PiP — a large solid angle scintillation telescope for detecting protons and pions

Abstract A ∼ 1 sr solid angle scintillation detector hodoscope for protons of up to ∼ 280 MeV and positive pions of up to ∼ 180 MeV energy has been developed for use in (γ,pN), ( γ ,p π ± and ( γ , π + N) experiments with tagged photons. This paper reports the detailed design of the hodoscope and its performance for detecting protons and positive pions.