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CN-122025336-A - Novel 25T magnetic confinement is high-temperature superconductive D type mixed magnet structure for fusion

CN122025336ACN 122025336 ACN122025336 ACN 122025336ACN-122025336-A

Abstract

The invention provides a novel high-temperature superconductive D-type hybrid magnet structure for 25T magnetic confinement fusion, which comprises a TFMC coil and TMMC coils, wherein the TFMC coil comprises a middle pancake coil A and two side pancake coils B. The middle pancake coil A is formed by stacking a multi-pancake coil framework and a high-temperature superconducting tape, the high-temperature superconducting tape is spirally wound in a groove of the coil framework, the pancake coils B on two sides are formed by spirally winding and stacking the multi-pancake high-temperature superconducting tape and are placed close to the upper surface and the lower surface of the middle pancake coil A, the TMMC coil comprises a stainless steel pipe sleeve, the high-temperature superconducting tape and a copper conductor, and the TMMC coil is concentric with the TFMC coil and is positioned on the outer ring of the TFMC coil. The TFMC coil and the TMMC coil are jointly electrified with current in the same direction, so that a stable and uniform high-strength magnetic field can be generated at the center of the superconducting magnet, and reliable restraint on plasma lifting is realized.

Inventors

  • ZHENG JINXING
  • Li Guoruixing
  • LIU XUFENG
  • ZHAO BIN
  • LI MING
  • LU CHUANG
  • QIAN ZIHAN
  • YANG YUHAN

Assignees

  • 中国科学院合肥物质科学研究院

Dates

Publication Date
20260512
Application Date
20260209

Claims (10)

  1. 1.A novel 25T magnetic confinement fusion high-temperature superconducting D-type mixed magnet structure is characterized in that the novel 25T high-temperature superconducting D-type mixed magnet comprises a TFMC coil and TMMC coils, the TFMC coil comprises a middle cake-type coil A, a high-temperature superconducting tape and two side cake-type coils B, the middle cake-type coil A is formed by stacking a multi-cake-type coil framework and the high-temperature superconducting tape, the high-temperature superconducting tape is spirally wound in a groove of the coil framework, the two side cake-type coils B are tightly attached to the upper surface and the lower surface of the middle cake-type coil A, and the TMMC coils are concentric with the TFMC coil and are located on the outer ring of the TFMC coil.
  2. 2. The novel 25T magnetic confinement fusion high-temperature superconducting D type mixed magnet structure of claim 1, wherein the intermediate pancake coil A is formed by parallelly connecting a plurality of pancake high-temperature superconducting tapes, penetrating from an inner ring of a coil framework, penetrating from a spiral groove to an outer ring, and stacking the coil framework by using epoxy resin for impregnation and solidification in the spiral groove.
  3. 3. The novel 25T magneto-restrictive fusion high-temperature superconducting D type mixed magnet structure according to claim 2, wherein high-intensity current can be introduced into the intermediate pancake coil A.
  4. 4. The novel 25T magnetic confinement fusion high temperature superconducting D type mixed magnet structure according to claim 1, wherein the cake type coils B on two sides are formed by spirally winding a plurality of cake type high temperature superconducting tapes in parallel and stacking the same.
  5. 5. The novel 25T magneto-restrictive fusion high-temperature superconducting D type mixed magnet structure according to claim 4, wherein high-intensity current can be introduced into the cake-type coils B at two sides.
  6. 6. The novel 25T magnetic confinement fusion high-temperature superconducting D type mixed magnet structure according to claim 1, wherein the TMMC coil is composed of an inner layer and an outer layer of the same structure with different sizes.
  7. 7. A novel 25T magnetic confinement fusion high-temperature superconducting D-type mixed magnet structure is characterized in that a groove is formed in a copper conductor and is inserted into a stainless steel pipe sleeve, high-temperature superconducting strips are inserted into the groove of the copper conductor after being connected in parallel, an inner layer structure is manufactured by inserting the copper conductor into a gap after being immersed and solidified by epoxy resin, an outer layer structure is manufactured according to the mode, the inner layer structure is penetrated into the outer layer structure, and finally the whole diameter-reduced armor is formed.
  8. 8. The novel 25T magneto-restrictive fusion high-temperature superconducting D type hybrid magnet structure according to claim 1, wherein the TFMC coil and the TMMC coil are jointly supplied with current in the same direction and are used for generating a stable and uniform high-strength magnetic field in the center of the superconducting magnet.
  9. 9. The novel 25T magnetic confinement fusion high temperature superconducting D type hybrid magnet structure of claim 1, wherein the two side pancake coils B are formed by spirally winding and stacking a plurality of pancake high temperature superconducting tapes.
  10. 10. The novel 25T magnetic confinement fusion high temperature superconducting D type mixed magnet structure according to claim 8, wherein the TMMC coil comprises a stainless steel tube sleeve, a superconducting tape and a copper conductor.

Description

Novel 25T magnetic confinement is high-temperature superconductive D type mixed magnet structure for fusion Technical Field The invention relates to the technical field of high-temperature superconducting magnets, in particular to a novel 25T magnetic confinement fusion high-temperature superconducting D-type mixed magnet structure. Background The superconducting magnet is an electromagnet device which constructs a strong magnetic field by utilizing the zero resistance characteristic of a superconducting material at a low temperature, and the superconducting magnet is a strong magnetic field device which realizes the zero resistance characteristic at a relatively high temperature. The high-temperature superconducting magnet can generate magnetic field intensity far exceeding that of the traditional superconducting magnet, and the stability and uniformity of the generated magnetic field are greatly superior to those of the traditional superconducting magnet. This property has led to widespread use of superconducting magnets in a number of critical areas. In the field of high-energy physics research, a particle accelerator precisely controls the motion track of charged particles by depending on a high-temperature superconducting magnet, in the field of energy exploration, a thermonuclear fusion experimental reactor utilizes the high-temperature superconducting magnet to restrict high-temperature plasma, and in the field of medical diagnosis, nuclear magnetic resonance imaging equipment realizes high-resolution imaging of the internal tissue structure of a human body by means of a strong magnetic field generated by the high-temperature superconducting magnet. High temperature superconducting magnets are typically wound into a D-type coil structure using high temperature superconducting tape and stacked. After the high-temperature superconducting tape is cooled to enter a low-temperature superconducting state, high-density current is introduced into the coil, and at the moment, the current can continuously and stably flow in a loop based on the zero resistance characteristic of the superconducting material, so that the high-temperature superconducting magnet generates a stable and uniform strong magnetic field. The core technology of nuclear fusion reaction is to make isotope deuterium and tritium of hydrogen undergo fusion at extremely high temperature, releasing huge energy. However, to achieve controlled fusion, the primary challenge is to confine these species in a high temperature plasma state. Because the plasma temperature is as high as tens of millions or even hundreds of millions of degrees celsius during the nuclear fusion reaction, any conventional material cannot withstand such high temperatures. At this time, the magnetic field generated by the superconducting magnet becomes a key means for confining the plasma, and the magnitude of the magnetic field strength directly determines the confining effect of the high-performance plasma. The magnetic field generated by the high-temperature superconductive D-shaped coil in the magnetic confinement controllable nuclear fusion device is mainly used for confining the high-temperature plasma. In order to ensure that the nuclear fusion reaction can be performed stably and efficiently, the maximum magnetic field and the central magnetic field generated by the D-shaped coil must strictly meet the design requirements in terms of strength, stability, uniformity and the like. Only then can a reliable 'magnetic cage' be formed, high-temperature plasma is stably confined in a specific area, and is prevented from contacting with the wall of the device, so that the nuclear fusion reaction is ensured to continuously proceed. However, it is difficult and complicated to generate such strong and uniform magnetic fields in the superconducting magnet of the prior art. Disclosure of Invention In order to solve the problems, the invention provides a novel high-temperature superconducting D-type hybrid magnet structure for 25T magnetic confinement fusion, which can generate a strong, stable and uniform magnetic field in the center of a magnet to realize reliable confinement of plasma. The invention provides a novel high-temperature superconductive D-type mixed magnet structure for 25T magnetic confinement fusion, which can generate a strong, stable and uniform magnetic field in the center of a magnet to realize reliable confinement of plasma. The novel 25T high-temperature superconducting D-type coil comprises a TFMC coil and TMMC coils, wherein the TFMC coil comprises a middle pancake coil A and two side pancake coils B. The intermediate pancake coil A is formed by stacking a multi-pancake coil framework and a high-temperature superconducting tape, the high-temperature superconducting tape is spirally wound in a groove of the coil framework, the pancake coils B on two sides are formed by spirally winding and stacking the multi-pancake high-temperature superconducting tape and