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A: Fachverband Atomphysik
A 14: Poster Session - Atomic Physics II
A 14.14: Poster
Dienstag, 10. März 2020, 16:00–18:00, Empore Lichthof
Towards sympathetic cooling of single (anti-)protons — •Teresa Meiners1, Johannes Mielke1, Matthias Borchert1,3, Frederik Jacobs1, Julian Pick1, Amado Bautista-Salvador2, Juan Manuel Cornejo1, Ralf Lehnert1,4, Malte Niemann1, Stefan Ulmer3, and Christian Ospelkaus1,2 — 1Institut für Quantenoptik, Leibniz Universität Hannover, Welfengarten 1, 30167 Hannover, Germany — 2Physikalisch-Technische Bundesanstalt, Bundesallee 100, 38116 Braunschweig, Germany — 3Ulmer Fundamental Symmetries Laboratiory, RIKEN, Wako, Saitama 351-0198, Japan — 4Indiana University Center for Spacetime Symmetries, Bloomington, IN 47405, USA
The aim of the BASE collaboration is to test fundamental physics by performing precision measurements on single (anti-)protons, such as g-factor comparisons, for a stringent test of CPT invariance with baryons. The state-of-the-art measurements are performed in cylindrical Penning traps using resistive cooling and image current detection. Sympathetically cooling the (anti-)proton using a co-trapped atomic ion would significantly decrease preparation times and therefore considerably increase the sampling rate of the experiment (which would allow measurements at considerably improved precision).
We develop concepts for sympathetic cooling of single protons using a laser cooled 9Be+ ion within the BASE collaboration. We present our recently upgraded apparatus including Penning traps for production, cooling, transport, and detection of 9Be+ ions and protons as well as a trap for motional coupling of these two ion species.