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1 March 2018 In-flight performance of pulse-processing system of the ASTRO-H/Hitomi soft x-ray spectrometer
Yoshitaka Ishisaki, Shinya Yamada, Hiromi Seta, Makoto S. Tashiro, Sawako Takeda, Yukikatsu Terada, Yuka Kato, Masahiro Tsujimoto, Shu Koyama, Kazuhisa Mitsuda, Makoto Sawada, Kevin R. Boyce, Meng P. Chiao, Tomomi Watanabe, Maurice A. Leutenegger, Megan E. Eckart, Frederick Scott Porter, Caroline Anne Kilbourne
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Journal of Astronomical Telescopes, Instruments, and Systems, Vol. 4, Issue 1, 011217 (March 2018). https://doi.org/10.1117/1.JATIS.4.1.011217
Abstract
We summarize results of the initial in-orbit performance of the pulse shape processor (PSP) of the soft x-ray spectrometer instrument onboard ASTRO-H (Hitomi). Event formats, kind of telemetry, and the pulse-processing parameters are described, and the parameter settings in orbit are listed. The PSP was powered-on 2 days after launch, and the event threshold was lowered in orbit. The PSP worked fine in orbit, and there was neither memory error nor SpaceWire communication error until the break-up of spacecraft. Time assignment, electrical crosstalk, and the event screening criteria are studied. It is confirmed that the event processing rate at 100% central processing unit load is ∼200  c  /  s  /  array, compliant with the requirement on the PSP.
CC BY: © The Authors. Published by SPIE under a Creative Commons Attribution 4.0 Unported License. Distribution or reproduction of this work in whole or in part requires full attribution of the original publication, including its DOI.
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Yoshitaka Ishisaki, Shinya Yamada, Hiromi Seta, Makoto S. Tashiro, Sawako Takeda, Yukikatsu Terada, Yuka Kato, Masahiro Tsujimoto, Shu Koyama, Kazuhisa Mitsuda, Makoto Sawada, Kevin R. Boyce, Meng P. Chiao, Tomomi Watanabe, Maurice A. Leutenegger, Megan E. Eckart, Frederick Scott Porter, and Caroline Anne Kilbourne "In-flight performance of pulse-processing system of the ASTRO-H/Hitomi soft x-ray spectrometer," Journal of Astronomical Telescopes, Instruments, and Systems 4(1), 011217 (1 March 2018). https://doi.org/10.1117/1.JATIS.4.1.011217
Received: 18 September 2017; Accepted: 19 January 2018; Published: 1 March 2018
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Cited by 8 scholarly publications.
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KEYWORDS
Field programmable gate arrays
X-rays
Electroluminescence
Sensors
Space operations
Calibration
Spectroscopy
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