电子回旋共振加热期间的电子热输运和约束

Electronic thermal transport and confinement during ECRH

采用ONETWO软件对在HL-2A托卡马克上电子回旋共振加热的实验进行分析,研究了ECRH加热期间的电子热输运和约束行为.ECRH引起了等离子体的共振区域电子温度上升,电子热输运系数变大.同时共振区域能量的增加使能量约束变坏,约束模式由一般模式(O模)转变为低约束模式(L模),能量约束时间下降.这些结果将对HL-2A中进一步提高安全运行和电子热输运的研究提供参考.

The ECRH experiment on HL-2A tokamak was analyzed by the ONETWO transport code,and the electronic thermal transport and confinement was studied during ECRH. With the electron cyclotron wave be injected,the plasma electron temperature raise in the resonance region,and the electron thermal transport coefficients increased. Meanwhile the increasing energy in resonance region caused deterioration of the energy confinement,confined model from the O-mode into L-mode and energy confinement time decreased. These results of HL-2A will further enhance the safe operation and understand the electronic thermal transport.