A DIGITAL POWER SUPPLY CONTROL MODE IN HEAVY-ION ACCELERATOR BASED ON DUAL NIOS CORES*

According to the features of digital power supply and the requirements of pulse mode, this paper introduces a Digital Power Supply Control Mode (DPSCM) in HeavyIon Accelerator based on dual Nios cores, which meets the requirements of two basic running modes. The new method develops a system on-chip based on dual Nios cores by using SOPC technology in the Altera EP2C70 FPGA. Compared with traditional DPSCM, the dual Nios cores run simultaneously and cooperate well. As a result, the efficiency of the system is remarkably improved. Cores in parallel can realize reference waveforms switch in pulse mode effectively. We choose an 1150A/185V power supply as test bench. The Experimental result indicates that the system can realize the function of pulse mode, and the stability and tracking error meet the design requirements.