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Development of deflecting magnet for HL-2M 5MW-NBI beam line

According to the design parameters of 5MW-NBI beam line of HL-2M tokamak, spatial arrangement of components, geometrical focus characters and so on, 3D model of the deflecting magnet with 8 groups of wires is built up. With an electromagnetic field simulation software-CST Studio, the deflection magnetic field distribution and deflection trajectories of ion beams with different components are obtained. With the simulation results the physical structure of deflecting magnet is optimized, the engineering design of the magnet is completed and then the manufacture and test are finished. The testing result of the magnetic field distribution of the deflecting magnet shows: the error between measurement value and calculation result is less than ±5%, and the machined deflecting magnet can meet the design requirement.