How Do You Heat Something To 100 Million Degrees?

How Do You Heat Something To 100 Million Degrees? Heating with current. Heating by injection of fast particles. Heating by high-frequency waves, i.e. radio-frequency or microwaves. What is the Kstar made of? The KSTAR magnet system consists of 16 niobium-tin direct current toroidal field magnets, 10 niobium-tin alternating current poloidal field magnets and 4 niobium-titanium