Short-range wakefields generated in the blowout regime of plasma-wakefield acceleration

Abstract

In the past, calculation of wakefields generated by an electron bunch propagating in a plasma has been carried out in linear approximation, where the plasma perturbation can be assumed small and plasma equations of motion linearized. This approximation breaks down in the blowout regime where a high-density electron driver expels plasma electrons from its path and creates a cavity void of electrons in its wake. In this paper, we develop a technique that allows to calculate short-range longitudinal and transverse wakes generated by a witness bunch being accelerated inside the cavity. Our results can be used for studies of the beam loading and the hosing instability of the witness bunch in PWFA and LWFA.

References in corpus (2)

• Wake excited in plasma by an ultra-relativistic point-like bunch
• Instability of a witness bunch in a plasma bubble

Cited by in corpus (6)

• Staging of High-Gradient Wakefield Accelerators
• Plasma Wakefield Linear Colliders - Opportunities and Challenges
• Flat bubble regime and laminar plasma flow in a plasma wake field accelerator
• On "Efficiency versus Instability in plasma accelerators"
• Analytical theory of the skewed wake effect
• Effects of the transversely nonuniform plasma density in a blowout regime of a plasma wakefield accelerator