Design, fabrication, and cold test of S-band high-gradient accelerating structure for compact proton therapy facility

Yu Zhang; Wen-Cheng Fang; Xiao-Xia Huang; Jian-Hao Tan; Cheng Wang; Chao-Peng Wang; Zhen-Tang Zhao

doi:10.1007/s41365-021-00869-z

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Design, fabrication, and cold test of S-band high-gradient accelerating structure for compact proton therapy facility

ACCELERATOR, RAY TECHNOLOGY AND APPLICATIONS | Updated：2021-05-10

- Design, fabrication, and cold test of S-band high-gradient accelerating structure for compact proton therapy facility
- Nuclear Science and Techniques Vol. 32, Issue 4, Article number: 38(2021)
- Affiliations：
  
  1.Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
  2.University of Chinese Academy of Sciences, Beijing 100049, China
  3.ShanghaiTech University, Shanghai 201210, China
  4.Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201204, China
- Author bio：
  
  Corresponding author: fangwencheng@zjlab.org.cn
- Funds：
- DOI：10.1007/s41365-021-00869-z
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Yu Zhang, Wen-Cheng Fang, Xiao-Xia Huang, et al. Design, fabrication, and cold test of S-band high-gradient accelerating structure for compact proton therapy facility. [J]. Nuclear Science and Techniques 32(4):38(2021)
DOI：

Yu Zhang, Wen-Cheng Fang, Xiao-Xia Huang, et al. Design, fabrication, and cold test of S-band high-gradient accelerating structure for compact proton therapy facility. [J]. Nuclear Science and Techniques 32(4):38(2021) DOI： 10.1007/s41365-021-00869-z.

摘要

Abstract

An S-band high-gradient accelerating structure is designed for a proton therapy linear accelerator (linac) to accommodate the new development of compact, single-room facilities and ultra-high dose rate (FLASH) radiotherapy. To optimize the design, an efficient optimization scheme is applied to improve the simulation efficiency. An S-band accelerating structure with 2856 MHz is designed with a low beta of 0.38, which is a difficult structure to achieve for a linac accelerating proton particles from 70 to 250 MeV, as a high gradient up to 50 MV/m is required. A special design involving a dual-feed coupler eliminates the dipole field effect. This paper presents all the details pertaining to the design, fabrication, and cold test results of the S-band high-gradient accelerating structure.

关键词

Keywords

S-bandHigh gradientAccelerating structureCompactSingle-room facilityDual-feed couplerCold test.

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