现代应用物理2025，Vol.16Issue(6)：47-53,7.DOI:10.12061/j.issn.2095-6223.202508032
基于分段线性翼间电压的重离子射频四极加速器(RFQ)冷测与场分布调谐方法
Cold Test and Field Tuning of a Heavy-Ion Radio Frequency Quadrupole Accelerator With Piecewise Variable-Voltage Linear Inter-Vane Voltage for XiPAF
摘要
Abstract
To meet the requirements of the injection beam for the synchrotron in the heavy-ion upgrading project of the Xi'an 200 MeV Proton Application Facility(XiPAF),a heavy-ion radio frequency quadrupole(RFQ)accelerator was developed,capable of accelerating ions with charge-to-mass ratios ranging from 1/6.5 to 1/3.To enhance the acceleration gradient of the RFQ while reducing the peak surface electric field,a piecewise variable-voltage design scheme was adopted,featuring an inter-vane voltage profile that combines a section with linear increasing voltage and a section with constant voltage.The design results indicate that with a cavity length of 3.27 m,the RFQ can accelerate Bi32+ions with a peak current of 50 eμA from 4 keV/u to 0.4 MeV/u,achieving a transmission of 96.8％.By optimizing the cavity structure,the piecewise voltage profile closely matching the design specifications has been achieved.After the completion of machining,brazing,and assembly of the RFQ,rapid field tuning was performed based on genetic algorithm.The tuning results show that the relative deviation between the measured and designed field distributions for the quadrupole mode is within±2％,with the dipole components below 2％,meeting design requirements.This also validates the feasibility of the piecewise variable-voltage structural design for the RFQ.关键词
XiPAF重离子升级工程/射频四极加速器/分段式变电压/冷测调谐/遗传算法Key words
XiPAF upgrading project/radio frequency quadrupole accelerator/piecewise variable-voltage/cold test and tuning/genetic algorithm分类
能源科技引用本文复制引用
周浩,岳灿彬,马鹏飞,周鑫宇,邢庆子..基于分段线性翼间电压的重离子射频四极加速器(RFQ)冷测与场分布调谐方法[J].现代应用物理,2025,16(6):47-53,7.基金项目
强脉冲辐射环境模拟与效应国家重点实验室基金资助项目(SKLIPR2001) （SKLIPR2001）
