A combined function magnet for a compact synchrotron

Author

Tadokoro, M. ; Hirota, J.I. ; Hiramoto, K. ; Umezawa, M. ; Kakiuchi, S. ; Iwashita, Y. ; Noda, A. ; Shirai, T. ; Inoue, M.

Author_Institution

Hitachi Ltd., Ibaraki, Japan

Volume

3

fYear

1997

fDate

12-16 May 1997

Firstpage

3294

Abstract

At Kyoto University, a compact proton synchrotron with combined function lattice has been proposed for cancer therapy facility, KUMPF (Kyoto University Medical Proton Facility). KUMPF provides proton beams in the energy range of 70-250 MeV with average current of about 10 nA. The synchrotron consists of six identical combined function magnets, each of which deflects the proton beam 60 degrees. The magnet has an FDF structure where focusing (F) and defocusing (D) sectors deflect the beam 15 and 30 degrees, respectively. In order to realize the tune value of (1.75, 1.75), n-values of -5.856 and 6.164 are required for F and D sectors, respectively. In the present paper, the detailed design of the combined function magnet will be presented

Keywords

accelerator magnets; cancer; electromagnets; proton accelerators; proton beams; radiation therapy; synchrotrons; 10 nA; 70 to 250 MeV; FDF structure; KUMPF; cancer therapy facility; combined function magnet; compact proton synchrotron; proton beams; Humans; Lattices; Magnetic resonance; Magnetic separation; Medical treatment; Particle beams; Protons; Radio frequency; Structural beams; Synchrotrons;

fLanguage

English

Publisher

ieee

Conference_Titel

Particle Accelerator Conference, 1997. Proceedings of the 1997

Conference_Location

Vancouver, BC

Print_ISBN

0-7803-4376-X

Type

conf

DOI

10.1109/PAC.1997.753186

Filename

753186