Formation and steady-state maintenance of field reversed configuration using rotating magnetic field current drive
Formation and steady-state maintenance of field reversed configuration using rotating magnetic field current drive
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DOI：
10.1063/1.1426102
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发表时间：
2002
影响因子：
2.2
通讯作者：
Houyang Y Guo;A. Hoffman;R. Brooks;A. Peter;Z. Pietrzyk;S. Tobin;G. Votroubek
中科院分区：
文献类型：
--
作者：
Houyang Y Guo;A. Hoffman;R. Brooks;A. Peter;Z. Pietrzyk;S. Tobin;G. Votroubek
旋转磁场（RMF）已被用来形成和维持场反转配置（FRC）在准稳态。这些实验与稳态旋转陀螺的不同之处在于，FRC类似于θ箍缩装置中形成的FRC，其被拉长并被限制在通量保持器内。RMF通过驱动使初始正偏置场反转的方位电流来创建FRC。然后FRC径向膨胀，压缩初始轴向偏置通量并提高等离子体密度，直到RMF驱动力和电子-离子摩擦之间达到平衡。这通常导致分界线与通量保持器半径的非常高的比率。可实现的最终条件进行比较，简单的分析模型，以估计有效的等离子体电阻率。电子上的RMF扭矩很快转移到离子上，但在这些低密度实验中，离子自旋受到限制，可能是由于离子-中性摩擦，并且不影响基本的电流驱动过程。
Rotating magnetic fields (RMF) have been used to both form and maintain field reversed configurations (FRC) in quasisteady state. These experiments differ from steady-state rotamaks in that the FRCs are similar to those formed in theta-pinch devices, that is elongated and confined inside a flux conserver. The RMF creates an FRC by driving an azimuthal current which reverses an initial positive bias field. The FRC then expands radially, compressing the initial axial bias flux and raising the plasma density, until a balance is reached between the RMF drive force and the electron–ion friction. This generally results in a very high ratio of separatrix to flux conserver radius. The achievable final conditions are compared with simple analytic models to estimate the effective plasma resistivity. The RMF torque on the electrons is quickly transferred to the ions, but ion spin-up is limited in these low density experiments, presumably by ion-neutral friction, and does not influence the basic current drive process...