Study of the physics of the extraction and optics of the negative ion beam in a negative ion source
Project/Area Number |
26400533
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Research Category |
Grant-in-Aid for Scientific Research (C)
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Allocation Type | Multi-year Fund |
Section | 一般 |
Research Field |
Plasma science
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Research Institution | Naruto University of Education |
Principal Investigator |
KENJI MIYAMOTO 鳴門教育大学, 大学院学校教育研究科, 准教授 (00532996)
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Co-Investigator(Renkei-kenkyūsha) |
HATAYAMA Akiyoshi 慶応義塾大学, 理工学部, 教授 (10245607)
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Project Period (FY) |
2014-04-01 – 2017-03-31
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Project Status |
Completed (Fiscal Year 2016)
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Budget Amount *help |
¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Fiscal Year 2016: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2015: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2014: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
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Keywords | プラズマ / 核融合 / 負イオン源 / 加速器 / シミュレーション / イオンビーム光学 / PIC法 |
Outline of Final Research Achievements |
The physics of the extraction and optics of the negative ion beam, especially the beam halo formation was studied by using the 3D PIC (particle in cell) simulation combined with a Monte Carlo calculation. It is shown that the beam halo consists of the negative ions extracted from the periphery of the plasma meniscus. Since the curvature of the equipotential surface is large in the periphery of the plasma meniscus, these negative ions are over-focused and then divergent.
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Report
(4 results)
Research Products
(25 results)
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[Presentation] 2.Long-pulse acceleration of 1MeV negative ion beams toward ITER and JT-60SA neutral beam injectors2016
Author(s)
J. Hiratsuka, A. Kojima, N. Umeda, M. Hanada, M. Kashiwagi, M. Yoshida, R. Nishikiori, M. Ichikawa, K. Watanabe, H. Tobari, M. Dairaku, H. Yamanaka, H. Abe, R. Kawamata, N. Shibata, T. Maejima, Y. Terunuma, Y. Oda, N. Akino, K. Mogaki, S. Sasaki, N. Seki, S. Nemoto, T. Shimizu, Y. Endo, K. Miyamoto, et al.
Organizer
26th IAEA Fusion Energy Conference
Place of Presentation
Kyoto, Japan
Related Report
Int'l Joint Research
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[Presentation] Measurement of heat load density profile on acceleration grid in MeV-class negative ion accelerator2015
Author(s)
Junichi Hiratsuka, Masaya Hanada, Atsushi Kojima, Naotaka Umeda, Mieko Kashiwagi, Kenji Miyamoto, Masafumi Yoshida, Ryo Nishikiori, Masahiro Ichikawa, Kazuhiro Watanabe and Hiroyuki Tobari
Organizer
The 16th International Conference on Ion Sources
Place of Presentation
Marriott Marquis, New York City, USA
Year and Date
2015-08-27
Related Report
Int'l Joint Research
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