SAMOP 2023 – wissenschaftliches Programm
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A: Fachverband Atomphysik
A 27: Poster III
A 27.4: Poster
Donnerstag, 9. März 2023, 16:30–19:00, Empore Lichthof
A laser system setup for production and cooling of 9Be+ in a cryogenic Penning trap for precision measurements with (anti-)protons — •Jan Schaper1, Julia Coenders1, Juan Manuel Cornejo1, Stefan Ulmer3,4, and Christian Ospelkaus1,2 — 1Leibniz Universität Hannover, Germany — 2Physikalisch-Technische Bundesanstalt, Braunschweig, Germany — 3Ulmer Fundamental Symmetries Laboratory, Riken, Japan — 4Heinrich-Heine-Universität Düsseldorf, Germany
The BASE collaboration has extensively contributed to high precision CPT symmetry tests on protons and antiprotons by measuring their charge-to-mass ratio and g-factor in a Penning trap at cryogenic temperatures [1-3]. At BASE Hannover we are developing new approaches for cooling and detection of these particles through laser cooling and methods of quantum logic schemes [4]. Since (anti-)protons cannot be directly addressed with laser light, single laser-cooled 9Be+ ions will be used for sympathetic cooling of single (anti-)protons in a double well potential. In this poster, new developments of the experimental setup will be introduced. The implementation of a dedicated photoionization laser that enables quick loading of a single 9Be+ ion into the trap will be shown. In addition, a dedicated laser setup for axial cooling of 9Be+ will be presented.
[1] G. Schneider et al., Science 358, 1081 (2017) [2] C. Smorra et al., Nature 550, 371 (2017) [3] M.J. Borchert et al., Nature 601, 53 (2022) [4] M Niemann et al 2020 Meas. Sci. Technol. 31 035003