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H-mode access by pellet fuelling in the MAST tokamak

Valovic, M.; Garzotti, L; Gurl, C.; Akers, R.J.; Harrison, J; Michael, Clive; Naylor, G; Scannell, R; MAST Team, The


Access into H-mode is studied in the MAST tokamak when plasma is fuelled by cryogenic pellets. It is shown that pellet fuelling from the high-field side allows access to H-mode in plasmas heated by neutral beams. Simple and two-stage L-H transitions are identified. The results of comparison of the L-H transitions with pellet injection with transitions where plasmas are fuelled solely by gas puffing depend on the gas puff geometry: fuelling by high-field side gas leads to an L-H transition at...[Show more]

CollectionsANU Research Publications
Date published: 2012
Type: Journal article
Source: Nuclear Fusion
DOI: 10.1088/0029-5515/52/11/114022


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