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Development efforts to improve curved-channel microchannel platesCurved-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.
Document ID
19930050449
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Corbett, M. B.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Feller, W. B.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Laprade, B. N.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Cochran, R.
(Galileo Electro-Optics Corp. Sturbridge, MA, United States)
Bybee, R.
(Ball Aerospace Systems Group Boulder, CO, United States)
Danks, A.
(Hughes STX Corp.; NASA, Goddard Space Flight Center Greenbelt, MD, United States)
Joseph, C.
(Princeton Univ. NJ, United States)
Date Acquired
August 16, 2013
Publication Date
January 1, 1993
Publication Information
Publication: In: Ultraviolet technology IV; Proceedings of the Meeting, San Diego, CA, July 20, 21, 1992 (A93-34426 13-35)
Publisher: Society of Photo-Optical Instrumentation Engineers
Subject Category
Spacecraft Instrumentation
Accession Number
93A34446
Funding Number(s)
CONTRACT_GRANT: NAS5-29370
Distribution Limits
Public
Copyright
Other

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