SAP2025 - Proceedings
Urumqi, China
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URLhttps://doi.org/10.18429/JACoW-SAP2025-THP34
TitleAnalytical study of fringe fields and nonlinear transport in a sector-based energy analysis system
Authors
  • Y. Wang, Y. Zeng, D. Xiao, H. Hu, K. Liu, T. Hu
    Huazhong University of Science and Technology
  • Y. Lu, G. Feng
    University of Science and Technology of China
AbstractEnergy Analysis (EA) systems based on sector magnets are widely applied in accelerators. Nevertheless, for low-energy electron beams below 15 MeV, extra measurement errors introduced by fringe fields of the sector magnet cannot be neglected. Moreover, initial beams with large momentum spread will encounter system errors arising from nonlinear transport. Such fringe-field-induced aberrations and their impact on momentum spectrum are studied analytically and a compensation scheme considering high-order momentum spread terms is proposed. Further, the theoretical derivation is validated with simulations, and correction of second-order aberration errors is explored via data processing. These methods and conclusions improve the accuracy of built/operational EA systems without extra costs.
Paperdownload: THP34.pdf
CiteBibTeX, LaTeX, Text/Word, RIS, EndNote
Conference15th Symposium on Accelerator Physics
Series
LocationUrumqi, China
Date02-05 Sep 2025
PublisherJACoW Publishing, Geneva, Switzerland
Editorial BoardLin Bian - Editor in Chief (IHEP), Zhichu Chen (SARI), Fancong Zeng (IHEP).
Online ISBN978-3-95450-279-0
Online ISSN3043-0208
Received20 October 2025
Revised11 November 2025
Accepted11 November 2025
Issued09 March 2026
DOI10.18429/JACoW-SAP2025-THP34
Pages69-71
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