title: Channeling chaos by building barriers.
abstract: Chaotic diffusion often represents a severe obstacle for the setup of experiments, e.g., in fusion plasmas or particle accelerators. We present a complete test of a method of control of Hamiltonian chaos, with both its numerical test and its first experimental realization on a paradigm for wave-particle interaction, i.e., a travelling wave tube. The core of our approach is a small apt modification of the system which channels chaos by building barriers to diffusion. Its experimental realization opens the possibility to practically achieve the control of a wide range of systems at a low additional cost of energy.
authors.affiliation: Centre de Physique Théorique-CNRS, Luminy-case 907, F-13288 Marseille cedex 9, France.
authors.forename: C
authors.initials: C
authors.lastname: Chandre
authors.forename: G
authors.initials: G
authors.lastname: Ciraolo
authors.forename: F
authors.initials: F
authors.lastname: Doveil
authors.forename: R
authors.initials: R
authors.lastname: Lima
authors.forename: A
authors.initials: A
authors.lastname: Macor
authors.forename: M
authors.initials: M
authors.lastname: Vittot