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Oscillation Characteristics of a High Power 300 GHz Band Pulsed Gyrotron for Use in Collective Thomson Scattering Diagnostics
http://hdl.handle.net/10655/00013241
http://hdl.handle.net/10655/000132413aa45d54-cb31-49b7-8f60-0d1f3dae3d5a
名前 / ファイル | ライセンス | アクション |
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12001_PFR (1.7 MB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2022-06-17 | |||||
タイトル | ||||||
タイトル | Oscillation Characteristics of a High Power 300 GHz Band Pulsed Gyrotron for Use in Collective Thomson Scattering Diagnostics | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Sub-THz gyrotron | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | whispering gallery mode | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | single-mode oscillation | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | collective Thomson scattering | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | LHD | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | journal article | |||||
著者 |
SAITO, Teruo
× SAITO, Teruo× TANAKA, Shunsuke× SHINBAYASHI, Ryuji× TATEMATSU, Yoshinori× YAMAGUCHI, Yuusuke× FUKUNARI, Masafumi× KUBO, Shin× SHIMOZUMA, Takashi× TANAKA, Kenji× NISHIURA, Masaki |
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著者ID | ||||||
内容記述タイプ | Other | |||||
内容記述 | 0000-0003-3269-517X | |||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | A high power sub-THz pulsed gyrotron with a frequency of 303 GHz has been developed for use as the power source of the collective Thomson scattering (CTS) diagnostics in the Large Helical Device (LHD) at the National Institute for Fusion Science. Based on careful design considerations, a whispering gallery mode TE22,2 was adopted to avoid mode competition. More than 320 kW was attained with single-mode oscillation. The spectrum of the oscillation frequency is very narrow and stable during the entire pulse duration for pulse widths up to 100 μs. No parasitic mode is excited at the turn-on and turn-off phases nor during the steady state of the oscillation pulse. In addition to the adoption of the whispering gallery mode, a fast but finite rise time of the beam voltage is an important role for the realization of single-mode oscillation. Self-consistent calculations show that, for the finite voltage rise time corresponding to the present experiment, gradual evolution to the high power regime is attained from backward wave oscillation. This high power regime corresponds to the hard self-excitation region in the case of instantaneous voltage rise. | |||||
書誌情報 |
Plasma and Fusion Research 巻 14, p. 1406104, 発行日 2019-06-19 |
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出版者 | ||||||
出版者 | The Japan Society of Plasma Science and Nuclear Fusion Research | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 1880-6821 | |||||
書誌レコードID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA12346675 | |||||
DOI | ||||||
関連タイプ | isIdenticalTo | |||||
識別子タイプ | DOI | |||||
関連識別子 | 10.1585/pfr.14.1406104 | |||||
権利 | ||||||
権利情報 | (c) 2019 The Japan Society of Plasma Science and Nuclear Fusion Research | |||||
関連サイト | ||||||
識別子タイプ | DOI | |||||
関連識別子 | https://doi.org/10.1585/pfr.14.1406104 | |||||
関連名称 | Publisher version | |||||
著者版フラグ | ||||||
出版タイプ | VoR | |||||
出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||
NAIS | ||||||
12001 |