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首页> 外文期刊>Plasma physics and controlled fusion >Comparison of confinement in resistive-shell reversed-field pinch devices with two different magnetic shell penetration times
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Comparison of confinement in resistive-shell reversed-field pinch devices with two different magnetic shell penetration times

机译：具有两种不同磁壳穿透时间的电阻壳反向场收缩装置的限制比较

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摘要

A loop voltage is required to sustain the reversed-field pinch (RFP) equilibrium. The configuration is characterized by redistribution of magnetic helicity but with the condition that the total helicity is maintained constant. The magnetic field shell penetration time, tau(s), has a critical role in the stability and performance of the RFP Confinement in the EXTRAP device has been studied with two values of tau(s), first (EXTRAP-T2) with tau(s), of the order of the typical relaxation cycle timescale and then (EXTRAP-T2R) with tau(s), much longer than the relaxation cycle timescale, but still much shorter than the pulse length. Plasma parameters show significant improvements in confinement in EXTRAP-T2R. The typical loop voltage required to sustain comparable electron poloidal beta values is a factor of 3 lower in the EXTRAP-T2R device. The improvement is attributed to reduced magnetic turbulence.
机译：需要回路电压来维持反向场收缩（RFP）平衡。该配置的特征在于磁螺旋度的重新分布，但条件是总螺旋度保持恒定。磁场外壳穿透时间tau对RFP的稳定性和性能起着至关重要的作用.EXTRAP设备中的空间限制已通过tau的两个值进行了研究，第一个值为tau（EXTRAP-T2）。 s），大约是典型的弛豫周期时标，然后（EXTRAP-T2R）带有tau，比弛豫周期时标长得多，但仍然比脉冲长度短得多。血浆参数显示出EXTRAP-T2R在禁闭方面的显着改善。在EXTRAP-T2R器件中，维持相当的电子倍体β值所需的典型环路电压要低3倍。改善归因于减小的磁湍流。

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