The Project Control Meeting Agenda for Monday April 26, 1999 will be:
CANCELLED DUE TO NSF REVIEW
Weekly
Report Highlights
LHO BSC4 stack about completed
LHO ITMy-2k and FMy-2k large optics lose magnets, aborting
installation
Magnet bonding studies continue
Facilities:
-----------
O. Matherny
Water System modification: We will overrun this contract to add two
more
water level sensors. We need a Low Low water sensor to tell the
irrigation system when to shut off and a High High sensor to give an
audible signal if the tank is overflowing.
New staging Building: The contractor is installing the siding for the
building.
Compressors: No change.
Bake Oven:
----------
(K. Ryan)
LHO Vacuum Bake Oven A load #27 (consisting of beam splitter LOS
structure s/n D9705060-C-D-003, 20 Kapton cables and various PEM rga
components) was released earlier this week. The LOS structure did not
get
dried completely prior to being loaded into the oven which resulted
in
water appearing in the foreline of the pumping system. This took the
form
of higher than normal foreline pressure but had no noticeable effect
on
the post bake rga scan. We eventually valved off the UHV portion of
the
system and introduced viscous flow to the foreline components (opened
the
foreline to atmosphere while pumping) which effectively removed this
water.
Load #28 is being loaded today and consists of two BSC bellows and 40
Kapton cables.
I have suggested to Bartie that he refuse to bake
items until travelers
are provided to him. He has found himself in
the situation that I had
experienced where he is being asked to originate
travelers for parts and
is getting behind trying to determine "drawing
numbers", "higher order
sub assemblies" PO contract numbers etc..
I think that the Cog Engineers
ought to provide this info. in the form of a
filled out traveler.
Seismic Isolation Installation:
-------------------------------
(C. Gray, H. Radkins)
BSC 4 work
V-Blocks installed (4/16); had some trouble with the thru holes of the
V-block caps. The holes are too deep and have too tight of a diameter
tolerance to allow bolts to adequately engage in the V-block bases;
because of this helicoils for 3 V-blocks were damaged (crossthreading).
This problem will be remedied for future.
Large conflat of the bellows were installed (4/16-18). Many thanks to
David Shoemaker and Stan W. for their weekend work.
Stack installation went fairly smoothly (4/19-21).
One of the Leg
Elements for the top stage had damaged threads and will need to get
reworked/cleaned. Had the same problem with one weight on BSC 8; this
is
mainly because one of the lifting fixtures we use is a bit cumbersome
to
work with. Currently, stack installation is fairly complete; all
springs/masses are installed, the Downtube is positioned on the stacks,
and all electrical cabling work for the "top" portion is complete.
What
remains is the remainder of the electrical cabling installation, the
installation of the payload (weights) onto the Optics Table, level
check
of the Optics Table, and placing the dome back on the chamber. A
big
thanks for all the help we received this last
week.
PreStabilized Laser:
--------------------
(Rick Savage)
It appears that the diurnal PSL power drops are correlated with laser
head temperature increases. Examination of the EPICS record also shows
that the laser frequency (SLOW actuator voltage) varies in concert
with
the head temperature. The signals peak at about 8:00 PM most days.
The
outside temperatures peak at about 4:00 PM and the LVEA temperature
monitors show very little variation and no feature at 8:00 PM.
Suspecting a time delay in the thermal response of the building
structure, Josh Myers and I set up thermocouples and a strip chart
recorder in the interstitial space that houses the laser water chiller
to monitor the space and water temperatures. We are in the process
of
analyzing the strip chart data and comparing it with the EPICS record.
A. Rizzi, B. Bhawal, H. Yamamoto and I met via telecon last week to
discuss the PSL e2e model progress. Biplap and I will sketch out a
schedule for the PSL modeling and we will discuss it during our next
telecon on 4/26 at 9:00 AM.
Optics:
---------------------
(D. Cook & B. Weaver)
This week we have been concentrating on installing
processing, rehanging
and installing the ITMy-2k and FMy-2k. The ITMy lost a face Magnet
while
undergoing the razor blade test shortly after coming out of it's bake.
The ITMy has been shelved until the gluing process is re-thought out
and
approved. Moving ahead with the FMy-2k optic installation, we encountered
some alignment positioning limits with the fixture that became show
stoppers, on the first attempt. We are proceeding with some modified
tooling and techniques that should allow us to complete the installation
by week's end.
This is the first attempt at setting a real optic into a BSC chamber
and
the FM mirror presents some additional challenges, so it is to be
expected that problems would arise. "Murphy" wouldn't have it another
way. We will get the optical lever set and running to track the FM
alignment. [GHS note: Ah Murphy...As this report
is compiled, the FMy-2k installation
has proceeded with the new tooling and techniques.
This did indeed go easier
than with the original tooling. However, an out
of level table led to a magnet
being knocked off this optic as the chamfer stops
were backed off. Thus,
this optic has now been removed and joins the
ITMy-2k to await a new
gluing process. ]
The optics lab and vacuum preparation labs are having some additional
power and cable trays added. We have gone through and cleaned and
reorganized the optics and vacuum preparation labs and I
have asked that
people working in these areas be better at cleaning
up after themselves
and secure their items properly and label them.
Don't wait for hurricane
"Betsy" or myself to clean up the labs, as those
results could be
unpredictable.
Computing Systems:
------------------
(C. Patton)
Discussed with Dave, Fred and Rick which network the GRASP software
should be installed on. Finally decided that in the long run
it should
reside on the LDAS network. Until LDAS is available, Rick will
install
it on the CDS network.
Tested setting up user accounts on the modem router. So far the
only
user who can login is root. It's trial and error trying each
different
combination of configuration options to find the correct ones which
will
allow user login. The obvious ones don't work and the documentation
is
not helpful.
Also, I spent some time working on budget reports, added a couple of
new
user accounts, helped visitors with file transfer and email setup,
and
did the weekly backups.
Beam-Tube Bake Out:
-------------------
(M. Lubinski, M. Guenther, and W. Althouse)
FJR standing in for 'Ski: A failure of a small turbo backing a larger
turbopump at one end of the beam tube caused some air to 'burp' back
into the beam tube earlier this week. It appears not to have caused
any problems beyond the hassles of dealing with the failed pump; we
still expect to be shutting down the big power supplies on this last
module this weekend. Rai expects to be out around May 4 for the final
round of RGA measurements.
We are preparing the PSL components for vacuum bake. They should be ready early next week. It looks like the bake oven will be very busy for the next few months. (Allen Sibley, Tom Evans)
Bakeout Preparation: PII continue to work on the X-2 module.
PII has completed approximately 85% of the module insulation. PII has increased
their work force to 16 employees, 6 employees are cutting insulation material
in the staging building and 10 employees are
installing the cut material on the Beam Tube module X-1 and X-2. PII
has given LIGO an estimated completion schedule for X-2 module insulation
installment of 4-24-99. We continue to order and receive consumable supplies
for the bake out. Two Power Supply Trailers and one load of support equipment
were shipped from LHO on 4-21-99. This equipment should arrive at LLO some
day during the week of 4-26 thru 4-29-99. The X and Y arms BTE were treated
this week for Pest Control. (Cecil Franklin, Kerry Stiff)
Weather Station/Suspension Test Stand About 20% of C code written to collect data from data logger of professional weather station. This 20% has been checked and compiled using gcc on the Sun (Gcc on Sun has problem finding libraries). It also still needs to be compiled using cc68k for VxWorks. James Finney says he will hardwire data logger today. Troubleshooting problem of running c-code accessing tty1 port with epics running. Servo Stand awaits computer area on LLO1 for cross-compling C and state notation code. (Anthony Rizzi)
Facilities: The off hour security service has started and so far is working OK. We are providing them with a vehicle to patrol both end stations and an outdoor key to ensure all of the buildings are locked after 7 PM. They also lock the cattle gate after 9 PM. Anyone arriving at LLO after 9 PM and wanting to come on site should make arrangements to get past the locked cattle guard.
Work on the access road is continuing. The road work requires that the
telephone lines for LLO be moved. This will interrupt our communication
system. We are trying to get in contact with the appropriate people at
Bell South to coordinate this move and minimize its impact on us. (Gerry
Stapfer)
----------------------------------------------------
DETECTOR GROUP -- Whitcomb/Shoemaker
(WBS 1.2, 1.3)
----------------------------------------------------
40 m Interferometer (Bill Kells/Nergis Mavalvala)
---------------------------------------
No report received.
----------------------------------------------
Interferometer Sensing and Control -- M Zucker
(WBS 1.2.1.1.6, 1.2.1.1.7)
----------------------------------------------
No report received.
-------------------------------------------
Lasers and Optics -- J. Camp
(1.2.1.1.2, 1.2.1.1.3, 1.2.1.1.4,1.2.1.1.5)
--------------------------------------------
Prestabilized Laser -- Peter King
--------------------------------------------
- Construction of the PSL quad photodetector and decoder has been
completed. Basic tests of the encoder and photodetector have
been
conducted and both work fine with an HeNe laser.
- A few bolts that were missing in the IOO/PSL optical table enclosure,
which hold the two halves of the enclosure together, have been installed.
This has straightened the structure of the enclosure.
- The IOO/PSL optical table enclosure has been wiped down, from top
to toe,
in preparation for installation of the laser.
- Cabling within the PSL electronics rack has been completed.
The
remaining connections to be done are those between the rack and the
optical
table; the laser power supply and the water chiller; and the laser
and the
water chiller. The plumbing lines were already installed during
the
previous visit.
- The 10-W laser will be placed onto the IOO/PSL optical table by the
end
of this week (04/23).
- The circuit for the 10-W laser water chiller in the East Storage Wing
of
the LLO LVEA was found to be faulty. It has been replaced.
Thanks Rusyl.
Input/Output Optics -- Dave Reitze, UF
-----------------------------------------
Haisheng has performed one of the most thorough investigations to date
of
the epoxy problem. Please see Helena's report below.
Sany is following up on some of the measurements Peter made last week
on
the excess and dynamic RFAM. One suspect for the dynamic changes is
temperature fluctuations in the EOMs due to environment. He placed
a
thermocouple to the box of the EOM, closed the laser table enclosure
and
measured the temperature with the fan on. Under this condition, the
temperature fluctuation was <0.5 deg. Analysis of the influence
of
this level of temperature change to the RFAM is underway. Ultimately,
we
may want to provide passive (active?) temperature control.
The machine shop is working on the newly designed
small optic gluing
fixture.
Livingston 4-k IOO
SOS construction
The uprights for the towers have been completed by the EDM shop
and shipped to Gainesville.
Core Optics Procurement and Metrology -- GariLynn Billingsley
-------------------------------------------------------------
We are in the process of completing a three flat measurement which was
begun last week. Data gathering has been slow due to increased
vibration. We have been analyzing different averaging techniques
in an
attempt to overcome the increased noise, and found in our last two
measurement positions that roughly 10 out of 220 data sets met the
acceptable criteria.
We attempted to quantify the degradation in data due to the machine
shop
relocation beneath us by employing a 16 hour run looking at Astigmatism.
With a single finge in a flat-flat cavity, vibration shows up
in the
astigmatism term. The run was not successful because of excessive
fringe drift due to thermal variations.
Core Optics Coatings -- Helena Armandula
--------------------------------------------------
Bonding issues:
Tests performed during the last two weeks gave
the following results:
1) 100C cure gave stronger bonds on an average.
2) No changes in magnet strength were observed
after 100C cure
3) More indications that cleaning process weakens
the bond.
4) Glue-dumbbell bond stronger than glue-magnet
bond confirmed.
Testing results on 6 dumbbell/magnet assemblies:
After curing all glued joints held the full weight
(3.3 kg).
Further testing:
Testing the joint strength after putting the
magnet/dumbbell assemblies
through a mock cleaning procedure.
Four units were tested after the cleaning.
1 unit broke at 1.44 kg,
1 at 2.09 kg,
1 at 2.71 kg, and
1 broke accidentally.
Two days later, we continued the tests with the
2 remaining magnet/dumbbell
pairs, but they both broke at 2.8 kg when trying
to see if they would hold
the weight they held 2 days before. They had
not been cleaned.
The questions are open whether the bond degraded
or the strength test is
not reproducible accurately enough. Each time
the dumbbell is pulled in
another direction. Also the duration of the stress
is a variable. We'll
look further into time degradation possibilities.
In the meantime we are
testing dumbbell to glass bonds.
Pictures of the testing set-up can be seen at:
http://www.ligo-wa.caltech.edu/~rong/EpoxyTest/
Post vacuum bake cleaning:
Scatter and mirror's loss measurement will be
performed on epoxied, oven
baked and vacuum outgassed test pieces to observe
the effects of outgassing
on mirror's surfaces.
If the effects are negligible, the cleaning procedure
will be modified.
Core Optics Support -- Michael Smith
------------------------------------
PO TELESCOPE
SORL estimates that polishing will be completed for 6 sets of parabolic
mirrors by 5/12. A further schedule update will be given on 4/28. 4
sets
will be sent to REO for HR coating.
ETM TELESCOPE
Ken M. has received quotes from fabrication shops and has placed an
order
for a first article ETM Telescope.
CAVITY BEAM DUMP
Paul K. has completed detailing of the flexure mounting brackets for
the
horizontal support structure. Craig C. will complete the shop drawings
for
all the remaining mounting structures for the cavity beam dumps in
BSC8
this week. Fabrication for the beam dump support structures in BSC8
should
begin the week of 4/26.
ELLIPTICAL BAFFLE
Mike S. is at LHO this week assiting in BSC4 stack installation and
other
items, and getting trained in clean room procedures. Betsy W. will
assist
him in cutting the access holes for the optical lever beams in the
RM
elliptical baffle glass at LHO. The installation of ITMy elliptical
baffle
is indefinitely on hold until the ITMy is installed and aligned.
--------------------------
Isolation Group -- M. Fine
--------------------------
Seismic Design (Mike Fine)
--------------------------------------
1. Scissors Tables:
The spring cup holes for the Superior Jig's scissors tables were measured
to
be within tolerance. So the problem of fitting the spring cup,
reported last
week, is due to out-of-spec external thread of the cup. Superior Jig
has now
been cleared to ship the rest of scissors tables.
2. Electronics Rack:
Hytec is working on the 2nd rack assembly. This second rack is
being
scheduled for shipment to LLO by 6/1. It will contain multiplexing
for
three BSC chambers.
3. Near-Term SEI Hardware Delivery Schedule:
2 sets of HAM springs (Livingston)
4/28/99
2 sets of HAM springs (Livingston)
5/5/99
1 set of BSC springs (Hanford)
5/5/99
2 BSC Downtubes (Hanford)
5/5/99
1 BSC bellows (Hanford)
5/7/99
1 HAM bellows and 6 BSC bellows (Livingston)
5/7/99
4 BSC bellows (MIT)
5/7/99
Suspension -- (Janeen Hazel/Mark Barton/Mike Fine)
-------------------------------------------------------------------
1. Report form Janeen:
-Working on redesign of LOS fixtures to allow for mounting and baking
6 magnet/standoff assemblies.
-Wrote traveler for LLO structures. Coordinating with Bardy at LHO
to
complete the last traveler for the structures they have.
-Received the fluorel chamfer stop tips from Molding Solution. Yehuda
will clean and hopes to start baking them Friday. He will send them
to Walker & Sons when they come out of the oven.
2. SUS Hardware Delivery:
SUS Structure Delivery Dates: [numbers in parentheses are quantities.]
LOS1(for ETM, ITM, MMT): 4/25(1)
LOS2: 4/25(1)
---------------------------------------------------------
Detector Systems Engineering -- D. Shoemaker/D Coyne
(WBS 1.2.1.1.9)
---------------------------------------------------------
Global Diagnostics System
(Daniel Sigg, John Zweizig)
Have continued to develop and to test the online analysis and display
tools
for use under root. Have also begun to prototype the trigger record
generation functions which will be used first in the imminent 40m data
characterization exercise.
Work on the diagnostics test supervisory program continued. The design
of the corresponding object hierarchy was finished. A new chapter was
added to the FDR documentation describing the test organization and
interaction with storage, excitation and RTDD (real-time data distribution)
APIs. Also received a new chapter from Peter F. describing the sine
detection algorithm.
Physics Environmental Monitor(Matt Smith, David Shoemaker & Alex
Marin)
-----------------------------------------------------------------------
The updated delivery schedule is posted at :
http://web.mit.edu/marin/www/PEM_Delivery.html
Installation and remaining minor design continues.
Optical Contamination (Daqun Li)
--------------------------------
No report received.
-----------------------------------------
Control and Data System -- R. Bork
(WBS 1.2.2)
-------------------------------------------
PSL
=====
- R. Abbott at Livingston thru April 30 for continued install of PSL.
Suspension
=============================
- Completed the wiring diagrams for the 2K Mid-station suspension system.
Cross
connect and component lists have been generated so that rack fabrication
can
begin.
- Conducted tests on the rejected OSEM heads from
Hanford and have determined
that the loss of signal strength for the LED/PD
pair is probably due to a
degradation in the LED emission.
ASC
-=============================
- Determined that the current WFS PD design that is being used for
the IO WFS
has a phase shift associated with the gain switching circuit. This
phase shift
is inherent in the design of the circuit and will not cause problems
for
the WFS
PDs that operate at frequencies less than ~30MHz, but it will be a
problem for
the higher frequency devices. The current design will be used for the
IO
PDs and
the initial PDs used in the one arm locking scheme. A new circuit design
using
voltage controlled attenuators will be pursued and developed for the
other PDs
and eventually will be used for all WFS PDs. Initial tests of the voltage
controlled attenuator design are encouraging.
LSC CDS:
==========
Began working through the design of the Hanford 2K One-Arm Lock servo.
Timing System:
============
Modifications to the GPS Clock Driver circuit design are complete.
This
will enable the Clock Driver to drive an ICS-110A, 110B or 115A by
jumper
selection on the board. It should go out for fab by Monday. We are
stuffing
6 more GPS Clock Fanouts now.
EO Shutter Controller
======================
- Waiting on front panels to complete units.
Data Acquisition
==================
- Discussions with Sigg on GDS interfaces; will detail design of Network
Data
Server interface to test points over the next week.
- Continued design of 1KHz antialiasing filters for PEM signal inputs.
- Completed preliminary rack layout / cabling designs for mid/end stations.
| Period | Event | Action |
| Mid June until September 1999 | End User Oracle Training. | Users away from stations for extended periods of time ranging from a few hours to 10 to 20 hours per week for a few weeks depending on user's job responsibilities. Users cannot navigate through system or obtain information without training. Plan for staff training time. |
| Late June through July 5th | Existing legacy systems unavailable for processing transactions. | Plan to have all requests for changes, special payments or other business-related transactions completed prior to June 25th. No system generated checks during this "dark" period. |
| Mid June through July 5th | Final data conversion and transfer of Legacy (IFIS, HRIS, and SIS) information to ORACLE. | |
| Mid June 1999 | Kronos time keeping system goes live. | All bi-weekly payroll staff will begin entering hours worked (non-exempt) or leave taken (exempt) into new time keeping system. |
| End of May until June 28, 1999 | Transaction Processors in training. | Availability of Keith Spalding staff for processing requests significantly reduced. |
| April 1999 through June 11, 1999 | Retroactive labor distribution transaction cleanup, especially those that are moving charges for salary from an employee category to a fellowship or vica-versa. | Need to request processing of all transactions that would require payroll changes in the HRIS/IFIS legacy systems before ORACLE system comes live since cross-system corrections in this area difficult to do. |
| March through mid June 1999 | Close completed or inactive PO's and process internal charges. | Do not want to transfer inactive or outdated PO information as well as significantly overdue internal charges. |
| March through May 31, 1999 | Periodic data conversion runs from existing systems to ORACLE system to test data conversion programs. | PLEASE NOTE! Work to clean up negative balances, close out expired accounts, and correct inaccurate data so that new system has a reliable starting base. Incorrect data in IFIS will remain incorrect in ORACLE! |
| March through May 31, 1999 | Computer skill competency and remedial computer classes offered | Individuals intending to be efficient users of ORACLE applications require good computer skills. |
| March through May 31, 1999 | System Integration Testing (SIT) | Comprehensive testing of all ORACLE and third party systems using Caltech data. |
| CR-990001 | WBS 1.3 | Return Unused Budget for Construction Related R&D to Contingency | P. Lindquist |
| CR-990005 | WBS-1.1.4 | Livingston Site Fiber Optics Cable Installation | F. Asiri |
ACTIVITY HIGHLIGHTS
From: Sarita Moore<moore_s@ligo.caltech.edu>
Press here for ACCOUNTS PAYABLE HISTORY DATA.
From: Kris Duncan <kris@ligo.caltech.edu>
The monthly reports [for the end of March 1999 -pel] have all been distributed. I am doing the usual (and the not so usual) error correcting and troubleshooting.
psl (Biplab,Rick,Anthony,Hiro)
Had a telephone conference between CIT/LHO/LLO. Rick and Biplab
reported
the current status of the PSL subsystem modeling. Hiro modified
the
fld_modulator module based up the discussions in this meeting.
Also,
some modifications of the modeling strcuture were suggested,
and Biplab
is working on it. Next Meeting is scheduled on April 26, 9:00AM.
ioo (Sergei)
Sergei will come to CIT in the week of May 17, and a meeting
will be
held to discuss the future of the e2e model, including the migration
path of ioo.
lsc (Hiro, Peter F, Ed D)
Hiro visited MIT to discuss about the modeling of LSC/ASC using
e2e
with Peter Fritchel. Hiro explained the basic of the e2e to
Peter and
Ed. FP locking model developed by Matt was used as a starting
point
of the excercise. Peter will start working for the 2km locking
based
on this one. Hiro modified the e2e code to implement the local
dumping
of the mirror.
40m (Alab W, Biplab, Hiro)
Biplab and Hiro explained about e2e to Alan Weinstein. Alan
requested
some example programs from which he can start the development
of the
40m model.
alfi (Ed)
Fixed cropping problem in Alfi
Documented Restore feature of Alfi
e2e installation (Ed, Hiro)
Basic set of e2e - alfi, modeler and modeler_freq, and necessary
libraries - have been ported to MIT.
* (DF) Modified FrameCPP library to use block reads on Vect objects.
* (DF) Met with Kent, Phil & Mary to discuss blocking problems
in
the API's and how to fix
them.
* (DF) Modified the ObjectSpace package to compile using threads
under Linux (the package
already will use threads under
Solaris -- this was not
supported for Linux).
* (ML) Attempted to compile the generic API for ldas.
Lot of Difficulty with building
pkgIndex.tcl
for tcl "package require
..." so unable to get
generic cmds loaded. Need
to validate my paths
against Phil's.
* (ML) Test metadataAPI package; build tcl cmds to source in
DB2 create table scripts
to satisfy create table cmd in
metadata requirements. Need
to write tcl cmd parse to
parse DB2 scripts to pass
to metadata API.
* (ML) Joined team discussions on technical issues.
* (BS) Specification of User API to Manager API Interface and
User API Clients
Continuing the development
of the User-Manager Protocol (UMP) to be
used in communications between
the Manager API and its interface
to the LDAS user community
via User API client software.
* (BS) Specification of Requirements for User API Client Software
A specification of the requirements
for all User API clients is being
evolved. Writing a sample
client and a simple server to run tests
with.
* (BS) Re-port of the Hanford Electronic Log Software to LLO Hardware
A new machine to host the
LHO electronic log (ilog) has been set up.
The port has been done,
along with a few features to make the ilog
system more drag and drop
into the different installations as the
software is upgraded.
* (WM) I have developed a suite of tools to put together a stack
search
algorithm for isolated pulsars
in possibly discontinuous time
series. The foundation tools
used are FFTW for carrying out the
transforms and MPI for parallel
implementation of the algorithm.
* (WM) I am also studying the effects of window functions for
these long
time series, and how it
alters the shape of a candidate signal.
* (BK) Met with Rolf about the channel configuration web forms.
Have
put together a to-do list
for the next iteration of the forms.
Received the current channel
list to load into the database.
* (XH) finished loading binaryinspiral event data
* (XH) studied ilwd
* (XH) worked with ED to install DB2 client software
* (XH) talked with John on GDS trigger data loading
* (XH) is working on GDS ilwd
* (EM) Linked metadataAPI against iODBC library instead of DB2
* (EM) Got metadataAPI to execute on a user's local machine as
the local
user
* (PSE) Very nearly finished (90%) the manager and frame API's.
I will be releasing a "pre-alpha"
"system" consisting of
these two API's and an installation
script within a
few days. Expect bugs,
and e-mail me with bug reports!
* (PSE) Evaluated the thread capabilitites of Tcl8.1b3.
The Tcl8.1 interpreter is
"thread safe", but the
threading facilities are
in an early "alpha" state
at this time. A special
interpreter can be built
which can excercise a few
threading functions from
the Tcl8.1 C API.
It is possible to spawn threads
and communicate between
them using pipes or sockets
without blocking the main
thread.
* (PSE) Met several times with Mary to help her become familiar
with the LDAS Tcl environment.
* (JKB) The behavior of the "spawned" TCL interpretors was discovered
to have a blocking behavior
which prevents the ManagerAPI from
making new requests of any
of the LDAS APIs. Several solutions
were compared: Using TCL
8.1, Writing thread interpretors, and
customization of commands
that use large amount of time to complete.
It was finally decided after
several meetings and discussions that
the best solution would
be to use the Object Space Library for
Threads to create threaded
versions of time consuming commands.
A template wrapper will
be developed that lets any LDAS TCL
extension to be wrapped
as a Posix thread using the OS thread
classes and SWIG. We will
also develop thread management tools
as TCL extensions for handling
these thread-ed commands. This
approach is expected to
have the least impact on the design and
behavior of LDAS APIs and
will also be the fastest solution.
* (JKB) Met with representitives from IBM to discuss a possible IBM
SUR
proposal for IBM SP hardware
for this year. This meeting was a
joint meeting with CIT business
development, CACR and LIGO. The
outlook sounds positive.
IBM has made some significant improvements
in its SP hardware since
LIGO last visited this subject.
Majid:
I have developed a suite of tools to put together a stack search algorithm
for isolated pulsars in possibly discontinuous time series. The
foundation tools used are FFTW for carrying out the transforms and
MPI for
parallel implementation of the algorithm.
I am also studying the effects of window functions for these long time
series, and how it alters the shape of a candidate signal.
----- Forwarded message from Edward Maros -----
Compiled:
less v. 337
gdb v. 4.18
doc++ v.3.3.11
lesstif v. 0.88.1
----- End of forwarded message from Edward Maros -----
Stuart:
Measured memory bandwidth limitation on dual processor PCs within
the Beowulf cluster when doing FFT's (~7% performance hit).
Identified a potentially
serious problem within HPSS--several files
have seemingly disappeared. Will use this event to exercise the HPSS
logging and diagnostic tools to see if this was a user error or an
actual HPSS bug.
Prepared support material for the NSF review next week.
Continued to develop perl
script to automate free software package
installation.
Lazzarini: Met with Anderson, Kent and Wallace to straighten out several
last items
for LDAS procurement for Hanford. Identifed ethernet/atm switches needed
for the
LDAS private LAN. Wallace to write up POs.
MIT:
Nothing to report.
Livingston:
Preparing for NSF review. Setting up info. sheets for the visitors.
Hanford:
Spent some time testing user accounts on the modem pool router.
The
only user it will allow to login, so far is root. Trying to test
out
all the different configuration options to find the right one which
will
allow user logins.
CIT:
Barbara made several quick changes to LIGO and Amaldi sites.
Samantha reinstalled the CDR software, seems to have fixed the difficulties
with
the CDR. Crossing figures hopeing that it is a final solution.
Finshed repairing the machine that needed rebuilt, will have ED ship
it
off.'
Still attempting to figure out how to copy Gari's disks. May
have come up
with solution.
Trying to fix the Zip drives on the NT units, still.
Solved minor problems around project.
Updated ip list.
Ed configured merak for ligo use.
Working on the upgrades and installation of additional servers. Also,
testing
more of the features of Solaris 7. The OS load of Solaris 7 has increased
on
size by %30-%50, depending on items being loaded.
The group met together to discuss Y2K issues and documentation.
Working on instructions for setting up the modem pool with the existing
equipment.
Installed the Framemake 5.5 upgrade on to the server.
Working a number of networking issues for the Observatories as well
as trying to
get the LIGO network on to the CITNET2000 backbone.
Dorothy Lloyd
Received an extremely large stack of invoices (with dates ranging from January through April) to process for payment from Accounts Payable. Needless to say, I have given this my priority. Also, tracked and followed up on various invoice problems.
Processed the usual heavy load of POs, reqs, change orders, check requests, etc.
Continue to monitor and support temporary help.
Rita Torres
For I. Petrac formatted Procurement Justification for Hytec, change order No. 13; then distributed signed document. Did change order No. 6 to Galli & Morelli.
For M. Zydowicz/W. Tyler reformatted report on site procedures from Safety Committee; distributed same. Started updates to the LIGO Safety Plan which was originally issued in 1996.
For P. Lindquist distributed minutes of CCB held on 4/14/99. For T. Prince obtained information on the availability of ASIS members for a teleconference.
Requested pricing information from Skytel and Metrocall (AT&T) for pagers with email/voicemail capability. Metrocall is unresponsive. Will continue seeking more information.
Irene Baldon
Worked on preparing the paper work for various new trips taken recently (19 Purchase Requisitions and 13 Advance Requests). There are 5 additional new trips in various stages pending completion of travel arrangements.
Started receiving inquiries and requests for travel from LIGO/SURF participants. At the moment I'm working on 1 from Caltech to Hanford, WA, 1 from Caltech to Livingston, LA, 1 from Pisa, Italy to Caltech, 1 Missouri to Caltech, 1 from Shreveport, LA, to Caltech, 1 from Lyon-Satolas, France, to Caltech, 1 Leicester, England, and 1 from Belgrade, Yugoslavia to Caltech, for a total 8 at the moment. Additional students will be contacting as we go. The SURF schedule is from June 14th thru August 20th and many of LIGO's members are acting as Mentors.
Completed 19 Expense Reports, some of which were extensive, involving 2 to 4 pages each. Many of these reports were still not taped or completed by the Traveler, and required additional time for completion. Also worked on a number of problem issues which required a good portion of my time. Received yesterday and late Tuesday, but not yet completed my audit, 8 Expense Reports. These should be completed today, tomorrow at the latest, barring unexpected delays. I'm holding 1 expense report which requires additional information or is missing receipts from the traveler.
All 1998 travel folders have been cleared of any pending expense reports. I have sent them to DCC for permanent storage.
Prepared Travel/Vacation Itinerary for the Week of April 19th, 1999.
Performed miscellaneous duties as requested by various members of the LIGO Project here at Caltech, as well as from members of the staffs of each of the two (2) sites.
Elizabeth K. Wood
Updated Payroll with the names of the LIGO employees who are not working in California (for tax purposes).
Made yet another list for APE of LIGO employee work hours. No, they weren't kidding. Remember when I asked you last December what hours you regularly worked and between which hours you took lunch? This was the follow-up. Exactly the same as before. 'Nuff said.
Mailed out preliminary materials to the NSF Reviewers and NSF staff people.
Dealt with the usual personnel matters.
Continued talking with Delmy Emerson about the rat problem in the basement of Bridge Annex. Rat traps have been set by a professional rat trapper. This has been effective at trapping rats, however, the dead trapped rat removal has been sub-standard. I called Delmy and the Physical Plant Service Center to see if the traps can be checked much more frequently and to have the floors and ceiling tiles cleaned and/or vacuumed each day. She told me the custodians will be doing a much better job from now on.
Continued with preparations for the NSF Review in Livingston. I received copies of everyone's transparencies almost in a timely manner and delivered the book over to Graphic Arts for copying. I hope to have the binders stuffed this afternoon for FedExing to Louisiana by Friday. Many thanks to Larry Wallace, Donna Tomlinson, Sean Scanlon, Pat Huber of Kellogg Lab for the use of Kellogg's color printer, Cleveland Mak, and Dave Beckett.
Talked to Babra (yes, that's how she spells her name) Akmal of the personnel directory to fix some incorrect email addresses for some of our LIGOites.
Kip asked me to make arrangements for Nergis to give
a tour of the 40M for Roger Penrose before his seminar on Thursday. Nergis
said okay.
For additional information about this report, contact sanders@ligo.caltech.edu