AMATERAS: A Cold-neutron disk chopper spectrometer; Current status and recent outcomes

Nakajima, Kenji  ; Kawamura, Seiko   ; Kofu, Maiko   ; Murai, Naoki  ; Inamura, Yasuhiro  ; Kikuchi, Tatsuya*  ; Wakai, Daisuke*

AMATERAS is one of the first generation disk-chopper spectrometers with pulse-shaping operation as with CNCS at SNS and LET at ISIS, and it is designed to carry out inelastic and quasielastic neutron scattering experiments in the range from cold to sub-thermal neutron energy with high intensity and fine and flexible energy resolution. AMATERAS started its operation from May 2009 and was opened for the user program from December 2009. Up to now, experiments of more than 160 proposals have been carried out, which resulted in more than 50 papers, 15 theses and 11 press releases. Also, AMATERAS took part in the social activities of MLF, for example, hands-on-experiments at AONSA Neutron Schools. Along with performing a user program, we are continually maintaining and improving the performance of the spectrometer. In this presentation, we will show the over view and current status of AMATERAS and recent scientific highlights obtained from experiments by using AMATERAS.