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On the possibility of inducing strong plasma convection in the divertor of MAST

机译：关于MAST分流器中引起强等离子对流的可能性

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In this paper, a theory is developed to describe scrape-off layer (SOL) broadening by inducing convective cells through divertor plate biasing in a tokamak. The theory is applied to the Mega-Ampere Spherical Tokamak, where such experiments are planned in the near future. Criteria are derived for achieving strong broadening and for exciting shear-flow turbulence in the SOL, and these criteria are shown to be attainable in practice. It is also shown that the magnetic shear present in the vicinity of the X-point is likely to confine the potential perturbations to the divertor region below the X-point, leaving the part of the SOL that is in direct contact with the core plasma intact. The current created in the SOL by the biasing and the associated heating power are also calculated and are found to be modest. [References: 22]
机译：在本文中，发展了一种理论来描述刮擦层（SOL）的加宽，该刮擦层是通过在托卡马克中通过偏滤板偏置来诱导对流细胞而产生的。该理论已应用于计划在不久的将来进行此类实验的兆安球形托卡马克。得出了在SOL中实现强展宽和激发剪切流湍流的标准，并且这些标准在实践中是可以达到的。还表明存在于X点附近的磁剪切可能会将潜在的扰动限制在X点以下的偏滤器区域，而使SOL的直接与核心等离子体接触的部分保持完整。还计算了通过偏置在SOL中产生的电流和相关的加热功率，发现该电流适中。 [参考：22]

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