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21 results on '"Komiyama, Tatsuto"'

3. System of radiological protection: Towards a consistent framework on Earth and in space

Author

Rühm, Werner, primary, Ban, Nobuhiko, additional, Chen, Jing, additional, Li, Chunsheng, additional, Dobynde, Mikhail, additional, Durante, Marco, additional, El-Jaby, Samy, additional, Komiyama, Tatsuto, additional, Ozasa, Kotaro, additional, Sato, Tatsuhiko, additional, Semones, Edward J, additional, Shavers, Mark, additional, Shurshakov, Vyacheslav, additional, Straube, Ulrich, additional, Tomi, Leena, additional, Ulanowski, Alexander, additional, Vaillant, Ludovic, additional, Xu, Zhenhua, additional, Zervides, Constantinos, additional, and Zhou, Guangming, additional

Published
2024
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7. Present Status of Development for the Domestic Space Dosimeters

Author

Terasawa, Kazuhiro, Sasaki, Shin-ichi, Kishimoto, Yuji, Takahashi, Kazutoshi, Saito, Kiwamu, Tawara, Hiroko, Masuda, Daisuke, Ikeda, Naomi, Nagamatsu, Aiko, Katsuta, Masato, Matsumoto, Haruhisa, Komiyama, Tatsuto, Fuse, Tetsuhito, Miuchi, Kentaro, Tanimori, Toru, Kubo, Hidetoshi, Kitamura, Hisashi, and Kodaira, Satoshi

Subjects
HIMAC, μ-PIC, TEPC, RRMD-III, LET, Space Dosimetry, Dose Equivalent, PS-TEPC
Abstract

第33回宇宙環境利用シンポジウム (2019年1月24日-25日. 宇宙航空研究開発機構宇宙科学研究所(JAXA)(ISAS)), 相模原市, 神奈川県, Space Utilization Research (January 24-25, 2019. Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency(JAXA)(ISAS)), Sagamihara, Kanagawa Japan, 著者人数: 18名, 資料番号: SA6000132013, レポート番号: G-12

Published
2019

8. Space dosimetry with a three-dimensional gas tracking detector

Author

Terasawa, Kazuhiro, Sasaki, Shin-ichi, Kishimoto, Yuji, Takahashi, Kazutoshi, Saito, Kiwamu, Tawara, Hiroko, Nagamatsu, Aiko, Katsuta, Masato, Masuda, Daisuke, Matsumoto, Haruhisa, Komiyama, Tatsuto, Fuse, Tetsuhito, Miuchi, Kentaro, Tanimori, Toru, Kubo, Hidetoshi, and Kitamura, Hisashi

Subjects
HIMAC, μ-PIC, TEPC, RRMD-III, LET, Space Dosimetry, Dose Equivalent, PS-TEPC
Abstract

第32回宇宙環境利用シンポジウム (2018年1月15日-16日. 宇宙航空研究開発機構宇宙科学研究所(JAXA)(ISAS)), 相模原市, 神奈川県, Space Utilization Research (January 15-16, 2018. Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency(JAXA)(ISAS)), Sagamihara, Kanagawa Japan, 著者人数: 16名, 資料番号: SA6000117018, レポート番号: G-13

Published
2018

9. Development of Position Sensitive Tissue Equivalent Proportional Chamber (PS-TEPC) as an active space dosimeter

Author

Terasawa, Kazuhiro, Sasaki, Shin-ichi, Kishimoto, Yuji, Takahashi, Kazutoshi, Saito, Kiwamu, Tawara, Hiroko, Nagamatsu, Aiko, Katsuta, Masato, Masuda, Daisuke, Matsumoto, Haruhisa, Komiyama, Tatsuto, Fuse, Tetsuhito, Miuchi, Kentaro, Tanimori, Toru, Kubo, Hidetoshi, and Kitamura, Hisashi

Subjects
HIMAC, μ-PIC, TEPC, RRMD-III, LET, Space Dosimetry, Dose Equivalent, PS-TEPC
Abstract

第31回宇宙環境利用シンポジウム (2017年1月16日-17日. 宇宙航空研究開発機構宇宙科学研究所(JAXA)(ISAS)), 相模原市, 神奈川県, Space Utilization Research (January 16-17, 2017. Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency(JAXA)(ISAS)), Sagamihara, Kanagawa Japan, 著者人数: 16名, 資料番号: SA6000061032, レポート番号: SUS31-G17

Published
2017

10. Development of Position Sensitive Tissue Equivalent Proportional Chamber (PS-TEPC) and establishment of a technique for space dosimetry on the International Space Station (2014RT report)

Author

Terasawa, Kazuhiro, Sasaki, Shin-ichi, Tawara, Hiroko, Saito, Kiwamu, Takahashi, Kazutoshi, Kishimoto, Yuji, Matsumoto, Haruhisa, Komiyama, Tatsuto, Nagamatsu, Aiko, Fuse, Tetsuhito, Ito, Yuichi, Katsuta, Masato, Miuchi, Kentaro, Tanimori, Toru, Kubo, Hidetoshi, Uchihori, Yukio, and Kitamura, Hisashi

Subjects
HIMAC, μ-PIC, TEPC, RRMD-III, LET, Space Dosimetry, Dose Equivalent, PS-TEPC
Abstract

第29回宇宙環境利用シンポジウム (2015年1月24日-25日. 宇宙航空研究開発機構宇宙科学研究所(JAXA)(ISAS)), 相模原市, 神奈川県, Space Utilization Research (January 24-25, 2015. Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency(JAXA)(ISAS)), Sagamihara, Kanagawa Japan, 著者人数: 17名, 資料番号: SA6000035026, レポート番号: ISAS-SUR29-S21

Published
2015

11. Development of an active space dosimeter PS-TEPC onboard the ISS

Author

Terasawa, Kazuhiro, Doke, Tadayoshi, Miuchi, Kentaro, Tanimori, Toru, Sasaki, Shinichi, Tawara, Hiroko, Saito, Kiwamu, Takahashi, Kazutoshi, Matsumoto, Haruhisa, Komiyama, Tatsuto, and Fuse, Tetsuhito

Abstract

第7回宇宙環境シンポジウム (2010年10月19日-20日. 東京国際フォーラム), 7th Spacecraft Enivironment Symposium (October 19-20, 2010, Tokyo International Forum), Tokyo Japan, 形態: カラー図版あり, 著者人数: 13人, Physical characteristics: Original contains color illustrations, 資料番号: AA0064933006, レポート番号: JAXA-SP-10-013

Published
2011

12. Calculation of radiation exposure on the moon surface by using PHITS

Author

Komiyama, Tatsuto and Matsumoto, Haruhisa

Abstract

The 5th Gerant4 Space Users' Workshop (University of Tokyo, 13-15 February 2008), Physical characteristics: Original contains color illustrations, 資料番号: AA0064304028, レポート番号: JAXA-SP-08-010E

Published
2009

13. In-situ space environment measurement of near earth and SEDA

Author

Goka, Tateo, Matsumoto, Haruhisa, Koga, Kiyokazu, Koshiishi, Hideki, Kimoto, Yugo, Sasaki, Yasutomo, and Komiyama, Tatsuto

Subjects
space radiation, spacecraft charging, geostationary orbit, 放射線帯, 宇宙機設計, 衛星搭載機器, 宇宙機帯電, aerospace environment, radiation belt, satellite-borne instrument, satellite observation, 宇宙放射, 航空宇宙環境, 衛星観測, 宇宙線, 静止軌道, cosmic ray, spacecraft design
Abstract

The current status of measuring radiation using JAXA satellites is reviewed. Starting with Engineering Test Satellite-5 (ETS-5; KIKU-5 in Japanese) in 1987, efforts to conduct radiation measurements in space have continued using almost all Japan Aerospace Exploration Agency (JAXA formerly NASDA) satellites (ETS-6 (Engineering Test Satellite-6: KIKU-6), ADEOS (ADvanced Earth Observing Satellite: Midori), ADEOS-2 (ADvanced Earth Observing Satellite-2: Midori-2), MDS-1 (Mission Demonstration test Satellite-1: Tsubasa), DRTS (Data Relay Test Satellite: KODAMA)(ongoing) and ETS-8 (Engineering Test Satellite-8: KIKU No.8)(ongoing), and ALOS (Advanced Land Observing Satellite: Daichi)(ongoing)), in Geostationary Orbit (GEO), Geostationary-Transfer Orbit (GTO), and Low-Earth Orbit (LEO). Electrons, protons, alpha particles, and heavy ions have been the main objects of study. Future plans for radiation monitoring in JAXA, including GOSAT (Greenhouse gases Observing SATellite), Jason-2 (in collaboration with CNES), and ISS (International Space Station)/JEM (Japanese Experiment Module)/Exposure Facility/SEDA-AP (Space Environment Data Acquisition equipment-Attached Payload), are presented., 資料番号: AA0063997004, レポート番号: JAXA-SP-07-030

Published
2008

14. Development of Position Sensitive Tissue Equivalent Proportional Chamber(PS-TEPC) for Space Dosimetry on board the International Space Station

Author

Terasawa, Kazuhiro, Sasaki, Shin-ichi, Tawara, Hiroko, Saito, Kiwamu, Takahashi, Kazutoshi, Kisimoto, Yuji, Matsumoto, Haruhisa, Komiyama, Tatsuto, Nagamatsu, Aiko, Fuse, Tetsuhito, Katsuta, Masato, Miuchi, Kentaro, Tanimori, Toru, Kubo, Hidetoshi, and Kitamura, Hisashi

Subjects
HIMAC, μ-PIC, TEPC, RRMD-III, LET, Space Dosimetry, Dose Equivalent, PS-TEPC
Abstract

第30回宇宙環境利用シンポジウム (2016年1月19日-20日. 宇宙航空研究開発機構宇宙科学研究所(JAXA)(ISAS)), 相模原市, 神奈川県, Space Utilization Research (January 19-20, 2016. Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency(JAXA)(ISAS)), Sagamihara, Kanagawa Japan, 著者人数: 15名, 資料番号: SA6000048009, レポート番号: G-05

Published
2016

15. Calculation of radiation exposure on the moon surface by using PHITS

Author

Komiyama, Tatsuto and Matsumoto, Haruhisa

Subjects
solar radiation, 放射線遮蔽, radiation exposure, 月探査, 2次中性子, 放射線輸送コード, secondary neutron, 有人月面基地, 数値シミュレーション, Monte Carlo method, lunar exploration, radiation transportation code, モンテカルロ法, computer program, numerical simulation, 太陽放射, 宇宙線, 計算機プログラム, 放射線被爆, manned lunar base, cosmic ray, radiation shielding
Abstract

JAXA published the 'JAXA Vision-JAXA 2025-' in March 2005, in which JAXA proposed to prepare for the establishment of a human lunar base. To follow the vision, JAXA started several studies. Recently, in order to contribute the studies, we calculated radiation exposure dose on the lunar surface by using a radiation transportation code, PHITS, developed by Koji Niita (Research organization for Information Science and Technology) et. al. As a result of the calculation, the effective dose equivalent under 10 g/sq cm shielding in the solar minimum condition is around 0.55 mSv/day and one in the solar flare worst day condition is around 70 mSv/day. On the other hand, the effective dose without shielding in the solar minimum condition is around 0.71 mSv/day and one in the solar flare worst day condition is around 4,000 mSv/day. This suggests that the shielding design and the radiation exposure management will be very important for the lunar base design., 資料番号: AA0049500034, レポート番号: JAXA-SP-06-006

Published
2006

16. 人体ファントムを利用した組織/臓器線量の測定および実効線量当量の評価

Author

Fujitaka, Kazunobu, Yasuda, Hiroshi, Komiyama, Tatsuto, Badhwar, Gautam D., 藤高 和信, 保田 浩志, 込山 立人, Fujitaka, Kazunobu, Yasuda, Hiroshi, Komiyama, Tatsuto, Badhwar, Gautam D., 藤高 和信, 保田 浩志, and 込山 立人

Abstract

Tissue/organ doses were measured and the effective dose equivalents were evaluated by using a body phantom in the 9th Shuttle/Mir Mission (STS (Space Transportation System)-91). The absorbed doses and the dose equivalents were measured at 59 locations in the phantom by the combination of Thermoluminescence Dosimeters of Mg2SiO4:Tb (TDMS) and Plastic Nuclear Track Dosimeters (PNTD). The case using Radiophotoluminescent Glass (RPLG) was also compared with the one using the TDMS. The values of the accumulated absorbed dose in the Mission for about 9.8 days were from 1.6 mGy in colon to 2.6 mGy in bone surface (shoulder), while the values of the dose equivalents calculated on the basis of ICRP-1990 (International Commission on Radiological Protection-1990) Recommendation were from 3.1 mSv in colon to 5.1 mSv in gonad. The values of the effective quality factor were in the range between 1.7 and 2.7. These variations with organ and tissue had a large factor of about 1.6. The large values of the dose equivalents were found in organs with relatively high radiation sensitivity such as lung, stomach, red bone marrow and gonad. The value of the effective dose equivalent was 4.1 mSv which was similar to the value at skin. These results bring up important problems in radiation protection and urge, in particular, the necessitated reexamination of personal dosimetry for space pilots., シャトル/ミールミッション9号機(STS(スペースシャトル輸送システム)-91)において、人体ファントムを用いた臓器/組織線量の測定および実効線量当量の評価を行った。吸収線量と線量当量は、ファントム59カ所において、Mg2SiO4:Tbの熱ルミネッセンス線量計(TDMS)およびプラスチック飛跡検出器(PNTD)の組み合わせにより測定した。ガラス線量計(RPLG)とTDMSとの比較も行った。約9.8日間のミッションにおける集積吸収線量は、結腸での1.6mGyから骨表面(肩)での2.6mGyまでの値をとり、ICRP(国際放射線防護委員会)-1990年勧告に基づいて計算した線量当量は、結腸での3.1mSvから生殖線での5.1mSvまでの値となった。実効線質係数値は1.7から2.7の範囲となった。これらの値に見られる臓器/組織による変動はファクタ約1.6と大きい。高い線量当量値は放射線感受性の比較的高い肺、胃、赤色骨髄、生殖線などの臓器で見られた。実効線量当量は4.1mSvとなり、皮膚における値とほぼ同程度になった。これらの結果は放射線防護上重要な問題を提起しており、特に宇宙飛行士の個人線量の測定方法に関して再検討を促すものである。

Published
2015

17. ISS船内における能動型・宇宙放射線線量計測器のPS-TEPC開発

Author

寺沢, 和洋, Terasawa, Kazuhiro, 道家, 忠義, Doke, Tadayoshi, 身内, 賢太郎, Miuchi, Kentaro, 谷森, 達, Tanimori, Toru, 佐々木, 慎一, Sasaki, Shinichi, 俵, 裕子, Tawara, Hiroko, 齋藤, 究, Saito, Kiwamu, 高橋, 一智, Takahashi, Kazutoshi, 松本, 晴久, Matsumoto, Haruhisa, 込山, 立人, Komiyama, Tatsuto, 布施, 哲人, Fuse, Tetsuhito, 寺沢, 和洋, Terasawa, Kazuhiro, 道家, 忠義, Doke, Tadayoshi, 身内, 賢太郎, Miuchi, Kentaro, 谷森, 達, Tanimori, Toru, 佐々木, 慎一, Sasaki, Shinichi, 俵, 裕子, Tawara, Hiroko, 齋藤, 究, Saito, Kiwamu, 高橋, 一智, Takahashi, Kazutoshi, 松本, 晴久, Matsumoto, Haruhisa, 込山, 立人, Komiyama, Tatsuto, 布施, 哲人, and Fuse, Tetsuhito

Abstract

形態: カラー図版あり, 会議情報: 第7回宇宙環境シンポジウム (2010年10月19日-20日. 東京国際フォーラム), 著者人数: 13人, Original contains color illustrations, Meeting Information: 7th Spacecraft Enivironment Symposium (October 19-20, 2010, Tokyo International Forum), Tokyo Japan

Published
2015

18. Calculation of radiation exposure on the moon surface by using PHITS

Author

込山, 立人, Komiyama, Tatsuto, 松本, 晴久, Matsumoto, Haruhisa, 込山, 立人, Komiyama, Tatsuto, 松本, 晴久, and Matsumoto, Haruhisa

Abstract

Original contains color illustrations, Meeting Information: The 5th Gerant4 Space Users' Workshop (University of Tokyo, 13-15 February 2008)

Published
2015

19. Development of Position Sensitive Tissue Equivalent Proportional Counter (PS-TEPC)and establishment of a technique for space dosimetry on the International Space Station: 2009 WG report

Author

Terasawa, Kazuhiro, Doke, Tadayoshi, Sasaki, Shinichi, Tawara, Hiroko, Saito, Kiwamu, Takahashi, Kazutoshi, Miuchi, Kentaro, Kubo, Hidetoshi, Tanimori, Toru, Matsumoto, Haruhisa, Komiyama, Tatsuto, Higashio, Nana, Uchihori, Yukio, and Kitamura, Hisashi

Subjects
Space Dosimetry, Dose Equivalent, LET, PS-TEPC, micro-PIC, TEPC, RRMD-III, HIMAC
Abstract

第26回宇宙利用シンポジウム(2010年1月25日-26日, 宇宙航空研究開発機構宇宙科学研究本部相模原キャンパス), The Twenty-sixth Space Utilization Symposium (January 25-26, 2010: ISAS/JAXA Sagamihara, Japan), Position Sensitive Tissue Equivalent Proportional Counter (PS-TEPC) has been developed for space dosimetry. An experiment by Iron beams with the energy of 500 MeV/n was performed at the HIMAC of the NIRS to understand the response of the detector. The energy resolution of 9.9 % (FWHM) was obtained for the energy deposited in the detector., 形態: カラー図版あり, 共催: 日本学術会議, 著者人数: 14人, Physical characteristics: Original contains color illustrations, joint hosting: The Science Council of Japan, 資料番号: AA0064730086

Published
2010

20. Development of Position Sensitive Tissue Equivalent Proportional Counter (PS-TEPC) for space dosimetry

Author

Terasawa, Kazuhiro, Doke, Tadayoshi, Sasaki, Shinichi, Tawara, Hiroko, Saito, Kiwamu, Nagayoshi, Tsutomu, Fujita, Yasunobu, Takeuchi, Koji, Kikuchi, Jun, Miuchi, Kentaro, Nishimura, Hironobu, Kubo, Hidetoshi, Tanimori, Toru, Matsumoto, Haruhisa, Komiyama, Tatsuto, Uchihori, Yukio, and Kitamura, Hisashi

Subjects
Space Dosimetry, Dose Equivalent, LET, PS-TEPC, mu-PIC, TEPC, RRMD-III, HIMAC
Abstract

第25回宇宙利用シンポジウム(2009年1月14日-15日, 宇宙航空研究開発機構宇宙科学研究本部相模原キャンパス), The Twenty-fifth Space Utilization Symposium (January 14-15, 2009: ISAS/JAXA Sagamihara, Japan), Position Sensitive Tissue Equivalent Proportional Counter (PS-TEPC) has been developed for space dosimetry. An experiment with proton beams were performed at the cyclotron of NIRS to understand the response to protons as well as heavy ions such as He, C, Si, Ar and Fe ions. We successfully obtained the three-dimensional tracks and the charge distributions given by protons., 形態: カラー図版あり, 資料番号: AA0064297021

Published
2009

21. Space Dosimetry with a Position Sensitive Tissue Equivalent Proportional Counter (II)

Author

Terasawa, Kazuhiro, Doke, Tadayoshi, Nagayoshi, Tsutomu, Fujita, Yasunobu, Miuchi, Kentaro, Takada, Atsushi, Nishimura, Hironobu, Sasaki, Shinichi, Tawara, Hiroko, Matsumoto, Haruhisa, Komiyama, Tatsuto, and Uchihori, Yukio

Subjects
Space Dosimetry, Dose Equivalent, PS-TEPC, mu-PIC
Abstract

第22回宇宙利用シンポジウム(2006年1月17日-19日, 日本学術会議6階会議室 六本木、東京), The Twenty-second Space Utilization Symposium (January 17-19, 2006: Science Council of Japan, Roppongi, Tokyo, Japan), We started to develop a new space dosimeter named "Position Sensitive Tissue Equivalent Proportional Counter (PS-TEPC) ". This detector is expected to have good properties of existing dosimeters such as TEPC by NASA and Real-time Radiation Monitoring Device-III (RRMD-III) based on Si telescopes. A novel technique named "Micro PIxel Chamber" (mu-PIC) makes it feasible. Heavy ions irradiation experiments were performed in HIMAC using the detector with the sensitive volume of 100 x 100 x 100 mm3. The energy distributions measured by the detector were consistent with the theoretical calculation., 形態: カラー図版あり, 共催: 日本学術会議, 著者人数: 12人, Physical characteristics: Original contains color illustrations, Meeting sponsors: The Science Council of Japan, The Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (ISAS)(JAXA), 資料番号: AA0064113105

Published
2006

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