7th European Advanced Accelerator Conference

Resonant Excitation of Plasma Wakefields with a Train of Relativistic Particle Bunches

23 Sept 2025, 09:30

30m

Hotel Hermitage, La Biodola Bay, Isola d'Elba, Italy

Invited Talk Invited Talk Plenary Session

Speaker

Livio Verra (Istituto Nazionale di Fisica Nucleare)

Description

In the context of plasma wakefield acceleration, resonances can be exploited to generate large-amplitude wakefields, using a train of relativistic particle bunches with frequency content close to the plasma electron frequency, to accelerate a trailing bunch.
We show with experimental results and numerical simulations that the wakefields driven by individual successive bunches in overdense plasma superpose linearly, and that their amplitude increases along the train, under optimal coupling with plasma density oscillations. We also demonstrate that a train of bunches with increasing charge can be used to enhance the transformer ratio of the acceleration process, hence improving the energy transfer efficiency [1].

[1] L. Verra et al., submitted, https://doi.org/10.21203/rs.3.rs-6115160/v1

Presentation materials

EAAC_mubunch_Livio.pdf