Community Research and Development Information Service - CORDIS

FP7

Pellet fuelling and control of burning plasmas in ITER

Funded under: FP7-EURATOM

Abstract

Pellet injection from the inner wall is planned for use in ITER as the primary core fuelling system since gas fuelling is expected to be highly inefficient in burning plasmas. Tests of the inner wall guide tube have shown that 5 mm pellets with up to 300 m s-1 speeds can survive intact and provide the necessary core fuelling rate. Modelling and extrapolation of the inner wall pellet injection experiments from present day's smaller tokamaks leads to the prediction that this method will provide efficient core fuelling beyond the pedestal region. Using pellets for triggering of frequent small edge localized modes is an attractive additional benefit that the pellet injection system can provide. A description of the ITER pellet injection system's capabilities for fuelling and ELM triggering is presented and performance expectations and fusion power control aspects are discussed.

Additional information

Authors: HOULBERG W A, Oak Ridge National Laboratory, Oak Ridge (US);RASMUSSEN D A, Oak Ridge National Laboratory, Oak Ridge (US);PARKS P B, General Atomics, San Diego (US);MARUYAMA S, ITER International Team, Cadarache (FR);BAYLOR L R, Oak Ridge National Laboratory, Oak Ridge (US);JERNIGAN T C, Oak Ridge National Laboratory, Oak Ridge (US);CAUGHMAN J B, Oak Ridge National Laboratory, Oak Ridge (US);COMBS S K, Oak Ridge National Laboratory, Oak Ridge (US);FOUST C R, Oak Ridge National Laboratory, Oak Ridge (US)
Bibliographic Reference: An article published in: Nuclear Fusion 47 (2007), pp. 443-448
Availability: This article can be accessed online by subscribers, and can be ordered online by non-subscribers, at: http://dx.doi.org/doi:10.1088/0029-5515/47/5/008
Record Number: 200719401 / Last updated on: 2007-09-11
Category: PUBLICATION
Original language: en
Available languages: en
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