Someone ask me how to confine plasma which is very hot using magnetic field ? Really don't know. Found some article in phy.org . Taken from phy.org about how magnetic field keeps plasma in like a thermos flask !excerpts here:
The LDX magnet has coils made of superconducting niobium-tin alloy, which loses all electrical resistance when cooled below about 15 degrees Kelvin; in the device, it is cooled to 4 degrees Kelvin--4 degrees above absolute zero, or minus 269 degrees Celsius, a temperature that can only be achieved by surrounding the coils with liquid helium. This is the only superconducting magnet currently used in any U.S. fusion reactor.
When in full operation, the frigid magnet, contained in a double-walled vessel that is essentially a large thermos bottle, is surrounded by plasma heated to millions of degrees Celsius. Garnier says that in full operation, the system is quite literally a snowball in hell.Continue...
