Masaaki Matsuda is the lead instrument scientist for the polarized triple axis spectrometer PTAX (HB-1) at the High Flux Isotope Reactor. He obtained his B.Sc., M.Sc., and Ph. D. degrees from Tohoku University in Japan. He was a postdoctoral fellow at JSPS, a researcher at RIKEN, a researcher, a senior researcher, a principal researcher at Japan Atomic Energy Research Institute/Japan Atomic Energy Agency, and a senior R&D staff at Oak Ridge National Laboratory. Since 2021 he has been a distinguished R&D staff at Oak Ridge National Laboratory. He has been working on magnetism in strongly correlated electron systems, such as high-Tc cuprates, quantum spin systems and frustrated magnets, using neutron scattering technique. He is a Fellow of the American Physical Society.