Freiburg 2024 – scientific programme
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A: Fachverband Atomphysik
A 36: Highly Charged Ions and their Applications II
A 36.2: Talk
Friday, March 15, 2024, 11:30–11:45, HS 1010
Hyper-EBIT: The development of a source for very highly charged ions — •Athulya Kulangara Thottungal George, Matthew Bohman, Fabian Heisse, Charlotte Maria König, Jonathan Morgner, Kunal Singh, José Ramon Crespo López-Urrutia, Sven Sturm, and Klaus Blaum — Max-Planck-Institut für Kernphysik, Heidelberg
Precision tests of quantum electrodynamics (QED) in strong fields can be performed using highly charged ions (HCI). Here, only a few or even a single one of the innermost electrons are left, experiencing the strong fields originating from the nucleus. The Alphatrap experiment is a cryogenic Penning trap experiment which is dedicated to perform strong-field QED tests by measuring the bound electron magnetic moment (or g factor).
Recently, we have measured the bound electron g factor of hydrogen-like tin with Alphatrap to sub parts-per-billion precision. Our ultimate goal is to further advance such tests into the strongest fields by performing similar measurements on the heaviest HCI such as 208Pb81+. For the production of 208Pb81+ an electron beam ion trap called “Hyper-EBIT” is being constructed at the Max-Planck-Institut für Kernphysik with planned beam energies of 300 keV and up to 500 mA of beam currents. This contribution presents the recent developments of Hyper-EBIT.
Keywords: highly charged ions; quantum electrodynamics; electron beam ion trap; atomic physics