Yoshiaki Kanemaru
(University of Miyazaki)
We have investigated the radiation hardness of a P-channel CCD developed for the X-ray CCD camera onboard the XRISM satellite. This CCD has basically the same characteristics as the one used in the previous Hitomi satellite, but newly employs a notch structure of potential for signal charges by increasing the implant concentration in the channel. The new device was exposed up to approximately 8 $\times$ 10$^{10}$ protons cm$^{-2}$ at 100 MeV. The charge transfer inefficiency was estimated as a function of radiation dose with ${}^{55}$Fe. A device without the notch structure was also examined for comparison. The result shows that the notch device has the significantly higher radiation hardness than those without the notch structure including the device adopted for Hitomi. This proves that the new CCD is radiation tolerant for the space application with a sufficient margin.
Yoshiaki Kanemaru
(University of Miyazaki)
Jin Sato
(University of Miyazaki)
Koji Mori
(University of Miyazaki)
Hiroshi Nakajima
(Kanto Gakuinn University)
Yusuke Nishioka
(Miyazaki University)
Ayaki Takeda
(University of Miyazaki)
Kiyoshi Hayashida
(Osaka University)
Hironori Matsumoto
(Osaka University)
Junichi Iwagaki
(Osaka University)
Koki Okazaki
(Osaka University)
Kazunori Asakura
(Osaka University)
Tomokage Yoneyama
(Osaka University)
Hiroyuki Uchida
(Kyoto University)
Hiromichi Okon
(Kyoto University)
Takaaki Tanaka
(Kyoto University)
Takeshi Tsuru
(Kyoto University)
Hiroshi Tomida
(Institute of Space and Astronautical Science)
Takeo Shimoi
(Institute of Space and Astronautical Science)
Takayoshi Kohmura
(Tokyo University of Science)
Kouichi Hagino
Hiroshi Murakami
(Tohoku Gakuin University)
Shogo Kobayashi
(Tokyo University of Science)
Makoto Yamauchi
(University of Miyazaki)
Isamu Hatsukade
(University of Miyazaki)
Masayoshi Nobukawa
(Nara University of Education)
Kumiko Nobukawa
(Nara Women’s University)
Junko Hiraga
(Kwansei Gakuin University)
Hideki Uchiyama
(Shizuoka University)
Kazutaka Yamaoka
(Nagoya University (JP))
Masanobu Ozaki
(Institute of Space and Astronautical Science)
Tadayasu Dotani
(Institute of Space and Astronautical Science)
Hiroshi Tsunemi
(Osaka University)
