Gunn J P, Pascal J-Y
CEA, IRFM, F-13108 Saint-Paul-Lez-Durance, France.
Rev Sci Instrum. 2011 Dec;82(12):123505. doi: 10.1063/1.3661128.
A new in situ reciprocating probe system has been developed to provide scrape-off layer measurements in the Tore Supra tokamak. The probe motion is provided by the rotation of an energized coil in the tokamak magnetic field. Simple analytic approximations to the exact numerical model were used to identify the important parameters that govern the dynamics of the system, and optimize the coil geometry, the electrical circuit, and the stiffness of the retaining spring. The linear speed of the probe is directly proportional to the current induced by the coil's rotation; its integral gives the coil position, providing a means to implement real-time feedback control of the probe motion. Two probes were recently mounted on a movable outboard antenna protection limiter in Tore Supra and provided automatic measurements during the 2011 experimental campaign.
一种新型的原位往复式探针系统已被开发出来，用于在托雷·苏普拉托卡马克装置中进行刮削层测量。探针的运动由托卡马克磁场中通电线圈的旋转提供。使用对精确数值模型的简单解析近似来确定控制系统动力学的重要参数，并优化线圈几何形状、电路和固定弹簧的刚度。探针的线速度与线圈旋转感应的电流成正比；其积分给出线圈位置，提供了一种实现探针运动实时反馈控制的方法。最近，两个探针安装在托雷·苏普拉的一个可移动外侧天线保护限制器上，并在2011年实验期间提供了自动测量。
