Study for Space Radiation Protection with Effective Shielding Techniques for Human Exploration

• Project/Area Number: 26506032
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: 宇宙生命学
• Research Institution: Japan Aerospace EXploration Agency
• Principal Investigator: NAGAMATSU AIKO 国立研究開発法人宇宙航空研究開発機構, 有人宇宙技術部門, 主幹研究開発員 (00421868)
• Co-Investigator(Kenkyū-buntansha): 俵 裕子 大学共同利用機関法人高エネルギー加速器研究機構, 放射線科学センター, 研究員 (30188453)
• Research Collaborator: SATO Tatsuhiko 日本原子力研究開発機構, 放射線防護グループ, 主幹研究員 ; YASUDA Nakahiro 福井大学, 附属国際原子力工学研究所, 教授 ; KODAIRA Satoshi 量子科学技術研究開発機構, 放射線医学総合研究所, 主任研究員
• Project Period (FY): 2014-04-01 – 2017-03-31
• Project Status: Completed (Fiscal Year 2016)
• Budget Amount: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000); Fiscal Year 2016: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000); Fiscal Year 2015: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000); Fiscal Year 2014: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
• Keywords: 宇宙放射線 / 宇宙飛行士 / 被ばく管理 / 国際宇宙ステーション / 有人探査 / 放射線防護 / 遮蔽 / PADLES / 遮蔽材料 / 線量計測 / 被ばく線量 / PHITS / 有人惑星探査

Outline of Final Research Achievements

Strategies for reducing radiation dose are vital on Ultra-long stay for human space exploration, because expedition duration for each astronaut is restricted by the career dose limit due to space radiation. We conducted dose estimations using virtual modules with the equivalent thickness of a ISS KIBO hull in LEO/BLEO/Moon. This simulation system is incorporated with the results from ground performance tests, space experiments outside/inside of ISS. Following results are obtained:
- Doses in BLEO are increased by 3 times than those in LEO,
- By adding with polythene 15 g/cm2, dose equivalents decreased by 30% in LEO and 22% in BLEO.

Research Products

• [Int'l Joint Research] IBMPロシア科学アカデミー医学生物学諸問題研究所(ロシア連邦)
• [Int'l Joint Research] DLR ドイツ航空宇宙センター(ドイツ)
• [Journal Article] pace and Terrestiral Cosmic-Ray Environments Estimated using PHITS and EXPACS (2017)
  • Author(s): Tatsuhiko Sato, Shinichiro Abe, Aiko Nagamatsu,
  • Journal Title: The 11th International Workshop on Radiation Effects on Semiconductor Devices for Space Applications (11th RASEDA) Volume: -
  • Peer Reviewed
• [Journal Article] PHITS Simulations for Development of Space Radiation Shielding Materials (2017)
  • Author(s): Aki GOTO, Kazunori SHIMAZAKI, Yugo KIMOTO, Haruhisa MATSUMOTO, and Aiko NAGAMATSU
  • Journal Title: ISTS 2017 Volume: -
  • NAID: 120006827430
  • Peer Reviewed
• [Journal Article] Healthy offspring from freeze-dried mouse spermatozoa held on the International Space Station for 9 months (2017)
  • Author(s): Sayaka Wakayama, Yuko Kamada, Kaori Yamanaka, Takashi Kohda, Hiromi Suzuki, Toru Shimazu,
  • Journal Title: PNAS Volume: 1 Issue: 23 Pages: 1-6
  • DOI: 10.1073/pnas.1701425114
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Space radiation dosimetry to evaluate the effect of polyethylene shielding in the Russian segment of the International Space Station. (2015)
  • Author(s): Nagamatsu A, Casolino M, Larsson O, Ito T, Yasuda N, Kitajo K, Shimada K, Takeda , Tsuda S and Sato T
  • Journal Title: Physics Procedia Volume: 80 Pages: 25-35
  • DOI: 10.1016/j.phpro.2015.11.083
  • NAID: 120006832409
  • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Measurements of heavy-ion anisotropy and dose rates in the Russian section of the International Space Station with the Sileye-3/Alteino detector (2015)
  • Author(s): Larsson, O., et al.
  • Journal Title: Journal of Physics G: Nuclear and Particle Physics Volume: 42 Issue: 2 Pages: 025002-025002
  • DOI: 10.1088/0954-3899/42/2/025002
  • Peer Reviewed / Open Access
• [Presentation] 日本の宇宙航空研究開発を支える女性技術者達 (2017)
  • Author(s): 永松愛子
  • Organizer: 日本女性技術者フォーラム定例会
  • Place of Presentation: 茨城県つくば市
  • Year and Date: 2017-03-25
• [Presentation] 宇宙における長期滞在と放射線の防護 (2017)
  • Author(s): 永松愛子
  • Organizer: 第２５回 放射線利用総合シンポジウム
  • Place of Presentation: 中の島
  • Year and Date: 2017-01-23
  • Invited
• [Presentation] 宇宙放射線による被ばく管理のための宇宙放射線計測と基盤研究 (2017)
  • Author(s): 永松愛子
  • Organizer: 日本宇宙航空環境医学会 第12回宇宙航空医学認定医講習プログラム
  • Place of Presentation: 茨城県つくば市
  • Year and Date: 2017-01-16
  • Invited
• [Presentation] 宇宙放射線遮蔽材料に関する研究開発部門の取り組み (2016)
  • Author(s): 後藤亜希、島﨑一紀、木本雄吾、松本晴久、永松愛子
  • Organizer: 第13回宇宙環境シンポジウム
  • Place of Presentation: 茨城県つくば市
  • Year and Date: 2016-11-01
• [Presentation] 将来有人探査にむけた宇宙放射線防護研究の全体像 (2016)
  • Author(s): 永松愛子
  • Organizer: 第62回宇宙航空環境医学会・宇宙生物科学会合同大会
  • Place of Presentation: 愛知県名古屋市
  • Year and Date: 2016-10-15
  • Invited
• [Presentation] Shielding evaluation of the ISS ‘KIBO’ hull walls for space radiation between radiation dosimetry inside/outside and PHITS simulation (2016)
  • Author(s): A. Nagamatsu, K. Murakami, S. Araki, K. Kitajo, K. Shimada, H. Kumagai, H. Tawara, T. Berger, G. Reitz:
  • Organizer: WRMIIISS-21
  • Place of Presentation: オランダ
  • Year and Date: 2016-09-06
  • Int'l Joint Research / Invited
• [Presentation] 有人宇宙船内における最適な遮蔽材料と遮蔽厚の検討(Ⅱ) (2016)
  • Author(s): 島田 健、永松愛子、佐藤達彦、明石小百合、西啓輔、武田和雄
  • Organizer: 第40回（2016年春季）応用物理学会
  • Place of Presentation: 東京、東京工業大学大岡山キャンパス
  • Year and Date: 2016-03-18
• [Presentation] Variation of long-term space radiation monitoring during the solar minimum to maximum of the 24th solar cycle in the ISS ‘KIBO’ (2016)
  • Author(s): Aiko Nagamatsu、Nakahiro Yasuda、Ken Shimada, Sayuri Sakane、Tetsuro Mizuno、Vyacheslav A. Shurshakov、 Raisa Tolochek、Igor V. Nikolaev、Kazuo Takeda、Tatsuhiko Sato
  • Organizer: the International Symposium on Radiation Detectors and Their Uses 2016
  • Place of Presentation: つくば、国立研究開発法人高エネルギー加速器研究機構
  • Year and Date: 2016-01-18
  • Int'l Joint Research
• [Presentation] Space and Terrestiral Cosmic-Ray Environments Estimated using PHITS and EXPACS (2015)
  • Author(s): Tatsuhiko Sato, Shinichiro Abe, Aiko Nagamatsu
  • Organizer: The 11th International Workshop on Radiation Effects on Semiconductor Devices for Space Applications (11th RASEDA)
  • Place of Presentation: 群馬、桐生市市民文化会館
  • Year and Date: 2015-11-11
  • Int'l Joint Research
• [Presentation] Variation of long term space radiation monitoring and the PHITS simulation during the solar minimum to maximum of the 24th solar cycle inside/outside of the ISS ‘KIBO’ (2015)
  • Author(s): 永松愛子、伊藤剛、佐藤達彦、北城圭一、島田健、坂根小百合、武田和雄、仁井田浩二、安田仲宏
  • Organizer: Workshops on Radiation Monitoring for the International Space Station
  • Place of Presentation: ケルン、ドイツDLR航空宇宙センター
  • Year and Date: 2015-09-10
  • Int'l Joint Research
• [Presentation] 太陽高エネルギー陽子イベントによる宇宙線被ばく (2015)
  • Author(s): 片岡龍峰，久保勇樹，塩田大幸，八代誠司，桑原孝夫,永松愛子,保田浩志, 仁井田浩二，岩元洋介, 橋本慎太郎, 小川達彦, 古田琢哉, 安部晋一郎, 甲斐健師, 松田規宏, 岩瀬広
  • Organizer: 第10回宇宙天気ユーザーズフォーラム
  • Place of Presentation: 東京、国立研究開発法人情報通信研究機構
  • Year and Date: 2015-07-17
• [Presentation] Space Radiation Dosimetry in the ISS, spearheading the following steps on the pathway to human space exploration beyond low-Earth orbit (2015)
  • Author(s): 永松 愛子
  • Organizer: The 15th International Congress of Radiation Research (ICRR 2015)
  • Place of Presentation: 京都、国際会議場
  • Year and Date: 2015-05-28
  • Int'l Joint Research
• [Presentation] Space Radiation Dosimetry in the ISS, spearheading the following steps on the pathway to human space exploration beyond low-Earth orbit (2015)
  • Author(s): Aiko Nagamatsu
  • Organizer: The 15th International Congress of Radiation Research (ICRR 2015)
  • Place of Presentation: 京都
  • Year and Date: 2015-05-28
  • Invited
• [Presentation] Space Radiation Dosimetry in Kibo Module, Part I: Measurement (2015)
  • Author(s): Aiko Nagamatsu, Tatsuhiko Sato, Keiichi Kitajo, Ken Shimada, Sayuri Sakane, Kazuo Takeda, Koji Niita, Nakahiro Yasuda
  • Organizer: Heavy Ion in Therapy and Space Radiation Symposium 2015, Osaka Satellite Symposium of ICRR 2015
  • Place of Presentation: 大阪、あべのハルカス２５階会議場
  • Year and Date: 2015-05-23
  • Int'l Joint Research
• [Presentation] Space Radiation Dosimetry in Kibo Module, Part II: Simulation (2015)
  • Author(s): Tatsuhiko Sato, Aiko Nagamatsu, Kazuo Takeda, Koji Niita, Monika Puchalska, Lembit Sihver
  • Organizer: Heavy Ion in Therapy and Space Radiation Symposium 2015, Osaka Satellite Symposium of ICRR 2015
  • Place of Presentation: 大阪、あべのハルカス２５階会議場
  • Year and Date: 2015-05-23
  • Int'l Joint Research
• [Presentation] Space Radiation Dosimetry in Kibo Module, (2015)
  • Author(s): Aiko Nagamatsu, Tatsuhiko Sato, Keiichi Kitajo, Ken Shimada, Sayuri Sakane, Kazuo Takeda, Koji Niita, Nakahiro Yasuda
  • Organizer: Heavy Ion in Therapy and Space Radiation Symposium 2015, Osaka Satellite Symposium of ICRR 2015
  • Place of Presentation: 大阪
  • Year and Date: 2015-05-23
• [Presentation] Space Radiation Dosimetry in Kibo Module, Part II: Simulation (2015)
  • Author(s): Tatsuhiko Sato, Aiko Nagamatsu, Kazuo Takeda, Koji Niita, Monika Puchalska, and Lembit Sihver
  • Organizer: Heavy Ion in Therapy and Space Radiation Symposium 2015, Osaka Satellite Symposium of ICRR 2015
  • Place of Presentation: 大阪
  • Year and Date: 2015-05-23
• [Presentation] 第24期太陽活動極小期から極大期(2008-2013年)における国際宇宙ステーション日本実験棟「きぼう」船内の宇宙放射線環境の変動について (2015)
  • Author(s): 坂根 小百合, 北城 圭一, 島田 健, 永松 愛子, 安田 仲宏
  • Organizer: 第29回固体飛跡検出器研究会
  • Place of Presentation: 敦賀
  • Year and Date: 2015-03-31
• [Presentation] 有人宇宙船における最適な遮蔽材料 と遮蔽厚の検討 (2015)
  • Author(s): 島田 健 、永松愛子 、佐藤達彦 、北城圭一 、坂根小百合 、武田和雄 、安田仲宏 、伊藤剛
  • Organizer: 第62回応用物理学会春季学術講演会
  • Place of Presentation: 平塚
  • Year and Date: 2015-03-11
• [Presentation] 月面放射線環境計測準備状況 (2015)
  • Author(s): 永松愛子, 上野 遥, 松本 晴久
  • Organizer: 第5回 月と火星の縦孔・地下空洞探査研究会
  • Place of Presentation: 相模原
  • Year and Date: 2015-03-02
• [Presentation] JAXA Space Radiation research in the ISS and beyond low-Earth orbit (2014)
  • Author(s): Aiko Nagamatsu
  • Organizer: Multilateral Radiation Health Working Group Face-to-face Meeting #20
  • Place of Presentation: 広島
  • Year and Date: 2014-10-23
• [Presentation] ISS/有人惑星探査と宇宙放射線 (2014)
  • Author(s): 永松 愛子
  • Organizer: 日本放射線影響学会第57回大会 宇宙放射線研究会シンポジウム
  • Place of Presentation: 鹿児島
  • Year and Date: 2014-10-03
• [Presentation] Space radiation dosimetry by PADLES in the ISS Russian segment to evaluate the effects of polyethylene shielding and different tissue equivalent materials (2014)
  • Author(s): Aiko Nagamatsu, Marco Casolino, Keiichi Kitajo, Ken Shimada, Shuichi Tsuda, Tsuyoshi Ito, and Nakahiro Yasuda
  • Organizer: 26th International Conference on Nuclear Tracks in Solids
  • Place of Presentation: 神戸
  • Year and Date: 2014-09-15
• [Presentation] JAXA Space Radiation research in the ISS and beyond low-Earth orbit (2014)
  • Author(s): Aiko Nagamatsu
  • Organizer: Multilateral Radiation Health Working Group Face-to-face Meeting #20
  • Place of Presentation: 神戸
  • Year and Date: 2014-09-15
• [Presentation] Comparative study between Radiation Doses in the MATROSHKA Anthropomorphic Phantom and he Matoroshka-R Spherical phantom Experiment#1 aboard International Space Station ‘KIBO’ (2014)
  • Author(s): Aiko Nagamatsu, Hiroko Tawara, Tsusyoshi Ito, Keiichi Kitajo, Ken Shimada, Igor Nikolaev, Raisa Tolochek, Vyacheslav Shurshakov
  • Organizer: 19th Workshop on Radiation Monitoring for the International Space Station (WRMISS)
  • Place of Presentation: クラコフ
  • Year and Date: 2014-09-09
• [Presentation] Comparison between Measured and Simulated Radiation Doses in the Matoroshka-R Spherical phantom Experiment#1 and Area Monitoring aboard International Space Station using PADLES from May - Sep. 2012 (2014)
  • Author(s): Aiko Nagamatsu, Hiroko Tawara, Tsusyoshi Ito, Keiichi Kitajo, Ken Shimada, Igor Nikolaev, Raisa Tolochek, Vyacheslav Shurshakov
  • Organizer: COSPAR 2014
  • Place of Presentation: モスクワ
  • Year and Date: 2014-08-05
• [Presentation] Comparison between Measured and Simulated Radiation Doses in the MATROSHKA Anthropomorphic Phantom and Area Monitoring aboard International Space Station (2014)
  • Author(s): Aiko Nagamatsu, Hiroko Tawara, Tatsuhiko Sato, Keiichi Kitajo, Ken Shimada, Kazuo Takeda, ,Tsuyoshi Ito, Koji Niita, Thomas Berger and Gunther Reitz
  • Organizer: AOGS 11th Annual Meeting (AOGS2014)
  • Place of Presentation: 札幌
  • Year and Date: 2014-07-31
• [Book] 宇宙航空医学入門 (2015)
  • Author(s): 永松愛子他
  • Total Pages: 272
  • Publisher: 鳳文林出版販売
• [Book] RIST NEWS No. 53. 24-33 (2014)
  • Author(s): 永松 愛子
  • Total Pages: 10
  • Publisher: 国際宇宙ステーション「きぼう」における宇宙放射線の被ばく線量計測と次世代有人宇宙開発への応用について
• [Remarks] ISS宇宙放射線環境計測データベース
  • URL: http://iss.jaxa.jp/spacerad/
• [Remarks] 放射線と地球の旅
  • URL: https://www.jaea.go.jp/the_radiation_odyssey/pc/
• [Remarks] WRMISS 2018
  • URL: http://www.wrmiss.org/
• [Remarks] 宇宙航空研究開発機構 ISS宇宙放射線環境計測データベース
  • URL: https://ssl.tksc.jaxa.jp/spacerad/NI005.html
• [Funded Workshop] Workshop on Radiation Monitoring for the International Space Station 2018 (予定） (2016)
  • Place of Presentation: 日本開催予定、開催準備支援作業
  • Year and Date: 2016-04-01