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Abstract #2760

Toward an Integrated RF-Shield-Gradient Coil Design Method

Hector Sanchez-Lopez1, Ewald Weber1, Michael Poole1, Limei Liu1, Stuart Crozier1

1ITEE, The University of Queensland, Brisbane, QLD, Australia

The RF shield aims to prevent electromagnetic interactions between the RF coil and the electromagnetic environment in which the coil is immersed. The slits in the RF shield cut the path of the eddy currents flow, thus ameliorating deleterious effects such as mechanical vibration and power heating. This last effect can significantly deteriorate the RF coil. In this paper we present an integrated design RF-shield-gradient coil in which power loss due to eddy currents is reduced by more than 8 times than of a conventional design. We demonstrated that an integrated design process conduces toward novel gradient coil.

Keywords

achieved aims ameliorating amount analytical artifacts assumed assumes axial azimuth basis becomes body boundary cause choose coil coils cold combination combinations combined concept conduces conducting considerable considering constant constrained contribute controlled copper coupling cryostat cuts cylinder decay deleterious density design designed designs deteriorate devoted eddy efficient effort electromagnetic element energy environment equivalent evaluate excessive expressed expression fewer field flow free functions funded gradient heating hector hence hybrid immersed includes induces inductive initiatives integrated integrating interaction interactions journal kinds larger length lengths linear linearity loss magnet magnetization magnetized manufactured mechanical mentioned merit minimal minimized minimizes moreover necessary network novel ohmic optimal optimized overlap paper partially patent path pattern performance placed power prevent primary problem process produce produced produces proposed radii radius reduced reduces reduction remedy respectively secondary shield shields short simulation slits stored strength submitted surface surfaces system table tends terms thin toward undesired uniform usually vertically vibration volume watts weber whole