Stress Study for Conduction Cooling Superconducting Magnet for Medical Cyclotron SC240

Autor:	Yanfang Bi, Rui Hu, Yuntao Song, Kaizhong Ding, Shuangsong Du, Chen Yonghua, Chunlong Zou, Changle Feng, Hansheng Feng
Rok vydání:	2021
Předmět:	Materials science Nuclear engineering Cyclotron Superconducting magnet Condensed Matter Physics Electronic Optical and Magnetic Materials Magnetic field law.invention Stress (mechanics) law Electromagnetic coil Cylinder stress Electrical and Electronic Engineering Radial stress Electrical conductor
Zdroj:	IEEE Transactions on Applied Superconductivity. 31:1-4
ISSN:	2378-7074 1051-8223
Popis:	A high stress superconducting magnet for the 200MeV superconducting isochronous cyclotron has been constructed and operated to supply 3.6 T extraction magnetic field for proton therapy by CIM Inc. Based those experiences, A 240MeV superconducting isochronous cyclotron (so call SC240) for proton therapy is under development by CIM (F. Jiang et al. , 2019). A superconducting magnet including 2 symmetry up/down split coils would be used to supply the 3.0 T isochronous extraction magnetic fields. The NbTi/Cu WIC conductor is selected to fabricate the superconducting coil. In this paper, the radial stress, hoop stress and displacement of the coil are investigated under different winding tension, cool down and Lorentz forces. Hoop stress is the most key point, the results are shown not more than 60 MPa, which meets the 80 MPa allowable requirement. Optimizing the coil stress design of SC240 can supply sufficient safety margin about lower 50% for hoop stress compared with SC200, which will minimize the risk of training times or avoid premature quench.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::acbf948fd4c3e737093f730d653c7d81 https://doi.org/10.1109/tasc.2021.3076404 Zobrazit plný text záznamu