22 A beam production of the uniform negative ions in the JT-60 negative ion source

Masafumi Yoshida; Masaya Hanada; Atsushi Kojima; Mieko Kashiwagi; Larry R. Grisham; Akiyoshi Hatayama; Takanori Shibata; Takashi Yamamoto; Noboru Akino; Yasuei Endo; Masao Komata; Kazuhiko Mogaki; Shuji Nemoto; Masahiro Ohzeki; Norikazu Seki; Shunichi Sasaki; Tatsuo Shimizu; Yuto Terunuma

doi:10.1016/j.fusengdes.2015.06.152

22 A beam production of the uniform negative ions in the JT-60 negative ion source

Masafumi Yoshida, Masaya Hanada, Atsushi Kojima, Mieko Kashiwagi, Larry R. Grisham, Akiyoshi Hatayama, Takanori Shibata, Takashi Yamamoto, Noboru Akino, Yasuei Endo, Masao Komata, Kazuhiko Mogaki, Shuji Nemoto, Masahiro Ohzeki, Norikazu Seki, Shunichi Sasaki, Tatsuo Shimizu, Yuto Terunuma

Research output: Contribution to journal › Article › peer-review

12 Citations (Scopus)

Abstract

In order to improve the spatial uniformity of the negative ion beam and to produce high current negative ion beams in a large negative ion source, a magnetic field configuration is modified from an original transverse filter to a tent-shaped filter, in combination with reducing the magnetic field strength in the JT-60 negative ion source. As a result, the beam uniformity is improved from 68% to 83% over an area of the whole extraction area of 450 × 1100 mm<sup>2</sup>. The improvement of the beam uniformity leads to the production of 32 A H<sup>-</sup> ion beams with the whole extraction area. The obtained beam current fulfills the requirement for JT-60SA.

Original language	English
Pages (from-to)	616-619
Number of pages	4
Journal	Fusion Engineering and Design
Volume	96-97
DOIs	https://doi.org/10.1016/j.fusengdes.2015.06.152
Publication status	Published - 2015 Oct 1

Keywords

JT-60SA
Magnetic filter
NBI
Negative ion beams

ASJC Scopus subject areas

Nuclear Energy and Engineering
Materials Science(all)
Civil and Structural Engineering
Mechanical Engineering

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10.1016/j.fusengdes.2015.06.152

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Yoshida, M., Hanada, M., Kojima, A., Kashiwagi, M., Grisham, L. R., Hatayama, A., Shibata, T., Yamamoto, T., Akino, N., Endo, Y., Komata, M., Mogaki, K., Nemoto, S., Ohzeki, M., Seki, N., Sasaki, S., Shimizu, T., & Terunuma, Y. (2015). 22 A beam production of the uniform negative ions in the JT-60 negative ion source. Fusion Engineering and Design, 96-97, 616-619. https://doi.org/10.1016/j.fusengdes.2015.06.152

Yoshida, M, Hanada, M, Kojima, A, Kashiwagi, M, Grisham, LR, Hatayama, A, Shibata, T, Yamamoto, T, Akino, N, Endo, Y, Komata, M, Mogaki, K, Nemoto, S, Ohzeki, M, Seki, N, Sasaki, S, Shimizu, T & Terunuma, Y 2015, '22 A beam production of the uniform negative ions in the JT-60 negative ion source', Fusion Engineering and Design, vol. 96-97, pp. 616-619. https://doi.org/10.1016/j.fusengdes.2015.06.152

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title = "22 A beam production of the uniform negative ions in the JT-60 negative ion source",

abstract = "In order to improve the spatial uniformity of the negative ion beam and to produce high current negative ion beams in a large negative ion source, a magnetic field configuration is modified from an original transverse filter to a tent-shaped filter, in combination with reducing the magnetic field strength in the JT-60 negative ion source. As a result, the beam uniformity is improved from 68% to 83% over an area of the whole extraction area of 450 × 1100 mm2. The improvement of the beam uniformity leads to the production of 32 A H- ion beams with the whole extraction area. The obtained beam current fulfills the requirement for JT-60SA.",

keywords = "JT-60SA, Magnetic filter, NBI, Negative ion beams",

author = "Masafumi Yoshida and Masaya Hanada and Atsushi Kojima and Mieko Kashiwagi and Grisham, {Larry R.} and Akiyoshi Hatayama and Takanori Shibata and Takashi Yamamoto and Noboru Akino and Yasuei Endo and Masao Komata and Kazuhiko Mogaki and Shuji Nemoto and Masahiro Ohzeki and Norikazu Seki and Shunichi Sasaki and Tatsuo Shimizu and Yuto Terunuma",

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doi = "10.1016/j.fusengdes.2015.06.152",

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T1 - 22 A beam production of the uniform negative ions in the JT-60 negative ion source

AU - Yoshida, Masafumi

AU - Hanada, Masaya

AU - Kojima, Atsushi

AU - Kashiwagi, Mieko

AU - Grisham, Larry R.

AU - Hatayama, Akiyoshi

AU - Shibata, Takanori

AU - Yamamoto, Takashi

AU - Akino, Noboru

AU - Endo, Yasuei

AU - Komata, Masao

AU - Mogaki, Kazuhiko

AU - Nemoto, Shuji

AU - Ohzeki, Masahiro

AU - Seki, Norikazu

AU - Sasaki, Shunichi

AU - Shimizu, Tatsuo

AU - Terunuma, Yuto

PY - 2015/10/1

Y1 - 2015/10/1

N2 - In order to improve the spatial uniformity of the negative ion beam and to produce high current negative ion beams in a large negative ion source, a magnetic field configuration is modified from an original transverse filter to a tent-shaped filter, in combination with reducing the magnetic field strength in the JT-60 negative ion source. As a result, the beam uniformity is improved from 68% to 83% over an area of the whole extraction area of 450 × 1100 mm2. The improvement of the beam uniformity leads to the production of 32 A H- ion beams with the whole extraction area. The obtained beam current fulfills the requirement for JT-60SA.

AB - In order to improve the spatial uniformity of the negative ion beam and to produce high current negative ion beams in a large negative ion source, a magnetic field configuration is modified from an original transverse filter to a tent-shaped filter, in combination with reducing the magnetic field strength in the JT-60 negative ion source. As a result, the beam uniformity is improved from 68% to 83% over an area of the whole extraction area of 450 × 1100 mm2. The improvement of the beam uniformity leads to the production of 32 A H- ion beams with the whole extraction area. The obtained beam current fulfills the requirement for JT-60SA.

KW - JT-60SA

KW - Magnetic filter

KW - NBI

KW - Negative ion beams

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SN - 0920-3796

VL - 96-97

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EP - 619

JO - Fusion Engineering and Design

JF - Fusion Engineering and Design

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22 A beam production of the uniform negative ions in the JT-60 negative ion source

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