# Longitudinal phase-space manipulation with beam-driven plasma wakefields

## TL;DR

This paper introduces a novel method to manipulate the longitudinal phase-space of high-brightness electron beams using plasma wakefields, enabling precise control of beam correlations for advanced accelerator applications.

## Contribution

It presents an experimental demonstration of tunable phase-space manipulation via plasma wakefields, a new approach for beam shaping in plasma-based accelerators.

## Key findings

- Demonstrated tunable phase-space control by adjusting plasma density
- Showed ability to imprint or remove correlations in the beam
- Validated the method's potential for future plasma accelerators

## Abstract

The development of compact accelerator facilities providing high-brightness beams is one of the most challenging tasks in field of next-generation compact and cost affordable particle accelerators, to be used in many fields for industrial, medical and research applications. The ability to shape the beam longitudinal phase-space, in particular, plays a key role to achieve high-peak brightness. Here we present a new approach that allows to tune the longitudinal phase-space of a high-brightness beam by means of a plasma wakefields. The electron beam passing through the plasma drives large wakefields that are used to manipulate the time-energy correlation of particles along the beam itself. We experimentally demonstrate that such solution is highly tunable by simply adjusting the density of the plasma and can be used to imprint or remove any correlation onto the beam. This is a fundamental requirement when dealing with largely time-energy correlated beams coming from future plasma accelerators.