Study of plasma rotation and confinement improvement using multi-fluid transport code with real geometry for tokamaks

详细阐述了本研究的代表开发的多流体输运程序ASK/TX所涉及的物理过程，并新增或升级了几个模型。利用该程序，阐明了径向电场、径向电流矩和等离子体旋转之间的密切关系。通过将独特的方法实施到轨道跟踪代码中，已经牢固地建立了用于仿真和实验分析的定量估计径向电流转矩的方法。提出了一种新的计算束流屏蔽因子的碰撞相关模型。

Physics involved in a multi-fluid transport code TASK/TX developed by the representative of this research has been in detail elucidated and several models have been newly added or upgraded. Using the code, the close relationship among the radial electric field, the radial current torque and plasma rotation has been clarified. The way to quantitatively estimate the radial current torque for both simulations and experimental analyses has been firmly established by implementing the unique method into the orbit-following code. The novel collisionality-dependent model that can calculate the shielding factor of the beam-driven current has been newly developed.