Dresden 2020 – wissenschaftliches Programm

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AKBP: Arbeitskreis Beschleunigerphysik

AKBP 6: New Accelerator Concepts

AKBP 6.1: Vortrag

Dienstag, 17. März 2020, 09:30–10:00, HSZ 301

Photonic particle acceleration: from advanced electron phase space control to attosecond electron pulse train generation — •Alexander Tafel1, Norbert Schönenberger1, Johannes Illmer1, Anna Mittelbach1, Ang Li1, Roy Shiloh1, Yuya Morimoto1, Peyman Yousefi1, Stefanie Kraus1, Leon Brückner1, Uwe Niedermayer2, Peter Hommelhoff1, and ACHIP Collaboration31Department Physik, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), 91058 Erlangen — 2Technische Universität Darmstadt, 64289 Darmstadt — 3achip.fau.de, achip.stanford.edu

The combination of high damage threshold dielectrics, high repetition rate femtosecond lasers and the nanofabrication capabilities of today enable the realization of an all-optical miniaturized particle accelerator on a chip. While the miniaturization is one of the biggest benefits, it is also one of the key challenges, which comes along with the micrometer wavelength of the driving laser pulses: we need to control the 6D electron phase space on the nanometer, milliradian and attosecond level. Here we report on how we use optical near-fields of tailored photonic nanostructures to manipulate both the transverse and the longitudinal phase space of the electron beam, which has recently enabled us to generate attosecond bunch trains and to confine the electron beam over long distances by virtue of alternating phase focusing. All of this brings us close to building the accelerator on a photonic chip. We will give an overview over the current state of the art and the upcoming challenges.

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