@article{6515162f-c87f-473f-92ed-6d990901d756,
  abstract     = {{<p>For plasma-wakefield accelerators to fulfill their potential for cost effectiveness, it is essential that their energy-transfer efficiency be maximized. A key aspect of this efficiency is the near-complete transfer of energy, or depletion, from the driver electrons to the plasma wake. Achieving full depletion is limited by the process of re-acceleration, which occurs when the driver electrons decelerate to nonrelativistic energies, slipping backward into the accelerating phase of the wakefield and being subsequently re-accelerated. Such re-acceleration is unambiguously observed here for the first time. At this re-acceleration limit, we measure a beam driver depositing (57 ± 3)% of its energy into a 195-mm-long plasma. This suggests that the energy-transfer efficiency of plasma accelerators could approach that of conventional accelerators.</p>}},
  author       = {{Peña, F. and Lindstrøm, C. A. and Beinortaitė, J. and Björklund Svensson, J. and Boulton, L. and Diederichs, S. and Foster, B. and Garland, J. M. and González Caminal, P. and Loisch, G. and Schröder, S. and Thévenet, M. and Wesch, S. and Wood, J. C. and Osterhoff, J. and D'Arcy, R.}},
  issn         = {{2469-9888}},
  language     = {{eng}},
  number       = {{11}},
  publisher    = {{American Physical Society}},
  series       = {{Physical Review Accelerators and Beams}},
  title        = {{Energy depletion and re-acceleration of driver electrons in a plasma-wakefield accelerator}},
  url          = {{http://dx.doi.org/10.1103/PhysRevResearch.6.043090}},
  doi          = {{10.1103/PhysRevResearch.6.043090}},
  volume       = {{27}},
  year         = {{2024}},
}