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physical object > artifact > device > instrument > fusion device

fusion device
subject			fact

fusion device	is a kind of instrument
instrument	has operator
artifact	has creator
	has creation date
	has purpose
	has owner
physical object	has location or center of gravity
	has angular momentum
	has mass
	has velocity
	has momentum
	has temperature
	has volume
	has extent
	has material

Kinds of fusion device :

• pinch machine (2 kinds, 6 facts) - A fusion device containing a plasma heated by a shock wave generated within the plasma as it is constricted by the rapidly increasing magnetic field.
• stellarator (2 facts) - A type of plasma machine. It has a twisted-field configuration in the form of a figure 8 to fold the plasma back on itself; therefore, unlike a pinch machine, it has no ends where the plasma can leak out. Stellarators and tokomaks resemble each other in that both are toroidal devices that attain equilibrium and MHD stability through rotational transform and shear; they differ mainly in the way they attain these properties.
• Tokamak (2 facts) - A type of "magnetic bottle" used in experiments on controlled nuclear fusion. (the name is a Russian acronym)