Beam performance of the SHINE dechirper

You-Wei Gong; Meng Zhang; Wei-Jie Fan; Duan Gu; Ming-Hua Zhao

doi:10.1007/s41365-021-00860-8

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Beam performance of the SHINE dechirper

ACCELERATOR, RAY TECHNOLOGY AND APPLICATIONS | Updated：2021-03-31

- Beam performance of the SHINE dechirper
- Beam performance of the SHINE dechirper
- 核技术（英文版） 2021年32卷第3期文章编号：29
- 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.Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China
- Author bio：
  
  Corresponding author, guduan@zjlab.org.cn
- Funds：
  
  Youth Innovation Promotion Association CAS;National Key Research and Development Program of China;National Natural Science Foundation of China
- DOI：10.1007/s41365-021-00860-8
  中图分类号：
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You-Wei Gong, Meng Zhang, Wei-Jie Fan, 等. Beam performance of the SHINE dechirper[J]. 核技术（英文版）, 2021,32(3):29

You-Wei Gong, Meng Zhang, Wei-Jie Fan, et al. Beam performance of the SHINE dechirper[J]. Nuclear Science and Techniques, 2021,32(3):29
You-Wei Gong, Meng Zhang, Wei-Jie Fan, 等. Beam performance of the SHINE dechirper[J]. 核技术（英文版）, 2021,32(3):29 DOI： 10.1007/s41365-021-00860-8.

You-Wei Gong, Meng Zhang, Wei-Jie Fan, et al. Beam performance of the SHINE dechirper[J]. Nuclear Science and Techniques, 2021,32(3):29 DOI： 10.1007/s41365-021-00860-8.

摘要

Abstract

A corrugated structure is built and tested on many FEL facilities, providing a ’dechirper’ mechanism for eliminating energy spread upstream of the undulator section of X-ray FELs. The wakefield effects are here studied for the beam dechirper at the Shanghai high repetition rate XFEL and extreme light facility (SHINE), and compared with analytical calculations. When properly optimized, the energy spread is well compensated. The transverse wakefield effects are also studied, including the dipole and quadrupole effects. By using two orthogonal dechirpers, we confirm the feasibility of restraining the emittance growth caused by the quadrupole wakefield. A more efficient method is thus proposed involving another pair of orthogonal dechirpers.

关键词

Keywords

Corrugated structureEnergy spreadWakefieldShanghai high repetition rate XFEL and extreme light facility

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