EP1381059A1 - Aimant supraconducteur, enroulement supraconducteur et spectromètre supraconducteur - Google Patents

Aimant supraconducteur, enroulement supraconducteur et spectromètre supraconducteur Download PDF

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Publication number
EP1381059A1
EP1381059A1 EP03254403A EP03254403A EP1381059A1 EP 1381059 A1 EP1381059 A1 EP 1381059A1 EP 03254403 A EP03254403 A EP 03254403A EP 03254403 A EP03254403 A EP 03254403A EP 1381059 A1 EP1381059 A1 EP 1381059A1
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EP
European Patent Office
Prior art keywords
superconducting
superconducting coil
coil
wire
superconducting wire
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP03254403A
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German (de)
English (en)
Inventor
Akira Yamamoto
Yasuhiro Makida
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
High Energy Accelerator Research Organization
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High Energy Accelerator Research Organization
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by High Energy Accelerator Research Organization filed Critical High Energy Accelerator Research Organization
Publication of EP1381059A1 publication Critical patent/EP1381059A1/fr
Withdrawn legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F6/00—Superconducting magnets; Superconducting coils
    • H01F6/06—Coils, e.g. winding, insulating, terminating or casing arrangements therefor

Definitions

  • This invention relates to a superconducting magnet, and a superconducting coil structure and a superconducting spectrometer which utilize the superconducting magnet.
  • Fig. 1 is a perspective view schematically and entirely showing a conventional superconducting magnet
  • Fig. 2 is an enlarged cross sectional view showing a portion of the superconducting magnet enclosed by the dot-dashed curve.
  • the superconducting coil 10 is supported by the support cylinder 20 at the periphery thereof.
  • the superconducting coil 10 is composed of four layer winding of the coil member 11 in the radial direction.
  • the coil members 11 are electrically insulated from one another by tape-shaped insulating members 13.
  • the superconducting coil 10 is covered entirely with epoxy resin (not shown), and by curing the epoxy resin, the coil members 11 are fixed and integrated.
  • the mechanical strength of the superconducting coil 10 is not sufficient, so that the configuration of the superconducting coil 10 can not be maintained as it is, due to a large electromagnetic force therefrom. Therefore, as mentioned above, the superconducting coil 10 is required to be supported by the support cylinder 20. As a result, the superconducting magnet can not be lightened in weight and thinned, and as of now, can not be employed in order to generate a large scaled magnetic field of high strength in cosmic space.
  • this invention relates to a superconducting coil comprising a coil member composed of:
  • the superconducting wire may be made of NbTi/Cu superconducting wire, MgB 2 superconducting wire or bismuth-based high temperature superconducting wire.
  • the NbTi/Cu superconducting wire is composed of cupper matrix and NbTi filament embedded in the cupper matrix.
  • As the bismuth-based high temperature superconducting wire is exemplified BiSrCaCuO superconducting wire.
  • the superconducting coil made from the NbTi/Cu superconducting wire or the like is covered with an aluminum alloy-stabilizing member.
  • the superconducting coil of the present invention is constructed of a complex type superconducting member of the superconducting coil and the aluminum alloy-stabilizing member.
  • a magnetic field of high strength is generated by flowing current in the superconducting wire, and then, an electromagnetic force originated from the magnetic field is exerted on the superconducting wire. Since the superconducting wire is covered with the aluminum alloy-stabilized member, however, it can not be deformed beyond the elastic limit. Therefore, the superconducting coil can be maintained as it is without the deformation due to the electromagnetic force.
  • the superconducting coil can be directly employed as a superconducting magnet. Accordingly, the intended superconducting magnet can be lightened in weight and thinned, and thus, can be utilized in order to generate a large scaled magnetic field of high strength in cosmic space.
  • a superconducting coil structure With a superconducting coil structure according to the present invention, plural superconducting coils are provided.
  • the superconducting member made of the superconducting wire and the aluminum alloy-stabilizing member is wound in solenoid.
  • the polarities of the superconducting coils are opposite to each other, and the magnetic flux from the superconducting coils are passed therethrough to form a magnetic closed loop.
  • the superconducting coil structure of the present invention since the magnetic flux from the superconducting coils forms the magnetic closed loop, magnetic dipole moment is not generated in the superconducting coil structure. Therefore, if the superconducting coil structure is disposed in cosmic space to generate a magnetic field of high strength, no interaction with earth magnetism of the superconducting coil structure is generated, and thus, no torque is exerted on the superconducting coil structure. As a result, the superconducting coil structure can be disposed so as to generate a high strength magnetic field in cosmic space without any additional support structure.
  • a superconducting spectrometer is characterized in that a particle detector is installed in at least one of the superconducting coils of the superconducting coil structure.
  • a particle detector is installed in at least one of the superconducting coils of the superconducting coil structure.
  • a high strength magnetic field can be generated without any torque due to the interaction with the earth magnetism. Therefore, charged particles can be deflected by the magnetic field and then, the kinetic momentums of the charged particles can be measured by the detector.
  • Fig. 3 is a perspective view schematically and entirely showing a superconducting coil according to the present invention
  • Fig. 4 is an enlarged cross sectional view showing a portion of the superconducting coil enclosed by the dot-dashed line.
  • two superconducting members 31 are provided and wound in two-layered structure to form a solenoid type superconducting coil.
  • a plate-like shell 32 is inserted between the superconducting coil members 31. With the shell 32, the superconducting coil members 31 can be aligned precisely, and thus, the mechanical stability of the superconducting coil can be enhanced. Also, the thermal conduction can be easily promoted and thus, the superconducting coil can be entirely cooled with a cooling system (not shown), utilizing the large thermal conduction.
  • the shell 32 may be made from aluminum, aluminum alloy, plastic composite or electric insulating film.
  • Tape-shaped electric insulating members 33 are provided between the superconducting coil members 31 and the shell 32, respectively so that the superconducting coil members 31 can be electrically insulated from each other and the shell 32.
  • the coil member 31 is composed of a superconducting wire 310 and an aluminum alloy -stabilizing member 311 enclosing the wire 310.
  • the superconducting wire 310 exhibits superconduction, and thus, can generate a magnetic field of high strength by flowing current therein.
  • the superconducting wire 310 is covered with the aluminum alloy-stabilizing member 311. Therefore, even though an electromagnetic force, originated from the magnetic field, is exerted on the superconducting wire 310 posteriori, the superconducting wire 310 can not be deformed and can be maintained as it is by means of the aluminum alloy-stabilizing member 311.
  • the configuration of the superconducting coil can be maintained without supporting cylinder or the like, different from the conventional one.
  • the superconducting coil can function as a superconducting magnet as being able to generate a magnetic field of high strength in cosmic space.
  • the superconducting wire 310 may be made of NbTi/Cu superconducting wire of cupper matrix and NbTi filament embedded in the cupper matrix, Mg 2 B superconducting wire or bismuth-based high temperature superconducting wire such as BiSrCaCuO superconducting wire.
  • NbTi/Cu superconducting wire it is desired that several thousands of NbTi filaments are embedded in the cupper matrix.
  • the aluminum alloy-stabilizing member 311 include Al of 95 atomic % or over, particularly 99 atomic % or over, and in addition, includes at least one selected from the group consisting of Ni, Zn, Si, Cu and Mg.
  • the mechanical strength of the aluminum alloy-stabilizing member 311 can be easily enhanced, and thus, support and maintain the superconducting coil 310, irrespective of the strength of the magnetic field from the coil 310.
  • the diameter "d" of the superconducting wire 310 is preferably set to 2mm or below, particularly 0.8mm or below.
  • the diameter "D" of the superconducting coil member 31 is preferably set to 3mm or below, particularly 1.2mm or below.
  • the diameter d is preferably set to 0.2mm or over, particularly 0.4mm or over, and the diameter D is preferably set to 0.4mm or over, particularly 0.6mm or over.
  • the superconducting coil member 31 can have a rectangular shape, the length of one edge of which is set to the diameter D.
  • a magnetic field of high strength can be generated from the superconducting wire 310, that is, the superconducting coil member 31, and at the same time, the deformation of the superconducting wire 310 due to the electromagnetic force from the magnetic field can be prevented and thus, the configuration of the superconducting coil can be maintained as it is.
  • Fig. 6 is a schematic view showing a superconducting coil structure according to the present invention
  • Fig. 7 is a schematic view showing another superconducting coil structure according to the present invention.
  • two superconducting coils 30 as shown in Figs. 3 and 4 are provided so that the polarities are opposite to each other.
  • four superconducting coils 30 are provided so that two opposed coils are paired and the polarities of the paired coils are opposite to each other.
  • the magnetic flux generated from the superconducting coils 30 are passed therethrough to form a magnetic closed loop along the arrow direction. Therefore, no magnetic dipole moment is generated and if generated, magnetic dipole moment is cancelled in the superconducting coil structure.
  • the superconducting coil structure is disposed in order to generate a large scaled magnetic field of high strength in cosmic space, no interaction with earth magnetism of the coil structure occurs and thus, no torque is exerted on the superconducting coil structure. Accordingly, the superconducting coil structure can be disposed so as to generate a stable magnetic field of high strength in cosmic space without any additional support structure.
  • Fig. 8 is a schematic view showing a superconducting spectrometer according to the present invention.
  • the superconducting spectrometer illustrated in Fig. 8 includes the superconducting coil structure shown in Fig. 6. Then, particle detectors 40 are disposed in the paired superconducting coils 30 of the coil structure.
  • the magnetic flux generated from the superconducting coils 30 forms a magnetic closed loop along the arrow direction. Therefore, no magnetic dipole moment is generated in the superconducting spectrometer, and thus, a magnetic field of high strength can be generated from the superconducting spectrometer without the torque originated from the interaction with earth magnetism thereof.
  • charged particles can be deflected by the magnetic field and then, the kinetic momentums of the charged particles can be measured by the particle detectors 40.
  • the particle detector can be designed on the kind of the charged particles to be measured.
  • a lightened in weight and thinned superconducting magnet which can be utilized in order to generate a large scaled magnetic field of large strength in cosmic space or the like.
  • a superconducting coil structure utilizing the superconducting coil and forming no magnetic dipole moment can be provided.
  • a superconducting spectrometer utilizing the superconducting coil structure without torque impact due to the interaction with earth magnetism can be provided.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Containers, Films, And Cooling For Superconductive Devices (AREA)
  • Measurement Of Radiation (AREA)
EP03254403A 2002-07-12 2003-07-11 Aimant supraconducteur, enroulement supraconducteur et spectromètre supraconducteur Withdrawn EP1381059A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2002204573 2002-07-12
JP2002204573A JP4117372B2 (ja) 2002-07-12 2002-07-12 超伝導コイル

Publications (1)

Publication Number Publication Date
EP1381059A1 true EP1381059A1 (fr) 2004-01-14

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EP03254403A Withdrawn EP1381059A1 (fr) 2002-07-12 2003-07-11 Aimant supraconducteur, enroulement supraconducteur et spectromètre supraconducteur

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EP (1) EP1381059A1 (fr)
JP (1) JP4117372B2 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014162233A3 (fr) * 2013-04-05 2014-12-24 Koninklijke Philips N.V. Ensemble de bobines de gradient possédant des bobines externes comprenant de l'aluminium
CN113130164A (zh) * 2021-04-22 2021-07-16 华北电力大学 一种多层套管式的超导磁体及其制作方法
CN114783680A (zh) * 2022-06-17 2022-07-22 西部超导材料科技股份有限公司 一种量子计算机用超导线材的制备方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3470508A (en) 1966-08-05 1969-09-30 Comp Generale Electricite Superconducting winding
EP0444702A2 (fr) * 1990-03-02 1991-09-04 Hitachi, Ltd. Enroulement supra-conducteur et son procédé de fabrication, supra-conducteur composite et son procédé de fabrication, et appareil supra-conducteur
US5239276A (en) * 1990-03-08 1993-08-24 Bruker Analytische Messtechnik Gmbh Superconductive magnet coil arrangement
EP0874407A1 (fr) * 1997-04-25 1998-10-28 Hitachi Cable, Ltd. Supraconducteur stabilisé par de l'aluminium

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3470508A (en) 1966-08-05 1969-09-30 Comp Generale Electricite Superconducting winding
EP0444702A2 (fr) * 1990-03-02 1991-09-04 Hitachi, Ltd. Enroulement supra-conducteur et son procédé de fabrication, supra-conducteur composite et son procédé de fabrication, et appareil supra-conducteur
US5239276A (en) * 1990-03-08 1993-08-24 Bruker Analytische Messtechnik Gmbh Superconductive magnet coil arrangement
EP0874407A1 (fr) * 1997-04-25 1998-10-28 Hitachi Cable, Ltd. Supraconducteur stabilisé par de l'aluminium

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014162233A3 (fr) * 2013-04-05 2014-12-24 Koninklijke Philips N.V. Ensemble de bobines de gradient possédant des bobines externes comprenant de l'aluminium
CN105283934A (zh) * 2013-04-05 2016-01-27 皇家飞利浦有限公司 具有包括铝的外层线圈的梯度线圈组件
US10126389B2 (en) 2013-04-05 2018-11-13 Koninklijke Philips N.V. Gradient coil assembly with outer coils comprising aluminum
CN113130164A (zh) * 2021-04-22 2021-07-16 华北电力大学 一种多层套管式的超导磁体及其制作方法
CN113130164B (zh) * 2021-04-22 2023-02-28 华北电力大学 一种多层套管式的超导磁体及其制作方法
CN114783680A (zh) * 2022-06-17 2022-07-22 西部超导材料科技股份有限公司 一种量子计算机用超导线材的制备方法

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JP4117372B2 (ja) 2008-07-16
JP2004047813A (ja) 2004-02-12

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