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Fusion glossary

T

Tokamak in operation at the Kurchatov Institute, Moscow. T-15MD is an upgrade from the historic T-15 machine—the first tokamak to use superconducting magnets to control the plasma. 

A tokamak operated by the Swiss Federal Institute of Technology in Lausanne (EPFL) as part of the Swiss Plasma Center. See this webpage.

The Tokamak Fusion Test Reactor (TFTR) was an experimental tokamak built at Princeton Plasma Physics Laboratory (New Jersey, USA), and operated from 1982-1997. See more information here.

The tokamak component that prevents heat transfer to the ultra-cold superconducting magnets.

A fusion device for containing a plasma inside a torus chamber through the use of two magnetic fields—one created by electric coils around the torus, the other created by intense electric current in the plasma itself. The tokamak was invented in the 1950s by Soviet physicists Igor Yevgenyevich Tamm and Andrei Sakharov. The term tokamak is a transliteration of a Russian expression (toroidalnaya kamera + magnitnaya katushka) meaning toroidal chamber with magnetic coils.

A superconducting fusion experiment at the Institute for Magnetic Fusion Research, IRFM (CEA Cadarache research centre) in France, which aims particularly at demonstrating long-pulse tokamak operation. Tore Supra has been upgraded with an actively cooled tungsten divertor (the WEST project) to serve as a test bed for ITER.

The basic means of driving toroidal current in the tokamak plasma uses the fact that most field lines created by the central solenoid pass down its bore and do not return on themselves until they pass outboard of (i.e., radially beyond) the plasma. This "inductive linkage" between the solenoid and plasma allows a change in current in the solenoid to drive current in the plasma (Maxwell's Laws).
In a doughnut-shaped torus, the direction parallel to the large circumference.
The magnetic field generated by an electrical currrent flowing around a torus.
Components of a tokamak that assist in stabilizing the plasma, by creating a "magnetic bottle" for confinement. In ITER, the toroidal field coil system consists of 18 D-shaped vertical coils placed around the vacuum vessel.
A surface of revolution generated by revolving a circle in three-dimensional space about an axis coplanar with and not touching the circle. Examples of tori include the surfaces of doughnuts and inner tubes. The solid contained by the surface is known as a toroid.
The third isotope of hydrogen, containing one proton and two neutrons in the nucleus.
The processes of tritium removal from gas streams, including plasma exhaust and the plant atmosphere, and returning it to use as fuel in the plasma or to storage, in a safe manner.