Microchannel plate EUV detectors for the Extreme Ultraviolet Explorer

Astronomy and Astrophysics – Astronomy

Scientific paper

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Extreme Ultraviolet Radiation, Microchannel Plates, Radiation Detectors, Satellite-Borne Instruments, Spectral Resolution, Ultraviolet Telescopes, Bandpass Filters, Explorer Satellites, Photocathodes, Prototypes, Quantum Efficiency, Spaceborne Astronomy, Spatial Resolution, Ultraviolet Astronomy

Scientific paper

The design and operating characteristics of the prototype imaging microchannel plate (MCP) detector for the Extreme Ultraviolet Explorer (EUVE) Satellite are discussed. It is shown that this detector has achieved high position resolution performance (greater than 512 x 512 pixels) and has low (less than one percent) image distortion. In addition, the channel plate scheme used has tight pulse height distributions (less than 40 percent FWHM) for UV radiation and displays low (less than 0.2 cnt/sq cm-s) dark background counting rates. Work that has been done on EUV filters in relation to the envisaged filter and photocathode complement is also described.

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