FIELD: controlled thermonuclear fusion; fuel make-up systems for thermonuclear reactors. SUBSTANCE: pellet shaper gas vacuum chamber 1 with heat exchanger 2 built up of two blocks connected through sealed joint by means of heat-insulating bush 7. Heat exchanger accommodates heaters and has cylindrical cavity along its axis to receive piston 4 with drive 5. Taper bush 3 is installed at cavity outlet. Attached to this bush are pellet cut-off device with drive 10, channel 11, and pellet accelerator 12. Pipe 6 provided at heat exchanger inlet is used to feed gaseous fuel. Piston 4 has spiral groove on side surface and is made of low-heat-conductance material; heat exchanger is made of high-heat-conductance material. Piston length is greater than length of cylindrical cavity inside heat exchanger. EFFECT: improved design. 2 dwg
