Superconductive Type Patents (Class 335/216)
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Publication number: 20140114175Abstract: 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.Type: ApplicationFiled: January 9, 2014Publication date: April 24, 2014Applicant: Samsung Electronics Co., Ltd.Inventor: Stephen M. HARRISON
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Publication number: 20140097920Abstract: A magnet apparatus which comprises a first vacuum chamber, a second vacuum chamber, a first magnet disposed within the first vacuum chamber such that the first magnet can be thermally isolated from the exterior of the first vacuum chamber, and a load connector extending from the first vacuum chamber into the second vacuum chamber so that a load on the first magnet can be transferred to the second vacuum chamber, wherein the load connector is in thermal contact with the first magnet and can be thermally isolated from the exterior of the first vacuum chamber and the exterior of the second vacuum chamber.Type: ApplicationFiled: October 4, 2013Publication date: April 10, 2014Applicant: Tesla Engineering LimitedInventors: Frederick Thomas David Goldie, Patrick Brian Clayton
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Publication number: 20140094371Abstract: An example particle accelerator includes a coil to provide a magnetic field to a cavity; a cryostat comprising a chamber for holding the coil, where the coil is arranged in the chamber to define an interior region of the coil and an exterior region of the coil; magnetic structures adjacent to the cryostat, where the magnetic structures have one or more slots at least part-way therethrough; and one or more magnetic shims in one or more corresponding slots. The one or more magnetic shims are movable to adjust a position of the coil by changing a magnetic field produced by the magnetic structures.Type: ApplicationFiled: September 27, 2013Publication date: April 3, 2014Applicant: Mevion Medical Systems, Inc.Inventors: Gerrit Townsend Zwart, Jan Van der Laan, Kenneth P. Gall, Stanislaw P. Sobczynski
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Publication number: 20140085021Abstract: In a method and apparatus for maintaining operation of ancillary equipment associated with a superconducting magnet carrying a DC current, the DC current is directed through a DC-to-AC converter, and the magnitude of the current flowing through the superconducting magnet is ramped down at a controlled rate, thereby generating a controlled voltage across a controlled impedance, and powering the ancillary equipment by the controlled voltage and an associated current, and the ramping rate is controlled in order to maintain a required controlled voltage.Type: ApplicationFiled: March 16, 2012Publication date: March 27, 2014Inventors: Hugh Alexander Blakes, Adam Paul Johnstone
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Publication number: 20140066313Abstract: The present invention provides a MgB2 multi-core wire including a plurality of MgB2 single-core wires having a MgB2 superconducting core part and a metal sheath part the metal sheath part is provided on the outer surface of the MgB2 superconducting core part, wherein a plurality of the MgB2 single-core wires is bound with each other, and a gap is provided between a plurality of the MgB2 single-core wires, and a refrigerant for flowing in the gap in a direction of a longitudinal axis of the MgB2 single-core wires.Type: ApplicationFiled: February 4, 2013Publication date: March 6, 2014Applicant: HITACHI, LTD.Inventor: HITACHI, LTD.
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Patent number: 8650888Abstract: The present invention relates to a cryostat having a service neck for access to a superconducting magnet. In many cryogenic applications components, e.g. superconducting coils for magnetic resonance imaging (MRI), superconducting transformers, generators, electronics, are cooled by keeping them in contact with a volume of liquefied, the whole cryogenic assembly being known as a cryostat. In order to operate a superconducting magnet, it must be kept at a temperature below its superconducting transition temperature. A cryostat must provide access to the vessel containing the liquefied helium for the initial cooling of the magnet to its low operating temperature, for periodic refilling of systems where there is a loss of helium, and provide sufficient access whereby to enable operation and maintenance of the magnet.Type: GrantFiled: November 20, 2002Date of Patent: February 18, 2014Assignee: Siemens PlcInventors: Florian Steinmeyer, Keith White
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Patent number: 8653920Abstract: A superconducting magnet is described and includes at least one superconducting coil, at least one support member coupled to the superconducting coil and at least one compliant interface between the superconducting coil and the support member. The superconducting coil defines a radial direction. The superconducting coil supports the superconducting coil along an axial direction that is substantially perpendicular to the radial direction. The compliant interface is configured to move along the radial direction when the superconducting magnet is energized.Type: GrantFiled: February 9, 2011Date of Patent: February 18, 2014Assignee: General Electric CompanyInventors: Xianrui Huang, Yan Zhao, Pan Jun, Paul St. Mark Shadforth Thompson, Evangelos Trifon Laskaris
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Patent number: 8648678Abstract: Disclosed is a compact superconducting magnet device for generating an intense and homogeneous magnetic field component Bz along an axis Oz in a zone of interest ZI successively includes, starting from the axis Oz, at least three coaxial superconducting helical coils formed around circular cylinder sections of axis Oz delimited by end circles. The lateral ends of the helical coils are arranged, to within the thickness of the coils, in the vicinity of one same sphere of radius c whose centre O is placed on the axis Oz at the centre of the zone of interest ZI and which encompasses the magnetic device assembly. The azimuthal current densities j1, j2, j3 of the helical coils are alternately of opposite sign. The lengths of the helical coils are of decreasing length.Type: GrantFiled: July 8, 2011Date of Patent: February 11, 2014Assignee: Commissariat a l'Energie Atomique et aux Energies AlternativesInventor: Guy Aubert
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Publication number: 20140028316Abstract: A current lead assembly for minimizing heat load to a conduction cooled superconducting magnet during a ramp operation is provided. The current lead assembly includes a vacuum chamber having a through hole to enable a retractable current lead having a retractable contact to penetrate within the vacuum chamber. A superconducting magnet is arranged inside of the vacuum chamber and includes a magnet lead. A current contact is arranged inside of the vacuum chamber beneath the through-hole and is coupled to the magnet lead via a thermal connector. The current contact is supported by a thermal isolation support structure coupled to an inside wall of the vacuum chamber. An actuator assembly is provided to contact the retractable contact with the current contact, where connection occurs at ambient temperature inside of the thermal isolation support structure.Type: ApplicationFiled: July 27, 2012Publication date: January 30, 2014Applicant: GENERAL ELECTRIC COMPANYInventors: Susumu Mine, Evangelos Trifon Laskaris, Paul St. Mark Shadforth Thompson
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Publication number: 20140031235Abstract: An inner circumferential portion is formed by winding one of first and second superconducting wires each having a band shape. An outer circumferential portion is formed by winding the other of the first and second superconducting wires around the inner circumferential portion. A welding portion joins the first and second superconducting wires to each other by welding between the inner circumferential portion and the outer circumferential portion. The first superconducting wire is higher in strength than the second superconducting wire. The second superconducting wire is smaller in thickness than the first superconducting wire.Type: ApplicationFiled: April 24, 2012Publication date: January 30, 2014Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventors: Eisaku Ueno, Takeshi Kato
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Publication number: 20140022730Abstract: An improved field emission system and method is provided that involves field emission structures having irregular polarity patterns defined in accordance with one-dimensional codes, where an irregular polarity pattern is at least one of an asymmetrical polarity pattern or an uneven polarity pattern. Such one-dimensional codes define at least one peak force and a plurality of off peak spatial forces corresponding to a plurality of alignments of said first and second field emission structures per code modulo, where a peak force is a spatial force produced when all aligned field emission sources produce an attractive force or all aligned field emission sources produce a repellant force and an off peak spatial force is a spatial force resulting from cancellation of at least one attractive force by at least one repellant force.Type: ApplicationFiled: September 24, 2013Publication date: January 23, 2014Applicant: Correlated Magnetics Research LLC.Inventors: Larry W. Fullerton, Mark D. Roberts, James L. Richards
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Patent number: 8614612Abstract: A superconducting coil includes (a) a plurality of windings of a coil comprising high-temperature superconductors and (b) an electrically conductive channel in which the high-temperature superconductors are mounted. The high-temperature superconductors can comprise at least one of the following: Ba2Sr2Ca1Cu2O8 (2212), Ba2Sr2Ca2Cu3O10 (2223), and YBa2Cu3O7-x (123) superconductor.Type: GrantFiled: January 17, 2012Date of Patent: December 24, 2013Assignee: Massachusetts Institute of TechnologyInventors: Timothy A. Antaya, Joel Henry Schultz
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Publication number: 20130321109Abstract: A supported pot magnet has a magnet coil and a coil former, with the coil former being made of a non-metallic material having a thermal contraction coefficient the same as that of the magnet coil. The supported pot magnet also has a cooling circulator composed of two identical separate components with a semi-cylindrical shape, each having multiple cooling tubes, a refrigerant inlet tube, a refrigerant outlet tube, and multiple clamps. The cooling tubes have a semicircular shape and mate with the slots, and are provided thereon with heat conducting members that are vertically disposed at an inner side of the cooling tubes. The refrigerant inlet tube and outlet tube are vertically mounted at two ends of the cooling tubes, in communication with the cooling tubes. The clamps are disposed on the refrigerant inlet tube and outlet tube.Type: ApplicationFiled: May 30, 2013Publication date: December 5, 2013Inventors: Lei Yang, Bu Qing Zhang
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Patent number: 8581681Abstract: 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: GrantFiled: June 21, 2011Date of Patent: November 12, 2013Assignee: General Electric CompanyInventors: Anbo Wu, Jun Pan, Yan Zhao, Xianrui Huang
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Patent number: 8583200Abstract: 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.Type: GrantFiled: July 11, 2012Date of Patent: November 12, 2013Assignee: Samsung Electronics Co., Ltd.Inventor: Stephen M Harrison
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Patent number: 8570127Abstract: A high magnetic field superconducting magnet system with large crossing warm bore is disclosed, a superconducting coil thereof includes a low temperature superconducting coil and a high temperature superconducting coil. The superconducting coils are connected to a thermal shield and a flange of a low temperature container by a supporting drawbar, thus the superconducting coils as a whole are supported inside the low temperature container. A thermal switch is connected to a primary cold head and a secondary cold head of the cryocooler. The secondary cold head of the cryocooler is connected to a magnet-reinforced supporting flange at the two ends of the low temperature superconducting coil and the high temperature superconducting coil by a cold conduction strip. The superconducting magnet system has a room temperature bore in horizontal direction and a room temperature bore in vertical direction.Type: GrantFiled: July 1, 2010Date of Patent: October 29, 2013Assignee: Institute of Electrical Engineering, Chinese Academy of SciencesInventors: Qiuliang Wang, Xinning Hu, Yinming Dai, Baozhi Zhao, Luguang Yan, Shousen Song, Housheng Wang, Yuanzhong Lei, Hui Wang
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Patent number: 8565845Abstract: The invention offers a superconducting coil that has the shape of a pancake formed by winding a superconducting conductor. The superconducting conductor is composed of a tape-shaped (Bi, Pb)2223-based superconducting wire and a tape-shaped thin-film RE123-based superconducting wire that are electrically connected in parallel with each other. The coil generates only a low voltage in the steady-operation state, limits the generated voltage to a low level even in a state where an external disturbance enters for some reason, and is therefore less susceptible to quenching. Consequently, the coil can be operated stably in both states. The invention also offers a superconducting conductor to be used to form the coil.Type: GrantFiled: February 6, 2008Date of Patent: October 22, 2013Assignee: Sumitomo Electric Industries, Ltd.Inventors: Shinichi Kobayashi, Tetsuyuki Kaneko
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Publication number: 20130265124Abstract: Disclosed is a compact superconducting magnet device for generating an intense and homogeneous magnetic field component Bz along an axis Oz in a zone of interest ZI successively includes, starting from the axis Oz, at least three coaxial superconducting helical coils formed around circular cylinder sections of axis Oz delimited by end circles. The lateral ends of the helical coils are arranged, to within the thickness of the coils, in the vicinity of one same sphere of radius c whose centre O is placed on the axis Oz at the centre of the zone of interest ZI and which encompasses the magnetic device assembly. The azimuthal current densities j1, j2, j3 of the helical coils are alternately of opposite sign. The lengths of the helical coils are of decreasing length.Type: ApplicationFiled: July 8, 2011Publication date: October 10, 2013Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVESInventor: Guy Aubert
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Publication number: 20130234815Abstract: A persistent switch control system, a superconducting magnet apparatus employing the persistent switch control system, and a method of controlling a persistent switch. The persistent switch control system includes: a persistent switch for switching between an open state and a closed state of a superconducting coil; and a persistent switch controller for controlling the persistent switch, wherein, during a charging mode, a resistance state of the persistent switch is maintained by a ramp heat load that is generated by a ramp voltage applied to the persistent switch.Type: ApplicationFiled: November 29, 2012Publication date: September 12, 2013Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventor: Stephen R. MILWARD
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Publication number: 20130237425Abstract: A multi-orientation cryostat 5 for a superconducting magnet 4 for use in a plurality of orientations. The cryostat 5 comprises a vessel 6 for holding cryogenic liquid and, leading away from the vessel, a quench duct 7 for allowing escape from the vessel of gas generated by boiling of the cryogenic liquid due to quenching of the magnet. The quench duct 7 is sinuous so as to provide at least to differently orientated anti-convection portions 71, each portion for functioning as an anti-convection portion with the cryostat in a respective corresponding orientation.Type: ApplicationFiled: March 23, 2012Publication date: September 12, 2013Applicant: Tesla Engineering LimitedInventors: Benjamin David Leigh, Masayuki Nakatsu
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Publication number: 20130237426Abstract: A superconducting magnet includes a superconducting coil, a heat shield surrounding the superconducting coil, a vacuum chamber accommodating the heat shield, a magnetic shield covering at least a part of the vacuum chamber, and a refrigerating machine fixed to the vacuum chamber to cool the superconducting coil through a heat conducting body. The magnetic shield abuts against said vacuum chamber with an elastic body therebetween to support the vacuum chamber.Type: ApplicationFiled: March 22, 2011Publication date: September 12, 2013Applicant: Mitsubishi Electric CorporationInventor: Hajime Tamura
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Publication number: 20130231248Abstract: 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.Type: ApplicationFiled: October 11, 2012Publication date: September 5, 2013Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventor: Stephen M. HARRISON
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Patent number: 8525447Abstract: A compact, cold, weak-focusing superconducting cyclotron can include at least two superconducting coils on opposite sides of a median acceleration plane. A magnetic yoke surrounds the coils and contains an acceleration chamber. The magnetic yoke is in thermal contact with the superconducting coils, and the median acceleration plane extends through the acceleration chamber. A cryogenic refrigerator is thermally coupled both with the superconducting coils and with the magnetic yoke.Type: GrantFiled: November 22, 2010Date of Patent: September 3, 2013Assignee: Massachusetts Institute of TechnologyInventor: Timothy A. Antaya
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Publication number: 20130203603Abstract: 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.Type: ApplicationFiled: January 28, 2013Publication date: August 8, 2013Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventor: SAMSUNG ELECTRONICS CO., LTD.
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Publication number: 20130190186Abstract: A superconducting magnet device and a magnetic resonance imaging system not only avoid the need for costly aluminum alloy formers but also lower quench pressure effectively, have a baffle covering the former and the coil, with a gap between the baffle and the coil.Type: ApplicationFiled: July 3, 2012Publication date: July 25, 2013Inventors: Xian Xi Chen, An Feng Li, Xing En Yu
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Publication number: 20130190185Abstract: A superconducting magnetic shielding system includes first and second planar superconducting shields respectively positioned above and below an environment to be shielded. The shields are each thermally coupled to a cold source at a respective thermalizing point. When the shields are cooled into the superconducting regime, they passively block magnetic fields via the Meissner Effect. Each shield may also be shaped to produce a smooth temperature gradient extending away from its thermalizing point; thus, as the shields are cooled, magnetic fields may be expelled away from the thermalizing point and, consequently, away from the environment to be shielded. A heater may also be provided opposite the thermalizing points to improve control of the temperature gradient.Type: ApplicationFiled: September 13, 2012Publication date: July 25, 2013Applicant: D-WAVE SYSTEMS INC.Inventor: Patrick Pablo Chavez
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Patent number: 8487730Abstract: A magnetic field generating device includes a housing and a cryogenically coolable superconducting magnetic coil that is accommodated in the housing. The housing includes a deep-drilled hole, through which coolant flows.Type: GrantFiled: May 14, 2010Date of Patent: July 16, 2013Assignee: Siemens AktiengesellschaftInventors: Robert Hahn, Andreas Ziegler
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Patent number: 8487727Abstract: A superconducting magnet assembly is provided. The superconducting magnet assembly includes a superconducting magnet configured to generate a static magnetic field, an iron shield configured to shield the superconducting magnet, and a magnetic gradient coil assembly configured to generate a gradient magnetic field. The superconducting magnet assembly further includes one or more magnetic lamination elements disposed on the iron shield to reduce eddy current induced by the gradient magnetic field in the iron shield. A method is also presented.Type: GrantFiled: August 26, 2011Date of Patent: July 16, 2013Assignee: General Electric CompanyInventors: Anbo Wu, Yan Zhao, Chao Yang, Evangelos Trifon Laskaris, Xianrui Huang
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Patent number: 8482369Abstract: A superconducting magnet assembly is provided that includes a magnet protection system electrically coupled to a plurality of magnet coils to form a closed loop circuit. The magnet protection system includes a single superconducting switch to selectively connect a power supply to the plurality of magnet coils and also includes a plurality of dump resistors arranged to form a resistor ladder circuit, with each of the plurality of dump resistors being connected between magnet coils forming a respective symmetric coil pair. The magnet protection system also includes a heater network connected between ends of the closed loop circuit and to the plurality of magnet coils, with the heater network configured to perform a quench-back operation to protect the plurality of magnet coils during quench and being driven by a partial-magnet coil voltage generated in a magnet coil upon initiation of a quench condition in the magnet coil.Type: GrantFiled: October 31, 2011Date of Patent: July 9, 2013Assignee: General Electric CompanyInventors: Jian-She Wang, Andrei G. Baikalov, Timothy John Bergfeld
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Patent number: 8471660Abstract: A superconducting magnetizer assembly includes a coil pack including an inner coil configured to generate a first magnetic field in response to an electric current supplied to the inner coil, an outer coil being disposed about the inner coil and configured to generate a second magnetic field in response to an electric current supplied to the outer coil, a non-conductive end spacer disposed between an end winding of the inner coil and an end winding of the outer coil, and a container to house the inner and outer coils; and a yoke disposed proximate the coil pack being configured to constrain the first and second magnetic fields to reduce the strength of the first field at the end winding of the inner coil, wherein the yoke comprises an annular ring configured to at least partially envelop the coil pack.Type: GrantFiled: December 5, 2012Date of Patent: June 25, 2013Assignee: General Electric CompanyInventors: James Humphrie Rochford, Kiruba Sivasubramaniam Haran, Ernst Wolfgang Stautner
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Patent number: 8467841Abstract: A superconducting high-field magnet coil system comprising several radially nested main coil sections (1, 2, 3, 4, 5) which are connected to each other in series in such a fashion that currents of the same direction flow through them during operation, wherein a first main coil section (EHS) is disposed radially further inward than a second main coil section (ZHS) and at least one intermediate main coil section (ZW) is disposed radially between the first and the second main coil section (EHS, ZHS), and with a superconducting switch (11) via which all main coil sections (1, 2, 3, 4, 5) can be superconductingly short-circuited in series, is characterized in that the first main coil section (EHS) and the second main coil section (ZHS) are directly successively series-connected and the first main coil section (EHS) and the second main coil section (ZHS) are bridged by a common quench protection element, which does not bridge the at least one intermediate main coil section (ZW).Type: GrantFiled: September 1, 2010Date of Patent: June 18, 2013Assignee: Bruker BioSpin GmbHInventors: Wolfgang Frantz, Gerald Neuberth, Gerhard Roth
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Publication number: 20130147582Abstract: A means for the creation of propulsive force and an apparatus for implementing the means comprising a solenoid, such as a superconductive electromagnet, located at the narrow end of a tapered tube whose solid parts are made of a superconductor with high magnetic field trapping ability, such as the type II superconductor Y—Ba—Cu—O, and within which a propulsive force is developed. The magnetic field generated by the solenoid repulsively interacts with pinned magnetic fields established within the superconducting tapered tube to create a pressure on the tapered tube which produces a propulsive force directed toward the tapered tube's converging end.Type: ApplicationFiled: February 6, 2013Publication date: June 13, 2013Inventor: Nassikas A. Athanassios
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Patent number: 8456269Abstract: Disclosed herein is a coil bobbin for a superconducting magnetic energy storage. The coil bobbin includes coil bobbin frames, superconducting coils, first support plates, second support plates and a center frame. The coil bobbin frames are provided in such a way as to face each other. The superconducting coils are wound around the respective coil bobbin frames. The first support plates are provided on surfaces of the respective coil bobbin frames that are on faces that are opposite to the surfaces between the coil bobbin frames that face each other. The second support plates are provided on the respective facing surfaces of the coil bobbin frames. The center frame is disposed between the second support plates and has an annular plate shape having a thickness that is gradually reduced towards a center of the toroidal arrangement.Type: GrantFiled: October 21, 2011Date of Patent: June 4, 2013Assignee: Korea Electrotechnology Research InstituteInventors: Myunghwan Sohn, Joonhan Bae, Kichul Seong, Kideok Sim, Haejong Kim, Homin Kim
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Publication number: 20130130914Abstract: The invention relates to a high-temperature superconductor (HTS) magnet system, preferably for an insertion device for generation of high-intensity synchrotron radiation, consisting of the coil body (6), on the mantle surface of which poles with windings that lie between them are disposed, wherein at least one high-temperature superconductor strip (23) is wound onto the coil body (6) in one direction, and adjacent winding packages or sections are electrically connected with one another in such a manner that the current flow runs in opposite directions, in each instance. The solution according to the invention has the advantage of a simplified winding process, whereby individual coil pairs can be replaced, if necessary, by means of the modular arrangement. The scheme can be applied to every possible configuration of an insertion device, and is therefore also suitable for use in so-called free electron lasers and other light sources based on particle accelerators.Type: ApplicationFiled: July 30, 2010Publication date: May 23, 2013Applicant: BABCOCK NOELL GMBHInventors: Cristian Boffo, Thomas Gerhard
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Publication number: 20130106545Abstract: A superconducting magnet assembly is provided that includes a magnet protection system electrically coupled to a plurality of magnet coils to form a closed loop circuit. The magnet protection system includes a single superconducting switch to selectively connect a power supply to the plurality of magnet coils and also includes a plurality of dump resistors arranged to form a resistor ladder circuit, with each of the plurality of dump resistors being connected between magnet coils forming a respective symmetric coil pair. The magnet protection system also includes a heater network connected between ends of the closed loop circuit and to the plurality of magnet coils, with the heater network configured to perform a quench-back operation to protect the plurality of magnet coils during quench and being driven by a partial-magnet coil voltage generated in a magnet coil upon initiation of a quench condition in the magnet coil.Type: ApplicationFiled: October 31, 2011Publication date: May 2, 2013Inventors: Jian-She Wang, Andrei G. Baikalov, Timothy John Bergfeld
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Publication number: 20130099881Abstract: A small superconducting undulator with a period less than 1 cm, referred to here as a “super-mini” undulator. The embodiment of the super-mini encompasses of two coils wound bifilarly around a pair of bobbins in a racetrack configuration, such that the currents in adjacent coil segments run antiparallel to each other. If such coils are arranged alongside each other, separated only by a small gap on the order of a couple of millimeters, a spatially alternating magnetic field is produced that makes a passing electron beam undulate and emit undulator radiation. The wound bobbins are mounted within a frame and combined with upper and lower pole pieces to close gap between the wire coils.Type: ApplicationFiled: October 25, 2011Publication date: April 25, 2013Inventors: Alex K. Deyhim, Joseph D. Kulesza
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Publication number: 20130096007Abstract: 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.Type: ApplicationFiled: October 11, 2012Publication date: April 18, 2013Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventor: Samsung Electronics Co., Ltd.
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Publication number: 20130093546Abstract: A superconducting magnetizer assembly includes a coil pack including an inner coil configured to generate a first magnetic field in response to an electric current supplied to the inner coil, an outer coil being disposed about the inner coil and configured to generate a second magnetic field in response to an electric current supplied to the outer coil, a non-conductive end spacer disposed between an end winding of the inner coil and an end winding of the outer coil, and a container to house the inner and outer coils; and a yoke disposed proximate the coil pack being configured to constrain the first and second magnetic fields to reduce the strength of the first field at the end winding of the inner coil, wherein the yoke comprises an annular ring configured to at least partially envelop the coil pack.Type: ApplicationFiled: December 5, 2012Publication date: April 18, 2013Applicant: GENERAL ELECTRIC COMPANYInventor: General Electric Company
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Publication number: 20130090242Abstract: Techniques for sub-cooling in a superconducting (SC) system is disclosed. The techniques may be realized as a method and superconducting (SC) system comprising at least one insulated enclosure configured to enclose at least a first fluid or gas and a second fluid or gas, and at least one superconducting circuit within the at least one insulated enclosure. The superconducting (SC) system may be sub-cooled using at least the first fluid or gas.Type: ApplicationFiled: October 5, 2011Publication date: April 11, 2013Applicant: Varian Semiconductor Equipment Associates, Inc.Inventors: James D. Strassner, Gregory Citver, Frank Sinclair
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Publication number: 20130090241Abstract: 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.Type: ApplicationFiled: October 11, 2012Publication date: April 11, 2013Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventor: SAMSUNG ELECTRONICS CO., LTD.
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Publication number: 20130088313Abstract: 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.Type: ApplicationFiled: October 11, 2012Publication date: April 11, 2013Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventor: SAMSUNG ELECTRONICS CO., LTD.
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Patent number: 8411401Abstract: A method for current conditioning, comprising transporting a primary current (1) through a primary coil (2), coupling a secondary coil (3) to the primary coil (2) via a common magnetic flux, wherein the secondary coil (3) comprises a superconductor capable of quenching, with the quenching causing a transition of the superconductor from a low resistance superconducting state to a high resistance quenched state, and in the low resistance superconducting state of the secondary coil (3), guiding a major fraction (8) of the common magnetic flux of the primary coil (2) and the secondary coil (3) within a ferromagnetic medium (5a), is characterized by upon quenching, switching the common magnetic flux such that a major fraction (17) of the common magnetic flux is guided outside the ferromagnetic medium (5a) in the high resistance quenched state of the superconductor. An economic and efficient method for current conditioning is thereby provided which reduces harmonic distortions.Type: GrantFiled: September 15, 2010Date of Patent: April 2, 2013Assignee: Bruker HTS GmbHInventors: Alexander Usoskin, Hans-Udo Klein
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Patent number: 8406833Abstract: A cryostat (1) with a magnet coil system including superconductors for the production of a magnet field B0 in a measuring volume (3) has a plurality of radically nested solenoid-shaped coil sections (4, 5, 6) and which are electrically connected in series, at least one of which being an LTS section (5, 6) with a conventional low temperature superconductor (LTS) and at least one of which being an HTS section (4) including a high temperature superconductor (HTS), wherein the magnet coil system is located in a helium tank (9) of the cryostat (1) along with liquid helium at a helium temperature TL<4 K. The apparatus is characterized in that heating means are provided which always keep the HTS at an increased temperature TH>TL and TH>2.2 K. The cryostat in accordance with the invention can maintain the HTS section over a long period of time in a reliable manner.Type: GrantFiled: March 7, 2007Date of Patent: March 26, 2013Assignee: Bruker Biospin GmbHInventors: Gerhard Roth, Axel Lausch
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Publication number: 20130065767Abstract: A magnet coil configuration (20-24) is manufactured from a band-shaped conductor (1), which is slit in the longitudinal direction except for its two end areas (2, 3) such that the band-shaped conductor (1) has a first and a second half band (4, 5) and two end areas (2, 3) which connect these two half bands (4, 5) to form a closed loop. The two half-bands (4,5) of the slit band-shaped conductor (1) are initially wound onto two separate intermediate coils (14,15) and the final coil structure is subsequently wound by alternate extraction of the two half-bands (4,5) from the intermediate coils (14,15). A simple method is thereby proposed for winding a slit band-shaped conductor to form a magnet coil configuration which also generates strong magnetic fields.Type: ApplicationFiled: September 3, 2012Publication date: March 14, 2013Inventors: Robert Schauwecker, Robert Herzog, Riccardo Tediosi, Matteo Alessandrini
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Patent number: 8395468Abstract: A magnetic field generation system includes first (28a) and second (28b) magnetic flux concentrators spaced apart to form a sample volume (30). A first set of auxiliary permanent magnets (10a, 10b) can be symmetrically oriented about and in contact with a portion of the first magnetic flux concentrator (28a). Similarly, a second set of auxiliary permanent magnets (10c, 10d) can be symmetrically oriented about and in contact with a portion of the second magnetic flux concentrator (28b). The first(10a, 10b) and second (10c, 10d) sets of auxiliary magnets can be magnetically associated via the first (28a) and second (28b) magnetic flux concentrators. Magnetically soft shunts (38) can be movably oriented to allow variation of the magnetic field strength across the sample volume by disrupting the field flux across the magnetic flux concentrators.Type: GrantFiled: January 4, 2007Date of Patent: March 12, 2013Assignee: University of Utah Research FoundationInventors: James C. Stephenson, Bruce K. Gale, Cynthia Furse
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Patent number: 8391936Abstract: A magnetic levitation device includes at least two superconductor molded bodies with stored magnetic field configurations above a magnetic guide track. The at least two superconductor molded bodies have at least one of a stored magnetic field configuration with different vertical spacing from the guide track and a stored magnetic field configuration with different horizontal position with respect to the guide track. The at least two superconductor molded bodies are mechanically held in a position deviating from their stored position above the guide track and connected to one another. This abstract is not intended to define the invention disclosed in the specification, nor intended to limit the scope of the invention in any way.Type: GrantFiled: January 29, 2006Date of Patent: March 5, 2013Assignee: Leibniz-Institut Fuer Festkoerper-und Werkstoffforschung Dresden E.V.Inventors: Christoph Beyer, Oliver De Haas, Torsten Riederich, Ludwig Schultz
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Patent number: 8384387Abstract: A magnetic resonance imaging configuration to straighten and otherwise homogenize the field lines in the imaging portion, creating improved image quality. Through use of calibrated corrective coils, magnetic field lines can be manipulated to improve uniformity and image quality. Additionally, when the apparatus is composed of non-ferromagnetic materials, field strengths can be increased to overcome limitations of Iron-based systems such as by use of superconductivity. A patient positioning apparatus allowing multi-positioning is also disclosed.Type: GrantFiled: February 17, 2009Date of Patent: February 26, 2013Assignee: Fonar CorporationInventors: Raymond V. Damadian, Gordon T. Danby, Hank Hsieh, John W. Jackson, Mark Gelbien, William H. Wahl, Charles A. Green
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Patent number: 8384504Abstract: A magnet system for generating a magnetic field may include a superconducting magnet, a switch, and a heater element thermally coupled to the switch. The superconducting magnet is structured to generate magnetic fields, and the switch includes a non-inductive superconducting current carrying path connected in parallel to the superconducting magnet. In general, the switch is structured to only carry a level of current that is a portion of the current required to obtain a full field by the superconducting magnet.Type: GrantFiled: January 6, 2006Date of Patent: February 26, 2013Assignee: Quantum Design International, Inc.Inventors: Jost Diederichs, Andreas Amann, Michael B. Simmonds
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Publication number: 20130045870Abstract: 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: ApplicationFiled: April 28, 2011Publication date: February 21, 2013Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.Inventors: John R. Rogers, Edwardus Maria Bek
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Publication number: 20130040819Abstract: An electrode unit joining structure for a superconducting wire includes: a superconducting wire comprising a first base member, a first superconducting layer provided on the first base member, and a first electroconductive layer provided on the first superconducting layer; an electrode provided on the first electroconductive layer at an end portion of the superconducting wire; and a superconducting cover tape comprising a second base member, a second superconducting layer provided on the second base member, and a second electroconductive layer provided on the second superconducting layer, the superconducting cover tape being provided so as to cover at least part of the electrode, wherein the second electroconductive layer of the superconducting cover tape is disposed on the electrode side, and the electrode, the superconducting wire, and the superconducting cover tape are electrically connected to each other.Type: ApplicationFiled: October 12, 2012Publication date: February 14, 2013Applicant: FUJIKURA LTD.Inventor: FUJIKURA LTD.