基于AD9854重离子治癌加速器高频控制器设计

Design of RF Control of Heavy-ion Accelerator for Cure Based on AD9854

介绍了兰州重离子治癌加速器治疗装置的高频控制系统原理、软件设计、硬件配置和布局;提出并实现了对重离子治癌加速器高频控制系统的高频腔体的精确控制;在硬件上,重离子治癌加速器高频控制系统硬件平台由监视控制板和数据分析板两部分构成,采用双FPGA+DSP+DDS+PXI结构,此结构具有强大的数据处理能力,其核心器件是FPGA和DDS;通过设计编写FPGA VHDL代码实现对DDS芯片的配置,产生的IQ两路信号,分别发送到高频腔、幅度调制器以及偏流电源上,完成幅相同调和频率调制;通过该设计,实现与DAC和ADC操作配合进行高速高效的数据传输,产生高品质束流。

Introduces the principle, software design, hardware configuration and layout of high frequency control system of Lanzhou heavy ion accelerator treatment unit for cure. Proposed and implemented a precise control of the heavy ion radiotherapy accelerator control system for high--frequency RF cavity of the control object. In the hardware , High--frequency heavy ion radiotherapy accelerator control system hardware platform consists of two parts： data analysis and the control board plate, it adopts the double FPGAq-DSPq-DDS＋ PXI structure which has strong data processing ability, and its core device is FPGA and DDS. By designing FPGA VHDL code written for DDS chip configuration, the two signals generated IQ, through to the RF cavity amplitude modulator and bias power respectively, to complete the same harmonic frequency amplitude modulation. Through the design, accomplish with DAC and ADC operating with high speed and efficient data transmission, to produce high quality beam.