title: Wide dynamic range neutron flux monitor having fast time response for the Large Helical Device.
abstract: A fast time response, wide dynamic range neutron flux monitor has been developed toward the LHD deuterium operation by using leading-edge signal processing technologies providing maximum counting rate up to ∼5 × 10(9) counts/s. Because a maximum total neutron emission rate over 1 × 10(16) n/s is predicted in neutral beam-heated LHD plasmas, fast response and wide dynamic range capabilities of the system are essential. Preliminary tests have demonstrated successful performance as a wide dynamic range monitor along the design.
authors.affiliation: National Institute for Fusion Science, Toki 509-5292, Japan.
authors.forename: M
authors.initials: M
authors.lastname: Isobe
authors.affiliation: National Institute for Fusion Science, Toki 509-5292, Japan.
authors.forename: K
authors.initials: K
authors.lastname: Ogawa
authors.affiliation: National Institute for Fusion Science, Toki 509-5292, Japan.
authors.forename: H
authors.initials: H
authors.lastname: Miyake
authors.affiliation: National Institute for Fusion Science, Toki 509-5292, Japan.
authors.forename: H
authors.initials: H
authors.lastname: Hayashi
authors.affiliation: National Institute for Fusion Science, Toki 509-5292, Japan.
authors.forename: T
authors.initials: T
authors.lastname: Kobuchi
authors.affiliation: Department of Materials, Physics and Energy Engineering, Nagoya University, Nagoya 464-8603, Japan.
authors.forename: Y
authors.initials: Y
authors.lastname: Nakano
authors.affiliation: Department of Materials, Physics and Energy Engineering, Nagoya University, Nagoya 464-8603, Japan.
authors.forename: K
authors.initials: K
authors.lastname: Watanabe
authors.affiliation: Department of Materials, Physics and Energy Engineering, Nagoya University, Nagoya 464-8603, Japan.
authors.forename: A
authors.initials: A
authors.lastname: Uritani
authors.affiliation: Kyoto University Research Reactor Institute, Kumatori 590-0494, Japan.
authors.forename: T
authors.initials: T
authors.lastname: Misawa
authors.affiliation: Japan Atomic Energy Agency, Rokkasho 039-3212, Japan.
authors.forename: T
authors.initials: T
authors.lastname: Nishitani
authors.affiliation: Toshiba Corporation, Fuchu 183-8511, Japan.
authors.forename: M
authors.initials: M
authors.lastname: Tomitaka
authors.affiliation: Toshiba Corporation, Fuchu 183-8511, Japan.
authors.forename: T
authors.initials: T
authors.lastname: Kumagai
authors.affiliation: Toshiba Corporation, Fuchu 183-8511, Japan.
authors.forename: Y
authors.initials: Y
authors.lastname: Mashiyama
authors.affiliation: Toshiba Corporation, Fuchu 183-8511, Japan.
authors.forename: D
authors.initials: D
authors.lastname: Ito
authors.affiliation: Toshiba Corporation, Fuchu 183-8511, Japan.
authors.forename: S
authors.initials: S
authors.lastname: Kono
authors.affiliation: Toshiba Nuclear Engineering Services Corporation, Yokohama 235-8523, Japan.
authors.forename: M
authors.initials: M
authors.lastname: Yamauchi
authors.affiliation: National Institute for Fusion Science, Toki 509-5292, Japan.
authors.forename: Y
authors.initials: Y
authors.lastname: Takeiri