24 July 2014 Soft x-ray spectrometer (SXS): the high-resolution cryogenic spectrometer onboard ASTRO-H
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Abstract
We present the development status of the Soft X-ray Spectrometer (SXS) onboard the ASTRO-H mission. The SXS provides the capability of high energy-resolution X-ray spectroscopy of a FWHM energy resolution of < 7eV in the energy range of 0.3 – 10 keV. It utilizes an X-ray micorcalorimeter array operated at 50 mK. The SXS microcalorimeter subsystem is being developed in an EM-FM approach. The EM SXS cryostat was developed and fully tested and, although the design was generally confirmed, several anomalies and problems were found. Among them is the interference of the detector with the micro-vibrations from the mechanical coolers, which is the most difficult one to solve. We have pursued three different countermeasures and two of them seem to be effective. So far we have obtained energy resolutions satisfying the requirement with the FM cryostat.
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Kazuhisa Mitsuda, Richard L. Kelley, Hiroki Akamatsu, Thomas Bialas, Kevin R. Boyce, Gregory V. Brown, Edgar Canavan, Meng Chiao, Elisa Costantini, Jan-Willem den Herder, Cor de Vries, Michael J. DiPirro, Megan E. Eckart, Yuichiro Ezoe, Ryuichi Fujimoto, Daniel Haas, Akio Hoshino, Kumi Ishikawa, Yoshitaka Ishisaki, Naoko Iyomoto, Caroline A. Kilbourne, Mark Kimball, Shunji Kitamoto, Saori Konami, Maurice A. Leutenegger, Dan McCammon, Joseph Miko, Ikuyuki Mitsuishi, Hiroshi Murakami, Masahide Murakami, Hirofumi Noda, Mina Ogawa, Takaya Ohashi, Atsushi Okamoto, Naomi Ota, Stéphane Paltani, F. Scott Porter, Kosuke Sato, Yoichi Sato, Makoto Sawada, Hiromi Seta, Keisuke Shinozaki, Peter J. Shirron, Gary A. Sneiderman, Hiroyuki Sugita, Andrew Szymkowiak, Yoh Takei, Toru Tamagawa, Makoto S. Tashiro, Yukikatsu Terada, Masahiro Tsujimoto, Shinya Yamada, Noriko Y. Yamasaki, "Soft x-ray spectrometer (SXS): the high-resolution cryogenic spectrometer onboard ASTRO-H", Proc. SPIE 9144, Space Telescopes and Instrumentation 2014: Ultraviolet to Gamma Ray, 91442A (24 July 2014); doi: 10.1117/12.2057199; https://doi.org/10.1117/12.2057199
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