关键词: HL-2M 装置；磁测量；定位安装；工装结构 

Abstract: The installation precision order of magnetic sensors is analyzed by numerical evaluation. The R 
and Z coordinate error of the flux loops is within ±2.0mm, and the R, Z error of the magnetic probes is within 
±1.0mm and θ error ±0.1°. The locator devices adopt the high-precision laser tracker and the arm-measuring 
machine, which have a positioning accuracy of 0.3mm. According to the installation characteristics of different 
kinds of magnetic sensors, the location structures of sensors including the flux loops, magnetic probe arrays, 
diamagnetic loops, are optimized and designed. The installation accuracy of magnetic measurement sensors on the 
HL-2M tokamak is controlled within 0.5mm. 

Key words: HL-2M tokamak, Magnetic measurement, Location, Fixture structure