Zhang W, Chang J F, Wan B N, Xu G S, Xiao C J, Li B, Xu C S, Yan N, Wang L, Liu S C, Jiang M, Liu P
Institute of Plasma Physics, Chinese Academy of Sciences, P.O. Box 1126, Hefei 230031, People's Republic of China.
Rev Sci Instrum. 2010 Nov;81(11):113501. doi: 10.1063/1.3499237.
A new fast reciprocating probe system (FRPS) has been built and installed on the outer midplane of the EAST tokamak to investigate the profiles of the boundary plasma parameters such as electron density and temperature. The system consists of a two-stage motion drive mechanism: slow motion and fast motion. The fast motion is powered by a servo motor, which drives the probe horizontally up to 50 cm to scan the edge region of the EAST tokamak. The maximum velocity achieved is 2 m/s. High velocity and flexible control of the fast motion are the remarkable features of this FRPS. A specially designed connector installed at the front end of the probe shaft makes it easy to install or replace the probe head on FRPS. During the latest experimental campaign in the spring of 2010, a probe head with seven tips, including two tips for a Mach probe, has been used. An example is given for simultaneous profile measurements of the plasma temperature, plasma density, and the plasma flow velocity.
一种新型快速往复式探针系统（FRPS）已被构建并安装在EAST托卡马克装置的外中平面上，用于研究边界等离子体参数（如电子密度和温度）的分布。该系统由两级运动驱动机构组成：慢速运动和快速运动。快速运动由伺服电机驱动，它可将探针水平驱动至50厘米，以扫描EAST托卡马克装置的边缘区域。实现的最大速度为2米/秒。快速运动的高速度和灵活控制是该FRPS的显著特点。安装在探针轴前端的特殊设计连接器使得在FRPS上安装或更换探头变得容易。在2010年春季的最新实验中，使用了一个带有七个尖端的探头，其中包括两个用于马赫探针的尖端。给出了一个同时测量等离子体温度、等离子体密度和等离子体流速分布的示例。
