TEXTOR托卡马克上磁涨落水平的研究(英文)

Determination of the magnetic fluctuation level in TEXTOR

利用逃逸电子的输运来诊断TEXTOR托卡马克上等离子体大破裂下的磁涨落水平。TEXTOR托卡马克采用包含产生逃逸影响的零维模型模拟了等离子体大破裂下的电流演化.根据模型参数-逃逸电子的损失速率,我们得到了TEXTOR托卡马克上的磁涨落水平。该磁涨落水平大约在10-5量级,磁涨落水平随注入等离子体中原子数目的增加而增强。

The runaway transport is used to probe the magnetic fluctuation level for TEXTOR disruption plasmas. A zero dimensional model of the current quench including the generation of runaway electrons has been applied to simulate the experimental current evolutions during major disruptions [ Plasma Phys. Control. Fusion 50 （2008） 1050071- According to the loss rate of runaway electrons used in the fitting parameter of the zero dimensional model, the magnetic fluctuation level in TEXTOR is derived. It is found that the magnetic fluctuation level is in the order of 10^-5, and it increases with the atom number mixed into the plasma.