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Abstract #3058

Evaluation of Two Shielding Strategies

Hector Sanchez1, Michael Poole1, Feng Liu1, Stuart Crozier1

1School of Information Technology & electrical Engineering, The University of Queensland, Brisbane, QLD, Australia

This paper presents an evaluation between shielded gradient coils designed by the traditional methods (magnetic field minimization on the cryostat wall, method A) and the magnetic field control of Eddy Currents at the DSV (method B). Using the Equivalent Magnetization Current method we designed a set of gradient coils using methods A and B. We show that coils designed by method A require a larger pre-emphasis than those of method B. The interested contaminant field harmonics produced by method B dissipates faster than those harmonics produced by the coil designed with method A. Parameters such as residual gradient field and figure of merit are analysed.