Indirectly Cooled Radiation-Resistant Magnet With Slanting Saddle Shape Coils for New Secondary Beam Extraction at J-PARC Hadron Facility

Author

Takahashi, H. ; Agari, K. ; Hirose, E. ; Ieiri, M. ; Iio, Masami ; Katoh, Y. ; Minakawa, M. ; Muto, R. ; Naruki, M. ; Noumi, H. ; Sato, Yuuki ; Sawada, S. ; Shirakabe, Y. ; Suzuki, Yuya ; Takasaki, M. ; Tanaka, K.H. ; Toyoda, A. ; Watanabe, Hiromi ; Yaman

Author_Institution

Hadron Beam Line Group, High Energy Accel. Res. Organ. (KEK), Tsukuba, Japan

Volume

22

Issue

3

fYear

2012

fDate

6/1/2012 12:00:00 AM

Firstpage

4101504

Lastpage

4101504

Abstract

We have developed the most upstream dipole magnet K1.1D1 for a new secondary beam line at the hadron experimental hall in J-PARC. It is placed downstream of a production target and is close to the K1.8D1 magnet. Indirectly cooled coils using mineral insulation cables have been adopted for high radiation resistance. The coils have a slanting saddle shape in order to minimize the interference of the magnetic field between the two magnets. It has been operated during the beam time in the autumn of 2010 without any problems.

Keywords

superconducting coils; superconducting magnets; J-PARC hadron facility; K1.1D1 upstream dipole magnet; cooled radiation-resistant magnet; high radiation resistance; interference minimisation; mineral insulation cable; secondary beam extraction; slanting saddle shape coil; Coils; Magnetic field measurement; Magnetic noise; Magnetic shielding; Microwave integrated circuits; Superconducting magnets; Windings; High intensity accelerator; high intensity beam lines; radiation resistant magnet;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2011.2174820

Filename

6070971