US ITER

Hardware

Pellet Injection (Fueling) System

The United States is responsible for the research and development, design, and fabrication of the pellet injection system for ITER.

The pellet injection system has three functions: providing a steady state supply of deuterium and tritium fuel; mitigating the impact of edge localized modes on the plasma-facing components; and providing impurity pellets for physics studies.

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For more information, contact:

Dave Rasmussen - Manager, Fueling Systems and Diagnostic Residual Gas Analyzer - US ITER Project Office

[email protected] | 865-574-1158

Internal image of the three-barrel repeating pneumatic deuterium pellet injector used on DIII-D for pellet ELM pacing experiments.The Oak Ridge National Laboratory-developed pellet injector is installed on the DIII-D tokamak for fueling and plasma edge control experiments.View of the drive shaft gears and top of the twin-screw extruder mechanism of the prototype developed for ITER.A tritium-compatible pump is part of a test stand used to assess pumping speed and pump reliability.A twin-screw extruder prototype developed at ORNL
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