Rostock 2019 – wissenschaftliches Programm
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A: Fachverband Atomphysik
A 22: Highly charged ions and their applications
A 22.6: Poster
Mittwoch, 13. März 2019, 16:15–18:15, S Fobau Physik
CryPTEx II: A superconducting radio-frequency trap for long-time storage of highly charged ions — •Julian Stark1, Sandra Bogen1, Lena Haaga1, Steffen Kühn1, Christian Warnecke1, Steven A. King2, Tobias Leopold2, Peter Micke2, Janko Nauta1, Jan-Hendrik Ölmann1, Lisa Schmöger1, Lukas Spieß1, Thomas Pfeifer1, Piet O. Schmidt2, and José R. Crespo López-Urrutia1 — 1Max-Planck-Institut für Kernphysik, Heidelberg, Germany — 2Physikalisch-Technische Bundeanstalt, Braunschweig, Germany
Cold highly charged ions (HCI) are excellent candidates for the development of novel optical clocks and will serve for stringent tests of the constancy of natural constants, as they feature narrow optical transitions with an enhanced sensitivity to a possible variation of the fine-structure constant or of the proton-to-electron mass ratio [1,2]. At the cryogenic Paul trap experiment (CryPTEx), a broad range of HCI can be trapped and sympathetically cooled down to the mK range by laser-cooled Be+ ions, which allows for high-precision laser spectroscopy. Here, we present the commissioning of the successor experiment, CryPTEx II, which features a novel superconducting quadrupole resonator to confine ions in extremely stable radio-frequency potentials. Furthermore, in order to increase the storage times of cold HCI, a low-vibration cryogenic system was developed in collaboration with the QUEST institute at PTB in Braunschweig.
[1] J. C. Berengut et al., Phys. Rev. Lett. 106, 210802 (2011)
[2] M. G. Kozlov et al., arXiv:1803.06532 (2018)