@misc{oai:repo.qst.go.jp:00084418,
 author = {Kota, Mizushima and Ye, Yang and Tetsuya, Fujimoto and Yoshiyuki, Iwata and Shunya, Matsuba and Yasushi, Abe and Etsuo, Noda and Masami, Urata and Toshiyuki, Shirai and Tomofumi, Orikasa and Shigeki, Takayama and Saki, Amano and Kosuke, Nakanishi and Yutaka, Hirata and Kota, Mizushima and Ye, Yang and Yoshiyuki, Iwata and Shunya, Matsuba and Yasushi, Abe and Etsuo, Noda and Masami, Urata and Toshiyuki, Shirai},
 month = {Nov},
 note = {A project to develop a compact heavy ion therapy device has been initiated at the National Institutes for Quantum and Radiological Science and Technology . The therapy device uses a 430 MeV/u synchrotron with superconducting bending magnets as a main accelerator. In order to reach the required output of the heavy ion beam, the bending magnets have been designed to be operate d
alternately from 0.3 T (for to 3.5 T maximum (for extraction) at the ramping rate of 0.6 T/s. The 3D electromagnetic design of the synchrotron bending magnet has been performed. The magnetic length is 1.49 m for 45 degree bending angle, and curvature radius is 1.89 m. The superconducting coil consists of a low loss NbTi wire with a 1 mm diameter , and t he maximum operating current is 265A. To suppress the magnetomotive force, t he cross sectional coil design
adopt ed an elliptical shaped arrangement. The coil and iron yoke designs were optimized for the uniformity of the magnetic field in the required area In addition, a short straight model with a magnetic length of 400 mm w as fabricated for the feasibility demonstration. The results of the excitation test as well as the electromagnetic design will be reported., 27th International Conference on Magnet Technology},
 title = {Electromagnetic design of the superconducting magnet for a compact heavy-ion synchrotron},
 year = {2021}
}