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EP3176795B1 - Système de bobines magnétiques comprenant un supraconducteur anisotrope - Google Patents

Système de bobines magnétiques comprenant un supraconducteur anisotrope Download PDF

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Publication number
EP3176795B1
EP3176795B1 EP16200176.2A EP16200176A EP3176795B1 EP 3176795 B1 EP3176795 B1 EP 3176795B1 EP 16200176 A EP16200176 A EP 16200176A EP 3176795 B1 EP3176795 B1 EP 3176795B1
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Prior art keywords
coil
symmetry
axis
windings
superconductor
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German (de)
English (en)
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EP3176795A1 (fr
Inventor
Kenneth Günter
Patrik Vonlanthen
Robert Schauwecker
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Bruker Switzerland AG
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Bruker Switzerland AG
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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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/04—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
    • H01F41/048—Superconductive coils

Definitions

  • the invention relates to a superconductive, stepped magnetic coil arrangement with a hollow coil with a constant inner radius for generating an operating magnetic field in a working volume around an axis of symmetry, the coil comprising windings made of an anisotropic superconductor whose superconducting current-carrying capacity in a magnetic field perpendicular to the current direction in the conductor is Field amplitude as well as the field direction within a plane perpendicular to the direction of the current, the radially summed up number of turns along the axis of symmetry towards the edge being reduced in discrete steps or quasi-continuously.
  • Superconducting magnetic coils enable extremely energy-efficient generation of strong and temporally constant magnetic fields, since they can be operated with no or at least very low ohmic losses.
  • the electrical current carrying capacity of a superconductor is given c by its critical current I. If the electrical current in the conductor exceeds the value of I c , a phase transition to a normally conducting state takes place, in which the current no longer flows without resistance.
  • the current carrying capacity depends on the strength of the magnetic field to which it is exposed, but not on the direction of the magnetic field.
  • the current-carrying capacity is also influenced by the angle of the magnetic field to the conductor. This is the case, for example, with high-temperature superconductors (HTS) such as (RE)BCO or Bi-2223, whose underlying copper oxide structure has a two-dimensional character.
  • HTS high-temperature superconductors
  • RE RE
  • Bi-2223 whose underlying copper oxide structure has a two-dimensional character.
  • the critical current of an HTS ribbon conductor in a magnetic field perpendicular to the plane of the ribbon is typically lower than in a field parallel to the plane of the ribbon.
  • “Wound in layers” means that along the superconductor successive windings are mainly wound next to one another in layers along the axis of symmetry, it being possible for a constant radius to be assigned to each layer. This is in contrast to so-called pancake coils in which successive turns are primarily wound radially one on top of the other.
  • references [1] and [2] the current-carrying capacity of the coil is increased at the axial ends by using a superconductor with a higher current-carrying capacity (larger conductor cross-section, see reference [1]) for the corresponding windings. or superconductor type with higher critical current density see reference [2]) is used.
  • a disadvantage of this solution is that it is not possible to use a uniform superconductor in the coil and that the different conductor sections must be connected in a low-impedance manner for operation in a series circuit.
  • the cited references do not consider layer-wound coils, but rather those consisting of several sections or pancakes positioned axially along the axis.
  • Reference [4] discloses an arrangement in which the number of turns at the axial coil ends is reduced.
  • this known coil is an arrangement of several double “pancake” coils and not a layer-wound solenoid coil of the type defined in the opening paragraph. Furthermore, this arrangement is not intended to reduce the radial field component at the coil ends.
  • Reference [5] discloses a superconductive magnet coil arrangement with at least one section made of superconductive strip conductors, which is continuously wound in multiple layers, like a solenoid, in a cylindrical winding chamber between two end flanges, and which is characterized in that the section has an axial area of reduced current density or notch area having.
  • Reference [6] describes a superconducting homogeneous high-field magnetic coil in which the current density is reduced in the axial end area in such a way that the forces acting on the windings can be kept small.
  • Reference [7] discloses a superconductive magnet coil assembly containing at least one section of superconductive strip conductor continuously wound in a multi-layer, solenoid-like manner in a cylindrical winding chamber between two end flanges.
  • notch reduced current density
  • Stepped superconductor coils are also known from reference [12], where however no part connected at the edge is disclosed, or from reference [13], where however no winding layer is replaced with the insulating tape.
  • a generic stepped coil geometry with the characteristics defined above is known from reference [11] cited above, in which the inner diameter of the windings at the coil end is widened in order to reduce the influence of the vertical field component on the critical current density.
  • the inner coil radius is varied axially, which is not particularly advantageous for various reasons and diametrically opposed to the corresponding feature of a generic coil is opposite.
  • co-winding of non-superconducting material in a coil wound in layers with cylindrical symmetry in relation to the axis of symmetry z is not even hinted at.
  • reference [0] also cited above, describes a superconductive, stepped magnet coil arrangement, but deals exclusively with pancake coils and not with coils wound in layers in a cylindrically symmetrical manner on the axis of symmetry z, with the co-winding of non-superconductive material also not being disclosed.
  • the present invention is based on the object of modifying a superconductive magnet coil arrangement of the type defined at the beginning and a method for its design with particularly simple technical means in such a way that the limitations of such superconductive magnet coil arrangements discussed above, which typically occur at the axial ends of the coil , are significantly reduced and the current-carrying capacity of the coil is significantly increased.
  • the invention seeks to provide a generic stepped superconductor coil that is easy to manufacture and has minimal layer changes.
  • a superconductive magnet coil arrangement of the type defined at the outset, which is characterized in that the coil is wound in cylindrically symmetrical layers in relation to the axis of symmetry, with a axial coil end extending coherent part of a inner winding layer is wound with non-superconducting material.
  • the current-carrying capacity of coils that are wound from anisotropic superconductors is limited at the axial ends by the magnetic field component in the radial direction.
  • the present invention proposes a superconductive magnet coil arrangement which makes it possible to weaken this field component and increase the current-carrying capacity of the coil.
  • the current carrying capacity of the superconductor at the axial ends of the coil is increased by weakening the radial component of the magnetic field. According to the invention, this is achieved by reducing the number of turns in areas at the coil ends, with both the cross section and the type of superconductor used remaining unchanged.
  • the lower number of turns near the axial coil ends means that the radial magnetic flux is distributed axially over a larger area and the radial component of the magnetic field is locally smaller. This in turn increases the current-carrying capacity of the superconductor there and consequently of the entire coil.
  • An advantage of this arrangement according to the invention is the more uniform distribution of the current-carrying capacity of the superconductor throughout the coil. As a result, the superconductor is better utilized for the current flow, and the coil can be operated at a higher current. The amount of superconductor material required and thus the production costs are consequently lower than in comparable conventional arrangements.
  • the arrangement according to the invention is significantly more efficient due to the conscious choice of the winding distribution in the coil.
  • no additional winding body is required to implement the arrangement, which saves space and material costs.
  • the non-superconducting material wound towards the edge together with the superconducting material serves as filling material and contributes to the mechanical stability of the winding package.
  • the coil can be designed in such a way that the magnetic field generated has a field component B r perpendicular to the current direction and to the axis of symmetry, the maximum of which in the coil volume is at least 5% smaller than if, with the same operating field of the coil in the center of the working volume, the expansions of the fourth and fifth coil area would be shortened along the direction of the axis of symmetry towards the coil center, the relative shortening of the extensions depending on the ratio of the first number of coil edge turns to the maximum number of coil edge turns in the fourth coil area and the ratio of the second number of coil edge turns to corresponds to the maximum number of coil edge turns in the fifth coil area, with the same number of turns of the anisotropic superconductor in the coil, that the minimum of the superconducting current carrying capacity of the anisotropic superconductor in the coil is at least 3% higher than if, with the same operating field of the coil in the working volume, the Extensions of the fourth and fifth coil area along the direction of the axis
  • the radially total number of turns along the z-axis of symmetry is reduced in one or more discrete steps towards the edge in the fourth and/or fifth coil area of the magnet coil arrangement, the radial field component in the coil ends can be reduced and the current-carrying capacity can be significantly increased.
  • the radially totaled number of turns can be reduced quasi-continuously along the axis of symmetry z towards the edge. This enables even finer modeling of the radial field component along the axial coil ends and better optimization of the current-carrying capacity.
  • inventions in which the windings in the first radially delimited rectangular coil area are wound from a single uninterrupted piece of superconductor, ie without so-called joints, which connect different conductor sections to each other. This keeps the electrical resistance in the coil very low. Joints between HTS superconductors typically exhibit some electrical resistance and result in magnetic field drift unless the coil is supported by a power source. Joints, which are housed in the winding package of the coil, can also worsen the field homogeneity in the working volume. Last but not least, the winding of a single piece of conductor also has advantages in terms of production technology.
  • the second coil area is wound with at least 20%, in particular 40% to 60%, preferably about 50% fewer conductor turns than an axially adjoining coil area of the same geometry.
  • a class of embodiments of the coil arrangement according to the invention is very particularly preferred in which the magnetic field generated by the coil has a field component B r perpendicular to the current direction and to the axis of symmetry z, the maximum of which in the coil volume is at least 10%, preferably up to 50% smaller is as if - with the same operating field of the coil in the center of the working volume - the extensions of the fourth and fifth coil area along the direction of the axis of symmetry towards the coil center were shortened, with the relative shortening of the extensions corresponding to the ratio of the first and second number of coil edge turns to the maximum number of coil edge turns at the same remaining number of turns of the anisotropic superconductor in the coil.
  • the minimum of the superconducting current-carrying capacity of the anisotropic superconductor in the coil is at least 5%, in particular up to 30%, preferably up to 50% higher than if - with the same operating field of the coil in Center of the working volume - the extensions of the fourth and fifth coil area along the direction of the axis of symmetry towards the coil center would be shortened, with the relative shortening of the extensions corresponding to the ratio of the first and second number of coil edge turns to the maximum number of coil edge turns with the same number of turns of the anisotropic superconductor in the coil.
  • the greater the current-carrying capacity of the coil the larger the magnetic fields that can be generated, or the less superconductor material is required to generate a given field strength in the working volume.
  • non-superconducting material that is also wound includes foil inserts. Foils can be accommodated particularly well between the superconducting windings and can easily be cut to the desired geometry.
  • the number of turns on the axial coil ends is reduced in that no turns are wound on the coil edges over a number of layers lying directly one on top of the other.
  • the optimization areas can also protrude beyond the coil ends of the output coil, i.e. the optimized coil can definitely be longer axially than the output coil.
  • the exact winding distribution in the optimization areas can also be selected in such a way that it is advantageous in relation to the forces in the winding package and/or in terms of winding technology.
  • the advantage of this method is that it leads to a coil design that has an increased current-carrying capacity and that the coil requires a smaller total amount of superconductor than the output coil for operation at a given magnetic field strength.
  • FIG. 1 schematically illustrates a first embodiment of the magnet coil arrangement according to the invention.
  • the coil areas 1 to 5 can be defined within the rectangular coil cross section, which meet the specific requirements according to the invention, as will be described below.
  • a first radially delimited rectangular coil area 1 can be defined, which partially covers the coil cross section radially and completely along the axis of symmetry z and does not contain a fully wound winding layer.
  • the first coil area 1 also contains two sub-areas, which characterize the reduction in the number of turns at an axial end of the first coil area: a second coil area 2, which covers the first coil area 1 along the axis of symmetry over 10% of its length from the coil edge, and a third coil area 3, which adjoins the second coil area 2 and covers the first coil area 1 along the axis of symmetry over 40% of its length.
  • the second and third areas 2, 3 are characterized in that the number of turns in the second coil area 2 is at least four and a half times smaller than that in the third coil area 3.
  • the reduction in the number of turns at the axial coil ends leads to a reduction in the maximum radial field component and consequently to an increase in the current-carrying capacity, which is characterized by comparison with a modified arrangement.
  • a fourth coil area 4 and a fifth coil area 5 are defined, which cover the coil cross section radially completely and axially from one of the two coil edges 10% along the axis of symmetry z.
  • the fourth and fifth coil regions 4, 5 are shortened along the direction of the axis of symmetry towards the center of the coil, so that there would be no more space for the same number of superconductors.
  • the arrangement according to the invention is characterized in that its maximum radial field component is at least 5% smaller and its current-carrying capacity is at least 3% larger than in the comparative arrangement.
  • any position that is not fully wound can be defined as the first coil region 1 .
  • the third coil area 3 contained therein then contains 84 and thus 7 times (ie more than four and a half times) as many turns as the second coil area 2 with 12 turns.
  • the comparison coil is obtained, which is listed in the following table: conventional according to the invention comparison magnetic field 4.7d 4.7d 4.7d operating current 97.4A 122.0A 121.9A superconductor length 1351 m 1019 m 1019 m maximum radial field 1.8T 1.0 d 1.7 d ampacity 100.5A 125.2A 107.9A power usage 97% 97% 113%
  • the maximum radial field of the coil arrangement according to the invention is around 40% smaller than that of the comparison coil. Accordingly, the current carrying capacity is increased by 16%.
  • the coil according to the invention calculated in the example can be operated at a higher current thanks to the increased current-carrying capacity.
  • the amount of superconductor required for winding is reduced by 25%.
  • the Figures 2a to 2d show embodiments in which all turns in the first coil region are wound from a single continuous piece of superconductor.
  • the continuous lines in the winding pack of the figures 2a and 2c schematically represent the superconductor, and the dashed lines non-superconducting filler material.
  • the figures 2b and 2d are the the figures 2a and 2c corresponding coil areas 1';1"2';2"3';3" and 4 and 5, respectively.
  • the coil area 1' ( Figure 2b ) contains, for example, the radially third innermost, not fully wound layer.
  • the coil area 1" ( Fig. 2d ) includes the three radial according to the invention innermost, not fully wound layers.
  • the Figures 3a and 3b show an embodiment in which the reduction in the number of turns at the axial coil ends is achieved in that no turns are wound on the coil edges over a number of directly superimposed layers.
  • the continuous lines in the winding pack of the Figure 3a schematically represent the layer areas which are wound with superconductor.
  • the Figure 3b are those in the Figure 3a corresponding coil areas 1′′′ 2′′′ 3′′′ and 4 and 5 are shown.
  • coil regions 2 through 5 do not necessarily correspond to the boundaries between fully wound and non-fully wound regions in the coil.
  • the Figures 4a and 4b show a comparison of the radial fields at the edge of a conventional magnet coil arrangement and a magnet coil arrangement modified according to the invention.
  • Cylindrically symmetrical magnet coils are shown (section through a plane containing the axis of symmetry z) and the isofield lines of the radial component of the magnetic field. The outermost line corresponds to 0.25 T, and the field increases by 0.25 T with each line towards the maximum.
  • the number of turns at the axial ends is reduced.
  • the conventional arrangement shown in the prior art shows a reference coil with a homogeneous number of turns, which has the same inner and outer radius as the arrangement according to the invention, the coil length along the axis of symmetry being selected such that the same amount of conductors is wound as in the coil according to the invention.
  • the maximum radial field reaches a strength of approximately 1.75 T, while in the case of the invention arrangement with the same magnetic field strength in the center of the working volume is only approx. 1.0 T.
  • the coil according to the invention With the same current load but higher current, the coil according to the invention generates a larger magnetic field in its center than the conventional reference coil, since its current-carrying capacity is greater than that of the reference coil.
  • the number of turns of the superconductor is reduced in the axial edge areas compared to the central area.
  • the field lines represent the magnetic flux, with their density corresponding to the magnetic field strength. Due to the gradually reduced number of turns, the magnetic flux flowing around the coil ends is distributed over edge areas that are longer in the axial direction and is significantly diluted. Consequently, the magnetic field strength has a relatively small component in the radial direction (arrows).
  • Figure 5b shows a cylindrically symmetrical coil with homogeneous (full) current density according to the prior art with a constant number of turns along the axis of symmetry.
  • Figure 5a the axial ends are shortened towards the center of the coil so that the total number of turns of the coil is the same.
  • the known coil generates the same field strength in the center as the coil according to the invention. Due to the abruptly decreasing number of turns, however, the magnetic flux is concentrated at the axial edges of the coil. This
  • Flux concentration leads to a larger radial magnetic field component with a maximum at these locations (arrows).
  • FIG. 1 shows a coil according to the invention in which the current density at the axial ends has been reduced.
  • the magnetic field strength which corresponds to the density of the field lines, is significantly reduced at the ends of the coil according to the invention.
  • a major advantage of the arrangement according to the invention is, among other things, the more uniform distribution of the current-carrying capacity of the superconductor throughout the coil. As a result, the superconductor is better utilized and the coil can be operated at a higher current. The amount of superconductor required and thus the material costs are lower, or a higher magnetic field can be generated in the center of the coil with the same amount of superconductor.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)
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Claims (11)

  1. Agencement de bobine magnétique étagée supraconductrice comportant une bobine creuse de rayon intérieur constant conçue pour générer un champ magnétique de fonctionnement dans un volume de travail autour d'un axe de symétrie (z), la bobine comprenant des enroulements constitués d'un supraconducteur anisotrope dont la capacité de transport de courant supraconducteur dans un champ magnétique perpendiculaire à la direction du courant dans le conducteur dépend à la fois de l'amplitude du champ et de la direction du champ dans un plan perpendiculaire à la direction du courant, dans lequel le nombre additionné radialement des spires le long de l'axe de symétrie (z) est réduit vers le bord par pas discrets ou de façon quasi-continue,
    caractérisé en ce
    que la bobine est enroulée en plusieurs couches de manière cylindriquement symétrique par rapport à l'axe de symétrie (z), dans lequel une partie continue d'une couche d'enroulement intérieure s'étendant seulement à partir d'une extrémité de bobine axiale est enroulée avec un matériau non supraconducteur.
  2. Agencement de bobine selon la revendication 1, caractérisé en ce qu'il comprend une première zone de bobine rectangulaire délimitée radialement (1 ; 1′ ; 1ʺ ; 1‴) qui recouvre complètement la section transversale de bobine dans la direction de l'axe de symétrie et ne comprend pas de couche complètement enroulée dans la direction axiale, et les enroulements dans la première zone de bobine rectangulaire délimitée radialement (1 ; 1' ; 1" ; 1‴) sont enroulés à partir d'une seule pièce supraconductrice ininterrompue.
  3. Agencement de bobine selon l'une des revendications précédentes, caractérisé en ce qu'il comprend une deuxième zone de bobine rectangulaire délimitée radialement (2 ; 2' ; 2" ; 2‴) à l'intérieur de la première zone de bobine (1 ; 1′ ; 1ʺ ; 1‴), laquelle recouvre la première zone de bobine (1 ; 1′ ; 1ʺ ; 1‴) complètement radialement et à 10 % dans la direction de l'axe de symétrie et entoure le premier ou le deuxième bord de bobine dans la direction axiale, et la deuxième zone de bobine (2 ; 2′ ; 2ʺ ; 2‴) est enroulée avec au moins 20 % de spires de conducteur en moins qu'une zone de bobine axialement adjacente de même géométrie.
  4. Agencement de bobine selon la revendication 3, caractérisé en ce que la deuxième zone de bobine (2 ; 2′ ; 2ʺ ; 2‴) est enroulée avec 40 % à 60 % de spires de conducteur en moins qu'une zone de bobine axialement adjacente de même géométrie.
  5. Agencement de bobines selon la revendication 4, caractérisé en ce que la deuxième zone de bobine (2 ; 2′ ; 2ʺ ; 2‴) est enroulée avec environ 50 % de spires de conducteur en moins qu'une zone de bobine axialement adjacente de même géométrie.
  6. Agencement de bobine selon l'une des revendications précédentes, caractérisé en ce qu'il comprend, à l'intérieur de la section transversale de bobine, une quatrième et une cinquième zone rectangulaire de bobine (respectivement 4, 5), qui recouvrent la section transversale de bobine complètement radialement et à 10 % chacune dans la direction de l'axe de symétrie et qui entourent le premier et le deuxième bord de bobine dans la direction axiale avec un premier et un deuxième nombre de spires de bord de bobine, donnés par le nombre de spires du supraconducteur anisotrope dans la quatrième et la cinquième zone de bobine (respectivement 4, 5), et avec un nombre maximal de spires de bord de bobine, donné par le quotient de la surface de section transversale de la quatrième ou de la cinquième zone de bobine (respectivement 4, 5) et de la surface de section transversale du supraconducteur anisotrope, et le champ magnétique généré par la bobine présente une composante de champ Br perpendiculaire à la direction du courant et à l'axe de symétrie (z), dont le maximum dans le volume de bobine est inférieur d'au moins 10 % à ce qu'il serait si - pour un même champ de fonctionnement de la bobine au centre du volume de travail - les étendues des quatrième et cinquième zones de bobine (respectivement 4, 5) étaient raccourcies dans la direction de l'axe de symétrie vers le centre de bobine, le raccourcissement relatif des étendues correspondant au rapport entre le premier et le deuxième nombre de spires de bord de bobine et le nombre maximal de spires de bord de bobine, le nombre de spires du supraconducteur anisotrope dans la bobine restant constant.
  7. Agencement de bobine selon la revendication 6, caractérisé en ce que le champ magnétique généré par la bobine présente une composante de champ Br perpendiculaire à la direction du courant et à l'axe de symétrie (z), dont le maximum dans le volume de bobine est inférieur de jusqu'à 50 % à ce qu'il serait si - pour un même champ de fonctionnement de la bobine au centre du volume de travail - les étendues des quatrième et cinquième zones de bobine (respectivement 4, 5) étaient raccourcies dans la direction de l'axe de symétrie vers le centre de bobine, le raccourcissement relatif des étendues correspondant au rapport entre le premier et le deuxième nombre de spires de bord de bobine et le nombre maximal de spires de bord de bobine, le nombre de spires du supraconducteur anisotrope dans la bobine restant constant.
  8. Agencement de bobine selon l'une des revendications précédentes, caractérisé en ce que le minimum de la capacité de transport de courant supraconducteur du supraconducteur anisotrope le long de la trajectoire du conducteur dans la bobine est plus élevé d'au moins 5 % que si - pour un même champ de fonctionnement de la bobine au centre du volume de travail - les étendues des quatrième et cinquième zones de bobine (respectivement 4, 5) étaient raccourcies dans la direction de l'axe de symétrie vers le centre de bobine, le raccourcissement relatif des étendues correspondant au rapport entre le premier et le deuxième nombre de spires de bord de bobine et le nombre maximal de spires de bord de bobine, le nombre de spires du supraconducteur anisotrope dans la bobine restant constant.
  9. Agencement de bobine selon la revendication 8, caractérisé en ce que le minimum de la capacité de transport de courant supraconducteur du supraconducteur anisotrope le long de la trajectoire du conducteur dans la bobine est plus élevé de jusqu'à 30 % que si - pour un même champ de fonctionnement de la bobine au centre du volume de travail - les étendues des quatrième et cinquième zones de bobine (respectivement 4, 5) étaient raccourcies dans la direction de l'axe de symétrie vers le centre de bobine, le raccourcissement relatif des étendues correspondant au rapport entre le premier et le deuxième nombre de spires de bord de bobine et le nombre maximal de spires de bord de bobine, le nombre de spires du supraconducteur anisotrope dans la bobine restant constant.
  10. Agencement de bobine selon la revendication 9, caractérisé en ce que le minimum de la capacité de transport de courant supraconducteur du supraconducteur anisotrope le long de la trajectoire du conducteur dans la bobine est plus élevé de jusqu'à 50 % que si - pour un même champ de fonctionnement de la bobine au centre du volume de travail - les étendues des quatrième et cinquième zones de bobine (respectivement 4, 5) étaient raccourcies dans la direction de l'axe de symétrie vers le centre de bobine, le raccourcissement relatif des étendues correspondant au rapport entre le premier et le deuxième nombre de spires de bord de bobine et le nombre maximal de spires de bord de bobine, le nombre de spires du supraconducteur anisotrope dans la bobine restant constant.
  11. Procédé de conception d'un agencement de bobine magnétique supraconductrice selon l'une des revendications précédentes, caractérisé en ce que, en partant d'un agencement de bobine magnétique supraconductrice comportant une bobine enroulée en couches de manière cylindriquement symétrique par rapport à l'axe de symétrie (z) et constituée d'un supraconducteur anisotrope, dans laquelle, dans la première zone de bobine (1 ; 1′ ; 1ʺ ; 1‴) le long de l'axe de symétrie (z) vers le bord, un matériau non supraconducteur est également enroulé avec le matériau supraconducteur, la capacité de transport de courant de la bobine étant limitée aux extrémités axiales par la composante de champ magnétique radiale, en diminuant le nombre de spires dans les zones d'extrémité axiales de la bobine (= « zones d'optimisation »), on réduit la composante de champ magnétique radiale maximale, dans lequel, en faisant varier les paramètres suivants :
    - taille des zones d'optimisation dans lesquelles on diminue le nombre de spires,
    - nombre de spires dans les zones d'optimisation,
    - répartition des spires à l'intérieur des zones d'optimisation,
    on augmente la capacité de transport de courant supraconducteur de la bobine.
EP16200176.2A 2015-12-02 2016-11-23 Système de bobines magnétiques comprenant un supraconducteur anisotrope Active EP3176795B1 (fr)

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DE102015223991.8A DE102015223991A1 (de) 2015-12-02 2015-12-02 Magnetspulenanordnung mit anisotropem Supraleiter und Verfahren zu deren Auslegung

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EP3176795A1 EP3176795A1 (fr) 2017-06-07
EP3176795B1 true EP3176795B1 (fr) 2022-01-26

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5914647A (en) * 1994-01-24 1999-06-22 American Superconductor Corporation Superconducting magnetic coil
GB2519811A (en) * 2013-10-31 2015-05-06 Siemens Plc Superconducting magnet assembly

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6165411A (ja) * 1984-09-07 1986-04-04 Mitsubishi Electric Corp 超電導装置
DE3923456A1 (de) 1989-07-15 1991-01-24 Bruker Analytische Messtechnik Supraleitende homogene hochfeldmagnetspule
JP3340152B2 (ja) * 1992-06-22 2002-11-05 株式会社東芝 超電導マグネット
US5659277A (en) 1994-09-07 1997-08-19 American Superconductor Corporation Superconducting magnetic coil
US5581220A (en) 1994-10-13 1996-12-03 American Superconductor Corporation Variable profile superconducting magnetic coil
DE102004043987B3 (de) 2004-09-11 2006-05-11 Bruker Biospin Gmbh Supraleitfähige Magnetspulenanordnung
DE102004043988B3 (de) 2004-09-11 2006-05-11 Bruker Biospin Gmbh Supraleitfähige Magnetspulenanrordnung
DK2599134T3 (da) * 2010-07-30 2015-04-13 Babcock Noell Gmbh Højtemperatur-superleder-magnetsystem
US9117578B2 (en) 2012-03-13 2015-08-25 Massachusetts Institute Of Technology No-insulation multi-width winding for high temperature superconducting magnets
US20160351310A1 (en) * 2013-05-29 2016-12-01 Christopher Mark Rey Low Temperature Superconductive and High Temperature Superconductive Amalgam Magnet

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5914647A (en) * 1994-01-24 1999-06-22 American Superconductor Corporation Superconducting magnetic coil
GB2519811A (en) * 2013-10-31 2015-05-06 Siemens Plc Superconducting magnet assembly

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EP3176795A1 (fr) 2017-06-07
US20170162310A1 (en) 2017-06-08
US10332665B2 (en) 2019-06-25

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