J-PARCニュートリノビームライン超伝導磁石システム

抄録

A superconducting magnet system for the J-PARC neutrino beam line had been under construction since 2004. The system consists of 14 doublet cryostats; each contains 2 combined function magnets (SCFM). The SCFM uses two single layer left/right asymmetric coils that produce a dipole field of 2.6 T and quadrupole of 19 T/m. The SCFMs had been developed by 2004, mass-produced since 2005, and completed by summer 2008. The system has been installed since Feb. 2008 till the end of 2008. The commissioning of the system has been carried out in Jan. to Mar. 2009. The paper summarizes the magnet development and system overview including cryogenics. The paper also reports the production, installation and commissioning status.