LHDにおける協同イオントムソン散乱の為のSub-THz帯大電力パルスジャイロトロン開発

Material type: 文書・図像類

Author: 野竹, 孝志ほか

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Publication date: 2008-09

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Note (General)：: Collective Thomson scattering (CTS) is expected to provide the spatially resolved velocity distribution functions of not only thermal and tail ions bu...

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Material Type: 文書・図像類
Title: LHDにおける協同イオントムソン散乱の為のSub-THz帯大電力パルスジャイロトロン開発
Author/Editor: 野竹, 孝志
斉藤, 輝雄
立松, 芳典
LA, AGUSU
村瀬, 浩規
藤井, 彰仁
久保, 伸
下妻, 隆
田中, 謙治
西浦, 正樹
小川, 勇
出原, 敏孝
Author Heading: 野竹, 孝志
斉藤, 輝雄
立松, 芳典
LA, AGUSU
村瀬, 浩規
藤井, 彰仁
久保, 伸
下妻, 隆
田中, 謙治
西浦, 正樹
小川, 勇
出原, 敏孝
Publication Date: 2008-09
Publication Date (W3CDTF): 2008-09
Alternative Title: Developments of Sub-THz High-Power Pulse Gyrotrons for Collective Ion Thomson Scattering in LHD
Periodical title: 遠赤外領域開発研究
No. or year of volume/issue: 9
Volume: 9
Pages: 105-118
Text Language Code: jpn
Target Audience: 一般
Note (General): Collective Thomson scattering (CTS) is expected to provide the spatially resolved velocity distribution functions of not only thermal and tail ions but also alpha particles resulting from D-T fusion reactions. To date,CTS has not been fully utilized because of the difficulties in achieving sufficient single-to-noise ratios and appropriate scattering angles. The use of gyrotrons with frequency higher than the conventional ones may overcome these difficulties and avoid cut-off and refraction effects even in the high-density plasmas. Therefore,a high-power pulse gyrotron operating at approximately 400 GHz is being developed for CTS in large helical device. A single mode oscillation with a frequency greater than 400 GHz,applying the second harmonic resonance,was successfully demonstrated in the first stage. Achieving the single mode oscillation at higher power levels by improving the cavity,electron gun,and power supply system is under study for the next step.
Access Restrictions: 限定公開
Data Provider (Database): 国立情報学研究所 : 学術機関リポジトリデータベース（IRDB）（機関リポジトリ）
https://irdb.nii.ac.jp
Original Data Provider (Database): 福井大学 : 福井大学学術機関リポジトリ