Present: Peter Bosted, Don Crabb, Keith Griffioen, Piotr
         Decowski, Bill Olson, Steve Rock

J decay: Keith looked at (1+cos**2(theta)) (follows from helicity 
conservation). Comes because photon is spin-1. Assumes good helicity states:
is this true? Assumed in codes and experimental analyses. Peter will ask
why not in PYTHIA. 

Keith talked to UCLA about hodoscopes (what tubes are appropriate).
Electron Tubes has 5 cm long, 3 cm tube, 1 ns rise times. $330/tube
(half of some other tubes, so this is good). Would be about $450 each
including base and H.V. Good news! UCLA will try to get some for testing. 

Resolution: Peter has been looked at spectrometer design with absorber,
then detector, then LASS magnet field. Can get good resolution, but
need spatial resolution of about 0.4 mm for J/psi, and about 1 mm
for Open Charm. This would need either wire chambers, or lots
of channels of scint. fiber. Conclude that better resolution is
expensive. Need to quantify the trade-offs. Peter suggests that
we re-visit option of K/pi decay for Open Charm.

Simulations: Piotr looked at Compton scattered beam (new beam pipe
design gets down to 10's/spill), hadronic punch-through (gives 
about 100 hits/plane/spill for 1.3 by 1.3 m plane), e+/e- pairs
procured in target hitting pipe (3E7/spill, get only 7 gammas/spill
in big plane for 1/100 of flux, so pretty quiet). 
Peter will make new hadronic file, with latest option for photon
beam energy profile.  Overall, B81 design seems like it will work
at high luminosity. U. Mass graduate student Xinyu
Wang will come to SLAC in June: would like to work on GEANT simulations
also. 

Target: Don got more info from Oxford on safety codes, etc. Seppo
is not at U.Va, so work is gearing up on the fridge. Bill Olson will
help John and Don with Design Review preparations. 

Equipment: Greg Mitchell sent info on good stuff at Fermilab, and
contacts. There are 800 lead glass blocks at FOCUS: could these
be very useful for the GDH experiment? Seems like they could, at
first glance.

Photon Beam: nothing new to report. Haven't heard back from Peter
Grabmary yet (his calcs. show some significant differences from Peter B.).
Lew Keller has been looking at muons from Collimator: rates high
if just use D1 as sweep magnet and D3 as spectrometer. Extra small
magnet in front of D1 can probably cure this problem.