High temporal resolution coordinate-sensitive detector with gallium-arsenide photocathode

V. G. Debur, G. M. Beskin, S. V. Karpov, V. L. Plokhotnichenko, A. S. Terekhov, S. S. Kosolobov, G. E. Shaibler

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)


We present a coordinate-sensitive detector with a gallium-arsenide photocathode-a vacuum photoelectronic device featuring microchannel gain and a multi-element collector-which had several prototypes manufactured. Quantum efficiency of the photocathode amounts to 48% at maximum, its sensitivity range spans from 350 to 900 nm. The microchannel gain unit consists of two plates with an ion barrier film at the entrance. The coordinates of electron avalanches are determined using a 16-element collector. The spatial resolution, diameter of the working field, and temporal resolution of the detector are equal to 25 μm, 18 mm, and about 1 μs, respectively.

Original languageEnglish
Pages (from-to)386-391
Number of pages6
JournalAstrophysical Bulletin
Issue number4
Publication statusPublished - Oct 2009
Externally publishedYes


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