Keishi Sakamoto
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Keishi Sakamoto is Vice President and Head of Technical Development at Kyoto Fusioneering. He joined Kyoto Fusioneering in April 2021, and the company’s team page also lists him as Distinguished Fellow and Group CTO for the Plasma Heating Group. Before joining the company, he spent many years at the National Institutes for Quantum Science and Technology in Japan working on R&D for plasma heating technology. He is known for leading the development of gyrotrons and for being the first to simultaneously achieve 1 MW output, more than 50% energy conversion efficiency, and continuous output; he holds a Ph.D. in Science from Kyushu University.
Updated 28 October 2026
Public sources: kyotofusioneering.com kyotofusioneering.com
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