Abstract: A superconducting magnet apparatus comprises a superconducting coil, a superconducting magnet cooling module comprising a heat shunt for thermally contacting the superconducting coil, and a cooling channel for cooling the heat shunt by contacting the heat shunt. A refrigerator cools the cooling channel and the heat shunt comprises a contact portion surrounding at least a part of a surface of the superconducting coil, and a protruding portion externally extending from the contact portion to contact the cooling channel.

Abstract: A cooling system and a superconducting magnet apparatus employing the same. The cooling system includes: a thermal shield unit for thermally shielding a superconducting coil; a recondensing unit for recondensing an extremely low temperature refrigerant that cools down the superconducting coil. A cryocooler includes a body and an end portion extending from the body and inserted into the recondensing unit in order to directly contact the extremely low temperature refrigerant. A refrigerator chamber penetrates through the thermal shield unit and to which the cryocooler is attachably and detachably provided. A sealing member is disposed between the cryocooler and the refrigerator chamber to seal the recondensing unit.

Abstract: A magnetic resonance imaging apparatus has a plurality of cooling pipes disposed while being spaced apart from each other along a longitudinal length of the coil assembly, a first manifold connected to a lower end of the plurality of cooling pipes to distribute and supply a coolant to the plurality of cooling pipes, and a second manifold connected to an upper end of the plurality of cooling pipes to be supplied with the coolant from the plurality of cooling pipes, thereby able to evenly cool off the coil assembly in a longitudinal direction thereof.

Abstract: Provided is a superconductive electromagnet apparatus including a thermal anchor, a plurality of wires and a cryogenic cooling device which cools the thermal anchor. The thermal anchor includes a body part, at least one connecting part disposed on a surface of the body part and made up of a conductive material. The plurality of wires is connected to the connecting part.

Abstract: A superconducting magnet apparatus comprises a superconducting coil, a superconducting magnet cooling module comprising a heat shunt for thermally contacting the superconducting coil, and a cooling channel for cooling the heat shunt by contacting the heat shunt. A refrigerator cools the cooling channel and the heat shunt comprises a contact portion surrounding at least a part of a surface of the superconducting coil, and a protruding portion externally extending from the contact portion to contact the cooling channel.

Abstract: A cryocooler system and a superconducting magnet apparatus having the cryocooler system include a cryocooler having a cool stage that cools a heat shielding unit and a thermal inertia that thermally contacts the cool stage of the cryocooler and has a high heat capacity. The cryocooler system reduces a temperature-increasing rate in a current lead by using the thermal inertia member when the temperature in the current lead is increased due to heat generated when an electrical current applied to a superconducting coil is ramped-up or ramped-down.

Abstract: A superconductive electromagnet apparatus and a magnetic resonance imaging apparatus including the superconductive electromagnet apparatus are provided. The superconductive electromagnet apparatus includes a thermal anchor, a cryogenic cooling device which cools the thermal anchor, and at least one connecting ring into which the thermal anchor is inserted and a plurality of wires which are connected to the connecting ring.

Abstract: A cooling system and a superconducting magnet apparatus employing the same. The cooling system includes: a thermal shield unit for thermally shielding a superconducting coil; a recondensing unit for recondensing an extremely low temperature refrigerant that cools down the superconducting coil. A cryocooler includes a body and an end portion extending from the body and inserted into the recondensing unit in order to directly contact the extremely low temperature refrigerant. A refrigerator chamber penetrates through the thermal shield unit and to which the cryocooler is attachably and detachably provided. A sealing member is disposed between the cryocooler and the refrigerator chamber to seal the recondensing unit.

Abstract: Provided are a superconducting magnet apparatus with a switch that automatically connects or disconnects an external power source to a superconducting coil, and a method of controlling the same. The superconducting magnet apparatus includes a superconducting coil that generates a magnetic field when an electric current from an external power source is applied thereto, and a switch that supplies or shuts off an electric current output from the external power source by connecting or disconnecting the superconducting coil to the external power source.

Abstract: A magnetic resonance imaging apparatus has a plurality of cooling pipes disposed while being spaced apart from each other along a longitudinal length of the coil assembly, a first manifold connected to a lower end of the plurality of cooling pipes to distribute and supply a coolant to the plurality of cooling pipes, and a second manifold connected to an upper end of the plurality of cooling pipes to be supplied with the coolant from the plurality of cooling pipes, thereby able to evenly cool off the coil assembly in a longitudinal direction thereof.

Abstract: A magnetic resonance imaging apparatus has a plurality of cooling pipes disposed while being spaced apart from each other along a longitudinal length of the coil assembly, a first manifold connected to a lower end of the plurality of cooling pipes to distribute and supply a coolant to the plurality of cooling pipes, and a second manifold connected to an upper end of the plurality of cooling pipes to be supplied with the coolant from the plurality of cooling pipes, thereby able to evenly cool off the coil assembly in a longitudinal direction thereof.

Abstract: A demountable current lead unit and a superconducting magnet apparatus employing the same include an inserting module that is demountably inserted into a superconducting magnet apparatus and electrode leads electrically connected to a superconducting coil and cooling pipes disposed in the respective electrode leads; a service module including a power supply source for supplying a current to the electrode leads, a refrigerant storage tank for supplying a refrigerant to the cooling pipe, and a controller for controlling a flow of the refrigerant to the cooling pipe; and a transmission pipe line for connecting the inserting module and the service module.

Abstract: Provided is a superconductive electromagnet apparatus including a thermal anchor, a plurality of wires and a cryogenic cooling device which cools the thermal anchor. The thermal anchor includes a body part, at least one connecting part disposed on a surface of the body part and made up of a conductive material. The plurality of wires is connected to the connecting part.

Abstract: A demountable current lead unit and a superconducting magnet apparatus employing the same include an inserting module that is demountably inserted into a superconducting magnet apparatus and electrode leads electrically connected to a superconducting coil and cooling pipes disposed in the respective electrode leads; a service module including a power supply source for supplying a current to the electrode leads, a refrigerant storage tank for supplying a refrigerant to the cooling pipe, and a controller for controlling a flow of the refrigerant to the cooling pipe; and a transmission pipe line for connecting the inserting module and the service module.

Abstract: A cooling arrangement for an electrical connector for a superconductor including at least one superconductor arranged in a container and the container is arranged in a vacuum chamber. A cryocooler is thermally connected to the container to cool the container and the contents of the container including the superconductor. The electrical connector extends through the vacuum chamber and the container to the at least one superconductor. The electrical connector has a thermally conducting and electrically insulating arrangement. The thermally conducting and electrically insulating arrangement comprises an electrically insulating member contacting the electrical connector. A thermally conducting member contacts the electrically insulating member and the thermally conducting member is thermally connected to the to cool the electrical connector.

Abstract: A cooling arrangement for an electrical connector for a superconductor including at least one superconductor arranged in a container and the container is arranged in a vacuum chamber. A cryocooler is thermally connected to the container to cool the container and the contents of the container including the superconductor. The electrical connector extends through the vacuum chamber and the container to the at least one superconductor. The electrical connector has a thermally conducting and electrically insulating arrangement. The thermally conducting and electrically insulating arrangement comprises an electrically insulating member contacting the electrical connector. A thermally conducting member contacts the electrically insulating member and the thermally conducting member is thermally connected to the to cool the electrical connector.