Design and Implementation of an FPGA-Based Data Acquisition System for Accelerator Synchronous Power Supply

Abstract

In synchrotrons, the quality of beam acceleration depends on precise control of the composite magnetic field, which requires multiple sets of magnet power supplies to achieve accurate synchronization. Therefore, multi-channel synchronous acquisition of magnet power supply signals is a key step in evaluating their actual synchronization performance. However, the existing power supply acquisition system of CSRm suffers from issues such as complex structure and large volume. To address the synchronization requirements and system upgrade needs of the acquisition system, a synchronous multi-channel data acquisition system scheme is designed. The system consists of an AD acquisition module and a logic processing module. The AD acquisition module performs synchronous acquisition of multiple sets of power supply signals. The logic processing module, based on the FPGA of the ZYNQ platform, handles data transmission and filtering; the ARM side runs an embedded Ubuntu system and, together with the driver, achieves functional control and data transmission of the acquisition system. Finally, module functions and indicators of the acquisition system are tested. The test results show that the acquisition frequency remains stable above 9999 Hz, and the time difference between two channels is stable around 1 μs, meeting the accelerator channel requirement of less than 5 μs delay, thus verifying the feasibility of the system.