Low beta superconducting cavity system design for HIAF iLinac

• Published in: Nuclear engineering and technology Vol. 55; no. 7; pp. 2466 - 2473
• Main Authors: Xu, Mengxin, He, Yuan, Zhang, Shengxue, Liu, Lubei, Jiang, Tiancai, Liang, Zehua, Liu, Tong, Tao, Yue, Li, Chunlong, Huang, Qitong, Wang, Fengfeng, Guo, Hao, Bai, Feng, Xu, Xianbo, Huang, Shichun, Li, Xiaoli, Wang, Zhijun, Zhang, Shenghu, Yang, Jiancheng, Zaplatin, Evgeny
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.07.2023; Elsevier; 한국원자력학회
• Subjects: Half-wave resonator; HIAF; iLinac; Low beta cavity; Quarter-wave resonator; Superconducting cavity; 원자력공학; Low beta cavity; Superconducting cavity; Quarter-wave resonator; HIAF; iLinac; Half-wave resonator
• ISSN: 1738-5733; 2234-358X
• DOI: 10.1016/j.net.2023.04.010

A superconducting ion-Linac (iLinac), which is supposed to work as the injector in the High Intensity heavy-ion Accelerator Facility project, is under development at the Institute of Modern Physics (IMP), Chinese Academy of Sciences. The iLinac is a superconducting heavy ion linear accelerator approximately 100 meters long and contains 96 superconducting cavities in two types of 17 cyromodules. Two types of superconducting resonators (quarter-wave resonators with a frequency of 81.25 MHz and an optimal beta β = v/c = 0.07 called QWR007 and half-wave resonators with a frequency of 162.5 MHz and an optimal beta β = 0.15 called HWR015) have been investigated. The cavity design included extensive multi-parameter electromagnetic simulations and mechanical analysis，and its results are described in details. The fundamental power coupler and cavity dynamic tuner designs are also presented in this article. The prototypes are under manufacturing and expected to be ready in 2023. •HIAF is one of the most powerful heavy ion accelerators in the world. This paper overview the SRF system design for HIAF.•This work showed the QWR007 and HWR015 cavity’s RF design, and multi-physics simulation results.•A dual-warm-ceramic window coupler structure was used in the design, which have more reliability against the vacuum break.