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Edge localized mode control experiments on MAST using resonant magnetic perturbations from in-vessel coils

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Nardon, E., Kirk, A., Akers, R., Becoulet, M., Cahyna, P., De Temmerman, G., Dudson, B., Hnat, B., Liu, Y., Martin, R., Meyer, H., Tamain, P., Taylor, D. and Temple, D. (2009) Edge localized mode control experiments on MAST using resonant magnetic perturbations from in-vessel coils. In: 36th European Physical Society Conference on Plasma Physics, Natl Palace Culture, Sofia, Bilgaria, June 29-July 03, 2009. Published in: Plasma Physics and Controlled Fusion, Vol.51 (No.12). Article no. 124010. ISSN 0741-3335. doi:10.1088/0741-3335/51/12/124010

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Official URL: http://dx.doi.org/10.1088/0741-3335/51/12/124010

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Abstract

Edge localized mode (ELM) control has been investigated on MAST with a set of in-vessel coils producing n = 3 perturbations. In spite of a broad enough region where the Chirikov parameter is above 1, according to the criterion employed for the design of the ITER ELM control coils, no effect was seen on type I ELMs. The behaviour on MAST is different from that in DIII-D in this respect. The coils do have an effect, however, on Ohmic L-mode plasmas and plasmas just above the L-H transition. In the former, they induce a density pump-out, modify the turbulence characteristics and edge radial electric field and produce a strike point splitting, while in the latter they can trigger ELMs in ELM-free plasmas.

Item Type: Conference Item (Paper)
Subjects: Q Science > QC Physics
Divisions: Faculty of Science > Physics
Journal or Publication Title: Plasma Physics and Controlled Fusion
Publisher: Institute of Physics Publishing Ltd.
ISSN: 0741-3335
Official Date: December 2009
Dates:
DateEvent
December 2009Published
Volume: Vol.51
Number: No.12
Number of Pages: 10
Page Range: Article no. 124010
DOI: 10.1088/0741-3335/51/12/124010
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Restricted or Subscription Access
Funder: United Kingdom Engineering and Physical Sciences Research Council, European Communities
Conference Paper Type: Paper
Title of Event: 36th European Physical Society Conference on Plasma Physics
Type of Event: Conference
Location of Event: Natl Palace Culture, Sofia, Bilgaria
Date(s) of Event: June 29-July 03, 2009

Data sourced from Thomson Reuters' Web of Knowledge

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