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Recent status of a cold neutron disk chopper spectrometer AMATERAS

冷中性子ディスクチョッパー型分光器アマテラスの現状

中島 健次  ; 河村 聖子  ; 菊地 龍弥 ; 川北 至信 ; 稲村 泰弘 ; 梶本 亮一  ; 中村 充孝  ; 曽山 和彦 ; 原田 正英  ; 及川 健一  ; 高田 慎一 ; 田中 浩道; 岩橋 孝明; 神原 理; 山内 康弘; 青山 和弘; 新井 正敏

Nakajima, Kenji; Kawamura, Seiko; Kikuchi, Tatsuya; Kawakita, Yukinobu; Inamura, Yasuhiro; Kajimoto, Ryoichi; Nakamura, Mitsutaka; Soyama, Kazuhiko; Harada, Masahide; Oikawa, Kenichi; Takata, Shinichi; Tanaka, Hiromichi; Iwahashi, Takaaki; Kambara, Wataru; Yamauchi, Yasuhiro; Aoyama, Kazuhiro; Arai, Masatoshi

AMATERAS is a cold-neutron multi disk-chopper spectrometer at Materials and Life Science Experimental Facility (MLF) in J-PARC. By using a pulse shaping chopper and owing to the high peak intensity from a coupled moderator source at MLF, AMATERAS is designed to realize high intensity and fine and flexible energy resolution measurements in quasielastic and inelastic neutron scattering experiments from cold to thermal neutron energy region. In parallel to the user program which has been started from 2009, machine study and commissioning work to improve spectrometer performance have been continuously done. Recently, we have finished refurbishment of the beam transport section. Also, there is progress in background reduction work, development of data analysis method and preparation in sample environments. In this presentation, we will present the current status of AMATERAS including ideas of future upgrade plans.

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