Why don't the walls of a tokomak melt?

Question

Physics

I read the news here on the Internet, they say the Chinese have launched a new, incredible tokomak, the plasma in which is heated to 100 million degrees. The plasma is kept by the magnetic field and does not touch the walls of the reactor. But infrared radiation from the plasma should heat the reactor, right?

Answer 1

There is a very small amount of working substance, very short burning intervals, there is almost a vacuum between the substance and the walls, and the substance is held in the center by a magnetic field, and even in this case, there is a fucking cooling system.

Answer 2

Because physics. The walls are cooled, and the plasma is squeezed inward, and the walls are polished