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Current status of an extreme environment single crystal neutron diffractometer SENJU at J-PARC

J-PARCにおける特殊環境単結晶中性子回折計SENJUの最新状況

大原 高志   ; 鬼柳 亮嗣  ; 金子 耕士   ; 田村 格良  ; 中尾 朗子*; 花島 隆泰*; 宗像 孝司*; 茂吉 武人*; 黒田 哲也*; 及川 健一   ; 川崎 卓郎   ; 山内 康弘; 河村 聖子   

Ohara, Takashi; Kiyanagi, Ryoji; Kaneko, Koji; Tamura, Itaru; Nakao, Akiko*; Hanashima, Takayasu*; Munakata, Koji*; Moyoshi, Taketo*; Kuroda, Tetsuya*; Oikawa, Kenichi; Kawasaki, Takuro; Yamauchi, Yasuhiro; Kawamura, Seiko

SENJU, a TOF-Laue single crystal neutron diffractometer at the BL18 of MLF/J-PARC, was designed for precise crystal and magnetic structure analyses under multiple extreme environments such as low-temperature, high-pressure and high-magnetic field, and also capable of taking diffraction measurements of small single crystals, less than 1.0 mm$$^{3}$$ in volume. Just after the launch of SENJU in March 2012, we newly installed and/or upgraded some sample environment devices. SENJU has a vacuum sample chamber and 37 two-dimensional scintillation detectors. Wavelength of incident neutron is 0.3 - 4.4 A; for the 1st frame and 4.6 - 8.8 A; for the 2nd frame. As sample environment devices, 4 K cryostat with 2-axes goniometer, longitudinal magnet, high-pressure cell, high temperature furnace and other devices are available or in commissioning. In this presentation, we will show the current status of sample environment devices for SENJU such as cryostat, magnet and other devices.

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