Dresden 2017 – wissenschaftliches Programm

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AKBP: Arbeitskreis Beschleunigerphysik

AKBP 2: New Accelerator Concepts II

AKBP 2.4: Vortrag

Dienstag, 21. März 2017, 10:15–10:30, MOL 213

Staged acceleration, microbunching, and focusing in a dielectric laser accelerator — •Joshua McNeur, Martin Kozak, Norbert Schönenberger, Ang Li, Peyman Yousefi, Anna Mittelbach, and Peter Hommelhoff — Department Physik, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Erlangen

Dielectric laser accelerators (DLAs) form a class of novel accelerators that enables a variety of exciting applications, ranging from MeV handheld electron sources to table-top coherent x-ray sources[1]. They operate via the synchronous interaction of electrons traversing the laser-induced near-fields at dielectric nanostructures. Recently, DLAs have demonstrated acceleration gradients approaching and exceeding 1 GeV/m with a variety of dielectric materials, laser wavelengths, and nanostructure geometries [2,3,4]. Realizing the above applications, however, requires extending the interaction length between electrons and the laser induced fields via phase-controlled staging. Furthermore, the restrictive longitudinal and transverse acceptance of the nanostructures necessitates microbunching and focusing the electron beam, preferably on a similarly-miniaturized scale. Here, we report on experimental demonstration of DLA-based staging and focusing [5] and on efforts to realize a DLA-based microbunching scheme. roaches for addressing these challenges are discussed.

1. England, R. J.et al., Rev.Mod. Phys. 86, 1337 (2014).

2. Leedle, K. J. et al., Opt. Lett.40, 4344-4347 (2015).

3. McNeur, J et al.,arXiv:1604.07684 [accelerator physics] (2016).