Design and implementation of HIAF-Kicker power supply communication system

Abstract

BackgroundIn the injection and extraction Kicker power supply system of High Intensity Heavy-ion Accelerator Facility (HIAF), the transmission efficiency and stability of the control event directly affect the working performance of the power supply.PurposeThis study aims to develop the Kicker power supply communication system for precise control of hundreds of IGBT (insulated gate bipolar transistor) switches in the bipolar solid-state PFN-Marx generator of HIAF-Kicker power supply, hence to provide a gigabit readback path for the waveform data obtained by the high-speed acquisition system.MethodsBased on a digital controller with kernel Xilinx Kintex-7 FPGA (field programmable gate array) chip, the UDP (user datagram protocol) stack described by hardware language as the core of data communication was employed by the system. The scheme of intercepting waveform pulse and its front and back parts for transmission was adopted to improve the communication efficiency and save the system resources. The optical control signals required by the multi-channel power supply were provided by the controller via the connecting optical fiber daughter boards. The shielding case was added to reduce electromagnetic interference and enhance the stability of data transmission.ResultsThe data transmission test shows that the system meets the precise control demand of hundreds of IGBT switches, and the data transmit speed satisfies the needs of gigabit data readback.ConclusionsThe performance of designed system meets the communication requirements of Kicker power supply.

Keywords

• hiaf-kicker
• communication
• udp hardware core
• fpga