# Nuclear Science and Techniques

《核技术》(英文版) ISSN 1001-8042 CN 31-1559/TL     2019 Impact factor 1.556

Nuclear Science and Techniques ›› 2018, Vol. 29 ›› Issue (6): 89

• SYNCHROTRON RADIATION TECHNOLOGY AND APPLICATIONS •

### The IH-RFQ for HIRFL-CSR injector

Zhong-Shan Li 1,2 • Xue-Jun Yin 1 • Heng Du 1 • Jia-Wen Xia 1 • You-Jin Yuan 1 • Jian-Cheng Yang 1 • Peng Li 1 • Jie Li • Xiao-Ni Li 1 • Guo-Dong Shen 1 • Wen-Wen Ge 1,2 • Wen-Heng Zheng 1 • Xiao-Hu Zhang 1 • Ke-Dong Wang 1,2 • Yun-Zhe Gao 1,2 • Qi-Yu Kong 1,2 :

1. 1 Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
2 University of Chinese Academy of Sciences, Beijing 100049, China
• Contact: Xue-Jun Yin E-mail:yinxj@impcas.ac.cn
• Supported by:

This work was supported by the National Natural Science Foundation of China (Nos. 11375243, 11405237, and 11475235) and the Guangdong Innovative and Entrepreneurial Research Team Program (No. 2016ZT06G373).

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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. The IH-RFQ for HIRFL-CSR injector.Nuclear Science and Techniques, 2018, 29(6): 89
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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 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.