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arXiv · 2509.08420

Slice Emittance Preservation and Focus Control in a Passive Plasma Lens

J. Björklund Svensson·J. Beinortaitė·L. Boulton·B. Foster·J. M. Garland·P. González Caminal·M. Huck·H. Jones·A. Kanekar·G. Loisch·J. Osterhoff·F. Peña·S. Schröder·M. Thévenet·S. Wesch·M. Wing·J. C. Wood·R. D'Arcy
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Abstract

Strong, symmetrically focusing plasma lenses are promising for accommodating the small beams associated with plasma-based accelerators and collider final foci. However, while focusing with active and passive plasma lenses has been experimentally demonstrated, compatibility with high-brightness beams relevant for applications has not. In this work, we show experimentally that passive plasma lenses can preserve free-electron-laser-quality slice emittance while focusing two orders of magnitude more strongly than quadrupole magnets, and that the focal parameters can be controlled.

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J. Björklund Svensson, J. Beinortaitė, L. Boulton, B. Foster, J. M. Garland, P. González Caminal, M. Huck, H. Jones, A. Kanekar, G. Loisch, J. Osterhoff, F. Peña, S. Schröder, M. Thévenet, S. Wesch, M. Wing, J. C. Wood, R. D'Arcy. 2025-09-10. Slice Emittance Preservation and Focus Control in a Passive Plasma Lens. https://doi.org/10.1103/jjxz-3fr4

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