Mainz 2026 – wissenschaftliches Programm
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MS: Fachverband Massenspektrometrie
MS 4: New Methods, Technical Development
MS 4.5: Vortrag
Mittwoch, 4. März 2026, 15:45–16:00, N 6
A Multi-Reflection Time-of-Flight Mass Spectrometer for PENTATRAP — •Finn Mehlhorn1, Sergey Eliseev1, Pavel Filianin1, Julius Franke1, Jan Nägele1, Moritz Schlaich2, Christoph Schweiger1, Frank Wienholtz2, and Klaus Blaum1 — 1Max-Planck-Institut für Kernphysik, Heidelberg, Germany — 2Technische Universität Darmstadt, Institut für Kernphysik, Darmstadt, Germany
PENTATRAP is presently the most precise Penning-trap mass spectrometer, achieving routinely relative mass uncertainties of down to a few 10−12 for stable and long-lived nuclides. Precision measurements at this level contribute to investigations of fundamental and beyond Standard Model physics [1,2]. The Highly-Charged Ions (HCI) are created inside an Electron Beam Ion Trap and separated using a Bradbury-Nielsen gate, according to their q/m ratios, before reaching the main apparatus. The limited path length towards the gate only allows for resolving powers of R ≈ 100. Thus, contaminants with nearby q/m values of the ion of interest appear in the traps [1].
This talk will present the development of a Multi-Reflection Time-of-Flight Mass Separator using HCI for PENTATRAP, to complement the current system. The design targets a resolving power of R ≥ 10000 for separation of contaminants. The device is optimized towards a high acceptance for the ion source and the wide application range of PENTATRAP. The current status and simulations will be presented.
[1] Door, et al., Phys. Rev. Lett. 134, 063002 (2025)
[2] Schweiger, et al., Nature Physics 20, 921-927 (2024)
Keywords: MR-ToF; Mass Separator; Highly Charged Ions; PENTATRAP; High Precision