---
abstract: '`[A numerical and experimental study of a control method aimed at channeling chaos by building barriers in phase space is performed on a paradigm for wave-particle interaction, i.e., a traveling wave tube. Control of chaotic diffusion is achieved by adding small apt modifications to the system with a low additional cost of energy. This modification is realized experimentally through additional waves with small amplitudes. Robustness of the method is investigated both numerically and experimentally.]`'
author:
- 'A. Macor'
- 'F. Doveil'
- 'C. Chandre'
- 'G. Ciraolo'
- 'R.Lima'
- 'M. Vittot'
title: 'Channeling chaotic transport in a wave-particle experiment'
---

Introduction
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The interaction of a beam of charged particles with electromagnetic waves is ubiquitous in physics, and it is central to many useful devices such as particle accelerators, plasma fusion experiments or free electron lasers. In these experimental set-ups, the waves are used to accelerate the particles or to guide them by assigning a specific mean trajectory. However, the dynamics of these systems is usually characterized by the competition of many degrees of freedom and thus, shows generically chaotic behaviors. Such behaviors represent a limit to the achievement of high performances in these devices. Consequently, there 