The IH-RFQ for HIRFL-CSR injector  

作　　者：Zhong-Shan Li Xue-Jun Yin Heng Du Jia-Wen Xia You-Jin Yuan Jian-Cheng Yang Peng Li Jie Li Xiao-Ni Li Guo-Dong Shen Wen-Wen Ge Wen-Heng Zheng Xiao-Hu Zhang Ke-Dong Wang Yun-Zhe Gao Qi-Yu Kong 

机构地区：[1]Institute of Modern Physics, Chinese Academy of Sciences,Lanzhou 730000, China [2]University of Chinese Academy of Sciences, Beijing 100049,China

出　　处：《Nuclear Science and Techniques》2018年第6期119-127,共9页核技术（英文）

基　　金：supported by the National Natural Science Foundation of China(Nos.11375243,11405237,and 11475235);the Guangdong Innovative and Entrepreneurial Research Team Program(No.2016ZT06G373)

摘　　要：A new linac injector CSR-LINAC for the Cooler Storage Ring of the Heavy Ion Research Facility in Lanzhou(HIRFL-CSR) is proposed to improve the performance of the HIRFL. As a key component of the CSRLINAC, the 108.48-MHz radio frequency quadrupole(RFQ) is under design at the Institute of Modern Physics.Heavy ions with mass-to-charge ratios of 3–7 will be accelerated from 4 to 300 keV/u by the RFQ. In the beam dynamics design, the New Four-Section Procedure is adopted to improve the transmission efficiency and obtain a compact structure. In this paper, a transmission efficiency of 98.0% in the 3.07-m-long cavity was obtained. The Interdigital H-type structure is employed because of its mechanical stability and high shunt impedance. The RF performance of the cavity is investigated by the electromagnetic simulation. The optimized results of the electric field to meet the beam dynamics requirements are presented in this paper.Abstract A new linac injector CSR-LINAC for the Cooler Storage Ring of the Heavy Ion Research Facility in Lanzhou （HIRFL-CSR） is proposed to improve the per- formance of the HIRFL. As a key component of the CSR- LINAC, the 108.48-MHz radio frequency quadrupole （RFQ） is under design at the Institute of Modern Physics. Heavy ions with mass-to-charge ratios of 3-7 will be accelerated from 4 to 300 keV/u by the RFQ. In the beam dynamics design, the New Four-Section Procedure is adopted to improve the transmission efficiency and obtain a compact structure. In this paper, a transmission efficiency of 98.0% in the 3.07-m-long cavity was obtained. The Interdigital H-type structure is employed because of its mechanical stability and high shunt impedance. The RF performance of the cavity is investigated by the electro- magnetic simulation. The optimized results of the electric field to meet the beam dynamics requirements axe pre- sented in this paper.

关 键 词：HIRFL-CSR 注射 线性加速器 动力学设计 机械稳定性 关键部件 现代物理 重离子 

分 类 号：TL503.3[核科学技术—核技术及应用]