München 2019 – wissenschaftliches Programm

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SYPA: Symposium Plasma-based Particle Accelerators

SYPA 1: Sympsium Plasma-based Particle Accelerators 1

SYPA 1.2: Hauptvortrag

Mittwoch, 20. März 2019, 14:30–15:00, Plenarsaal

Laser-driven electron acceleration in plasmas — •Jeroen van Tilborg — BELLA Center, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720

Laser plasma accelerators (LPAs) rely on the interaction of ultra-intense laser pulses (>10¹⁸ W/cm²) and underdense plasma targets (density ∼10¹⁶−10¹⁹ cm⁻³). The short-lived displacement of plasma electrons by the laser pulse results in a plasma wakefield co-propagating with the laser pulse, able to sustain acceleration gradients of order 100 GV/m in cm-scale plasma structures. Various injection schemes have been demonstrated to load background electrons into the wakefield, accelerating them to relativistic energies in well-directed beams.

In recent years, electron beams of several GeV have been demonstrated. The quality of the electron beams is being investigated with ever-advancing methods, targeting the beam emittance, charge, energy distribution, and bunch duration. Beams of sub-micron emittance, few-fs duration, with 10-100s of pC charge at GeV-level energies, all intrinsically locked to the femtosecond laser driver, are key LPA features. The availability of such beams has stimulated funding towards compact light source applications, advanced transport concepts, and high-field science experiments. I will present a general overview of LPAs, as well as highlight the compact light source efforts at the BELLA Center at LBNL.

Supported by: DOE Contract No. DE-AC02- 05CH11231 and the Gordon and Betty Moore Foundation Grant ID GBMF4898.