Observation of heat flux and plasma flow in scrapr off layer in QUEST
Observation of heat flux and plasma flow in scrapr off layer in QUEST
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QUEST 中刮除层热通量和等离子体流的观测
DOI：
10.1016/j.jnucmat.2014.11.136
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发表时间：
2015
影响因子：
3.1
通讯作者：
A. Higashijima
中科院分区：
文献类型：
--
作者：
T. Onchi;Y. Mahira;K. Nagaoka;S. Tashima;S. Banerjee;K. Mishra;H. Idei;K. Hanada;K. Nakamura;A. Fujisawa;Y. Nagashima;M.Hasegawa;K. Matsuoka;A. Kuzmin;O. Watanabe;S. Kawasaki;H. Nakashima;A. Higashijima
研制了具有热电偶和Langmuir探针双重功能的热探针，并在QUEST中获得了远溶胶的初始观测数据。在当前的升压阶段，虽然没有施加像欧姆绕组这样的高功率感应力，但已经观察到与远场高能电子和声波等离子体流相关的每平方米兆瓦的热流。在电流建立后，热流和流量被抑制。在准稳态下，等离子体电流启动并保持锯齿状振荡，振荡频率为20hz。热通量和远场流对振荡有明显的响应。
Thermal probe with double function of thermocouples and Langmuir probe has been developed, and the initial data observed in far-SOL in QUEST is obtained. Heat flux of megawatt per square meters related to energetic electrons and sonic plasma flow in far-SOL have been observed in the current rump-up phase although no high power inductive force like ohmic winding is applied. The heat flux and the flow are suppressed after the current is built up. In the quasi-steady state, plasma current starts and keeps sawtooth-like oscillation with 20 Hz frequency. The heat flux and the flow in far-SOL have clear responses to the oscillation.