Hannover 2016 – wissenschaftliches Programm
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A: Fachverband Atomphysik
A 30: Precision spectroscopy of atoms and ions (with Q)
A 30.17: Poster
Mittwoch, 2. März 2016, 16:30–19:00, Empore Lichthof
A superconducting resonator-driven linear radio-frequency trap for long-time storage of highly charged ions — •Julian Stark1, Lisa Schmöger1,2, Andrii Borodin1, Janko Nauta1, and José R. Crespo López-Urrutia1 — 1Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg — 2Physikalisch-Technische Bundesanstalt, Bundesallee 100, 38116 Braunschweig
Cold, strongly localized highly charged ions (HCIs) are particularly interesting candidates for novel frequency standards at a potential 10−19 level relative accuracy and searches for physics beyond the Standard Model, such as possible drifts in the value of the fine structure constant α. For sympathetic cooling of HCIs, these are simultaneously trapped with laser-cooled Be+ ions in a cryogenic linear radio-frequency (RF) Paul trap [1,2]. Stable localization requires a high voltage RF drive with low noise. Currently, a new RF resonator is commissioned which includes the quadrupole trapping electrodes in the cavity. The high quality factor Q of the resonator will drastically reduce Paul trap heating rates as well as improve the overall stability of the trapping conditions. This will render electrodynamical losses of trapped ions negligible and enables precise localization of HCIs which is needed for high precision laser spectroscopy.
[1] M. Schwarz et al., Rev. Sci. Instrum. 83, 083115 (2012)
[2] L. Schmöger et al., Science 347, 6227 (2015)