Coherent Terahertz synchrotron radiation mastered by controlling the irregular dynamics of relativistic electron bunches - CNRS - Centre national de la recherche scientifique Accéder directement au contenu
Article Dans Une Revue Nature Phys. Année : 2019

Coherent Terahertz synchrotron radiation mastered by controlling the irregular dynamics of relativistic electron bunches

Résumé

Relativistic electron bunches used in synchrotron light sources are complex media, in which patterns might form spontaneously. These spatial structures were studied over the past decades for very practical reasons. The patterns, which spontaneously appear during an instability, increase the terahertz radiation power by factors exceeding 10,000 1$^{,}$2 . However, their irregularity 1$^{–}$7 largely prevented applications of this powerful source. Here we show that principles from chaos control theory 8$^{–}$10 allow us to generate regular spatio-temporal patterns, stabilizing the emitted terahertz power. Regular unstable solutions are expected to coexist with the undesired irregular solutions, and may thus be controllable using feedback control. We demonstrate the stabilization of such regular solutions in the Synchrotron SOLEIL storage ring. Operation of these controlled unstable solutions enables new designs of high-charge and stable synchrotron radiation sources.

Dates et versions

hal-01921692 , version 1 (14-11-2018)

Identifiants

Citer

C. Evain, C. Szwaj, E. Roussel, J. Rodriguez, M. Le Parquier, et al.. Coherent Terahertz synchrotron radiation mastered by controlling the irregular dynamics of relativistic electron bunches. Nature Phys., 2019, 15, pp.635-639. ⟨10.1038/s41567-019-0488-6⟩. ⟨hal-01921692⟩
44 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More