Berlin 2014 – scientific programme
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MS: Fachverband Massenspektrometrie
MS 6: Poster
MS 6.8: Poster
Wednesday, March 19, 2014, 14:00–14:00, DO24 Foyer
FRS Ion Catcher: Ion Survival Efficiency of Radioactive Ions — •Timo Dickel1,2, Emma Haettner1, Fabian Heisse3, Sivaij Purushothaman1, Moritz Pascal Reiter2, and The FRS Ion Catcher Collaboration1 — 1GSI Darmstadt — 2Justus-Liebig-Universität — 3TU Dresden
At the MATS and LaSpec experiments of the LEB of the Super-FRS, high precision experiments will be done with low-energy exotic nuclei. To reach out to the most exotic nuclei, high efficiencies in the thermalization and beam preparation (e.g., separation and identification) are of upmost importance. Therefore, these parameters are optimized and tested online with the of the FRS Ion Catcher facility and in a separate off-line experiment. An in depth study of ion survival efficiencies has been performed to characterize the cryogenic stopping cell, to understand the slowing down process and to optimize the overall efficiency of the FRS Ion Catcher. Alpha-decay recoil ions from a 223Ra source are used to determine the ion survival and transport efficiencies, which reflect the charge-exchange and stripping cross-sections during the slowing down process of the ions. These investigations as well as other efficiency optimizations of the FRS Ion Catcher will be presented.