Development efforts to improve curved-channel microchannel plates

Michael B. Corbett; W. Bruce Feller; Bruce N. Laprade; Raymond C. Cochran; Richard L. Bybee; Anthony C. Danks; Charles L. Joseph

doi:10.1117/12.140852

22 January 1993 Development efforts to improve curved-channel microchannel plates

Michael B. Corbett, W. Bruce Feller, Bruce N. Laprade, Raymond C. Cochran, Richard L. Bybee, Anthony C. Danks, Charles L. Joseph

Author Affiliations +

Proceedings Volume 1764, Ultraviolet Technology IV; (1993) https://doi.org/10.1117/12.140852
Event: San Diego '92, 1992, San Diego, CA, United States

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.

Citation Download Citation

Michael B. Corbett, W. Bruce Feller, Bruce N. Laprade, Raymond C. Cochran, Richard L. Bybee, Anthony C. Danks, and Charles L. Joseph "Development efforts to improve curved-channel microchannel plates", Proc. SPIE 1764, Ultraviolet Technology IV, (22 January 1993); https://doi.org/10.1117/12.140852

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