Erlangen 2022 – scientific programme
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A: Fachverband Atomphysik
A 21: Highly charged ions and their applications
A 21.7: Poster
Wednesday, March 16, 2022, 16:30–18:30, P
Production of a mixed highly charged ion Coulomb crystal — •Malte Wehrheim1, Elwin A. Dijck1, Christian Warnecke1,2, Ruben Henninger1, Michael Karl Rosner1,2, Alvaro Garmendia1, Andrea Graf1, Julia Eff1, Claudia Volk1, Kostas Georgiou1,3, Christopher Mayo1,3, Lakshmi P. Kozhiparambil Sajith1,3,4, Morten Will1, José Ramon Crespo López-Urrutia1, and Thomas Pfeifer1 — 1Max-Planck-Institut für Kernphysik, Heidelberg — 2Heidelberg Graduate School for Physics — 3University of Birmingham, United Kingdom — 4DESY, Zeuthen
Precise spectroscopy of highly charged ions (HCI) is a promising candidate for the search of physics beyond the standard model. As a precondition we demonstrate the co-trapping of Ar13+ in a precooled beryllium Coulomb crystal with the novel design of our cryogenic Paul trap. After the extraction of hot HCI (103K range) from our electron beam ion trap (EBIT) the desired charge state is selected and the HCI beam is brought into the Trap. The main chamber of our experiment CryPTEx-SC (Cryogenic Paul Trap Experiment - superconducting) combines the geometry of a linear Paul trap with a superconducting resonator for the most stable radiofrequency fields. There we achieve the preparation of mixed beryllium and HCI Coulomb crystals of variable size with mK temperatures. By characterizing our trap, we verify that the correct charge state was selected which will be used for a benchmark measurement of the 2p 2P1/2 → 2P3/2 fine structure transition of Ar13+ using quantum logic spectroscopy.