Freiburg 2024 – wissenschaftliches Programm

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A: Fachverband Atomphysik

A 33: Poster VI

A 33.15: Poster

Donnerstag, 14. März 2024, 17:00–19:00, Tent A

The LSYM experiment — •Andreas Thoma, Daniel Rubin, Lukas Holtmann, Fabian Raab, Maria Pasinetti, Sangeetha Sasidharan, and Sven Sturm — Max Planck Institut für Kernphysik

One of the currently most important and unsolved questions in physics is the unbalance in quantity of matter and antimatter in the universe, which is in contradiction to Quantum Electrodynamics (QED), the most successful quantum field theory in the Standard Model.

LSym is a cryogenic Penning trap experiment being developed to measure mass, charge and g-factor of positrons and electrons at a precision of 10e-14 magnitude, that could possibly falsify CPT symmetry.

To achieve such accuracy the particles have to be cooled down to 300mK to ensure finding the positron in the ground state where spin-flips can be accessed via excitations of the Larmor mode.

Here, the experimental setup and methods as well as challenges of cooling to cryogenic temperatures will be presented.

Keywords: QED; Penning Trap; CPT; Standard Model; cryogenic