A system for powering a datacenter campus including a main direct current (DC) superconductor cable configured to receive direct current DC electrical power from an alternating current (AC) power grid through a AC-DC converter, a DC-DC hub connected to the main superconductor cable, and a plurality of secondary DC superconductor cables, wherein each secondary DC superconductor cable includes a first end electrically connected to the DC-DC hub and a second end electrically connected to server racks housed in a respective datacenter building of the datacenter campus.

A system for powering a datacenter campus including a main direct current (DC) superconductor cable configured to receive direct current DC electrical power from an alternating current (AC) power grid through a AC-DC converter, a DC-DC hub connected to the main superconductor cable, and a plurality of secondary DC superconductor cables, wherein each secondary DC superconductor cable includes a first end electrically connected to the DC-DC hub and a second end electrically connected to server racks housed in a respective datacenter building of the datacenter campus.

A reservoir computer. In some embodiments, the reservoir computer includes a discrete element transmission line and a readout circuit. The discrete element transmission line may include a plurality of shunt-connected Josephson junctions and a plurality of series-connected inductors connected to the shunt-connected Josephson junctions. The readout circuit may be connected to at least three nodes of the discrete element transmission line.

A reservoir computer. In some embodiments, the reservoir computer includes a discrete element transmission line and a readout circuit. The discrete element transmission line may include a plurality of shunt-connected Josephson junctions and a plurality of series-connected inductors connected to the shunt-connected Josephson junctions. The readout circuit may be connected to at least three nodes of the discrete element transmission line.

A cable for carrying electrical current in a coil of a magnet. The cable comprises a stack of tape assemblies. Each tape assembly has a length and a width, such that the length is much larger than the width, and each tape assembly comprises an HTS layer of anisotropic high temperature superconductor, HTS material, wherein a c-axis of the HTS layer is at a non-zero angle to a vector perpendicular to the plane of the HTS layer. The tape assemblies are stacked as a series of pairs, each pair comprising first and second HTS tape assemblies and a copper layer therebetween. The tape assemblies in each pair are arranged such that the c-axis of the HTS layer of the first HTS tape assembly of each pair have reflective symmetry to the c-axis of the HTS layer of the second HTS tape assembly of each pair about a plane which is parallel to and equidistant from each HTS layer.

A cable for carrying electrical current in a coil of a magnet. The cable comprises a stack of tape assemblies. Each tape assembly has a length and a width, such that the length is much larger than the width, and each tape assembly comprises an HTS layer of anisotropic high temperature superconductor, HTS material, wherein a c-axis of the HTS layer is at a non-zero angle to a vector perpendicular to the plane of the HTS layer. The tape assemblies are stacked as a series of pairs, each pair comprising first and second HTS tape assemblies and a copper layer therebetween. The tape assemblies in each pair are arranged such that the c-axis of the HTS layer of the first HTS tape assembly of each pair have reflective symmetry to the c-axis of the HTS layer of the second HTS tape assembly of each pair about a plane which is parallel to and equidistant from each HTS layer.

Disclosed are a superconductor having improved critical current density when exposed to high-energy neutron radiation and high magnetic fields, such as found in a compact nuclear fusion reactor, and a method of making the same. The method includes, prior to deployment in the exposure environment, irradiating a polycrystalline (e.g. cuprate) superconductor with ionic matter or neutrons at a cryogenic temperature to create “weak” magnetic flux pinning sites, such as point defects or small defect clusters. Irradiation temperature is chosen, for example as a function of the superconducting material, so that irradiation creates the beneficial flux pinning sites while avoiding detrimental widening of the boundaries of the crystalline grains caused by diffusion of the displaced atoms. Such a superconductor in a coated-conductor tape is expected to be beneficial when used, for example, as a toroidal field coil in a fusion reactor when cooled well below its critical temperature.

Disclosed are a superconductor having improved critical current density when exposed to high-energy neutron radiation and high magnetic fields, such as found in a compact nuclear fusion reactor, and a method of making the same. The method includes, prior to deployment in the exposure environment, irradiating a polycrystalline (e.g. cuprate) superconductor with ionic matter or neutrons at a cryogenic temperature to create “weak” magnetic flux pinning sites, such as point defects or small defect clusters. Irradiation temperature is chosen, for example as a function of the superconducting material, so that irradiation creates the beneficial flux pinning sites while avoiding detrimental widening of the boundaries of the crystalline grains caused by diffusion of the displaced atoms. Such a superconductor in a coated-conductor tape is expected to be beneficial when used, for example, as a toroidal field coil in a fusion reactor when cooled well below its critical temperature.

An airbridge includes first and second bridge abutments contacted with first and second conductors opposing each other via a gap, with a third conductor extending therein, first and second bridge piers rising from the first and second bridge abutments, and a bridge girder part supported by the first and second bridge piers in air to stride over the third conductor, wherein first and intersection edges, at which the first and second bridge abutment intersect with bases of the first and second bridge pier, is of a convex shape protruding toward one side from first and second virtual straight lines each connecting end points at which both sides of the first and second bridge abutments intersect with the first and second intersection edge, respectively.

An airbridge includes first and second bridge abutments contacted with first and second conductors opposing each other via a gap, with a third conductor extending therein, first and second bridge piers rising from the first and second bridge abutments, and a bridge girder part supported by the first and second bridge piers in air to stride over the third conductor, wherein first and intersection edges, at which the first and second bridge abutment intersect with bases of the first and second bridge pier, is of a convex shape protruding toward one side from first and second virtual straight lines each connecting end points at which both sides of the first and second bridge abutments intersect with the first and second intersection edge, respectively.