@techreport{oai:nifs-repository.repo.nii.ac.jp:00010264,
 author = {Takahata,  K. and Yanagi,  N. and Mito,  T. and Yamamoto,  J. and Motojima,  O. and Nakamoto,  K. and Mizukami,  S. and Kitamura,  K. and Wachi,  Y. and Shinohara,  H. and Yamamoto,  K. and Shibui,  M. and Uchida,  T. and LHD, Design Group and Nakayama,  K.},
 month = {Apr},
 note = {As research and development of helical field coil and poloidal field coil for Large Helical Device (LHD), two forced-flow cooled NbTi superconducting coils (TOKI-TF, PF) have been designed and fabricated. The helical coil (TOKI-TF) is a 1/4 scale model of LHD. It has the major radius of 0.9 m, the minor radius of 0.25 m and pitch number of 4. Nominal current and maximum field were designed to be 8 kA and 2.8 T, respectively. Another coil (TOKI-PF) was fabricated for the demonstration of LHD poloidal field coils. It consists of two double-pancakes with the inner radius of 0.6 m and the outer radius of 0.82 m. Nominal current of 25 kA simulates that of LHD poloidal field coils. Cable-in-conduit type conductors were used for the both coils. The test facility was also constructed with a vacuum vessel, Iiquid nitrogen shield, 30 kA power leads, a heat exchanger, cryogenic supports and others. In this paper, design concepts and details will be presented.},
 title = {Design and Fabrication of Forced-Flow Coils as R&D Program for Large Helical Device},
 year = {1991}
}