XRISM上的Xtend系统软 X 射线成像仪
天体物理仪器与方法
2025-02-13 v1
摘要
软 X 射线成像仪（SXI）是XRISM（X射线成像与光谱任务）上安装的Xtend软 X 射线成像望远镜的X射线电尖晶体阵列（CCD）相机。该系统选为Hitomi X射线卫星的恢复任务，于2023年9月7日成功发射。为最大化XRISM的科学产出，我们为Xtend系统设定了要求，并发现与Hitomi/SXI或类似方案（即采用2×2阵列背照式CCD，深度为200微米的耗尽层）在搭配X射线镜组件时，具有实际优势。我们基于Hitomi/SXI设计XRISM/SXI，实现0.4-13 keV能量范围内38'×38'的宽视场。将若干重要改进引入CCD芯片设计，以提升光学遮光能力和抗宇宙射线能力，降低轨道上电荷传递效率的退化。在XRISM发射前，SXI的成像与光谱能力已通过完整飞行模型配置或等效方案在地面实验中得到充分研究，确认满足要求。CCDs的光学遮光能力、制冷与温度控制性能以及对入射X射线的透射率和量子效率也均达到要求。因此，我们成功完成了XRISM SXI的前 flight开发。
引用
@article{arxiv.2502.08030,
title = {Soft X-ray Imager of the Xtend system onboard XRISM},
author = {Hirofumi Noda and Koji Mori and Hiroshi Tomida and Hiroshi Nakajima and Takaaki Tanaka and Hiroshi Murakami and Hiroyuki Uchida and Hiromasa Suzuki and Shogo Benjamin Kobayashi and Tomokage Yoneyama and Kouichi Hagino and Kumiko Nobukawa and Hideki Uchiyama and Masayoshi Nobukawa and Hironori Matsumoto and Takeshi Go Tsuru and Makoto Yamauchi and Isamu Hatsukade and Hirokazu Odaka and Takayoshi Kohmura and Kazutaka Yamaoka and Tessei Yoshida and Yoshiaki Kanemaru and Junko Hiraga and Tadayasu Dotani and Masanobu Ozaki and Hiroshi Tsunemi and Jin Sato and Toshiyuki Takaki and Yuta Terada and Keitaro Miyazaki and Kohei Kusunoki and Yoshinori Otsuka and Haruhiko Yokosu and Wakana Yonemaru and Kazuhiro Ichikawa and Hanako Nakano and Reo Takemoto and Tsukasa Matsushima and Reika Urase and Jun Kurashima and Kotomi Fuchi and Kaito Hayakawa and Masahiro Fukuda and Takamitsu Kamei and Yoh Asahina and Shun Inoue and Amano Yuki and Yuma Aoki and Yamato Ito and Tomoya Kamatani and Kouta Takayama and Takashi Sako and Marina Yoshimoto and Kohei Shima and Mayu Higuchi and Kaito Ninoyu and Daiki Aoki and Shun Tsunomachi and Kiyoshi Hayashida},
journal= {arXiv preprint arXiv:2502.08030},
year = {2025}
}
备注
14 pages, 11 figures, 3 tables, Accepted for publication in PASJ XRISM special issue