Mainz 2026 – scientific programme
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MS: Fachverband Massenspektrometrie
MS 4: New Methods, Technical Development
MS 4.2: Talk
Wednesday, March 4, 2026, 15:00–15:15, N 6
Optimization of the isochronous mass spectrometry mode at the Cryogenic Storage Ring — •Tobias Orlemann1, Manfred Grieser1, Florian Grussie1, Leonard Isberner3,1, Holger Kreckel1, Viviane Schmidt2, Andreas Wolf1, and Oldřich Novotný1 — 1Max-Planck-Institut für Kernphysik, Heidelberg — 2Universität Innsbruck — 3Columbia University, New York
The Cryogenic Storage Ring (CSR) at the Max Planck Institute for Nuclear Physics is dedicated to the study of astrophysically relevant molecular ions. Due to its electrostatic ion optics, species of different masses can be stored simultaneously along with the primary beam. In the isochronous mode of the CSR, the relative revolution frequency depends only on the particle’s mass-to-charge ratio. We use isochronous time-of-flight mass spectrometry (ISO-ToF) to analyze the storage of impurities in the primary beam, including molecular isobars, with a mass resolution down to Δm/m < 10−5 [1]. Furthermore, improving the resolution requires the reduction of space charge effects by storing less intense ion beams, while increasing the detection efficiency through fast extraction and full beam detection. Here, we report on the first test of this method. We present detailed data on the evolution of the ion beam properties over several seconds of storage in isochronous mode.
[1] Grieser et al., Rev. Sci. Instrum. 93, 063302 (2022)
Keywords: time of flight; mass spectrometry; storage ring