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Proceedings Paper

Development of off-plane gratings for WHIMex and IXO
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Paper Abstract

Future X-ray astronomical missions will need to address a number of important goals such as studying the dynamics of clusters of galaxies, determining how elements are created in the explosions of massive stars, and revealing most of the "normal" matter in the universe which is currently thought to be hidden in hot filaments of gas stretching between galaxies. In order to achieve these goals, spectrometers capable of high resolution and high throughput are necessary for the lowest X-ray energies, 0.3-1.0 keV. We present recent progress in the development of off-plane reflection grating technology for use on upcoming missions. Off-plane grating spectrometers consist of an array of gratings capable of reaching resolutions above 3000 (λ/Δλ). Concept designs have been made for the International X-ray Observatory X-ray Grating Spectrometer. More recently however, we have designed an Optics Module Assembly for WHIMex, an Explorer mission concept that incorporates a Wolter telescope, steering flats, and an array of gratings. This paper will discuss these designs and the application of off-plane arrays for the future.

Paper Details

Date Published: 12 October 2011
PDF: 11 pages
Proc. SPIE 8147, Optics for EUV, X-Ray, and Gamma-Ray Astronomy V, 81471K (12 October 2011); doi: 10.1117/12.895037
Show Author Affiliations
Randall L. McEntaffer, Univ. of Iowa (United States)
Webster Cash, Univ. of Colorado at Boulder (United States)
Chuck Lillie, Northrop Grumman Aerospace Systems (United States)
Suzanne Casement, Northrop Grumman Aerospace Systems (United States)
Will Zhang, NASA Goddard Space Flight Ctr. (United States)
Andrew Holland, Open Univ. (United Kingdom)
Neil Murray, Open Univ. (United Kingdom)
Stephen O'Dell, NASA Marshall Space Flight Ctr. (United States)
Mark Schattenburg, Massachusetts Institute of Technology (United States)
Ralf Heilmann, Massachusetts Institute of Technology (United States)
Hiroshi Tsunemi, Osaka Univ. (Japan)

Published in SPIE Proceedings Vol. 8147:
Optics for EUV, X-Ray, and Gamma-Ray Astronomy V
Stephen L. O'Dell; Giovanni Pareschi, Editor(s)

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