Design, Fabrication and Test of a 1.5 T Cryogen-Free HTS Dipole Magnet for the Heavy Ion Spectrometer

A 1.5 T high-temperature superconducting (HTS) dipole magnet for the heavy ion spectrometer has been fabricated and tested. It mainly consists of four double pancake HTS coils and a warm iron yoke with two cylindrical poles. The gap between the poles is 120 mm. A time projection chamfer (TPC) with t...

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Bibliographic Details
Published in:IEEE transactions on applied superconductivity 2022-09, Vol.32 (6), p.1-5
Main Authors: Chen, Yuquan, Du, Zhuoyue, Wu, Wei, Wu, Beimin, Ou, Xianjin, Yang, Tongjun, Zheng, Shijun
Format: Article
Language:English
Subjects:
Chamfering
Copper
cylindrical pole
Diameters
Dipoles
double pancake coil
Heavy ions
High temperature
High-temperature superconductors
HTS
Iron
Magnetic noise
Magnetic shielding
non-insulation
Pancake coils
Poles
Saturation magnetization
Superconducting magnets
Superferric magnet
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Summary:A 1.5 T high-temperature superconducting (HTS) dipole magnet for the heavy ion spectrometer has been fabricated and tested. It mainly consists of four double pancake HTS coils and a warm iron yoke with two cylindrical poles. The gap between the poles is 120 mm. A time projection chamfer (TPC) with the dimension of 100 mm × 100 mm × 100 mm will be placed in the gap. The four coils wound with a 12 mm wide and 0.28 mm thick HTS tape have an inner diameter of 480 mm. Each of the pancake coils has 176 turns. The coils will be cooled down below 10 K by a GM cryocooler and generate a central field of 1.5 T at an operation current of 280 A. In this paper, the design and construction of the HTS magnet are described and the test results are also reported and discussed.
ISSN:1051-8223
1558-2515
DOI:10.1109/TASC.2022.3154685