Radiation-driven m=2 island formation and dynamics near density limit in experimental advanced superconducting tokamak ohmic plasma
Radiation-driven m=2 island formation and dynamics near density limit in experimental advanced superconducting tokamak ohmic plasma
复制标题
实验先进超导托卡马克欧姆等离子体中辐射驱动的 m=2 岛形成和接近密度极限的动力学
DOI：
10.1088/1741-4326/aa7f91
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发表时间：
2017
期刊：
影响因子：
3.3
通讯作者：
Hu LQ
中科院分区：
文献类型：
--
作者：
Xu Liqing;Duan Yanmin;Chen Kaiyun;Zhao Hailin;Luo Zhenping;Zheng Zhen;Liu Yong;Liu Haiqing;Chen Yingjie;Yi Yuan;Hu Liqun;Du Hongfei;Shi Tonghui;Hu LQ
在实验先进超导托卡马克（EAST）欧姆等离子体中观察到一个接近密度极限的辐射驱动m= 2岛。当欧姆加热输入小于辐射冷却损失时，模态开始发生，这与热阻模型的模态开始行为一致。使用ONETWO输运代码，输入包括实验电子温度和密度分布，获得了模态过程中平衡的演化。一个大的m= 2岛可以驱动m= 1边带模式，这导致内部崩溃，表现为不仅发生在q= 2区域，而且发生在核心的温度的大变化。
A radiation-driven m= 2 island was observed in the experimental advanced superconducting tokamak (EAST) ohmic plasma, near the density limit. The mode onset occurs when the the ohmic heating input is less than the radiative cooling loss, which agrees with the mode onset behavior of the thermo-resistive model. The evolution of the equilibrium during the mode process was obtained using the ONETWO transport code, with inputs comprising the experimental electron temperature and density profiles. A large m= 2 island can drive an m= 1 sideband mode, which leads to an internal crash that appears as a large change in temperature that occurs not only in the q= 2 region but also in the core.