@article{oai:repo.qst.go.jp:00047602,
 author = {Iwata, Yoshiyuki and Shirai, Toshiyuki and Noda, Koji and 岩田 佳之 and 白井 敏之 and 野田 耕司},
 issue = {4},
 journal = {IEEE Transactions on Applied Superconductivity},
 month = {Jun},
 note = {For widespread use of rotating gantries for carbon
radiotherapy, we designed a new compact gantry. This new
gantry consists of three combined-function superconductingmagnets
having a bending angle of 90 degrees. The dipole field of
the superconducting magnets is set to be Bmax=5.02 Tesla,
corresponding to a bending radius of 1.32 m for transporting
carbon ions having kinetic energy of 430 MeV/u. The
superconducting magnet also has three independent superconducting
quadrupole-coils, which are to be winded inside of the
dipole coil for beam focusing. The dipole and quadrupole coils
are electrically isolated in the magnet, and connected to
independent power supplies, so that each field component can be
independently excited. Having used the combined-function
superconducting magnets, the size of the rotating gantry would
become very compact; the length and radius are 5.1 m and 4.0 m,
respectively. The magnetic field distributions of the superconducting
magnets were calculated with a three-dimensional
electromagnetic field solver, Opera-3d code. With calculated
fields, the superconducting coils were designed, so as to obtain
uniform field distributions. In this paper, the design of this
compact rotating gantry as well as the superconducting magnets
is presented.},
 pages = {1--4},
 title = {Design of superconducting magnets for a compact carbon gantry},
 volume = {26},
 year = {2016}
}