It cannot touch any walls and so instead is contained by a magnetic bottle.
From the sciencedaily.com
The ALPHA collaboration succeeded by using a specially designed magnetic bottle called a Minimum Magnetic Field Trap.
From the sciencedaily.com
How can you create a stable magnetic bottle to confine a ten-million degree plasma that is undergoing nuclear fusion?
From the fredbortz.scienceblog.com
They emptied the positrons out of a magnetic bottle onto a small spot on a target surface comprised of a thin piece of porous silica.
From the sciencedaily.com
Next, the team hopes to attach the device to a larger reactor to see if it can maintain a sufficiently tight magnetic bottle.
From the sciencedaily.com
At such temperatures atoms are stripped down to their electrically charged components, so the helium created by fusion remains within the magnetic bottle.
From the economist.com
Giant electromagnets powerful enough to trap an aircraft carrier will contain the plasma within a spinning vortex held by the magnetic bottle of the tokamak reactor.
From the independent.co.uk
The magnetic confinement bottle is extended all the way to the target.
From the en.wikipedia.org
Heat that leaks out of the bottle is focused into narrow channels as it streams along magnetic field lines in adjoining boundary layers.