Köln 2025 – scientific programme
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MS: Fachverband Massenspektrometrie
MS 2: New Methods, Technical Development I
MS 2.4: Talk
Monday, March 10, 2025, 17:45–18:00, HS 2 Chemie
Simulations of ion transport at the high-density RF Carpet for the Cryogenic Stopping Cell of the Super-FRS — •Nils Steinbrenner1, Daler Amanbayev1,2, Timo Dickel1,2, and Wolfgang R. Plaß1,2 — 1II. Physikalisches Institut, Justus-Liebig Universität, Gießen, Deutschland — 2GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt, Deutschland
In the context of the Super-FRS at FAIR, the Cryogenic Stopping Cell (CSC) is responsible for decelerating and stopping exotic ion beams produced at relativistic energies. The CSC’s design is constrained by the need to achieve exceptionally high areal gas densities, up to 40 mg/cm2, which presents significant challenges in ion extraction. The RF carpet, a critical component in this process, experiences decreased efficiency in ion capture and transport at high gas densities. To optimize the RF carpet’s performance, detailed ion trajectory simulations were conducted. This contribution presents recent investigations into various RF-carpet geometries and explores the influence of the gap-to-electrode ratio on ion transport efficiency, with the ultimate goal of enhancing the RF carpets functionality for future CSC configurations.
Keywords: Ion Trajectory Simulations; Cryogenic Stopping Cell; RF Carpet