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PreprintCC BY 4.0arXiv

Limits on energy recovery for positron acceleration in a warm plasma column

  • Max Varverakis
  • Spencer Gessner
  • Severin Diederichs
  • Carl A. Lindstrøm
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Abstract

Beam-driven plasma wakefield acceleration (PWFA) is a promising candidate for realizing a future linear collider, owing to the extremely high field gradients that are produced in plasmas. Despite recent success in high-gradient and high-efficiency electron PWFA, efficient positron PWFA remains a challenge. The warm plasma column regime offers stable, high-quality acceleration of positron beams in a plasma electron filament, albeit at low energy-transfer efficiencies. We explore the possibility of employing an electron energy recovery beam to extract residual energy from the plasma wakefield and increase the efficiency of this scheme. Our particle-in-cell simulations reveal that certain mechanisms, including higher-order ionization and ion motion, limit our ability to further extract energy from the plasma wakefield.

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Cite

BibTeXRIS
BibTeX
@misc{varverakis2026limits,
  title = {{Limits on energy recovery for positron acceleration in a warm plasma column}},
  author = {Max Varverakis and Spencer Gessner and Severin Diederichs and Carl A. Lindstrøm},
  howpublished = {arXiv},
  year = {2026},
  month = oct,
  doi = {10.48550/arxiv.2610.07322},
  eprint = {2610.07322},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2610.07322},
  note = {CC BY 4.0},
}
RIS
TY  - UNPB
TI  - Limits on energy recovery for positron acceleration in a warm plasma column
AU  - Max Varverakis
AU  - Spencer Gessner
AU  - Severin Diederichs
AU  - Carl A. Lindstrøm
PY  - 2026
DA  - 2026/10/05
PB  - arXiv
DO  - 10.48550/arxiv.2610.07322
UR  - https://arxiv.org/abs/2610.07322
AB  - Beam-driven plasma wakefield acceleration (PWFA) is a promising candidate for realizing a future linear collider, owing to the extremely high field gradients that are produced in plasmas. Despite recent success in high-gradient and high-efficiency electron PWFA, efficient positron PWFA remains a challenge. The warm plasma column regime offers stable, high-quality acceleration of positron beams in a plasma electron filament, albeit at low energy-transfer efficiencies. We explore the possibility of employing an electron energy recovery beam to extract residual energy from the plasma wakefield and increase the efficiency of this scheme. Our particle-in-cell simulations reveal that certain mechanisms, including higher-order ionization and ion motion, limit our ability to further extract energy from the plasma wakefield.
ER  -