On-ground calibration of XRISM/Xtend CCD

Tomokage Yoneyama; Hirofumi Noda; Maho Hanaoka; Kiyoshi Hayashida; Koki Okazaki; Kazunori Asakura; Yoshiaki Kanemaru; Jin Sato; Toshiyuki Takaki; Koji Mori; Takashi Sako; Masayoshi Nobukawa; Mariko Saito; Kumiko K. Nobukawa; Hiroshi Murakami; Yuki Amano; Hiroyuki Uchida; Hideki Uchiyama; Hiroshi Tomida; Hiroshi Nakajima; Kengo Hattori; Shotaro Sakuma; Ayami Ishikura; Hironori Matsumoto; Hiromichi Okon; Takaaki Tanaka; Takeshi G. Tsuru; Yukino Urabe; Junko S. Hiraga; Akira Kashimura; Shogo B. Kobayashi; Kouichi Hagino

doi:10.1117/12.2561524

13 December 2020 On-ground calibration of XRISM/Xtend CCD

Tomokage Yoneyama, Hirofumi Noda, Maho Hanaoka, Kiyoshi Hayashida, Koki Okazaki, Kazunori Asakura, Yoshiaki Kanemaru, Jin Sato, Toshiyuki Takaki, Koji Mori, Takashi Sako, Masayoshi Nobukawa, Mariko Saito, Kumiko K. Nobukawa, Hiroshi Murakami, Yuki Amano, Hiroyuki Uchida, Hideki Uchiyama, Hiroshi Tomida, Hiroshi Nakajima, Kengo Hattori, Shotaro Sakuma, Ayami Ishikura, Hironori Matsumoto, Hiromichi Okon, Takaaki Tanaka, Takeshi G. Tsuru, Yukino Urabe, Junko S. Hiraga, Akira Kashimura, Shogo B. Kobayashi, Kouichi Hagino

Author Affiliations +

Proceedings Volume 11444, Space Telescopes and Instrumentation 2020: Ultraviolet to Gamma Ray; 1144425 (2020) https://doi.org/10.1117/12.2561524
Event: SPIE Astronomical Telescopes + Instrumentation, 2020, Online Only

Abstract

X-Ray Imaging and Spectroscopy Mission (XRISM) is the seventh Japanese X-ray astronomical satellite scheduled to be launched in the Japanese fiscal year 2022. XRISM has two mission instruments, “Resolve”, a soft X-ray spectrometer, and “Xtend”, a soft X-ray imager. The Former is an X-ray micro-calorimeter that has ∼ 5 eV of energy resolution with 3′ × 3 ′ of field of view. The Latter is an X-ray CCD camera with 38′ × 38′ of field of view. Both instruments are placed on the focal plane of X-ray telescopes, X-ray Mirror Assembly (XMA). Xtend CCDs are designed almost the same as those of Hitomi (ASTRO-H), whereas some improvements have been applied. In 2019, flight-model (FM) candidates of Xtend CCDs were fabricated by Hamamatsu Photonics K.K. We performed screening experiments to examine whether they met requirements or not, and then selected the best four chips as the FM. We then performed on-ground calibration on August 2019 and September 2019 for the FM chips to determine the gain correction parameters and to construct the detector response with several energies of monochromatic X-ray. In this paper, we report screening, selection, and on-ground calibration processes, especially focusing on the response verification.

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Tomokage Yoneyama, Hirofumi Noda, Maho Hanaoka, Kiyoshi Hayashida, Koki Okazaki, Kazunori Asakura, Yoshiaki Kanemaru, Jin Sato, Toshiyuki Takaki, Koji Mori, Takashi Sako, Masayoshi Nobukawa, Mariko Saito, Kumiko K. Nobukawa, Hiroshi Murakami, Yuki Amano, Hiroyuki Uchida, Hideki Uchiyama, Hiroshi Tomida, Hiroshi Nakajima, Kengo Hattori, Shotaro Sakuma, Ayami Ishikura, Hironori Matsumoto, Hiromichi Okon, Takaaki Tanaka, Takeshi G. Tsuru, Yukino Urabe, Junko S. Hiraga, Akira Kashimura, Shogo B. Kobayashi, and Kouichi Hagino "On-ground calibration of XRISM/Xtend CCD", Proc. SPIE 11444, Space Telescopes and Instrumentation 2020: Ultraviolet to Gamma Ray, 1144425 (13 December 2020); https://doi.org/10.1117/12.2561524

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