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arXiv 1704.00517physics.plasm-ph
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托卡马克等离子体微波启动的动力学研究

A kinetic study of microwave start-up of tokamak plasmas

Erasmus J. du Toit, Martin R. O'Brien, Roddy G. L. Vann

摘要:

本文提出了一个研究微波启动分布函数随时间演化的动力学模型。分布函数的模型在动量空间中是二维的,但是为了简单和快速计算,没有空间依赖性。在Mega-100球形托卡马克上的实验表明,等离子体电流主要由能量大于$70$ keV的电子携带,并且包括了在这些实验中被认为是重要的效应,即粒子源、轨道损失、回路电压和微波加热,在必要时进行适当的体积平均以给出与空间维度无关的项。该模型预测电子携带的电流与实验中推断的能量相同,尽管电流驱动效率较小。

英文摘要:

A kinetic model for studying the time evolution of the distribution function for microwave start-up is presented. The model for the distribution function is two dimensional in momentum space, but, for simplicity and rapid calculations, has no spatial dependence. Experiments on the Mega Amp Spherical Tokamak have shown that the plasma current is carried mainly by electrons with energies greater than $70$ keV, and effects thought to be important in these experiments are included, i.e. particle sources, orbital losses, the loop voltage and microwave heating, with suitable volume averaging where necessary to give terms independent of spatial dimensions. The model predicts current carried by electrons with the same energies as inferred from the experiments, though the current drive efficiency is smaller.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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