Response of beam focusing to plasma fluctuation in a filament-arc-type negative ion source

Y. Haba; K. Nagaoka; K. Tsumori; M. Kisaki; K. Takahashi; H. Nakano; K. Ikeda; S. Yoshimura; M. Osakabe

doi:10.35848/1347-4065/ab7473

Response of beam focusing to plasma fluctuation in a filament-arc-type negative ion source

Y. Haba, K. Nagaoka, K. Tsumori, M. Kisaki, K. Takahashi, H. Nakano, K. Ikeda, S. Yoshimura, M. Osakabe

ENG - Electrical Engineering

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

6 Citations (Scopus)

Abstract

Beam focusing is one of the most important elements for the stable and safe operation of high power negative ion beams, such as neutral beam injection into magnetically confined fusion plasmas. In order to investigate impacts of the source plasma fluctuation on beam focusing, a simultaneous measurement of the source plasma fluctuation and the beam current profile has been carried out in the research-and-development negative ion source at the National Institute for Fusion Science. The responses of beam width and of the beam centre deviation are observed for the first time, indicating the importance of the source plasma stability for the negative ion beam focusing.

Original language	English
Article number	SHHA01
Journal	Japanese journal of applied physics
Volume	59
Issue number	SH
DOIs	https://doi.org/10.35848/1347-4065/ab7473
Publication status	Published - 2020 May 1

ASJC Scopus subject areas

Engineering(all)
Physics and Astronomy(all)

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title = "Response of beam focusing to plasma fluctuation in a filament-arc-type negative ion source",

abstract = "Beam focusing is one of the most important elements for the stable and safe operation of high power negative ion beams, such as neutral beam injection into magnetically confined fusion plasmas. In order to investigate impacts of the source plasma fluctuation on beam focusing, a simultaneous measurement of the source plasma fluctuation and the beam current profile has been carried out in the research-and-development negative ion source at the National Institute for Fusion Science. The responses of beam width and of the beam centre deviation are observed for the first time, indicating the importance of the source plasma stability for the negative ion beam focusing.",

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AU - Haba, Y.

AU - Nagaoka, K.

AU - Tsumori, K.

AU - Kisaki, M.

AU - Takahashi, K.

AU - Nakano, H.

AU - Ikeda, K.

AU - Yoshimura, S.

AU - Osakabe, M.

PY - 2020/5/1

Y1 - 2020/5/1

N2 - Beam focusing is one of the most important elements for the stable and safe operation of high power negative ion beams, such as neutral beam injection into magnetically confined fusion plasmas. In order to investigate impacts of the source plasma fluctuation on beam focusing, a simultaneous measurement of the source plasma fluctuation and the beam current profile has been carried out in the research-and-development negative ion source at the National Institute for Fusion Science. The responses of beam width and of the beam centre deviation are observed for the first time, indicating the importance of the source plasma stability for the negative ion beam focusing.

AB - Beam focusing is one of the most important elements for the stable and safe operation of high power negative ion beams, such as neutral beam injection into magnetically confined fusion plasmas. In order to investigate impacts of the source plasma fluctuation on beam focusing, a simultaneous measurement of the source plasma fluctuation and the beam current profile has been carried out in the research-and-development negative ion source at the National Institute for Fusion Science. The responses of beam width and of the beam centre deviation are observed for the first time, indicating the importance of the source plasma stability for the negative ion beam focusing.

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Response of beam focusing to plasma fluctuation in a filament-arc-type negative ion source

Abstract

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