Goal and the current state of high-pressure neutron diffractometor PLANET at J-PARC

Hattori, Takanori   ; Arima, Hiroshi; Katayama, Yoshinori; Utsumi, Wataru; Nagai, Takaya*; Inoue, Toru*; Kagi, Hiroyuki*; Yagi, Takehiko*

The high-pressure neutron diffractometer PLANET is the new neutron beamline dedicated to the high-pressure studies. The main purpose is to reveal the effect of the hydrogen and water on the materials dynamics in the Earth. The most characteristic feature is to possess the huge high-pressure press with a maximum load of 1500 ton, which can simultaneously generate pressures and temperatures of 20 GPa and 2000K, respectively. The coupling this with the diffraction and imaging technique enables us to observed states of the materials and minerals at conditions relevant to Earth's upper mantle. In this paper, the details of the design are introduced.