title: Progress in development of the neutron profile monitor for the large helical device.
abstract: The neutron profile monitor stably operated at a high-count-rate for deuterium operations in the Large Helical Device has been developed to enhance the research on the fast-ion confinement. It is composed of a multichannel collimator, scintillation-detectors, and a field programmable gate array circuit. The entire neutron detector system was tested using an accelerator-based neutron generator. This system stably acquires the pulse data without any data loss at high-count-rate conditions up to 8 × 10(5) counts per second.
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: M
authors.initials: M
authors.lastname: Isobe
authors.affiliation: National Institute of Technology, Toyama College, 13 Hongo-machi, Toyama 939-8630, Japan.
authors.forename: E
authors.initials: E
authors.lastname: Takada
authors.affiliation: National Institute of Technology, Toyama College, 13 Hongo-machi, Toyama 939-8630, Japan.
authors.forename: Y
authors.initials: Y
authors.lastname: Uchida
authors.affiliation: Fusion Research and Development Directorate, Japan Atomic Energy Agency, Tokai, Naka, Ibaraki 319-1195, Japan.
authors.forename: K
authors.initials: K
authors.lastname: Ochiai
authors.affiliation: Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan.
authors.forename: H
authors.initials: H
authors.lastname: Tomita
authors.affiliation: Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan.
authors.forename: A
authors.initials: A
authors.lastname: Uritani
authors.affiliation: National Institute for Fusion Science, Toki 509-5292, Japan.
authors.forename: T
authors.initials: T
authors.lastname: Kobuchi
authors.affiliation: National Institute for Fusion Science, Toki 509-5292, Japan.
authors.forename: Y
authors.initials: Y
authors.lastname: Takeiri