Sketch of the ASDEX Upgrade fusion device in Garching

This cutaway illustration depicts the complex internal structure of a large, red machine with a glowing, textured center.

Sketch of the ASDEX Upgrade fusion device in Garching, Germany. From interior to exterior: plasma, plasma vessel, main field coils, poloidal field coils and support structure; credit: MPI for Plasma Physics / ixtract

TCV tokamak

A detailed, cutaway illustration of a fusion reactor, showcasing its complex internal components in various colors.

Artist’s concept of the Swiss TCV tokamak (Tokamak à Configuration Variable) in Lausanne, Switzerland; credit: SPC / EPFL

JT-60SA tokamak

An overhead view shows a large, complex industrial space filled with gray and orange machinery, pipes, and metal walkways surrounding a central cylindrical structure.

Japanese-European tokamak JT60-SA in Naka, Japan; credit: QST / F4E