SAMOP 2023 – wissenschaftliches Programm

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A: Fachverband Atomphysik

A 33: Precision Spectroscopy of Atoms and Ions V (joint session A/Q)

A 33.3: Vortrag

Freitag, 10. März 2023, 15:00–15:15, B302

BASE-STEP and the Permanent Magnet Trap — •Daniel Popper¹, Fatma Abbass¹, Hüseyin Yildiz¹, Markus Wiesinger⁴, Christian Will⁴, Björn-Benny Bauer^1,2, Jack Devlin^2,3, Stefan Erlewein^2,4, Julia Jäger^2,4,6, Barbara Latacz^2,3, Peter Micke^3,4, Elise Wursten³, Gilbertas Umbrazunas^2,9, Klaus Blaum⁴, Christian Ospelkaus^5,6, Wolfgang Quint⁷, Jochen Walz^1,8, Stefan Ulmer^2,10, Christian Smorra¹, and Matthew Bohman^2,4 — ¹JGU Mainz, Germany — ²Fundamental Symmetries Laboratory, RIKEN, Wako-shi, Japan — ³CERN, Geneva, Switzerland — ⁴MPI for Nuclear Physics, Heidelberg, Germany — ⁵Leibniz Universität Hannover, Germany — ⁶Physikalisch Technische Bundesanstalt, Braunschweig, Germany — ⁷GSI, Darmstadt, Germany — ⁸Helmholtz Intitute Mainz, Germany — ⁹ETH Zürich, Switzerland — ¹⁰Heinrich-Heine-Universität Düsseldorf, Germany

The ERC Project BASE-STEP is dedicated to the development of transportable antiproton traps to enhance the sensitivity of CPT invariance tests with antiprotons that are conducted in the BASE collaboration. For this, STEP uses a transportable superconducting magnet with a Penning trap system on a portable experiment frame. We have started commissioning the setup at CERN, and successfully tested our 90^∘ defelctor at the end of 2022. In addition, we designed a permanent magnet set-up, consisting of two aubert- magnets that was conceived as an alternative to a superconducting magnet in the STEP concept that is more compact. Within the comissioning of the permanent magnet trap We succeeded in detecting He⁺ ions in EBIT operation.