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29 September 2004 Onboard data-processing architecture of the soft x-ray imager (SXI) on NeXT satellite
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NeXT is the X-ray satellite proposed for the next Japanese space science mission. While the satellite total mass and the launching vehicle are similar to the prior satellite Astro-E2, the sensitivity is much improved; it requires all the components to be lighter and faster than previous architecture. This paper shows the data processing architecture of the X-ray CCD camera system SXI (Soft X-ray Imager), which is the top half of the WXI (Wide-band X-ray Imager) of the sensitivity in 0.2-80keV. The system is basically a variation of Astro-E2 XIS, but event extraction speed is much faster than it to fulfill the requirements coming from the large effective area and fast exposure period. At the same time, data transfer lines between components are redesigned in order to reduce the number and mass of the wire harnesses that limit the flexibility of the component distribution.
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Masanobu Ozaki, Tadayasu Dotani, Hiroshi Tsunemi, Kiyoshi Hayashida, and Takeshi Go Tsuru "Onboard data-processing architecture of the soft x-ray imager (SXI) on NeXT satellite", Proc. SPIE 5501, High-Energy Detectors in Astronomy, (29 September 2004);


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