We demonstrate through high-fidelity particle-in-cell (PIC) simulations a simple approach for efficiently generating 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 , PIC simulation results indicate that self-injected beams with charge can be accelerated to 20 GeV with projected core energy spreads of , normalized slice emittances of , peak normalized brightness of , and transfer efficiencies of .
Dalichaouch, T. N., et al. "Fully plasma-based electron injector for a linear collider or XFEL." Physical Review Research, vol. 7, no. 2, May. 2025. https://doi.org/10.1103/PhysRevResearch.7.023118
Dalichaouch, T. N., Xu, X. L., Li, F., Tsung, F. S., & Mori, W. B. (2025). Fully plasma-based electron injector for a linear collider or XFEL. Physical Review Research, 7(2). https://doi.org/10.1103/PhysRevResearch.7.023118
Dalichaouch, T. N., Xu, X. L., Li, F., et al., "Fully plasma-based electron injector for a linear collider or XFEL," Physical Review Research 7, no. 2 (2025), https://doi.org/10.1103/PhysRevResearch.7.023118
@article{osti_2564503,
author = {Dalichaouch, T. N. and Xu, X. L. and Li, F. and Tsung, F. S. and Mori, W. B.},
title = {Fully plasma-based electron injector for a linear collider or XFEL},
annote = { 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 % . Published by the American Physical Society 2025 },
doi = {10.1103/PhysRevResearch.7.023118},
url = {https://www.osti.gov/biblio/2564503},
journal = {Physical Review Research},
issn = {ISSN 2643-1564},
number = {2},
volume = {7},
place = {United States},
publisher = {American Physical Society},
year = {2025},
month = {05}}
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 618, Issue 1-3https://doi.org/10.1016/j.nima.2010.02.274