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arXiv · 1407.0496

Pellet fuelling with edge-localised modes controlled by external magnetic perturbations in MAST

M Valovic·L Garzotti·C Gurl·A Kirk·D Dunai·A R Field·I Lupelli·G Naylor·A Thornton
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Abstract

The fuelling of plasmas by shallow frozen pellets with simultaneous mitigation of edge localised modes (ELM) by external magnetic perturbation is demonstrated on the MAST tokamak. Post-pellet particle loss is dominated by ELMs and inter-ELM gas fuelling. It is shown that the size of post-pellet ELMs can be controlled by external magnetic perturbations. Post-pellet ELMs remove particles from the large part of pellet deposition zone including the area with positive density gradient. The mechanism explaining this peculiarity of particle loss is suggested.

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M Valovic, L Garzotti, C Gurl, A Kirk, D Dunai, A R Field, I Lupelli, G Naylor, A Thornton. 2014-07-02. Pellet fuelling with edge-localised modes controlled by external magnetic perturbations in MAST. https://doi.org/10.1088/0029-5515/55/1/013011

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