Very high-field short-pulse dipole magnet for compact proton synchrotron

Author

Tokura, S. ; Hirata, A. ; Shouji, K. ; Nakajima, S. ; Miyauchi, Y. ; Noda, A. ; Iwashita, Y. ; Shirai, T. ; Endo, K.

Author_Institution

Ishikawajima-Harima Heavy Ind. Co. Ltd., Yokohama, Japan

Volume

4

fYear

2001

fDate

2001

Firstpage

3117

Abstract

Design of a short-pulse dipole magnet for a compact proton synchrotron dedicated for cancer therapy is presented. Its pulse width and maximum magnetic field are 7 [ms] and 4 [T], respectively. Sextupole coefficient is reduced to 4×10^-4 (32 [T/m²]) at 4 [T] by the optimization of the magnet geometry, which is estimated to be sufficiently small for beam acceleration. Laminated silicon steel ( thickness of 1 [mm]) is enough to suppress the eddy current effect in the yoke and B-constant shape rather than Rogowski´s curve is adopted at the end of the magnet

Keywords

accelerator magnets; cancer; electromagnets; proton accelerators; radiation therapy; synchrotrons; 4 T; 7 ms; beam acceleration; cancer therapy; compact proton synchrotron; sextupole coefficient; very high-field short-pulse dipole magnet; Acceleration; Cancer; Geometry; Magnetic fields; Medical treatment; Particle beams; Protons; Silicon; Space vector pulse width modulation; Synchrotrons;

fLanguage

English

Publisher

ieee

Conference_Titel

Particle Accelerator Conference, 2001. PAC 2001. Proceedings of the 2001

Conference_Location

Chicago, IL

Print_ISBN

0-7803-7191-7

Type

conf

DOI

10.1109/PAC.2001.988023

Filename

988023