Title :

From self-organization in relativistic electron bunches to coherent synchrotron light: observation using a photonic time-stretch digitizer

Author(s) :

Bielawski, Serge [Auteur]
Laboratoire de Physique des Lasers, Atomes et Molécules - UMR 8523 [PhLAM]
Blomley, Edmund [Auteur]
Brosi, Miriam [Auteur]
Bründermann, Erik [Auteur]
Burkard, Eva [Auteur]
Laboratoire de Physique des Lasers, Atomes et Molécules - UMR 8523 [PhLAM]
Evain, Clément [Auteur]
Laboratoire de Physique des Lasers, Atomes et Molécules - UMR 8523 [PhLAM]
Funkner, Stefan [Auteur]
Hiller, Nicole [Auteur]
Nasse, Michael J. [Auteur]
Niehues, Gudrun [Auteur]
Roussel, Eléonore [Auteur]
Laboratoire de Physique des Lasers, Atomes et Molécules - UMR 8523 [PhLAM]
Schedler, Manuel [Auteur]
Schönfeldt, Patrik [Auteur]
Steinmann, Johannes L. [Auteur]
Szwaj, Christophe [Auteur]
Laboratoire de Physique des Lasers, Atomes et Molécules - UMR 8523 [PhLAM]
Walther, Sophie [Auteur]
Müller, Anke-Susanne [Auteur]

Journal title :

SCIENTIFIC REPORTS

Publisher :

Nature Publishing Group

Publication date :

2019

ISSN :

2045-2322

HAL domain(s) :

Physique [physics]/Physique [physics]/Physique des accélérateurs [physics.acc-ph]
Physique [physics]/Physique mathématique [math-ph]
Physique [physics]/Physique [physics]/Physique Générale [physics.gen-ph]

English abstract : [en]

In recent and future synchrotron radiation facilities, relativistic electron bunches with increasingly high charge density are needed for producing brilliant light at various wavelengths, from X-rays to terahertz. In such ...
Show more >In recent and future synchrotron radiation facilities, relativistic electron bunches with increasingly high charge density are needed for producing brilliant light at various wavelengths, from X-rays to terahertz. In such conditions, interaction of electron bunches with their own emitted electromagnetic fields leads to instabilities and spontaneous formation of complex spatial structures. Understanding these instabilities is therefore key in most electron accelerators. However, investigations suffer from the lack of non-destructive recording tools for electron bunch shapes. In storage rings, most studies thus focus on the resulting emitted radiation. Here, we present measurements of the electric field in the immediate vicinity of the electron bunch in a storage ring, over many turns. For recording the ultrafast electric field, we designed a photonic time-stretch analog-to-digital converter with terasamples/second acquisition rate. We could thus observe the predicted link between spontaneous pattern formation and giant bursts of coherent synchrotron radiation in a storage ring.Show less >

Language :

Anglais

Popular science :

Non

ANR Project :

Centre Européen pour les Mathématiques, la Physique et leurs Interactions

Collections :

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

Source :

Harvested from HAL