Speaker
Description
Plasma-based accelerators have attracted significant interest in XFEL and linear collider applications due to the high quality, multi-GeV electron beams they can produce. Through particle-in-cell simulations, we demonstrate a plasma-based injector concept to generate 80+ GeV electron beams with nC-level charge, sub-percent energy spreads and high brightness > 10^19 A/m^2/rad^2. This concept relies on self-focusing of an electron driver beam to facilitate wake expansion and self-injection in the plasma. However, the same ideas can be applied to self-injection from other expanding bubble concepts such as density downramp injection. The results improve upon previous work [1] by shaping the drive bunch and scaling its charge and energy for high transformer ratio acceleration (R > 2). Electron beams produced using this approach may be suitable for use in the electron arm of a future linear collider or Higgs Factory.
This work was supported by US DOE grants No. DE-SC0010064 and DE-SC0025612.
[1] T. N. Dalichaouch, et al., PRR. 7, 023118 (2025).
| Working group | WG3 |
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