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SAMOP 2021 – scientific programme

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MS: Fachverband Massenspektrometrie

MS 1: Precision Mass Measurements I

MS 1.3: Talk

Monday, September 20, 2021, 11:30–11:45, H3

The transportable antiproton trap BASE-STEP — •Christian Smorra1, Fatma Abbass1, Matthew Bohman2,3, Daniel Popper1, Ron Moller1, Markus Wiesinger2,3, Christian Will2,3, Jack Devlin2,4, Stefan Erlewein2,4, Markus Fleck2,5, Julia Jaeger2,3, Barbara Latacz2, Peter Micke2,4, Elise Wursten2,4, Klaus Blaum3, Yasuyuki Matsuda5, Christian Ospelkaus6,7, Wolfgang Quint8, Anna Soter9, Jochen Walz1,10, Yasunori Yamazaki2, and Stefan Ulmer21Johannes Gutenberg-Universität, Mainz, Germany — 2RIKEN, Wako-shi, Japan — 3Max-Planck-Institute for Nuclear Physics, Heidelberg, Germany — 4CERN, Geneva, Switzerland — 5University of Tokyo, Japan — 6Leibniz Universität Hannover, Germany — 7PTB Braunschweig, Germany — 8GSI, Darmstadt, Germany — 9ETH Zürich, Switzerland — 10Helmholtz Institute Mainz, Germany

High-precision comparisons of the proton's and antiproton's charge-to-mass ratios and magnetic moments constitute stringent tests of CPT invariance, one of the cornerstones in the Standard Model of particle physics. The BASE collaboration has advanced these tests by precision measurements on single trapped antiprotons in a multi-Penning trap system in the antiproton decelerator hall at CERN, where magnetic field noise from the facility operation have become a major concern. To further advance the precision, we have designed the transportable antiproton trap BASE-STEP to relocate antiproton precision measurements into other laboratories. I will present a design report and the status of the project.

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