Angioni, C., Fable, E., Greenwald, M., Maslov, M., Peeters, A. G., Takenaga, H. and Weisen, H. (2009) Particle transport in tokamak plasmas, theory and experiment. In: 36th European Physical Society Conference on Plasma Physics, Natl Palace Culture, Sofia, Bilgaria, JUN 29-JUL 03, 2009. Published in: Plasma Physics and Controlled Fusion, Vol.51 (No.12). Article no.124017.

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Abstract

The physical processes producing electron particle transport in the core of tokamak plasmas are described. Starting from the gyrokinetic equation, a simple analytical derivation is used as guidance to illustrate the main mechanisms driving turbulent particle convection. A review of the experimental observations on particle transport in tokamaks is presented and the consistency with the theoretical predictions is discussed. An overall qualitative agreement, and in some cases even a specific quantitative agreement, emerges between complex theoretical predictions and equally complex experimental observations, exhibiting different dependences on plasma parameters under different regimes. By these results, the direct connection between macroscopic transport properties and the character of microscopic turbulence is pointed out, and an important confirmation of the paradigm of microinstabilities and turbulence as the main cause of transport in the core of tokamaks is obtained. Finally, the impact of these results on the prediction of the peaking of the electron density profile in a fusion reactor is illustrated.

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
Date:	December 2009
Volume:	Vol.51
Number:	No.12
Number of Pages:	14
Page Range:	Article no.124017
Identification Number:	10.1088/0741-3335/51/12/124017
Status:	Peer Reviewed
Publication Status:	Published
Access rights to Published version:	Restricted or Subscription Access
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:	JUN 29-JUL 03, 2009
URI:	http://wrap.warwick.ac.uk/id/eprint/16917

Data sourced from Thomson Reuters' Web of Knowledge

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