printers. Purchased 3 laptops for use around the site and for loaners when LLO staff travel. Dealt with some windows networking problems this week. Purchased several Windows 2000 Professional licenses for the guest PCs.
LDAS: Received the racks for the LDAS PCs. Will try to look at them next week and make sure that all of the parts came in. Stuart said that when they received them at Hanford there were misc. parts missing. Will possibly try to assemble them next week also so that when Gregg and Larry come in they will be ready.
CDS: Replaced one of the Ultra 10’s that was in the LVEA with
a newly configured Ultra 10. The Ultra 10 that was in the LVEA was in need
of some reconfiguration and upgrading per request of some of the people
that were using it. We will look into this and return it into use.
| Installation
& Commissioning:
Livingston |
Other Science/Engineering
Activities:
Issues/Concerns |
See also the Installation web page
In preparation for attempting to lock the full interferometer, much work went into trying to reduce the frequency noise on the light sent to the interferometer. Several sources of frequency noise were attacked:Frequency noise.
Bill Kells
Installed and began exercising
the latest e2e versions and Matt's Hanford 2k locking model.
Parts continue to trickle in for the LHO 4k PSL.
Note by D. Coyne: There is a proposed layout simplification for the 4K PSL/IO table that David Ottaway, Rick Savage et. al. are working on, for review by a large group including both observatories.
(John Worden, Kyle Ryan,
Mark Lubinski)
The leaks at the mode cleaner
flange of WHAM 2 and at Spool WBE-3B have both been confirmed repaired
and the vertex has been repumped.
(Betsy Weaver, Doug Cook)
The ETMy optic was taken
out of the oven and rehung; both ETM units are now wrapped, staged, and
ready for OSEMs. Working on cleaning fixtures.
(Ken Mason)
Completed monument locations for the LHO corner station optics installation.
Autocollimator orientations and theodolite positions are being worked on.
(Hugh Radkins)
Working on setting up Y
end station survey monuments.
(Hugh Radkins, Mark Guenther,
Gerado Moreno)
Performing CAS checkouts
on BSC 3. Found and repaired a missing coil ground return on the multiplexer
relays in the 4 channel rack.
Note by D. Coyne: The LHO 4km interferometer installation is delayed until the QC problems with the new OSEM (sensor/actuator) heads have been resolved and production re-started. It is currently anticipated that a sufficient quantity of OSEMs to enable installation will not be available until mid-Nov.
After the relocation of the
optics, we realigned the EOMs. The alignment of the EOM was done by the
following procedure. We first measured the depolarization of the EOM by
feeding the light transmitted through the EOM to a photodetector through
a cross-polarized polarizer. The power transmitted through the polarizer
and detected by the photodetector (Pt) is the power in the wrong polarization.
Monitoring the photodetector's output, we minimized Pt by adjusting the
pitch, yaw and azimuthal angle (i.e., the orientation of the crystal axis
around the beam path) of EOM. The power rejected by the polarizer (Pr)
is the power in the right polarization. We measured Pr with a power meter,
and evaluated the depolarization by calculating Pt0/Pr0, where Pt0 is the
minimum Pt obtained by the above mentioned anglular adjustment of the EOM
and Pr0 is
the value of Pr measured
when pt=pt0. We repeated this procedure for all three EOMs, one by one.
The depolarization of the three EOMs have been measured to be 9e-6. This
is a factor of two higher than the polarization purity of the PSL beam
(measured with the same polarizer setup without placing the EOM) of 4.7e-6.
After this alignment, we measured the RFAM of the resonant EOM (24.49 MHz) by driving it at 13 dBm (corresponding to the spec modulation depth of 0.5). At a low optical power to EOMs (~0.3 mW), RFAM has been measured to be in a range of 9e-6 to 1.5e-6 over three days.
Note by D. Coyne: The requirement is RFAM < 1e-3 (section 10.2.1.3 of T980009-01)
More PSL beam drift data has been put in the in the e-log.
by D. Coyne & S. Whitcomb: Bill Kells has been requested to review the data. We will hold a Material or Technical Review Board meeting to make a decision on the disposition of the RM01 and RM03.
We looked at averages from
the various data sets late last week and discovered that the radius of
curvature of RM03 is out of spec. It reads ~ 14.40Km The spec
is 14.9Km -0.15 +0.75. The
Radius for RM03 is short by -0.50Km, roughly -0.35Km out of spec.
Over the weekend and early this week we measured RM01, it is reading 15.8Km, 0.90Km long and 0.15Km out of spec.
You may recall that one other
RM was out, 0.13Km long. In sag that equates to less than 1 nm difference,
and so that optic (the LA4K RM) is arguably within range
of the spec given our calibration
uncertainty of 2-5nm.
Other data of interest: the RMs were polished long (change from 9.9K to 14.9K based on the assumption of 5 ppm/cm absorption in the ITMs and a 10 watt laser.
ITMs at Hanford, slated for the WA4K:
| Optic | absorption (ppm/cm) | ROC (14.18, +0.14, -1.0 km required) |
| 4ITM06 | 2 | 13.60 |
| 4ITM07 | 4 | 14.24 |
Yes, there is something strange
going on with the RMs. These were the first optics we summarized in late
'98. The Lab temperature wasn't stable at that time, nor
did we have a great calibration,
there is 2.8 nm difference in sag between the cal file we use now and the
one we were using in '98. The old one was flatter, giving us
slightly (~.5Km) shorter
ROC results. Another variable is that the system was not in good thermal
equilibrium (change ~ 1 degree C/day) during the early days and
for the RM02 measurement.
Fortunately, the RM02 measurement falls well within the spec. Thermal stability
was better for RM04, and has been the most stable for
the RM01 and RM03 measurements
(<0.1 degree C/day).
Summary of Radii of curvature (ROC, km) for uncoated and coated RMs, measured at CSIRO and CIT:
| Optic | CSIRO-uncoated | CIT-coated | Dsag(nm) |
| RM01 | 15120 | 15680 | 6.6 |
| RM02 | 14980 | 15050 | 0.9 |
| RM03 | 15390 | 14400 | -12.6 |
| RM04 | 15000 | 15780 | 9.3 |
The ROC measurement uncertainty
has not been addressed rigorously at Caltech as of yet. In the interest
of comparisons though, I include the following.
Measurement of COC-A001,
a pathfinder piece polished by HDOS:
| Measured By: | ROC (km) | sag (nm) |
| HDOS | 6.097 ±.046 | 461 ±3.5 |
| CIT | 6.08 | 462 |
| CSIRO | 6.06 ±.07 | 464 ±5.3 |
The larger perturbation for the large optic might well be the effect of the PAMs, which are calculated to produce a few percent change in the pendulum mode restoring forces. However, the perturbation for the small optic is a mystery. The most likely possibility is an an error in the input matrix tuning procedure software, but I haven't been able to identify anything wrong yet. Other less plausible possibilities include (i) physical asymmetry of the optics (ii) differences between the input gain values programmed into the controller and the physically implemented values (I checked this for one optic and got very good agreement, but conceivably FMy and MC3 are wrong) and (iii) optical lever problems. I'm planning another trip, probably to LLO, to do some more investigation.
After some revisions and some very good advice from Rich Abbot and Jay
Heefner, we have finalized the design for our satellite amplifiers
(which
allow our old-style OSEM controllers to talk to our new sensor/actuator
heads.) We constructed a prototype driver for one head on a breadboard,
and it seems to work nicely. The next step is to lay out a circuit
board
design and begin manufacturing the real thing. This week we have
also been
working on the new control electronics for our suspended mode cleaner,
and
on the photo-thermal noise experiment.
Management & planning:
Reviewed and revised the
LASTI schedule; it is now in a state to be
immortalized in Primavera
Data & diagnostics infrastructure;
DHS worked on the
DAQ/GDS design with Daniel and Rolf
Interferometer:
Coordinated PSL configuration
and physical footprint
with Peter King. Moving
large AutoCad files around.
SEI installation:
Floor drilling for SEI supports
is going slowly due to the stainless
steel rebar in portions
of
our floor (placed by prior
tenants, a magnet lab). The diamond core
drill takes over an hour
to chew through each SST bar we are
unlucky enough to hit (PSI
had the same problem
anchoring the chambers).
Matt and Ed are trying various workarounds
(tungsten carbide? plastique?)
to speed
things up.
Removing the VCT tiles in
the areas to be grouted is also proving
slower than anticipated.
The flooring's adhesion has evidently
increased since PSI anchored
the chambers last year.
Cleanrooms:
We had an unexpected windfall
when CSR shipped out the HETE satellite last week;
their fully-equipped 12'x16'
(HAM-size) class 100 assembly
cleanroom is now available
to LIGO free of
charge (CSR needs the floorspace
now for the HETE data/operations center).
We signed up a rigger to
move it to the LASTI high bay next week. The rigger
will also move the current
PSI HAM cleanroom over to the left arm. This
leaves only a BSC cleanroom
for us to procure; this is being custom-designed in
collaboration with
Larry Jones to support the planned
"cartridge" SEI/SUS installation
test.
The latest End to End software
package, simulation programs and
GUI alfi, has
been installed at Hanford, being built
at Hanford from the source codes.
The effect of the misalignment on the
stability of the Lock Acquisition of the
full Hanford 2k IFO was done by
Biplab, based on the Han2k package
mentioned
above. The angular fluctuation
spectrum used is a simple model by
Luca inspired
by the measurement at the Hanford
2K one arm run. Instability was
observed
when the magnitude is above some
value. Biplab is working to summarize
his
result.
Simulation work plan
Biplab, Luca and Hiro got together to
discuss the works of the near future.
Biplab will keep working to perfect
the primary noise sources of the full
LIGO in-lock state simulation, i.e., the
seismic, thermal and shotnoise. He has
made e2e modules to simulate the
HAM and BSC stacks based on the
parametrization done by Ed Daw. He
is gathering mechanical parameters
to generate more realistic noise curves
for the three IFOs.
Luca is going to work on the
modification of Han2k to implement
WFS/ASC,
together with Hiro. Hiro will
implement the 3D suspended mass
which is
actuated by 4 forces. Luca will first
test the ASC matrix to compare the
model
and the design. He then will
implement the WFS and control
systems.
Hiro is going to implement a simple
thermal lensing so that the e2e
simulation
with the actual mirror curvatures
(14.9k RM) does realistic simulation.
Alfi
Ed has almost completed the update
of the graphics rendering of alfi,
which will realize more robust
graphics front-end and more leaner
code implementation.
Bruce is working on the internal data
management to make sure that the
update of the disk files are done
correctly.
Profiling
Ottavio D'Angelis has arrived to work
with the e2e simulation group.
First task is to analyze the profiling of
the e2e simulation code.
With the help of Ed, he built static
code of simulation programs with
proper tags in it for the profiling.
Han2k was used as a test case, which
uses scalar fields and is composed
of1000 modules. Nothing surprising
was found so far, as opposed to the
last case one year ago. He is going to
see the details.
He will soon analyzae a modified
version of Han2k provided by Biplab
which
uses multi mode fields. The simulation
pf multi mode fields will slow down
the run by factor of over one order of
magniture.
He is using gnu prof, but has found
that SUN workshop profiler has
useful
features which are not available in gnu
prof. He will use SUN prof when
necessary.
Meeting in October
Hiro wants to have an e2e meeting to
have people at Caltech interested in
e2e
to discuss the future collaboration. He
contacted several people trying to
organize one sometime in the
beginning or middle of October.
Documents
Biplab is working to revise the draft
of the e2e paper, which is till very
preliminary.
Hiro is preparing a memo for the
LIGO II proposal.
Software Systems (Blackburn)
Documentation on the LDAS build procedure continue to be developed this
week. An attempt by the new dataConditionAPI member from University of
Florida indentified several new problems with the instructions. These
are expected to be incorporated by Friday of this week. In addition to
these build tests have identified several "better" ways to configure
the build scripts and improve their portability.The threaded ILWD socket transmission tests continue to be a problem. It
was demonstrated that these tests are strickly isolated to Linux hardware
and more specificly, only to SMP linux platforms. There is also a general
set of correlations between this failure and the strange failures of some
tests of the dataConditionAPI to suspect that they are related. A new
release of the glibc library which included a pthread fix was released
this week, but test late this week show no improvements in the problem
when using this library. At this time it seems to be most closely related
to running on Linux SMP platforms, an area which the Linux kernel group
has identified as needed improvements for the next big kernel release.The LDAS system now has enough functionality in the controlMonitorAPI
to monitor and detect low disk space and other database errors and to
notify LDAS operators via email when these database conditions occur.Peter Shawhan has continued to work on the database MDC this week. His
MDC Plan document is being distributed and he has notified the members
of the LSC ASIS and Detector Characterization working groups of the
plan while at the same time made a request for volunteers and participants
to support the MDC activities outlined in the plan document.The limited URI support that existed in LDAS for pushing output data
products has now been extended to support anonymous FTP of data to
remote sites such as LSC home institutions. It will next be extended
to support http_puts to remote web servers giving the LDAS system full
URI support for the input and output protocol command line options.The wrapperAPI now only needs two more command line options needed to
fully support the command line parameter set outlined in the version
12 release of the baseline requirements and implementation. Performance
tests using the flat binary inspiral search library from UWM show that
the last communication option { -communicateOutput } implementation
has decreased the communication costs by 10s to 100s over the already
impressive 150x improvements mentioned several weeks ago. These can be
used to make communications cost almost measureless on large clusters
of nodes as the example using 1000 templates below illustrates
[time spent in communications{time spent in filters}seconds]:nodeDutyCycle commOutput=ALWAYS commOutput=ONCE
10 [0.359{150.2}s] [0.005{151.8}s]
100 [0.355{148.1}s] [0.041{152.5}s]A new release of MPICH (1.2.1) was finally compiled this week after
plenty of email exchanges with the developers to report bugs in the code
and the build procedures. Unfortunately, the claims that the problems
with exception handling found in the previous release was premature. We
still see the same exception handling problems and have reported this,
along with our recommendations on how to solve it after investigating
the failures in their code, to the development team.Over the weekend Alan Wiseman and Patrick Brady from the UWM group
visited Caltech specifically to meet with Kent Blackburn and Albert
Lazzarini to discuss changes to the wrapperAPI. The meeting lasted 10
hours. Minutes from the meeting are available from the mpi group
website (this will be made available under the LDAS webpages soon).
The meeting resulted in several significant changes to the design
and philosophy of the wrapperAPI. However, most components will only
see minor iterations. Chief among the significant changes in the
removal of the indexing schema. This adds flexibility to the design
of search algorithms while at the same time demands greater overall
responsibility of the shared objects which will need to be verified
more closely during MDCs. In addition, the requirement that code
must be parallel in its nature was relaxed and a less deterministic
mechanism for slave communications with the wrapperAPI put into
place. This meeting was very useful to all in attendance to sort
out reasons and motivations for choices on both the wrapperAPI and
the dynamic shared object sides of development.
Hardware Systems (Anderson)
A tcl script has been written to
backup data IFO frame data 24/7
during
the upcoming engineering runs using
an AIT 2 tape robot/library. The
script
is currently being tested and has
the following features:1) Maintains a log with all commands
issued, diagnostics (such at data
flow rates) and a library of tape
locations.
2) Emails the operator when magazine
become full written to, when errors
occur, and when falling behind the
framebuilder.
3) Operator can configure number of
times to retry command, time to wait
before retrying,
and time to pause after completing a
command. (Allows the script to run
continuously while an operator
changes magazines.)
4) Prints and emails info in the
unlikely event a crash occurs to
allow
an operator to quickly restart the
script.
The electrical work for the Caltech
archive LDAS machine room has
been completed.The final order for a 16 node
development beowulf cluster has been
placed.A test between a Foundry Networks
Gigabit Ethernet switch, a CISCO
switch
and two LDAS Sun E450 servers was
successfully completed.A major CACR HPSS upgrade has been
completed. However, user accounts
are being reworked for a more
integrated system of account
management
between all of the CACR resources.
It is anticipated that HPSS ftp
accounts used to access the LIGO
archive will be available in a few
days.A ~2TB Fibre Channel RAID system
from DotHill has been received for
evaluation.
Benoit Mours has created a charming educational outreach www page that was prompted by a request from Marcia Bartusiak for "The Sound of LIGO". It is available off the "NEW" items list at the top of the LIGO Home page. Suggestions for improvement are always welcome (though they may not get implemented due to workload -- volunteers are always welcome, too).Data Analysis Activities
Philip Charlton:
* Other activities: I've spent a little time this week on some
work with
Bernard Whiting, we are starting to convert some data analysis
code to fit
the LAL standard so that we can submit it to Jolien.
I've also written some code for reading frame data and
processing it with
Tom/Jeff's FCT code. At the moment I'm using 40m frame files to
test it.
Livingston:
-The T1 to LSU was down most of the
day Monday and part of the day
Tuesday.
After troubleshooting the problem,
we rebooted the router and the
Excalibur
hardware. This seemed to fix the
problem.
-We added several disks and a tape
drive for our Windows server.
-The drives are set up in a fault
tolerant RAID 5 array and will be
regularly
backed up. Upgrading the memory for
the black & white printers.
-Purchased 3 laptops for use around
the site and for loaners when LLO
staff
travel.
- Dealt with some windows networking
problems this week.
-Purchased several Windows 2000
Professional licenses for the guest
PCs.
Received the site license disk for
Office 2000 from CIT and will be
installing
it on various machines.
-Larry has been talking with
Bellsouth and will be meeting with
them at the end
of the month. The main discussion
will the present fiber installation
and
connection costs for more bandwidth.
Hanford:
(Christine)
Working on FY end purchases of:
more PCs for new hires and upgrades
to
older computers; more disk space for
user accounts, e-mail and to setup
an anonymous ftp location; a tape
drive for fortress, the LSC
"sandbox"
machine; upgrading all PCs to MS
Office 2000 Pro and Adobe Acrobat
4.0;
and upgrading Sun compilers to
latest version.
CIT:
(Lisa)
-resolved a scp from blue.ligo-wa to
luna.caltech.edu problem. This
should help
simplify the transfer of files from
Hanford to here.
-Did some Cadence community service
work. The IC portion of cadence is
now
available if anyone wants to use it.
However, it seems that to be useful
IC
requires the presence of a Design
Kit with libraries from the
manufacturer of
the hardware.
-Resolved with the telephone office
that we can have a couple of ISDN
BRI lines
added to our modem pool when we are
ready to upgrade.
-Currently working with Peter King
to resolve issues with the epics
software.
It turns out that it does not
broadcast across subnets. This
makes it difficult
to fully transition off of kater
onto luna. We have a couple of
options that we
can try out to get around it.
-Got the daily & weekly backups back
in order. The tape robot on
Rastaban (and
Rastaban, too) are old and getting a
little glitchy. Along with this we
are now
getting successful daily/weekly
backups of ldas-sw as well.
-Verified that both our Matlab and
our Mathematica installations are
compatible
on solaris 2.8.
-Transportation came and picked up a
big load of surplus equipment out of
Wilson
House.
-The usual round of PC support. The
only big problem was Ben Abbott's PC
couldn't find its OS. Sam fixed
that up for him.
(Sam)
-Burn Cd's, Imaged a number of PC.
-Built a number of computers
-Worked on purchasing a number of
items for video and PC work.
-Documentation and working on web
page building.
physical therapy (every day)
(Suresh)
-Assisted Stuart Andersion for doing
some network connectivity tests in
synchrotron lab. This included two
Sun 450s and two Gigabit switches
between
them.
-Downloaded two evaluation copies of
network sniffer packages from
Network
Associate web-site and analyzing
their performance as network traffic
monitoring
tool.
(a) Sniffer Basic. It runs on
Windows 95/98 and provides basic
monitoring and
decode analysis capabilities.
(b) Sniffer Pro Lan. It runs on
Windows NT platform. It is designed
for full
expert analysis of network packets.
I am still investigating for
Sniffer packages that have some
built-in security
features.
-Working on to surplus some
unneeded, malfunctioning HP printers
and PC
hardwares.
-Installed Solaris 8, required patch
clusters and softwares on one Ultra
30
and one Ultra 10 systems.
(Larry)
-Worked a number of purchasing
issues. There are a number of items
on order
including networking equipment,
PC's, projectors, Mac upgrades and
software.
SUN has committed to sending a demo
copy of Solstice Backup suite to be
tested
before purchasing it.
-Presently, working with the CIT
electronics shop people on getting
the fiber
termination's moved from the phone
closet to the computer room while
they are
installing the new fibers to
Syncrotron.
-Worked on a few of the new
installations and debugging a few
items.
The SUN PC board works but a few
more items need to be worked out so
that more
s/w can be loaded on. More memory
will be needed for a few of the
machines.
-Larry Wallace organized a teleconference with Steve Corbato and Laurie
Burns from the Inet2/Abilene consortium. Lazzarini and wallace participated
in the teleconference. The purpose was to better understand what will be
involved in going to OC3 at both sites. Since Caltech, MIT and LSU are
already consortium members, all thatis needed for LIGO to gain access to
Abilene is for Caltech to designate us as a sponsored activity. Caltech
representation in Inet2/Abilene is through ITS. Lazzarini has recieved
materials and will discuss with Barry how to proceed. We learned that the
going rate for OC3 in the Seattle area for comparable distance runs to
the Livingston-Baton Rouge run is ~4X-5X CHEAPER. It is a question of how
many carriers are in the market. In Louisiana, the business is apparently
cornered by BellSouth. We are presently requesting quotes from them. In
the northwest, Corbato confirmed that our approach through ITS at Battelle
(John McCoy) is the appropriate way to proceed. He volunteered to get involved
at any point of negotiations if we hit a snag.
-Resolved a number of system issues
that were all pretty minor.
(Barbara)
- Finished first iteration of the
database and web forms for LDAS
equipment
inventory. There are add, edit,
delete, search, and display forms.
So
far, no response from user.
- Resumed work on Roster database.
Created web forms to search for a
staff
member by name and location.
Working to create the roster web
page out of
the database.
- Made a number of quick web site
changes to LIGO and LDAS sites.
LIGO II PSL
Peter King
I have been working on the costings for hardware, pretty much all
the opto-mechanical quotable items have been quoted. I will look
up how
the costing risk factors are formulated in the Cost Book, so that I
can
work out some costing stuff in a spreadsheet.
LIGO-II SUS
Janeen Rmoie
Working on Advanced LIGO costs and the WBS dictionary.
LIGO-II Interferometer Simulation
Bill Kells
Have completed a first round of comparison of MELODY and FFT runs.
For elementary set-ups they agree, after the usual amount of
insignificant
bugs and misunderstandings between notations and conventions were
resolved.
Have begun an upward spiral of more complex set-ups which show some
interesting
results.
LIGO-II Sapphire COC
Bill Kells, Jordan Camp
Collaborated with Jordan on interpreting m-cut sapphire coated mirror
cavity birefringence.
LIGO-II AOS
Mike Smith
A preliminary draft of the AOS Reference Design is in process.
From: Virginio Sannibale <vsanni@ligo.caltech.edu>
Riccardo:
brain-storming in Japan.
Akiteru:
improved considerably the IP attenuation with the new counter design.
Plateau in transfer function after the ip mode at 60mHz
at about -65dB. 40dB of attenuation @ 1Hz. Bringing to
lower frequency the ip (20mHz) mode we can get a good passive
attenuation of the microseimic peak.
Next step is to bring down to 20-30mHz the IP mode.
Virginio:
Continuing the work started with Giovanni lo Surdo and Ruggero Stanga
on the inertial damping on the complete LIGO-SAS chain (The Virgo
accelerometers need to be sent back with in 3weeks.)
Diagonalization process terminated successfully with a surprisingly
better result compared to the previous set-up ( the systems now is
much more complex).
The digital control software is performing better after very few
modifications.
Next step will be to blend the 6 sensors to create a set o 3 virtual
sensors and also try to separate control loops one for the accelerometers
and one for the position sensors.
Francesco:
Back to Italy.
Oven and LVDTs. Data taking of temperature and LVDT data has been going
on
for three days. Correlations with room temperature are there. Next
step
would be to thermostabilize at least the analog LVDT readout board.
First
investigation on how to combine temperature and LVDT read out programs.
Acoustic emission. Data taking has been going on for the whole week
on a
very high loaded maraging blade spring. The blade has been flipped
up side
down so that applied stress and dislocation velocity change sign.
Further load was applied during the weekend, requiring to shorten the
suspension rope. Events with high energy above 100 kHz has been recorded
are there,
investigation is going on to confirm identification as creep events
For additional information about this report, contact sanders@ligo.caltech.edu