An overview of intrinsic plasma rotation studies in Ohmic L-mode discharges carried out in the Tokamak Chauffage Alfvn Brsilien (TCABR) tokamak is presented. Measurements of plasma poloidal and toroidal rotation, and a comparison against neoclassical theory, are presented. The results show that poloidal rotation is in good agreement with neoclassical theory while toroidal rotation is found to be anomalous. A new technique that allows for high temporal resolution measurements of plasma rotation is presented. This technique is used to test two models of intrinsic toroidal rotation: the so-called Helander model (Helander et al 2003 Physics of Plasmas 10 4396) and Rozhansky model (Rozhansky 2013 Perpendicular currents and electric fields in fully and partially ionized magnetized plasma Physics of Plasmas 24 101614). As TCABR is a relatively small device, the influence of the neutrals that form the basis of this model is expected to be enhanced. The results indicate that the mechanism proposed by Helander does not contribute significantly to the intrinsic toroidal rotation in TCABR plasmas. The measurements, however, indicate that the frictional force proposed by Rozhansky might be responsible for part of the intrinsic toroidal rotation observed in TCABR plasmas.

概述了在托卡马克 Chauffage Alfvn Brsilien (TCABR) 托卡马克中进行的欧姆 L 模式放电中的固有等离子体旋转研究。介绍了等离子体极向和环形旋转的测量，以及与新古典理论的比较。结果表明，极向旋转与新古典理论非常吻合，而环向旋转被发现是异常的。提出了一种允许等离子体旋转的高时间分辨率测量的新技术。该技术用于测试两种固有的环形旋转模型：所谓的 Helander 模型（Helander等人2003 Physics of Plasmas 104396) 和 Rozhansky 模型（Rozhansky 2013 完全和部分电离磁化等离子体中的垂直电流和电场物理等离子体 24 101614）。由于 TCABR 是一个相对较小的设备，因此构成该模型基础的中性点的影响有望得到增强。结果表明，Helander 提出的机制对 TCABR 等离子体中的固有环形旋转没有显着贡献。然而，测量结果表明 Rozhansky 提出的摩擦力可能是在 TCABR 等离子体中观察到的部分固有环形旋转的原因。