2019年
Code Development for Calculating Electron Beams in the Cavities of the Future High-Power Gyrotrons
Plasma and Fusion Research
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- 巻
- 14
- 号
- 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>
- ID情報
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- DOI : 10.1585/pfr.14.2405052
- ISSN : 1880-6821