| アイテムタイプ |
学術雑誌論文 / Journal Article(1) |
| 公開日 |
2026-01-27 |
| タイトル |
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タイトル |
CCD driving technique to suppress anomalous charge intrusion from outside the imaging area for soft X-ray imager of Xtend onboard XRISM |
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言語 |
en |
| 言語 |
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言語 |
eng |
| キーワード |
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言語 |
en |
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キーワード |
CCD driving technique |
| キーワード |
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言語 |
en |
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キーワード |
X-ray astronomy |
| キーワード |
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言語 |
en |
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キーワード |
X-ray CCD camera |
| 資源タイプ |
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資源タイプ |
journal article |
| アクセス権 |
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アクセス権 |
open access |
| 著者 |
Noda, Hirofumi
Aoyagi, Mio
森, 浩二
Tomida, Hiroshi
| en |
Tomida, Hiroshi（Personal）
JAXA Institute of Space and Astronautical Science
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Search repository
Nakajima, Hiroshi
Tanaka, Takaaki
鈴木, 寛大
WEKO
35601
e-Rad_Researcher
50915402
| ja |
鈴木, 寛大
宮崎大学
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| ja-Kana |
スズキ, ヒロマサ
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| en |
Suzuki, Hiromasa
University of Miyazaki
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Search repository
Murakami, Hiroshi
Uchida, Hiroyuki
Tsuru, Takeshi G.
Miyazaki, Keitaro
Kusunoki, Kohei
Kanemaru, Yoshiaki
| en |
Kanemaru, Yoshiaki（Personal）
JAXA Institute of Space and Astronautical Science
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Search repository
Aoki, Yuma
Nobukawa, Kumiko
Nobukawa, Masayoshi
Shima, Kohei
Yoshimoto, Marina
Asakura, Kazunori
Matsumoto, Hironori
Yoneyama, Tomokage
Kobayashi, Shogo B.
Hagino, Kouichi
Uchiyama, Hideki
Hayashida, Kiyoshi
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| 抄録 |
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内容記述タイプ |
Abstract |
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内容記述 |
The Soft X-ray Imager (SXI) is an X-ray charge-coupled device (CCD) camera of the Xtend system onboard the X-Ray Imaging and Spectroscopy Mission (XRISM), which was successfully launched on September 7, 2023 (JST). During ground cooling tests of the CCDs in 2020/2021, using the flight-model detector housing, electronic boards, and a mechanical cooler, we encountered an unexpected issue. Anomalous charges appeared outside the imaging area of the CCDs and intruded into the imaging area, causing pulse heights to stick to the maximum value over a wide region. Although this issue has not occurred in subsequent tests or in orbit so far, it could seriously affect the imaging and spectroscopic performance of the SXI if it were to happen in the future. Through experiments with non-flight-model detector components, we successfully reproduced the issue and identified that the anomalous charges intrude via the potential structure created by the charge injection (CI) electrode at the top of the imaging area. To prevent anomalous charge intrusion and maintain imaging and spectroscopic performance that satisfies the requirements, even if this issue occurs in orbit, we developed a new CCD driving technique. This technique is different from the normal operation in terms of potential structure and its changes during imaging and CI. We report an overview of the anomalous charge issue, the related potential structures, the development of the new CCD driving technique to prevent the issue, the imaging and spectroscopic performance of the new technique, and the results of experiments to investigate the cause of anomalous charges. |
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言語 |
en |
| 書誌情報 |
en : Journal of Astronomical Telescopes Instruments and Systems
巻 11,
号 4,
p. 042006,
発行日 2025-03-29
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| 出版者 |
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出版者 |
SPIE-Intl Soc Optical Eng |
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言語 |
en |
| ISSN |
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収録物識別子タイプ |
EISSN |
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収録物識別子 |
23294221 |
| ISSN |
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収録物識別子タイプ |
ISSN |
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収録物識別子 |
23294124 |
| DOI |
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関連タイプ |
isVersionOf |
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識別子タイプ |
DOI |
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関連識別子 |
https://doi.org/10.1117/1.JATIS.11.4.042006 |
| 権利 |
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権利情報 |
© The Authors. |
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言語 |
en |
| 著者版フラグ |
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出版タイプ |
VoR |
Fulltext (4.2 MB)
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