Attending: Peter Bosted, Keith Griffioen, Steve Rock, Bill Olson

E160 SSA. Peter is working with visiting Armenian scientist
Nikolay Ivanov on feasibility of measuring single spin asymmetry
in open charm using linearly polarized photons. Nikolay made
a presentation to those at SLAC.

E160 Hodoscopes. Keith is working on drawings. We decided not
to stagger middle counters in z: instead there will be a 1 cm
gap between left and right planes (as in front UCLA planes).
This simplifies construction.

E160 simulation. U. Mass graduate student Miao Wang made
progress in simulating inelastic J/psi production, and made
an improved simulation of J/psi from psi' decays. These peak
near z=0.8, and have cross section 2 to 5 times smaller than
inelastic model, roughly. 

Collaboration Meeting: possible date is Sun-Mon, Nov. 3-4. 
Peter needs to send out notice to collaboration to see if
most key people can make that date. 

Compton Polarimeter. Peter finished off Tigran's atomic
triplet calculations. Found always less than 1/Z of nuclear
pairs, even at large angles. But, theory breaks down there,
so Harald Anlauf checked using exact formulas. Found at most
2 to 5 times bigger cross section, so conclusions are
a) nuclear pari production from Fe target will dominate
b) atomic pair production gives essentialy equal e+ and e-
   rates, so can measure and correct for using the positrons.
Also, decided a bigger amgent would be useful (18D72 or longer).
Later in the day, decided should have septum (as in E155) so
can also measure electron polarization using Moller scattering.

Don forgot to call in, but sent following in a email nex day:
" One piece of information is that Ingo Sick is interested in the RPC 
program  and is willing to send a post-doc to be in residence (for how 
long?) at SLAC. Donal talked to him on Monday and suggested he send the 
guy to the next collaboration meeting. Ingo has an extremely good engineer 
who produced some excellent beam-line instrumentation for our Hall C 
experiments, so that would be a plus in setting up the photon line. So at 
least we should consider this at the next collaboration meeting.
 What do you think?" 
 Steve and Peter agreed this would be o.k.
 Should discuss again next week.