Heidelberg 2022 – wissenschaftliches Programm

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SYMD: Symposium SMuK Dissertation Prize 2022

SYMD 1: Symposium SMuK Dissertation Prize 2022

SYMD 1.4: Hauptvortrag

Montag, 21. März 2022, 15:15–15:40, Audimax

Towards beam-quality-preserving plasma accelerators: On the precision tuning of the wakefield — •Sarah Schröder — Deutsches Elektronen-Synchrotron (DESY), Hamburg

Plasma wakefields enable record-setting GeV/m-level acceleration gradients, making them a promising avenue for reducing the size and associated costs of future particle accelerators - with potentially revolutionary implications for basic research and a wealth of industrial and medical applications. The control and optimisation of the acceleration process in the plasma is fundamentally linked to the ability to fine-tune the µ m-scale wakefield structure, calling for diagnostics with femtosecond resolution. In this contribution, a novel methodology that allows measurement [1] and tuning [2] of the plasma wakefields at the femtosecond level in a simple way is presented. These novel capabilities allowed the detailed structure of a GV/m-level wakefield acting on the electron bunch throughout the acceleration process to be directly measured for the first time [1] and ultimately fine-tuned such that the energy spread and charge of the bunch were preserved while achieving an energy-transfer efficiency of 42% [3]. These results mark a crucial step towards quality-preserving and efficient high-gradient acceleration - a necessary development to meet the continuous demand for ever-higher beam energies in high-energy particle physics.
[1] S. Schröder, et al. Nat. Commun. 11, 5984 (2020)
[2] S. Schröder et al., J. Phys.: Conf. Ser. 1596 012002 (2020)
[3] C.A. Lindstrøm, J.M. Garland, S. Schröder et al., Phys. Rev. Lett. 126, 014801 (2021)