CN116364381B - Diode magnet structure with translation and bending functions - Google Patents
Diode magnet structure with translation and bending functions Download PDFInfo
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- CN116364381B CN116364381B CN202310217772.XA CN202310217772A CN116364381B CN 116364381 B CN116364381 B CN 116364381B CN 202310217772 A CN202310217772 A CN 202310217772A CN 116364381 B CN116364381 B CN 116364381B
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- 238000005452 bending Methods 0.000 title claims abstract description 76
- 239000002245 particle Substances 0.000 claims abstract description 40
- 238000004804 winding Methods 0.000 claims description 6
- 230000002457 bidirectional effect Effects 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 4
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000005469 synchrotron radiation Effects 0.000 description 1
- 230000001225 therapeutic 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
- H01F6/06—Coils, e.g. winding, insulating, terminating or casing arrangements therefor
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
- H05H13/00—Magnetic resonance accelerators; Cyclotrons
- H05H13/04—Synchrotrons
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
- H05H7/00—Details of devices of the types covered by groups H05H9/00, H05H11/00, H05H13/00
- H05H7/04—Magnet systems, e.g. undulators, wigglers; Energisation thereof
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
- H05H7/00—Details of devices of the types covered by groups H05H9/00, H05H11/00, H05H13/00
- H05H7/04—Magnet systems, e.g. undulators, wigglers; Energisation thereof
- H05H2007/043—Magnet systems, e.g. undulators, wigglers; Energisation thereof for beam focusing
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
- H05H7/00—Details of devices of the types covered by groups H05H9/00, H05H11/00, H05H13/00
- H05H7/04—Magnet systems, e.g. undulators, wigglers; Energisation thereof
- H05H2007/046—Magnet systems, e.g. undulators, wigglers; Energisation thereof for beam deflection
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
- H05H2277/00—Applications of particle accelerators
- H05H2277/10—Medical devices
- H05H2277/11—Radiotherapy
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Power Engineering (AREA)
- Optics & Photonics (AREA)
- Particle Accelerators (AREA)
Abstract
The invention relates to a diode magnet structure with translation and bending functions, which comprises an inner layer magnet coil and an outer layer magnet coil, and a diode magnet formed by embedding the inner layer magnet coil and the outer layer magnet coil inside and outside, wherein the inner layer magnet coil comprises a double-direction bent oblique spiral tube coil, the outer layer magnet coil comprises a double-direction bent oblique spiral tube coil with an inclination angle opposite to that of the inner coil, the whole magnet coil is bent along the +X direction and then bent along the-X direction to form the double-direction bent diode magnet structure, and the coils of the inner layer bent oblique spiral tube magnet coil and the outer layer oblique spiral tube magnet coil have opposite inclination angles to form a diode magnet magnetic field pattern. The magnet structure can realize the twice deflection of particles in the positive direction and the negative direction, change the motion trail of the particles, and realize the function that the particles are ejected from the horizontal direction and then ejected from the horizontal direction and simultaneously translate in the vertical direction.
Description
Technical Field
The invention belongs to the technical field of magnet structures, and particularly relates to a diode magnet structure with translation and bending functions.
Background
The diode magnet, also called a turning magnet, has the effect of deflecting particles passing through its interior. The dipolar magnet has important application in the basic research and civil biomedical fields such as particle collimators, particle accelerators, synchrotron radiation accelerators, proton and heavy ion treatment. The deflection and the extraction of the beam are realized by a diode magnet, and the magnetic field intensity B is perpendicular to the bending plane.
The rotating frame in the proton and heavy ion therapeutic device realizes the deflection and focusing of the particles in multiple directions by controlling and adjusting the movement track of the particles, thereby controlling the particle beam to reach the focus area. The rotating machine frame generally needs to deflect particles at least three times, and one diode magnet can deflect only once, so that the whole machine frame at least needs three diode magnets and is matched with a series of quadrupole magnets with focusing function to realize the control of particle beam tracks, the whole rotating machine frame is heavy and huge and has a weight of more than hundred tons, and domestic and foreign scientists are actively exploring and developing superconducting rotating machine frame technologies along with the demands of miniaturization and light development of the rotating machine frame.
The current accelerator superconducting diode magnet coil structure mainly comprises: the Cos-theta type, commoncoil type, block type and CantedCosinetheta (CCT) type can realize the turning function, but no structure can simultaneously meet the forward and backward bidirectional turning function at present.
Disclosure of Invention
The invention aims to provide a superconducting diode magnet structure capable of realizing forward and backward bidirectional bending at the same time, namely a diode magnet structure with translation and bending functions:
in order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
the utility model provides a have diode magnet structure of translation and turn function concurrently, includes inlayer magnet coil and outer magnet coil to by the inside and outside nested diode magnet that constitutes of inlayer magnet coil and outer magnet coil, inlayer magnet coil includes the oblique spiral pipe coil of two-way bending, outer magnet coil includes the oblique spiral pipe coil opposite with inner coil inclination of two-way bending.
Further, the coil inclination angles of the forward bending and the reverse bending of the inner magnet coil are the same, and the coil track is continuous.
Further, the outer magnet coils and the inner coils are inclined at opposite angles, the coils bent in the forward direction and the coils bent in the reverse direction are inclined at the same angle, and the coil tracks are continuous.
Further, the inner magnet coil coincides with the central axis track of the outer magnet coil.
Further, assuming that x-z is located in a horizontal plane in an xyz coordinate system, the inner magnet coil is formed by winding an oblique spiral coil having a first inclination angle θ with respect to the horizontal plane, the whole coil is first bent in a predetermined direction, that is, in the +x direction, in the horizontal plane, the bending radius is R1, the bending angle is α1, so that a first segment of the inner magnet coil is located in a first segment of an arc corresponding to a first sector, the radius of the first sector is R1, the angle of a second sector is α1, and then bent in a direction opposite to the predetermined x direction, that is, in the-x direction, the bending radius is R2, the bending angle is α2, so that a second segment of the inner magnet coil is located in a second segment of an arc corresponding to a second sector, the radius of the sector is R2, the sector angle is α2, and the first sector and the second sector share a straight line in the x direction as a shared positive and negative side.
Further, the outer layer magnet coil is formed by winding an oblique spiral pipe coil with a second inclination angle which is opposite to the first inclination angle of the inner layer magnet coil and equal to the first inclination angle, the whole coil is bent in the +x direction at first, the bending radius is R1, the bending angle is alpha 1, the first section of the outer layer magnet coil is located in a first section of circular arc corresponding to a first fan, the radius of the first fan is R1, the second fan angle is alpha 1, then the outer layer magnet coil is bent in the opposite direction-x direction, the bending radius is R2, the bending angle is alpha 2, the second section of the outer layer magnet coil is located in a second section of circular arc corresponding to the second fan, the radius of the fan is R2, and the fan angle is alpha 2.
Further, the inner layer magnet coil and the outer layer magnet coil are internally and externally nested to form the diode magnet, the whole magnet coil is firstly bent by alpha 1 degrees along the +x direction with the bending radius of R1, then bent by alpha 2 degrees along the-X direction with the bending radius of R2, and a positive and negative bidirectional bent diode magnet structure is formed, so that the two-time deflection of particles along the positive and negative directions of the X axis is realized, and the movement track of the particles is changed.
Further, by adjusting the bending radii R1, R2, the bending angles α1, α2, and the positions of the magnets, the particles are injected from a first direction in the horizontal plane and then from a second direction in the horizontal plane, thereby realizing the bending and translational transport of the particle beam.
Furthermore, when the two bending radii R1 and R2 are equal and the bending angles alpha 1 and alpha 2 are equal, the particle beam is incident from the horizontal direction, enters the diode magnet and is deflected and then is emitted from the horizontal direction, so that the function of bending and translational transmission of the particle beam is realized through one magnet.
Further, when the bending angles alpha 1 and alpha 2 are unequal in size, the particle beam enters the diode magnet, the two-time deflection function is realized, and when alpha 1 is larger than alpha 2, the particle beam enters the diode magnet, and is bent and ejected in the alpha 1 direction through positive and negative two-time deflection; when alpha 1< alpha 2, the particle beam enters the diode magnet, and is deflected in the positive and negative directions twice to be deflected and emitted in the alpha 2 direction.
Compared with the prior art, the invention has the beneficial effects that:
the two-pole magnet provided by the invention can realize controlling the particles to bend twice along the positive and negative directions, and the twice bending is realized by only one two-pole magnet, so that the number of the magnets is reduced, and the cost of the magnet is reduced; the diode magnet can realize the function of horizontally injecting and ejecting particles and simultaneously translating in the vertical direction, namely has the functions of bending and translating.
Drawings
Fig. 1 is a schematic diagram of the overall structure of a diode magnet according to the present invention.
Fig. 2 is a front view of the whole structure of the diode magnet in the invention.
Fig. 3 is a schematic diagram of an inner coil structure according to the present invention.
Fig. 4 is a schematic diagram of an outer coil structure according to the present invention.
Fig. 5 is a schematic diagram of the central magnetic field of the diode magnet according to the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1, a two-pole magnet structure with both translation and bending functions includes an inner-layer magnet coil 1 and an outer-layer magnet coil 2.
Assuming that x-z is located in a horizontal plane in an xyz coordinate system, the inner magnet coil 1 is formed by winding an oblique spiral coil having a first inclination angle θ with respect to the horizontal plane, the whole coil is firstly bent in a predetermined direction, namely, the +x direction, with a bending radius R1 and a bending angle α1, so that a first section of the inner magnet coil 1 is located in a first arc corresponding to a first sector, with a radius R1 and a second sector angle α1, and then bent in a direction opposite to the predetermined x direction, namely, the-x direction, with a bending radius R2 and a bending angle α2, so that a second section of the inner magnet coil 1 is located in a second arc corresponding to a second sector, with a radius R2 and a sector angle α2, and the first sector and the second sector share a straight line in the x positive and negative directions as a shared edge, as shown in fig. 2. Wherein the first and second circular arcs of the inner magnet coil 1 are continuously curved by smooth transition from the curved angle α1 to the curved angle α2.
The outer magnet coil 2 is formed by winding a spiral bevel coil with a second inclination angle which is opposite to the first inclination angle of the inner magnet coil 1 and equal to the first inclination angle, the whole coil is bent in the +x direction, the bending radius is R1, the bending angle is alpha 1, the first section of the outer magnet coil 2 is positioned on a first section of circular arc corresponding to a first fan, the radius of the first fan is R1, the second fan angle is alpha 1, then the outer magnet coil is bent in the opposite direction-x direction, the bending radius is R2, the bending angle is alpha 2, the second section of the outer magnet coil 2 is positioned on a second section of circular arc corresponding to a second fan, the radius of the fan is R2, and the fan angle is alpha 2. Wherein the first and second arcs of the outer magnet coil 2 are continuously curved by a smooth transition from the angle of curvature α1 to the angle of curvature α2.
As shown in FIG. 2, the whole magnet coil is bent by alpha 1 degrees along the +x direction with the bending radius of R1, and then bent by alpha 2 degrees along the-X direction with the bending radius of R2 to form a positive and negative bidirectional bent diode magnet structure, and the magnet structure can realize the two-time deflection of particles along the positive and negative directions of the X axis to change the movement track of the particles. Fig. 3 is a schematic structural view of the inner coil, and fig. 4 is a schematic structural view of the outer coil.
By adjusting the bending radii R1, R2, the bending angles α1, α2, and the position of the magnets, the particles can be ejected from the first direction 3 in the horizontal plane and then ejected from the second direction 4 in the horizontal plane, thereby realizing the bending and translational transport of the particle beam.
When the two bending radiuses R1 and R2 are equal, and the bending angles alpha 1 and alpha 2 are equal, the particle beam can be incident from the horizontal direction, enters the two-pole magnet and is emitted from the horizontal direction after being deflected, so that the function of bending and translational transmission of the particle beam can be realized through one magnet;
when the bending angles alpha 1 and alpha 2 are unequal in size, the particle beam can enter the diode magnet, and the two-time deflection function is realized. When alpha 1 is larger than alpha 2, the particle beam can enter the diode magnet, and is deflected in the positive and negative directions twice, bent in the alpha 1 direction and emitted; when alpha 1 is smaller than alpha 2, the particle beam can enter the diode magnet, and is deflected in the positive and negative directions twice to be deflected and emitted to the alpha 2 direction;
when the bending radius r1=r2, α1=α2=60 degrees, the magnetic field intensity distribution at the center of the magnet is as shown in fig. 5, the magnetic field intensity at the center of the magnet in the-x direction bending portion and the magnetic field intensity at the center of the +x direction bending portion of the magnet are equal.
The foregoing description is only a preferred embodiment of the present invention, and is not intended to limit the technical scope of the present invention, so any minor modifications, equivalent changes and modifications made to the above embodiments according to the technical principles of the present invention still fall within the scope of the technical solutions of the present invention.
Claims (7)
1. The two-pole magnet structure with the translation and bending functions is characterized by comprising an inner-layer magnet coil and an outer-layer magnet coil, wherein the two-pole magnet is formed by nesting the inner-layer magnet coil and the outer-layer magnet coil inside and outside, the inner-layer magnet coil comprises a two-way bent oblique spiral tube coil, and the outer-layer magnet coil comprises a two-way bent oblique spiral tube coil with an oblique angle opposite to that of the inner coil;
assuming that x-z is located in a horizontal plane in an xyz coordinate system, the inner-layer magnet coil is formed by winding an oblique spiral coil with a first inclination angle theta with the horizontal plane, the whole coil is firstly bent in a preset direction of the horizontal plane, namely, the +x direction, the bending radius is R1, the bending angle is alpha 1, so that a first section of the inner-layer magnet coil is located in a first section of circular arc corresponding to a first fan, the radius of the first fan is R1, the second fan angle is alpha 1, then bending is conducted in the opposite direction of the preset x direction, namely, the-x direction, the bending radius is R2, the bending angle is alpha 2, so that a second section of the inner-layer magnet coil is located in a second section of circular arc corresponding to the second fan, the radius of the fan is R2, the fan angle is alpha 2, and the first fan and the second fan share a straight line in the x positive and negative directions as a shared edge;
the outer layer magnet coil is formed by winding an oblique spiral pipe coil with a second inclination angle which is opposite to the first inclination angle of the inner layer magnet coil and equal to the first inclination angle, the whole coil is bent in the +x direction, the bending radius is R1, the bending angle is alpha 1, the first section of the outer layer magnet coil is positioned on a first section of circular arc corresponding to a first fan, the radius of the first fan is R1, the second fan angle is alpha 1, then the outer layer magnet coil is bent in the opposite direction-x direction, the bending radius is R2, the bending angle is alpha 2, the second section of the outer layer magnet coil is positioned on a second section of circular arc corresponding to the second fan, the radius of the fan is R2, and the fan angle is alpha 2;
the whole magnet coil is bent by alpha 1 degrees along the +x direction with the bending radius of R1, then bent by alpha 2 degrees along the-X direction with the bending radius of R2, so as to form a positive and negative bidirectional bent diode magnet structure, and the two-time deflection of particles along the positive and negative directions of the X axis is realized, so that the movement track of the particles is changed.
2. The diode magnet structure with both translation and bending functions according to claim 1, wherein the coil inclination angles of the forward and reverse bends of the inner magnet coil are the same, and the coil track is continuous.
3. The diode magnet structure with both translation and bending functions of claim 1, wherein the outer layer magnet coils and the inner layer coils are inclined at opposite angles, the coils of the forward and reverse bends are inclined at the same angle, and the coil trajectories are continuous.
4. The two-pole magnet structure with both translation and bending functions of claim 1, wherein the inner magnet coil coincides with the central axis trajectory of the outer magnet coil.
5. The two-pole magnet structure with both translation and bending functions of claim 1, wherein:
by adjusting the bending radii R1, R2, the bending angles α1, α2, and the position of the magnet, the particles are ejected from a first direction in the horizontal plane and then from a second direction in the horizontal plane, and bending and translational transport of the particle beam is achieved.
6. The two-pole magnet structure with both translation and bending functions of claim 1, wherein:
when the two bending radii R1 and R2 are equal, the bending angles alpha 1 and alpha 2 are equal, the particle beam is incident from the horizontal direction, enters the diode magnet and is deflected and then is emitted from the horizontal direction, and therefore the function of bending and translational transmission of the particle beam is realized through one magnet.
7. The two-pole magnet structure with both translation and bending functions of claim 1, wherein:
when the bending angles alpha 1 and alpha 2 are unequal in size, the particle beam enters the diode magnet, the two-time deflection function is realized, and when alpha 1 is larger than alpha 2, the particle beam enters the diode magnet, and is bent and ejected to the alpha 1 direction through positive and negative two-time deflection; when alpha 1< alpha 2, the particle beam enters the diode magnet, and is deflected in the positive and negative directions twice to be deflected and emitted in the alpha 2 direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310217772.XA CN116364381B (en) | 2023-03-08 | 2023-03-08 | Diode magnet structure with translation and bending functions |
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| CN202310217772.XA CN116364381B (en) | 2023-03-08 | 2023-03-08 | Diode magnet structure with translation and bending functions |
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| CN116364381B true CN116364381B (en) | 2023-09-01 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009143370A1 (en) * | 2008-05-22 | 2009-11-26 | Advanced Magnet Lab, Inc. | Coil magnets with constant or variable phase shifts |
| WO2016114989A1 (en) * | 2015-01-12 | 2016-07-21 | The Regents Of The University Of California | Left-right canted-cosine-theta magnets |
| CN108878053A (en) * | 2017-05-12 | 2018-11-23 | 通用电气公司 | Superconductor line component, cryogenic system and the method that superconductor line component is mounted on cryogenic system |
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2023
- 2023-03-08 CN CN202310217772.XA patent/CN116364381B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009143370A1 (en) * | 2008-05-22 | 2009-11-26 | Advanced Magnet Lab, Inc. | Coil magnets with constant or variable phase shifts |
| WO2016114989A1 (en) * | 2015-01-12 | 2016-07-21 | The Regents Of The University Of California | Left-right canted-cosine-theta magnets |
| CN108878053A (en) * | 2017-05-12 | 2018-11-23 | 通用电气公司 | Superconductor line component, cryogenic system and the method that superconductor line component is mounted on cryogenic system |
Non-Patent Citations (1)
| Title |
|---|
| 用于高场加速器磁体的新型高温超导内插线圈概念设计;孔二帅;王呈涛;王琳;王相綦;宁飞鹏;刘旭洋;成达;王莹哲;彭全岭;张展;魏绍清;张震;徐庆金;;低温物理学报(第06期);全文 * |
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