Title :
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
fDate :
6/1/2012 12:00:00 AM
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;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
DOI :
10.1109/TASC.2011.2174820
