General Electric Company

Intermagnetics General Corporation

Ahmed K Kalafala

Evangelos Trifon Laskaris

Constantinos Minas

Michael Anthony Palmo, Jr

Madabushi V Chari

Dan A Gross

John D'Angelo

Yuri Lvovsky

Karl F Schoch

A cylindrical magnet assembly for use in magnetic resonance imaging apparatus has a radially compact construction which eliminates prior manufacturing steps. Recesses are formed in insulation layers for receiving complimentary shaped bus bars. Because the bus bars are dimensioned to fit flush within the recesses, they do not add to the radial growth of the magnet assembly.

Compact gradient coil assembly for MRI apparatus

This invention relates to current leads for a superconducting magnet system of the type that are constructed of two-stages. Such structures of this type, generally, operate from ambient temperature to the temperature at the thermal shield and from the temperature of the thermal shield to that of the magnet such that ohmic losses are reduced.

Superconducting current leads for a cryogenless superconducting magnetic

This invention relates to a cryogenless superconducting magnet system of the type that is attached to a utility grid at end-user site and is used to store electrical energy until such time that an electrical disruption occurs in the grid. Structures of this type, generally, allow the stored electrical energy to be released in such a manner that the disruption in the utility grid is negated before it reaches critical loads.

Superconducting magnetic energy storage device

Composite superconducting windings of the type that have superconductor wires wound with glass cloth, an array of axial insulated copper wires, copper foil straps of expanded metal or perforated foil which are positioned between winding layers to reinforce the composite winding and enhance the thermal conductivity of the winding, and an overwrap of high strength stainless steel wires to provide additional rigidity to the composite winding. Structures of this type, generally, form a self-supported, structurally robust composite winding and support structure that is capable of withstanding the hoop and axial stresses that result from the electromagnetic loads created by the superconductor.

Superconducting winding and support structure

A method and apparatus for impregnating the superconductors on a superconductor winding with epoxy such that a vacuum/pressure containment vessel, in which the winding is placed, allows epoxy to be introduced into the vessel whereby the epoxy eventually impregnates the superconductors through the application of various evacuating, pressuring and epoxy transporting steps.

Apparatus and method for impregnating superconductor windings

A method of making an actively shielded magnet is provided which uses a Monte Carlo simulation to minimize the amount of total conductor material used in a coil arrangement. This method reduces stray field while providing superior magnetic field homogeneity in the working volume of the magnet. Each coil contributes to the overall homogeneity of the magnet.

Method of determining coil arrangement of an actively shielded magnetic

A shield for a MR magnet is provided comprising a cylindrical shell of magnetic material surrounding the MR magnet. The cylindrical shell is situated so that its longitudinal axis is coaxial with the magnetic axis of the MR magnet. Two disk shape end caps of magnetic material are secured to either end of the cylindrical shell. The end caps each define a central aperture extending longitudinally through the disk, with the radial extent of each of the apertures sized so that the perturbation of the field in the working volume of the MR magnet due to the cylindrical shell is compensated for.

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Albany, NY, United States of America

Ahmed K Kalafala