1. Unveiling relativistic electron bunch microstructures and their dynamical evolutions, using photonic time-stretch
- Author
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Patrik Schönfeldt, L. Cassinari, Marie-Emmanuelle Couprie, J. P. Ricaud, Jean-Blaise Brubach, C. Szwaj, Johannes Steinmann, Laurent Manceron, Marie-Agnès Tordeux, Pascale Roy, Clement Evain, Marc Le Parquier, Anke-Susanne Müller, Nicole Hiller, Serge Bielawski, Eléonore Roussel, Marie Labat, and Andrii Borysenko
- Subjects
Physics ,010308 nuclear & particles physics ,business.industry ,Terahertz radiation ,Resolution (electron density) ,Synchrotron radiation ,Near and far field ,Electron ,01 natural sciences ,Optics ,Beamline ,Picosecond ,0103 physical sciences ,Physics::Accelerator Physics ,Photonics ,010306 general physics ,business - Abstract
The photonic time-stretch technique allows electric field pulse shapes to be recorded with picosecond resolution, at megahertz acquisition rates. Using this strategy, we could directly record spatial patterns that spontaneously appear in relativistic electron bunches, and follow their dynamical evolution over time. We present recent results obtained using two strategies. At SOLEIL, we present the shapes of the THz pulses which are emitted by the structures, and detected far from the emission point, at the end of a beamline. At ANKA, we present how it has been possible to monitor directly the electron bunch near-field. These new types of single-shot recordings allow direct and stringent tests to be performed on electron bunch dynamical models in synchrotron radiation facilities.
- Published
- 2017
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