Darmstadt 2016 – wissenschaftliches Programm
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AKBP: Arbeitskreis Beschleunigerphysik
AKBP 10: Beam Dynamics / Simulation II
AKBP 10.6: Vortrag
Mittwoch, 16. März 2016, 17:45–18:00, S1/05 122
Simulation studies of gas and plasma-based charge strippers — •Oliver Sebastian Haas1 and Oliver Boine-Frankenheim1,2 — 1Institut für Theorie Elektromagnetischer Felder, Darmstadt, Germany — 2GSI Helmholtz Centre for Heavy Ion Research, Darmstadt, Germany
Charge stripping of heavy ion beams at high intensities is a major challenge in current and future facilities with high intensity heavy ion beams. Conventional stripping techniques are limited in their applicability, e.g. solid carbon foils suffer from short lifetimes at high intensities and gas strippers usually achieve only low charge states. One possible alternative is the use of a plasma as a stripping medium. The presented work focuses on theoretical studies of the interaction of an heavy ion beam with a plasma and accompanying effects in possible charge strippers.
The main interest in the presented studies is the final charge state distribution of the ion beam. Different models for solving the corresponding rate equations were developed, taking into account ionization, recombination, energy loss and straggling processes. Sophisticated models, e.g. for ionization cross sections, as well as limits and applicability of simplified models are discussed. Quantitative results are presented in form an overview of the charge state distributions of different - conventional and novel - charge stripping media. Furthermore comparisons are done with charge state distributions of available experimental data. Typical practically relevant target conditions are discussed as well as deterioration of beam quality.