Titre :

Gain Switching of the Microbunching Instability to Produce Giant Bursts of Terahertz Coherent Synchrotron Radiation

Auteur(s) :

Evain, C [Auteur]
Laboratoire de Physique des Lasers, Atomes et Molécules - UMR 8523 [PhLAM]
Roussel, E [Auteur]
Laboratoire de Physique des Lasers, Atomes et Molécules - UMR 8523 [PhLAM]
Bielawski, S [Auteur]
Laboratoire de Physique des Lasers, Atomes et Molécules - UMR 8523 [PhLAM]
Tordeux, M.-A [Auteur]
Synchrotron SOLEIL [SSOLEIL]
Ribeiro, F [Auteur]
Synchrotron SOLEIL [SSOLEIL]
Labat, M [Auteur]
Synchrotron SOLEIL [SSOLEIL]
Hubert, N [Auteur]
Synchrotron SOLEIL [SSOLEIL]
Brubach, J.-B [Auteur]
Synchrotron SOLEIL [SSOLEIL]
Roy, P [Auteur]
Synchrotron SOLEIL [SSOLEIL]
Szwaj, C [Auteur]
Laboratoire de Physique des Lasers, Atomes et Molécules - UMR 8523 [PhLAM]

Titre de la revue :

Phys.Rev.Lett.

Pagination :

145001

Date de publication :

2024

Discipline(s) HAL :

Physique [physics]/Physique [physics]/Physique des accélérateurs [physics.acc-ph]

Résumé en anglais : [en]

Relativistic electron bunches used to produce synchrotron radiation are systematically subjected to spontaneous appearance of microstructures, when a high number of electrons are used. In storage rings, this usually leads ...
Lire la suite >Relativistic electron bunches used to produce synchrotron radiation are systematically subjected to spontaneous appearance of microstructures, when a high number of electrons are used. In storage rings, this usually leads to an intense coherent emission in the terahetz range, with powers that are orders of magnitude higher than standard incoherent emission. However this emission generally displays an erratic behavior, which has strongly limited its domain of application so far. In this Letter—inspired by the process of gain switching in lasers—we present a new method for controlling the electron bunch dynamics during this instability. We show that it is possible to trigger the formation of the microstructures in the bunch, and also to considerably enhance the peak power of the coherent terahertz bursts. The experimental demonstration of this scheme—based on the modulation of a rf-cavity signal—is performed at the SOLEIL facility.Lire moins >

Langue :

Anglais

Comité de lecture :

Oui

Audience :

Internationale

Vulgarisation :

Non

Collections :

• Laboratoire de Physique des Lasers, Atomes et Molécules (PhLAM) - UMR 8523

Source :

Harvested from HAL