Design and Construction of FFAG Magnets for the ERIT System at KURRI

Author

Okabe, Kota ; Uesugi, Tomonori ; Kuriyama, Yasutoshi ; Planche, Thomas ; Lagrange, Jean-Baptiste ; Ishi, Yoshihiro ; Sakai, Izumi ; Mori, Yoshiharu

Author_Institution

Fac. of Eng., Fukui Univ., Fukui, Japan

Volume

20

Issue

3

fYear

2010

fDate

6/1/2010 12:00:00 AM

Firstpage

740

Lastpage

743

Abstract

As an intense neutron source for the boron neutron capture therapy system, a FFAG storage ring with Energy/emittance Recovery Internal Target (ERIT) has been developed in the Kyoto University Research Reactor Institute (KURRI). In order to develop storage ring for ERIT scheme, the spiral sector and radial sector FFAG rings were designed and compared about performance in ERIT system. The 3-dimensional magnetic fields of these magnets were calculated with the field analysis code, TOSCA. The pole shape of magnet was carefully optimized checking the betatron tune. Tunes were computed by means of tracking simulations in field maps based on TOSCA models. In this paper, the FFAG magnet design for ERIT system and the construction of FFAG ring in KURRI are described.

Keywords

accelerator magnets; neutron capture therapy; neutron sources; storage rings; superconducting coils; superconducting magnets; 3D magnetic fields; ERIT system; Energy-Emittance Recovery Internal Target; FFAG magnet construction; FFAG magnet design; FFAG ring radial sector; FFAG ring spiral sector; FFAG storage ring; KURRI; Kyoto University Research Reactor Institute; TOSCA code; boron neutron capture therapy system; intense neutron source; Accelerator; accelerator magnets; medical application;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2010.2042696

Filename

5443638