Development of a Cyclotron Magnet

作者：Yao, Q. G.^*; Zhou, L. C.; Yu, H. Y.; Pei, C. P.; Zhao, L. X.; Han, S. F.; Zhang, J. Q.; Wang, B.; Zhang, X. Y.; Ma, L. Z.; Yuan, P.

来源：IEEE Transactions on Applied Superconductivity, 2016, 26(4): 4403004.

DOI：10.1109/TASC.2016.2536746

• Isochronous magnetic field
• magnetic field measurement
• magnetic field optimization
• sector shape

We developed a cyclotron magnet at the Institute of Modern Physics, Chinese Academy of Sciences (IMP, CAS); the whole system include one main magnet, one solenoid, and two quadrupoles, and is used to accelerate the H-beam. This paper describes the magnetic field design of one cyclotron, and several shimming methods are used to meet the isochronous magnetic field of the H-beam, including the pole face shimming method and side shimming method. The final optimization results show that the error between simulation and theory value is small. For the purpose of comparison, a detail magnetic field measurement on the cyclotron are carried out, the results show that the isochronous deviations between the measurements and theory values are less than 5 G at most radii, which satisfy the design requirement.

• 出版日期2016-6
• 单位中国科学院近代物理研究所