Designing the neutron beamline for high-pressure material science at J-PARC

Arima, Hiroshi; Hattori, Takanori   ; Komatsu, Kazuki*; Abe, Jun; Utsumi, Wataru; Kagi, Hiroyuki*; Suzuki, Akio*; Suzuya, Kentaro; Kamiyama, Takashi; Arai, Masatoshi; Yagi, Takehiko*

A neutron beamline dedicated to high-pressure material science is now being constructed on BL11 at the spallation neutron source of Japan Proton Accelerator Research Complex (J-PARC). The beamline realizes the measurement of diffraction and radiography for powder and liquid, glass samples at high pressures up to 15 GPa and 2000 K. The beamline aims to study crystal structure of hydrogen-bearing materials including hydrous minerals of the Earth's deep interior and structure of magma and light element liquids. In order to achieve our goal, the beamline has two characteristics. One is the installation of a large-sized hydraulic press and the other is using supermirror focusing guides. Here, we report the current design and the performance of the beamline estimated with Monte-Carlo simulation program McStas and PHITS.