Meeting time and location= 11:00 EST (JLab time) CC-f228

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Agenda

Attendees: Liping G., Sascha S., S.T.

Liping is working on the introduction and the physics update for the proposal. We will only be focussing on our responses to the PAC's questions.
Sascha presented his latest simulation results. We decreased the size of the insert from 1.2x1.2 m^2 to 1x1 m^2 but increased the beam energy range and therefore the flux by about a factor of 2 relative to the original proposal, so we anticipate a similar yield of π0γγ events. The signal/background ratio depends on how many photons are detected in the insert. The sweet spot seems to be when at least 3 of the 4 are in the insert. The efficiency is quite low (<2%) if we require all photons be in the insert.