Speaker
Prof.
JInqing Yu
Description
Developing an effective method for the injection and acceleration of positrons in plasma wakefield acceleration has been a persistent issue due to the lack of appropriate wakefield structure. We show that the plasma wakefield driven by a hollow proton beam forms an electron filament along the axis, thus providing the acceleration and focusing fields required by positrons. The evolution of the field can drive the injection of stationary positrons, while the stabilized field can effectively inject relativistic positrons. This work resolves significant challenges related to focusing, injection, and stable long-distance acceleration in positron acceleration, providing an effective scheme for realizing electron-positron collisions through PWFA.
