A magnetic resonance device with a cavity and with a basic field magnet
and a gradient coil system, with the basic field magnet having a cavity
that is bounded by an electrically conductive boundary surface of the
basic field magnet and in which the gradient coil system is arranged,
containing the following features: the gradient coil system has at
least two structurally separate units with a clearance between them, with
each of the units being enclosed by the high-frequency shield; the
high-frequency shield has a short clearance from the boundary surface
such that, because of the capacitive coupling between the high-frequency
shield and the boundary surface, the high-frequency shield has a
high-frequency short circuit to the boundary surface, so that the
boundary surface is a surface that is always available for the
high-frequency return flow.