Processes Of Producing Or Treating High Temperature (tc Greater Than 30 K) Superconductor Material Or Superconductor Containing Products Or Precursors Thereof Patents (Class 505/300)
  • Patent number: 9987699
    Abstract: A method and system for electrochemically machining a hollow body of a metal or a metal alloy. An electrode is positioned within a hollow body including a metal or metal alloy, where the hollow body has a variable internal diameter. The hollow body is oriented vertically, with the electrode oriented vertically therein. The hollow body is at least partially filled with an aqueous, acidic electrolyte solution, the electrolyte solution being devoid of hydrofluoric acid and having a viscosity less than 15 cP. An electric current is passed between the hollow body and the electrode, where the electric current includes a plurality of anodic pulses and a plurality of cathodic pulses, and where the cathodic pulses are interposed between at least some of the anodic pulses.
    Type: Grant
    Filed: December 30, 2014
    Date of Patent: June 5, 2018
    Assignee: FARADAY TECHNOLOGY, INC.
    Inventors: E. Jennings Taylor, Maria E. Inman, Timothy Hall
  • Patent number: 9674936
    Abstract: Provided is a superconducting accelerating cavity 30 including: a cavity main body 10 formed of a superconducting material into a cylindrical shape; and a refrigerant tank 20 installed around the cavity main body 10 and storing a refrigerant which is supplied from the outside through a supply port 20a into a space formed between the refrigerant tank and the outer circumferential surface of the cavity main body 10, wherein the outer circumferential surface of the cavity main body 10 is coated with a metal coating layer 10a having a higher conductivity than the superconducting material.
    Type: Grant
    Filed: September 24, 2014
    Date of Patent: June 6, 2017
    Assignee: MITSUBISHI HEAVY INDUSTRIES MECHATRONICS SYSTEMS, LTD
    Inventor: Hiroshi Hara
  • Patent number: 9006147
    Abstract: An electrochemical finishing system for super conducting radio frequency (SCRF) cavities including a low viscosity electrolyte solution that is free of hydrofluoric acid, an electrode in contact with the electrolyte solution, the SCRF cavity being spaced apart from the electrode and in contact with the electrolyte solution and a power source including a first electrical lead electrically coupled to the electrode and a second electrical lead electrically coupled to the cavity, the power source being configured to pass an electric current between the electrode and the workpiece, wherein the electric current includes anodic pulses and cathodic pulses, and wherein the cathodic pulses are interposed between at least some of the anodic pulses. The SCRF cavity may be vertically oriented during the finishing process.
    Type: Grant
    Filed: July 11, 2012
    Date of Patent: April 14, 2015
    Assignee: Faraday Technology, Inc.
    Inventors: E. Jennings Taylor, Maria E. Inman, Timothy Hall
  • Patent number: 8993485
    Abstract: Disclosed is a splicing method of two second-generation ReBCO high temperature superconductor coated conductors (2G ReBCO HTS CCs), in which, with stabilizing layers removed from the two strands of 2G ReBCO HTS CCs through chemical wet etching or plasma dry etching, surfaces of the two high temperature superconducting layers are brought into direct contact with each other and heated in a splicing furnace in a vacuum for micro-melting portions of the surfaces of the high temperature superconducting layers to permit inter-diffusion of ReBCO atoms such that the surfaces of the two superconducting layers can be spliced to each other and oxygenation annealing for recovery of superconductivity which was lost during splicing.
    Type: Grant
    Filed: October 29, 2012
    Date of Patent: March 31, 2015
    Assignee: K.Joins
    Inventors: Young-Kun Oh, Hee-Sung Ann, Myung-Whon Lee, Hai-Gun Lee
  • Publication number: 20150065350
    Abstract: A coil arrangement formed from a stripe-shaped superconductor assembly is composed of metal substrate (3) and at least one superconductor layer (4, 5) wherein the coil arrangement is such, that in adjacent turns current flow is in opposite direction in operation, and wherein the substrate side (3) is in a region without magnetic field by sandwiching the substrate side (3) between superconductor layers (4, 5) of same current direction during operation.
    Type: Application
    Filed: June 13, 2014
    Publication date: March 5, 2015
    Inventor: Achim Hobl
  • Patent number: 8965467
    Abstract: The present disclosure relates to a superconducting rotating electrical machine and a manufacturing method for a high temperature superconducting film thereof. The superconducting rotating electrical machine includes a stator, and a rotor rotatable with respect to the stator, the rotor having a rotary shaft and a rotor winding. Here, the rotor winding includes tubes disposed on a circumference of the rotary shaft and each forming a passage for a cooling fluid therein, superconducting wires accommodated within the tubes, and a cooling fluid flowing through the inside of the tubes. This configuration may allow for direct heat exchange between the superconducting wires and a refrigerant, resulting in improvement of heat exchange efficiencies of the superconducting wires.
    Type: Grant
    Filed: February 21, 2013
    Date of Patent: February 24, 2015
    Assignee: Doosan Heavy Industries & Construction Co., Ltd.
    Inventors: Yeong Chun Kim, Jin Hong Joo, Tae Sun Moon, Heui Joo Park, Woon Sik Kwon, Jung Hyun Lee, Hyo Jung Kim, Jae Deuk Lee, Sung Hwan Lim
  • Publication number: 20150045228
    Abstract: A radio frequency-assisted fast superconducting switch is described. A superconductor is closely coupled to a radio frequency (RF) coil. To turn the switch “off,” i.e., to induce a transition to the normal, resistive state in the superconductor, a voltage burst is applied to the RF coil. This voltage burst is sufficient to induce a current in the coupled superconductor. The combination of the induced current with any other direct current flowing through the superconductor is sufficient to exceed the critical current of the superconductor at the operating temperature, inducing a transition to the normal, resistive state. A by-pass MOSFET may be configured in parallel with the superconductor to act as a current shunt, allowing the voltage across the superconductor to drop below a certain value, at which time the superconductor undergoes a transition to the superconducting state and the switch is reset.
    Type: Application
    Filed: April 9, 2013
    Publication date: February 12, 2015
    Applicant: Brookhaven Science Associates, LLC
    Inventors: Vyacheslav Solovyov, Qiang Li
  • Patent number: 8951936
    Abstract: Provided is a method of manufacturing a superconducting accelerator cavity in which a plurality of half cells having opening portions (equator portions and iris portions) at both ends thereof in an axial direction are placed one after another in the axial direction, contact portions where the corresponding opening portions come into contact with each other are joined by welding, and thus, a superconducting accelerator cavity is manufactured, the half cells to be joined are arranged so that the axial direction thereof extends in a vertical direction; and concave portions that are concave towards an outer side are also formed at inner circumferential surfaces located below the contact portions of the half cells positioned at a bottom; and the contact portions are joined from outside by penetration welding.
    Type: Grant
    Filed: May 9, 2011
    Date of Patent: February 10, 2015
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Katsuya Sennyu, Hiroshi Hara, Takehisa Okuda
  • Patent number: 8946126
    Abstract: A precursor material for the preparation of superconductors based on Bi2Sr2Ca1Cu2O8+? wherein the precursor material which is as close to equilibrium state as possible, i.e., has less than 5% in average 2201 intergrowths in the 2212 phase; in particular, the present invention relates to a precursor material, which is converted to the final conductor by partial melt processing, as well as to a process for the production of the precursor material and the use of the precursor material for preparing superconductors based on Bi2Sr2Ca1Cu2O8+?.
    Type: Grant
    Filed: November 21, 2005
    Date of Patent: February 3, 2015
    Assignee: Nexans
    Inventors: Joachim Bock, Jurgen Ehrenberg, Mark Rikel
  • Publication number: 20150031547
    Abstract: A method is disclosed for electrically conductively connecting two superconductive cables. The ends of the two cables are arranged next to each other and parallel to one another, in such a way that their free ends point in the opposite direction, and their conductors are located at least approximately on the same level next to each other. Two conductors of the two cables are electrically conductively connected to each other through electrical contact elements (10, 11, 12). The screens (6) of the two cables (1, 2) are connected through by separate contact elements (13, 14, 15) and the two cable ends are treated in this manner for constructing a transmission length for electrical energy are arranged jointly in a housing (16) of a cryostat so that during operation of the transmission length, a flowable cooling agent with electrically insulating properties flows through a housing (16) of a cryostat.
    Type: Application
    Filed: July 24, 2014
    Publication date: January 29, 2015
    Inventors: Mark Stemmle, Frank Schmidt
  • Publication number: 20150018220
    Abstract: A superconducting magnet and method for making a superconducting magnet, are presented. The superconducting magnet is made by forming a coil from windings of a first wire comprising a reacted MgB2 monofilament, filling a cavity of a stainless steel billet with a Mg+B powder. Monofilament ends of the first wire and a similar second wire are sheared at an acute angle and inserted into the billet. A copper plug configured to partially fill the billet cavity is inserted into the billet cavity. A portion of the billet adjacent to the plug and the wires is sealed with a ceramic paste.
    Type: Application
    Filed: July 14, 2014
    Publication date: January 15, 2015
    Applicant: Massachusetts Institute of Technology
    Inventors: Seungyong Hahn, Yukikazu lwasa, Juan Bascunan, John Peter Voccio, Jiayin Ling, Jungbin Song, YoungJae Kim
  • Publication number: 20140364319
    Abstract: In some implementations of the invention, existing extremely low resistance materials (“ELR materials”) may be modified and/or new ELR materials may be created by enhancing (in the case of existing ELR materials) and/or creating (in the case of new ELR materials) an aperture within the ELR material such that the aperture is maintained at increased temperatures so as not to impede propagation of electrical charge there through. In some implementations of the invention, as long as the propagation of electrical charge through the aperture remains unimpeded, the material should remain in an ELR state; otherwise, as the propagation of electrical charge through the aperture becomes impeded, the ELR material begins to transition into a non-ELR state.
    Type: Application
    Filed: February 28, 2014
    Publication date: December 11, 2014
    Applicant: Ambature, Inc.
    Inventor: Douglas J. Gilbert
  • Publication number: 20140274726
    Abstract: A method for producing a composite superconductor includes: a structure forming process of forming a structure including a metal covering member (20) including at least one to-be-joined portion, a superconductor (30) arranged inside the metal covering member, and a reinforcing member (40) arranged between the superconductor (30) and the at least one to-be-joined portion; and a joining process of joining thereafter the at least one to-be-joined portion.
    Type: Application
    Filed: September 4, 2012
    Publication date: September 18, 2014
    Applicants: INTER-UNIVERSITY RESEARCH INSTITUTE CORPORATION NATIONAL INSTITUTES OF NATURAL SCIENCES, FURUKAWA ELECTRIC CO., LTD.
    Inventors: Masahiro Sugimoto, Hirokazu Tsubouchi, Hitoshi Shimizu, Toshiya Okada, Toshirou Sakai, Kazuya Takahata, Hitoshi Tamura, Toshiyuki Mito
  • Publication number: 20140221213
    Abstract: A superconducting cable includes a superconducting conductor layer; and a flow path of a coolant cooling the superconducting conductor layer to a superconducting state. This cable includes a core including the superconducting conductor layer and an insulating layer; a coolant tube forming a coolant flow path and arranged in parallel to the core so as to cool the superconducting conductor layer; and a housing tube of the core and the coolant tube.
    Type: Application
    Filed: June 25, 2012
    Publication date: August 7, 2014
    Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventor: Ryosuke Fukuda
  • Patent number: 8748350
    Abstract: A method for making a superconducting article includes the steps of providing a biaxially textured substrate. A seed layer is then deposited. The seed layer includes a double perovskite of the formula A2B?B?O6, where A is rare earth or alkaline earth metal and B? and B? are different rare earth or transition metal cations. A superconductor layer is grown epitaxially such that the superconductor layer is supported by the seed layer.
    Type: Grant
    Filed: April 15, 2011
    Date of Patent: June 10, 2014
    Assignees: UT-Battelle, University of Tennessee Research Center
    Inventors: Amit Goyal, Mariappan Paranthaman, Sung-Hun Wee
  • Patent number: 8644898
    Abstract: A device includes a circuitry layer having one or more circuitry regions and a superconducting layer having a plurality of naturally-occurring defects. Potential wells are formed in the superconducting layer and located outside of the bounds of the circuitry regions. A pattern of engineered defects is formed in the superconducting layer and are configured such that, upon encountering a pulse of electromagnetic energy applied at a high potential region of the superconducting layer prior to energizing any circuits within the circuitry layer and when the superconducting layer is in a superconducting state, magnetic flux trapped within the naturally-occurring defects is directed to one or more of the potential wells.
    Type: Grant
    Filed: May 1, 2012
    Date of Patent: February 4, 2014
    Assignee: The United States of America as Represented by the Secretary of the Navy
    Inventors: Marcio C. De Andrade, Anna M. Leese De Escobar
  • Publication number: 20140018244
    Abstract: An electrochemical finishing system for super conducting radio frequency (SCRF) cavities including a low viscosity electrolyte solution that is free of hydrofluoric acid, an electrode in contact with the electrolyte solution, the SCRF cavity being spaced apart from the electrode and in contact with the electrolyte solution and a power source including a first electrical lead electrically coupled to the electrode and a second electrical lead electrically coupled to the cavity, the power source being configured to pass an electric current between the electrode and the workpiece, wherein the electric current includes anodic pulses and cathodic pulses, and wherein the cathodic pulses are interposed between at least some of the anodic pulses. The SCRF cavity may be vertically oriented during the finishing process.
    Type: Application
    Filed: July 11, 2012
    Publication date: January 16, 2014
    Applicant: FARADAY TECHNOLOGY, INC.
    Inventors: E. Jennings Taylor, Maria E. Inman, Timothy Hall
  • Patent number: 8630687
    Abstract: In one aspect, a method is disclosed of making a material, the method including synthesizing a composition Sr2RuO4-ySy where y is in the range of, e.g., 0.1-1.2. In some embodiments y is in the range of 0.1-0.6. In some such embodiments, the material may exhibit a strong diamagnetic signal, e.g. of up to 5% of absolute diamagnetism (?=?¼?) or more (e.g., at temperatures ranging from 4K-300K). In some embodiments, the material may exhibit high temperature superconductivity.
    Type: Grant
    Filed: September 28, 2012
    Date of Patent: January 14, 2014
    Assignee: AVD Conduction
    Inventors: Armen Gulian, Vahan Nikoghosyan, Dennis Winegarner
  • Publication number: 20130225415
    Abstract: The present disclosure relates to a superconducting rotating electrical machine and a manufacturing method for a high temperature superconducting film thereof. The superconducting rotating electrical machine includes a stator, and a rotor rotatable with respect to the stator, the rotor having a rotary shaft and a rotor winding. Here, the rotor winding includes tubes disposed on a circumference of the rotary shaft and each forming a passage for a cooling fluid therein, superconducting wires accommodated within the tubes, and a cooling fluid flowing through the inside of the tubes. This configuration may allow for direct heat exchange between the superconducting wires and a refrigerant, resulting in improvement of heat exchange efficiencies of the superconducting wires.
    Type: Application
    Filed: February 21, 2013
    Publication date: August 29, 2013
    Applicant: DOOSAN HEAVY INDUSTRIES & CONSTRUCTION CO., LTD.
    Inventor: DOOSAN HEAVY INDUSTRIES & CONSTRUCTION CO., LTD.
  • Publication number: 20130157865
    Abstract: A system and method for magnetic field distortion compensation includes a cryostat for a magnetic resonance imaging (MRI) system. The cryostat includes a vacuum casing having a vacuum therein. A cryogen vessel is disposed within the casing, the vessel having a coolant therein. A thermal shield is disposed between the vacuum casing and the cryogen vessel. An eddy current compensation assembly is disposed within the casing. The eddy current compensation assembly includes a plurality of electrically conductive loops formed on one of the vacuum casing, the cryogen vessel, and the thermal shield and constructed to mitigate vibration-induced eddy currents in the MRI system.
    Type: Application
    Filed: December 24, 2012
    Publication date: June 20, 2013
    Applicant: GENERAL ELECTRIC COMPANY
    Inventor: General Electric Company
  • Publication number: 20130090245
    Abstract: A superconducting joint that electrically joins superconducting wires has a block of thermally and electrically conductive material that is coated with an electrically isolated coating that covers at least a part of a surface of the block. Molded semiconducting joint material is provided in contact with the electrically isolating coating. Superconducting filaments of the superconducting wires are embedded within the molded superconducting joint material.
    Type: Application
    Filed: June 13, 2011
    Publication date: April 11, 2013
    Applicant: Siemens PLC
    Inventor: Michael Simpkins
  • Publication number: 20130085070
    Abstract: In one aspect, a method is disclosed of making a material, the method including synthesizing a composition Sr2RuO4-ySy where y is in the range of, e.g., 0.1-1.2. In some embodiments y is in the range of 0.1-0.6. In some such embodiments, the material may exhibit a strong diamagnetic signal, e.g. of up to 5% of absolute diamagnetism (?=?¼?) or more (e.g., at temperatures ranging from 4K-300K). In some embodiments, the material may exhibit high temperature superconductivity.
    Type: Application
    Filed: September 28, 2012
    Publication date: April 4, 2013
    Applicant: ADV CONDUCTION
    Inventor: ADV Conduction
  • Publication number: 20130045870
    Abstract: An International Organization for Standardization (ISO) shipping container 10 includes a cryogenic refrigeration system 14 for cryogenically cooling superconducting magnet(s) 12A, 12B during transit. The cryogenic refrigeration system 14 monitors the temperature and/or pressure of the superconducting magnet(s) and circulates a refrigerant to the superconducting magnet(s) to maintain cryogenic temperatures in superconducting coils. A power supply 16, provided by a transportation vehicle, connects to the cryogenic refrigeration system via a power inlet 20 which is accessible from the exterior of the shipping container. The superconducting magnet(s) are suspended within the shipping container which is then loaded onto the transportation vehicle. The external power supply is connected to the cryogenic refrigeration system such that refrigerant is circulated to a cold head 22A, 22B of each superconducting magnet.
    Type: Application
    Filed: April 28, 2011
    Publication date: February 21, 2013
    Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.
    Inventors: John R. Rogers, Edwardus Maria Bek
  • Patent number: 8361930
    Abstract: The invention relates to a method for producing a high temperature superconductor (HTSC) from a strip including an upper side precursor layer and which, for continuous sintering of the precursor layer within a furnace in the presence of a fed-in reaction gas, is drawn across a support. A furnace for performing the method is also described.
    Type: Grant
    Filed: April 6, 2011
    Date of Patent: January 29, 2013
    Assignee: BASF SE
    Inventor: Michael Baecker
  • Patent number: 8361931
    Abstract: A method for preparing yttrium barium copper oxide (“YBCO”; “Y-123”; YBa2Cu3O7-x) superconducting nanoparticles is disclosed. The YBCO superconducting nanoparticles are prepared via a solid-state reaction by a solid-state reaction of an yttrium precursor, a barium precursor, and a copper precursor. One or more of the precursors are metal chelate compounds having acetylacetone ligands, which are highly stable and have a high compatibility with the other precursors.
    Type: Grant
    Filed: January 4, 2012
    Date of Patent: January 29, 2013
    Inventors: Masoud Salavati-Niasari, Sima Alikhanzadeh-Arani
  • Publication number: 20130012397
    Abstract: Provided is a method of manufacturing a superconducting accelerator cavity in which a plurality of half cells having opening portions (equator portions and iris portions) at both ends thereof in an axial direction are placed one after another in the axial direction, contact portions where the corresponding opening portions come into contact with each other are joined by welding, and thus, a superconducting accelerator cavity is manufactured, the half cells to be joined are arranged so that the axial direction thereof extends in a vertical direction; and concave portions that are concave towards an outer side are also formed at inner circumferential surfaces located below the contact portions of the half cells positioned at a bottom; and the contact portions are joined from outside by penetration welding.
    Type: Application
    Filed: May 9, 2011
    Publication date: January 10, 2013
    Inventors: Katsuya Sennyu, Hiroshi Hara, Takehisa Okuda
  • Publication number: 20120264614
    Abstract: In order to attach an add-on unit to a low temperature pressure chamber unit having a low temperature pressure chamber, and an external housing surrounding the low temperature pressure chamber, an attachment device is used to attach at least one add-on unit to the external housing, and the attachment device has an adhesive unit designed for the arrangement and/or attachment of the at least one add-on unit to the external housing.
    Type: Application
    Filed: April 12, 2012
    Publication date: October 18, 2012
    Inventors: PETER DISTLER, BERND MACIEJEWSKI, CONNY PATZAK
  • Publication number: 20120258861
    Abstract: A twisted track interferometer (TTI) for producing magic states is disclosed. The spin of ½-vortices may be exploited to produce magic states. The disclosed “twisted track interferometer” is a “topological twist” on the conventional Pabre-Pero interferometer adapted to topological superconductors. In the disclosed TTI, the probe particles may be Josephson vortices (JVs). JVs are estimated to be light and will tunnel more easily than Abrikosov vortices. Also, the disclosed TTI does not require multiple tunneling events. Rather, the JVs are propelled down thin insulating tracks within a 2D topological p-wave superconductor by a Magnus force generated by a tunneling supercurrent across the tracks. The JVs encounter tunneling junctions as they pass into the arms of the TTI.
    Type: Application
    Filed: December 27, 2011
    Publication date: October 11, 2012
    Applicant: MICROSOFT CORPORATION
    Inventors: Parsa Bonderson, Lukasz Fidkowski, Michael Freedman, Roman Lutchyn, Chetan Nayak
  • Publication number: 20120252679
    Abstract: The invention provides a flux pump that includes a plurality of superconducting materials arranged to form at least one superconducting loop, at least one of the components being made of a superconductor that includes particles made of a superconductive material and a conductive material selected to be driven to a superconductive state when in proximity to the superconductive material, an unbroken section of the conductive material being located sufficiently close to a plurality of the particles to be driven to a superconductive state by the superconductive material.
    Type: Application
    Filed: March 28, 2012
    Publication date: October 4, 2012
    Applicant: Grid Logic Incorporated
    Inventor: Matthew J. Holcomb
  • Publication number: 20120184446
    Abstract: A process produces a connecting structure between two superconductors, in particular magnesium diboride superconductors embodied as a superconducting core wire surrounded by normally conducting metal. A substance which reduces the melting point of magnesium is admixed to a substance mixture including magnesium and boron, and the exposed ends of the core wires are brought into contact with the substance mixture, which is caused to react in situ at a reaction temperature corresponding to the lower melting point to give magnesium diboride.
    Type: Application
    Filed: September 29, 2010
    Publication date: July 19, 2012
    Applicant: Siemens Aktiengesellschaft
    Inventors: Antje Drechsler, Wilfried Goldacker, Marijn Pieter Oomen, Jacob Johan Rabbers, Sonja Schlachter
  • Publication number: 20120178631
    Abstract: A chemically doped boron coating is applied by chemical vapor deposition to a silicon carbide fiber and the coated fiber then is exposed to magnesium vapor to convert the doped boron to doped magnesium diboride and a resultant superconductor.
    Type: Application
    Filed: March 20, 2012
    Publication date: July 12, 2012
    Applicant: SPECIALTY MATERIALS, INC.
    Inventors: Raymond J. Suplinskas, Janet Suplinskas
  • Publication number: 20120172231
    Abstract: A composite superconductor and methods of providing same include a superconductor powder dispersed within a conductive polymer matrix.
    Type: Application
    Filed: December 31, 2010
    Publication date: July 5, 2012
    Inventors: Carlton Anthony Taft, Gerson Silva Paiva, Nelson Cesar Chaves Pinto Furtado
  • Publication number: 20120172232
    Abstract: The present invention relates to a nanorod-containing precursor powder, a nanorod-containing superconductor bulk and a method for manufacturing the same. The method for manufacturing a nanorod-containing precursor powder includes the following steps: providing a precursor powder; and forming a plurality of nanorods on particle surfaces of the precursor powder. Accordingly, the present invention can significantly enhance critical current density and pinning force.
    Type: Application
    Filed: July 6, 2011
    Publication date: July 5, 2012
    Applicant: National Cheng Kung University
    Inventors: In-Gann Chen, Chun-Chih Wang, Shih-Hsun Huang
  • Publication number: 20120165200
    Abstract: Method for joining wires using low resistivity joints is provided. More specifically, methods of joining one or more wires having superconductive filaments, such as magnesium diboride filaments, are provided. The wires are joined by a low resistivity joint to form wires of a desired length for applications, such in medical imaging applications.
    Type: Application
    Filed: March 9, 2012
    Publication date: June 28, 2012
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Judson Sloan Marte, Xianrui Huang, Evangelos Trifon Laskaris, Bruce Alan Knudsen, Thomas Robert Raber, Robert John Zabala, James William Bray, Paul Shadforth Thompson, Sergio Paulo Martins Loureiro, Curtis Alan Johnson, Sylvia Marie Decarr
  • Publication number: 20120157319
    Abstract: A high-temperature superconducting magnetic sensor having a superconducting layer formed on a substrate and a plurality of superconducting quantum interference devices fabricated on the superconducting layer, which includes: a plurality of input coils that are formed on the superconducting layer and connected to or magnetically coupled with each of the plurality of the superconducting quantum interference devices; a pickup coil that is formed on the superconducting layer and connected so as to form a closed loop together with the plurality of the input coils; and a plurality of trimming wires that are formed on the superconducting layer and can be cut off, while making a short-circuit between both ends of each of the plurality of the input coils.
    Type: Application
    Filed: December 15, 2011
    Publication date: June 21, 2012
    Applicant: International Superconductivity Technology Center
    Inventors: Akira TSUKAMOTO, Seiji Adachi, Yasuo Oshikubo, Keiichi Tanabe
  • Patent number: 8142881
    Abstract: A superconductor for mitigating the effects of local current disruptions in a superconducting filament. The superconductor comprises superconducting filaments covered by a medium in electrical communication with the filaments. The covering medium has anisotropic conductivity, the conductivity in a direction substantially aligned with the filaments being selected to stabilize the superconductor near the critical temperature, and the conductivity of the covering in a direction substantially perpendicular to the filaments being selected to permit controlled current sharing between the filaments, especially when a filament is compromised, while simultaneously limiting alternating current (ac) losses. In various embodiments, the covering comprises a wire mesh having longitudinal wires made of a first material having a first conductivity, and transverse wires made of a second material having a second conductivity, different from the first conductivity.
    Type: Grant
    Filed: July 27, 2010
    Date of Patent: March 27, 2012
    Assignee: American Superconductor Corporation
    Inventor: Cornelis Leo Hans Thieme
  • Publication number: 20120035059
    Abstract: The invention relates to an assembly (1, 35, 71) of metal elements constituting a precursor for a superconductor. The assembly comprises at least one conductor element (5, 41, 73) adapted to provide a superconducting filament in the finished superconductor, and at least one doping element (7, 43, 75) providing a doping source for doping the conductor element. The invention also relates to a method suitable for producing a superconductor.
    Type: Application
    Filed: December 22, 2009
    Publication date: February 9, 2012
    Applicant: LUVATA ESPOO OY
    Inventor: Jukka Somerkoski
  • Publication number: 20120021915
    Abstract: There is provided a superconducting joint for electrically connecting a first multifilamentary superconducting wire including a plurality of first superconducting filaments embedded in a first stabilizer matrix and a second multifilamentary superconducting wire including a plurality of second superconducting filaments embedded in a second stabilizer matrix.
    Type: Application
    Filed: July 22, 2011
    Publication date: January 26, 2012
    Inventors: Motomune KODAMA, Tsuyoshi Wakuda
  • Publication number: 20120004109
    Abstract: A magnet assembly is provided. The magnet assembly comprises a magnet configured to generate a magnetic field and an iron shield configured to shield the magnet. The magnet assembly further comprises one or more positive temperature coefficient heaters disposed on the iron shield and configured to stabilize temperature of the iron shield. An iron shield assembly and a method for temperature control of the magnet assembly are also presented.
    Type: Application
    Filed: June 21, 2011
    Publication date: January 5, 2012
    Inventors: Anbo Wu, Jun Pan, Yan Zhao, Xianrui Huang
  • Patent number: 8088714
    Abstract: A method for production of hollow bodies, in particular for radio-frequency resonators is shown and described. The object to provide a hollow bodies and a resonator, respectively, having improved electrical properties is achieved by a method comprising the following steps: Providing a substrate having a monocrystalline region, defining a cut area through the substrate, fitting markings on both sides of the cut area, producing two wafers by cutting along the cut area, wherein the wafers are completely removed from the monocrystalline region, forming the wafers into half-cells, wherein the half-cells have a joining area, joining together the half-cells to form a hollow body, wherein the joining areas bear on one another, and wherein the markings on the half-cells are oriented with respect to one another on both sides of the joining area as on both sides of the cut areas.
    Type: Grant
    Filed: November 29, 2006
    Date of Patent: January 3, 2012
    Assignee: Deutsches Elektronen-Synchrotron Desy
    Inventors: Xenia Singer, Waldemar Singer, Johannes Schwellenbach, Michael Pekeler
  • Publication number: 20110319268
    Abstract: A seed crystal for the fabrication of a superconductor is grown from a rare-earth oxide having the basic formula XwZtBaxCuyOz, X comprising at least one rare-earth element and Z being a dopant which raises the peritectic decomposition temperature (Tp) of the oxide. In a preferred embodiment, the dopant is Mg. Use to of this rare-earth oxide material for seed crystals increases the temperature at which cold-seeding can be performed and thus enables the growth of a wider range of bulk superconductor materials by this process.
    Type: Application
    Filed: June 30, 2011
    Publication date: December 29, 2011
    Applicant: Cambridge Enterprise Limited
    Inventors: David Anthony Cardwell, Nadendla Hari Babu, Yun-Hua Shi
  • Publication number: 20110294671
    Abstract: A fault current limiter, with a superconducting device (1; 21; 31; 41; 51; 61; 71; 72) comprising a sequence of superconducting elements (2a-2f), each with an electrically conducting substrate (3a-3d), a superconducting film (5a-5d), and an electrically insulating intermediate layer (4a-4c) provided between the substrate and the superconducting film, wherein the superconducting films (5a-5d) of adjacent superconducting elements (2a-2f) of the sequence are electrically connected, in particular in series, wherein the electrically conducting substrate (3a-3d) of each superconducting element (2a-2f) of the sequence is electrically insulated from each electrically conducting substrate (3a-3d) of those adjacent superconducting elements (2a-2f) within the sequence whose superconducting films (5a-5d) are electrically connected in series with the superconducting film (5a-5d) of said superconducting element (2a-2f).
    Type: Application
    Filed: August 5, 2011
    Publication date: December 1, 2011
    Inventors: Francis James Mumford, Alexander Usoskin
  • Publication number: 20110294670
    Abstract: A fault current limiter and a method for the production thereof has a superconducting device (1; 21; 31; 41; 51; 61; 71; 72) comprising a sequence of superconducting elements (2a-2f), each with an electrically conducting substrate (3a-3d), a superconducting film (5a-5d) and an electrically insulating intermediate layer (4a-4c) provided between the substrate and the superconducting film. The superconducting films (5a-5d) of adjacent superconducting elements (2a-2f) of the sequence are electrically connected, in particular in series, wherein the electrically conducting substrate (3a-3d) of each superconducting element (2a-2f) of the sequence is electrically insulated from each electrically conducting substrate (3a-3d) of those adjacent superconducting elements (2a-2f) within the sequence whose superconducting films (5a-5d) are electrically connected in series with the superconducting film (5a-5d) of said superconducting element (2a-2f).
    Type: Application
    Filed: August 5, 2011
    Publication date: December 1, 2011
    Inventors: Francis James Mumford, Alexander Usoskin
  • Publication number: 20110281735
    Abstract: A fault current limiter, with a superconducting device (1; 21; 31; 41; 51; 61; 71; 72) comprising a sequence of superconducting elements (2a-2f), each with—a substrate (3a-3d), —a superconducting film (5a-5d), and —an intermediate layer (4a-4c) provided between the substrate and the superconducting film, wherein the superconducting films (5a-5d) of adjacent superconducting elements (2a-2f) of the sequence are electrically connected, in particular in series, is characterized in that the substrates (3a-3d) of the superconducting elements (2a-2d) are electrically conducting substrates (3a-3d), wherein the electrically conducting substrate (3a-3d) of each superconducting element (2a-2f) of the sequence is electrically insulated from each electrically conducting substrate (3a-3d) of those adjacent superconducting elements (2a-2f) within the sequence whose superconducting films (5a-5d) are electrically connected in series with the superconducting film (5a-5d) of said superconducting element (2a-2f), and that the in
    Type: Application
    Filed: November 25, 2009
    Publication date: November 17, 2011
    Inventors: Francis James Mumford, Alexander Usoskin
  • Publication number: 20110251072
    Abstract: A method and system for assembling a quasicrystalline heterostructure. A plurality of particles is provided with desirable predetermined character. The particles are suspended in a medium, and holographic optical traps are used to position the particles in a way to achieve an arrangement which provides a desired property.
    Type: Application
    Filed: June 17, 2011
    Publication date: October 13, 2011
    Inventors: David G. Grier, Yael Roichman, Weining Man, Paul Michael Chaikin, Paul Joseph Steinhardt
  • Publication number: 20110212841
    Abstract: Method of making a low resistivity electrical connection between an electrical conductor and an iron pnictide superconductor involves connecting the electrical conductor and superconductor using a tin or tin-based material therebetween, such as using a tin or tin-based solder. The superconductor can be based on doped AFe2As2, where A can be Ca, Sr, Ba, Eu or combinations thereof for purposes of illustration only.
    Type: Application
    Filed: February 15, 2011
    Publication date: September 1, 2011
    Inventors: Makariy Tanatar, Ruslan Prozorov, Ni Ni, Sergey Bud'ko, Paul Canfield
  • Publication number: 20110177953
    Abstract: A superconducting fault current-limiter is provided, including a superconducting element configured to resistively or inductively limit a fault current, and one or more variable-impedance shunts electrically coupled in parallel with the superconducting element. The variable-impedance shunt(s) is configured to present a first impedance during a superconducting state of the superconducting element and a second impedance during a normal resistive state of the superconducting element. The superconducting element transitions from the superconducting state to the normal resistive state responsive to the fault current, and responsive thereto, the variable-impedance shunt(s) transitions from the first to the second impedance.
    Type: Application
    Filed: January 21, 2010
    Publication date: July 21, 2011
    Applicant: SuperPower, Inc.
    Inventors: Juan Carlos H. Llambes, Xuming Xiong
  • Patent number: 7964533
    Abstract: The invention relates to a method for producing a high temperature superconductor (HTSC) from a strip including an upper side precursor layer and which, for continuous sintering of the precursor layer within a furnace in the presence of a fed-in reaction gas, is drawn across a support. A furnace for performing the method is also described.
    Type: Grant
    Filed: February 15, 2008
    Date of Patent: June 21, 2011
    Assignee: Zenergy Power GmbH
    Inventor: Michael Baecker
  • Publication number: 20110130292
    Abstract: There is provided a room-temperature superconductor that has a very simple structure and enters a state of superconductivity at room temperature. Also, there is provided a method for making the room-temperature superconductor. Further, there is provided a protonic conductor having superconductivity at room temperature. The room-temperature superconductor comprises a substance composed of graphene and a proton donor.
    Type: Application
    Filed: June 18, 2009
    Publication date: June 2, 2011
    Inventor: Yasushi Kawashima
  • Publication number: 20110082041
    Abstract: In some implementations of the invention, existing high temperature superconducting materials (“HTS materials”) may be modified and/or new HTS materials may be created by enhancing (in the case of existing HTS materials) and/or creating (in the case of new HTS materials) an aperture within the HTS material such that the aperture is maintained at increased temperatures so as not to impede propagation of electrical charge there through. In some implementations of the invention, as long as the propagation of electrical charge through the aperture remains unimpeded, the material should remain in a superconducting state; otherwise, as the propagation of electrical charge through the aperture becomes impeded, the HTS material begins to transition into a non-superconducting state.
    Type: Application
    Filed: October 2, 2010
    Publication date: April 7, 2011
    Inventor: Douglas J. GILBERT