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An ICRF antenna for the next step tokamak operating in a wide frequency band

V.P. Bhatnagar, J. Jacquinot1994年被引用 4Nuclear FusionIF 3出版社

The flexibility provided by a variety of ion cyclotron resonance heating (ICRH) and current drive (CD) scenarios for ITER requires that the antenna should operate at a number of frequencies spread over a wide frequency range (20-85 MHz). A short circuited strip-line antenna in which a long strap is connected in parallel with a very short section is shown to provide the frequency range of operation required for ITER. The short section acts as a matching element located within the antenna and improves the power coupling capability especially at low frequencies where the plasma coupling is generally poor. The short section also supports the feeder-line central conductor. This means there is no longer a need for a ceramic support in the immediate vicinity of the antenna that will be subjected to a harsh neutron environment in a reactor

日本語訳

種々のイオンサイクロトロン共鳴加熱(ICRH)および電流駆動(CD)シナリオによってITERに提供される柔軟性は、アンテナが広い周波数範囲(20〜85 MHz)にわたって分散した多数の周波数で動作することを要求する。長いストラップが非常に短い区間と並列に接続された短絡ストリップ線路アンテナは、ITERに要求される動作周波数範囲を提供することが示されている。短い区間はアンテナ内部に配置された整合素子として機能し、特にプラズマ結合が一般に乏しい低周波数において電力結合能力を向上させる。短い区間はまた、給電線の中心導体を支持する。これは、炉内の過酷な中性子環境に曝されるアンテナの直近にセラミック支持体を設ける必要がもはやないことを意味する。

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Ion cyclotron heatingSTEPIon cyclotron antenna
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