Toward Comissioning SCARIEST SCORPIONS*

The SCARIEST SCORPIONS (Sideband Cooling, Applied to Radioactive Isotopes in an Entangled State Trap, for Spectroscopy - Consisting Of Ramsey Phase Interferometry - On Nuclear Shifts) aims to extend the King plot nonlinearity analysis [1] of Yb to unstable isotopes. To this end, SCARIEST SCORPIONS will achieve sub-kHz level isotope shift measurements by loading unstable Yb+ ions into a linear Paul trap, and directly measuring level shifts between pairs of co-trapped ions. 

The levels in question will be equivalent weak-field Zeeman levels from each isotope, requiring precise magnetic field control in our setup. A dry fit of the experiment was performed and rectangular Helmholtz coils were designed around the setup to provide consistent field throughout the trapping region. Sections of the experiment were redisigned.

[1] Door, M., Yeh, C.-H., Heinz, M., Kirk, F., Lyu, C., Miyagi, T., Berengut, J. C., Bierón, J., Blaum, K., Dreissen, L. S., Eliseev, S., Filianin, P., Filzinger, M., Fuchs, E., Fürst, H. A., Gaigalas, G., Harman, Z., Herkenhoff, J., Huntemann, N., Mehlstäubler, T. E. (2024). Search for new bosons with ytterbium isotope shifts. https://arxiv.org/abs/2403.07792v1