CN101794653B - Superconducting magnet generating rotating magnetic field - Google Patents
Superconducting magnet generating rotating magnetic field Download PDFInfo
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- CN101794653B CN101794653B CN2010101232722A CN201010123272A CN101794653B CN 101794653 B CN101794653 B CN 101794653B CN 2010101232722 A CN2010101232722 A CN 2010101232722A CN 201010123272 A CN201010123272 A CN 201010123272A CN 101794653 B CN101794653 B CN 101794653B
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- coil
- magnetic field
- principal axis
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- superconducting magnet
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- 229910001275 Niobium-titanium Inorganic materials 0.000 claims description 17
- RJSRQTFBFAJJIL-UHFFFAOYSA-N niobium titanium Chemical compound [Ti].[Nb] RJSRQTFBFAJJIL-UHFFFAOYSA-N 0.000 claims description 17
- 239000002887 superconductor Substances 0.000 claims description 5
- 229910052734 helium Inorganic materials 0.000 claims description 4
- 239000001307 helium Substances 0.000 claims description 4
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 claims description 4
- 238000005057 refrigeration Methods 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 229910000657 niobium-tin Inorganic materials 0.000 claims 2
- 239000000463 material Substances 0.000 abstract description 10
- 230000000694 effects Effects 0.000 abstract 1
- 239000010955 niobium Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 4
- 230000003287 optical effect Effects 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 239000000110 cooling liquid Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
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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
Abstract
The invention provides a superconducting magnet structure with high magnetic field, large homogeneity range and rotating magnetic field. In the structure, a superconductive main coil (4) in the z-axis direction supplies a strong background magnetic field, and a Helmholtz coil pair (3) in the z-axis direction supplies a magnetic field of z-axis direction changes; a racetrack-shaped superconductive coil pair (5) supplies the magnetic field of the x direction; and a racetrack-shaped superconductive coil pair (6) in the y direction supplies the magnetic field of y direction changes. The current amplitude and the current direction of the coils in the directions of x, y and z can be controlled through a computer so that the required rotating magnetic field is obtained in the center of the superconducting magnet. The superconducting magnet system is used in occasions for studying physical characteristics, such as materials, magnetic-optic effect and the like under the combined action of a multiphysics field and under an extreme condition.
Description
Technical field
The present invention relates to a kind of superconducting magnet, particularly a kind of highfield superconducting magnet that produces rotating magnetic field.
Background technology
Rotating magnetic field has important use at aspects such as material growth and physical characteristic mensuration.The aspects such as related physical attribute that at present the highfield superconducting magnet is that the physical characteristic of special crystal material growth, magneto optical effect, metal material changes, the growth of functionally gradient material (FGM) and being used to changes material provide specific background magnetic field, can effectively magnetic field energy contactlessly be passed to the molecule and the atom of material.And the difference of size changes the rotation amplitude in magnetic field and the size of spatial dimension per sample.The magnetic field of this inner rotary specific direction also is the important instrument of research quantum device characteristic.The superconducting magnet that is used for extraordinary crystalline structure growth is at present mainly carried out the adjusting of magnetic field rotation changes in amplitude through the mechanical moving element method; Conventional permanent magnetism mainly adopts the mode of rotary magnet; This method is less for the technical difficulty of making magnet itself, but magnetic field intensity is lower.Adopt niobium titanium (NbTi) and niobium three tin (Nb
3Sn) superconducting magnet of superconductor development can produce higher magnetic field superconducting magnet, if adopt the method for rotary magnet, magnet is in low-temperature (low temperature) vessel inside on the one hand, and rotary magnet makes cryogenic system comparatively complicated.Simultaneously higher for the operating cost of system.The development trend of the highfield superconducting magnet system of industry and scientific instrument use at present is simple in structure, and systematic running cost is with cheap and easy to operate.
The superconducting magnet that produces rotating magnetic field is used multiple physical field acting in conjunction under extreme conditions in occasions such as physical characteristic research such as material, magneto optical effects, needs rotating magnetic field constantly to regulate change.The electromagnetic structure of this superconducting magnet and the ordinary magnet complex structure of comparing, outstanding feature is that magnet has a continuously adjustable highfield.The highfield superconducting magnet that produces rotating magnetic field in the space can be used in material growth and physical characteristics of materials research, is applied in the science device of scientific instrument and extreme condition research.
Summary of the invention
The objective of the invention is to overcome the complicated shortcoming of existing rotation superconducting magnet structure, propose a kind of superconducting magnet of provided arbitrary speed rotating magnetic field newly.Superconducting magnet system of the present invention is simple in structure, has the cheap and advantage easily of operating cost.
According to the available homogeneity range scope of magnitude of field intensity and magnetic field, the present invention proposes three kinds and produces the rotating magnetic field superconducting magnet structure.
Scheme one:
Superconducting magnet of the present invention produces lower magnetic field for example during the central magnetic field of 5～6T, described superconducting magnet comprise x direction of principal axis Helmholtz coil to, y direction of principal axis Helmholtz coil to right with z direction of principal axis Helmholtz coil.X direction of principal axis Helmholtz coil is to providing the magnetic field of x direction through series-fed, y direction of principal axis Helmholtz coil is to providing the magnetic field of y direction through series-fed, and z direction of principal axis Helmholtz coil is to supplying to provide the magnetic field of z direction through series connection.X direction of principal axis Helmholtz coil is to being arranged on the x axle, and y direction of principal axis Helmholtz coil is to being arranged on the y axle, and z direction of principal axis Helmholtz coil is to being arranged on the z axle.X axle, y axle and z axle spatially are vertically intersected on initial point each other.X direction of principal axis Helmholtz coil to, y direction of principal axis Helmholtz coil to processing using niobium titanium filaments wire rod with z direction of principal axis Helmholtz coil.Three pairs of coils are to power supply separately respectively, and through the electric current I x of computer control coil, the amplitude of Iy and Iz and sense of current can obtain needed rotating magnetic field at the center.The superconducting coil that constitutes superconducting magnet adopts NbTi filaments wire rod, and superconducting coil uses liquid helium to soak cooling.
Scheme two:
For the little homogeneity range rotating magnetic field in highfield, superconducting magnet of the present invention increases a z direction of principal axis superconduction main coil on the basis of one or three pairs of Helmholtz coils of scheme.Main coil provides higher background magnetic field, and other three pairs of Helmholtz coils are provided at the magnetic field that the space can change.Change the amplitude size of the intensity in the spatial orientation that changes magnetic direction and magnetic field with the certain time sequence electric current.Z direction of principal axis superconduction main coil produces constant background magnetic field.Arrange z direction of principal axis superconduction main coil on the z axle, arrange that along the z axle z direction of principal axis Helmholtz coil is right in the outside of z axle superconduction main coil.X direction of principal axis Helmholtz coil is to being arranged on the x axle, and y direction of principal axis Helmholtz coil is to being arranged on the y axle.X axle, y axle and z axle spatially are vertically intersected on initial point each other.Electric current through changing described three pairs of Helmholtz coils can obtain the adjustable rotating magnetic field of three-dimensional in the space.The central magnetic field that produces is higher than 10T, and z direction of principal axis superconduction main coil adopts NbTi and Nb
3The combination of Sn coil, other three pairs of Helmholtz coils use the NbTi superconducting line.
Scheme three:
Be higher than the big homogeneity range rotating magnetic field in 10T highfield for magnetic field; Superconducting magnet of the present invention adopts a z direction of principal axis superconduction main coil to produce main field; Use two pairs of runways or saddle-shaped coil distribution outside, produce the magnetic field of even variation direction at described z direction of principal axis superconduction main coil.Because runway or saddle-type coil has certain length, therefore, can obtain uniform magnetic field in the larger context in the direction of z direction of principal axis superconduction main coil.Superconducting magnet of the present invention comprises z direction of principal axis superconduction main coil, and z direction Helmholtz coil is right, and x direction track shape superconducting coil is right, and y direction track shape superconducting coil is right.Z direction of principal axis superconduction main coil provides stronger background magnetic field, the magnetic field of z direction Helmholtz coil to providing the z direction of principal axis to change, and x direction track shape superconducting coil is to providing the magnetic field of x direction, the magnetic field of y direction track shape superconducting coil to providing the y direction to change.On the z axle, arrange z direction of principal axis superconduction main coil, arrange that along the z axle z direction of principal axis Helmholtz coil is right in the outside of z axle superconduction main coil.Arrange that on the x axle x direction track shape superconducting coil is right, arrange that on the y axle y direction track shape superconducting coil is right.X axle, y axle and z axle spatially are vertically intersected on initial point each other.Z direction Helmholtz coil to x direction track shape superconducting coil to y direction track shape superconducting coil to adopting niobium titanium filaments wire rod.The central magnetic field of superconducting magnet of the present invention is less than 10T, and z direction of principal axis superconduction main coil adopts niobium titanium filaments wire rod.If central magnetic field is greater than 10T, z direction of principal axis superconduction main coil adopts NbTi and Nb
3The combination of Sn coil.If central magnetic field is greater than 20T, z direction of principal axis superconduction main coil adopts low temperature and high temperature coil combination.Superconducting magnet is used refrigeration machine and liquid helium cooling.
Z direction of principal axis superconduction main coil of the present invention adopts the mode of low-temperature superconducting coil and high temperature superconductor coil combination.Other coils adopt NbTi or high temperature superconductor coil all can.Z direction of principal axis superconduction main coil produces higher central magnetic field, thereby track shape that place the outside or saddle-type coil and other a pair of Helmholtz coil obtain rotating magnetic field with certain sequence change electric current.
Superconducting magnet of the present invention has the advantages that magnetic field orientating is regulated continuously.The superconducting magnet structure compact.The mode that magnet adopts refrigeration machine directly to cool off.Thereby greatly improve the utilization ratio of superconducting coil, reduce the distance of some Separations.
The mode that superconducting magnet of the present invention adopts refrigeration machine cooling liquid helium or directly cools off.The wire rod of superconducting coil can be a hts tape, or Nb
3The combination of Sn and high-temperature superconductor, or NbTi or Nb
3The combination of Sn coil, or the combination of three kinds of materials are to form higher magnetic field.
Description of drawings
Fig. 1 scheme one has the superconducting magnet structure figure that three pairs of Helmholtz coils are formed, and among the figure: 1x direction of principal axis Helmholtz coil is right, and 2y direction of principal axis Helmholtz coil is right, and 3z direction of principal axis Helmholtz coil is right;
Fig. 2 scheme two has high magnetic field intensity rotating magnetic field superconducting magnet structure figure, among the figure: 4z direction of principal axis superconduction main coil;
Fig. 3 scheme three has the superconducting magnet structure figure of the rotating magnetic field of big homogeneous area, and among the figure: 5x direction track shape superconducting coil is right, and 6y direction track shape superconducting coil is right.
Embodiment
Further specify the present invention below in conjunction with accompanying drawing and embodiment.
As shown in Figure 1; The present invention program one is for being applicable to the structure of generation than the superconducting magnet of downfield; X direction of principal axis Helmholtz coil provides the magnetic field of x direction to 1 through series-fed; Y direction of principal axis Helmholtz coil provides the magnetic field of y direction to 2 through series-fed, and z direction of principal axis Helmholtz coil supplies to provide the magnetic field of z direction to 3 through series connection.Three pairs of Helmholtz coils all can use the niobium titanium low-temperature superconducting wire of extra fine filament to process to 1,2 and 3.The electric current that the three pairs of Helmholtz coils pass through is I
x, I
yAnd I
z, three pairs of coils use independently power supply power supply respectively.Electric current I through the computer control coil
x, I
yAnd I
zAmplitude and sense of current, can obtain needed rotating magnetic field at the superconducting magnet center.X direction of principal axis Helmholtz coil is arranged on the x axle 1, and y direction of principal axis Helmholtz coil is arranged on the y axle 2, and z direction of principal axis Helmholtz coil is arranged on the z axle 3, and x axle, y axle and z axle spatially are vertically intersected on initial point each other.
As shown in Figure 2, for being suitable for the highfield, uses the background magnetic field that further improves superconducting magnet system, suitably increase the scope of magnetic field homogeneity range simultaneously.The present invention program two superconducting magnet structure is on the basis of scheme one; On the z direction, be positioned at z direction of principal axis Helmholtz coil 3 center is increased a z direction of principal axis superconduction main coil 4; Z direction of principal axis superconduction main coil 4 provides higher constant background magnetic field, and other three pairs of Helmholtz coils are provided at the magnetic field that the space can change.Arrange z direction of principal axis superconduction main coil 4 on the z axle, arrange that along the z axle z direction of principal axis Helmholtz coil is to 3 in the outside of z axle superconduction main coil 4.X direction of principal axis Helmholtz coil to 1 be arranged on the x axle, y direction of principal axis Helmholtz coil is arranged on the y axle 2.X axle, y axle and z axle spatially are vertically intersected on initial point each other.Electric current through changing described three pairs of Helmholtz coils obtains the adjustable rotating magnetic field of three-dimensional in the space.Z direction of principal axis superconducting coil 4 uses NbTi and Nb
3The combination of Sn superconducting coil perhaps uses the combination of low temperature and hts tape so that higher magnetic field intensity to be provided, and other three pairs of Helmholtz coils use the NbTi superconducting line.
As shown in Figure 3, in order further to improve the service efficiency of coil, the scope of big homogeneous area is provided simultaneously, the present invention program three is the superconducting magnet structure of a big homogeneity range rotating magnetic field in highfield.Z direction of principal axis superconduction main coil 4 provides stronger background magnetic field, and this coil uses NbTi and Nb
3The combination of Sn wire rod, if produce the above magnetic field of 20T, z direction of principal axis superconduction main coil 4 uses low temperature and hts tape combination.Z direction Helmholtz coil to 3 provide the z direction of principal axis to change magnetic field.5 pairs of magnetic fields that the x direction is provided of x direction track shape superconducting coil, y direction track shape superconducting coil to 6 provide the y direction to change magnetic field.On the z axle, arrange z direction of principal axis superconduction main coil 4, arrange that along the z axle z direction of principal axis Helmholtz coil is to 3 in the outside of z axle superconduction main coil.On the x axle, arrange x direction track shape superconducting coil to 5, arrange that on the y axle y direction track shape superconducting coil is to 6.X axle, y axle and z axle spatially are vertically intersected on initial point each other.Three pairs of coils use independently power supply power supply respectively.Electric current I through the described x of computer control, y, z coil
x, I
yAnd I
zAmplitude and sense of current, can obtain needed rotating magnetic field at described superconducting magnet center.Z direction of principal axis superconduction main coil 4 provides stable background magnetic field by other power supply power supply.
Claims (2)
1. a superconducting magnet that produces rotating magnetic field is characterized in that described superconducting magnet comprises z direction of principal axis superconduction main coil (4), and z direction of principal axis Helmholtz coil is to (3), and x direction track shape superconducting coil is to (5), and y direction track shape superconducting coil is to (6); Z direction of principal axis superconduction main coil (4) provides stronger background magnetic field; The magnetic field that z direction of principal axis Helmholtz coil provides the z direction of principal axis to change to (3); X direction track shape superconducting coil provides the magnetic field of x direction to (5), the magnetic field that y direction track shape superconducting coil provides the y direction to change to (6); On the z axle, arrange z direction of principal axis superconduction main coil (4), arrange that along the z axle z direction of principal axis Helmholtz coil is to (3) in the outside of z axle superconduction main coil (4); On the x axle, arrange x direction track shape superconducting coil to (5), arrange that on the y axle y direction track shape superconducting coil is to (6); X axle, y axle and z axle spatially are vertically intersected on initial point each other; Z direction of principal axis Helmholtz coil adopts niobium titanium filaments wire rod coiling to (5) and y direction track shape superconducting coil to (6) to (3) and x direction track shape superconducting coil; If the central magnetic field of described superconducting magnet is less than 10T, z direction of principal axis superconduction main coil (4) adopts the coiling of niobium titanium filaments wire rod; If less than 20T, then z direction of principal axis superconduction main coil (4) adopts NbTi and Nb3Sn coil combination to the central magnetic field that described superconducting magnet produces greater than 10T; If the generation central magnetic field of described superconducting magnet is greater than 20T, then z direction of principal axis superconduction main coil (4) adopts low temperature and high temperature superconductor coil combination; Described superconducting magnet is used refrigeration machine and liquid helium cooling,
Described z direction of principal axis Helmholtz coil is independently-powered respectively to (6) to (5) and y direction track shape superconducting coil to (3), x direction track shape superconducting coil; Through computer control x direction coil to electric current I
x, y direction coil is to electric current I
yWith the right electric current I of z direction coil
zAmplitude and direction, obtain needed rotating magnetic field at described superconducting magnet center; Z direction of principal axis superconduction main coil (4) is supplied power separately by a power supply.
2. a superconducting magnet that produces rotating magnetic field is characterized in that, described superconducting magnet adopts the structure of three pairs of Helmholtz coils and a z direction of principal axis superconduction main coil (4); Described z direction of principal axis superconduction main coil (4) provides constant background magnetic field, and other three pairs of Helmholtz coils are provided at space varying magnetic field; Arrange z direction of principal axis superconduction main coil (4) on the z axle, arrange that along the z axle z direction of principal axis Helmholtz coil is to (3) in the outside of z axle superconduction main coil (4); X direction of principal axis Helmholtz coil is arranged on the x axle to (1), y direction of principal axis Helhmoltz coil is arranged on the y axle (2); X axle, y axle and z axle spatially are vertically intersected on initial point each other; Electric current through changing described three pairs of Helmholtz coils obtains the adjustable rotating magnetic field of three-dimensional in the space; The central magnetic field that produces like described superconducting magnet is higher than 10T, and z direction of principal axis superconduction main coil (4) adopts the combination of NbTi and Nb3Sn coil, and other three pairs of Helmholtz coils use the NbTi superconducting line.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101232722A CN101794653B (en) | 2010-03-12 | 2010-03-12 | Superconducting magnet generating rotating magnetic field |
| PCT/CN2010/002186 WO2011109929A1 (en) | 2010-03-12 | 2010-12-28 | Superconductive magnet generating rotating magnetic field |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101232722A CN101794653B (en) | 2010-03-12 | 2010-03-12 | Superconducting magnet generating rotating magnetic field |
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| CN101794653A CN101794653A (en) | 2010-08-04 |
| CN101794653B true CN101794653B (en) | 2012-02-29 |
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| WO (1) | WO2011109929A1 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101794653B (en) * | 2010-03-12 | 2012-02-29 | 中国科学院电工研究所 | Superconducting magnet generating rotating magnetic field |
| CN108575042B (en) * | 2017-03-09 | 2021-04-09 | 北京北方华创微电子装备有限公司 | Coil, medium cylinder and plasma cavity |
| CN110129890B (en) | 2018-03-30 | 2021-02-02 | 杭州慧翔电液技术开发有限公司 | Coil structure for magnetically controlled Czochralski single crystal and method for magnetically controlled Czochralski single crystal |
| CN109765510B (en) * | 2019-02-20 | 2021-04-27 | 中国科学院电工研究所 | Method for designing radial superconducting shimming coil with fillet |
| CN111212490B (en) * | 2020-02-17 | 2022-02-01 | 中国科学院电工研究所 | Superconducting induction heating device capable of simultaneously heating multiple workpieces |
| CN112735732B (en) * | 2020-12-10 | 2022-09-06 | 中国科学院深圳先进技术研究院 | Mixed magnetic field device and mixed magnetic field system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4814707A (en) * | 1987-06-17 | 1989-03-21 | Texas Instruments Incorporated | Scalar magnetometer with vector capabilities |
| CN101266863A (en) * | 2008-01-17 | 2008-09-17 | 华北电力大学 | Magnetic body device with continuously changing magnetic field intensity and direction |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06181902A (en) * | 1992-12-16 | 1994-07-05 | Toshiba Corp | Mri magnet |
| CN100477026C (en) * | 2004-08-27 | 2009-04-08 | 中国科学院电工研究所 | Superconductor magnet for magnetic surgical operation and coil winding method thereof |
| WO2007032472A1 (en) * | 2005-09-16 | 2007-03-22 | Japan Science And Technology Agency | Superconducting magnet and electromagnetic mixer using the same |
| JP2009240061A (en) * | 2008-03-27 | 2009-10-15 | Sumitomo Electric Ind Ltd | Superconducting actuator |
| JP4937196B2 (en) * | 2008-06-17 | 2012-05-23 | 株式会社東芝 | Superconducting coil device |
| CN101794653B (en) * | 2010-03-12 | 2012-02-29 | 中国科学院电工研究所 | Superconducting magnet generating rotating magnetic field |
-
2010
- 2010-03-12 CN CN2010101232722A patent/CN101794653B/en not_active Expired - Fee Related
- 2010-12-28 WO PCT/CN2010/002186 patent/WO2011109929A1/en active Application Filing
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4814707A (en) * | 1987-06-17 | 1989-03-21 | Texas Instruments Incorporated | Scalar magnetometer with vector capabilities |
| CN101266863A (en) * | 2008-01-17 | 2008-09-17 | 华北电力大学 | Magnetic body device with continuously changing magnetic field intensity and direction |
Non-Patent Citations (1)
| Title |
|---|
| JP平6-181902A 1994.07.05 |
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| Publication number | Publication date |
|---|---|
| WO2011109929A1 (en) | 2011-09-15 |
| CN101794653A (en) | 2010-08-04 |
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