Single sensor high-temperature superconducting axial gradiometer with thick film pick-up loops

Haining, S. and Romans, E.J. and Pegrum, C.M. and Donaldson, G.B. and Hao, L. and Macfarlane, J.C. (2005) Single sensor high-temperature superconducting axial gradiometer with thick film pick-up loops. IEEE Transactions on Applied Superconductivity, 15 (2). pp. 769-772. ISSN 1051-8223 (https://doi.org/10.1109/TASC.2005.850050)

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Abstract

A high-temperature superconducting first-order axial gradiometer with thick film YBa2Cu3O7-delta pick-up loops inductively coupled to a thin film YBa2Cu3O7-delta superconducting quantum interference device magnetometer has been designed, fabricated and characterized. The gradiometer has a baseline of 79 mm, an estimated intrinsic system balance of 1:480 for uniform axial magnetic fields and an estimated axial magnetic field gradient sensitivity of 70 fT/(cm root Hz) at 1 kHz, in magnetic shielding.