@article{oai:repo.qst.go.jp:00085844,
 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 Orikasa, Tomofumi and Takayama, Shigeki and Amano, Saki and Nakanishi, Kosuke and Hirata, Yutaka and 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},
 journal = {IEEE Transactions on Applied Superconductivity},
 month = {Apr},
 note = {A compact synchrotron is now under development at the Nation-al Institutes for Quantum Science and Technology (QST), with the goal of downsizing the heavy-ion therapy system with super-conducting magnets conduction-cooled by GM cryocoolers. The synchrotron is required to accelerate several kinds of heavy-ion beams from 4 MeV/u to 430 MeV/u. A superconducting magnet with both dipole and quadrupole coils is adopted to generate a dipole field from 0.3 to 3.5 T and a quadrupole field from 0.1 to 1.5 T/m with a ramp rate of 0.6 T/s. A coil winding pattern and iron yoke are optimized to achieve field homogeneity in the re-quired area. For the small-scale synchrotron, the coil ends are op-timized with a novel parameter combining the beta function and multipole errors considering the beam dynamics.},
 title = {Concept design of a superconducting magnet  for a compact heavy-ion synchrotron},
 year = {2022}
}