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arXiv · 1910.12479

Design of a loop-gap resonator with bimodal uniform fields using finite element analysis

Matthew M. Libersky·Daniel M. Silevitch·Ammar Kouki
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Abstract

The loop-gap resonator (LGR) was originally developed to provide a uniform microwave magnetic field on a sample for electron spin resonance (ESR) experiments. The LGR is composed of one or more loops and gaps acting as inductances and capacitances respectively. Typical LGR designs produce a uniform field on a sample at a single resonant frequency, but for certain experiments it is necessary to study the response of a material to uniform fields at multiple frequencies applied simultaneously. In this work we develop an empirical design procedure using finite element method calculations to design an asymmetric loop-gap resonator with uniform fields at two frequencies in the same sample volume and analyze the field uniformity, frequency tunability and filling factors, providing comparison to a manufactured device.

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Matthew M. Libersky, Daniel M. Silevitch, Ammar Kouki. 2019-10-28. Design of a loop-gap resonator with bimodal uniform fields using finite element analysis. https://arxiv.org/abs/1910.12479

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