Affiliations: Department of Materials Science and Engineering, Muroran Institute of Technology, 27-1 Mizumoto, Muroran 050-8585, Japan | Neutron Science Laboratory (KENS), Institute for Materials Structure Science, High Energy Accelerator Research Organization, Oho, Tsukuba 305-0801, Japan | Center for Proton Accelerator Facility, Japan Atomic Energy Research, Institute (JAERI), Tokai-mura, Naka-gun, Ibaraki 319-1195, Japan
Abstract: In the J-PARC project, we are proposing two powder diffractometers. This article describes these powder diffractometers: a versatile diffractometer with resolution of Δd/d ≈ 0.1% for materials science and a high- resolution diffractometer with Δd/d ≈ 0.03% for precise analysis. Each of them looks at the other side of an off- centered decoupled hydrogen poisoned moderator. Another type of high intensity powder diffractometer is also proposed separately as a total scattering instrument.
