The Project Control Meeting
Agenda for Monday November 9, 1998 will be:
(Meeting time: 10:30 am Pacific Time)
General Items:
--------------
(Fred Raab)
Warning to visitors who like to drive from the
westside instead of
taking puddle jumpers: we are having our first
snow advisory. If you
want to drive to Hanford from west of the Cascades
use the Columbia
Gorge route from Portland from Thanksgiving to
Valentine's Day. Routes
through the mountains from Seattle may not be
passable during this
time of year.
Seismic Isolation Installation:
-------------------------------
(C. Gray, H. Radkins)
Initial installation for HAM9 was complete on Friday. For this chamber,
we inserted the Support Tubes via the 84" doors. This approach went
rather well, and will be carried out for other HAMs adjacent to BSCs
(namely, HAMs 10, 3, and 4).
Due to the influx of help last week, (NSF reviews
can be productive!-GHS)
many other tasks were completed:
rough positioning of Piers in outstations and fine positioning of the
adapter plates on HAM 1 & 2.
Larry Jones and Joe Giame arrived to offer assistance for HAM8
installation. Installation into HAM8 has begun. Doors were removed
Wednesday morning and everything was staged to install the Support
Tubes, Support Table, and Bellows (we are just waiting for the Support
Tubes to arrive). Once HAM8 installation is complete, diagonal area
can be pumped down for leak test of HAM 8 & 9 (probably next week).
Received more items for SEI installation. Another set of Scissors
Tables arrived (Dowel pins had to be re-set on lower plates).
BSC 1st Article: HYTEC Inc, Los Alamos
The Coarse Actuation Testing is proceeding well with beyond requirement
motion completed along with combined movements e.g. full transverse
then full pitch. There was no indication of problems but the range
of
motion supported our intention of positioning the Support Tubes very
carefully in the nozzle ports--on average, at worst location for
interference, there was less than 1/8" of clearance between the
Support Tube and the chamber/nozzle weld. Additionally, there appeared
to be motor trouble even when the motors got out of sinc (that
occurance is being worked on.) However, these so far have been
performed without the load of the Bellows. Faults in the control system
are being reworked at the manufacturer level; other areas in this
subsystem being address are coding.
The Fine Actuation System is disabled currently as the manufacturer
installs notch filters in the PZT controllers someone forgot to put
in.
They will also do some? calibration but I'm sure they can do that--it
requires a 300 lbs. preload. Those units should be back to HYTEC
early/mid next week 11/9.
The Coarse Actuation team has given the go ahead to Bellows
installation. One has been installed needing only a couple attempts
at
keeping the gasket in place--should be fun on top of the beamtube.
The
Bellows Guard was then installed without difficulty. No clamps
available so it was then removed but it should fill our needs.
The Leg Element Stacks have been reinstalled sans Springs; actuation
testing (Fine-X) wants to do some testing without first.
Once the Bellows are fully installed, Coarse Actuation will test again.
Followed by PZT system reinstallation and testing. And then Spring
installation and Dynamic tests.
Another four Scissors Tables are ready for pre load spring installation
and shipping.
Bake Oven:
----------
(K. Ryan)
LHO Bake Oven A load #3 consisting of 3 HAM bellows is complete
and should be available for release later today. A heater tape
and
turbo pump failed in the valved off RGA section of the system during
this bake. The total time for this bake was lengthened as a result
of
having to cool down and vent the valved off section, make repairs and
ramp it back up to temperature. The heat tape failure I attribute
to
my early use of hose clamps in holding tapes against flanges (I don't
do this anymore). I do not have any theories as to the pump failure.
Load #4 will consist of ~15 10 pound HAM table counterweights and
should get loaded on 11-06-98.
Optics & Lasers:
----------------
(D. Cook)
With a lot of added activity in the LVEA random particle counts have
been higher lately. I have mounted several more counters and will be
downloading the buffers daily, again, to get a better "baseline" count
before the 'Y1' module bake out begins. The insulation required for
the
bake tends to fill the air with particles.
We are in the process of ordering a dark field microscope for the
Optics Lab. We are finding that our bright field illumination does
not
have the required contrast or resolution needed to properly inspect
the
mirrors.
To accommodate exhaust fan repairs, ceiling tiles were removed from
the
change room. This affected the direction of positive air flow, which
has caused large increases dust levels in the optics lab. This is to
be
remedied shortly.
I have been researching equipment for the machine shop as the need to
be able to modify and build parts is ever increasing. LIGO personnel
and visiting staff are adhering to the site policies. The culture is
settling in. Thanks for everyone's cooperation.
Computing Systems:
------------------
(C. Patton)
This week has been quiet compared to last week. I am continuing
to
have conversations with Alpha Computers in Richland about getting
quotes for a service contract on our printers and about getting a demo
color laser printer.
Our site license for WinZip has arrived and our Frammaker, Eudora, and
Norton Utilities and Anti-virus have all been ordered and should be
here any day now.
Electronics/Electrical Systems:
-------------------------------
(R. McCarthy)
Cable tray installation is nearly completed in the LVEA. We had to
develop some work around for functionality but all has gone well so
far. Actually ended up modifying supports to allow for clean room
placement around Ham chambers. Also had to make some modifications
to
allow better access to the Laser enclosure.
Supported CDS installation of seismic electronics for the 2k IFO. Had
some minor material problems that were worked around and all the work
should continue as planned.
Multi mode fiber From the Mass Storage Room ATM into the LVEA has been
installed and the network is functioning. The fiber termination
contractor had some equipment problems that caused a delay in
installation but it did not hamper other installations.
The exit lights have all been modified with new circuit boards to
prevent future failures. This has been an ongoing problem at the site.
We installed the two systems correctly and per the manufacturers
information. However the manufacturers systems were not designed to
go
together. Another marketing vs engineering snafu.
Josh Myers joined
the team this past week and is already hard at work.
Beam-Tube Bake Out:
-------------------
(M. Lubinski, M. Guenther, and W. Althouse)
We have completed the functional test of both power supplies to be used
to bake out Y1. The data has been submitted to Bill Althouse for
evaluation. A turbo and Cryo pump have now been mounted on the ports
Y1-1 and 9. We will be starting these up in the next few days. The
last
three ports on Y2 have now been baked and with this we will be done
with Y2 shortly. We are now in the process of setting up the data
system on Y1. The move from Y2 to Y1 went very well with Sun River's
help.
Vacuum Equipment (Allen Sibley) PSI has pumped out and is currently baking the y arm manifold. Bake will be completed late this week. We are waiting for acceptance of the y2 module to start the back fill for GNB repairs to begin. Final acceptance review for LHO VE was held at LLO, and only a few small matters need to be cleared to complete the LHO acceptance.
Optics Cable tray installation in the vacuum prep and optics lab area is about to begin. Jonathan Kern developed a raceway design after reviewing the Hanford installation that he has given to local contractor who will shortly begin work. We have also received a bid from Culligan to replicate the de-ionized water system installed in Hanford.
Facilities Mechanical Maintenance Contract - We received three
proposals for the Mechanical Maintenance work at Livingston. The RFP called
for a fixed price proposal for the scheduled maintenance and requested
a time and material quote for unscheduled repairs
and emergency calls. A proposal review committee was convened to evaluate
the proposals and committee recommended that a contract be awarded to (name
deleted till selection memo issued - GHS) for one year with four
renewal options.
A formal report for the electrical QA has been received from Gulf Western Electric Inc. GWE inspected 10% of the electrical work. The report documents the discrepancies which have been found. Gerry Stapfer is now reviewing the report in detail to evaluate the severity of the many identified deficiencies.
The local fire marshal visited our facilities and found several items out of compliance (example: insufficient door clearance for wheel chair access to the multi-purpose room from the restroom area). Hensel Phelps is being notified to correct these items.
Preparation for Bakeout Cecil Franklin and Kerry Stiff worked with a local cleaning contractor to develope a method for cleaning the beam tube enclosures. We completed the electrical insulaton test of the beam tube supports. CBI repaired two bad insulators and tightened several loose bolts. We explored the requirements for grounding the beam tube at each port - this will involve installing several missing grounding rods and core drilling some holes in the beam tube enclosures that were missed earlier. We continue to receive bake out related equipment.
Detector Installation Preparation Anthony Rizzi is at Hanford this week working with Jay Heefner to start learning about the LSC system works and how it will be installed.
Site Administration and Infrastructure Bonnie Wascomb attended the new credit card software training on the Caltech campus. We will implement this system here as soon as the software is delivered to us. She also reviewed how to set up a satellite PO system while at Caltech - Dot will send a set of numbers to Livingston so that we can issue PO's from here.
Slade Maurer, a senior majoring in computer science, began work this week as a part time assistant helping to support the LLO network administration. Larry Wallace has given him a long list of work to do to help set up our servers.
Educational Outreach Dave Berley visited the Livingston site on Wednesday. We met with the President of SLU, Sally Clausen, to discuss opportunities to partner for educational outreach. SLU asked Berley for a written discussion of opportunities available from the NSF which might be useful in persuading local interests here in Louisiana that a commitment of SLU resources to this goal would be prudent.
----------------------------------------------------
DETECTOR GROUP -- Whitcomb/Shoemaker
(WBS 1.2, 1.3)
----------------------------------------------------
40 m Interferometer (Nergis Mavalvala)
---------------------------------------
Having settled question regarding mode matching and cavity losses
we are now trying to address the mystery of the >30% reflectivity
of the carrier when the full recycled interferometer is locked.
One clue that we're following up on is that the interferometer
locks more willingly when one or more mirrors of the arm cavities
are deliberately misaligned. Since misalignment effectively lowers
optical gain, front end saturation is one possible suspect.
Similarly, misalignment would lead to reduced coupling of carrier
power into the interferometer, and hence the excess reflected
light. Furthermore, a static model of the acquisition states of
the ifo (incorporating the most recently measured ifo parameters)
shows a large gain increase (x 35) in the Lp/df sensor when the
second arm comes into lock, while both the lp amd lm sensor gains
decrease (x 1/3). All of these effects, both observed and calculated,
are consistent with possible saturations and this is the subject of
our next investigations.
En route the investigations involving full interferometer locking
we are presently attempting to lock a non-recycled Michelson with
F-P arms. The motivation for this is two-fold: (i) we have seen
some strange length/pitch couplings when we drive the cavity end
mirrors using common-mode/differential-mode matrix module and the
simpler configuration is useful for trouble shooting this problem;
and (ii) if we can arrange the servo gains for robust locking
without recycling, we have models which will allow us to scale
these to the full recycled configuration, so this is an independent
way to approach the servo
gains issue above.
----------------------------------------------
Interferometer Sensing and Control -- M Zucker
(WBS 1.2.1.1.6, 1.2.1.1.7)
----------------------------------------------
Component fab/delivery status (MEZ)
-------------------------------------
item
status
----------------------------------------------------
IAS initial alignment tooling campus tests
complete, LHO delivery @ 11/9
WA2k&4k viewports delivered
WA2k IO optical lever (MMT3) delivered
WA2k COC optical lever optics in fab, delivery 12/20
WA2k COC optlev supports (MMT3 type) delivered
WA2k COC optlev supports (BSC type) out for quotes
WA2k COC optlev supports (TM type) in final design
WA2k video/illuminators delivered
WA2k IOT7 WFS table waiting
on 2 components, delivery ~ 11/15
WA2k ISCT7,9,10
in layout, delivery 2-4/99 (scheduled)
ASC Initial Alignment (K.Mason, M. McInnis)
----------------------------------------------
Several dry runs of the initial alignment procedures were done in the
optics labs to verify the sensitivity of the LDS 1000 laser
autocollimator.
- The laser autocollimator was mounted to the theodolite and
both
instrument line of sights set parallel by autocollimating each off
a
single 8" dia optical flat.
- The Brunson transit square was set up, the autocollimator was
tested
to 60 ft (1 1/2 times the maximum distance at the sites) and read.
Fluctuations of up to 10 microradians occurred due to air currents.
By
placing tubes between the instruments this was reduced to several
microradians.
- The PNI optic with similar coatings to core optics was placed
60 ft
from the autocollimator and we were able to autocollimate.
- The PNI optic was then positioned at 45 degrees and an
optical flat
at 90 degrees to the autocollimator. This is similar to the setup we
would use to align beam splitters and folding mirrors. We where able
to
autocollimate with the laser beam passing through the PNI optic
twice.
Our next tests will be in Hanford with LOS alignment fixtures at the
y-end station.
Ken M. is attending a class on field calibration of our alignment
instruments.
ISC Design (Mavalvala)
-----------------------
Updating IO mode cleaner wavefront sensing controls to include
electronic gains and basis transformation associated with
actuating the input beam via steering mirrors (rather than the
cavity mirror angles).
o Assembly of IOT7 (optical table for the mode cleaner detection):
---------------------------------------------------------------------
The optical mounts for this table have all been assembled, and
placed in nominal positions on the table. Since we are still
waiting on two optical components for the mode cleaner reflection
beam path, we started alignment on the mode cleaner transmission
beam path (used for the PSL intensity stabilization and beam
diagnostics). This is done with both HeNe and Nd:YAG beams,
set up to be colinear; the optics for this path are now aligned
and fixed in position. The remaining optics for the other path
should come in next week.
Lock acquisition (Ware)
------------------------
In order to resolve remaining questions about the differences between
SMAC and the theoretical model involving gain and sign changes, I ran
some rather long transfer function simulations of each of the states.
I had avoided doing this in the past because it took three Sparc
Ultra-30 cpu-weeks (not including various CPU crashes and Matlab and
network glitches), and because the previous modellers had developed
tools which supposedly were an accurate representation of SMAC, and
which in fact facilitated the design of a working acquisition system.
The resulting transfer functions show that for the most part, *using
the proper pick-offs*, the SMAC simulation matches the theoretical
model. For historical reasons, the evolved SMAC model had been
using the incorrect recycling cavity reflection off the input test
masses. Once this is corrected, the sign changes and gain changes
agree with derivations.
#MZ This is a great relief!
ISC Supervisory Controls code development (Daw)
-----------------------------------------------
This week I have fixed some problems with fantasy.mit.edu
in preparation for installing tornado. The board support
packages from Artesyn have arrived (thanks Jay). On the GDS
side I have continued to work on my Power Spectrum library
functions, modifying the structure containing a data set so
that the data can be complex, and the time stamp as returned
by the GPS modules is incorporated.
ISC Mech design (Matt Smith)
This week I spent time designing the enclosure for the interface between
the optical levers and the viewports. I completed the design
for WBSC4
and sent them out for quotes today.
Two of three quotes came back for the new wedges. One vendor no
bid
after seeing the drawings, the second vendors' average price was $3,000.
The third vendor(originally at ~$700 ea) will not be able to price
the
new design until next tuesday. I am expecting the third vendor
to come
in below the $700 price and will probably go with them. In the
meantime
I am sending out more request for quotes, just in case.
No new developments this week in the bridges to support the optical
levers for the ITMs.
-------------------------------------------
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
--------------------------------------------
- The 126 MOPA Laser #103 is being re-aligned at Caltech.
- The performance of 126 MOPA Laser #102, which is deployed on the 2k
IFO, is
being monitored. The mode-hop-free regions of the laser have
been mapped
out. The intra-MOPA EOM was removed as it was suspected that
there was
some optical feedback from the EOM into the master oscillator.
The low
frequency (approximately an hour) 0.5 W power swings are no longer
apparent.
At the moment the laser is being operated with a water chiller located
approximately 6 ft. from the laser. When the laser is fully checked
out,
the water chiller will be replaced for the one located in the interstitial
space and the laser performance will be monitored.
Input/Output Optics -- Dave Reitze, UF
-----------------------------------------
Task
Status
__________________________________________________
PSL IOO installation
- optics on table
11/10
- periscope on table
complete
- beam alignment
11/10
- beam characterization
11/30
Vacuum Prep
- suspensions
complete
- nonsuspended optics
11/20
- suspended small optics
11/30
- suspended MMT3
1/6
In Vacuum Optics Installation
12/20
------------------------------------------------
Installation -
Qi-Ze and Sany are at Hanford. Reworked the magnet to dumbbell
standoff
fixture with help from Doug Cook. With smaller holes, the alignment
of magnet and the standoff will be better. Started real gluing
procedure.
If nothing goes wrong, there should be two 3" mirrors (SM1,2) glued
and
balanced and re-cleaned by next Monday.
Mode Matching Measurement -
After detailed analysis, a procedure for alignment of the
optical beam with the dithering lens has been worked out and tested.
The
method is to iterate between minimizing fundamental lock-in signal
and
minimizing second harmonic signal using right mirror adjustments. The
test
shows that this method converges quickly and the sensitivity is beyond
the
precision of manual adjustment of the mirror mounts. This work will
be
resumed after Qi-Ze gets back from Hanford next week.
Meachanical Design -
This week Aaron has been working on preparing to submit all of the
IOO drawings to DCC. In addition, I have been working on the
Beam Tube
design and designing the in HAM positioning tools. He has also
spent a
fair amount of time on the phone with Reynolds, and ordering micrometers
for the SOS positioning tooling
MMT3 Radius of Curvature Measurement
No significant activity to report.
Core Optics Procurement and Metrology -- GariLynn Billingsley
-------------------------------------------------------------
Characterization of flat C continued this week with some surprisingly
good
data last Friday afternoon, unfortunately we don't know the cause for
the
change.
It was decided that, in the interest of schedule, we would forgo
measurements of coating uniformity at CSIRO on the last two beamsplitters
which are there for repolish.
Core Optics Coatings -- Helena Armandula
--------------------------------------------------
REO Contract - COC's coatings: Even if the last trip to REO was quite
challenging, the end result was a beam splitter acceptable for installation.
At Caltech, we inspected the beam splitter under a dark field microscope
for
point defects, and under a He-Ne diode laser for scatter. The surface
quality is comparable to other coated COC's.
Measurement of the coating (50/50) will be done shortly. Measurements
performed by REO show the coating to be within spec. Another positive
result
from the trip is the fact that REO made a commitment to install a point
of
use water filtration system that will greatly improve the cleaning
process.
These improvements will be implemented on the next coating runs, some
time
in early December.
Indium bonding: Several magnets have been coated with aluminum (on
one end)
to improve the adhesion of indium to the magnet. Bonding tests will
be done
next week.
Core Optics Support -- Michael Smith
------------------------------------
BEAM-DUMPS:
The shop is finishing fabrication of the redesigned cavity beam-dump.
Ara
has completed a preliminary layout for the SEI-mounted beam-dump for
GB
RMHR3 in HAM3, and a preliminary layout for the LOS-mounted beam dump
for
GB 2K BSHR3P.
ARM CAVITY BAFFLES:
Angel has completed the arm cavity baffle which is mounted in the manifold
at the end stations in the x and y arms, to eliminate the need for
a
cryopump baffle in the end station. He is working on the design of
the mid
station-right arm cavity baffle, which must be mounted in the BSC chamber.
Paul K. is in process of making detail shop drawings for the various
arm
cavity baffles.
ETM and PO Telescope-
CC Development has almost completed the working drawings for the ETM
and PO
telescopes. The finite element analyses of the
mechanical vibration modes of the structures is in process by an outside
vendor.
MOCK-UP
Progress is still on hold. Jonathan will resume work this week.
PO MIRROR
Ken M. has completed the design of the PO mirror. He is sending out
shop
drawings to build a prototype.
CONICAL BAFFLE
Craig has completed the design of the cryopump baffle for the vertex
station and is making detail shop drawings. He is also working on the
triple hinge bracket for mounting the beam dumps to the walls of the
BSC
chambers.
PROCUREMENT
Mike S. has released Rev A specs for the Faraday Isolator, PO telescope
mirrors, and Vacuum window. Dennis C. has approved the purchase requests,
and Irena is in the process of issuing purchase orders for those
assemblies, as well as the steering mirror mounts and periscope hardware.
Jonathan is coordinating with Irena and the vendors to obtain price
quotations. Jonathan has received several quotations for the ETM telescope
lenses.
COS FINAL DESIGN REVIEW
Mike S. has completed a rough draft of the COS final design document,
and
is in the process of updating the document and preparing supporting
documents.
--------------------------
Isolation Group -- M. Fine
--------------------------
Seismic Design (Mike Fine)
--------------------------------------
1. Air Bearings:
After consulting with Specialty Components, the four new air bearings
were
carefully cleaned and inspected for damage before being inserted into
the BSC
system at Hytec. There didn't appear to be any damage to the
new bearings
as a result of the metal shavings in the inner bag. Hytec will
institute a
more
robust cleaning operation for the air bearings on all future shipments
and
the bearings that have been shipped to LHO previously must be carefully
examined
and probably cleaned before placing on the LHO systems. Hytec will
work with S
pecialty Components to improve both the cleaning operations at Specialty
Components and the handling operations at LHO to ensure a safe operating
environment for the air bearings. The new air bearings have been placed
on
the
BSC system and were tested successfully for range. Slight stiction
was
observed
in one of the brearings; Hytec is currently investigating the problem.
2. Coarse Actuator Testing:
Performed full range yaw test, moving system +/- 4 milli-radians.
System
still exhibits bus faults on the NextStep amplifiers. IDC believes
there might
be a design problem in the sensing nets. They are going to modify
the drives
and ship them back to Hytec next week. Hytec has modified some
cable
connections
with the intent of minimizing noise and noticed a substantial reduction
in
the
faults (caused from low voltage) with the cabling modifications
to reduce
noise.
3. Near-Term SEI Hardware Delivery Schedule:
2 HAM optical tables and 2 sets of HAM legs
11/10/98
8 HAM Bellows (Livingston)
11/20/98
2 HAM sets of springs
11/16/98
4 Scissors tables (last of the 1st articles)
11/13/98
Suspension -- (Janeen Hazel/Mark Barton/Mike Fine)
-------------------------------------------------------------------
1. LOS Welded Structure:
Brookfield promises to send two structures out today by Emery Air.
They
will be
sent to CIT, baked next week, and shipped to Hanford on Saturday, Nov
14th
for
delivery on Monday morning, Nov 16th.
2. Alignment Fixtures:
Caltech transportation is picking up cleaned alignment fixtures from
Astro
Pak today
and will ship them to the sites. Many of the lead screws on the fixtures
will have
to be lubricated to avoid galling.
3. Assembly Fixtures:
Janeen stopped in at Schober's yesterday and the Teflon PAM brackets
are
markedly
cleaner this second time around. They should be delivered today. Schober's
broke two
taps in two suspension blocks so they have to be reworked. They will
be
delivered
tomorrow too. The clamps should be delivered on 11/13.
4. SUS Hardware Delivery:
SUS Structure Delivery Dates: [numbers in parentheses are quantities.]
LOS1(for ETM, ITM, MMT): 11/7(2). 11/19(1), 11/29(1), 12/06(1), 1/10(1),
1/17(2), 1/24(2), 1/31(2), 2/07(2), 2/14(2), 2/21(1)
LOS1(for RM): 11/19(1), 12/06(1), 12/13(1), 12/20(1)
LOS2(for BS): 1st artcle on 12/11, 12/13 (3)
LOS3(for FM): 12/13(3)
SUS Height Adapter Delivery Dates:
MMT3, RM: 11/14 (6)
BS, FM: 11/21 (5)
SUS Fixtures and Components Delivery Dates:
PAM Brackets: 11/5 *
Clamps: 11/13 *
BS Test Mass: 11/6 *
BS suspension blocks: 11/5 *
*changed
---------------------------------------------------------
Detector Systems Engineering -- D. Shoemaker/D Coyne
(WBS 1.2.1.1.9)
---------------------------------------------------------
Global Diagnostics System (Daniel Sigg)
--------------------------------------
No report this week.
Physics Environment Monitor (Alex Marin)
-------------------------------------------
1) Equipment orders, deliveries:
- PZT shakers arrived at MIT, will be shipped to
Hanford
- Masses for the PZT shakers were ordered
- Interface plates for BSC and HAM are on order
- 2 seismometers were delivered to Livingston
- 1 seismometer delivered to Hanford
- 108 WILCOXON accelerometers were ordered for WA
2) ENDEVCO deal: in the last few months, the PEM group has been
investigating some new WILCOXON accelerometers as an alternative to
the ENDEVCO initial proposed accelerometers. The conclusions are
positive: the sensitivity is almost a factor of 10 higher, while the
electrical noise and mechanical characteristics are about the same.
In addition, the price is much smaller. Taking in account those factors,
as well the fact that the LIGO experiment require about 160 accelerometers,
we decided to switch to WILCOXON accelerometers.
Also, we decided to buy ENDEVCO signal conditioners,
which have
about the same electrical characteristics as the WILCOXON ones, but
the
cost per channel is about 3 times lower.
We were able to convince ENDEVCO to return 40 ENDEVCO
accelerometers
previously ordered, and to buy in exchange the signal conditioners
and
the cables, without penalties.
3) Mark Coles presented a better weather monitor station, used by LSU
on a Louisiana meteorological network. We are considering this option,
at least for LA site.
4) Geophones were shipped to HYTEC for BSC tests. The PEM electromagnetic
shakers will be also used in those tests.
Optical Contamination (Daqun Li)
--------------------------------
Cavity two installed with a new set of mirrors has been relocked to
a
TEM00 mode. The initial ringdown and mode spacing data are good
with
no sign of contamination at present. The data taking for this
empty
cavity is expected to last at least two weeks to complete its
requalification process before reloading the air baked steel back for
re-testing. Cavity one still loaded with teflon wires is scheduled
to
go through a few cycles of vacuum venting and pumping to see whether
or
not the contamination problem encountered in cavity two can be repeated
here for cavity one.
After successful surface transmission mapping of a REO 1" flat mirror
(T=70 ppm) last week, this week I am trying to scan the scatter signal
of a REO 1" flat mirror (T=1500 ppm) with the Loss Scanner locked during
scanning.
-----------------------------------------
Control and Data System -- R. Bork
(WBS 1.2.2)
-------------------------------------------
Suspension
===============================
- Installation of all internal rack cabling and the field cables to
HAM
7 is complete.
- Operator screens and software for all 2K IOO suspension systems is
complete and ready for check out.
- Check out of 2K IOO suspension software, operator screens and rack
wiring will start 11/5 and should be complete by 11/6.
- 50 stuffed satellite amplifiers have been received from the vendor
and
are ready to be stuffed into chassis. This will begin on 11/9.
- Minor modifications to the DAQ daughter card artwork are being made.
Once complete, additional boards will be fabricated.
- Internal rack cabling for the 2K LVEA core optics suspension controls
is complete.
ASC/LSC software
==============================
- Development and testing of the ASC front end software continues.
Operator interface software and displays are complete for the test
point
interface and filter enables. These temporary screens will be used
to
complete the testing of the front end "real time" code. The front end
crate will be interfaced to a second crate the mocks up portions of
the
supervisory controls crate next week.
Timing
=========
- Two of the new GPS modules have been shipped and should arrive by Monday.
Data Acquisition
=================
- Still working reflected memory driver problems on Sun.
PSL
******************
1. Worked on revisions of PSL documentation and the submissions
thereof to
the DCC. This will be complete by 6 November '98.
2. Received PSL temperature boards for the tidal actuator and
reference
cavity control. Initial checkout looks fine.
Kris prepared a first draft end of September Monthly Status Report. Copies of salient portions of this report have been EMAILed to selected people for review and comment. So far the comments have been minimal, so we will prepare a final draft for review on Friday.
We are requesting materials for the end of FY 1998 Annual Work Plan to be submitted to us by Friday, December 11, 1998.
| CR-980041 | WBS 1.2.1 | Seismic Isolation System, Left Handed Spring Seats | S. Whitcomb |
| CR-980042 | WBS 1.1.2 | Beam Tube Module Testing and Equipment Purchase | L. Jones |
| CR-980043 | WBS 1.1.2 | Cancellation of Beam Tube Module Alignment Checks | L. Jones |
| CR-980044 | WBS 1.4.4 | General Computing Caltech | L. Wallace |
| CR-980045 | WBS 1.2.1 | Seismic Isolation System In-vacuum Components | S. Whitcomb |
| CR-980046 | WBS 1.2.1 | Seismic Isolation System Final Design Costs | S. Whitcomb |
| CR-980047 | WBS 1.2.1 | Seismic Isolation System Scissors Tables Second Source | S. Whitcomb |
| Action No. | Description | Responsibility | Assigned Date | Due Date |
| 1 | Prepare Operations Budgets for FY 1999 | Lindquist | August 6, 1998 | November 19, 1998 |
| 10 | Procedure to Cover Late Charges for Invoice Payments | Jasnow | August 27, 1998 | November 19, 1998 |
| 17 | Louisiana Road Access | M. Coles/G. Stapfer | October 8, 1998 | November 19, 1998 |
| 19 | Consider Lawsuit Against Panel Manufacturer at Livingston | R. Pool/E. Jasnow | October 15, 1998 | November 19, 1998 |
| 20 | Schedule Meeting on Shadow Accounting System for Operations | P. Lindquist | October 15, 1998 | November 12, 1998 |
| 21 | Letterhead and Business Cards for Sites | F. Raab/M. Coles | November 5, 1998 | November 12, 1998 |
| 22 | Chart of Operations Off-campus Accounts for Staff | P. Lindquist | November 5, 1998 | November 19, 1998 |
Received Confirmation from Briggs Equipment in Baton Rouge, LA that
the Forklift arrived. Necessary steps are being taken to identify and isolate
the [leaking] problem. [Initial indications are
that it is not the head gasket and not a cracked block. -pel]
Composed a letter to the General Services Administration (GSA) requesting two (2) four door sedans for the LIGO Hanford Observatory, GSA's approval was granted the Vehicles will be issued upon availability.
Assisted the Optical Engineer with the preparation of a Commercial Invoice for shipping a Beamsplitter SN:BS02-B, $96,122 to CSIRO in Australia (Att:C. Walsh).
Assisted the Optical Engineer with the packaging and shipping of Telescope Mirrors (Serial Numbers MMT12K01-1, MMT22K01-1 and SM07-1) valued at $5000 to the LIGO Hanford Observatory (Attn. Haisheng Rong) via Fed-X Acct # 5F514.
| C | Contractual/Procurement | 275 |
| D | Drawings and CAD | 54 |
| E | Engineering Documentation | 12 |
| G | Graphics/Presentations | 7 |
| L | Letters | 81 |
| M | Management/Policy | 5 |
| P | Publications/Formal Notes | 0 |
| T | Technical Notes, Informal | 8 |
I am still waiting on the reports for our Advanced R&D accounts.
Federal Accounting has been requested to open up several new off-site accounts.
Completed update of the October 1998 Schedule Value of Milestones for the Facilities and Vacuum Equipment contracts. Reviewing and analyzing October 1998 CSSR status received to date from task managers. All updates were due Wednesday, November 4. Please have updates in to Project Control ASAP.
Reviewed Change Requests 41-47 for inclusion into the November 1998 Performance Measurement Baseline. The CCB will convene next week to disposition the CR's.
Finished Archiving schedule data for the Facilities and the Detector
schedule in Open Plan Pro. Hard copies are now filed and electronic
backups
have been created and stored.
>From: Florence Kaufman <fkaufman@ligo.caltech.edu>
The source evaluation committee met to select a contractor for the mechanical maintenance effort at Livingston. After review and evaluation of three proposals, a contractor was selected. It is expected that the source selection memo will be signed early next week.
Resolution of the schedule conflict between CBI and PSI on the Y arm at Livingston continues to be worked. LIGO has asked PSI to have GNB start repairs on the X arm until CBI has finished its acceptance test, and the arm can be vented.
LIGO QA participated in proposal evaluations for the Livingston site maintenance support contract.
LIGO QA issued an Action Item status report for the Hanford Safety and Operational Review which had been reviewed and discussed at a recent Site Weekly Meeting.
LIGO QA supported the last part of the PSI Vacuum Equipment Washington Site Right Arm and Corner Station Acceptance Meeting by telecon. LIGO QA (R. Vincent) will review/audit the GNB modification records per VO49-1-185 as part of LIGO's "buy off". Also W. Tyler is working with L.Turner to review the other PSI documents submitted as part of this Acceptance Review.
LIGO QA also supported by telecon, the PSI Vacuum Equipment Monthly
Status Meeting.
Lazzarini and Weiss discussed having a pristine
site EM survey performed at Livingston by the EMI
consultant who did the work for us at Hanford last
Fall. Coles has been advised for an appropriate
window for the ~2 day visit.
Weiss, Stapfer, Stiff, Matherney and Lazzarini
will be meeting to review what needs to be done to
proceed with a plan to ground the BT at both sites
whenever the bakeout activities do not require it
to float.
__Integration Support:
SEISMIC TABLE BALANCE WEIGHTS
Weights were ordered
and first sample
(10#, uncleaned) was at
Caltech for evaluation Wednesday, 11-4-98. First
1000# should be ready
for shipment to our vendor in Alameda for cleaning
by Monday, 11/16/98.
Balance to be delivered at the rate
of 2000# every two weeks till 10,000# is in house.
2/3 will be shipped
to Hanford, 1/3 to Livingston.
ELEVATED PLATFORMS
Four units scheduled for delivery to the the
Hanford Site by
11/6/98.
X-BEAM & Y-BEAM SPOOL BAFFLES
Work on detail drawings is continuing
__Reliability: nothing significant to report
__Integrated Layout/Drawings:
OPTOMECHANICAL INTEGRATED LAYOUTS
The plan & elevation views of the LVEA in
Hanford have been updated
to
include the latest drawings of the ITM
Telescopes, BSC Beam Dumps,
and the arm
baffles, as well as incorporating the Mid
&
End (VEA) Stations.
Also new IOO
input was received from UFL and ISC input
was
received from MIT,
which was
incorporated into the plan drawing.
__Mock-ups: Nothing to report
1.4.3.3 Modeling & Data Analysis (KB/HY/AL/SA)
Hiro: [Hiro is in Japan for the next two weeks]
e2e: Multi mode field (BB, HY)
Most of the basic tools for the multi mode staff
are implemened.
Prepared demo for the NSF review ( chainging of
the beam profile as the
mirror is tilted and displaced ).
Some of the model validation of the time domain
modal model were done.
e2e: Mechanis (GC, BB, HY)
G. Cella explained his modeling work of the
mechanics part of the end to
end model to RW and DHS. He also talked with Mark
Barton so that they can
exchange information about the stack measurement
data.
Alfi: (EM)
Started work on Sub views.
Distribution of e2e packkage (EM)
The single mode version of the e2e package has
been installed in the UFL
machine. This will be used to validate that all
settings are working well,
and then, multi mode codes will be installed so
that UFL can start working
modeing the IOO.
Admin: (EM)
Worked with Stuart to get ntpd going on all the
machines for consistent time.
Learned from Stuart about Disk Suite to better
utilize the drive space.
Other: (EM)
Participated in DBMS workshop.
Installed the e2e system on ligo.phys.ufl.edu
Kent Blackburn:
- Updated several sections of the genericAPI
specification to include
a units attribute and some edits from Phil.
- Upgraded all the Redhat 5.1 RPM packages on the
LDAS alpha Linux box,
this included a complete rebuild of the kernal
on that machine which
had never been done. I also installed a second
ethernet card (10/100)
in the event that it became the gateway to the
martian network which
will be the LAN to our Beowulf.
- Shipping and Receiving called to report that our
Beowulf system has
arrived from Alta Technology, Inc. It hasn't
shown up in Millikan
though.
- Met with Ed Maros to rework the LDAS software
server. Several structural
elements of the previous layout were not easily
mirrored, something that
will be needed to support the sites.
- Met with Larry, Ed, Stuart, and Albert to
discuss a better LAN topology
for the arriving Beowulf system. This will allow
us to better mimic the
systems planned for the sites and hence perform
higher reliability tests.
Phil Ehrens:
- Began the final shot at documentation on the
genericAPI.tcl library. I noticed some
shortfall
in the command set relating to the management of
distributed logging information, and thought it
necessary to re-evaluate the logging
implementation.
I made several improvements which surprisingly
did
not break anything.
- Returned to the final pass at the documentation.
Rationalized documentation somewhat between
procedures.
- Improved consistency within the error messaging
system and integrated it with the logging system
functions.
- Discussed with Kent the need for developing some
form of test system compatible with the LDAS
software model.
Dave Farnham:
- Worked with Kent and Phil on the specification
for the generic API.
- Finished implementing the c++ portion of the
generic API
specification.
- Worked with Phil on developing a simple demo to
demonstrate the
features of the generic API.
- Restructured the heirarchy of the C++
classes/libraries to coincide
with the plan for the CVS repository and updated
Makefiles.
- The C++ portion of the generic API is basically
finished. However, I am
still writing test cases to ensure that the code
operates as expected.
I have also been writing documentation to
explain the overall
methodology used (such as for exception
handling).
Lazzarini:
A workshop and the NSF review conspired to prevent
me from reporting for the past two weeks. This is
an update.
We held an informal database workshop with four
invited experts. We reviewed LIGO needs (as
presently perceived) with them and had them
present their respective database projects to us.
It seems that a relational database approach is
adequate for LIGO's needs. Viewgraphs from the
workshop may be obtained in .pdf form from the
data group BB:
http://www.docuserv.caltech.edu/~prince/LDSG.html
-- see bottom of our web page under Recent
Presentations. [Note: it is a 5.7MB .pdf file]
We have made an offer to a software programmer who
also has Oracle/Informix/Sybase programming
experience.
Kent and I are considering an
information-gathering trip to LBNL to talk to the
system architect for the STAR experiment at RHIC.
Torre was recommended to us by several of the NSF
panel members last week.
The contract and invoice for ESnet services at
Hanford came during my visit to Hanford for the
NSF review. I passed it on to Jasnow for review
and signatures. He informed me that it had been
processed as of Wednesday.
We are still looking for additional programming
staff to carry on the implementation of LDAS.
While at Hanford, Kent and Lazzarini met
extensively with Rolf, Daniel, and Zweizig to
discuss the GDS-LDAS interface. We arrived at a
consensus that we believe can be met and which
supports GDS needs by middle-late Spring of next
year. We will develop the data distribution
software interfaces (to framed data on disk cache)
as the first components of LDAS.
During our trip to Hanford the 8 node beowulf
cluster arrived (although it is still somewhere on
campus as of this writing -- see Kent's report
above). In a follow-on discussion among the LDAS
group, we have come up with a prototypical
hardware configuration which will support the plan
to set up the the data distribution server first
at Hanford. This involves configuring several
linux and Unix workstations, along with the
Beowulf cluster as a subset of the on-line block
diagram shown previously by the LDAS group. The
prototype wil be set up in Millikan in the next
few weeks to start addressing the interfaces
discussed in the previous paragraph.
During Bruce Allen's brief visit, Lazzarini met
with him to discuss tasks that he might support
during his visit to LIGO next late winter and
spring.
1.4.4.2 General Computing (LW/TE/SS/BK)
[3 weeks' worth appears sequentially below]
MIT:
1. Reviewing financial status and preparing to
upgrade some of the older
computers.
2. Tom is also getting things ready for his move
to the Livingston Observatory.
Hanford:
1. Continued follow-up on service contract for
printers and on getting
a demo color laser printer to try out before
deciding if we want to buy
one.
2. Worked on a login problem on the Unix system.
It appears to be
caused by having a newer version of CDE on the new
Ultra 60 computers
and older versions on the rest of the computers.
Anyone logging in on
the new Ultra 60s then has problems logging in on
any other workstation
as well as with Exceed.
3. Contacted Cullen tollbom at PNNL who has
offered to help reset the router to
accommodate the new IP addresses. Currently,
waiting on the DNS tables being
setup by Caltech.
Livingston:
1. The new student worker (Slade) is documenting
the new PC's and generating a
list of S/W that will need to be
purchased/installed on the new units.
CIT:
1. Monthly full backup of servers (sirius, ligo,
gsparc and kater) have been
accomplished.
2. Working on new server. The following pkgs. have
been installed:
GNU gcc, tcl/tk, sudo, nedit, emacs, tcsh etc.
Updated netscape on the present server called
sirius and installed the TCL
plugin.
3. Working on getting data moved and stored for
Garilynn.
4. Samantha is working on the GC documentation and
has added the Livingston
addresses to the main IP table. Also, finished
setting up another laptop for
travel. This gives us two fairly nice units and
two very lowend (e-mail and
netscape only) units for travel.
5. Reworked the sendmail config files for clients,
relay host and the mail
server. There are still a number of issues that
need to be worked out. Mostly,
the domain and host name handling is still causing
some problems. It is not as
forgiving as it should be.
6. Multiple licenses have been reset and
reinstalled because of various
problems. Mainly, matlab and mathematica were the
two that had problems. Working
on consolidating the Sunworkshop Licenses to one
server.
7. Installed CADENCE and writing up the procedure
used for the installation. The
manuals are not quite accurate on the installation
procedure that should be
used. Also, have been informed that not all of the
licenses were received and
that will be an issue to be worked out.
8. Some minor modifications to WEB access has been
performed. We are
investigating how personal web pages can be setup
to better accommodate the LIGO
users in the current configuration.
9. Barbara is checking out some issues on getting
the Apache Web pkg. to work
under Windows NT. This it to go along with the
possibility of getting E-log to
run on a standalone NT machine.
10. Barbara has been working on the WEB counter
and filtering of the
information. From preliminary testing it was found
a few routines need to be
added to the WEB server to accommodate some errors
that people have been getting
since the change to the new pages.
11. The usual changing of user accounts and moving
machines around is still
going on.
22 Octboer weekly:
MIT:
1. Going over budget and preparing to upgrade some
of the computers.
2. Tom E. reviewed some of the MIT computer setups
with Larry W. in order to
give Larry a better understanding of how things
are mapped out.
Livingston:
1. Re-tested the internal CAT 5 cables and found a
number of them to have
problems. Some have broken wires and need to be
replaced. A list of the cables
having problems has been sent to Gerri S. and Bob
B. of Parsons.
Documenting the FORE units and CAT5 lines need to
be done in more detail and
hopefully will be done on Larry's next trip to
Livingston.
2. Met with the consultants from Techmaster who
are planning on installing the
modem pool this week. The plan is to continue
using them for support until a
full time Sys. Admin. is hired.
3. Rebuilt the Ultra 10 WWW/e-mail server from
scratch and we are currently
running tests on the unit.
Barbara K. was able to get the LIGO Livingston web
pages moved to the unit and
get them working correctly. There will be some
testing and debugging for the
next few weeks after which the Livingston pointer
at Caltech will go to the
Livingston Web server.
Tom E. has been adding users to the server and
working on debugging the e-mail
system. So far it has been working quite well with
few modifications. The DNS
tables at Caltech need to be changed to show the
unit as the e-mail server for
"ligo-la.caltech.edu".
4. Worked multiple PC issues one of which
Techmaster is working in more detail.
It appears there is a conflict with a program and
Windows98 which causes the
network on the unit to crash. The exact cause of
the problem is being worked on
by Techmaster.
5. Multiple hardware and software purchases for
the GC environment at Livingston
are in progress.
Hanford:
1. Resolved a problem getting the tape backup to
work on the site's
administration PC.
2. Investigated costs and options for buying a
new color printer. Made
arrangements to get a demo model of a color
laser. Also, have requested
a quote from a local company for a yearly service
contract on all our
printers.
3. Cleaned our Deskjet color printer in an effort
to get it to work
properly. The next option is to send it back to
HP for servicing.
4. Added several new user accounts. Followed up
on several orders for
software. Set up a new PC for the facility
environment control system.
CIT:
1. Monthly full back up of sirius, ligo, kater and
gsparc has been accomplished.
2. The following three new user accounts have been
set up:
Florence Kaufman (fkaufman)
Contantin Brif (cbrif)
Gabor Siklos (gsiklos)
3. A new e-mail alias for University of Florida
(uf-all) has been set up
including members affiliated with LIGO.
4. Multiple PC installations and moves have taken
place. Two of the P5-90's are
being prepared for shipment to Hanford.
5. Rebuilt a number of the print driver setups.
Finished getting the print
setups done for the new printer in Millikan.
6. Multiple PC issues worked on. Most of the
problems were minor and related to
the new setups.
7. Multiple purchases in process for computer
upgrades and software upgrades.
8. Reworked some of the e-mail services. Removed
the Caltech mail relay server
out of the path and some other minor modifications
to the LIGO server
configuration file which should help speed things
up for mail delivery.
____________________________________________________________________________
Oct. 29, Weekly
MIT:
1. Preparing for SUN computer upgrades.
Hanford:
1. Ordered Framemaker 5.5 for Unix. Ordered
WinZip and Secure Shell
site licenses for our PCs.
2. Called again for quotes on a yearly service
contract for our
printers. Called again to try and get a demo
model for a color laser
printer.
3. Set-up new user accounts and provided
temporary IP addresses for
people to use during the NSF Review.
4. Set-up a new general purpose PC in the
Computer User's Room.
Livingston:
Nothing to Report
CIT:
1. Barbara K. wrote Access queries and a report to
produce the Electronic
Document Index as an HTML page.
2. Barbara K. wrote a Visual Basic procedure to
copy the .pdf file names in
dcc/docs and append them to the appropriate entry
in Web_Docs (or Docs) table in
the DCC database. So someone in the DCC doesn't
have to do any data entry to
link a database entry to the electronic version of
a document.
3. Barbara K. began a VB program to create the
CURRENT directory of electronic
documents. This directory feeds the full-text
document index utility that
is part of Acrobat Catalog which the 4th way we
have to search for
electronic documents.
4. Barbara K. has started planning to put the
as-built drawings on the web.
5. Barbara K. tried to find a way to put Mark
Coles' poster boards on the web
site.
6. Barbara K. imported some web site log entries
into Excel/Access and began
write a procedure to produce statistics.
7. Barbara K. added a notice for the PAC5 meeting
to the web site.
8. Barbara K. attended the LDAS database workshop.
9. Barbara helped with some problems with the
traveler forms in the DCC. The
document numbers are reserved with one group
suffix and the documents are
being submitted with a different group suffix.
10. Samantha B. is inputting the IP addresses for
Livingston into the GC
documentation.
11. Samantha is preparing another laptop to be
used for travel as well as working
different PC problems.
12. The group as a whole has been working PC
issues. It has been decided to use
Norton Utilities on the Windows 98 machines in
place of FirstAid. Norton
Utilities appears to solve more of the problems on
the machines we are using.
13. Suresh has setup a number of new accounts.
14. Working on getting the new server on-line.
Currently, loading applications
and getting the new licenses ordered/transferred
from the old server.
15. Multiple computer moves both SUN and PC
equipment. Presently, we have a
number of Sparc 2's and Sparc 1+'s to be upgraded.
We plan on using them as
trade-ins as needed. The SUN IPC's are being used
for purhases already in
process.
16. Presently, installing the latest version of
Cadence under a Solaris 2.5.1 on
a Sparc 10. The pkg. has not been completely
converted over to Solaris 2.6 and no
time frame was given on when they would have that
completed.
17. While working on networking issues at
Lauritsen Larry W. was informed that
the upgrade for network connectivity at Bridge has
been delayed and no time table
of when it will take place is known at this time.
We are putting in a request to
check on connecting the LIGO network to the
Caltech backbone through Millikan
until things are resolved at Bridge.
Dorothy Lloyd
Continued processing heavy load of purchase requisitions, POs, change orders, check requests, etc. as well as extremely heavy load of invoices.
Followed up and tracked problems with invoice payments.
Entered AP30 reports into the database.
Reconciled June-September CA47 Work Order reports and about two-thirds of May status report.
Continued to monitor and support the temporary help.
Rita Torres
For I. Petrac did edits to General Optics change order No. 1, Superior Jig change order No. 2 and accompanying Procurement Justification, also did letter to vendor to transmit an advance copy; also letter to NSF regarding approval of same. Did Hand Precision change order No. 1 and accompanying Procurement Justification, also did letter to NSF regarding approval of same. Did Galli & Morelli change order No. 3. Helped close out a couple of contracts.
With S. Meshkov spent a few hours on NSF's FastLane to input proposal information for the Amaldi Conference schedule for July 1999. [Liz, thanks again for your help. Remember the spaces we left blank? Gaylene of Sponsored Research directed me on which ones to fill.]
For W. Tyler reformatted technical documents on GNB Gate Valve O-Rings and Gate Valve Acoustic & Vibration Test. Formatted memo: Technical Review Board Report for Large Gate Valve Sticking O-Rings and Bakeout.
For P. Lindquist did edits on forms to program for Operations and Commissioning of Laser, etc. Distributed material for CCB scheduled for 11/10/98.
Distributed: PO PC282928 with Hand Precision Machining, Inc., change order No. 4 to General Optics, change order No. 3 to Galli & Morelli, change order No. 28 to MIT and new MIT PX045667.
Elizabeth K. Wood
Finally (I hope) got the paperwork going for Florence Kaufman to have access to the IFIS system.
In Irene’s absence, I did both hourly and salary payroll early because the banks will be closed for Veterans’ Day (Wednesday).
Did three travel reimbursements, subject to Irene’s review. Took care of some travel-related paperwork, ticket delivering, and travel advance processing.
Doublechecked travel arrangements for Koji Arai who will be visiting us from November 9 to December 25. Graduate housing can no longer accommodate shortterm graduate student visitors. This may change in the coming months, but currently it is not an option.
Helped Rita with some aspects of FastLane. I highly recommend the use of FastLane for proposal preparing, especially for budgets.
Many thanks for Jill Berry, Dave Beckett, and Cleveland Mak for helping out with the NSF Site Review. Also to Donna Tomlinson for her years of insight into the process.
Handled the usual personnel issues.
Irene Baldon
Not here due to the arrival in Las Vegas of granddaughter
Gianna Marie, 7 lb. 5 oz., 20.5 inches, 9:52 p.m. November 2.
For additional information about this report, contact sanders@ligo.caltech.edu