Author: Nakajima, S.
Paper Title Page
TUPMB034 Design and Manufacture of a Superconducting Solenoid for D-Line of J-PARC Muon Facility 1177
  • T. Semba, Y. Hagiwara, S. Kido, S. Nakajima, Y. Tanaka
    Hitachi Ltd., Ibaraki-ken, Japan
  • N. Kawamura, Y. Makida, Y. Miyake, H. Ohhata, K. Sasaki, K. Shimomura
    KEK, Tokai, Ibaraki, Japan
  • N. Kurosawa
    KEK, Tokai Branch, Tokai, Naka, Ibaraki, Japan
  • Y. Murata
    Hitachi, Ltd., Energy and Environmental System Laboratory, Hitachi-shi, Japan
  • P. Strasser
    High Energy Accelerator Research Organization (KEK), Institute of Materials Structure Science (IMSS), Ibaraki, Japan
  A superconducting solenoid for J-PARC muon facility was newly designed and manufactured. High Energy Accelerator Research Organization (KEK) has been operating the J-PARC Muon Science Establishment (MUSE) since 2008. Among its four muon beam lines, the decay muon line (D-Line) has been extracting and providing surface muons and positive decay muons up to a momentum of 50 MeV/c for various users, utilizing a superconducting solenoid. The D-Line as well as the other J-PARC facility suffered severe damages from the earthquake on March 11, 2011. It necessitated rebuilding of the damaged superconducting solenoid. New design parameter of the solenoid is as follows: length of solenoid: 6 m, diameter of warm bore: 0.2 m, magnetic field of bore center: 3.5 T, rated current: 415 A, superconducting wire: NbTi/Cu, quench protection: quench back heaters. The six-meter-long solenoid consists of twelve pieces of 0.5-meter-long superconducting coils. The entire solenoid is forced-indirectly cooled by supercritical helium flow. This report describes the design and manufacturing process of the newly built superconducting solenoid for D-Line of J-PARC muon facility.  
DOI • reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-TUPMB034  
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