时 间： 2016年04月26日（周二） 14:30

地 点： 三楼会议室313

报告人1： 黄名响（HUST）

题 目1： Phenomenology of disruptions on J-TEXT tokamak

摘要：

The characteristic of minor and major disruptions is studied on J-TEXT tokamak, which happen during lock-mode disruptions and density limit disruptions. In the lock-mode experiments, frequent minor disruptions, characterized with fast heat crash and density pump-out but without plasma current crash, are triggered after mode locking or field penetration by static m/n = 2/1 resonant magnetic perturbations (RMPs), where m and n are the poloidal and toroidal mode numbers, respectively. For minor disruption, it is found that the temperature decreases within the 2/1 rational surface and increases outside of that surface in a time scale of 1-2 ms. Later on, the locked mode as well as the temperature and density begin to recover until its initial state, then the next minor disruption occurs again. Further analysis shows that the excitation of minor disruption is possibly caused by the coupling of 2/1 locked mode with other mode (such as 1/1 and 3/2 modes), and this kind of modes coupling may even lead to the occurrence of major disruption. And just before the density limit disruptions, minor disruptions are likely to happen, and modes coupling may lead to the major disruptions. In addition, even the modes coupling happens, if, for example, the confinement improves, the 2/1 mode (and 3/2 mode) will be suppressed, and the (minor and major) disruption would not happen.

报告人2： 何济洋（HUST）

题 目2： The brief introduction of the first alfven wave antenna in J-TEXT

欢迎各位老师同学参与学习讨论！