High-resolution, two-dimensional imaging, microchannel-plate detector for use on a sounding rocket experiment

Brett C. Bush; Daniel M. Cotton; Oswald H. W. Siegmund; Supriya Chakrabarti; Walter M. Harris; John T. Clarke

doi:10.1117/12.48347

1 October 1991 High-resolution, two-dimensional imaging, microchannel-plate detector for use on a sounding rocket experiment

Brett C. Bush, Daniel M. Cotton, Oswald H. W. Siegmund, Supriya Chakrabarti, Walter M. Harris, John T. Clarke

Author Affiliations +

Proceedings Volume 1549, EUV, X-Ray, and Gamma-Ray Instrumentation for Astronomy II; (1991) https://doi.org/10.1117/12.48347
Event: San Diego, '91, 1991, San Diego, CA, United States

Abstract

We discuss a high resolution microchannel plate (MCP) imaging detector to be used in measurements of Doppler-shifted hydrogen Lyman-alpha line emission from Jupiter and the interplanetary medium. The detector is housed in a vacuum-tight stainless steel cylinder (to provide shielding from magnetic fields) with a MgF2 window. Operating at nominal voltage, the four plate configuration provides a gain of 1.2 x 10 exp 7 electrons per incident photon. The wedge-and-strip anode has two-dimensional imaging capabilities, with a resolution of 40 microns FWHM over a one centimeter diameter area. The detector has a high quantum efficiency while retaining a low background rate. A KBr photocathode is used to enhance the quantum efficiency of the bare MCPs to a value of 35 percent at Lyman-alpha.

Citation Download Citation

Brett C. Bush, Daniel M. Cotton, Oswald H. W. Siegmund, Supriya Chakrabarti, Walter M. Harris, and John T. Clarke "High-resolution, two-dimensional imaging, microchannel-plate detector for use on a sounding rocket experiment", Proc. SPIE 1549, EUV, X-Ray, and Gamma-Ray Instrumentation for Astronomy II, (1 October 1991); https://doi.org/10.1117/12.48347

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