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Abstract

Alphatrap is a Penning-trap experiment aiming for the test of bound-state quantum electrodynamics (QED) by measuring the g-factor of electrons bound in highly charged ions up to hydrogen-like ²⁰⁸Pb⁸¹⁺. The high atomic number Z allows a test of boundstate QED under highest field strengths. Cold ions are necessary for high-precision measurements revealing the small additional effect of QED. As a novel development, laser cooling of beryllium ions will be used to sympathetically cool highly charged ions. The lower achievable temperatures are expected to further increase the precision of the measurement. Additionally, new measurement schemes such as simultaneous g-factor measurements on Coulomb crystallized ion pairs become feasible. In the context of this thesis, a concept for implementation of laser cooling at the Alphatrap experiment using 313nm light was developed. The experiment specific requirements on laser cooling in a Penning trap and sympathetic cooling are discussed and the results of the commissioning of the laser system are presented.