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Xtend, the soft x-ray imaging telescope for the X-Ray Imaging and Spectroscopy Mission (XRISM)


Journal article


K. Mori, H. Tomida, H. Nakajima, T. Okajima, H. Noda, Takaaki Tanaka, H. Uchida, K. Hagino, S. Kobayashi, Hiromasa Suzuki, Tessei Yoshida, H. Murakami, H. Uchiyama, M. Nobukawa, K. Nobukawa, T. Yoneyama, H. Matsumoto, T. Tsuru, M. Yamauchi, I. Hatsukade, M. Ishida, Y. Maeda, T. Hayashi, K. Tamura, R. Boissay-Malaquin, Toshiki Sato, J. Hiraga, T. Kohmura, K. Yamaoka, T. Dotani, M. Ozaki, H. Tsunemi, Y. Kanemaru, J. Sato, Toshiyuki Takaki, Yuta Terada, Keitaro Miyazaki, Kohei Kusunoki, Y. Otsuka, Haruhiko Yokosu, Wakana Yonemaru, Yoh Asahina, K. Asakura, M. Yoshimoto, Yuichi Ode, J. Sato, T. Hakamata, Mio Aoyagi, Yuma Aoki, Shun Tsunomachi, T. Doi, Daiki Aoki, Kaito Fujisawa, M. Kitajima, K. Hayashida
Astronomical Telescopes + Instrumentation, 2022

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APA   Click to copy
Mori, K., Tomida, H., Nakajima, H., Okajima, T., Noda, H., Tanaka, T., … Hayashida, K. (2022). Xtend, the soft x-ray imaging telescope for the X-Ray Imaging and Spectroscopy Mission (XRISM). Astronomical Telescopes + Instrumentation.


Chicago/Turabian   Click to copy
Mori, K., H. Tomida, H. Nakajima, T. Okajima, H. Noda, Takaaki Tanaka, H. Uchida, et al. “Xtend, the Soft x-Ray Imaging Telescope for the X-Ray Imaging and Spectroscopy Mission (XRISM).” Astronomical Telescopes + Instrumentation (2022).


MLA   Click to copy
Mori, K., et al. “Xtend, the Soft x-Ray Imaging Telescope for the X-Ray Imaging and Spectroscopy Mission (XRISM).” Astronomical Telescopes + Instrumentation, 2022.


BibTeX   Click to copy

@article{k2022a,
  title = {Xtend, the soft x-ray imaging telescope for the X-Ray Imaging and Spectroscopy Mission (XRISM)},
  year = {2022},
  journal = {Astronomical Telescopes + Instrumentation},
  author = {Mori, K. and Tomida, H. and Nakajima, H. and Okajima, T. and Noda, H. and Tanaka, Takaaki and Uchida, H. and Hagino, K. and Kobayashi, S. and Suzuki, Hiromasa and Yoshida, Tessei and Murakami, H. and Uchiyama, H. and Nobukawa, M. and Nobukawa, K. and Yoneyama, T. and Matsumoto, H. and Tsuru, T. and Yamauchi, M. and Hatsukade, I. and Ishida, M. and Maeda, Y. and Hayashi, T. and Tamura, K. and Boissay-Malaquin, R. and Sato, Toshiki and Hiraga, J. and Kohmura, T. and Yamaoka, K. and Dotani, T. and Ozaki, M. and Tsunemi, H. and Kanemaru, Y. and Sato, J. and Takaki, Toshiyuki and Terada, Yuta and Miyazaki, Keitaro and Kusunoki, Kohei and Otsuka, Y. and Yokosu, Haruhiko and Yonemaru, Wakana and Asahina, Yoh and Asakura, K. and Yoshimoto, M. and Ode, Yuichi and Sato, J. and Hakamata, T. and Aoyagi, Mio and Aoki, Yuma and Tsunomachi, Shun and Doi, T. and Aoki, Daiki and Fujisawa, Kaito and Kitajima, M. and Hayashida, K.}
}

Abstract

Xtend is a soft x-ray imaging telescope developed for the x-ray imaging and spectroscopy mission (XRISM). XRISM is scheduled to be launched in the Japanese fiscal year 2022. Xtend consists of the soft x-ray imager (SXI), an x-ray CCD camera, and the x-ray mirror assembly (XMA), a thin-foil-nested conically approximated Wolter-I optics. The SXI uses the P-channel, back-illuminated type CCD with an imaging area size of 31mm on a side. The four CCD chips are arranged in a 2×2 grid and can be cooled down to −120 °C with a single-stage Stirling cooler. The XMA nests thin aluminum foils coated with gold in a confocal way with an outer diameter of 45 cm. A pre-collimator is installed in front of the x-ray mirror for the reduction of the stray light. Combining the SXI and XMA with a focal length of 5.6m, a field of view of 38′ × 38′ over the energy range from 0.4 to 13 keV is realized. We have completed the fabrication of the flight model of both SXI and XMA. The performance verification has been successfully conducted in a series of sub-system level tests. We also carried out on-ground calibration measurements and the data analysis is ongoing.


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