Hardware R&D of the KEK/JAERI 50 GeV synchrotron fast extraction kicker magnets

Author

Shirakabe, Y. ; Arakaki, Y. ; Kawakubo, T. ; Mori, Y. ; Murasugi, S. ; Nakamura, E. ; Sakai, I. ; Tomizawa, M.

Author_Institution

KEK High Energy Accelerator Res. Organ., Ibaraki, Japan

Volume

14

Issue

2

fYear

2004

fDate

6/1/2004 12:00:00 AM

Firstpage

425

Lastpage

428

Abstract

The fast extraction kicker magnets of the 50 GeV synchrotron are now in an intensive R&D stage. In the 50 GeV ring, the fast extraction system is designed to deliver the 50 GeV beam to the downstream neutrino oscillation experiment beam line with the Super-Kamiokande detector. At the same time, the fast extraction line is required to function as a beam abort, in case of hardware failure during acceleration of the beam from 3 GeV to 50 GeV. In order to fulfill both demands, the extraction system is designed to accommodate bipolar beam extraction. A new technology to make the bipolar kicker magnet system, using a symmetric Blumlein pulse forming network (SBPFN) system, has been introduced. Its validity is being investigated, both theoretically and experimentally. R&D programs aimed at establishing some of the important technical elements in the fast extraction kicker system are presently in progress. This R&D includes experimental studies of the bipolar kicker principle and the development of IGBT switching modules that satisfy full switching capability of the designed current and voltage.

Keywords

accelerator magnets; beam handling equipment; booster injectors; particle beam extraction; proton accelerators; storage rings; synchrotrons; 50 GeV; IGBT switching modules; KEK/JAERI; SBPFN system; Super-Kamiokande detector; beam abort; beam acceleration; beam line; bipolar beam extraction; bipolar kicker magnet system; downstream neutrino oscillation; fast extraction kicker magnets; symmetric Blumlein pulse forming network; synchrotron; Acceleration; Hardware; Insulated gate bipolar transistors; Neutrino sources; Particle beams; Radio frequency; Research and development; Superconducting magnets; Synchrotrons; Voltage; Beam abort; Blumlein; fast extraction; kicker magnet; pulse forming network;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2004.829687

Filename

1324824