This superconducting magnet includes: a superconducting coil that is formed by winding a first superconducting wire rod; a second superconducting wire rod, which is disposed by being thermally in contact with and electrically insulated from the superconducting coil, and which has a superconducting transition temperature that is lower than that of the first superconducting wire rod; voltage terminals that are disposed at a plurality of areas of the second superconducting wire rod; a voltmeter connected to the voltage terminals; and a switch circuit connected to the voltmeter. The switch circuit interrupts a current when receiving an output from the voltmeter, the current being one that is to be supplied to the superconducting coil.

A superconducting magnet coil arrangement has a high-temperature superconductor (HTS) coil section (1a,1b,1c) in the form of a solenoid that is wound with an HTS tape conductor, and also has a field-shaping device comprising at least two field-shaping elements (2a,2b,2c). At least one respective field-shaping element is arranged adjoining each of the two axial ends of the HTS coil section, the field-shaping elements being configured in such a way that they reduce the field angle of the magnetic field generated by the magnet coil arrangement with respect to the axial direction in the region of the HTS coil section by at least 1.5°.

A superconducting coil, includes a coil body around which a superconducting wire is wound; an electrode member which includes a first surface, a second surface, a base portion, and an extension portion, the first surface facing an outer peripheral surface of the coil body, the second surface being positioned to be opposite to the first surface, the base portion being solder-joined to the superconducting wire of the coil body on the first surface, the extension portion extending from the second surface to the outside of the coil body, and an electrode superconducting wire which extends from the second surface of the electrode member toward the extension portion, and is solder-joined to the base portion and the extension portion.

The present disclosure relates to a superconducting apparatus. The embodiments may include a system comprising at least two electrical coil devices and a cooling apparatus for cooling the coil devices with the aid of a coolant. For example, a superconducting apparatus may include: two electrical coil devices, wherein at least one comprises a superconducting coil device; a cooling apparatus for the coil devices; and a first connecting line between the two electrical coil devices including both a first electrical conductor connecting the two coil devices and a first coolant pipe transporting coolant between the two coil devices.

A superconducting magnet device includes a superconducting coil, a radiation shield, a refrigeration unit, a vacuum case, an electrode member, and a conductive member. The vacuum case includes a case body housing the superconducting coil and a surrounding cover that surrounds the refrigeration unit. The conductive member includes a contact portion having a sleeve-shaped outer circumferential face and thermally contactable with an inner face of the surrounding cover via an insulating material. The surrounding cover includes a heat radiating part including at least a surface of a portion of the surrounding cover overlapping the contact portion in a radial direction of the surrounding cover. Thermal conductivity of the heat radiating part is higher than thermal conductivity of stainless steel.

A superconducting magnet device includes a superconducting coil, a radiation shield, a vacuum case, an electrode member, and a conductive member. The conductive member includes an oxidized lead disposed in the radiation shield. The vacuum case includes a case body having an outer opening and an outer lid that is detachably attachable to the case body. The radiation shield includes a shield body having an inner opening and an inner lid that is detachably attachable to the shield body. The inner opening is formed in the region of the shield body that overlaps a portion of the outer opening when viewed in the direction from the outer opening to the oxidized lead.

The invention provides for magnetic resonance imaging system (600) comprising a superconducting magnet (100) with a first current lead (108) and a second current lead (110) for connecting to a current ramping system (624). The magnet further comprises a vacuum vessel (104) penetrated by the first current lead and the second current lead. The magnet further comprises a magnet circuit (106) within the vacuum vessel. The magnet circuit has a first magnet circuit connection (132) and a second magnet circuit connection (134). The magnet further comprises a first switch (120) between the first magnet connection and the first current lead and a second switch (122) between the second magnet connection and the second current lead. The magnet further comprises a first current shunt (128) connected across the first switch and a second current shunt (130) connected across the second switch. The magnet further comprises a first rigid coil loop (124) operable to actuate the first switch. The first rigid coil loop forms a portion of the first electrical connection. The magnet further comprises a second rigid coil loop (126) operable to actuate the second switch. The second rigid coil loop forms a portion of the second electrical connection.

Systems and devices for providing differential input/output communication with a superconducting device are described. Each differential I/O communication is electrically filtered using a respective tubular filter structure incorporating superconducting lumped element devices and high frequency dissipation by metal powder epoxy. A plurality of such tubular filter structures is arranged in a cryogenic, multi-tiered assembly further including structural/thermalization supports and a device sample holder assembly for securing a device sample, for example a superconducting quantum processor. The interface between the cryogenic tubular filter assembly and room temperature electronics is achieved using hermetically sealed vacuum feed-through structures designed to receive flexible printed circuit board cable.

There is described a magnet assembly comprising a superconducting coil, a cryogenic system, a DC voltage source, an SMPS, current leads, and a controller. The cryogenic system comprises a cryostat and is configured to maintain the superconducting coil at an operating temperature below the critical temperature of the superconductor. The DC voltage is source located outside the cryostat. The SMPS is located inside the cryostat and configured to supply power from the DC voltage source to the superconducting coil. The SMPS comprises a voltage step-down transformer having a primary and a secondary winding. The current leads connect the DC voltage source to the SMPS. The controller is configured to cause the SMPS to supply a first amount of power to the magnet in order to ramp up the magnet to operating current, and a second amount of power to the magnet during steady state operation of the magnet, wherein the first amount of power is greater than the second amount of power.

A superconducting joint arrangement for superconducting magnets, having an elongate joint arranged between superconducting filaments of superconducting wires of one or more superconducting coils, and excess wire provided between the elongate joint and the one or more superconducting coils.