Mainz 2026 – wissenschaftliches Programm
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A: Fachverband Atomphysik
A 14: Poster – Precision Spectroscopy of Atoms and Ions (joint session A/Q)
A 14.19: Poster
Dienstag, 3. März 2026, 17:00–19:00, Philo 1. OG
Buffer-Gas Positron Source for Loading a Dual-Frequency Paul Trap — •Mohammadreza Nematollahi1,2,3, Vladimir Mikhailovskii1,2,3, Natalija Sheth1,2,3, Zhiheng Xue5, K. T Satyajith6, Christian Smorra2,7, Gunther Werth3, Hartmut Haffner4, Ferdinand Schmidt-Kaler3, Hendrik Bekker1,2,3, and Dmitry Budker1,2,3,4 — 1Helmholtz-Institut Mainz, 55128 Mainz, Germany — 2GSI Helmholtzzentrum fur Schwerionenforschung GmbH, 64291 Darmstadt, Germany — 3QUANTUM, Institut fur Physik, Johannes Gutenberg-Universitat, 55128, Mainz, Germany — 4Department of Physics, University of California, 94720-7300, Berkeley, USA — 5University of Science and Technology of China, Heifie, China — 6Delta Q, IMJ Institute of Research & Department of Physics — 7Heinrich Heine University Dusseldorf, 40225 Dusseldorf, Germany
A dual-frequency trap has been proposed for confining antimatter to enable high-precision measurements [1]. This system is intended to cotrap positrons and antiprotons to form antihydrogen. In this work, we present an approach for generating low-energy bunches of positrons and delivering them into the trap. We simulated positron deceleration and bunching in a buffer-gas trap under various conditions. Our presented trap design and performance are informed by these simulations. We furthermore discuss several prospective methods to inject the positrons into the Paul trap.
1. N. Leefer, et al. Hyperfine Interact 238, 12 (2017)
Keywords: Buffer gas Trap; Paul Trap; Positron Beam; Antiproton