Fusion energy efforts, such as the Spherical Tokamak for Energy Production (STEP) and the legacy of the Joint European Torus (JET), represent significant milestones in the pursuit of clean, limitless power. JET has provided invaluable data and operational experience, informing future projects. STEP builds on this foundation, aiming to demonstrate a commercially viable fusion power plant, thus advancing global aspirations for sustainable and carbon-free energy generation.
Fusion energy efforts, such as the Spherical Tokamak for Energy Production (STEP) and the legacy of the Joint European Torus (JET), represent significant milestones in the pursuit of clean, limitless power. JET has provided invaluable data and operational experience, informing future projects. STEP builds on this foundation, aiming to demonstrate a commercially viable fusion power plant, thus advancing global aspirations for sustainable and carbon-free energy generation.
What is JET and what has it contributed to fusion research?
The Joint European Torus (JET) is a large tokamak in Culham, UK. It has run high-power deuterium–tritium plasmas, set tokamak fusion power records, and provided essential data on plasma physics, materials, and reactor technologies used to guide ITER, STEP, and other projects.
What is STEP and what is its goal?
STEP (Spherical Tokamak for Energy Production) is a UKAEA program to design and build a compact, cost-effective demonstration fusion power plant using a spherical tokamak, with the aim of producing net fusion energy and validating technology for commercial fusion.
What is a spherical tokamak, and why is it used for STEP?
A spherical tokamak has a low aspect ratio, giving a more compact, bowl-shaped form. Its geometry can improve plasma confinement and potentially lower construction costs, making it attractive for a near-term demonstration plant like STEP.
How do JET's legacy and STEP fit into the path to fusion power?
JET provides critical high-power data and experience that inform design, materials, and operation for future devices. STEP builds on those lessons to deliver a practical fusion demonstrator, advancing toward commercial, clean fusion energy.