A measure of fusion plasma performance is power amplification (Q), defined as the ratio of the fusion power produced to the additional heating externally applied to maintain a steady-state. On ITER, high-Q operation will be sustained for a duration of the order of 300-500s (Q=10 milestone) and up to 3000s for Q ≥ 5 operation aiming at steady-state. The
The first IAEA Technical Meeting on Long-Pulse Operation of Fusion Devices was held in Vienna, Austria, from 14 to 16 November. Controlling fusion plasma for long periods, while gaining experience in steady-state and/or long-pulse operation with active cooling systems, is essential for the success of ITER and demonstration fusion power plants.
In particular, the focus of the discussion was on the present physics and technology limits in fusion performance and duration and how to collectively support long-pulse operation development on ITER and beyond. In the first invited lecture at the start of the meeting Sun-Hee KIM, from the ITER Organization, presented ITER long-pulse and steady-state operation candidate scenarios and possible paths to be explored during the ITER Pre-Fusion Power Operation (PFPO) Phase as part of the
The Chinese tokamak EAST, whose control room is pictured here, is one of the tokamaks around the world that have achieved progress in support of ITER's planned long-pulse operation.