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Formation of the non-axisymmetric helical current driven by a biased electrode in the scrape-off layer on J-TEXT
发布时间：2019-12-06
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论文类型：期刊论文
第一作者：Nengchao Wang
通讯作者：Y. Liang
发表刊物：Nuclear Fusion
收录刊物：SCI
卷号：59
期号：9
页面范围：096047
DOI码：10.1088/1741-4326/ab2d03
发表时间：2019-08-06
摘要：Resonant magnetic perturbations (RMPs), which change the magnetic topology, have been applied to control the edge-localized modes (ELMs) in many tokamak experiments. The nonaxisymmetric helical currents induced by lower hybrid waves in the scrape-off layer (SOL) were observed to impact the magnetic topology profoundly and mitigated ELMs strongly in EAST (Liang et al 2013 Phys. Rev. Lett. 110 235002). In this paper, we present electrode biasing in the SOL as an alternative method to drive the non-axisymmetric helical currents in J-TEXT. A significant SOL current (e.g. ~150 A) was induced throug