Experimental and theoretical progress on spin-polarized beams at FZJ/HHU
by ,
Tsung-Dao Lee Institute/N6F-N601 - Meeting Room
Tsung-Dao Lee Institute
Host: Longqing Yi
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Abstract:
Spin-polarized electron beams are essential tools for probing fundamental physics, ranging from deep-inelastic scattering studies of the proton structure to prospective searches for axion-like particles. Polarization effects are also expected to be of importance in nuclear fusion, where the use of polarized reactants may increase the cross section by 50%. In recent years, the plasma-based acceleration of spin-polarized particle beams has attracted growing interest [1].
In this presentation, we report on recent experimental and theoretical advances in polarized electron and ion beam research at Forschungszentrum Jülich and Heinrich Heine University Düsseldorf. This includes the first proof-of-principle experiment on polarized ion acceleration [2] as well as several particle-in-cell studies on optimized setups that could provide high energy, high-polarization beams [3]. Moreover, we discuss present limitations in the target design for commonly proposed hydrogen halide sources of polarized beams [4].
[1] L. Reichwein et al., Rep. Prog. Phys. 88, 117001 (2025)
[2] C. Zheng et al., arXiv:2310.04184v2 (2024)
[3] L. Reichwein et al., arXiv:2505.05337 (2025)
[4] D. Sofikitis et al., Phys. Rev. A 111, 053119 (2025)
Biography:
Prof. Markus Büscher has worked many years in the field of experimental hadron physics. He is now head of a research group that investigates spin effects in plasmas and their possible applications, like generation of polarized beams and polarized fusion. He has become a world leading expert in the field and is co-author of two related review articles. As such he is participating in the European and US strategy processes aiming at the construction of next generation’s particle accelerators.
Dr. Lars Reichwein got his PHD in Heinrich-Heine University Dusseldorf in 2022, he then worked with Prof. Alexander Pukhov as a postdoc for 3 years. Since 2025, he is working in the group of Prof. Markus Büscher at FZJ. His research focuses on strong-field QED and spin-polarized particle acceleration in plasmas.
