Line Gamma-ray Astronomy by the next generation Semiconductor Compton Camera
| Project/Area Number |
16H02170
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Astronomy
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| Research Institution | The University of Tokyo (2018-2019)
Japan Aerospace EXploration Agency (2016-2017) |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
渡辺 伸 国立研究開発法人宇宙航空研究開発機構, 宇宙科学研究所, 助教 (60446599)
武田 伸一郎 東京大学, カブリ数物連携宇宙研究機構, 特任助教 (80553718)
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| Project Period (FY) |
2016-04-01 – 2020-03-31
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| Project Status |
Completed (Fiscal Year 2019)
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| Budget Amount *help |
¥43,940,000 (Direct Cost: ¥33,800,000、Indirect Cost: ¥10,140,000)
Fiscal Year 2019: ¥9,100,000 (Direct Cost: ¥7,000,000、Indirect Cost: ¥2,100,000)
Fiscal Year 2018: ¥13,390,000 (Direct Cost: ¥10,300,000、Indirect Cost: ¥3,090,000)
Fiscal Year 2017: ¥12,220,000 (Direct Cost: ¥9,400,000、Indirect Cost: ¥2,820,000)
Fiscal Year 2016: ¥9,230,000 (Direct Cost: ¥7,100,000、Indirect Cost: ¥2,130,000)
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| Keywords | ガンマ線検出器 / コンプトンカメラ / ガンマ線天文学 / MeVガンマ線 / 電子飛跡追跡 / エレクトロントラッキング |
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| Outline of Final Research Achievements |
Electron tracking based Compton imaging is a key technique to improve the sensitivity of Compton cameras by measuring the initial direction of recoiled electrons. We have developed a new Si-CMOS hybrid detector as a scatterer of Compton cameras. It is a Si detector bump-bonded to a CMOS readout integrated circuit to obtain electron trajectories. To acquire the energy and the event timing, signals from back side, in which strip electrodes are implemented. are read out with a timing resolution of few μs. Images of recoiled electron trajectories are obtained successfully from CMOS side. By combining with a 2mm thick CdTe double sided detector, we constructed a Si/CdTe Compton camera. We confirmed that the initial direction of the electron is determined properly and incident directions of gamma-ray photons are successfully reconstructed. An energy resolution of 7.4 keV (FWHM) and an angular resolution of 3.1 degree (FWHM) are obtained from the camera for 662 keV gamma-rays.
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| Academic Significance and Societal Importance of the Research Achievements |
感度のギャップに埋もれて進展が妨げられている数100keV から数MeVの領域でのガンマ線天文学に革新をもたらすために、エネルギー分解能が高く、また角度分解能が高い半導体コンプトンカメラの開発が重要である。本研究で新たに開発した散乱電子の方向を測定できるSi検出器とCdTeイメージャを組み合わせたコンプトンカメラは、到来するガンマ線の方向を一意に決めることができる。これを発展させることで、天体観測ばかりではなく、放射性物質の分布の可視化や医学イメージングにおいて検知力の向上につながる。
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Report
(5 results)
Research Products
(44 results)
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[Journal Article] The FORCE mission: science aim and instrument parameter for broadband x-ray imaging spectroscopy with good angular resolution2018
Author(s)
Nakazawa, K., Mori, K., Tsuru, T. G., Ueda, Y., Awaki, H., Fukazawa, Y., Ishida, M., Matsumoto, H., Murakami, H., Okajima, T., Takahashi, T., Tsunemi, H., Zhang, W. W.
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Journal Title
Proceedings of the SPIE
Volume: 10699
Pages: 84-84
DOI
Related Report
Int'l Joint Research
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[Journal Article] Long-term test of a stacked CdTe mini-HXI setup2018
Author(s)
Maier Daniel、Horeau Benoit、Laurent Philippe、Limousin Olivier、Renaud Diana、Kawaharada Madoka、Kokubun Motohide、Sato Goro、Takahashi Tadayuki、Watanabe Shin、Nakazawa Kazuhiro、Boatella Polo Cesar
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Journal Title
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume: 912
Pages: 199-204
DOI
Related Report
Peer Reviewed / Int'l Joint Research
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[Journal Article] Fine-pitch CdTe detector for hard X-ray imaging and spectroscopy of the Sun with the FOXSI rocket experiment2016
Author(s)
Ishikawa, M. Katsuragawa, S. Watanabe, Y. Uchida, S. Takeda, T. Takahashi, S. Saito, L. Glesener, J.C. Buitrago-Casas, S. Krucker, S. Christe
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Journal Title
Journal of Geophysical Research (Space Physics)
Volume: 121
Issue: 7
Pages: 6009-6016
DOI
Related Report
Peer Reviewed / Int'l Joint Research
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[Presentation] Si/CdTeコンプトンカメラの原子物理実験における偏光測定への応用2019
Author(s)
都築豊, 渡辺伸, 大石晋平, 沼館直樹, 櫻井誠, 渡邉裕文, 中村信行, 内田悠介, 米田浩基, 小高裕和, 高橋 忠幸
Organizer
原子衝突学会第44回年会
Related Report
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[Presentation] Development of 60 micro m pitch CdTe double-sided strip detectors for the FOXSI-3 sounding rocket experiment.”, 11th International "Hiroshima" Symposium on the Development and Application of Semiconductor Tracking Detectors (HSTD11), 2017/122017
Author(s)
Kento Furukawa, Athiray P. S., Juan Camiko Buitrago Casas, Juliana Vievering, Koichi Hagino, Lindsay Glesener, Sam Krucker, Shin Watanabe, Shin'ichiro Takada, Shin'nosuke Ishikawa, Sophie Musset, Steven Chritste, Tadayuki Takahashi
Organizer
ymposium on the Development and Application of Semiconductor Tracking Detectors (HSTD11)
Related Report
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[Presentation] Double-photon emission imaging of 111-In with a high-resolution Si/CdTe Compton camera2017
Author(s)
S. Takeda, T. Orita, F. Moriyama, H. Sugawara, G. Yabu, H. Yoneda, S. Watanabe, T. Takahashi, Y. Mizumachi, M. Uenomachi, Y. Yoshihara, H. Takahashi, K. Shimazoe
Organizer
ymposium on the Development and Application of Semiconductor Tracking Detectors (HSTD11)
Related Report
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[Book] 宇宙物理学ハンドブック2020
Author(s)
高原文郎、家正則、小玉英雄、高橋忠幸
Total Pages
912
Publisher
朝倉書店
ISBN
9784254131277
Related Report
