Superconducting magnet system of inserted YBCO-Bitter type high-temperature superconducting coil

Abstract

The invention relates to a superconducting magnet system of an inserted YBCO-Bitter type high-temperature coil. The inserted YBCO-Bitter type high-temperature superconducting coil (8) is inserted into an inner hole of a peripheral superconducting coil (10) formed by NbTi and Nb3Sn. The inserted YBCO-Bitter type high-temperature superconducting coil (8) is positioned in a low-temperature container (9); the peripheral superconducting coil (10) is arranged in a low-temperature container (11); and the low-temperature containers (9 and 11) are filled with liquid helium (12). The inserted YBCO-Bitter type high-temperature superconducting coil (8) is formed by superposing of multiple YBCO ring pieces (1) which are embedded in a stainless steel ring (6). High-purity copper ring pieces (2) plated with an aluminum nitride film are arranged between the YBCO ring pieces (1). The multiple YBCO ring pieces (1) and the multiple high-purity copper ring pieces (2) are superposed along the same shaft, are assembled together by a stainless steel central hole tube (3) and an end flange (4), and are cured into a whole body after being soaked by epoxy resin. The superconducting magnet system has simplified structure, little heat leakage of system and stable generated magnetic field.

Description

technical field [0001] The invention relates to a high-magnetic field superconducting magnet system, in particular to a superconducting magnet system for interpolating YBCO-Bitter high-temperature superconducting coils for generating extremely high magnetic fields. Background technique [0002] High magnetic field superconducting magnets are mainly used in industrial and scientific instruments. Usually NbTi and Nb are used 3 The superconducting magnet system combined with Sn material can generate a high magnetic field. When the temperature is 4K, the highest magnetic field can reach 18T. When the operating temperature of the coil is reduced to 2.2K, the magnetic center magnetic field of the magnet can reach 21T. In recent years, due to the high current density of Nb 3 The Sn superconducting wire has been successfully developed. When the operating temperature of the coil is 1.8K, the maximum magnetic field that the superconducting magnet can provide reaches 22.3T. Use high...

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Problems solved by technology

[0003] The purpose of the present invention is to overcome the shortcomings of the existing high-temperature superconducting magnets inserted with high-temperature superconducting coils, such as large low-temperature heat load and poor stability of the magnetic field. The present invention proposes a high-temperature superconducting coil inserted with YBCO-Bitter Superconducting magnet system, the system not only has a high magnetic field, but also has a small thermal load at low temperature and a stable magnetic field

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