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Control application of a superconducting magnet power supply based on EPICS

The superconducting quadrupole magnets (SCQs) are powered by 16 power supplies in the interaction region of the BEPCII. The control application of these power supplies must be interlocked with the quench protection system to protect the superconducting magnet and relevant devices. This paper describes the development procedures of this control application using EPICS and the operating result with the quench protection system on-site.