FIELD: injection of fusion fuel into fusion reactors. SUBSTANCE: injector has vacuum chamber 1 with heat exchanger 2 and drive 5 with piston 6. Taper bushing 8 is placed at outlet of heat exchanger. Injector also has tube 9 and pellet accelerator 11. Spiral groove is provided on side surface of piston. Chamber 12 is attached to taper bushing 8. Size of inner space of chamber in any direction is larger than inner diameter of tube 9. Tube 9 and accelerator 11 are mounted on opposite sides of chamber 10 on same shaft. Holes are made in chamber walls, their diameter being equal to inner diameter of tube. EFFECT: improved speed of pellets introduction in fusion reactor. 2 dwg
