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Two beneficial non-axisymmetric perturbations to tokamaks

Allen H Boozer2011年Plasma Physics and Controlled FusionIF 2.2出版社

Non-axisymmetric external magnetic fields are the primary control available for fusion-grade tokamaks. The use of two beneficial magnetic perturbations is discussed: (1) an external non-axisymmetric field to enhance the stability of the tokamak to neoclassical tearing modes, which when unstable can lead to a disruption. (2) A current induced in the first wall during a plasma disruption to have a fail-safe prevention of high-energy runaway electrons, which can heavily damage a fusion-scale tokamak.

日本語訳

非軸対称外部磁場は、核融合グレードのトカマクにおいて利用可能な主要な制御手段である。2つの有益な磁場摂動の利用について論じる:(1) 新古典テアリングモードに対するトカマクの安定性を向上させる外部非軸対称磁場。このモードは不安定化するとディスラプションを引き起こす可能性がある。(2) プラズマディスラプション中に第一壁に誘起される電流。これは、核融合規模のトカマクに深刻な損傷を与え得る高エネルギー runaway 電子のフェイルセーフ防止策として機能する。

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