Positron acceleration via laser-augmented blowouts in two-column plasma structures

We propose a setup for positron acceleration consisting of an electron driver and a laser pulse creating a twofold plasma column structure. The resulting wakefield is capable of accelerating positron bunches over long distances even when the evolution of the driver is considered. The scheme is studied by means of particle-in-cell simulations. Further, the analytical expression for the accelerating and focusing fields are obtained, showing the equilibrium lines along which the witness bunch is accelerated.

Automated summary

This article proposes a setup for positron acceleration and studies its effectiveness through simulations. The results show that a twofold plasma column structure created by an electron driver and a laser pulse is capable of accelerating positron bunches over long distances.