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A high-temperature superconducting quadrupole magnet structure suitable for particle medical delivery technology

A technology of high-temperature superconducting and quadrupole magnets, which is applied in the direction of superconducting magnets/coils, magnetic objects, accelerators, etc., and can solve the problem of large overall footprint and weight of the transportation system, increased cost, and increased difficulty in magnet design, etc. question

Active Publication Date: 2021-05-25
HEFEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The role of the particle transport system is to ensure the unobstructed transmission of the particle beam in the vacuum pipeline. During the transmission process, a dipole iron is required to deflect the particle beam, and a quadrupole iron is used to focus the particle beam. A complete transport line device consists of The number of dipole irons and quadrupole irons is dozens of sets or more. Since the transport of heavy ions and protons has high requirements on the strength of the magnetic field, the difficulty in designing the magnets during the transport of particle beams will also increase. This is mainly because the magnetic field strength of conventional electromagnets will be seriously saturated after increasing to a certain extent, and the magnetic field strength can only be increased by further increasing the excitation ampere-turns of the coil, but in this magnetic saturation The direct effect of the increase of the coil after the effect is that the size and weight of the magnet itself will increase significantly, which will make the overall footprint and weight of the entire transportation system large, and the cost will also increase significantly

Method used

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  • A high-temperature superconducting quadrupole magnet structure suitable for particle medical delivery technology
  • A high-temperature superconducting quadrupole magnet structure suitable for particle medical delivery technology
  • A high-temperature superconducting quadrupole magnet structure suitable for particle medical delivery technology

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Embodiment 1

[0029] Reference manual attached figure 1 , a high-temperature superconducting quadrupole magnet structure suitable for particle medical transportation technology, characterized in that: the magnet coil adopts YBCO high-temperature superconducting tape 1, wherein the high-temperature superconducting coil is made of YBCO tape 1 embedded in oxygen-free copper In the coil base 2, high-temperature superconducting coil one 3, high-temperature superconducting coil two 4, high-temperature superconducting coil three 5, and high-temperature superconducting coil four 6 are connected in series, connected to the incoming and outgoing current lead 1 7 and current lead 2 8 Above, the coil is cooled by the conduction of the refrigerator 9. The iron core 10 and the coil are also equipped with a cold shield 11 and a Dewar 12 as a vacuum insulation structure. The iron core assembly 10 and the cold shield 11 in the magnet are fixed by the G10 support assembly 13. Conductive coil 1 3, high temper...

Embodiment 2

[0038] see Figure 9 , this embodiment provides a high-temperature superconducting multi-pole magnet structure suitable for particle medical transportation technology, the high-temperature superconducting multi-pole magnet structure specifically includes a Dewar 12, a cold shield 11, an iron core 10, an aluminum foil 24, Oxygen-copper side plate 21, oxygen-free copper end plate 22, cold head 23 and the structure of refrigerator 9, and define the high-temperature superconducting mechanism, supporting components and joint positioning mechanism. Wherein, the foregoing structures all belong to the high-temperature superconducting multi-pole magnet structure suitable for particle medical delivery technology in this embodiment.

[0039] The Dewar 12 is a Dewar shell, which is cylindrical in this embodiment, and in other embodiments, the Dewar 12 may have other cylindrical structures. The Dewar 12 can be placed through the base, and of course can also be fixed through other structur...

Embodiment 3

[0051] see Figure 10 , this embodiment provides a high-temperature superconducting multi-pole magnet structure suitable for particle medical delivery technology, which adds a plurality of springs 29 on the basis of the high-temperature superconducting multi-pole magnet structure in embodiment 2. The plurality of springs 29 correspond to the plurality of G10 supports 13 respectively. One end of the springs 29 is connected to the iron core 10 , and the other end is connected to the corresponding G10 supports 13 . On the one hand, the spring 29 can provide the force of elastic support for the iron core 10 , and on the other hand, it can further reduce the conduction heat leakage of the YBCO high temperature superconducting strip 1 .

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Abstract

The invention discloses a high-temperature superconducting quadrupole magnet structure suitable for particle medical transportation technology, which includes a yttrium-barium-copper-oxygen high-temperature superconducting coil, a low-temperature conduction cooling structure, a coil connection joint design, and vacuum insulation outside the iron core and the coil Structural and epoxy board support assembly. The yttrium barium copper oxide strip is embedded in the groove of the coil base. The high temperature superconducting coils of the magnet are connected in series. The high-temperature superconducting joint is connected by indium sheet compression. The coils are conduction cooled by a cryocooler. The iron core and the coil are also equipped with a cold screen and a Dewar as a vacuum insulation structure. The magnet inner core assembly and cold shield are fixed by epoxy plate support assembly. The invention can realize the focusing function of the particle beam in the particle transport system, and effectively reduce the size, weight and cost of the magnet. The invention satisfies the requirements of low-temperature conduction cooling, structural strength, heat leakage reduction and quench protection when the superconducting coil operates stably in the 40K temperature range, and realizes miniaturization, light weight and low cost of the magnet structure.

Description

technical field [0001] The invention relates to a high-temperature superconducting multipole magnet structure in the technical field of high-temperature superconductivity, in particular to a high-temperature superconducting quadrupole magnet structure suitable for particle medical transportation technology. Background technique [0002] The development of medical technology of particle beams began in 1946 when Wilson in the United States first proposed the therapeutic properties of proton beams; due to its Bragg peak (Bragg peak) effect, the dose value at the end of the range is three times greater than the dose value at the entrance. Four times, the dose after the end of the range is equal to zero. This characteristic of proton beams is used for tumor treatment, which can make the dose at the tumor the maximum and obtain the maximum therapeutic effect, and the normal somatic cells behind the tumor will not be damaged. The normal tissue cells in the front are only slightly d...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05H7/00H01F6/06
CPCH05H7/001H01F6/06H05H2007/007
Inventor 张俊生张午权
Owner HEFEI UNIV OF TECH
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