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Proceedings Paper

Performance of a 40-mm unfilmed microchannel plate intensifier
Author(s): Peter David Read; Ian G. van Breda; Timothy J. Norton
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Paper Abstract

A prototype 40-mm-diameter proximity-focused microchannel-plate intensifier intended for photon-counting applications in both ground-based and space astronomy is described. The intensifier described is a sealed-window device and is also well suited to open-window ultraviolet applications in space astronomy. The tube makes use of a combination of an unfilmed curved-channel plate (C-plate), to prevent ion feedback, and a single straight-channel plate, aligned to prevent optical feedback. The tube has excellent cosmetic quality and shows a counting efficiency superior to that of filmed plate devices reported previously, giving an overall detective quantum efficiency at least equal to that of the best four-stage magnetically focussed intensifiers.

Paper Details

Date Published: 1 July 1990
PDF: 10 pages
Proc. SPIE 1235, Instrumentation in Astronomy VII, (1 July 1990); doi: 10.1117/12.19095
Show Author Affiliations
Peter David Read, Rutherford Appleton Lab. (United Kingdom)
Ian G. van Breda, Royal Greenwich Observatory (United Kingdom)
Timothy J. Norton, Imperial College of Science, Tech. and Medicine (United States)

Published in SPIE Proceedings Vol. 1235:
Instrumentation in Astronomy VII
David L. Crawford, Editor(s)

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