It is mainly a toroid, consisting of 50 non-planar and 20 planar superconducting magnetic coils, 3.5 m high, which induce a magnetic field that prevents the plasma from colliding with the reactor walls.
To je uglavnom toroid koji se sastoji od 50 neplanarnih i 20 planarnih supravodljivih magnetskih zavojnica, 3.5 metara visokih, koje induciraju magnetsko polje koje sprječava plazmu da se sudari sa zidovima reaktora.