Analysis and simulation of the tune ripple effect on beam spill ripple in RF-KO slow extraction

Wen-Bo Ye; Hong-Juan Yao; Shu-Xin Zheng; Xia-Ling Guan; Xue-Wu Wang

doi:10.1007/s41365-022-01038-6

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Analysis and simulation of the tune ripple effect on beam spill ripple in RF-KO slow extraction

ACCELERATOR, RAY TECHNOLOGY AND APPLICATIONS | Updated：2022-07-27

- Analysis and simulation of the tune ripple effect on beam spill ripple in RF-KO slow extraction
- Analysis and simulation of the tune ripple effect on beam spill ripple in RF-KO slow extraction
- Nuclear Science and Techniques 2022年33卷第5期文章编号：60
- Affiliations：
  
  1.Key Laboratory of Particle & Radiation Imaging (Tsinghua University), Ministry of Education, Beijing 100084, China
  2.Laboratory for Advanced Radiation Sources and Application, Tsinghua University, Beijing 100084, China
  3.Department of Engineering Physics, Tsinghua University, Beijing 100084, China
- Author bio：
  
  ywb2021@foxmail.com
  zhengsx@tsinghua.edu.cn
- Funds：
  
  National Natural Science Foundation of China(12075131)
- DOI：10.1007/s41365-022-01038-6
  中图分类号：
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Wen-Bo Ye, Hong-Juan Yao, Shu-Xin Zheng, 等. Analysis and simulation of the tune ripple effect on beam spill ripple in RF-KO slow extraction[J]. Nuclear Science and Techniques, 2022,33(5):60

Wen-Bo Ye, Hong-Juan Yao, Shu-Xin Zheng, et al. Analysis and simulation of the tune ripple effect on beam spill ripple in RF-KO slow extraction[J]. Nuclear Science and Techniques, 2022,33(5):60
Wen-Bo Ye, Hong-Juan Yao, Shu-Xin Zheng, 等. Analysis and simulation of the tune ripple effect on beam spill ripple in RF-KO slow extraction[J]. Nuclear Science and Techniques, 2022,33(5):60 DOI： 10.1007/s41365-022-01038-6.

Wen-Bo Ye, Hong-Juan Yao, Shu-Xin Zheng, et al. Analysis and simulation of the tune ripple effect on beam spill ripple in RF-KO slow extraction[J]. Nuclear Science and Techniques, 2022,33(5):60 DOI： 10.1007/s41365-022-01038-6.

摘要

Abstract

Tune ripple has a significant influence on beam spill ripple in RF-knockout (RF-KO) slow extraction. In this study, a model was proposed to explain how the tune ripple affects the beam spill in RF-KO slow extraction; consequently, a simulation was performed using the lattice of the Xi'an Proton Application Facility (XiPAF) synchrotron to verify the model. The simulation demonstrates that the tune ripple influences the beam spill in two ways. On the one hand, the tune ripple causes a direct fluctuation in the separatrix area, which induces beam spill ripple. On the other hand, the tune ripple influences the emittance growth rate in RF-knockout slow extraction. These two aspects simultaneously contribute to the beam spill ripple.

关键词

Keywords

RF-knockout slow extractionSynchrotronTune ripplePower supply rippleBeam spill ripple

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