Absolute and angular efficiencies of a microchannel-plate position-sensitive detector

R. S. Gao, P. S. Gibner, J. H. Newman, K. A. Smith, and R. F. Stebbings

Rev. Sci. Inst. 55, 1756 (1984)

This paper presents a characterization of a commercially available position-sensitive detector of energetic ions and neutrals. The detector consists of two microchannel plates followed by a resistive position-encoding anode. The work includes measurement of absolute efficiencies of H ⁺, He ⁺, and O ⁺ ions in the energy range between 250 and 5000 eV, measurement of relative detection efficiencies as a function of particle impact angle, and a simple method for accurate measurement of the time at which a particle strikes the detector.