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MS: Fachverband Massenspektrometrie
MS 1: Precision Mass Spectrometry I
MS 1.2: Vortrag
Montag, 9. März 2020, 11:30–11:45, f128
Systematic effects of high-precision mass measurements at Pentatrap — •Kathrin Kromer, Menno Door, Sergey Eliseev, Pavel Filianin, Wenjia Huang, Charlotte M. König, Alexander Rischka, Rima X. Schüssler, Christoph Schweiger, and Klaus Blaum — Max-Planck-Institut für Kernphysik, 69117 Heidelberg, Germany
Pentatrap [1] is a high-precision Penning-trap mass spectrometer featuring a stack of five Penning traps and determining mass-ratios with a relative uncertainty of below 10−11. Mass-ratio determinations of stable and long-lived highly charged ions at this level have numerous applications, among others, in neutrino physics [2] and tests of special relativity [3]. Systematic uncertainties include electric and magnetic field anharmonicities and missalignments as well as fluctuating environmental parameters like external magnetic fields, pressure, and temperature. The systematic uncertainties stemming from environmental influences are measured in order to find possible correlations to fluctuations in the cyclotron frequency of the trapped highly charged ions. Stabilization systems have been tested and have shown improvements, e.g. the active stabilization of the liquid-helium level and the pressure in the magnet’s cold bore, resulting in Pentatrap’s first mass-ratio measurement with a relative uncertainty of 1 · 10−11.
[1] Repp, J. et al., Appl. Phys. B 107, 983 (2012)
[2] Gastaldo, L. et al., Eur. Phys. J. ST 226, 1623 (2017)
[3] Rainville, S. et al., Nature 438, 1096 (2005)