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A: Fachverband Atomphysik

A 20: Poster Session I

A 20.35: Poster

Dienstag, 7. März 2017, 17:00–19:00, P OG1

The ALPHATRAP Double Penning-Trap Experiment — •Ioanna Arapoglou^1,2, Alexander Egl^1,2, Martin Höcker¹, Sandro Kraemer^1,2, Tim Sailer^1,2, Andreas Weigel^1,2, José Ramón Crespo López-Urrutia¹, Robert Wolf¹, Sven Sturm¹, and Klaus Blaum¹ — ¹Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg — ²Fakultät für Physik und Astronomie, Universität Heidelberg

The ALPHATRAP double Penning-trap apparatus is a high-precision experiment that aims for the most stringent test of bound state quantum electrodynamics (BS-QED) in the strong field regime of 10¹⁶ V/cm. These fields are provided by the nucleus of a heavy highly charged ion (HCI), such as hydrogen-like ²⁰⁸Pb⁸¹⁺. Determining the g-factor of the bound electron to the desired precision not only creates the means required for high-precision tests of BS-QED but also enables the determination of fundamental constants such as the fine structure constant α. The setup includes several ion creation possibilities for offline ion production, complementary to the online injection of heavy HCI from the Heidelberg Electron Beam Ion Trap. The latter is coupled, via an ion beam-line, to the cryogenic double Penning-trap system which consists of the so called Precision Trap for high-precision measurements in a homogeneous magnetic field and the Analysis Trap for spin state determination in a magnetic bottle configuration. The setup as well as the current status of the experiment will be presented.