Microchannel plate life testing for UV spectroscopy instruments

N. T. Darling; O. H. W. Siegmund; T. Curtis; J. McPhate; J. Tedesco; S. Courtade; G. Holsclaw; A. Hoskins; S. Al Dhafri

doi:10.1117/12.2277343

29 August 2017 Microchannel plate life testing for UV spectroscopy instruments

N. T. Darling, O. H. W. Siegmund, T. Curtis, J. McPhate, J. Tedesco, S. Courtade, G. Holsclaw, A. Hoskins, S. Al Dhafri

Proceedings Volume 10397, UV, X-Ray, and Gamma-Ray Space Instrumentation for Astronomy XX; 1039712 (2017) https://doi.org/10.1117/12.2277343
Event: SPIE Optical Engineering + Applications, 2017, San Diego, California, United States

Abstract

The Emirates Mars Mission (EMM) UV Spectrograph (EMUS) is a far ultraviolet (102 nm to 170 nm) imaging spectrograph for characterization of the Martian exosphere and thermosphere. Imaging is accomplished by a photon counting open-face microchannel plate (MCP) detector using a cross delay line (XDL) readout. An MCP gain stabilization (“scrub”) followed by lifetime spectral line burn-in simulation has been completed on a bare MCP detector at SSL. Gain and sensitivity stability of better than 7% has been demonstrated for total dose of 2.5 × 10¹² photons cm⁻² (2 C · cm⁻² ) at 5.5 kHz mm⁻² counting rates, validating the efficacy of an initial low gain full-field scrub.

Citation Download Citation

N. T. Darling, O. H. W. Siegmund, T. Curtis, J. McPhate, J. Tedesco, S. Courtade, G. Holsclaw, A. Hoskins, and S. Al Dhafri "Microchannel plate life testing for UV spectroscopy instruments", Proc. SPIE 10397, UV, X-Ray, and Gamma-Ray Space Instrumentation for Astronomy XX, 1039712 (29 August 2017); https://doi.org/10.1117/12.2277343

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