Development of corrector magnet power supply for high energy photon source

Purpose High Energy Photon Source(HEPS)requires high quality,high energy beam and ultra-low emittance of 0.1 nm·rad,which puts forward high demand for power supply.In this paper,a high-performance corrector magnet power supply is developed to calibrate and adjust beam track within a certain bandwidth range to ensure the stability of beam track.Methods The prototype of power supply adopts the new"One control Two"control mode,which adjusts the performance of two power supplies simultaneously based on digital control.Results The experimental results show that the stability of the power supply is lower than 20 ppm,which is far better than the design index.Voltage ripple is less than 10 mV,and other performance indexes meet the physical design requirements,which can well meet the requirements of HEPS construction.Conclusions After a lot of experiments and tests,all the parameters passed the design indicators.The successful development of this power supply has laid a foundation for the successful application of HEPS.