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Ground Calibration of the Astro-H (Hitomi) Soft X-Ray SpectrometerThe Astro-H (Hitomi) Soft X-ray Spectrometer (SXS) was a pioneering imaging x-ray spectrometer with 5 eV energy resolution at 6 keV. The instrument used a microcalorimeter array at the focus of a high-throughput soft x-ray telescope to enable high-resolution non-dispersive spectroscopy in the soft x-ray waveband (0.3-12 keV). We present the suite of ground calibration measurements acquired from 2012-2015, including characterization of the detector system, anti-coincidence detector, optical blocking filters, and filter-wheel filters. The calibration of the 36-pixel silicon thermistor microcalorimeter array includes parameterizations of the energy gain scale and line spread function for each event grade over a range of instrument operating conditions, as well as quantum efficiency measurements. The x-ray transmission of the set of five Al/polyimide thin-film optical blocking filters mounted inside the SXS dewar has been modeled based on measurements at synchrotron beamlines, including with high spectral resolution at the C, N, O, and Al K-edges. In addition, we present the x-ray transmission of the dewar gate valve and of the filters mounted on the SXS filter wheel (external to the dewar), including beryllium, polyimide, and neutral density filters.
Document ID
20170005842
Acquisition Source
Goddard Space Flight Center
Document Type
Conference Paper
External Source(s)
Authors
Eckart, M. E.
(NASA Goddard Space Flight Center Greenbelt, MD United States)
Adams, J. S.
(Maryland Univ. Baltimore County Baltimore, MD, United States)
Boyce, K. R.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Brown, G. V.
(Lawrence Livermore National Lab. Livermore, CA, United States)
Chiao, Meng P.
(Maryland Univ. Baltimore County Baltimore, MD, United States)
Fujimoto, R. J.
(Kanazawa Univ. Japan)
Haas, D.
(Space Research Organization Netherlands Utrecht, Netherlands)
Den Herder, J. W.
(Space Research Organization Netherlands Utrecht, Netherlands)
Ishisaki, Y.
(Tokyo Metropolitan Univ. Hachiouji, Japan)
Kelley, R. L.
(NASA Goddard Space Flight Center Greenbelt, MD United States)
Kilbourne, C. A.
(NASA Goddard Space Flight Center Greenbelt, MD United States)
Leutenegger, M. A.
(Maryland Univ. Baltimore County Baltimore, MD, United States)
McCammon, D.
(Wisconsin-Madison Univ. Madison, WI, United States)
Mitsuda, K.
(Tokyo Univ. Sagamihara, Japan)
Porter, F. S.
(NASA Goddard Space Flight Center Greenbelt, MD United States)
Sato, K.
(Tokyo Univ. of Science Tokyo, Japan)
Sawada, M.
(Aoyamagakuin Univ. Kanagawa, Japan)
Seta, H.
(Tokyo Metropolitan Univ. Hachiouji, Japan)
Sneiderman, G. A.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Szymkowiak, A. E.
(Yale Univ. New Haven, CT, United States)
Takei, Y.
(Tokyo Univ. Sagamihara, Japan)
Tashiro, M.
(Saitama Univ. Saitama, Japan)
Tsujimoto, M.
(Tokyo Univ. Sagamihara, Japan)
De Vries, C. P.
(Space Research Organization Netherlands Utrecht, Netherlands)
Watanabe, T.
(Maryland Univ. College Park, MD, United States)
Yamada, S.
(Tokyo Metropolitan Univ. Hachiouji, Japan)
Yamasaki, N. Y.
(Tokyo Univ. Sagamihara, Japan)
Date Acquired
June 28, 2017
Publication Date
July 26, 2016
Publication Information
Publication: SPIE Proceedings
Publisher: SPIE
Volume: 9905
Subject Category
Astrophysics
Report/Patent Number
GSFC-E-DAA-TN43514
Meeting Information
Meeting: Space Telescopes and Instrumentation 2016
Location: Edinburgh
Country: United Kingdom
Start Date: June 26, 2016
Sponsors: International Society for Optical Engineering
Funding Number(s)
CONTRACT_GRANT: NNG17PT01A
CONTRACT_GRANT: NNG15CR66C
CONTRACT_GRANT: DE-AC02-98CH10886
Distribution Limits
Public
Copyright
Other
Keywords
detectors
calibration
x-ray spectroscopy
microcalorimeter

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