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Beam-dust interactions in an e+e− collider

Kazuhito Ohmi1,2,3, Hitoshi Fukuma1, and Shinji Terui1

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Phys. Rev. Accel. Beams 29, 021002 – Published 13 February, 2026

DOI: https://doi.org/10.1103/dwmr-qldc

Abstract

In recent electron-positron colliders designed and operated with very low emittance and high current, the energy density of the beam has increased significantly compared to earlier designs. Under these conditions, interactions between the beam and residual materials within the beam pipe exert considerable mutual influence. The residual materials are heated by the beam, leading to evaporation, charging, and possible fission, eventually resulting in a plasma state. Conversely, the beam undergoes emittance growth due to electromagnetic interactions with the resulting plasma. We investigate the effects of such dust-induced plasma on the beam through numerical simulations of these processes.

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References (24)

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Phys. Rev. Accel. Beams 29, 021002– Published 13 February, 2026
  • Received 4 October 2025
  • Accepted 13 January 2026
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Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI.

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