High-temperature superconducting bending magnet structure for superconducting rotating gantry technology

Abstract

The invention discloses a high temperature superconducting bending magnet structure appropriate for a superconducting rotary rack technology. The high temperature superconducting bending magnet structure comprises a YBCO high temperature superconductor of a special structure, an inner coil and an outer coil which are coaxially nested, an outer conductor fixed layer, a conductor insulating layer, a stainless steel support layer, a clamping groove, a double cooling structure, an iron yoke beam magnetic layer and an aluminum shell. According to the high temperature superconducting bending magnet structure, deflection of ion beams in the superconducting rotary rack bending magnet can be realized, and the size, weight and cost of the bending magnet are effectively reduced; moreover, the requirements such as low temperature cooling, structural strength and quenching protection during the operation of the high temperature superconducting magnet can be realized; and a stable high-strength magnetic field can be generated in an iron beam conveying area by using the special YBCO superconductor structure and a winding manner. Finally, the miniaturization, light weight and low cost of the magnet structure are finally realized, and the development of the high temperature superconducting magnet in the medical field of ion beams is promoted.

Description

Technical field [0001] The invention belongs to the field of high-temperature superconductors, and specifically relates to a high-temperature superconducting curved magnet structure suitable for proton and heavy ion medical superconducting rotating frame technology. Background technique [0002] The medical technology development of ion beams started when Wilson in the United States first proposed the therapeutic properties of proton beams in 1946; the proton beam has a Bragg peak, which can be adjusted to the tumor area through high-precision computer control technology and release a lot of energy . After more than half a century of development, proton therapy has become an eye-catching high-tech tumor treatment due to its strong penetrating power, good dose distribution, and low side scatter. Heavy ions are charged particles heavier than protons, such as helium particles Carbon ion Neon ion With the continuous development of proton medical technology, heavy ions are favored...

AI Technical Summary

Problems solved by technology

Since the conventional electromagnetic field is difficult to achieve such a large size, the only way to meet the requirements is to expand the radius of curvature, which makes the existing frame structure bulky and heavy; especially the last piece of bending magnet, whose bending angle reaches 90 degrees, the increase of the radius makes The tonnage is extremely increased, taking the HIT of GSI in Germany as an example, the last piece of 90-degree bending magnet reached 90 tons, accounting for 65% of the entire rotary transmission system

Overweight frame structure will lead to severe uneven force and deformation, which will affect the isocenter error and rotation accuracy, hindering the wide application of ion beam medicine

Images