摘要
A series of power supplies have been upgraded in the power supply system of the Heavy Ion Research Facility in Lanzhou(HIRFL)in 2022.Upgrade of the Sector Focusing Cyclotron(SFC)main magnet power supplies,SFC harmonic magnet power supplies and shimming magnet power supplies are the main renovation project for SFC this year.The SFC is an injector in HIRFL which has been operating for a long time.As a result,its power supplies have been severely ageing,and a renovation project for power supplies is proposed.