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Proceedings Paper

Development efforts to improve curved-channel microchannel plates
Author(s): Michael B. Corbett; W. Bruce Feller; Bruce N. Laprade; Raymond C. Cochran; Richard L. Bybee; Anthony C. Danks; Charles L. Joseph
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Paper Abstract

Curved-channel microchannel plate (C-plate) improvements resulting from an ongoing NASA STIS microchannel plate (MCP) development program are described. Performance limitations of previous C-plates led to a development program in support of the STIS MAMA UV photon counter, a second generation instrument on the Hubble Space Telescope. C-plate gain, quantum detection efficiency, dark noise, and imaging distortion, which are influenced by channel curvature non-uniformities, have all been improved through use of a new centrifuge fabrication technique. This technique will be described, along with efforts to improve older, more conventional shearing methods. Process optimization methods used to attain targeted C-plate performance goals will be briefly characterized. Newly developed diagnostic measurement techniques to study image distortion, gain uniformity, input bias angle, channel curvature, and ion feedback, will be described. Performance characteristics and initial test results of the improved C-plates will be reported. Future work and applications will also be discussed.

Paper Details

Date Published: 22 January 1993
PDF: 12 pages
Proc. SPIE 1764, Ultraviolet Technology IV, (22 January 1993); doi: 10.1117/12.140852
Show Author Affiliations
Michael B. Corbett, Galileo Electro-Optics Corp. (United States)
W. Bruce Feller, Galileo Electro-Optics Corp. (United States)
Bruce N. Laprade, Galileo Electro-Optics Corp. (United States)
Raymond C. Cochran, Galileo Electro-Optics Corp. (United States)
Richard L. Bybee, Ball Aerospace Systems Group (United States)
Anthony C. Danks, Hughes STX/Goddard Space Flight Ctr. (United States)
Charles L. Joseph, Princeton Univ. (United States)

Published in SPIE Proceedings Vol. 1764:
Ultraviolet Technology IV
Robert E. Huffman, Editor(s)

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