A New time-of-flight single crystal diffractometer SENJU at J-PARC

Oikawa, Kenichi   ; Ohara, Takashi*   ; Kiyanagi, Ryoji  ; Kawasaki, Takuro   ; Tamura, Itaru  ; Kaneko, Koji   ; Nakamura, Tatsuya  ; Sakasai, Kaoru  ; Nakao, Akiko*; Hanashima, Takayasu*; Munakata, Koji*; Kimura, Hiroyuki*; Noda, Yukio*; Takahashi, Miwako*; Kiyotani, Tamiko*; Sakakura, Terutoshi*; Arai, Masatoshi; Oshima, Kenichi*

SENJU, named after the thousand armed Goddess of Mercy, is a single crystal time-of-flight Laue diffractometer proposed to the MLF at J-PARC. The diffractometer is dedicated for precise crystal and magnetic structure analyses under the combined extreme conditions using a small sample less than 1 . TOF-Laue technique coupled with wide area 2D detectors enables the efficient measurements and improves the completeness of the data. A WLSF-type scintillator detector developed for iBIX was modified to meet the requirements of SENJU. Although the construction schedule has been delayed because of the earthquake, on-beam commissioning will start in 2012.