論文

2019年

Code Development for Calculating Electron Beams in the Cavities of the Future High-Power Gyrotrons

Plasma and Fusion Research
  • NUMAKURA, Tomoharu
  • ,
  • KARIYA, Tsuyoshi
  • ,
  • MINAMI, Ryutaro
  • ,
  • OKADA, Maki
  • ,
  • HOJO, Toshitaka
  • ,
  • MOTOYOSHI, Fumiya
  • ,
  • IMAI, Tsuyoshi

14
開始ページ
2405052
終了ページ
2405052
記述言語
日本語
掲載種別
研究論文(学術雑誌)
DOI
10.1585/pfr.14.2405052
出版者・発行元
社団法人 プラズマ・核融合学会

<p>This study develops a computational code for evaluating the operations of high-power gyrotrons with high-current electron beams. The analytical model describes the electromagnetic fields and electrons by the Maxwell equations and cold-fluid equations, respectively. Specifically, it estimates the output power of the gyrotron with electron-beam fluctuations, which occur under high beam currents. The effects of fluctuations of the intense electron flows in nonuniform magnetic fields are studied in a 1 MW gyrotron for electron cyclotron resonance plasma heating and current drive in large devices, such as the tandem mirror plasma device GAMMA10/PDX and the Large Helical Device (LHD). The rate of fluctuation growth of the electron beam and the output power of the high-power gyrotron with a fluctuated beam are calculated. In gyrotrons with a higher operating frequency (e.g., 154 GHz), significant deterioration of the electron beam and gyrotron operation is expected at beam currents exceeding 120 A.</p>

リンク情報
DOI
https://doi.org/10.1585/pfr.14.2405052
ID情報
  • DOI : 10.1585/pfr.14.2405052
  • ISSN : 1880-6821

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