US Department of Energy (DOE) Under Secretary for Science Paul Dabbar joined Oak Ridge National Laboratory (ORNL) leaders last week to mark progress toward a next-generation fusion materials project.
The Material Plasma Exposure eXperiment (MPEX) aims to build a first-of-a-kind linear plasma device to support study of the long-term effects of plasma interactions on the materials necessary for future fusion reactors. “This project is an important element in the US fusion portfolio and will offer a world-leading materials resource for fusion energy development,” Dabbar said.
Current materials are sufficient for the experimental devices planned or underway, such as the International Thermonuclear Experimental Reactor (ITER) under construction in France, but not for a long-running power-producing reactor, DOE said. ORNL has a substantial cadre of scientists and engineers working on this materials challenge. MPEX will offer a new platform to accelerate that effort and will serve as a resource for fusion development activities across DOE and other sectors.
“ORNL brings together an exceptional combination of talent and capabilities to address key challenges along the path to realizing the promise of fusion energy,” said ORNL director Thomas Zacharia. The lab also hosts US ITER, which delivers US hardware contributions to the ITER fusion project while ORNL researchers also contribute engineering and scientific expertise to fusion devices across the USA and worldwide.
“The combination of experimental, modelling and simulation, and component fabrication expertise at ORNL forms a unique test bed to enable and accelerate development of fusion energy,” said Kathy McCarthy, ORNL associate lab director for Fusion and Fission Energy and Science.
The MPEX project recently completed an independent project review in advance of DOE authorisation to begin procurement and fabrication of major long-lead items for the device. That hardware will include a superconducting magnet system, two gyrotron microwave sources, a high voltage power supply, plus reconfiguration of an existing ORNL building to be the future home of MPEX. Pending DOE authorisation expected later this year, MPEX will begin procurement activities in preparation for the start of fabrication in 2021. MPEX is supported by DOE’s Office of Science.
Photo: Department of Energy Under Secretary for Science Paul Dabbar (center) joined ORNL and DOE leaders for a ribbon-cutting ceremony to mark progress toward a next-generation fusion materials project (Credit: ORNL)