Work

Fully plasma-based electron injector for a linear collider or XFEL

Year: 2025

Type: article

Abstract: We demonstrate through high-fidelity particle-in-cell (PIC) simulations a simple approach for efficiently generating 20 + GeV electron beams with the necessary charge, energy spread, and emittance for use as an injector in a future linear collider or a next generation XFEL. A high quality injected bunch is generated by self-focusing an unmatched electron driver in a nonlinear plasma wakefield. Over pump depletion distances, the drive beam dynamics and self-loading effects lead to high energy, low-energy spread output beams. For plasma densities of 10 18 c m − 3 , PIC simulation results indicate that self-injected beams with 0.52 n C charge can be accelerated to 20 GeV with projected core energy spreads of ≲ 1 % , normalized slice emittances of 110 n m , peak normalized brightness of ≳ 10 19 A / m 2 / rad 2 , and transfer efficiencies of ≳ 44 % .

Source: Physical Review Research

DOI: 10.1103/physrevresearch.7.023118

Authors: T. N. Dalichaouch, X. L. Xu, F. Li, F. S. Tsung, W. B. Mori

Institutions: University of California, Los Angeles, Peking University, Tsinghua University

Language: English

Topic: Laser-Plasma Interactions and Diagnostics

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,625

Funders: National Science Foundation, U.S. Department of Energy, National Energy Research Scientific Computing Center