关键词: HL-2M 装置；磁体系统；安装集成；基准网；定位装配 

Abstract:  To improve the magnet system installation accuracy, 63 reference points were installed in the 
HL-2M hall to form a measurement reference network. The local coordinates of the characteristic points on every 
coil were measured with the established local coordinate system and the high-precision measuring equipment such 
as the laser tracker. And then the coordinates of these points were converted to the installation coordinate system 
through the reference network and the best fit, which could be used for the positioning of the coils. When the 
integration of these coils was completed, the coaxality between the center column of toroidal field (TF) coils and 
the supporting foundation was ∅2.03mm. The elevation deviation of the PF1~4 coils was±0.5mm, and the 
coaxality with the center column was ∅2.60mm. The coaxality between the PF5~8 coils and the center column 
was below ∅3.00mm, and the elevation deviation of these coils was within the interval of [−1mm, 1mm]. So, the 
installation accuracy of these coils meet the installation requirements. 

Key words:  HL-2M tokamak, Magnet system, Installation integration, Reference net, Positioning assembly