Abstract: A system for producing precision magnetic coil windings is provided. The system includes a wire disposing assembly having a support, an axial traverser sub-assembly, and a support arm. The support is configured to receive a plurality of turns of a wire. The axial traverser sub-assembly is operatively coupled to the support. The support arm includes a wire disposing device. The system further includes a linear stage, a monitoring unit, a feedback unit, and a controller unit. The linear stage is operatively coupled to the support arm. Moreover, the controller unit is configured to axially position an incoming portion of the wire and provide reference trajectories for tracking.

Abstract: A superconducting magnet system includes a coil support structure, superconducting coils, and electrically and thermally conductive windings. The superconducting coils and the conductive windings are supported by the coil support structure. Each conductive winding is electromagnetically coupled with a corresponding superconducting coil. Each conductive winding is electrically shorted.

Abstract: A superconducting magnet system includes a coil support structure, superconducting coils, and electrically and thermally conductive windings. The superconducting coils and the conductive windings are supported by the coil support structure. Each conductive winding is electromagnetically coupled with a corresponding superconducting coil. Each conductive winding is electrically shorted.

Abstract: A superconducting magnet assembly includes a bobbin comprising a central bore along a longitudinal direction, and a superconducting coil package wound on the bobbin. The superconducting coil package includes a plurality of superconducting coil layers wound on the bobbin, a plurality of supporting member layers, each of the supporting member layers being between a corresponding two adjacent superconducting coil layers, and a thermal conduction layer between two superconducting coil layers or between a superconducting coil layer and an adjacent supporting member layer.

Abstract: A vacuum feed-through assembly and a method for manufacturing the same including a conductor having a threaded outer diameter end, a plastic seal having a threaded inner diameter matching the threaded outer diameter end of the conductor, and an epoxy to epoxy bond the threaded inner diameter of the plastic seal to the threaded outer diameter end of the conductor.

Abstract: A cryocooler assembly for cooling a field winding of an electrical machine having an axis of rotation is provided. The assembly includes a cryocooler and a reservoir coupled in flow communication to the cryocooler and configured to contain a cooling agent. A flow assembly is coupled in flow communication to the reservoir. The flow assembly includes a first flow loop coupled in flow communication to the reservoir; a second flow loop coupled in flow communication to the reservoir; and a plurality of flow members coupled in flow communication to the first flow loop and the second flow loop and coupled to the field winding. Each flow member is configured to thermosiphon the cooling agent in a first state from the reservoir and in a second state to the reservoir.

Abstract: A warm bore cylinder assembly having an outer wall, an inner wall, and a plurality of braces is provided. The outer wall is configured to define an inner exterior portion of a cryostat assembly. The outer wall is generally cylindrical, is made of a conductive material, and has an outer wall thickness. The inner wall is disposed radially inwardly of the outer wall. The inner wall is generally cylindrical, is made of a conductive material, and has an inner wall thickness. The braces extend along an axial direction defined by the outer wall and the inner wall. The plurality of braces are interposed between and join the outer wall and inner wall. The plurality of braces define openings disposed between adjacent braces.

Abstract: A superconducting magnet is described and includes at least one superconducting coil, at least one support member coupled to the superconducting coil and at least one compliant interface between the superconducting coil and the support member. The superconducting coil defines a radial direction. The superconducting coil supports the superconducting coil along an axial direction that is substantially perpendicular to the radial direction. The compliant interface is configured to move along the radial direction when the superconducting magnet is energized.

Abstract: A cryogenic system for a superconducting magnet comprises a closed-loop cooling path. The closed-loop cooling path comprises a magnet cooling tube thermally coupled to the superconducting magnet. The magnet cooling tube comprises a cryogen flow passage. The closed-loop cooling tube further comprises a re-condenser is fluidly coupled to the magnet cooling tube through tube sections and a liquid cryogen container fluidly coupled between the magnet cooling tube and the re-condenser. At least one gas tank is fluidly coupled to the magnet cooling tube through a connection tube.

Abstract: A current lead assembly for minimizing heat load to a conduction cooled superconducting magnet during a ramp operation is provided. The current lead assembly includes a vacuum chamber having a through hole to enable a retractable current lead having a retractable contact to penetrate within the vacuum chamber. A superconducting magnet is arranged inside of the vacuum chamber and includes a magnet lead. A current contact is arranged inside of the vacuum chamber beneath the through-hole and is coupled to the magnet lead via a thermal connector. The current contact is supported by a thermal isolation support structure coupled to an inside wall of the vacuum chamber. An actuator assembly is provided to contact the retractable contact with the current contact, where connection occurs at ambient temperature inside of the thermal isolation support structure.

Abstract: A fuel gas delivery system is provided. The fuel gas delivery system includes a feed line configured to provide a natural gas stream and a cryocooler fluidly coupled to the feed line. The cryocooler is configured to condense the natural gas to provide a liquefied natural gas (LNG) stream and to freeze impurities contained in the natural gas stream. The frozen impurities are separated from said LNG stream. A first heat exchanger is fluidly coupled to the cryocooler and the first heat exchanger is configured to vaporize at least a portion of the LNG stream to provide compressed natural gas. A delivery line is configured to supply the compressed natural gas to an end user and a removal line is configured to remove the impurities from the fuel gas delivery system.

Abstract: Systems and methods for self-sealing a coldhead sleeve of a magnetic resonance imaging system are provided. One coldhead sleeve arrangement includes a coldhead sleeve configured to receive therein a coldhead of an MRI system and having an open end. The coldhead sleeve arrangement also includes a sealing member coupled at the open end of the coldhead sleeve and configured in a normally closed position covering the open end.

Abstract: A method for cooling a superconducting magnet enclosed in a cryostat includes introducing a gas into a cooling path in the cryostat from an input portion into a cooling path cooled by a refrigerator outside the cryostat. A heat exchanger inside the cryostat above the magnet cools the gas. The cooled gas flows through a magnet cooling tube contacting the magnet. The cooled gas removes heat from the magnet, and to the heat exchanger to re-cool and return to the superconducting magnet, thereby cooling and/or maintaining the magnet at a superconducting temperature.

Abstract: A system is disclosed for cooling superconducting devices. The system includes a cryogen cooling system configured to be coupled to the superconducting device and to supply cryogen to the device. The system also includes a cryogen storage system configured to supply cryogen to the device. The system further includes flow control valving configured to selectively isolate the cryogen cooling system from the device, thereby directing a flow of cryogen to the device from the cryogen storage system.

Abstract: A superconducting magnet assembly is provided. The superconducting magnet assembly includes a superconducting magnet configured to generate a static magnetic field, an iron shield configured to shield the superconducting magnet, and a magnetic gradient coil assembly configured to generate a gradient magnetic field. The superconducting magnet assembly further includes one or more magnetic lamination elements disposed on the iron shield to reduce eddy current induced by the gradient magnetic field in the iron shield. A method is also presented.

Abstract: A magnetizing coil unit and a method of making a magnetizing coil unit is provided. The coil includes a solenoid coil having a coiled copper sheet in which the width of the copper sheet is equal to the height of the solenoid coil. A magnetizing assembly includes a plurality of magnetizing coil units.

Abstract: A cooling system and method for cooling superconducting magnet coils are provided. One magnet system for a superconducting magnet device includes a cooling system having at least one coil support shell, a plurality of superconducting magnet coils supported by the at least one coil support shell and a plurality of cooling tubes thermally coupled to the at least one coil support shell. The magnet system also includes a cryorefrigerator system fluidly coupled with the plurality of cooling tubes forming a closed circulation cooling system.

Abstract: A superconducting magnet system includes a coil support structure, superconducting coils, and electrically and thermally conductive windings. The superconducting coils and the conductive windings are supported by the coil support structure. Each conductive winding is electromagnetically coupled with a corresponding superconducting coil. Each conductive winding is electrically shorted.

Abstract: An electrical component comprises a superconductive wire, the wire comprising a first wire segment joined to a second wire segment, wherein the first wire segment and the second wire segment differ in at least one property selected from the group consisting of magnetic field tolerance, temperature tolerance, ac loss, and strain tolerance, and wherein the magnetic field tolerance is measured by the relationship of critical current Ic to magnetic field H at a given temperature T below critical temperature Tc, the temperature tolerance is measured by the relationship of critical current Ic to temperature T at a given magnetic field below critical magnetic field Hc, the ac loss is measured by the amount of ac loss versus the frequency and magnitude of applied ac currents and fields, and the strain tolerance is measured by critical current Ic degradation with strain.

Abstract: An electric machine and stator assembly includes a segmented stator having stator portions. Each stator portion includes stator laminations, end plates arranged axially on opposing sides of the stator portion, and structural plates arranged interior to the end plates. Each of the support plates has a portion with notch-like structures that is embedded within the stator laminations. Stabilizing couple the end plates and the structural plates together. Connectors are provided to connect the stator portions together.