US ITER

Hardware

Pellet Inject (Fueling) System

The US will contribute 100% towards the pellet injection system for fueling and edge localized mode mitigation.

ITER will require significant fueling capability to operate at high density for long durations. Pellet injection provides efficient core and edge fueling and will deliver hydrogen, deuterium, or a deuterium/tritium mixture as required by plasma operations. Delivering fuel pellets to the plasma edge mitigates edge localized mode instabilities.

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For more information, contact:

Dave Rasmussen - Pellet Injection, Disruption Mitigation and Residual Gas Analyzer Team Leader - US ITER Project Office

rasmussenda@ornl.gov | 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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