JEF meeting, April 28, 2017

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

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  1. Hybrid calorimeter simulation update
    1. File:Eta status.pptx
  2. Proposal draft


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.