13 September 2011 Development of the soft x-ray imager (SXI) for ASTRO-H
Author Affiliations +
Soft X-ray Imager (SXI) is a CCD camera onboard the ASTRO-H satellite which is scheduled to be launched in 2014. The SXI camera contains four CCD chips, each with an imaing aread of 31mmx31 mm, arrayed in mosaic, which cover the whole FOV area of 38'x38'. The SXI CCD of which model name is HPK Pch-NeXT4 is a P-channel type, back-illuminated, fully depleted device with a thickness of 200μm. We have developed an engineering model of the SXI camera body with coolers, and analog electronics for them. Combined with the bread board digital electronics, we succeeded in operation the whole the SXI system. The CCDs are cooled down to -120°C with this system, and X-rays from 55Fe sources are detected. Although optimization of the system is in progress, the energy resolution of typical 200 eV and best 156 eV (FWHM) at 5.9 keV are obtained. The readout noise is 10 e- to 15 e-, and to be improved its goal value of 5 e-. On-going function tests and environment tests reveal some issues to be solved until the producntion of the SXI flight model in 2012.
© (2011) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Kiyoshi Hayashida, Hiroshi Tsunemi, Takeshi Go Tsuru, Tadayasu Dotani, Hiroshi Nakajima, Naohisa Anabuki, Masanobu Ozaki, Chikara Natsukari, Junko S. Hiraga, Hiroshi Tomida, Takayoshi Kohmura, Hiroshi Murakami, Koji Mori, Makoto Yamauchi, Isamu Hatsukade, Aya Bamba, Hiroyuki Uchida, Masayoshi Nobukawa, Shutaro Ueda, Takahisa Fujinaga, Keiko Matsuta, Takao Ohnishi, John P. Doty, "Development of the soft x-ray imager (SXI) for ASTRO-H", Proc. SPIE 8145, UV, X-Ray, and Gamma-Ray Space Instrumentation for Astronomy XVII, 814505 (13 September 2011); doi: 10.1117/12.893400; https://doi.org/10.1117/12.893400


An overview of MAXI onboard JEM EF of the International...
Proceedings of SPIE (September 19 2007)
Soft x-ray imager (SXI) onboard ASTRO-H
Proceedings of SPIE (September 17 2012)
Penn State Imaging X-Ray Spectrometer
Proceedings of SPIE (November 27 1989)
The SXI: CCD camera onboard the NeXT mission
Proceedings of SPIE (July 15 2008)

Back to Top