Patent application number | Description | Published |
20080231277 | NMR spectrometer - The present invention provides a highly-sensitive nuclear magnetic resonance (NMR) spectrometer which achieves a high Q factor using a superconductor, and concurrently which is provided with a probe antenna maintaining the magnetic homogeneity of the static magnetic field in a sample space. An antenna coil is fabricated by using a wire having a superconducting layer formed on the surface of a metal wire. | 09-25-2008 |
20080318794 | Superconductive wire and method for producing the same - A superconductive wire wherein the superconductive wire has a core portion containing magnesium diboride as the main component and a continuous metallic sheath firmly adhered to the core portion; the core portion is kept substantially vacuum; and the content of an inert gas such as an Ar gas contained in the core portion is in the range of 0.00002 to 10 ppm. Further, disclosed is a method for producing a superconductive wire, wherein the method comprises the steps of mixing powder of a source material constituting magnesium diboride to form a core portion of the superconductive wire in an inert gas, filling a pipe with the mixed material powder in vacuum environment, sealing the pipe with vacuum after filled with the material powder, forming magnesium diboride powder by heating the vacuum-sealed pipe (sheath), and forming the core portion by wiredrawing the pipe in the state where the magnesium diboride powder is sealed with vacuum, and the core portion firmly sticks to the wiredrawn metallic pipe. The core portion is kept vacuum, and the content of an inert gas contained in the core portion is in the range of 0.00002 to 10 ppm. | 12-25-2008 |
20090054242 | SUPERCONDUCTING WIRE, METHOD OF MANUFACTURING THE SAME, ANTENNA COIL FOR NMR PROBE AND NMR SYSTEM USING THE SAME - A superconducting wire, a method of manufacturing the superconducting wire, an antenna coil and a NMR system are disclosed. At least a superconducting material, a paramagnetic material and a diamagnetic material are closely attached and integrated with each other to form a longitudinally continuous wire. The paramagnetic material and the diamagnetic material are arranged in such a manner that the magnetic properties of the paramagnetic material and the diamagnetic material substantially offset each other in the longitudinal and diametrical directions. A superconducting layer is exposed to a part or the whole of the outer periphery of the wire. A low-resistance material layer is formed inside the superconducting layer. | 02-26-2009 |
20090176649 | Permanent Current Switch - There is disclosed a permanent current switch which has a high temperature margin and which is thermally stable and which securely performs a switching operation between a superconducting state and a normal conducting state. The permanent current switch of the present invention has a coiled superconducting wire and a heater wire which switches the superconducting wire between the superconducting state and the normal conducting state, the superconducting wire is a magnesium diboride superconducting wire having a high-resistance metal on an outer side and a magnesium diboride superconducting portion on an inner side and prepared by forming a superconducting metal on a layer between the high-resistance metal and the magnesium diboride superconducting portion, and the permanent current switch further comprises a superconductive connecting section superconductively connected to a lead wire guided from the superconducting wire and a superconducting wire for a wiring line. | 07-09-2009 |
20090267716 | SUPERCONDUCTING MAGNET - A persistent current switch in a superconducting magnet, includes: a winding part in which a superconducting wire is noninductively wound; a winding-heating heater provided around the winding part; a vessel provided around the winding part with a space; and an anti-convective material provided in the space between the vessel and the winding part. | 10-29-2009 |
20100245005 | SUPERCONDUCTING WIRE ROD, PERSISTENT CURRENT SWITCH, AND SUPERCONDUCTING MAGNET - The present invention provides a superconducting wire usable in a low magnetic field region of 2 T or lower and at a temperature of 4.2 K or lower and a connection structure and a connection method for permitting such a superconducting wire use. The present invention also provides a highly reliable device that uses a superconducting wire. A superconducting wire rod according to an embodiment of the present invention includes a plurality of superconducting metal filaments, which are embedded in a metallic matrix of a normal conductor. Each superconducting metal filament is provided with a barrier layer made of a metal that does not react with Sn at a temperature between 250° C. and 500° C. The barrier layer is preferably made of Ta, Mo, or Ta- or Mo-based alloy and 0.01 μm to 1 μm in thickness. | 09-30-2010 |
20110028327 | Superconducting Circuit, Production Method of Superconducting Joints, Superconducting Magnet, and Production Method of Superconducting Magnet - A superconducting circuit including a superconducting joint that joints a niobium titanium superconducting wire having a structure where a filament made of niobium titanium alloy is arranged in a matrix made of copper or copper alloy and other superconducting wire, in which a volume ratio or a surface density of an α-Ti precipitation in the niobium titanium alloy of the filament in the superconducting joint is smaller than the volume ratio or the surface density of the α-Ti precipitation in the niobium titanium alloy of the filament in the niobium titanium superconducting wire in a portion other than the superconducting joint. | 02-03-2011 |
20110218111 | HIGH TEMPERATURE SUPERCONDUCTING PARALLEL CONDUCTORS, HIGH TEMPERATURE SUPERCONDUCTING COIL USING THE SAME, AND HIGH TEMPERATURE SUPERCONDUCTING MAGNET - A parallel conductor comprising a bundle of a plurality of high temperature superconducting wire materials, ends of the wire materials being electrically connected to each other, wherein each of the high temperature wire materials has at least one short-circuited portion where the wire materials are connected by means of a non-superconducting conductive material, and portions other than the short-circuited portion being covered with an insulating material. | 09-08-2011 |
20120004110 | MAGNESIUM DIBORIDE SUPERCONDUCTING WIRE AND METHOD FOR MANUFACTURING SAME - It is an objective of the present invention to provide a method for manufacturing long lengths of MgB | 01-05-2012 |
20120094840 | REFRIGERATOR COOLING-TYPE SUPERCONDUCTING MAGNET - Magnetic field attenuation in a persistent current mode operation is prevented, heat generation at a connecting part between the persistent current switch and the superconducting coil, and increase in a cooling temperature of the superconducting coil in a current supplying mode is suppressed to a minimum. | 04-19-2012 |
20120306202 | Wind Power Generation System and Method for Additional Installation of Wind Power Generator Therein - The present invention provides a wind power generation system capable of suppressing an increase in output variation involved in additional installation of a wind power generator without the need for a large storage battery capacity. For example, an output variation rate at a predetermined period of an existing wind power generator in an existing wind-power generating station is determined in advance, and charge/discharge control for a storage battery device is performed to reduce an output variation in a system output of the existing wind power generator so that an output variation rate of the wind-power generating system after the additional installation of the wind power generator does not exceed the determined output variation rate of the existing wind power generator. | 12-06-2012 |