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Confinement scaling in the advanced reversed-field pinch

机译:高级反向场收缩中的约束缩放

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摘要

A numerical study of confinement scaling in the advanced reversed-field pinch ( RFP) is presented. In the advanced RFP, the tearing mode activity that dominates conventional RFP plasma fluctuations is reduced by current profile control ( CPC). In this work, theoretical limits for confinement in the advanced RFP are explored, modelling a CPC with internally applied electric fields. The obtained scalings of ion temperature, poloidal beta value, energy confinement time and magnetic field fluctuations indicate strongly improved confinement as compared with the conventional RFP. Reactor relevant on-axis temperatures are obtained using ohmic heating alone. Pressure driven modes persist within the present 3D nonlinear, resistive, single-fluid MHD model, but may be reduced by non-ideal effects.
机译:提出了一种先进的反向场收缩(RFP)中限制尺度的数值研究。在高级RFP中,通过电流曲线控制(CPC)减少了控制常规RFP等离子体波动的撕裂模式活动。在这项工作中,探索了限制在高级RFP中的理论极限,使用内部施加的电场对CPC进行了建模。与传统的RFP相比,获得的离子温度,倍体β值,能量限制时间和磁场波动的标度表明,极大地改善了限制条件。仅使用欧姆加热即可获得与反应堆相关的轴上温度。压力驱动模式在当前的3D非线性,电阻性,单流体MHD模型中仍然存在,但可能会因非理想效果而降低。

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