重离子治疗装置同步加速器高频控制系统研制

丛岩; 许少凡; 李世龙; 王皓宁; 张瑞锋; 韩小东; 周睿怀; 仪孝平; 冯勇; 杨亚龙

doi:10.11804/NuclPhysRev.36.01.055

重离子治疗装置同步加速器高频控制系统研制

Development of RF Control System for Heavy Ion Medical Machine

摘要

摘要: 重离子治疗对病灶周围健康组织损伤最小，对癌细胞杀伤效果最佳，是当代公认的先进有效的放疗方法。重离子Bragg峰与束流能量的关系要求重离子束能够在不同的能量间切换，需要加速器实现变能量加速。变能量加速的关键系统是同步加速器高频计算机控制系统；要求该系统能够根据光触发事例自动更换加速波形文件。该系统主要由三块基于PXI总线的FPGA板卡组成，采用了SOPC、DSP等技术，实现了波形文件的接收、插值及输出等功能。目前，控制系统经过长期稳定性试验，指标完全满足重离子治疗要求。

Heavy ion therapy is the most advanced and effective method of radiotherapy. Because it has the advantage that it has minimal damage to surrounding healthy tissue and the greatest cancer celling killing effect. The relationship between heavy ion Bragg peak and beam energy requires the accelerator to switch the beam between different energy. The PXI RF control system plays an important role in Heavy Ion Medical Machine(HIMM). It can automatically change the waveform files according to the optical event. The system is mainly consisted by three FPGA cards, based on PXI bus, and mainly use the technology such as SOPC, DSP and so on. The PXI RF control system for HIMM has been tested through a long-term stability experiments, the system meets the proposed requirements.

Abstract: Heavy ion therapy is the most advanced and effective method of radiotherapy. Because it has the advantage that it has minimal damage to surrounding healthy tissue and the greatest cancer celling killing effect. The relationship between heavy ion Bragg peak and beam energy requires the accelerator to switch the beam between different energy. The PXI RF control system plays an important role in Heavy Ion Medical Machine(HIMM). It can automatically change the waveform files according to the optical event. The system is mainly consisted by three FPGA cards, based on PXI bus, and mainly use the technology such as SOPC, DSP and so on. The PXI RF control system for HIMM has been tested through a long-term stability experiments, the system meets the proposed requirements.

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