Abstract: A persistent current switch is presented. One embodiment of the persistent current switch includes a vacuum chamber. The persistent current switch also includes a cooling unit disposed within the vacuum chamber and configured to circulate a coolant between a first layer and a second layer of the cooling unit. Further, the persistent current switch includes a winding unit disposed on at least one of the first layer and the second layer of the cooling unit and configured to switch the persistent current switch from the first mode to the second mode when a temperature associated with the winding unit is below a threshold temperature. In addition, the persistent current switch includes a heating unit thermally coupled to the winding unit and configured to enhance the temperature of the winding unit above the threshold temperature to transition the persistent current switch from the second mode to the first mode.

Abstract: A cryogenic cooling system is presented herein. The system comprises an on-demand hydrogen reservoir adapted to be filled by an external hydrogen filling station. The system further comprises a cryocooler coupled with the on-demand hydrogen reservoir. The cryocooler is adapted to operate in a range from about 10 Kelvin to 20 Kelvin. The system further comprises a liquid hydrogen reservoir adapted to receive liquid hydrogen through the cryocooler. At least one superconducting magnet is adapted to operate in a range from about 10 Kelvin to 20 Kelvin and generate a magnetic field. Furthermore, the system comprises a plurality of cooling tubes adapted to receive liquid hydrogen from the liquid hydrogen reservoir, wherein the cooling tubes are adapted to cool down the superconducting magnet.

Abstract: A cryogenic cooling system includes a chamber defined by an outer wall and an inner wall, the chamber housing at least one component to be cooled; a wicking structure in thermal contact with one of the outer wall and the inner wall of the chamber; and a delivery system in a spaced apart relationship with the chamber and fluidly connected to the wicking structure for transporting a working fluid to and from the wicking structure. Also provided is a magnetic resonance imaging system including the cryogenic cooling system.

Abstract: The present disclosure is generally directed towards magnetization of permanent magnets using superconducting magnetizers. For example, in one embodiment, a superconducting magnetizer assembly is provided. The assembly includes a coil pack having an inner coil including a first superconducting magnet material, the coil being configured to generate a first magnetic field in response to an electric current supplied to the coil, and an outer coil including a second superconducting magnet material, the outer coil being disposed about the inner coil and being configured to generate a second magnetic field in response to an electric current supplied to the outer coil. The coil pack also includes a container configured to house the inner and the outer coils.

Abstract: A system for cooling superconducting materials used for magnetization of magnets disposed within a cylindrical structure, the system including a first tubing system for allowing a cooling gas to interact with a high-field strength superconducting material to thermosiphon-cool the high-field strength superconducting material, a second tubing system for allowing a cooling gas to interact with a low-field strength superconducting material to thermosiphon-cool the low-field strength superconducting material, and a cooling gas in liquefied form configured to flow through the first tubing system and/or the second tubing system. An outlet of the first tubing system and an outlet of the second tubing system are located at a same location on a surface of the cylindrical structure. A method for cool superconducting materials used for magnetization of magnets disposed within a cylindrical structure is also disclosed.

Abstract: A penetration assembly for a cryostat is presented. The penetration assembly includes an outer wall member having a first end and a second end and configured to alter an effective thermal length of the wall member, wherein a first end of the tube is communicatively coupled to a high temperature region and the second end of the tube is communicatively coupled to a cryogen disposed within a cryogen vessel of the cryostat. In addition, the penetration tube assembly includes a telescoping inner wall member comprising a plurality of tubes nested within one another, and wherein each tube in the plurality of tubes is operatively coupled to at least one other tube in series.

Abstract: A penetration assembly for a cryostat is presented. The penetration assembly includes a wall member having a first end and a second end and configured to alter an effective thermal length of the wall member, where a first end of the wall member is communicatively coupled to a high temperature region and the second end of the wall member is communicatively coupled to a cryogen disposed within a cryogen vessel of the cryostat.

Abstract: A magnetizer for magnetizing permanent magnets positioned in-situ a mechanical member is disclosed. The magnetizer comprises at least one primary superconducting coil configured to project a magnetic field flux configuration of a first type to at least a portion of a distal volume of a first type, and at least two auxiliary coils symmetrically disposed about the at least one primary superconducting coil and configured to project magnetic field flux configurations of a second type to at least a portion of a distal volume of a second type. A method of magnetizing a permanent magnet in-situ within a mechanical member is also disclosed.

Abstract: A superconducting magnet assembly and method of cooling a superconducting magnet assembly.

Abstract: A magnetic resonance imaging (MRI) system with a thermal reservoir and method for cooling are provided. A cooling vessel for a magnet system of the MRI system includes a first portion containing a helium cryogen in contact with a plurality of magnet coils of an MRI system. The cooling vessel also includes a second portion separate from and fluidly decoupled from the first portion, with the second portion containing a material different than the helium cryogen and having a volume greater than the first portion.

Abstract: A fluid path system includes a vial containing a pharmaceutical product therein. A dissolution fluid path is also included in the fluid path system, the dissolution fluid path having an output end in fluid communication with the vial and an input end attached to a pressure vessel containing a dissolution medium. A delivery fluid path is also included in the system having a first end hermetically attached to the vial to transport therefrom a mixture of dissolved pharmaceutical product and dissolution medium and a second end connected to a receiving vessel to receive the mixture. A dissolution fluid path valve is positioned between the pressure vessel and the dissolution fluid path to control flow of the dissolution medium, and a delivery fluid path valve is also included in the fluid path system to control flow of the mixture from the delivery fluid path to the receiving vessel.

Abstract: A superconducting magnet coil support with cooling and a method for coil cooling are provided. One superconducting coil support arrangement includes a superconducting coil and at least one support beam supporting the superconducting coil and defining a tank for storing a cooling fluid therein. The superconducting coil support arrangement further includes a plurality of cooling tubes coupled to the superconducting coil and connected to the at least one support beam, wherein the plurality of cooling tubes are configured to transfer the cooling fluid therethrough.

Abstract: A system for cooling superconducting materials used for magnetization of magnets disposed within a cylindrical structure, the system including a first tubing system for allowing a cooling gas to interact with a high-field strength superconducting material to thermosiphon-cool the high-field strength superconducting material, a second tubing system for allowing a cooling gas to interact with a low-field strength superconducting material to thermosiphon-cool the low-field strength superconducting material, and a cooling gas in liquefied form configured to flow through the first tubing system and/or the second tubing system. An outlet of the first tubing system and an outlet of the second tubing system are located at a same location on a surface of the cylindrical structure. A method for cool superconducting materials used for magnetization of magnets disposed within a cylindrical structure is also disclosed.

Abstract: The present disclosure is generally directed towards magnetization of permanent magnets using superconducting magnetizers. For example, in one embodiment, a superconducting magnetizer assembly is provided. The assembly includes a coil pack having an inner coil including a first superconducting magnet material, the coil being configured to generate a first magnetic field in response to an electric current supplied to the coil, and an outer coil including a second superconducting magnet material, the outer coil being disposed about the inner coil and being configured to generate a second magnetic field in response to an electric current supplied to the outer coil. The coil pack also includes a container configured to house the inner and the outer coils.

Abstract: A superconducting magnetizer includes a thermal shield disposed within a vacuum chamber. A superconducting magnet is disposed within the thermal shield and configured to generate a magnetic field in response to an electric current supplied to the superconducting magnet. A heat transfer device comprising at least one of a thermal conduction device, and a heat pipe is disposed contacting the superconducting magnet. A cryocooler is coupled to the heat transfer device and configured to cool the superconducting magnet via the heat transfer device.

Abstract: A magnetizer for magnetizing permanent magnets positioned in-situ a mechanical member is disclosed. The magnetizer comprises at least one primary superconducting coil configured to project a magnetic field flux configuration of a first type to at least a portion of a distal volume of a first type, and at least two auxiliary coils symmetrically disposed about the at least one primary superconducting coil and configured to project magnetic field flux configurations of a second type to at least a portion of a distal volume of a second type. A method of magnetizing a permanent magnet in-situ within a mechanical member is also disclosed.

Abstract: A superconducting magnet assembly and method of cooling a superconducting magnet assembly.

Abstract: A superconducting magnet assembly and method of cooling a superconducting magnet assembly includes thermally connecting a pulsating heat pipe to the superconducting magnet assembly and adding a liquid cryogen to the pulsating heat pipe. The superconducting magnet assembly also includes a coil former, at least one superconducting solenoid magnet comprising at least one superconducting winding wrapped about the coil former and configured to generate a magnetic field, and at least one pulsating heat pipe thermally connected to the at least one superconducting solenoid magnet. The present invention has been described in terms of specific embodiment(s), and it is recognized that equivalents, alternatives, and modifications, aside from those expressly stated, are possible and within the scope of the appending claims.

Abstract: A method and an apparatus for producing hyperpolarized samples for use in magnetic resonance imaging (MRI) are provided. The apparatus comprises an ultra-compact cryogen-free cryostat structure for use in polarizing a sample of selected material, wherein the cryostat structure comprises a central bore being adapted to be evacuated to create a vacuum region, and a cooling device inserted in the central bore or optionally close to the central bore for maintaining a selected temperature of the sample.

Abstract: A method and an apparatus for producing hyperpolarized samples for use in magnetic resonance imaging (MRI) are provided. The apparatus comprises an ultra-compact cryogen-free cryostat structure for use in polarizing a sample of selected material, wherein the cryostat structure comprises a central bore being adapted to be evacuated to create a vacuum region, and a cooling device inserted in the central bore or optionally close to the central bore for maintaining a selected temperature of the sample.