Wuppertal 2015 – scientific programme
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AKBP: Arbeitskreis Beschleunigerphysik
AKBP 13: Beam Dynamics / Simulation II
AKBP 13.2: Talk
Thursday, March 12, 2015, 14:00–14:15, F.10.01 (HS 4)
Simulation studies of plasma-based charge strippers for heavy ion beams — •Oliver Sebastian Haas1 and Oliver Boine-Frankenheim1,2 — 1TU-Darmstadt, Darmstadt, Deutschland — 2GSI, Darmstadt, Deutschland
Charge stripping of intense heavy ion beams is a major challenge in current and future linear heavy ion accelerators. Conventional stripping techniques are limited in their applicability, e.g. solid carbon foils suffer from short lifetimes at high intensities. One possible alternative is the use of a plasma as a stripping medium, which the presented work focuses on. The main goal of the studies is the prediction of the final charge state distribution of the ion beam. Rate equations were implemented numerically, taking into account different models for ionization, recombination and energy loss processes. The limits and applicability of simplified models, e.g. for ionization cross sections, are discussed. First quantitative results are presented in form of an overview of the charge state distributions of different - conventional and novel - charge stripping media. Furthermore comparisons are performed with charge state distributions obtained from different pinch experiments at GSI. Future studies intend to include detailed models for the plasma conditions and beam optics. This includes, e.g., the implosions process of pinch plasmas and the detailed plasma parameters along the beam axis.