title: Grating spectrometer system for beam emission spectroscopy diagnostics using high-energy negative-ion-based neutral beam injection on LHD.
authors.affiliation: School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan. kado@n.t.u-tokyo.ac.jp
authors.forename: S
authors.initials: S
authors.lastname: Kado
authors.forename: T
authors.initials: T
authors.lastname: Oishi
authors.forename: M
authors.initials: M
authors.lastname: Yoshinuma
authors.forename: K
authors.initials: K
authors.lastname: Ida