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A slow orbit feedback algorithm based on expanded response matrix for SSRF storage ring

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Abstract

Background

Most of the global orbit feedback algorithms in storage rings are based on response matrix (RM) singular value decomposition method. Commonly, the RM is the orbit distortion along the ring responding to the steering magnet changes. For those methods RF frequency feedback is in a separated process.

Methods and Results

In this paper, the response matrix is expanded to the orbit distortion caused by the RF frequency variation. With this expanded RM, the orbit correction via steering magnet changes and RF frequency adjustment can be accomplished in one step. The commissioning results are carried out  showing that the algorithm works stably.

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Funding

Funding was supported by the National Natural Science Foundation of China (No. 11975298).

Author information

Authors and Affiliations

  1. Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai, 201204, China

    Bocheng Jiang, Hanghua Xu & Kun Wang

  2. Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, 201800, China

    Kun Wang

  3. University of the Chinese Academy of Sciences, Beijing, 100049, China

    Kun Wang

Authors
  1. Bocheng Jiang
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  2. Hanghua Xu
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  3. Kun Wang
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Corresponding author

Correspondence to Bocheng Jiang.

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Jiang, B., Xu, H. & Wang, K. A slow orbit feedback algorithm based on expanded response matrix for SSRF storage ring. Radiat Detect Technol Methods 6, 540–543 (2022). https://doi.org/10.1007/s41605-022-00352-2

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  • DOI: https://doi.org/10.1007/s41605-022-00352-2

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