Abstract:

Runaway confinement time in ohmic and additionally heated tokamak plasmas presents an anomalous behavior in comparison with theoret ical predictions based on neoclassical models. A one-dimensional numerical including generat ion and loss effects for runaway electrons is used to deduce the dependence of runaway energy  ε_r on runaway confinement time. The simulation results are presented in the form of a scaling law for ε_r on plasma parameters. The scaling of ε_r and therefore the runaway confinement t ime and runaway electron diffusivity has been studied in the HL-1M tokamak, by measuring hard X-ray spectra under different experimental condit ions.

Key words: Runaway energy, Runaway confinement time, Runaway electron diffusivity, Hard X-ray spectra

摘要：

使用一维数值模型, 推断了逃逸能量ε_r与逃逸约束时间τ_r的关系。模拟结果给出能量ε_r 和放电参数的定标律。在HL- 1M 装置中不同实验条件下测量了硬X 射线谱, 研究了逃逸电子能量 ε_r模拟的定标律, 并推导出HL- 1M 装置放电的逃逸电子的约束时间与逃逸电子扩散系数。

关键词: 逃逸电子能量, 逃逸电子约束时间, 逃逸扩散系数, 硬X 射线谱