SAMOP 2021 – wissenschaftliches Programm
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A: Fachverband Atomphysik
A 2: Precision spectroscopy of atoms and ions (joint session A/Q)
A 2.14: Poster
Montag, 20. September 2021, 16:30–18:30, P
A cryogenic Penning trap system for sympathetic laser cooling of atomic ions and protons — •Julia-Aileen Coenders1, Johannes Mielke1, Teresa Meiners1, Malte Niemann1, Amado Bautista-Salvador2, Ralf Lehnert3, Juan Manuel Cornejo1, Stefan Ulmer4, and Christian Ospelkaus1,2 — 1Institut für Quantenoptik, Leibniz Universität Hannover, Welfengarten 1, 30167 Hannover, Germany — 2Physikalisch-Technische Bundesanstalt, Bundesallee 100, 38116 Braunschweig, Germany — 3Indiana University Center for Spacetime Symmetries, Bloomington, IN 47405, USA — 4Ulmer Fundamental Symmetries Laboratiory, RIKEN, Wako, Saitama 351-0198, Japan
High precision measurements of the fundamental properties of protons and antiprotons carried out within the BASE collaboration serve as tests of CPT invariance in the baryon sector. However, present experiments fight against systematic uncertainties depending on the motional amplitude of the particle. To this end, experimental schemes based on sympathetic cooling of single (anti-)protons through co-trapped laser cooled atomic ions can contribute to the ongoing strive for improved precision through fast preparation times and low particle temperatures.
Here we present a cryogenic Penning trap system for free space coupling of two particles via Coulomb interaction in an engineered double-well potential. We report on recent results of thermometry measurements with 9Be+ ions and sideband cooling of the same. Prospects for sympathetic cooling of protons in a micro-coupling trap will be discussed.