Mainz 2017 – wissenschaftliches Programm
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A: Fachverband Atomphysik
A 4: Precision Spectroscopy I
A 4.2: Vortrag
Montag, 6. März 2017, 15:00–15:15, N 3
A Laser Ion Source for the ALPHATRAP experiment — •Tim Sailer1,2, Ioanna Arapoglou1,2, Alexander Egl1,2, Martin Höcker1, Sandro Kraemer1,2, Andreas Weigel1,2, Robert Wolf1,3, Klaus Blaum1, and Sven Sturm1 — 1Max-Planck-Institut für Kernphysik, Heidelberg, Germany — 2Fakultät für Physik und Astronomie, Universität Heidelberg — 3ARC Centre of Excellence for Engineered Quantum Systems, School of Physics, The University of Sydney, NSW Australia
The Penning-trap experiment ALPHATRAP, located at the Max-Planck-Institut für Kernphysik, aims to measure the g-factor of bound electrons in highly charged ions up to hydrogen-like 208Pb81+. In the resulting electrical field strength of the order of 1016 V/cm bound-state quantum electrodynamics can be tested with highest precision in extreme conditions.
A Laser Ion Source (LIS) based on a pulsed Nd:YAG laser will be designed and built to produce 9Be1+ ions, which will subsequently be laser cooled inside the trap using a 313nm laser system. Highly charged ions, which cannot be directly addressed by the laser, will be sympathetically cooled by the beryllium ions. This will enable measurements beyond the current thermal limits. The LIS will be attached to the existing beamline, allowing the external production and insertion of the 9Be1+ ions into the trap as well as enabling easy adjustments such as target material switching for future uses.