First Plasma Experiment of Electron Cyclotron Resonance Heating by Optical Vortex Beam in Heliotron J

Zongyuhui HE; Kazunobu NAGASAKI; Toru TSUJIMURA; Yasuhisa ODA; Shinji KOBAYASHI; Shigeru INAGAKI; Shinichiro KADO; Fumiyoshi KIN; Shinichiro INAGAKI; Shigeru KONOSHIMA; Tohru MIZUUCHI; Naoki KENMOCHI

doi:10.1585/pfr.21.1202034

Rapid Communications

First Plasma Experiment of Electron Cyclotron Resonance Heating by Optical Vortex Beam in Heliotron J

Zongyuhui HE, Kazunobu NAGASAKI, Toru TSUJIMURA, Yasuhisa ODA, Shinji KOBAYASHI, Shigeru INAGAKI, Shinichiro KADO, Fumiyoshi KIN, Shinichiro INAGAKI, Shigeru KONOSHIMA, Tohru MIZUUCHI, Naoki KENMOCHI

著者情報

キーワード: electron cyclotron resonance heating, optical vortex beam, Heliotron J

ジャーナルフリー HTML

2026 年 21 巻論文ID: 1202034

DOI https://doi.org/10.1585/pfr.21.1202034

詳細

抄録

Plasma experiments on electron cyclotron resonance heating (ECRH) using a high-power optical vortex beam (OVB) have been demonstrated for the first time in the Heliotron J stellarator/heliotron device. The OVB is generated by a spiral phase plate in a 70 GHz ECRH system. Plasmas are successfully sustained up to the second harmonic extraordinary (X) mode cut-off density. Virtually identical performance in terms of stored energy and density limits confirms the injection of the OVB as a heating tool comparable to Gaussian beams. These first results showed that the OVB is a possible method for the research on wave and plasma physics in magnetically confined fusion systems.

責任著者(Corresponding author)

J-STAGEへの登録はこちら（無料）