Miniature Imaging Photon Detector

A. H. Greenaway; A. Lyons; I. McWhirter; D. Rees; A. Cochrane

doi:10.1117/12.933477

16 November 1982 Miniature Imaging Photon Detector

A. H. Greenaway, A. Lyons, I. McWhirter, D. Rees, A. Cochrane

Proceedings Volume 0331, Instrumentation in Astronomy IV; (1982) https://doi.org/10.1117/12.933477
Event: 1982 Astronomy Conferences, 1982, Tucson, United States

Abstract

A compact, lightweight, photon-counting device with spatial capabilities will be described. Briefly, a photoelectron liberated at the photocathode is relayed, by a proximity focussed lens, to a triple microchannel plate intensifier, of which the first plate is filmed to protect the photocathode from damage by ion feedback. The resultant electron cascade is incident on one of a variety of possible position sensitive encoders. The position of arrival of the original photon is equated with the centroid of this charge cloud. Results obtained with present devices will be presented and major factors which limit the performance of such detectors, in terms of spatial resolution, count rate and lifetime, will be examined. This leads to the prediction of the ultimate limits achievable with practical devices of this nature.

Citation Download Citation

A. H. Greenaway, A. Lyons, I. McWhirter, D. Rees, and A. Cochrane "Miniature Imaging Photon Detector", Proc. SPIE 0331, Instrumentation in Astronomy IV, (16 November 1982); https://doi.org/10.1117/12.933477

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