An Efficient Superconducting Transformer Design for SQUID Magnetometry

Authors: J. A. B. Mates, K. D. Irwin, L. R. Vale, G. C. Hilton, H. M. Cho,

Publish Date: 2014/02/28

Volume: 176, Issue:3-4, Pages: 483-489

PDF Link

Abstract

We describe a novel superconducting transformer design for the efficient transfer of magnetic flux from a macroscopic pickup coil to a low-inductance SQUID. A large number of highly-efficient one-to-one transformer elements are wired in series and in parallel, for the primary and secondary of the transformer, respectively. This transformer coupling allows us to isolate the SQUID from the microwave resonances inherent in high-inductance coils.

Keywords: