A magnetic resonance assembly comprising, a liquid cryogen vessel, a liquid
cryogen cooled conducting magnet disposed within the liquid cryogen
vessel, a closed vaccum vessel surrounding the liquid cryogen vessel and
spaced from the liquid cryogen vessel, a cooling device fixably attached
to the vacuum vessel operable for providing cryogenic temperatures to the
superconducting magnet, a heat exchanger device in thermal contact with
the liquid cryogen vessel operable for heat exchange, and a bus bar in
thermal contact with the cooling device and the heat exchanger device. The
cooling device may be a pulse tube cryocooler capable of providing
temperatures of about 4 K. A thermal bus bar of high purity aluminum or
copper is used to connect and provide a spatial separation of a pulse tube
cryocooler and a remote recondenser unit, thus reducing the overall height
of the magnet assembly.
