Hannover 2016 – scientific programme
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A: Fachverband Atomphysik
A 40: Precision spectroscopy of atoms and ions III (with Q)
A 40.5: Talk
Friday, March 4, 2016, 12:00–12:15, f428
The ALPHATRAP double Penning-trap experiment — •Ioanna Arapoglou1,2, Alexander Egl1,2, Henrik Hirzler1,2, Sandro Kraemer1,2, Tim Sailer1,2, Andreas Weigel1,2, 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 experiment, being a follow-up of the g-factor experiment at Mainz, aims for high-precision tests of bound-state quantum electrodynamics in electric fields with strengths in the order of 1016 V/cm. These fields are provided by heavy highly charged ions, such as hydrogen-like 208Pb81+. Furthermore, via the high-precision determination of the bound electron g-factor, fundamental constants such as the fine-structure constant α can be determined. The Heidelberg Electron-Beam Ion Trap delivers the desired heavy highly charged ions, which are injected into and manipulated by means of the ALPHATRAP cryogenic double Penning-trap system. The latter is optimised for heavy highly charged ions and consists of a 7-pole and a 5-pole cylindrical Penning trap that are used for high-precision measurements and spin orientation detection, respectively. This configuration together with the measurement principle and the current status of the experiment will be presented.