Performance evaluation of cold-neutron disk-chopper spectrometer AMATERAS

Nakajima, Kenji  ; Kawamura, Seiko   ; Nakamura, Mitsutaka   ; Kajimoto, Ryoichi  ; Inamura, Yasuhiro; Takahashi, Nobuaki; Osakabe, Toyotaka  ; Wakimoto, Shuichi  ; Aizawa, Kazuya  ; Suzuya, Kentaro; Shibata, Kaoru  ; Nakatani, Takeshi ; Soyama, Kazuhiko  ; Yoshida, Noboru; Tanaka, Hiromichi; Metoki, Naoto   ; Sato, Taku*; Kakurai, Kazuhisa; Matsuda, Masaaki; Iwahashi, Takaaki; Kambara, Wataru; Ito, Yukihiro; Maekawa, Fujio  ; Oikawa, Kenichi   ; Harada, Masahide   ; Lechner, R. E.*; Mezei, F.*; Arai, Masatoshi

AMATERAS is a cold-neutron disk-chopper spectrometer newly installed at MLF, J-PARC. The spectrometer has pulse shaping chopper which can cat the source pulse shape as it is required by the experiments. By using newly developed high-speed disk-choppers, the spectrometer realizes both high energy resolution and high intensity with high flexibility in the cold and thermal neutron energy region. The construction of the spectrometer has been completed in spring of 2009. After the commissioning works, now the spectrometer is open to users. In this presentation, we will show the evaluated performances which were obtained in commissioning works.