Components & Hardware
Pellet Injector
Fires frozen fuel pellets deep into the plasma.
- Role
- Core fuelling
A pellet injector accelerates frozen deuterium (or D–T) pellets into the core, fuelling deeper than gas can reach and controlling the density profile.
Common questions
What is the pellet injector for?
It fires frozen fuel pellets deep into the plasma to fuel the core efficiently, reaching further in than gas puffing and giving control over the density profile.
Is pellet fuelling proven?
Yes — cryogenic pellet injection is routine on today's tokamaks. It is conventional fuelling hardware adapted to the machine, not an open question.