Planar, strong magnetic field source for a chip ion trap

Pinder, Jonathan, Lacy, John H, Willetts, Ryan, Cridland Mathad, April, Uribe, Alberto and Verdú, José (2020) Planar, strong magnetic field source for a chip ion trap. Review of Scientific Instruments, 91 (10). 103201 1-12. ISSN 0034-6748

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We present a planar, scalable magnetic field source, originally conceived for a chip ion trap. It consists of two symmetric sections, each with several independent currents arranged in coplanar, concentric rectangular loops. The currents allow for tuning the strength of the field and its lowest-order derivatives at one discretional position along the source’s vertical symmetry axis, a few mm above its surface. We describe the construction and calibration of the device and the cryogenic setup. The two most important current configurations for a Penning ion trap, the homogeneous field and the magnetic bottle, are investigated experimentally. Homogeneous fields around 0.5 T are routinely reached. We discuss the maximum attainable field, and we briefly describe ongoing further developments aiming at homogeneous fields well above 1 T.

Item Type: Article
Keywords: Planar magnetic field, shimming currents, magnetic bottle, geonium chip, ion trap
Schools and Departments: School of Mathematical and Physical Sciences > Physics and Astronomy
SWORD Depositor: Mx Elements Account
Depositing User: Mx Elements Account
Date Deposited: 05 Oct 2020 11:50
Last Modified: 19 Jul 2021 10:39

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