Status of x-ray imaging and spectroscopy mission (XRISM)

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https://www.spiedigitallibrary.org/conference-proceedings-of-spie/11444/2565812/Status-of-x-ray-imaging-and-spectroscopy-mission-XRISM/10.1117/12.2565812.full

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https://doi.org/10.1117/12.2565812
 http://hdl.handle.net/11603/25414

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UMBC Center for Space Sciences and Technology (CSST) / Center for Research and Exploration in Space Sciences & Technology II (CRSST II)

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Author/Creator ORCID

https://orcid.org/0000-0002-4656-6881

Date

2020-12-13

Type of Work

conference papers and proceedings
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Citation of Original Publication

Tashiro, M., “Status of x-ray imaging and spectroscopy mission (XRISM)”, in Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series, 2020, vol. 11444. doi:10.1117/12.2565812.

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This work was written as part of one of the author's official duties as an Employee of the United States Government and is therefore a work of the United States Government. In accordance with 17 U.S.C. 105, no copyright protection is available for such works under U.S. Law.
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Abstract

The X-Ray Imaging and Spectroscopy Mission (XRISM) is the successor to the 2016 Hitomi mission that ended prematurely. Like Hitomi, the primary science goals are to examine astrophysical problems with precise highresolution X-ray spectroscopy. XRISM promises to discover new horizons in X-ray astronomy. XRISM carries a 6 x 6 pixelized X-ray micro-calorimeter on the focal plane of an X-ray mirror assembly and a co-aligned X-ray CCD camera that covers the same energy band over a large field of view. XRISM utilizes Hitomi heritage, but all designs were reviewed. The attitude and orbit control system were improved in hardware and software. The number of star sensors were increased from two to three to improve coverage and robustness in onboard attitude determination and to obtain a wider field of view sun sensor. The fault detection, isolation, and reconfiguration (FDIR) system was carefully examined and reconfigured. Together with a planned increase of ground support stations, the survivability of the spacecraft is significantly improved.