Katsuta Tadahiro (Tokyo, Japan) has a PhD in plasma physics from Hiroshima University (1997). He is currently an Associate Professor at the Meiji University. From 2008-2009 he did research on multilateral nuclear fuel cycle system as a visiting researcher at the Princeton University. From 2006-2008 he did research on the separated plutonium management problem in Japan caused by Rokkasho reprocessing plant operation at the University of Tokyo. From 1999-2005 he did research on the economics of nuclear power plants compared with other sources of electrical power as an analyst at the Citizens Nuclear Information Center in Tokyo. He wrote a research report for the International Panel on Fissile Materials (IPFM) with Tatsujiro SUZUKI: “Japan’s Spent Fuel and Plutonium Management Challenges, “(September 2006).