期刊
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
卷 32, 期 6, 页码 -出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TASC.2022.3175454
关键词
Coils; Iron; Cyclotrons; Magnetic shielding; Magnetic noise; Magnetic moments; High-temperature superconductors; Cyclotron accelerator; iron shield; model order reduction; optimal design; REBCO magnet
资金
- JSPS
- Ministry of Education, Science, Sports, and Culture [18H05244]
This paper presents the development of a cyclotron accelerator for medical radioisotope production, highlighting its features, the use of rare-earth barium copper oxide tapes for coil winding, and the optimization design method used. The compactness, light weight, and multi energy outputs of the developed cyclotron system make it suitable for medical use.
We have been developing a cyclotron accelerator for radioisotope production of medical use. The features of developed cyclotron system are compactness, light weight, and multi energy outputs. To achieve such features, coils are wound with rare-earth barium copper oxide (REBCO) tapes and the magnet has no iron core to generate an azimuthal varying field (AVF). To install the developed cyclotron accelerator into hospitals, an iron shield is needed for protection of leakage radiation and magnetic field. In this paper, to optimally design main coils with iron shield, a fast field computation method called Model Order Reduction (MOR) is adopted. Using MOR technique, the field computation is accelerated similar to 50 times. The error of MOR field computation is sufficiently small. Hence, the MOR is effective in the optimal configuration design of coils with iron shield. The optimized configuration of a miniaturized cyclotron accelerator magnet is also shown.
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