Pellet injector research and development at ORNL

Conference · Sat Dec 31 04:00:00 EST 1994

OSTI ID:10118012

Combs, S K; Barber, G C; Baylor, L R ^[1]

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1. and others

Oak Ridge National Laboratory has been developing pellet injectors for plasma fueling experiments on magnetic confinement devices for more than 15 years. Recent major applications of the ORNL development program include (1) a tritium-compatible four-shot pneumatic injector for the Tokamak Fusion Test Reactor, (2) a centrifuge pellet injector for the Tore Supra tokamak, and most recently (3) a three-barrel repeating pneumatic injector for the DIII-D tokamak. In addition to applications, ORNL is developing advanced technologies, including high-speed pellet injectors, tritium injectors, and long-pulse pellet feed systems. The high-speed research involves a collaboration between ORNL and ENEA-Frascati in the development of a repeating two-stage light gas gun based on an extrusion-type pellet feed system. Construction of a new tritium-compatible, extruder-based repeating pneumatic injector (8-mm-diam) is complete and will replace the pipe gun in the original tritium proof-of-principle experiment. The development of a steady-state feed system in which three standard extruders operate in tandem is under way. These research and development activities are relevant to the International Thermonuclear Experimental Reactor and are briefly described in this paper.

• Research Organization: Oak Ridge National Lab., TN (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: AC05-84OR21400
• OSTI ID: 10118012
• Report Number(s): CONF-940843--14; ON: DE95006736
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700460
COORDINATED RESEARCH PROGRAMS
DESIGN
DOUBLET-3 DEVICE
FUEL FEEDING SYSTEMS
FUELS
HEATING AND FUELING SYSTEMS
ITER TOKAMAK
PELLET INJECTION
TFTR TOKAMAK
THERMONUCLEAR REACTOR FUELING
TORE SUPRA TOKAMAK