J-TEXT 学术报告第57期

时 间： 2016年11月9日（周三） 8:30

地 点： 二楼会议室

报告人1：严伟

题目：Investigation of toroidal rotation response to the current ramp up/down rapidly in J-TEXT

摘要：

The goal of this proposal is to investigate the influence of current ramp up/down rapidly on toroidal rotation in J-TEXT tokamak. Plasma current fast ramp up/down can change the plasma internal inductance, the variation of internal inductance may degrade/upgrade the plasma confinement. The experimental results shows that plasma current ramp down can suppress the MHD activities and accelerate the core plasma rotation. Plasma current ramp up can decelerate the core plasma rotation and excite the MHD activities.

报告人2：张晓龙

题目：Light Impurity Transport Studies Under High Density Discharge By Impurity Injection

摘要：

Low-Z impurities in a tokamak discharge affect not only the plasma composition and hence the resistivity but also the local power balance and the maximum plasma density attainable. In J-TEXT, the experimental result shown an asymmetrical impurity transport had been found between HFS and LFS under different discharge conditions. With electron density increasing, this asymmetrical will become noticeable. This is maybe the reason of MARFEs on J-TEXT. CIII radiation intensity at toroidal position of limiter is larger than other position. Carbon source play an important role in this phenomenon. Impurity transport in the edge of plasma is affected the impurity flux.

报告人3：石鹏

题目：Summary of the spring experiment in 2016

摘要：

The edge plasma parameters (electron density, electron temperature, fluctuations etc.) during density limit disruption have been studied by Langmuir probe system and HCN interferometer system. The edge electron density and temperature profiles before density limit disruption have been obtained. The poloidal particle flow during the transition from MARFE to detachment plasma has been observed. And the edge fluctuations are observed to be enhanced during the transition from MARFE to detachment plasma.

报告人4：曾中

题目：等离子体密度和电流爬升对边界转动的影响

摘要：

在本轮实验中分别观测了等离子体密度和电流在爬升过程中对边界转动速度的影响，由于本轮实验ERD诊断数据不够理想，仅可得出一些浅显的结果。密度的爬升可使边界环向转动速度向反电流方向增大，但在密度达到某一阈值后，转动速度会趋于稳定；电流的爬升对边界环向转动速度的影响较小。

APS DPP 会议总结汇报：彭水涛、刘林子、李树才

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